kernel/drivers/media/usb/pvrusb2/pvrusb2-hdw.c

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include <linux/errno.h>
  22 #include <linux/string.h>
  23 #include <linux/slab.h>
  24 #include <linux/module.h>
  25 #include <linux/firmware.h>
  26 #include <linux/videodev2.h>
  27 #include <media/v4l2-common.h>
  28 #include <media/tuner.h>
  29 #include "pvrusb2.h"
  30 #include "pvrusb2-std.h"
  31 #include "pvrusb2-util.h"
  32 #include "pvrusb2-hdw.h"
  33 #include "pvrusb2-i2c-core.h"
  34 #include "pvrusb2-eeprom.h"
  35 #include "pvrusb2-hdw-internal.h"
  36 #include "pvrusb2-encoder.h"
  37 #include "pvrusb2-debug.h"
  38 #include "pvrusb2-fx2-cmd.h"
  39 #include "pvrusb2-wm8775.h"
  40 #include "pvrusb2-video-v4l.h"
  41 #include "pvrusb2-cx2584x-v4l.h"
  42 #include "pvrusb2-cs53l32a.h"
  43 #include "pvrusb2-audio.h"
  44
  45 #define TV_MIN_FREQ     55250000L
  46 #define TV_MAX_FREQ    850000000L
  47
  48 /* This defines a minimum interval that the decoder must remain quiet
  49    before we are allowed to start it running. */
  50 #define TIME_MSEC_DECODER_WAIT 50
  51
  52 /* This defines a minimum interval that the decoder must be allowed to run
  53    before we can safely begin using its streaming output. */
  54 #define TIME_MSEC_DECODER_STABILIZATION_WAIT 300
  55
  56 /* This defines a minimum interval that the encoder must remain quiet
  57    before we are allowed to configure it. */
  58 #define TIME_MSEC_ENCODER_WAIT 50
  59
  60 /* This defines the minimum interval that the encoder must successfully run
  61    before we consider that the encoder has run at least once since its
  62    firmware has been loaded.  This measurement is in important for cases
  63    where we can't do something until we know that the encoder has been run
  64    at least once. */
  65 #define TIME_MSEC_ENCODER_OK 250
  66
  67 static struct pvr2_hdw *unit_pointers[PVR_NUM] = {[ 0 ... PVR_NUM-1 ] = NULL};
  68 static DEFINE_MUTEX(pvr2_unit_mtx);
  69
  70 static int ctlchg;
  71 static int procreload;
  72 static int tuner[PVR_NUM] = { [0 ... PVR_NUM-1] = -1 };
  73 static int tolerance[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
  74 static int video_std[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
  75 static int init_pause_msec;
  76
  77 module_param(ctlchg, int, S_IRUGO|S_IWUSR);
  78 MODULE_PARM_DESC(ctlchg, "0=optimize ctl change 1=always accept new ctl value");
  79 module_param(init_pause_msec, int, S_IRUGO|S_IWUSR);
  80 MODULE_PARM_DESC(init_pause_msec, "hardware initialization settling delay");
  81 module_param(procreload, int, S_IRUGO|S_IWUSR);
  82 MODULE_PARM_DESC(procreload,
  83                  "Attempt init failure recovery with firmware reload");
  84 module_param_array(tuner,    int, NULL, 0444);
  85 MODULE_PARM_DESC(tuner,"specify installed tuner type");
  86 module_param_array(video_std,    int, NULL, 0444);
  87 MODULE_PARM_DESC(video_std,"specify initial video standard");
  88 module_param_array(tolerance,    int, NULL, 0444);
  89 MODULE_PARM_DESC(tolerance,"specify stream error tolerance");
  90
  91 /* US Broadcast channel 3 (61.25 MHz), to help with testing */
  92 static int default_tv_freq    = 61250000L;
  93 /* 104.3 MHz, a usable FM station for my area */
  94 static int default_radio_freq = 104300000L;
  95
  96 module_param_named(tv_freq, default_tv_freq, int, 0444);
  97 MODULE_PARM_DESC(tv_freq, "specify initial television frequency");
  98 module_param_named(radio_freq, default_radio_freq, int, 0444);
  99 MODULE_PARM_DESC(radio_freq, "specify initial radio frequency");
 100
 101 #define PVR2_CTL_WRITE_ENDPOINT  0x01
 102 #define PVR2_CTL_READ_ENDPOINT   0x81
 103
 104 #define PVR2_GPIO_IN 0x9008
 105 #define PVR2_GPIO_OUT 0x900c
 106 #define PVR2_GPIO_DIR 0x9020
 107
 108 #define trace_firmware(...) pvr2_trace(PVR2_TRACE_FIRMWARE,__VA_ARGS__)
 109
 110 #define PVR2_FIRMWARE_ENDPOINT   0x02
 111
 112 /* size of a firmware chunk */
 113 #define FIRMWARE_CHUNK_SIZE 0x2000
 114
 115 typedef void (*pvr2_subdev_update_func)(struct pvr2_hdw *,
 116                                         struct v4l2_subdev *);
 117
 118 static const pvr2_subdev_update_func pvr2_module_update_functions[] = {
 119         [PVR2_CLIENT_ID_WM8775] = pvr2_wm8775_subdev_update,
 120         [PVR2_CLIENT_ID_SAA7115] = pvr2_saa7115_subdev_update,
 121         [PVR2_CLIENT_ID_MSP3400] = pvr2_msp3400_subdev_update,
 122         [PVR2_CLIENT_ID_CX25840] = pvr2_cx25840_subdev_update,
 123         [PVR2_CLIENT_ID_CS53L32A] = pvr2_cs53l32a_subdev_update,
 124 };
 125
 126 static const char *module_names[] = {
 127         [PVR2_CLIENT_ID_MSP3400] = "msp3400",
 128         [PVR2_CLIENT_ID_CX25840] = "cx25840",
 129         [PVR2_CLIENT_ID_SAA7115] = "saa7115",
 130         [PVR2_CLIENT_ID_TUNER] = "tuner",
 131         [PVR2_CLIENT_ID_DEMOD] = "tuner",
 132         [PVR2_CLIENT_ID_CS53L32A] = "cs53l32a",
 133         [PVR2_CLIENT_ID_WM8775] = "wm8775",
 134 };
 135
 136
 137 static const unsigned char *module_i2c_addresses[] = {
 138         [PVR2_CLIENT_ID_TUNER] = "\x60\x61\x62\x63",
 139         [PVR2_CLIENT_ID_DEMOD] = "\x43",
 140         [PVR2_CLIENT_ID_MSP3400] = "\x40",
 141         [PVR2_CLIENT_ID_SAA7115] = "\x21",
 142         [PVR2_CLIENT_ID_WM8775] = "\x1b",
 143         [PVR2_CLIENT_ID_CX25840] = "\x44",
 144         [PVR2_CLIENT_ID_CS53L32A] = "\x11",
 145 };
 146
 147
 148 static const char *ir_scheme_names[] = {
 149         [PVR2_IR_SCHEME_NONE] = "none",
 150         [PVR2_IR_SCHEME_29XXX] = "29xxx",
 151         [PVR2_IR_SCHEME_24XXX] = "24xxx (29xxx emulation)",
 152         [PVR2_IR_SCHEME_24XXX_MCE] = "24xxx (MCE device)",
 153         [PVR2_IR_SCHEME_ZILOG] = "Zilog",
 154 };
 155
 156
 157 /* Define the list of additional controls we'll dynamically construct based
 158    on query of the cx2341x module. */
 159 struct pvr2_mpeg_ids {
 160         const char *strid;
 161         int id;
 162 };
 163 static const struct pvr2_mpeg_ids mpeg_ids[] = {
 164         {
 165                 .strid = "audio_layer",
 166                 .id = V4L2_CID_MPEG_AUDIO_ENCODING,
 167         },{
 168                 .strid = "audio_bitrate",
 169                 .id = V4L2_CID_MPEG_AUDIO_L2_BITRATE,
 170         },{
 171                 /* Already using audio_mode elsewhere :-( */
 172                 .strid = "mpeg_audio_mode",
 173                 .id = V4L2_CID_MPEG_AUDIO_MODE,
 174         },{
 175                 .strid = "mpeg_audio_mode_extension",
 176                 .id = V4L2_CID_MPEG_AUDIO_MODE_EXTENSION,
 177         },{
 178                 .strid = "audio_emphasis",
 179                 .id = V4L2_CID_MPEG_AUDIO_EMPHASIS,
 180         },{
 181                 .strid = "audio_crc",
 182                 .id = V4L2_CID_MPEG_AUDIO_CRC,
 183         },{
 184                 .strid = "video_aspect",
 185                 .id = V4L2_CID_MPEG_VIDEO_ASPECT,
 186         },{
 187                 .strid = "video_b_frames",
 188                 .id = V4L2_CID_MPEG_VIDEO_B_FRAMES,
 189         },{
 190                 .strid = "video_gop_size",
 191                 .id = V4L2_CID_MPEG_VIDEO_GOP_SIZE,
 192         },{
 193                 .strid = "video_gop_closure",
 194                 .id = V4L2_CID_MPEG_VIDEO_GOP_CLOSURE,
 195         },{
 196                 .strid = "video_bitrate_mode",
 197                 .id = V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
 198         },{
 199                 .strid = "video_bitrate",
 200                 .id = V4L2_CID_MPEG_VIDEO_BITRATE,
 201         },{
 202                 .strid = "video_bitrate_peak",
 203                 .id = V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
 204         },{
 205                 .strid = "video_temporal_decimation",
 206                 .id = V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION,
 207         },{
 208                 .strid = "stream_type",
 209                 .id = V4L2_CID_MPEG_STREAM_TYPE,
 210         },{
 211                 .strid = "video_spatial_filter_mode",
 212                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE,
 213         },{
 214                 .strid = "video_spatial_filter",
 215                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER,
 216         },{
 217                 .strid = "video_luma_spatial_filter_type",
 218                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE,
 219         },{
 220                 .strid = "video_chroma_spatial_filter_type",
 221                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE,
 222         },{
 223                 .strid = "video_temporal_filter_mode",
 224                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE,
 225         },{
 226                 .strid = "video_temporal_filter",
 227                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER,
 228         },{
 229                 .strid = "video_median_filter_type",
 230                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE,
 231         },{
 232                 .strid = "video_luma_median_filter_top",
 233                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP,
 234         },{
 235                 .strid = "video_luma_median_filter_bottom",
 236                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM,
 237         },{
 238                 .strid = "video_chroma_median_filter_top",
 239                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP,
 240         },{
 241                 .strid = "video_chroma_median_filter_bottom",
 242                 .id = V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM,
 243         }
 244 };
 245 #define MPEGDEF_COUNT ARRAY_SIZE(mpeg_ids)
 246
 247
 248 static const char *control_values_srate[] = {
 249         [V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100]   = "44.1 kHz",
 250         [V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000]   = "48 kHz",
 251         [V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000]   = "32 kHz",
 252 };
 253
 254
 255
 256 static const char *control_values_input[] = {
 257         [PVR2_CVAL_INPUT_TV]        = "television",  /*xawtv needs this name*/
 258         [PVR2_CVAL_INPUT_DTV]       = "dtv",
 259         [PVR2_CVAL_INPUT_RADIO]     = "radio",
 260         [PVR2_CVAL_INPUT_SVIDEO]    = "s-video",
 261         [PVR2_CVAL_INPUT_COMPOSITE] = "composite",
 262 };
 263
 264
 265 static const char *control_values_audiomode[] = {
 266         [V4L2_TUNER_MODE_MONO]   = "Mono",
 267         [V4L2_TUNER_MODE_STEREO] = "Stereo",
 268         [V4L2_TUNER_MODE_LANG1]  = "Lang1",
 269         [V4L2_TUNER_MODE_LANG2]  = "Lang2",
 270         [V4L2_TUNER_MODE_LANG1_LANG2] = "Lang1+Lang2",
 271 };
 272
 273
 274 static const char *control_values_hsm[] = {
 275         [PVR2_CVAL_HSM_FAIL] = "Fail",
 276         [PVR2_CVAL_HSM_HIGH] = "High",
 277         [PVR2_CVAL_HSM_FULL] = "Full",
 278 };
 279
 280
 281 static const char *pvr2_state_names[] = {
 282         [PVR2_STATE_NONE] =    "none",
 283         [PVR2_STATE_DEAD] =    "dead",
 284         [PVR2_STATE_COLD] =    "cold",
 285         [PVR2_STATE_WARM] =    "warm",
 286         [PVR2_STATE_ERROR] =   "error",
 287         [PVR2_STATE_READY] =   "ready",
 288         [PVR2_STATE_RUN] =     "run",
 289 };
 290
 291
 292 struct pvr2_fx2cmd_descdef {
 293         unsigned char id;
 294         unsigned char *desc;
 295 };
 296
 297 static const struct pvr2_fx2cmd_descdef pvr2_fx2cmd_desc[] = {
 298         {FX2CMD_MEM_WRITE_DWORD, "write encoder dword"},
 299         {FX2CMD_MEM_READ_DWORD, "read encoder dword"},
 300         {FX2CMD_HCW_ZILOG_RESET, "zilog IR reset control"},
 301         {FX2CMD_MEM_READ_64BYTES, "read encoder 64bytes"},
 302         {FX2CMD_REG_WRITE, "write encoder register"},
 303         {FX2CMD_REG_READ, "read encoder register"},
 304         {FX2CMD_MEMSEL, "encoder memsel"},
 305         {FX2CMD_I2C_WRITE, "i2c write"},
 306         {FX2CMD_I2C_READ, "i2c read"},
 307         {FX2CMD_GET_USB_SPEED, "get USB speed"},
 308         {FX2CMD_STREAMING_ON, "stream on"},
 309         {FX2CMD_STREAMING_OFF, "stream off"},
 310         {FX2CMD_FWPOST1, "fwpost1"},
 311         {FX2CMD_POWER_OFF, "power off"},
 312         {FX2CMD_POWER_ON, "power on"},
 313         {FX2CMD_DEEP_RESET, "deep reset"},
 314         {FX2CMD_GET_EEPROM_ADDR, "get rom addr"},
 315         {FX2CMD_GET_IR_CODE, "get IR code"},
 316         {FX2CMD_HCW_DEMOD_RESETIN, "hcw demod resetin"},
 317         {FX2CMD_HCW_DTV_STREAMING_ON, "hcw dtv stream on"},
 318         {FX2CMD_HCW_DTV_STREAMING_OFF, "hcw dtv stream off"},
 319         {FX2CMD_ONAIR_DTV_STREAMING_ON, "onair dtv stream on"},
 320         {FX2CMD_ONAIR_DTV_STREAMING_OFF, "onair dtv stream off"},
 321         {FX2CMD_ONAIR_DTV_POWER_ON, "onair dtv power on"},
 322         {FX2CMD_ONAIR_DTV_POWER_OFF, "onair dtv power off"},
 323 };
 324
 325
 326 static int pvr2_hdw_set_input(struct pvr2_hdw *hdw,int v);
 327 static void pvr2_hdw_state_sched(struct pvr2_hdw *);
 328 static int pvr2_hdw_state_eval(struct pvr2_hdw *);
 329 static void pvr2_hdw_set_cur_freq(struct pvr2_hdw *,unsigned long);
 330 static void pvr2_hdw_worker_poll(struct work_struct *work);
 331 static int pvr2_hdw_wait(struct pvr2_hdw *,int state);
 332 static int pvr2_hdw_untrip_unlocked(struct pvr2_hdw *);
 333 static void pvr2_hdw_state_log_state(struct pvr2_hdw *);
 334 static int pvr2_hdw_cmd_usbstream(struct pvr2_hdw *hdw,int runFl);
 335 static int pvr2_hdw_commit_setup(struct pvr2_hdw *hdw);
 336 static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw);
 337 static void pvr2_hdw_quiescent_timeout(unsigned long);
 338 static void pvr2_hdw_decoder_stabilization_timeout(unsigned long);
 339 static void pvr2_hdw_encoder_wait_timeout(unsigned long);
 340 static void pvr2_hdw_encoder_run_timeout(unsigned long);
 341 static int pvr2_issue_simple_cmd(struct pvr2_hdw *,u32);
 342 static int pvr2_send_request_ex(struct pvr2_hdw *hdw,
 343                                 unsigned int timeout,int probe_fl,
 344                                 void *write_data,unsigned int write_len,
 345                                 void *read_data,unsigned int read_len);
 346 static int pvr2_hdw_check_cropcap(struct pvr2_hdw *hdw);
 347 static v4l2_std_id pvr2_hdw_get_detected_std(struct pvr2_hdw *hdw);
 348
 349 static void trace_stbit(const char *name,int val)
 350 {
 351         pvr2_trace(PVR2_TRACE_STBITS,
 352                    "State bit %s <-- %s",
 353                    name,(val ? "true" : "false"));
 354 }
 355
 356 static int ctrl_channelfreq_get(struct pvr2_ctrl *cptr,int *vp)
 357 {
 358         struct pvr2_hdw *hdw = cptr->hdw;
 359         if ((hdw->freqProgSlot > 0) && (hdw->freqProgSlot <= FREQTABLE_SIZE)) {
 360                 *vp = hdw->freqTable[hdw->freqProgSlot-1];
 361         } else {
 362                 *vp = 0;
 363         }
 364         return 0;
 365 }
 366
 367 static int ctrl_channelfreq_set(struct pvr2_ctrl *cptr,int m,int v)
 368 {
 369         struct pvr2_hdw *hdw = cptr->hdw;
 370         unsigned int slotId = hdw->freqProgSlot;
 371         if ((slotId > 0) && (slotId <= FREQTABLE_SIZE)) {
 372                 hdw->freqTable[slotId-1] = v;
 373                 /* Handle side effects correctly - if we're tuned to this
 374                    slot, then forgot the slot id relation since the stored
 375                    frequency has been changed. */
 376                 if (hdw->freqSelector) {
 377                         if (hdw->freqSlotRadio == slotId) {
 378                                 hdw->freqSlotRadio = 0;
 379                         }
 380                 } else {
 381                         if (hdw->freqSlotTelevision == slotId) {
 382                                 hdw->freqSlotTelevision = 0;
 383                         }
 384                 }
 385         }
 386         return 0;
 387 }
 388
 389 static int ctrl_channelprog_get(struct pvr2_ctrl *cptr,int *vp)
 390 {
 391         *vp = cptr->hdw->freqProgSlot;
 392         return 0;
 393 }
 394
 395 static int ctrl_channelprog_set(struct pvr2_ctrl *cptr,int m,int v)
 396 {
 397         struct pvr2_hdw *hdw = cptr->hdw;
 398         if ((v >= 0) && (v <= FREQTABLE_SIZE)) {
 399                 hdw->freqProgSlot = v;
 400         }
 401         return 0;
 402 }
 403
 404 static int ctrl_channel_get(struct pvr2_ctrl *cptr,int *vp)
 405 {
 406         struct pvr2_hdw *hdw = cptr->hdw;
 407         *vp = hdw->freqSelector ? hdw->freqSlotRadio : hdw->freqSlotTelevision;
 408         return 0;
 409 }
 410
 411 static int ctrl_channel_set(struct pvr2_ctrl *cptr,int m,int slotId)
 412 {
 413         unsigned freq = 0;
 414         struct pvr2_hdw *hdw = cptr->hdw;
 415         if ((slotId < 0) || (slotId > FREQTABLE_SIZE)) return 0;
 416         if (slotId > 0) {
 417                 freq = hdw->freqTable[slotId-1];
 418                 if (!freq) return 0;
 419                 pvr2_hdw_set_cur_freq(hdw,freq);
 420         }
 421         if (hdw->freqSelector) {
 422                 hdw->freqSlotRadio = slotId;
 423         } else {
 424                 hdw->freqSlotTelevision = slotId;
 425         }
 426         return 0;
 427 }
 428
 429 static int ctrl_freq_get(struct pvr2_ctrl *cptr,int *vp)
 430 {
 431         *vp = pvr2_hdw_get_cur_freq(cptr->hdw);
 432         return 0;
 433 }
 434
 435 static int ctrl_freq_is_dirty(struct pvr2_ctrl *cptr)
 436 {
 437         return cptr->hdw->freqDirty != 0;
 438 }
 439
 440 static void ctrl_freq_clear_dirty(struct pvr2_ctrl *cptr)
 441 {
 442         cptr->hdw->freqDirty = 0;
 443 }
 444
 445 static int ctrl_freq_set(struct pvr2_ctrl *cptr,int m,int v)
 446 {
 447         pvr2_hdw_set_cur_freq(cptr->hdw,v);
 448         return 0;
 449 }
 450
 451 static int ctrl_cropl_min_get(struct pvr2_ctrl *cptr, int *left)
 452 {
 453         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 454         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 455         if (stat != 0) {
 456                 return stat;
 457         }
 458         *left = cap->bounds.left;
 459         return 0;
 460 }
 461
 462 static int ctrl_cropl_max_get(struct pvr2_ctrl *cptr, int *left)
 463 {
 464         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 465         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 466         if (stat != 0) {
 467                 return stat;
 468         }
 469         *left = cap->bounds.left;
 470         if (cap->bounds.width > cptr->hdw->cropw_val) {
 471                 *left += cap->bounds.width - cptr->hdw->cropw_val;
 472         }
 473         return 0;
 474 }
 475
 476 static int ctrl_cropt_min_get(struct pvr2_ctrl *cptr, int *top)
 477 {
 478         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 479         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 480         if (stat != 0) {
 481                 return stat;
 482         }
 483         *top = cap->bounds.top;
 484         return 0;
 485 }
 486
 487 static int ctrl_cropt_max_get(struct pvr2_ctrl *cptr, int *top)
 488 {
 489         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 490         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 491         if (stat != 0) {
 492                 return stat;
 493         }
 494         *top = cap->bounds.top;
 495         if (cap->bounds.height > cptr->hdw->croph_val) {
 496                 *top += cap->bounds.height - cptr->hdw->croph_val;
 497         }
 498         return 0;
 499 }
 500
 501 static int ctrl_cropw_max_get(struct pvr2_ctrl *cptr, int *width)
 502 {
 503         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 504         int stat, bleftend, cleft;
 505
 506         stat = pvr2_hdw_check_cropcap(cptr->hdw);
 507         if (stat != 0) {
 508                 return stat;
 509         }
 510         bleftend = cap->bounds.left+cap->bounds.width;
 511         cleft = cptr->hdw->cropl_val;
 512
 513         *width = cleft < bleftend ? bleftend-cleft : 0;
 514         return 0;
 515 }
 516
 517 static int ctrl_croph_max_get(struct pvr2_ctrl *cptr, int *height)
 518 {
 519         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 520         int stat, btopend, ctop;
 521
 522         stat = pvr2_hdw_check_cropcap(cptr->hdw);
 523         if (stat != 0) {
 524                 return stat;
 525         }
 526         btopend = cap->bounds.top+cap->bounds.height;
 527         ctop = cptr->hdw->cropt_val;
 528
 529         *height = ctop < btopend ? btopend-ctop : 0;
 530         return 0;
 531 }
 532
 533 static int ctrl_get_cropcapbl(struct pvr2_ctrl *cptr, int *val)
 534 {
 535         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 536         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 537         if (stat != 0) {
 538                 return stat;
 539         }
 540         *val = cap->bounds.left;
 541         return 0;
 542 }
 543
 544 static int ctrl_get_cropcapbt(struct pvr2_ctrl *cptr, int *val)
 545 {
 546         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 547         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 548         if (stat != 0) {
 549                 return stat;
 550         }
 551         *val = cap->bounds.top;
 552         return 0;
 553 }
 554
 555 static int ctrl_get_cropcapbw(struct pvr2_ctrl *cptr, int *val)
 556 {
 557         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 558         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 559         if (stat != 0) {
 560                 return stat;
 561         }
 562         *val = cap->bounds.width;
 563         return 0;
 564 }
 565
 566 static int ctrl_get_cropcapbh(struct pvr2_ctrl *cptr, int *val)
 567 {
 568         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 569         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 570         if (stat != 0) {
 571                 return stat;
 572         }
 573         *val = cap->bounds.height;
 574         return 0;
 575 }
 576
 577 static int ctrl_get_cropcapdl(struct pvr2_ctrl *cptr, int *val)
 578 {
 579         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 580         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 581         if (stat != 0) {
 582                 return stat;
 583         }
 584         *val = cap->defrect.left;
 585         return 0;
 586 }
 587
 588 static int ctrl_get_cropcapdt(struct pvr2_ctrl *cptr, int *val)
 589 {
 590         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 591         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 592         if (stat != 0) {
 593                 return stat;
 594         }
 595         *val = cap->defrect.top;
 596         return 0;
 597 }
 598
 599 static int ctrl_get_cropcapdw(struct pvr2_ctrl *cptr, int *val)
 600 {
 601         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 602         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 603         if (stat != 0) {
 604                 return stat;
 605         }
 606         *val = cap->defrect.width;
 607         return 0;
 608 }
 609
 610 static int ctrl_get_cropcapdh(struct pvr2_ctrl *cptr, int *val)
 611 {
 612         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 613         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 614         if (stat != 0) {
 615                 return stat;
 616         }
 617         *val = cap->defrect.height;
 618         return 0;
 619 }
 620
 621 static int ctrl_get_cropcappan(struct pvr2_ctrl *cptr, int *val)
 622 {
 623         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 624         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 625         if (stat != 0) {
 626                 return stat;
 627         }
 628         *val = cap->pixelaspect.numerator;
 629         return 0;
 630 }
 631
 632 static int ctrl_get_cropcappad(struct pvr2_ctrl *cptr, int *val)
 633 {
 634         struct v4l2_cropcap *cap = &cptr->hdw->cropcap_info;
 635         int stat = pvr2_hdw_check_cropcap(cptr->hdw);
 636         if (stat != 0) {
 637                 return stat;
 638         }
 639         *val = cap->pixelaspect.denominator;
 640         return 0;
 641 }
 642
 643 static int ctrl_vres_max_get(struct pvr2_ctrl *cptr,int *vp)
 644 {
 645         /* Actual maximum depends on the video standard in effect. */
 646         if (cptr->hdw->std_mask_cur & V4L2_STD_525_60) {
 647                 *vp = 480;
 648         } else {
 649                 *vp = 576;
 650         }
 651         return 0;
 652 }
 653
 654 static int ctrl_vres_min_get(struct pvr2_ctrl *cptr,int *vp)
 655 {
 656         /* Actual minimum depends on device digitizer type. */
 657         if (cptr->hdw->hdw_desc->flag_has_cx25840) {
 658                 *vp = 75;
 659         } else {
 660                 *vp = 17;
 661         }
 662         return 0;
 663 }
 664
 665 static int ctrl_get_input(struct pvr2_ctrl *cptr,int *vp)
 666 {
 667         *vp = cptr->hdw->input_val;
 668         return 0;
 669 }
 670
 671 static int ctrl_check_input(struct pvr2_ctrl *cptr,int v)
 672 {
 673         return ((1 << v) & cptr->hdw->input_allowed_mask) != 0;
 674 }
 675
 676 static int ctrl_set_input(struct pvr2_ctrl *cptr,int m,int v)
 677 {
 678         return pvr2_hdw_set_input(cptr->hdw,v);
 679 }
 680
 681 static int ctrl_isdirty_input(struct pvr2_ctrl *cptr)
 682 {
 683         return cptr->hdw->input_dirty != 0;
 684 }
 685
 686 static void ctrl_cleardirty_input(struct pvr2_ctrl *cptr)
 687 {
 688         cptr->hdw->input_dirty = 0;
 689 }
 690
 691
 692 static int ctrl_freq_max_get(struct pvr2_ctrl *cptr, int *vp)
 693 {
 694         unsigned long fv;
 695         struct pvr2_hdw *hdw = cptr->hdw;
 696         if (hdw->tuner_signal_stale) {
 697                 pvr2_hdw_status_poll(hdw);
 698         }
 699         fv = hdw->tuner_signal_info.rangehigh;
 700         if (!fv) {
 701                 /* Safety fallback */
 702                 *vp = TV_MAX_FREQ;
 703                 return 0;
 704         }
 705         if (hdw->tuner_signal_info.capability & V4L2_TUNER_CAP_LOW) {
 706                 fv = (fv * 125) / 2;
 707         } else {
 708                 fv = fv * 62500;
 709         }
 710         *vp = fv;
 711         return 0;
 712 }
 713
 714 static int ctrl_freq_min_get(struct pvr2_ctrl *cptr, int *vp)
 715 {
 716         unsigned long fv;
 717         struct pvr2_hdw *hdw = cptr->hdw;
 718         if (hdw->tuner_signal_stale) {
 719                 pvr2_hdw_status_poll(hdw);
 720         }
 721         fv = hdw->tuner_signal_info.rangelow;
 722         if (!fv) {
 723                 /* Safety fallback */
 724                 *vp = TV_MIN_FREQ;
 725                 return 0;
 726         }
 727         if (hdw->tuner_signal_info.capability & V4L2_TUNER_CAP_LOW) {
 728                 fv = (fv * 125) / 2;
 729         } else {
 730                 fv = fv * 62500;
 731         }
 732         *vp = fv;
 733         return 0;
 734 }
 735
 736 static int ctrl_cx2341x_is_dirty(struct pvr2_ctrl *cptr)
 737 {
 738         return cptr->hdw->enc_stale != 0;
 739 }
 740
 741 static void ctrl_cx2341x_clear_dirty(struct pvr2_ctrl *cptr)
 742 {
 743         cptr->hdw->enc_stale = 0;
 744         cptr->hdw->enc_unsafe_stale = 0;
 745 }
 746
 747 static int ctrl_cx2341x_get(struct pvr2_ctrl *cptr,int *vp)
 748 {
 749         int ret;
 750         struct v4l2_ext_controls cs;
 751         struct v4l2_ext_control c1;
 752         memset(&cs,0,sizeof(cs));
 753         memset(&c1,0,sizeof(c1));
 754         cs.controls = &c1;
 755         cs.count = 1;
 756         c1.id = cptr->info->v4l_id;
 757         ret = cx2341x_ext_ctrls(&cptr->hdw->enc_ctl_state, 0, &cs,
 758                                 VIDIOC_G_EXT_CTRLS);
 759         if (ret) return ret;
 760         *vp = c1.value;
 761         return 0;
 762 }
 763
 764 static int ctrl_cx2341x_set(struct pvr2_ctrl *cptr,int m,int v)
 765 {
 766         int ret;
 767         struct pvr2_hdw *hdw = cptr->hdw;
 768         struct v4l2_ext_controls cs;
 769         struct v4l2_ext_control c1;
 770         memset(&cs,0,sizeof(cs));
 771         memset(&c1,0,sizeof(c1));
 772         cs.controls = &c1;
 773         cs.count = 1;
 774         c1.id = cptr->info->v4l_id;
 775         c1.value = v;
 776         ret = cx2341x_ext_ctrls(&hdw->enc_ctl_state,
 777                                 hdw->state_encoder_run, &cs,
 778                                 VIDIOC_S_EXT_CTRLS);
 779         if (ret == -EBUSY) {
 780                 /* Oops.  cx2341x is telling us it's not safe to change
 781                    this control while we're capturing.  Make a note of this
 782                    fact so that the pipeline will be stopped the next time
 783                    controls are committed.  Then go on ahead and store this
 784                    change anyway. */
 785                 ret = cx2341x_ext_ctrls(&hdw->enc_ctl_state,
 786                                         0, &cs,
 787                                         VIDIOC_S_EXT_CTRLS);
 788                 if (!ret) hdw->enc_unsafe_stale = !0;
 789         }
 790         if (ret) return ret;
 791         hdw->enc_stale = !0;
 792         return 0;
 793 }
 794
 795 static unsigned int ctrl_cx2341x_getv4lflags(struct pvr2_ctrl *cptr)
 796 {
 797         struct v4l2_queryctrl qctrl;
 798         struct pvr2_ctl_info *info;
 799         qctrl.id = cptr->info->v4l_id;
 800         cx2341x_ctrl_query(&cptr->hdw->enc_ctl_state,&qctrl);
 801         /* Strip out the const so we can adjust a function pointer.  It's
 802            OK to do this here because we know this is a dynamically created
 803            control, so the underlying storage for the info pointer is (a)
 804            private to us, and (b) not in read-only storage.  Either we do
 805            this or we significantly complicate the underlying control
 806            implementation. */
 807         info = (struct pvr2_ctl_info *)(cptr->info);
 808         if (qctrl.flags & V4L2_CTRL_FLAG_READ_ONLY) {
 809                 if (info->set_value) {
 810                         info->set_value = NULL;
 811                 }
 812         } else {
 813                 if (!(info->set_value)) {
 814                         info->set_value = ctrl_cx2341x_set;
 815                 }
 816         }
 817         return qctrl.flags;
 818 }
 819
 820 static int ctrl_streamingenabled_get(struct pvr2_ctrl *cptr,int *vp)
 821 {
 822         *vp = cptr->hdw->state_pipeline_req;
 823         return 0;
 824 }
 825
 826 static int ctrl_masterstate_get(struct pvr2_ctrl *cptr,int *vp)
 827 {
 828         *vp = cptr->hdw->master_state;
 829         return 0;
 830 }
 831
 832 static int ctrl_hsm_get(struct pvr2_ctrl *cptr,int *vp)
 833 {
 834         int result = pvr2_hdw_is_hsm(cptr->hdw);
 835         *vp = PVR2_CVAL_HSM_FULL;
 836         if (result < 0) *vp = PVR2_CVAL_HSM_FAIL;
 837         if (result) *vp = PVR2_CVAL_HSM_HIGH;
 838         return 0;
 839 }
 840
 841 static int ctrl_stddetect_get(struct pvr2_ctrl *cptr, int *vp)
 842 {
 843         *vp = pvr2_hdw_get_detected_std(cptr->hdw);
 844         return 0;
 845 }
 846
 847 static int ctrl_stdavail_get(struct pvr2_ctrl *cptr,int *vp)
 848 {
 849         *vp = cptr->hdw->std_mask_avail;
 850         return 0;
 851 }
 852
 853 static int ctrl_stdavail_set(struct pvr2_ctrl *cptr,int m,int v)
 854 {
 855         struct pvr2_hdw *hdw = cptr->hdw;
 856         v4l2_std_id ns;
 857         ns = hdw->std_mask_avail;
 858         ns = (ns & ~m) | (v & m);
 859         if (ns == hdw->std_mask_avail) return 0;
 860         hdw->std_mask_avail = ns;
 861         hdw->std_info_cur.def.type_bitmask.valid_bits = hdw->std_mask_avail;
 862         return 0;
 863 }
 864
 865 static int ctrl_std_val_to_sym(struct pvr2_ctrl *cptr,int msk,int val,
 866                                char *bufPtr,unsigned int bufSize,
 867                                unsigned int *len)
 868 {
 869         *len = pvr2_std_id_to_str(bufPtr,bufSize,msk & val);
 870         return 0;
 871 }
 872
 873 static int ctrl_std_sym_to_val(struct pvr2_ctrl *cptr,
 874                                const char *bufPtr,unsigned int bufSize,
 875                                int *mskp,int *valp)
 876 {
 877         int ret;
 878         v4l2_std_id id;
 879         ret = pvr2_std_str_to_id(&id,bufPtr,bufSize);
 880         if (ret < 0) return ret;
 881         if (mskp) *mskp = id;
 882         if (valp) *valp = id;
 883         return 0;
 884 }
 885
 886 static int ctrl_stdcur_get(struct pvr2_ctrl *cptr,int *vp)
 887 {
 888         *vp = cptr->hdw->std_mask_cur;
 889         return 0;
 890 }
 891
 892 static int ctrl_stdcur_set(struct pvr2_ctrl *cptr,int m,int v)
 893 {
 894         struct pvr2_hdw *hdw = cptr->hdw;
 895         v4l2_std_id ns;
 896         ns = hdw->std_mask_cur;
 897         ns = (ns & ~m) | (v & m);
 898         if (ns == hdw->std_mask_cur) return 0;
 899         hdw->std_mask_cur = ns;
 900         hdw->std_dirty = !0;
 901         return 0;
 902 }
 903
 904 static int ctrl_stdcur_is_dirty(struct pvr2_ctrl *cptr)
 905 {
 906         return cptr->hdw->std_dirty != 0;
 907 }
 908
 909 static void ctrl_stdcur_clear_dirty(struct pvr2_ctrl *cptr)
 910 {
 911         cptr->hdw->std_dirty = 0;
 912 }
 913
 914 static int ctrl_signal_get(struct pvr2_ctrl *cptr,int *vp)
 915 {
 916         struct pvr2_hdw *hdw = cptr->hdw;
 917         pvr2_hdw_status_poll(hdw);
 918         *vp = hdw->tuner_signal_info.signal;
 919         return 0;
 920 }
 921
 922 static int ctrl_audio_modes_present_get(struct pvr2_ctrl *cptr,int *vp)
 923 {
 924         int val = 0;
 925         unsigned int subchan;
 926         struct pvr2_hdw *hdw = cptr->hdw;
 927         pvr2_hdw_status_poll(hdw);
 928         subchan = hdw->tuner_signal_info.rxsubchans;
 929         if (subchan & V4L2_TUNER_SUB_MONO) {
 930                 val |= (1 << V4L2_TUNER_MODE_MONO);
 931         }
 932         if (subchan & V4L2_TUNER_SUB_STEREO) {
 933                 val |= (1 << V4L2_TUNER_MODE_STEREO);
 934         }
 935         if (subchan & V4L2_TUNER_SUB_LANG1) {
 936                 val |= (1 << V4L2_TUNER_MODE_LANG1);
 937         }
 938         if (subchan & V4L2_TUNER_SUB_LANG2) {
 939                 val |= (1 << V4L2_TUNER_MODE_LANG2);
 940         }
 941         *vp = val;
 942         return 0;
 943 }
 944
 945
 946 #define DEFINT(vmin,vmax) \
 947         .type = pvr2_ctl_int, \
 948         .def.type_int.min_value = vmin, \
 949         .def.type_int.max_value = vmax
 950
 951 #define DEFENUM(tab) \
 952         .type = pvr2_ctl_enum, \
 953         .def.type_enum.count = ARRAY_SIZE(tab), \
 954         .def.type_enum.value_names = tab
 955
 956 #define DEFBOOL \
 957         .type = pvr2_ctl_bool
 958
 959 #define DEFMASK(msk,tab) \
 960         .type = pvr2_ctl_bitmask, \
 961         .def.type_bitmask.valid_bits = msk, \
 962         .def.type_bitmask.bit_names = tab
 963
 964 #define DEFREF(vname) \
 965         .set_value = ctrl_set_##vname, \
 966         .get_value = ctrl_get_##vname, \
 967         .is_dirty = ctrl_isdirty_##vname, \
 968         .clear_dirty = ctrl_cleardirty_##vname
 969
 970
 971 #define VCREATE_FUNCS(vname) \
 972 static int ctrl_get_##vname(struct pvr2_ctrl *cptr,int *vp) \
 973 {*vp = cptr->hdw->vname##_val; return 0;} \
 974 static int ctrl_set_##vname(struct pvr2_ctrl *cptr,int m,int v) \
 975 {cptr->hdw->vname##_val = v; cptr->hdw->vname##_dirty = !0; return 0;} \
 976 static int ctrl_isdirty_##vname(struct pvr2_ctrl *cptr) \
 977 {return cptr->hdw->vname##_dirty != 0;} \
 978 static void ctrl_cleardirty_##vname(struct pvr2_ctrl *cptr) \
 979 {cptr->hdw->vname##_dirty = 0;}
 980
 981 VCREATE_FUNCS(brightness)
 982 VCREATE_FUNCS(contrast)
 983 VCREATE_FUNCS(saturation)
 984 VCREATE_FUNCS(hue)
 985 VCREATE_FUNCS(volume)
 986 VCREATE_FUNCS(balance)
 987 VCREATE_FUNCS(bass)
 988 VCREATE_FUNCS(treble)
 989 VCREATE_FUNCS(mute)
 990 VCREATE_FUNCS(cropl)
 991 VCREATE_FUNCS(cropt)
 992 VCREATE_FUNCS(cropw)
 993 VCREATE_FUNCS(croph)
 994 VCREATE_FUNCS(audiomode)
 995 VCREATE_FUNCS(res_hor)
 996 VCREATE_FUNCS(res_ver)
 997 VCREATE_FUNCS(srate)
 998
 999 /* Table definition of all controls which can be manipulated */
1000 static const struct pvr2_ctl_info control_defs[] = {
1001         {
1002                 .v4l_id = V4L2_CID_BRIGHTNESS,
1003                 .desc = "Brightness",
1004                 .name = "brightness",
1005                 .default_value = 128,
1006                 DEFREF(brightness),
1007                 DEFINT(0,255),
1008         },{
1009                 .v4l_id = V4L2_CID_CONTRAST,
1010                 .desc = "Contrast",
1011                 .name = "contrast",
1012                 .default_value = 68,
1013                 DEFREF(contrast),
1014                 DEFINT(0,127),
1015         },{
1016                 .v4l_id = V4L2_CID_SATURATION,
1017                 .desc = "Saturation",
1018                 .name = "saturation",
1019                 .default_value = 64,
1020                 DEFREF(saturation),
1021                 DEFINT(0,127),
1022         },{
1023                 .v4l_id = V4L2_CID_HUE,
1024                 .desc = "Hue",
1025                 .name = "hue",
1026                 .default_value = 0,
1027                 DEFREF(hue),
1028                 DEFINT(-128,127),
1029         },{
1030                 .v4l_id = V4L2_CID_AUDIO_VOLUME,
1031                 .desc = "Volume",
1032                 .name = "volume",
1033                 .default_value = 62000,
1034                 DEFREF(volume),
1035                 DEFINT(0,65535),
1036         },{
1037                 .v4l_id = V4L2_CID_AUDIO_BALANCE,
1038                 .desc = "Balance",
1039                 .name = "balance",
1040                 .default_value = 0,
1041                 DEFREF(balance),
1042                 DEFINT(-32768,32767),
1043         },{
1044                 .v4l_id = V4L2_CID_AUDIO_BASS,
1045                 .desc = "Bass",
1046                 .name = "bass",
1047                 .default_value = 0,
1048                 DEFREF(bass),
1049                 DEFINT(-32768,32767),
1050         },{
1051                 .v4l_id = V4L2_CID_AUDIO_TREBLE,
1052                 .desc = "Treble",
1053                 .name = "treble",
1054                 .default_value = 0,
1055                 DEFREF(treble),
1056                 DEFINT(-32768,32767),
1057         },{
1058                 .v4l_id = V4L2_CID_AUDIO_MUTE,
1059                 .desc = "Mute",
1060                 .name = "mute",
1061                 .default_value = 0,
1062                 DEFREF(mute),
1063                 DEFBOOL,
1064         }, {
1065                 .desc = "Capture crop left margin",
1066                 .name = "crop_left",
1067                 .internal_id = PVR2_CID_CROPL,
1068                 .default_value = 0,
1069                 DEFREF(cropl),
1070                 DEFINT(-129, 340),
1071                 .get_min_value = ctrl_cropl_min_get,
1072                 .get_max_value = ctrl_cropl_max_get,
1073                 .get_def_value = ctrl_get_cropcapdl,
1074         }, {
1075                 .desc = "Capture crop top margin",
1076                 .name = "crop_top",
1077                 .internal_id = PVR2_CID_CROPT,
1078                 .default_value = 0,
1079                 DEFREF(cropt),
1080                 DEFINT(-35, 544),
1081                 .get_min_value = ctrl_cropt_min_get,
1082                 .get_max_value = ctrl_cropt_max_get,
1083                 .get_def_value = ctrl_get_cropcapdt,
1084         }, {
1085                 .desc = "Capture crop width",
1086                 .name = "crop_width",
1087                 .internal_id = PVR2_CID_CROPW,
1088                 .default_value = 720,
1089                 DEFREF(cropw),
1090                 DEFINT(0, 864),
1091                 .get_max_value = ctrl_cropw_max_get,
1092                 .get_def_value = ctrl_get_cropcapdw,
1093         }, {
1094                 .desc = "Capture crop height",
1095                 .name = "crop_height",
1096                 .internal_id = PVR2_CID_CROPH,
1097                 .default_value = 480,
1098                 DEFREF(croph),
1099                 DEFINT(0, 576),
1100                 .get_max_value = ctrl_croph_max_get,
1101                 .get_def_value = ctrl_get_cropcapdh,
1102         }, {
1103                 .desc = "Capture capability pixel aspect numerator",
1104                 .name = "cropcap_pixel_numerator",
1105                 .internal_id = PVR2_CID_CROPCAPPAN,
1106                 .get_value = ctrl_get_cropcappan,
1107         }, {
1108                 .desc = "Capture capability pixel aspect denominator",
1109                 .name = "cropcap_pixel_denominator",
1110                 .internal_id = PVR2_CID_CROPCAPPAD,
1111                 .get_value = ctrl_get_cropcappad,
1112         }, {
1113                 .desc = "Capture capability bounds top",
1114                 .name = "cropcap_bounds_top",
1115                 .internal_id = PVR2_CID_CROPCAPBT,
1116                 .get_value = ctrl_get_cropcapbt,
1117         }, {
1118                 .desc = "Capture capability bounds left",
1119                 .name = "cropcap_bounds_left",
1120                 .internal_id = PVR2_CID_CROPCAPBL,
1121                 .get_value = ctrl_get_cropcapbl,
1122         }, {
1123                 .desc = "Capture capability bounds width",
1124                 .name = "cropcap_bounds_width",
1125                 .internal_id = PVR2_CID_CROPCAPBW,
1126                 .get_value = ctrl_get_cropcapbw,
1127         }, {
1128                 .desc = "Capture capability bounds height",
1129                 .name = "cropcap_bounds_height",
1130                 .internal_id = PVR2_CID_CROPCAPBH,
1131                 .get_value = ctrl_get_cropcapbh,
1132         },{
1133                 .desc = "Video Source",
1134                 .name = "input",
1135                 .internal_id = PVR2_CID_INPUT,
1136                 .default_value = PVR2_CVAL_INPUT_TV,
1137                 .check_value = ctrl_check_input,
1138                 DEFREF(input),
1139                 DEFENUM(control_values_input),
1140         },{
1141                 .desc = "Audio Mode",
1142                 .name = "audio_mode",
1143                 .internal_id = PVR2_CID_AUDIOMODE,
1144                 .default_value = V4L2_TUNER_MODE_STEREO,
1145                 DEFREF(audiomode),
1146                 DEFENUM(control_values_audiomode),
1147         },{
1148                 .desc = "Horizontal capture resolution",
1149                 .name = "resolution_hor",
1150                 .internal_id = PVR2_CID_HRES,
1151                 .default_value = 720,
1152                 DEFREF(res_hor),
1153                 DEFINT(19,720),
1154         },{
1155                 .desc = "Vertical capture resolution",
1156                 .name = "resolution_ver",
1157                 .internal_id = PVR2_CID_VRES,
1158                 .default_value = 480,
1159                 DEFREF(res_ver),
1160                 DEFINT(17,576),
1161                 /* Hook in check for video standard and adjust maximum
1162                    depending on the standard. */
1163                 .get_max_value = ctrl_vres_max_get,
1164                 .get_min_value = ctrl_vres_min_get,
1165         },{
1166                 .v4l_id = V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
1167                 .default_value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
1168                 .desc = "Audio Sampling Frequency",
1169                 .name = "srate",
1170                 DEFREF(srate),
1171                 DEFENUM(control_values_srate),
1172         },{
1173                 .desc = "Tuner Frequency (Hz)",
1174                 .name = "frequency",
1175                 .internal_id = PVR2_CID_FREQUENCY,
1176                 .default_value = 0,
1177                 .set_value = ctrl_freq_set,
1178                 .get_value = ctrl_freq_get,
1179                 .is_dirty = ctrl_freq_is_dirty,
1180                 .clear_dirty = ctrl_freq_clear_dirty,
1181                 DEFINT(0,0),
1182                 /* Hook in check for input value (tv/radio) and adjust
1183                    max/min values accordingly */
1184                 .get_max_value = ctrl_freq_max_get,
1185                 .get_min_value = ctrl_freq_min_get,
1186         },{
1187                 .desc = "Channel",
1188                 .name = "channel",
1189                 .set_value = ctrl_channel_set,
1190                 .get_value = ctrl_channel_get,
1191                 DEFINT(0,FREQTABLE_SIZE),
1192         },{
1193                 .desc = "Channel Program Frequency",
1194                 .name = "freq_table_value",
1195                 .set_value = ctrl_channelfreq_set,
1196                 .get_value = ctrl_channelfreq_get,
1197                 DEFINT(0,0),
1198                 /* Hook in check for input value (tv/radio) and adjust
1199                    max/min values accordingly */
1200                 .get_max_value = ctrl_freq_max_get,
1201                 .get_min_value = ctrl_freq_min_get,
1202         },{
1203                 .desc = "Channel Program ID",
1204                 .name = "freq_table_channel",
1205                 .set_value = ctrl_channelprog_set,
1206                 .get_value = ctrl_channelprog_get,
1207                 DEFINT(0,FREQTABLE_SIZE),
1208         },{
1209                 .desc = "Streaming Enabled",
1210                 .name = "streaming_enabled",
1211                 .get_value = ctrl_streamingenabled_get,
1212                 DEFBOOL,
1213         },{
1214                 .desc = "USB Speed",
1215                 .name = "usb_speed",
1216                 .get_value = ctrl_hsm_get,
1217                 DEFENUM(control_values_hsm),
1218         },{
1219                 .desc = "Master State",
1220                 .name = "master_state",
1221                 .get_value = ctrl_masterstate_get,
1222                 DEFENUM(pvr2_state_names),
1223         },{
1224                 .desc = "Signal Present",
1225                 .name = "signal_present",
1226                 .get_value = ctrl_signal_get,
1227                 DEFINT(0,65535),
1228         },{
1229                 .desc = "Audio Modes Present",
1230                 .name = "audio_modes_present",
1231                 .get_value = ctrl_audio_modes_present_get,
1232                 /* For this type we "borrow" the V4L2_TUNER_MODE enum from
1233                    v4l.  Nothing outside of this module cares about this,
1234                    but I reuse it in order to also reuse the
1235                    control_values_audiomode string table. */
1236                 DEFMASK(((1 << V4L2_TUNER_MODE_MONO)|
1237                          (1 << V4L2_TUNER_MODE_STEREO)|
1238                          (1 << V4L2_TUNER_MODE_LANG1)|
1239                          (1 << V4L2_TUNER_MODE_LANG2)),
1240                         control_values_audiomode),
1241         },{
1242                 .desc = "Video Standards Available Mask",
1243                 .name = "video_standard_mask_available",
1244                 .internal_id = PVR2_CID_STDAVAIL,
1245                 .skip_init = !0,
1246                 .get_value = ctrl_stdavail_get,
1247                 .set_value = ctrl_stdavail_set,
1248                 .val_to_sym = ctrl_std_val_to_sym,
1249                 .sym_to_val = ctrl_std_sym_to_val,
1250                 .type = pvr2_ctl_bitmask,
1251         },{
1252                 .desc = "Video Standards In Use Mask",
1253                 .name = "video_standard_mask_active",
1254                 .internal_id = PVR2_CID_STDCUR,
1255                 .skip_init = !0,
1256                 .get_value = ctrl_stdcur_get,
1257                 .set_value = ctrl_stdcur_set,
1258                 .is_dirty = ctrl_stdcur_is_dirty,
1259                 .clear_dirty = ctrl_stdcur_clear_dirty,
1260                 .val_to_sym = ctrl_std_val_to_sym,
1261                 .sym_to_val = ctrl_std_sym_to_val,
1262                 .type = pvr2_ctl_bitmask,
1263         },{
1264                 .desc = "Video Standards Detected Mask",
1265                 .name = "video_standard_mask_detected",
1266                 .internal_id = PVR2_CID_STDDETECT,
1267                 .skip_init = !0,
1268                 .get_value = ctrl_stddetect_get,
1269                 .val_to_sym = ctrl_std_val_to_sym,
1270                 .sym_to_val = ctrl_std_sym_to_val,
1271                 .type = pvr2_ctl_bitmask,
1272         }
1273 };
1274
1275 #define CTRLDEF_COUNT ARRAY_SIZE(control_defs)
1276
1277
1278 const char *pvr2_config_get_name(enum pvr2_config cfg)
1279 {
1280         switch (cfg) {
1281         case pvr2_config_empty: return "empty";
1282         case pvr2_config_mpeg: return "mpeg";
1283         case pvr2_config_vbi: return "vbi";
1284         case pvr2_config_pcm: return "pcm";
1285         case pvr2_config_rawvideo: return "raw video";
1286         }
1287         return "<unknown>";
1288 }
1289
1290
1291 struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *hdw)
1292 {
1293         return hdw->usb_dev;
1294 }
1295
1296
1297 unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *hdw)
1298 {
1299         return hdw->serial_number;
1300 }
1301
1302
1303 const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *hdw)
1304 {
1305         return hdw->bus_info;
1306 }
1307
1308
1309 const char *pvr2_hdw_get_device_identifier(struct pvr2_hdw *hdw)
1310 {
1311         return hdw->identifier;
1312 }
1313
1314
1315 unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *hdw)
1316 {
1317         return hdw->freqSelector ? hdw->freqValTelevision : hdw->freqValRadio;
1318 }
1319
1320 /* Set the currently tuned frequency and account for all possible
1321    driver-core side effects of this action. */
1322 static void pvr2_hdw_set_cur_freq(struct pvr2_hdw *hdw,unsigned long val)
1323 {
1324         if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
1325                 if (hdw->freqSelector) {
1326                         /* Swing over to radio frequency selection */
1327                         hdw->freqSelector = 0;
1328                         hdw->freqDirty = !0;
1329                 }
1330                 if (hdw->freqValRadio != val) {
1331                         hdw->freqValRadio = val;
1332                         hdw->freqSlotRadio = 0;
1333                         hdw->freqDirty = !0;
1334                 }
1335         } else {
1336                 if (!(hdw->freqSelector)) {
1337                         /* Swing over to television frequency selection */
1338                         hdw->freqSelector = 1;
1339                         hdw->freqDirty = !0;
1340                 }
1341                 if (hdw->freqValTelevision != val) {
1342                         hdw->freqValTelevision = val;
1343                         hdw->freqSlotTelevision = 0;
1344                         hdw->freqDirty = !0;
1345                 }
1346         }
1347 }
1348
1349 int pvr2_hdw_get_unit_number(struct pvr2_hdw *hdw)
1350 {
1351         return hdw->unit_number;
1352 }
1353
1354
1355 /* Attempt to locate one of the given set of files.  Messages are logged
1356    appropriate to what has been found.  The return value will be 0 or
1357    greater on success (it will be the index of the file name found) and
1358    fw_entry will be filled in.  Otherwise a negative error is returned on
1359    failure.  If the return value is -ENOENT then no viable firmware file
1360    could be located. */
1361 static int pvr2_locate_firmware(struct pvr2_hdw *hdw,
1362                                 const struct firmware **fw_entry,
1363                                 const char *fwtypename,
1364                                 unsigned int fwcount,
1365                                 const char *fwnames[])
1366 {
1367         unsigned int idx;
1368         int ret = -EINVAL;
1369         for (idx = 0; idx < fwcount; idx++) {
1370                 ret = request_firmware(fw_entry,
1371                                        fwnames[idx],
1372                                        &hdw->usb_dev->dev);
1373                 if (!ret) {
1374                         trace_firmware("Located %s firmware: %s;"
1375                                        " uploading...",
1376                                        fwtypename,
1377                                        fwnames[idx]);
1378                         return idx;
1379                 }
1380                 if (ret == -ENOENT) continue;
1381                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1382                            "request_firmware fatal error with code=%d",ret);
1383                 return ret;
1384         }
1385         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1386                    "***WARNING***"
1387                    " Device %s firmware"
1388                    " seems to be missing.",
1389                    fwtypename);
1390         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1391                    "Did you install the pvrusb2 firmware files"
1392                    " in their proper location?");
1393         if (fwcount == 1) {
1394                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1395                            "request_firmware unable to locate %s file %s",
1396                            fwtypename,fwnames[0]);
1397         } else {
1398                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1399                            "request_firmware unable to locate"
1400                            " one of the following %s files:",
1401                            fwtypename);
1402                 for (idx = 0; idx < fwcount; idx++) {
1403                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1404                                    "request_firmware: Failed to find %s",
1405                                    fwnames[idx]);
1406                 }
1407         }
1408         return ret;
1409 }
1410
1411
1412 /*
1413  * pvr2_upload_firmware1().
1414  *
1415  * Send the 8051 firmware to the device.  After the upload, arrange for
1416  * device to re-enumerate.
1417  *
1418  * NOTE : the pointer to the firmware data given by request_firmware()
1419  * is not suitable for an usb transaction.
1420  *
1421  */
1422 static int pvr2_upload_firmware1(struct pvr2_hdw *hdw)
1423 {
1424         const struct firmware *fw_entry = NULL;
1425         void  *fw_ptr;
1426         unsigned int pipe;
1427         unsigned int fwsize;
1428         int ret;
1429         u16 address;
1430
1431         if (!hdw->hdw_desc->fx2_firmware.cnt) {
1432                 hdw->fw1_state = FW1_STATE_OK;
1433                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1434                            "Connected device type defines"
1435                            " no firmware to upload; ignoring firmware");
1436                 return -ENOTTY;
1437         }
1438
1439         hdw->fw1_state = FW1_STATE_FAILED; // default result
1440
1441         trace_firmware("pvr2_upload_firmware1");
1442
1443         ret = pvr2_locate_firmware(hdw,&fw_entry,"fx2 controller",
1444                                    hdw->hdw_desc->fx2_firmware.cnt,
1445                                    hdw->hdw_desc->fx2_firmware.lst);
1446         if (ret < 0) {
1447                 if (ret == -ENOENT) hdw->fw1_state = FW1_STATE_MISSING;
1448                 return ret;
1449         }
1450
1451         usb_clear_halt(hdw->usb_dev, usb_sndbulkpipe(hdw->usb_dev, 0 & 0x7f));
1452
1453         pipe = usb_sndctrlpipe(hdw->usb_dev, 0);
1454         fwsize = fw_entry->size;
1455
1456         if ((fwsize != 0x2000) &&
1457             (!(hdw->hdw_desc->flag_fx2_16kb && (fwsize == 0x4000)))) {
1458                 if (hdw->hdw_desc->flag_fx2_16kb) {
1459                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1460                                    "Wrong fx2 firmware size"
1461                                    " (expected 8192 or 16384, got %u)",
1462                                    fwsize);
1463                 } else {
1464                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1465                                    "Wrong fx2 firmware size"
1466                                    " (expected 8192, got %u)",
1467                                    fwsize);
1468                 }
1469                 release_firmware(fw_entry);
1470                 return -ENOMEM;
1471         }
1472
1473         fw_ptr = kmalloc(0x800, GFP_KERNEL);
1474         if (fw_ptr == NULL){
1475                 release_firmware(fw_entry);
1476                 return -ENOMEM;
1477         }
1478
1479         /* We have to hold the CPU during firmware upload. */
1480         pvr2_hdw_cpureset_assert(hdw,1);
1481
1482         /* upload the firmware to address 0000-1fff in 2048 (=0x800) bytes
1483            chunk. */
1484
1485         ret = 0;
1486         for (address = 0; address < fwsize; address += 0x800) {
1487                 memcpy(fw_ptr, fw_entry->data + address, 0x800);
1488                 ret += usb_control_msg(hdw->usb_dev, pipe, 0xa0, 0x40, address,
1489                                        0, fw_ptr, 0x800, HZ);
1490         }
1491
1492         trace_firmware("Upload done, releasing device's CPU");
1493
1494         /* Now release the CPU.  It will disconnect and reconnect later. */
1495         pvr2_hdw_cpureset_assert(hdw,0);
1496
1497         kfree(fw_ptr);
1498         release_firmware(fw_entry);
1499
1500         trace_firmware("Upload done (%d bytes sent)",ret);
1501
1502         /* We should have written fwsize bytes */
1503         if (ret == fwsize) {
1504                 hdw->fw1_state = FW1_STATE_RELOAD;
1505                 return 0;
1506         }
1507
1508         return -EIO;
1509 }
1510
1511
1512 /*
1513  * pvr2_upload_firmware2()
1514  *
1515  * This uploads encoder firmware on endpoint 2.
1516  *
1517  */
1518
1519 int pvr2_upload_firmware2(struct pvr2_hdw *hdw)
1520 {
1521         const struct firmware *fw_entry = NULL;
1522         void  *fw_ptr;
1523         unsigned int pipe, fw_len, fw_done, bcnt, icnt;
1524         int actual_length;
1525         int ret = 0;
1526         int fwidx;
1527         static const char *fw_files[] = {
1528                 CX2341X_FIRM_ENC_FILENAME,
1529         };
1530
1531         if (hdw->hdw_desc->flag_skip_cx23416_firmware) {
1532                 return 0;
1533         }
1534
1535         trace_firmware("pvr2_upload_firmware2");
1536
1537         ret = pvr2_locate_firmware(hdw,&fw_entry,"encoder",
1538                                    ARRAY_SIZE(fw_files), fw_files);
1539         if (ret < 0) return ret;
1540         fwidx = ret;
1541         ret = 0;
1542         /* Since we're about to completely reinitialize the encoder,
1543            invalidate our cached copy of its configuration state.  Next
1544            time we configure the encoder, then we'll fully configure it. */
1545         hdw->enc_cur_valid = 0;
1546
1547         /* Encoder is about to be reset so note that as far as we're
1548            concerned now, the encoder has never been run. */
1549         del_timer_sync(&hdw->encoder_run_timer);
1550         if (hdw->state_encoder_runok) {
1551                 hdw->state_encoder_runok = 0;
1552                 trace_stbit("state_encoder_runok",hdw->state_encoder_runok);
1553         }
1554
1555         /* First prepare firmware loading */
1556         ret |= pvr2_write_register(hdw, 0x0048, 0xffffffff); /*interrupt mask*/
1557         ret |= pvr2_hdw_gpio_chg_dir(hdw,0xffffffff,0x00000088); /*gpio dir*/
1558         ret |= pvr2_hdw_gpio_chg_out(hdw,0xffffffff,0x00000008); /*gpio output state*/
1559         ret |= pvr2_hdw_cmd_deep_reset(hdw);
1560         ret |= pvr2_write_register(hdw, 0xa064, 0x00000000); /*APU command*/
1561         ret |= pvr2_hdw_gpio_chg_dir(hdw,0xffffffff,0x00000408); /*gpio dir*/
1562         ret |= pvr2_hdw_gpio_chg_out(hdw,0xffffffff,0x00000008); /*gpio output state*/
1563         ret |= pvr2_write_register(hdw, 0x9058, 0xffffffed); /*VPU ctrl*/
1564         ret |= pvr2_write_register(hdw, 0x9054, 0xfffffffd); /*reset hw blocks*/
1565         ret |= pvr2_write_register(hdw, 0x07f8, 0x80000800); /*encoder SDRAM refresh*/
1566         ret |= pvr2_write_register(hdw, 0x07fc, 0x0000001a); /*encoder SDRAM pre-charge*/
1567         ret |= pvr2_write_register(hdw, 0x0700, 0x00000000); /*I2C clock*/
1568         ret |= pvr2_write_register(hdw, 0xaa00, 0x00000000); /*unknown*/
1569         ret |= pvr2_write_register(hdw, 0xaa04, 0x00057810); /*unknown*/
1570         ret |= pvr2_write_register(hdw, 0xaa10, 0x00148500); /*unknown*/
1571         ret |= pvr2_write_register(hdw, 0xaa18, 0x00840000); /*unknown*/
1572         ret |= pvr2_issue_simple_cmd(hdw,FX2CMD_FWPOST1);
1573         ret |= pvr2_issue_simple_cmd(hdw,FX2CMD_MEMSEL | (1 << 8) | (0 << 16));
1574
1575         if (ret) {
1576                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1577                            "firmware2 upload prep failed, ret=%d",ret);
1578                 release_firmware(fw_entry);
1579                 goto done;
1580         }
1581
1582         /* Now send firmware */
1583
1584         fw_len = fw_entry->size;
1585
1586         if (fw_len % sizeof(u32)) {
1587                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1588                            "size of %s firmware"
1589                            " must be a multiple of %zu bytes",
1590                            fw_files[fwidx],sizeof(u32));
1591                 release_firmware(fw_entry);
1592                 ret = -EINVAL;
1593                 goto done;
1594         }
1595
1596         fw_ptr = kmalloc(FIRMWARE_CHUNK_SIZE, GFP_KERNEL);
1597         if (fw_ptr == NULL){
1598                 release_firmware(fw_entry);
1599                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1600                            "failed to allocate memory for firmware2 upload");
1601                 ret = -ENOMEM;
1602                 goto done;
1603         }
1604
1605         pipe = usb_sndbulkpipe(hdw->usb_dev, PVR2_FIRMWARE_ENDPOINT);
1606
1607         fw_done = 0;
1608         for (fw_done = 0; fw_done < fw_len;) {
1609                 bcnt = fw_len - fw_done;
1610                 if (bcnt > FIRMWARE_CHUNK_SIZE) bcnt = FIRMWARE_CHUNK_SIZE;
1611                 memcpy(fw_ptr, fw_entry->data + fw_done, bcnt);
1612                 /* Usbsnoop log shows that we must swap bytes... */
1613                 /* Some background info: The data being swapped here is a
1614                    firmware image destined for the mpeg encoder chip that
1615                    lives at the other end of a USB endpoint.  The encoder
1616                    chip always talks in 32 bit chunks and its storage is
1617                    organized into 32 bit words.  However from the file
1618                    system to the encoder chip everything is purely a byte
1619                    stream.  The firmware file's contents are always 32 bit
1620                    swapped from what the encoder expects.  Thus the need
1621                    always exists to swap the bytes regardless of the endian
1622                    type of the host processor and therefore swab32() makes
1623                    the most sense. */
1624                 for (icnt = 0; icnt < bcnt/4 ; icnt++)
1625                         ((u32 *)fw_ptr)[icnt] = swab32(((u32 *)fw_ptr)[icnt]);
1626
1627                 ret |= usb_bulk_msg(hdw->usb_dev, pipe, fw_ptr,bcnt,
1628                                     &actual_length, HZ);
1629                 ret |= (actual_length != bcnt);
1630                 if (ret) break;
1631                 fw_done += bcnt;
1632         }
1633
1634         trace_firmware("upload of %s : %i / %i ",
1635                        fw_files[fwidx],fw_done,fw_len);
1636
1637         kfree(fw_ptr);
1638         release_firmware(fw_entry);
1639
1640         if (ret) {
1641                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1642                            "firmware2 upload transfer failure");
1643                 goto done;
1644         }
1645
1646         /* Finish upload */
1647
1648         ret |= pvr2_write_register(hdw, 0x9054, 0xffffffff); /*reset hw blocks*/
1649         ret |= pvr2_write_register(hdw, 0x9058, 0xffffffe8); /*VPU ctrl*/
1650         ret |= pvr2_issue_simple_cmd(hdw,FX2CMD_MEMSEL | (1 << 8) | (0 << 16));
1651
1652         if (ret) {
1653                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1654                            "firmware2 upload post-proc failure");
1655         }
1656
1657  done:
1658         if (hdw->hdw_desc->signal_routing_scheme ==
1659             PVR2_ROUTING_SCHEME_GOTVIEW) {
1660                 /* Ensure that GPIO 11 is set to output for GOTVIEW
1661                    hardware. */
1662                 pvr2_hdw_gpio_chg_dir(hdw,(1 << 11),~0);
1663         }
1664         return ret;
1665 }
1666
1667
1668 static const char *pvr2_get_state_name(unsigned int st)
1669 {
1670         if (st < ARRAY_SIZE(pvr2_state_names)) {
1671                 return pvr2_state_names[st];
1672         }
1673         return "???";
1674 }
1675
1676 static int pvr2_decoder_enable(struct pvr2_hdw *hdw,int enablefl)
1677 {
1678         /* Even though we really only care about the video decoder chip at
1679            this point, we'll broadcast stream on/off to all sub-devices
1680            anyway, just in case somebody else wants to hear the
1681            command... */
1682         pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 stream=%s",
1683                    (enablefl ? "on" : "off"));
1684         v4l2_device_call_all(&hdw->v4l2_dev, 0, video, s_stream, enablefl);
1685         v4l2_device_call_all(&hdw->v4l2_dev, 0, audio, s_stream, enablefl);
1686         if (hdw->decoder_client_id) {
1687                 /* We get here if the encoder has been noticed.  Otherwise
1688                    we'll issue a warning to the user (which should
1689                    normally never happen). */
1690                 return 0;
1691         }
1692         if (!hdw->flag_decoder_missed) {
1693                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1694                            "WARNING: No decoder present");
1695                 hdw->flag_decoder_missed = !0;
1696                 trace_stbit("flag_decoder_missed",
1697                             hdw->flag_decoder_missed);
1698         }
1699         return -EIO;
1700 }
1701
1702
1703 int pvr2_hdw_get_state(struct pvr2_hdw *hdw)
1704 {
1705         return hdw->master_state;
1706 }
1707
1708
1709 static int pvr2_hdw_untrip_unlocked(struct pvr2_hdw *hdw)
1710 {
1711         if (!hdw->flag_tripped) return 0;
1712         hdw->flag_tripped = 0;
1713         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
1714                    "Clearing driver error statuss");
1715         return !0;
1716 }
1717
1718
1719 int pvr2_hdw_untrip(struct pvr2_hdw *hdw)
1720 {
1721         int fl;
1722         LOCK_TAKE(hdw->big_lock); do {
1723                 fl = pvr2_hdw_untrip_unlocked(hdw);
1724         } while (0); LOCK_GIVE(hdw->big_lock);
1725         if (fl) pvr2_hdw_state_sched(hdw);
1726         return 0;
1727 }
1728
1729
1730
1731
1732 int pvr2_hdw_get_streaming(struct pvr2_hdw *hdw)
1733 {
1734         return hdw->state_pipeline_req != 0;
1735 }
1736
1737
1738 int pvr2_hdw_set_streaming(struct pvr2_hdw *hdw,int enable_flag)
1739 {
1740         int ret,st;
1741         LOCK_TAKE(hdw->big_lock); do {
1742                 pvr2_hdw_untrip_unlocked(hdw);
1743                 if ((!enable_flag) != !(hdw->state_pipeline_req)) {
1744                         hdw->state_pipeline_req = enable_flag != 0;
1745                         pvr2_trace(PVR2_TRACE_START_STOP,
1746                                    "/*--TRACE_STREAM--*/ %s",
1747                                    enable_flag ? "enable" : "disable");
1748                 }
1749                 pvr2_hdw_state_sched(hdw);
1750         } while (0); LOCK_GIVE(hdw->big_lock);
1751         if ((ret = pvr2_hdw_wait(hdw,0)) < 0) return ret;
1752         if (enable_flag) {
1753                 while ((st = hdw->master_state) != PVR2_STATE_RUN) {
1754                         if (st != PVR2_STATE_READY) return -EIO;
1755                         if ((ret = pvr2_hdw_wait(hdw,st)) < 0) return ret;
1756                 }
1757         }
1758         return 0;
1759 }
1760
1761
1762 int pvr2_hdw_set_stream_type(struct pvr2_hdw *hdw,enum pvr2_config config)
1763 {
1764         int fl;
1765         LOCK_TAKE(hdw->big_lock);
1766         if ((fl = (hdw->desired_stream_type != config)) != 0) {
1767                 hdw->desired_stream_type = config;
1768                 hdw->state_pipeline_config = 0;
1769                 trace_stbit("state_pipeline_config",
1770                             hdw->state_pipeline_config);
1771                 pvr2_hdw_state_sched(hdw);
1772         }
1773         LOCK_GIVE(hdw->big_lock);
1774         if (fl) return 0;
1775         return pvr2_hdw_wait(hdw,0);
1776 }
1777
1778
1779 static int get_default_tuner_type(struct pvr2_hdw *hdw)
1780 {
1781         int unit_number = hdw->unit_number;
1782         int tp = -1;
1783         if ((unit_number >= 0) && (unit_number < PVR_NUM)) {
1784                 tp = tuner[unit_number];
1785         }
1786         if (tp < 0) return -EINVAL;
1787         hdw->tuner_type = tp;
1788         hdw->tuner_updated = !0;
1789         return 0;
1790 }
1791
1792
1793 static v4l2_std_id get_default_standard(struct pvr2_hdw *hdw)
1794 {
1795         int unit_number = hdw->unit_number;
1796         int tp = 0;
1797         if ((unit_number >= 0) && (unit_number < PVR_NUM)) {
1798                 tp = video_std[unit_number];
1799                 if (tp) return tp;
1800         }
1801         return 0;
1802 }
1803
1804
1805 static unsigned int get_default_error_tolerance(struct pvr2_hdw *hdw)
1806 {
1807         int unit_number = hdw->unit_number;
1808         int tp = 0;
1809         if ((unit_number >= 0) && (unit_number < PVR_NUM)) {
1810                 tp = tolerance[unit_number];
1811         }
1812         return tp;
1813 }
1814
1815
1816 static int pvr2_hdw_check_firmware(struct pvr2_hdw *hdw)
1817 {
1818         /* Try a harmless request to fetch the eeprom's address over
1819            endpoint 1.  See what happens.  Only the full FX2 image can
1820            respond to this.  If this probe fails then likely the FX2
1821            firmware needs be loaded. */
1822         int result;
1823         LOCK_TAKE(hdw->ctl_lock); do {
1824                 hdw->cmd_buffer[0] = FX2CMD_GET_EEPROM_ADDR;
1825                 result = pvr2_send_request_ex(hdw,HZ*1,!0,
1826                                            hdw->cmd_buffer,1,
1827                                            hdw->cmd_buffer,1);
1828                 if (result < 0) break;
1829         } while(0); LOCK_GIVE(hdw->ctl_lock);
1830         if (result) {
1831                 pvr2_trace(PVR2_TRACE_INIT,
1832                            "Probe of device endpoint 1 result status %d",
1833                            result);
1834         } else {
1835                 pvr2_trace(PVR2_TRACE_INIT,
1836                            "Probe of device endpoint 1 succeeded");
1837         }
1838         return result == 0;
1839 }
1840
1841 struct pvr2_std_hack {
1842         v4l2_std_id pat;  /* Pattern to match */
1843         v4l2_std_id msk;  /* Which bits we care about */
1844         v4l2_std_id std;  /* What additional standards or default to set */
1845 };
1846
1847 /* This data structure labels specific combinations of standards from
1848    tveeprom that we'll try to recognize.  If we recognize one, then assume
1849    a specified default standard to use.  This is here because tveeprom only
1850    tells us about available standards not the intended default standard (if
1851    any) for the device in question.  We guess the default based on what has
1852    been reported as available.  Note that this is only for guessing a
1853    default - which can always be overridden explicitly - and if the user
1854    has otherwise named a default then that default will always be used in
1855    place of this table. */
1856 static const struct pvr2_std_hack std_eeprom_maps[] = {
1857         {       /* PAL(B/G) */
1858                 .pat = V4L2_STD_B|V4L2_STD_GH,
1859                 .std = V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_PAL_G,
1860         },
1861         {       /* NTSC(M) */
1862                 .pat = V4L2_STD_MN,
1863                 .std = V4L2_STD_NTSC_M,
1864         },
1865         {       /* PAL(I) */
1866                 .pat = V4L2_STD_PAL_I,
1867                 .std = V4L2_STD_PAL_I,
1868         },
1869         {       /* SECAM(L/L') */
1870                 .pat = V4L2_STD_SECAM_L|V4L2_STD_SECAM_LC,
1871                 .std = V4L2_STD_SECAM_L|V4L2_STD_SECAM_LC,
1872         },
1873         {       /* PAL(D/D1/K) */
1874                 .pat = V4L2_STD_DK,
1875                 .std = V4L2_STD_PAL_D|V4L2_STD_PAL_D1|V4L2_STD_PAL_K,
1876         },
1877 };
1878
1879 static void pvr2_hdw_setup_std(struct pvr2_hdw *hdw)
1880 {
1881         char buf[40];
1882         unsigned int bcnt;
1883         v4l2_std_id std1,std2,std3;
1884
1885         std1 = get_default_standard(hdw);
1886         std3 = std1 ? 0 : hdw->hdw_desc->default_std_mask;
1887
1888         bcnt = pvr2_std_id_to_str(buf,sizeof(buf),hdw->std_mask_eeprom);
1889         pvr2_trace(PVR2_TRACE_STD,
1890                    "Supported video standard(s) reported available"
1891                    " in hardware: %.*s",
1892                    bcnt,buf);
1893
1894         hdw->std_mask_avail = hdw->std_mask_eeprom;
1895
1896         std2 = (std1|std3) & ~hdw->std_mask_avail;
1897         if (std2) {
1898                 bcnt = pvr2_std_id_to_str(buf,sizeof(buf),std2);
1899                 pvr2_trace(PVR2_TRACE_STD,
1900                            "Expanding supported video standards"
1901                            " to include: %.*s",
1902                            bcnt,buf);
1903                 hdw->std_mask_avail |= std2;
1904         }
1905
1906         hdw->std_info_cur.def.type_bitmask.valid_bits = hdw->std_mask_avail;
1907
1908         if (std1) {
1909                 bcnt = pvr2_std_id_to_str(buf,sizeof(buf),std1);
1910                 pvr2_trace(PVR2_TRACE_STD,
1911                            "Initial video standard forced to %.*s",
1912                            bcnt,buf);
1913                 hdw->std_mask_cur = std1;
1914                 hdw->std_dirty = !0;
1915                 return;
1916         }
1917         if (std3) {
1918                 bcnt = pvr2_std_id_to_str(buf,sizeof(buf),std3);
1919                 pvr2_trace(PVR2_TRACE_STD,
1920                            "Initial video standard"
1921                            " (determined by device type): %.*s",bcnt,buf);
1922                 hdw->std_mask_cur = std3;
1923                 hdw->std_dirty = !0;
1924                 return;
1925         }
1926
1927         {
1928                 unsigned int idx;
1929                 for (idx = 0; idx < ARRAY_SIZE(std_eeprom_maps); idx++) {
1930                         if (std_eeprom_maps[idx].msk ?
1931                             ((std_eeprom_maps[idx].pat ^
1932                              hdw->std_mask_eeprom) &
1933                              std_eeprom_maps[idx].msk) :
1934                             (std_eeprom_maps[idx].pat !=
1935                              hdw->std_mask_eeprom)) continue;
1936                         bcnt = pvr2_std_id_to_str(buf,sizeof(buf),
1937                                                   std_eeprom_maps[idx].std);
1938                         pvr2_trace(PVR2_TRACE_STD,
1939                                    "Initial video standard guessed as %.*s",
1940                                    bcnt,buf);
1941                         hdw->std_mask_cur = std_eeprom_maps[idx].std;
1942                         hdw->std_dirty = !0;
1943                         return;
1944                 }
1945         }
1946
1947 }
1948
1949
1950 static unsigned int pvr2_copy_i2c_addr_list(
1951         unsigned short *dst, const unsigned char *src,
1952         unsigned int dst_max)
1953 {
1954         unsigned int cnt = 0;
1955         if (!src) return 0;
1956         while (src[cnt] && (cnt + 1) < dst_max) {
1957                 dst[cnt] = src[cnt];
1958                 cnt++;
1959         }
1960         dst[cnt] = I2C_CLIENT_END;
1961         return cnt;
1962 }
1963
1964
1965 static void pvr2_hdw_cx25840_vbi_hack(struct pvr2_hdw *hdw)
1966 {
1967         /*
1968           Mike Isely <isely@pobox.com> 19-Nov-2006 - This bit of nuttiness
1969           for cx25840 causes that module to correctly set up its video
1970           scaling.  This is really a problem in the cx25840 module itself,
1971           but we work around it here.  The problem has not been seen in
1972           ivtv because there VBI is supported and set up.  We don't do VBI
1973           here (at least not yet) and thus we never attempted to even set
1974           it up.
1975         */
1976         struct v4l2_format fmt;
1977         if (hdw->decoder_client_id != PVR2_CLIENT_ID_CX25840) {
1978                 /* We're not using a cx25840 so don't enable the hack */
1979                 return;
1980         }
1981
1982         pvr2_trace(PVR2_TRACE_INIT,
1983                    "Module ID %u:"
1984                    " Executing cx25840 VBI hack",
1985                    hdw->decoder_client_id);
1986         memset(&fmt, 0, sizeof(fmt));
1987         fmt.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
1988         fmt.fmt.sliced.service_lines[0][21] = V4L2_SLICED_CAPTION_525;
1989         fmt.fmt.sliced.service_lines[1][21] = V4L2_SLICED_CAPTION_525;
1990         v4l2_device_call_all(&hdw->v4l2_dev, hdw->decoder_client_id,
1991                              vbi, s_sliced_fmt, &fmt.fmt.sliced);
1992 }
1993
1994
1995 static int pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
1996                                 const struct pvr2_device_client_desc *cd)
1997 {
1998         const char *fname;
1999         unsigned char mid;
2000         struct v4l2_subdev *sd;
2001         unsigned int i2ccnt;
2002         const unsigned char *p;
2003         /* Arbitrary count - max # i2c addresses we will probe */
2004         unsigned short i2caddr[25];
2005
2006         mid = cd->module_id;
2007         fname = (mid < ARRAY_SIZE(module_names)) ? module_names[mid] : NULL;
2008         if (!fname) {
2009                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
2010                            "Module ID %u for device %s has no name?"
2011                            "  The driver might have a configuration problem.",
2012                            mid,
2013                            hdw->hdw_desc->description);
2014                 return -EINVAL;
2015         }
2016         pvr2_trace(PVR2_TRACE_INIT,
2017                    "Module ID %u (%s) for device %s being loaded...",
2018                    mid, fname,
2019                    hdw->hdw_desc->description);
2020
2021         i2ccnt = pvr2_copy_i2c_addr_list(i2caddr, cd->i2c_address_list,
2022                                          ARRAY_SIZE(i2caddr));
2023         if (!i2ccnt && ((p = (mid < ARRAY_SIZE(module_i2c_addresses)) ?
2024                          module_i2c_addresses[mid] : NULL) != NULL)) {
2025                 /* Second chance: Try default i2c address list */
2026                 i2ccnt = pvr2_copy_i2c_addr_list(i2caddr, p,
2027                                                  ARRAY_SIZE(i2caddr));
2028                 if (i2ccnt) {
2029                         pvr2_trace(PVR2_TRACE_INIT,
2030                                    "Module ID %u:"
2031                                    " Using default i2c address list",
2032                                    mid);
2033                 }
2034         }
2035
2036         if (!i2ccnt) {
2037                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
2038                            "Module ID %u (%s) for device %s:"
2039                            " No i2c addresses."
2040                            "  The driver might have a configuration problem.",
2041                            mid, fname, hdw->hdw_desc->description);
2042                 return -EINVAL;
2043         }
2044
2045         if (i2ccnt == 1) {
2046                 pvr2_trace(PVR2_TRACE_INIT,
2047                            "Module ID %u:"
2048                            " Setting up with specified i2c address 0x%x",
2049                            mid, i2caddr[0]);
2050                 sd = v4l2_i2c_new_subdev(&hdw->v4l2_dev, &hdw->i2c_adap,
2051                                          fname, i2caddr[0], NULL);
2052         } else {
2053                 pvr2_trace(PVR2_TRACE_INIT,
2054                            "Module ID %u:"
2055                            " Setting up with address probe list",
2056                            mid);
2057                 sd = v4l2_i2c_new_subdev(&hdw->v4l2_dev, &hdw->i2c_adap,
2058                                          fname, 0, i2caddr);
2059         }
2060
2061         if (!sd) {
2062                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
2063                            "Module ID %u (%s) for device %s failed to load."
2064                            "  Possible missing sub-device kernel module or"
2065                            " initialization failure within module.",
2066                            mid, fname, hdw->hdw_desc->description);
2067                 return -EIO;
2068         }
2069
2070         /* Tag this sub-device instance with the module ID we know about.
2071            In other places we'll use that tag to determine if the instance
2072            requires special handling. */
2073         sd->grp_id = mid;
2074
2075         pvr2_trace(PVR2_TRACE_INFO, "Attached sub-driver %s", fname);
2076
2077
2078         /* client-specific setup... */
2079         switch (mid) {
2080         case PVR2_CLIENT_ID_CX25840:
2081         case PVR2_CLIENT_ID_SAA7115:
2082                 hdw->decoder_client_id = mid;
2083                 break;
2084         default: break;
2085         }
2086
2087         return 0;
2088 }
2089
2090
2091 static void pvr2_hdw_load_modules(struct pvr2_hdw *hdw)
2092 {
2093         unsigned int idx;
2094         const struct pvr2_string_table *cm;
2095         const struct pvr2_device_client_table *ct;
2096         int okFl = !0;
2097
2098         cm = &hdw->hdw_desc->client_modules;
2099         for (idx = 0; idx < cm->cnt; idx++) {
2100                 request_module(cm->lst[idx]);
2101         }
2102
2103         ct = &hdw->hdw_desc->client_table;
2104         for (idx = 0; idx < ct->cnt; idx++) {
2105                 if (pvr2_hdw_load_subdev(hdw, &ct->lst[idx]) < 0) okFl = 0;
2106         }
2107         if (!okFl) {
2108                 hdw->flag_modulefail = !0;
2109                 pvr2_hdw_render_useless(hdw);
2110         }
2111 }
2112
2113
2114 static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw)
2115 {
2116         int ret;
2117         unsigned int idx;
2118         struct pvr2_ctrl *cptr;
2119         int reloadFl = 0;
2120         if (hdw->hdw_desc->fx2_firmware.cnt) {
2121                 if (!reloadFl) {
2122                         reloadFl =
2123                                 (hdw->usb_intf->cur_altsetting->desc.bNumEndpoints
2124                                  == 0);
2125                         if (reloadFl) {
2126                                 pvr2_trace(PVR2_TRACE_INIT,
2127                                            "USB endpoint config looks strange"
2128                                            "; possibly firmware needs to be"
2129                                            " loaded");
2130                         }
2131                 }
2132                 if (!reloadFl) {
2133                         reloadFl = !pvr2_hdw_check_firmware(hdw);
2134                         if (reloadFl) {
2135                                 pvr2_trace(PVR2_TRACE_INIT,
2136                                            "Check for FX2 firmware failed"
2137                                            "; possibly firmware needs to be"
2138                                            " loaded");
2139                         }
2140                 }
2141                 if (reloadFl) {
2142                         if (pvr2_upload_firmware1(hdw) != 0) {
2143                                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
2144                                            "Failure uploading firmware1");
2145                         }
2146                         return;
2147                 }
2148         }
2149         hdw->fw1_state = FW1_STATE_OK;
2150
2151         if (!pvr2_hdw_dev_ok(hdw)) return;
2152
2153         hdw->force_dirty = !0;
2154
2155         if (!hdw->hdw_desc->flag_no_powerup) {
2156                 pvr2_hdw_cmd_powerup(hdw);
2157                 if (!pvr2_hdw_dev_ok(hdw)) return;
2158         }
2159
2160         /* Take the IR chip out of reset, if appropriate */
2161         if (hdw->ir_scheme_active == PVR2_IR_SCHEME_ZILOG) {
2162                 pvr2_issue_simple_cmd(hdw,
2163                                       FX2CMD_HCW_ZILOG_RESET |
2164                                       (1 << 8) |
2165                                       ((0) << 16));
2166         }
2167
2168         // This step MUST happen after the earlier powerup step.
2169         pvr2_i2c_core_init(hdw);
2170         if (!pvr2_hdw_dev_ok(hdw)) return;
2171
2172         pvr2_hdw_load_modules(hdw);
2173         if (!pvr2_hdw_dev_ok(hdw)) return;
2174
2175         v4l2_device_call_all(&hdw->v4l2_dev, 0, core, load_fw);
2176
2177         for (idx = 0; idx < CTRLDEF_COUNT; idx++) {
2178                 cptr = hdw->controls + idx;
2179                 if (cptr->info->skip_init) continue;
2180                 if (!cptr->info->set_value) continue;
2181                 cptr->info->set_value(cptr,~0,cptr->info->default_value);
2182         }
2183
2184         pvr2_hdw_cx25840_vbi_hack(hdw);
2185
2186         /* Set up special default values for the television and radio
2187            frequencies here.  It's not really important what these defaults
2188            are, but I set them to something usable in the Chicago area just
2189            to make driver testing a little easier. */
2190
2191         hdw->freqValTelevision = default_tv_freq;
2192         hdw->freqValRadio = default_radio_freq;
2193
2194         // Do not use pvr2_reset_ctl_endpoints() here.  It is not
2195         // thread-safe against the normal pvr2_send_request() mechanism.
2196         // (We should make it thread safe).
2197
2198         if (hdw->hdw_desc->flag_has_hauppauge_rom) {
2199                 ret = pvr2_hdw_get_eeprom_addr(hdw);
2200                 if (!pvr2_hdw_dev_ok(hdw)) return;
2201                 if (ret < 0) {
2202                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
2203                                    "Unable to determine location of eeprom,"
2204                                    " skipping");
2205                 } else {
2206                         hdw->eeprom_addr = ret;
2207                         pvr2_eeprom_analyze(hdw);
2208                         if (!pvr2_hdw_dev_ok(hdw)) return;
2209                 }
2210         } else {
2211                 hdw->tuner_type = hdw->hdw_desc->default_tuner_type;
2212                 hdw->tuner_updated = !0;
2213                 hdw->std_mask_eeprom = V4L2_STD_ALL;
2214         }
2215
2216         if (hdw->serial_number) {
2217                 idx = scnprintf(hdw->identifier, sizeof(hdw->identifier) - 1,
2218                                 "sn-%lu", hdw->serial_number);
2219         } else if (hdw->unit_number >= 0) {
2220                 idx = scnprintf(hdw->identifier, sizeof(hdw->identifier) - 1,
2221                                 "unit-%c",
2222                                 hdw->unit_number + 'a');
2223         } else {
2224                 idx = scnprintf(hdw->identifier, sizeof(hdw->identifier) - 1,
2225                                 "unit-??");
2226         }
2227         hdw->identifier[idx] = 0;
2228
2229         pvr2_hdw_setup_std(hdw);
2230
2231         if (!get_default_tuner_type(hdw)) {
2232                 pvr2_trace(PVR2_TRACE_INIT,
2233                            "pvr2_hdw_setup: Tuner type overridden to %d",
2234                            hdw->tuner_type);
2235         }
2236
2237
2238         if (!pvr2_hdw_dev_ok(hdw)) return;
2239
2240         if (hdw->hdw_desc->signal_routing_scheme ==
2241             PVR2_ROUTING_SCHEME_GOTVIEW) {
2242                 /* Ensure that GPIO 11 is set to output for GOTVIEW
2243                    hardware. */
2244                 pvr2_hdw_gpio_chg_dir(hdw,(1 << 11),~0);
2245         }
2246
2247         pvr2_hdw_commit_setup(hdw);
2248
2249         hdw->vid_stream = pvr2_stream_create();
2250         if (!pvr2_hdw_dev_ok(hdw)) return;
2251         pvr2_trace(PVR2_TRACE_INIT,
2252                    "pvr2_hdw_setup: video stream is %p",hdw->vid_stream);
2253         if (hdw->vid_stream) {
2254                 idx = get_default_error_tolerance(hdw);
2255                 if (idx) {
2256                         pvr2_trace(PVR2_TRACE_INIT,
2257                                    "pvr2_hdw_setup: video stream %p"
2258                                    " setting tolerance %u",
2259                                    hdw->vid_stream,idx);
2260                 }
2261                 pvr2_stream_setup(hdw->vid_stream,hdw->usb_dev,
2262                                   PVR2_VID_ENDPOINT,idx);
2263         }
2264
2265         if (!pvr2_hdw_dev_ok(hdw)) return;
2266
2267         hdw->flag_init_ok = !0;
2268
2269         pvr2_hdw_state_sched(hdw);
2270 }
2271
2272
2273 /* Set up the structure and attempt to put the device into a usable state.
2274    This can be a time-consuming operation, which is why it is not done
2275    internally as part of the create() step. */
2276 static void pvr2_hdw_setup(struct pvr2_hdw *hdw)
2277 {
2278         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_setup(hdw=%p) begin",hdw);
2279         do {
2280                 pvr2_hdw_setup_low(hdw);
2281                 pvr2_trace(PVR2_TRACE_INIT,
2282                            "pvr2_hdw_setup(hdw=%p) done, ok=%d init_ok=%d",
2283                            hdw,pvr2_hdw_dev_ok(hdw),hdw->flag_init_ok);
2284                 if (pvr2_hdw_dev_ok(hdw)) {
2285                         if (hdw->flag_init_ok) {
2286                                 pvr2_trace(
2287                                         PVR2_TRACE_INFO,
2288                                         "Device initialization"
2289                                         " completed successfully.");
2290                                 break;
2291                         }
2292                         if (hdw->fw1_state == FW1_STATE_RELOAD) {
2293                                 pvr2_trace(
2294                                         PVR2_TRACE_INFO,
2295                                         "Device microcontroller firmware"
2296                                         " (re)loaded; it should now reset"
2297                                         " and reconnect.");
2298                                 break;
2299                         }
2300                         pvr2_trace(
2301                                 PVR2_TRACE_ERROR_LEGS,
2302                                 "Device initialization was not successful.");
2303                         if (hdw->fw1_state == FW1_STATE_MISSING) {
2304                                 pvr2_trace(
2305                                         PVR2_TRACE_ERROR_LEGS,
2306                                         "Giving up since device"
2307                                         " microcontroller firmware"
2308                                         " appears to be missing.");
2309                                 break;
2310                         }
2311                 }
2312                 if (hdw->flag_modulefail) {
2313                         pvr2_trace(
2314                                 PVR2_TRACE_ERROR_LEGS,
2315                                 "***WARNING*** pvrusb2 driver initialization"
2316                                 " failed due to the failure of one or more"
2317                                 " sub-device kernel modules.");
2318                         pvr2_trace(
2319                                 PVR2_TRACE_ERROR_LEGS,
2320                                 "You need to resolve the failing condition"
2321                                 " before this driver can function.  There"
2322                                 " should be some earlier messages giving more"
2323                                 " information about the problem.");
2324                         break;
2325                 }
2326                 if (procreload) {
2327                         pvr2_trace(
2328                                 PVR2_TRACE_ERROR_LEGS,
2329                                 "Attempting pvrusb2 recovery by reloading"
2330                                 " primary firmware.");
2331                         pvr2_trace(
2332                                 PVR2_TRACE_ERROR_LEGS,
2333                                 "If this works, device should disconnect"
2334                                 " and reconnect in a sane state.");
2335                         hdw->fw1_state = FW1_STATE_UNKNOWN;
2336                         pvr2_upload_firmware1(hdw);
2337                 } else {
2338                         pvr2_trace(
2339                                 PVR2_TRACE_ERROR_LEGS,
2340                                 "***WARNING*** pvrusb2 device hardware"
2341                                 " appears to be jammed"
2342                                 " and I can't clear it.");
2343                         pvr2_trace(
2344                                 PVR2_TRACE_ERROR_LEGS,
2345                                 "You might need to power cycle"
2346                                 " the pvrusb2 device"
2347                                 " in order to recover.");
2348                 }
2349         } while (0);
2350         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_setup(hdw=%p) end",hdw);
2351 }
2352
2353
2354 /* Perform second stage initialization.  Set callback pointer first so that
2355    we can avoid a possible initialization race (if the kernel thread runs
2356    before the callback has been set). */
2357 int pvr2_hdw_initialize(struct pvr2_hdw *hdw,
2358                         void (*callback_func)(void *),
2359                         void *callback_data)
2360 {
2361         LOCK_TAKE(hdw->big_lock); do {
2362                 if (hdw->flag_disconnected) {
2363                         /* Handle a race here: If we're already
2364                            disconnected by this point, then give up.  If we
2365                            get past this then we'll remain connected for
2366                            the duration of initialization since the entire
2367                            initialization sequence is now protected by the
2368                            big_lock. */
2369                         break;
2370                 }
2371                 hdw->state_data = callback_data;
2372                 hdw->state_func = callback_func;
2373                 pvr2_hdw_setup(hdw);
2374         } while (0); LOCK_GIVE(hdw->big_lock);
2375         return hdw->flag_init_ok;
2376 }
2377
2378
2379 /* Create, set up, and return a structure for interacting with the
2380    underlying hardware.  */
2381 struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
2382                                  const struct usb_device_id *devid)
2383 {
2384         unsigned int idx,cnt1,cnt2,m;
2385         struct pvr2_hdw *hdw = NULL;
2386         int valid_std_mask;
2387         struct pvr2_ctrl *cptr;
2388         struct usb_device *usb_dev;
2389         const struct pvr2_device_desc *hdw_desc;
2390         __u8 ifnum;
2391         struct v4l2_queryctrl qctrl;
2392         struct pvr2_ctl_info *ciptr;
2393
2394         usb_dev = interface_to_usbdev(intf);
2395
2396         hdw_desc = (const struct pvr2_device_desc *)(devid->driver_info);
2397
2398         if (hdw_desc == NULL) {
2399                 pvr2_trace(PVR2_TRACE_INIT, "pvr2_hdw_create:"
2400                            " No device description pointer,"
2401                            " unable to continue.");
2402                 pvr2_trace(PVR2_TRACE_INIT, "If you have a new device type,"
2403                            " please contact Mike Isely <isely@pobox.com>"
2404                            " to get it included in the driver\n");
2405                 goto fail;
2406         }
2407
2408         hdw = kzalloc(sizeof(*hdw),GFP_KERNEL);
2409         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_create: hdw=%p, type \"%s\"",
2410                    hdw,hdw_desc->description);
2411         pvr2_trace(PVR2_TRACE_INFO, "Hardware description: %s",
2412                 hdw_desc->description);
2413         if (hdw_desc->flag_is_experimental) {
2414                 pvr2_trace(PVR2_TRACE_INFO, "**********");
2415                 pvr2_trace(PVR2_TRACE_INFO,
2416                            "WARNING: Support for this device (%s) is"
2417                            " experimental.", hdw_desc->description);
2418                 pvr2_trace(PVR2_TRACE_INFO,
2419                            "Important functionality might not be"
2420                            " entirely working.");
2421                 pvr2_trace(PVR2_TRACE_INFO,
2422                            "Please consider contacting the driver author to"
2423                            " help with further stabilization of the driver.");
2424                 pvr2_trace(PVR2_TRACE_INFO, "**********");
2425         }
2426         if (!hdw) goto fail;
2427
2428         setup_timer(&hdw->quiescent_timer, pvr2_hdw_quiescent_timeout,
2429                     (unsigned long)hdw);
2430
2431         setup_timer(&hdw->decoder_stabilization_timer,
2432                     pvr2_hdw_decoder_stabilization_timeout,
2433                     (unsigned long)hdw);
2434
2435         setup_timer(&hdw->encoder_wait_timer, pvr2_hdw_encoder_wait_timeout,
2436                     (unsigned long)hdw);
2437
2438         setup_timer(&hdw->encoder_run_timer, pvr2_hdw_encoder_run_timeout,
2439                     (unsigned long)hdw);
2440
2441         hdw->master_state = PVR2_STATE_DEAD;
2442
2443         init_waitqueue_head(&hdw->state_wait_data);
2444
2445         hdw->tuner_signal_stale = !0;
2446         cx2341x_fill_defaults(&hdw->enc_ctl_state);
2447
2448         /* Calculate which inputs are OK */
2449         m = 0;
2450         if (hdw_desc->flag_has_analogtuner) m |= 1 << PVR2_CVAL_INPUT_TV;
2451         if (hdw_desc->digital_control_scheme != PVR2_DIGITAL_SCHEME_NONE) {
2452                 m |= 1 << PVR2_CVAL_INPUT_DTV;
2453         }
2454         if (hdw_desc->flag_has_svideo) m |= 1 << PVR2_CVAL_INPUT_SVIDEO;
2455         if (hdw_desc->flag_has_composite) m |= 1 << PVR2_CVAL_INPUT_COMPOSITE;
2456         if (hdw_desc->flag_has_fmradio) m |= 1 << PVR2_CVAL_INPUT_RADIO;
2457         hdw->input_avail_mask = m;
2458         hdw->input_allowed_mask = hdw->input_avail_mask;
2459
2460         /* If not a hybrid device, pathway_state never changes.  So
2461            initialize it here to what it should forever be. */
2462         if (!(hdw->input_avail_mask & (1 << PVR2_CVAL_INPUT_DTV))) {
2463                 hdw->pathway_state = PVR2_PATHWAY_ANALOG;
2464         } else if (!(hdw->input_avail_mask & (1 << PVR2_CVAL_INPUT_TV))) {
2465                 hdw->pathway_state = PVR2_PATHWAY_DIGITAL;
2466         }
2467
2468         hdw->control_cnt = CTRLDEF_COUNT;
2469         hdw->control_cnt += MPEGDEF_COUNT;
2470         hdw->controls = kzalloc(sizeof(struct pvr2_ctrl) * hdw->control_cnt,
2471                                 GFP_KERNEL);
2472         if (!hdw->controls) goto fail;
2473         hdw->hdw_desc = hdw_desc;
2474         hdw->ir_scheme_active = hdw->hdw_desc->ir_scheme;
2475         for (idx = 0; idx < hdw->control_cnt; idx++) {
2476                 cptr = hdw->controls + idx;
2477                 cptr->hdw = hdw;
2478         }
2479         for (idx = 0; idx < 32; idx++) {
2480                 hdw->std_mask_ptrs[idx] = hdw->std_mask_names[idx];
2481         }
2482         for (idx = 0; idx < CTRLDEF_COUNT; idx++) {
2483                 cptr = hdw->controls + idx;
2484                 cptr->info = control_defs+idx;
2485         }
2486
2487         /* Ensure that default input choice is a valid one. */
2488         m = hdw->input_avail_mask;
2489         if (m) for (idx = 0; idx < (sizeof(m) << 3); idx++) {
2490                 if (!((1 << idx) & m)) continue;
2491                 hdw->input_val = idx;
2492                 break;
2493         }
2494
2495         /* Define and configure additional controls from cx2341x module. */
2496         hdw->mpeg_ctrl_info = kcalloc(MPEGDEF_COUNT,
2497                                       sizeof(*(hdw->mpeg_ctrl_info)),
2498                                       GFP_KERNEL);
2499         if (!hdw->mpeg_ctrl_info) goto fail;
2500         for (idx = 0; idx < MPEGDEF_COUNT; idx++) {
2501                 cptr = hdw->controls + idx + CTRLDEF_COUNT;
2502                 ciptr = &(hdw->mpeg_ctrl_info[idx].info);
2503                 ciptr->desc = hdw->mpeg_ctrl_info[idx].desc;
2504                 ciptr->name = mpeg_ids[idx].strid;
2505                 ciptr->v4l_id = mpeg_ids[idx].id;
2506                 ciptr->skip_init = !0;
2507                 ciptr->get_value = ctrl_cx2341x_get;
2508                 ciptr->get_v4lflags = ctrl_cx2341x_getv4lflags;
2509                 ciptr->is_dirty = ctrl_cx2341x_is_dirty;
2510                 if (!idx) ciptr->clear_dirty = ctrl_cx2341x_clear_dirty;
2511                 qctrl.id = ciptr->v4l_id;
2512                 cx2341x_ctrl_query(&hdw->enc_ctl_state,&qctrl);
2513                 if (!(qctrl.flags & V4L2_CTRL_FLAG_READ_ONLY)) {
2514                         ciptr->set_value = ctrl_cx2341x_set;
2515                 }
2516                 strncpy(hdw->mpeg_ctrl_info[idx].desc,qctrl.name,
2517                         PVR2_CTLD_INFO_DESC_SIZE);
2518                 hdw->mpeg_ctrl_info[idx].desc[PVR2_CTLD_INFO_DESC_SIZE-1] = 0;
2519                 ciptr->default_value = qctrl.default_value;
2520                 switch (qctrl.type) {
2521                 default:
2522                 case V4L2_CTRL_TYPE_INTEGER:
2523                         ciptr->type = pvr2_ctl_int;
2524                         ciptr->def.type_int.min_value = qctrl.minimum;
2525                         ciptr->def.type_int.max_value = qctrl.maximum;
2526                         break;
2527                 case V4L2_CTRL_TYPE_BOOLEAN:
2528                         ciptr->type = pvr2_ctl_bool;
2529                         break;
2530                 case V4L2_CTRL_TYPE_MENU:
2531                         ciptr->type = pvr2_ctl_enum;
2532                         ciptr->def.type_enum.value_names =
2533                                 cx2341x_ctrl_get_menu(&hdw->enc_ctl_state,
2534                                                                 ciptr->v4l_id);
2535                         for (cnt1 = 0;
2536                              ciptr->def.type_enum.value_names[cnt1] != NULL;
2537                              cnt1++) { }
2538                         ciptr->def.type_enum.count = cnt1;
2539                         break;
2540                 }
2541                 cptr->info = ciptr;
2542         }
2543
2544         // Initialize control data regarding video standard masks
2545         valid_std_mask = pvr2_std_get_usable();
2546         for (idx = 0; idx < 32; idx++) {
2547                 if (!(valid_std_mask & (1 << idx))) continue;
2548                 cnt1 = pvr2_std_id_to_str(
2549                         hdw->std_mask_names[idx],
2550                         sizeof(hdw->std_mask_names[idx])-1,
2551                         1 << idx);
2552                 hdw->std_mask_names[idx][cnt1] = 0;
2553         }
2554         cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDAVAIL);
2555         if (cptr) {
2556                 memcpy(&hdw->std_info_avail,cptr->info,
2557                        sizeof(hdw->std_info_avail));
2558                 cptr->info = &hdw->std_info_avail;
2559                 hdw->std_info_avail.def.type_bitmask.bit_names =
2560                         hdw->std_mask_ptrs;
2561                 hdw->std_info_avail.def.type_bitmask.valid_bits =
2562                         valid_std_mask;
2563         }
2564         cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR);
2565         if (cptr) {
2566                 memcpy(&hdw->std_info_cur,cptr->info,
2567                        sizeof(hdw->std_info_cur));
2568                 cptr->info = &hdw->std_info_cur;
2569                 hdw->std_info_cur.def.type_bitmask.bit_names =
2570                         hdw->std_mask_ptrs;
2571                 hdw->std_info_cur.def.type_bitmask.valid_bits =
2572                         valid_std_mask;
2573         }
2574         cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDDETECT);
2575         if (cptr) {
2576                 memcpy(&hdw->std_info_detect,cptr->info,
2577                        sizeof(hdw->std_info_detect));
2578                 cptr->info = &hdw->std_info_detect;
2579                 hdw->std_info_detect.def.type_bitmask.bit_names =
2580                         hdw->std_mask_ptrs;
2581                 hdw->std_info_detect.def.type_bitmask.valid_bits =
2582                         valid_std_mask;
2583         }
2584
2585         hdw->cropcap_stale = !0;
2586         hdw->eeprom_addr = -1;
2587         hdw->unit_number = -1;
2588         hdw->v4l_minor_number_video = -1;
2589         hdw->v4l_minor_number_vbi = -1;
2590         hdw->v4l_minor_number_radio = -1;
2591         hdw->ctl_write_buffer = kmalloc(PVR2_CTL_BUFFSIZE,GFP_KERNEL);
2592         if (!hdw->ctl_write_buffer) goto fail;
2593         hdw->ctl_read_buffer = kmalloc(PVR2_CTL_BUFFSIZE,GFP_KERNEL);
2594         if (!hdw->ctl_read_buffer) goto fail;
2595         hdw->ctl_write_urb = usb_alloc_urb(0,GFP_KERNEL);
2596         if (!hdw->ctl_write_urb) goto fail;
2597         hdw->ctl_read_urb = usb_alloc_urb(0,GFP_KERNEL);
2598         if (!hdw->ctl_read_urb) goto fail;
2599
2600         if (v4l2_device_register(&intf->dev, &hdw->v4l2_dev) != 0) {
2601                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
2602                            "Error registering with v4l core, giving up");
2603                 goto fail;
2604         }
2605         mutex_lock(&pvr2_unit_mtx);
2606         do {
2607                 for (idx = 0; idx < PVR_NUM; idx++) {
2608                         if (unit_pointers[idx]) continue;
2609                         hdw->unit_number = idx;
2610                         unit_pointers[idx] = hdw;
2611                         break;
2612                 }
2613         } while (0);
2614         mutex_unlock(&pvr2_unit_mtx);
2615
2616         cnt1 = 0;
2617         cnt2 = scnprintf(hdw->name+cnt1,sizeof(hdw->name)-cnt1,"pvrusb2");
2618         cnt1 += cnt2;
2619         if (hdw->unit_number >= 0) {
2620                 cnt2 = scnprintf(hdw->name+cnt1,sizeof(hdw->name)-cnt1,"_%c",
2621                                  ('a' + hdw->unit_number));
2622                 cnt1 += cnt2;
2623         }
2624         if (cnt1 >= sizeof(hdw->name)) cnt1 = sizeof(hdw->name)-1;
2625         hdw->name[cnt1] = 0;
2626
2627         hdw->workqueue = create_singlethread_workqueue(hdw->name);
2628         INIT_WORK(&hdw->workpoll,pvr2_hdw_worker_poll);
2629
2630         pvr2_trace(PVR2_TRACE_INIT,"Driver unit number is %d, name is %s",
2631                    hdw->unit_number,hdw->name);
2632
2633         hdw->tuner_type = -1;
2634         hdw->flag_ok = !0;
2635
2636         hdw->usb_intf = intf;
2637         hdw->usb_dev = usb_dev;
2638
2639         usb_make_path(hdw->usb_dev, hdw->bus_info, sizeof(hdw->bus_info));
2640
2641         ifnum = hdw->usb_intf->cur_altsetting->desc.bInterfaceNumber;
2642         usb_set_interface(hdw->usb_dev,ifnum,0);
2643
2644         mutex_init(&hdw->ctl_lock_mutex);
2645         mutex_init(&hdw->big_lock_mutex);
2646
2647         return hdw;
2648  fail:
2649         if (hdw) {
2650                 del_timer_sync(&hdw->quiescent_timer);
2651                 del_timer_sync(&hdw->decoder_stabilization_timer);
2652                 del_timer_sync(&hdw->encoder_run_timer);
2653                 del_timer_sync(&hdw->encoder_wait_timer);
2654                 if (hdw->workqueue) {
2655                         flush_workqueue(hdw->workqueue);
2656                         destroy_workqueue(hdw->workqueue);
2657                         hdw->workqueue = NULL;
2658                 }
2659                 usb_free_urb(hdw->ctl_read_urb);
2660                 usb_free_urb(hdw->ctl_write_urb);
2661                 kfree(hdw->ctl_read_buffer);
2662                 kfree(hdw->ctl_write_buffer);
2663                 kfree(hdw->controls);
2664                 kfree(hdw->mpeg_ctrl_info);
2665                 kfree(hdw);
2666         }
2667         return NULL;
2668 }
2669
2670
2671 /* Remove _all_ associations between this driver and the underlying USB
2672    layer. */
2673 static void pvr2_hdw_remove_usb_stuff(struct pvr2_hdw *hdw)
2674 {
2675         if (hdw->flag_disconnected) return;
2676         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_remove_usb_stuff: hdw=%p",hdw);
2677         if (hdw->ctl_read_urb) {
2678                 usb_kill_urb(hdw->ctl_read_urb);
2679                 usb_free_urb(hdw->ctl_read_urb);
2680                 hdw->ctl_read_urb = NULL;
2681         }
2682         if (hdw->ctl_write_urb) {
2683                 usb_kill_urb(hdw->ctl_write_urb);
2684                 usb_free_urb(hdw->ctl_write_urb);
2685                 hdw->ctl_write_urb = NULL;
2686         }
2687         if (hdw->ctl_read_buffer) {
2688                 kfree(hdw->ctl_read_buffer);
2689                 hdw->ctl_read_buffer = NULL;
2690         }
2691         if (hdw->ctl_write_buffer) {
2692                 kfree(hdw->ctl_write_buffer);
2693                 hdw->ctl_write_buffer = NULL;
2694         }
2695         hdw->flag_disconnected = !0;
2696         /* If we don't do this, then there will be a dangling struct device
2697            reference to our disappearing device persisting inside the V4L
2698            core... */
2699         v4l2_device_disconnect(&hdw->v4l2_dev);
2700         hdw->usb_dev = NULL;
2701         hdw->usb_intf = NULL;
2702         pvr2_hdw_render_useless(hdw);
2703 }
2704
2705 void pvr2_hdw_set_v4l2_dev(struct pvr2_hdw *hdw, struct video_device *vdev)
2706 {
2707         vdev->v4l2_dev = &hdw->v4l2_dev;
2708 }
2709
2710 /* Destroy hardware interaction structure */
2711 void pvr2_hdw_destroy(struct pvr2_hdw *hdw)
2712 {
2713         if (!hdw) return;
2714         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_destroy: hdw=%p",hdw);
2715         if (hdw->workqueue) {
2716                 flush_workqueue(hdw->workqueue);
2717                 destroy_workqueue(hdw->workqueue);
2718                 hdw->workqueue = NULL;
2719         }
2720         del_timer_sync(&hdw->quiescent_timer);
2721         del_timer_sync(&hdw->decoder_stabilization_timer);
2722         del_timer_sync(&hdw->encoder_run_timer);
2723         del_timer_sync(&hdw->encoder_wait_timer);
2724         if (hdw->fw_buffer) {
2725                 kfree(hdw->fw_buffer);
2726                 hdw->fw_buffer = NULL;
2727         }
2728         if (hdw->vid_stream) {
2729                 pvr2_stream_destroy(hdw->vid_stream);
2730                 hdw->vid_stream = NULL;
2731         }
2732         pvr2_i2c_core_done(hdw);
2733         v4l2_device_unregister(&hdw->v4l2_dev);
2734         pvr2_hdw_remove_usb_stuff(hdw);
2735         mutex_lock(&pvr2_unit_mtx);
2736         do {
2737                 if ((hdw->unit_number >= 0) &&
2738                     (hdw->unit_number < PVR_NUM) &&
2739                     (unit_pointers[hdw->unit_number] == hdw)) {
2740                         unit_pointers[hdw->unit_number] = NULL;
2741                 }
2742         } while (0);
2743         mutex_unlock(&pvr2_unit_mtx);
2744         kfree(hdw->controls);
2745         kfree(hdw->mpeg_ctrl_info);
2746         kfree(hdw);
2747 }
2748
2749
2750 int pvr2_hdw_dev_ok(struct pvr2_hdw *hdw)
2751 {
2752         return (hdw && hdw->flag_ok);
2753 }
2754
2755
2756 /* Called when hardware has been unplugged */
2757 void pvr2_hdw_disconnect(struct pvr2_hdw *hdw)
2758 {
2759         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_disconnect(hdw=%p)",hdw);
2760         LOCK_TAKE(hdw->big_lock);
2761         LOCK_TAKE(hdw->ctl_lock);
2762         pvr2_hdw_remove_usb_stuff(hdw);
2763         LOCK_GIVE(hdw->ctl_lock);
2764         LOCK_GIVE(hdw->big_lock);
2765 }
2766
2767
2768 /* Get the number of defined controls */
2769 unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *hdw)
2770 {
2771         return hdw->control_cnt;
2772 }
2773
2774
2775 /* Retrieve a control handle given its index (0..count-1) */
2776 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *hdw,
2777                                              unsigned int idx)
2778 {
2779         if (idx >= hdw->control_cnt) return NULL;
2780         return hdw->controls + idx;
2781 }
2782
2783
2784 /* Retrieve a control handle given its index (0..count-1) */
2785 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *hdw,
2786                                           unsigned int ctl_id)
2787 {
2788         struct pvr2_ctrl *cptr;
2789         unsigned int idx;
2790         int i;
2791
2792         /* This could be made a lot more efficient, but for now... */
2793         for (idx = 0; idx < hdw->control_cnt; idx++) {
2794                 cptr = hdw->controls + idx;
2795                 i = cptr->info->internal_id;
2796                 if (i && (i == ctl_id)) return cptr;
2797         }
2798         return NULL;
2799 }
2800
2801
2802 /* Given a V4L ID, retrieve the control structure associated with it. */
2803 struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *hdw,unsigned int ctl_id)
2804 {
2805         struct pvr2_ctrl *cptr;
2806         unsigned int idx;
2807         int i;
2808
2809         /* This could be made a lot more efficient, but for now... */
2810         for (idx = 0; idx < hdw->control_cnt; idx++) {
2811                 cptr = hdw->controls + idx;
2812                 i = cptr->info->v4l_id;
2813                 if (i && (i == ctl_id)) return cptr;
2814         }
2815         return NULL;
2816 }
2817
2818
2819 /* Given a V4L ID for its immediate predecessor, retrieve the control
2820    structure associated with it. */
2821 struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *hdw,
2822                                             unsigned int ctl_id)
2823 {
2824         struct pvr2_ctrl *cptr,*cp2;
2825         unsigned int idx;
2826         int i;
2827
2828         /* This could be made a lot more efficient, but for now... */
2829         cp2 = NULL;
2830         for (idx = 0; idx < hdw->control_cnt; idx++) {
2831                 cptr = hdw->controls + idx;
2832                 i = cptr->info->v4l_id;
2833                 if (!i) continue;
2834                 if (i <= ctl_id) continue;
2835                 if (cp2 && (cp2->info->v4l_id < i)) continue;
2836                 cp2 = cptr;
2837         }
2838         return cp2;
2839         return NULL;
2840 }
2841
2842
2843 static const char *get_ctrl_typename(enum pvr2_ctl_type tp)
2844 {
2845         switch (tp) {
2846         case pvr2_ctl_int: return "integer";
2847         case pvr2_ctl_enum: return "enum";
2848         case pvr2_ctl_bool: return "boolean";
2849         case pvr2_ctl_bitmask: return "bitmask";
2850         }
2851         return "";
2852 }
2853
2854
2855 static void pvr2_subdev_set_control(struct pvr2_hdw *hdw, int id,
2856                                     const char *name, int val)
2857 {
2858         struct v4l2_control ctrl;
2859         pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 %s=%d", name, val);
2860         memset(&ctrl, 0, sizeof(ctrl));
2861         ctrl.id = id;
2862         ctrl.value = val;
2863         v4l2_device_call_all(&hdw->v4l2_dev, 0, core, s_ctrl, &ctrl);
2864 }
2865
2866 #define PVR2_SUBDEV_SET_CONTROL(hdw, id, lab) \
2867         if ((hdw)->lab##_dirty || (hdw)->force_dirty) {         \
2868                 pvr2_subdev_set_control(hdw, id, #lab, (hdw)->lab##_val); \
2869         }
2870
2871 static v4l2_std_id pvr2_hdw_get_detected_std(struct pvr2_hdw *hdw)
2872 {
2873         v4l2_std_id std;
2874         std = (v4l2_std_id)hdw->std_mask_avail;
2875         v4l2_device_call_all(&hdw->v4l2_dev, 0,
2876                              video, querystd, &std);
2877         return std;
2878 }
2879
2880 /* Execute whatever commands are required to update the state of all the
2881    sub-devices so that they match our current control values. */
2882 static void pvr2_subdev_update(struct pvr2_hdw *hdw)
2883 {
2884         struct v4l2_subdev *sd;
2885         unsigned int id;
2886         pvr2_subdev_update_func fp;
2887
2888         pvr2_trace(PVR2_TRACE_CHIPS, "subdev update...");
2889
2890         if (hdw->tuner_updated || hdw->force_dirty) {
2891                 struct tuner_setup setup;
2892                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev tuner set_type(%d)",
2893                            hdw->tuner_type);
2894                 if (((int)(hdw->tuner_type)) >= 0) {
2895                         memset(&setup, 0, sizeof(setup));
2896                         setup.addr = ADDR_UNSET;
2897                         setup.type = hdw->tuner_type;
2898                         setup.mode_mask = T_RADIO | T_ANALOG_TV;
2899                         v4l2_device_call_all(&hdw->v4l2_dev, 0,
2900                                              tuner, s_type_addr, &setup);
2901                 }
2902         }
2903
2904         if (hdw->input_dirty || hdw->std_dirty || hdw->force_dirty) {
2905                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_standard");
2906                 if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
2907                         v4l2_device_call_all(&hdw->v4l2_dev, 0,
2908                                              tuner, s_radio);
2909                 } else {
2910                         v4l2_std_id vs;
2911                         vs = hdw->std_mask_cur;
2912                         v4l2_device_call_all(&hdw->v4l2_dev, 0,
2913                                              video, s_std, vs);
2914                         pvr2_hdw_cx25840_vbi_hack(hdw);
2915                 }
2916                 hdw->tuner_signal_stale = !0;
2917                 hdw->cropcap_stale = !0;
2918         }
2919
2920         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_BRIGHTNESS, brightness);
2921         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_CONTRAST, contrast);
2922         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_SATURATION, saturation);
2923         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_HUE, hue);
2924         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_MUTE, mute);
2925         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_VOLUME, volume);
2926         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_BALANCE, balance);
2927         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_BASS, bass);
2928         PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_TREBLE, treble);
2929
2930         if (hdw->input_dirty || hdw->audiomode_dirty || hdw->force_dirty) {
2931                 struct v4l2_tuner vt;
2932                 memset(&vt, 0, sizeof(vt));
2933                 vt.type = (hdw->input_val == PVR2_CVAL_INPUT_RADIO) ?
2934                         V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2935                 vt.audmode = hdw->audiomode_val;
2936                 v4l2_device_call_all(&hdw->v4l2_dev, 0, tuner, s_tuner, &vt);
2937         }
2938
2939         if (hdw->freqDirty || hdw->force_dirty) {
2940                 unsigned long fv;
2941                 struct v4l2_frequency freq;
2942                 fv = pvr2_hdw_get_cur_freq(hdw);
2943                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_freq(%lu)", fv);
2944                 if (hdw->tuner_signal_stale) pvr2_hdw_status_poll(hdw);
2945                 memset(&freq, 0, sizeof(freq));
2946                 if (hdw->tuner_signal_info.capability & V4L2_TUNER_CAP_LOW) {
2947                         /* ((fv * 1000) / 62500) */
2948                         freq.frequency = (fv * 2) / 125;
2949                 } else {
2950                         freq.frequency = fv / 62500;
2951                 }
2952                 /* tuner-core currently doesn't seem to care about this, but
2953                    let's set it anyway for completeness. */
2954                 if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
2955                         freq.type = V4L2_TUNER_RADIO;
2956                 } else {
2957                         freq.type = V4L2_TUNER_ANALOG_TV;
2958                 }
2959                 freq.tuner = 0;
2960                 v4l2_device_call_all(&hdw->v4l2_dev, 0, tuner,
2961                                      s_frequency, &freq);
2962         }
2963
2964         if (hdw->res_hor_dirty || hdw->res_ver_dirty || hdw->force_dirty) {
2965                 struct v4l2_subdev_format format = {
2966                         .which = V4L2_SUBDEV_FORMAT_ACTIVE,
2967                 };
2968
2969                 format.format.width = hdw->res_hor_val;
2970                 format.format.height = hdw->res_ver_val;
2971                 format.format.code = MEDIA_BUS_FMT_FIXED;
2972                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_size(%dx%d)",
2973                            format.format.width, format.format.height);
2974                 v4l2_device_call_all(&hdw->v4l2_dev, 0, pad, set_fmt,
2975                                      NULL, &format);
2976         }
2977
2978         if (hdw->srate_dirty || hdw->force_dirty) {
2979                 u32 val;
2980                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_audio %d",
2981                            hdw->srate_val);
2982                 switch (hdw->srate_val) {
2983                 default:
2984                 case V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000:
2985                         val = 48000;
2986                         break;
2987                 case V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100:
2988                         val = 44100;
2989                         break;
2990                 case V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000:
2991                         val = 32000;
2992                         break;
2993                 }
2994                 v4l2_device_call_all(&hdw->v4l2_dev, 0,
2995                                      audio, s_clock_freq, val);
2996         }
2997
2998         /* Unable to set crop parameters; there is apparently no equivalent
2999            for VIDIOC_S_CROP */
3000
3001         v4l2_device_for_each_subdev(sd, &hdw->v4l2_dev) {
3002                 id = sd->grp_id;
3003                 if (id >= ARRAY_SIZE(pvr2_module_update_functions)) continue;
3004                 fp = pvr2_module_update_functions[id];
3005                 if (!fp) continue;
3006                 (*fp)(hdw, sd);
3007         }
3008
3009         if (hdw->tuner_signal_stale || hdw->cropcap_stale) {
3010                 pvr2_hdw_status_poll(hdw);
3011         }
3012 }
3013
3014
3015 /* Figure out if we need to commit control changes.  If so, mark internal
3016    state flags to indicate this fact and return true.  Otherwise do nothing
3017    else and return false. */
3018 static int pvr2_hdw_commit_setup(struct pvr2_hdw *hdw)
3019 {
3020         unsigned int idx;
3021         struct pvr2_ctrl *cptr;
3022         int value;
3023         int commit_flag = hdw->force_dirty;
3024         char buf[100];
3025         unsigned int bcnt,ccnt;
3026
3027         for (idx = 0; idx < hdw->control_cnt; idx++) {
3028                 cptr = hdw->controls + idx;
3029                 if (!cptr->info->is_dirty) continue;
3030                 if (!cptr->info->is_dirty(cptr)) continue;
3031                 commit_flag = !0;
3032
3033                 if (!(pvrusb2_debug & PVR2_TRACE_CTL)) continue;
3034                 bcnt = scnprintf(buf,sizeof(buf),"\"%s\" <-- ",
3035                                  cptr->info->name);
3036                 value = 0;
3037                 cptr->info->get_value(cptr,&value);
3038                 pvr2_ctrl_value_to_sym_internal(cptr,~0,value,
3039                                                 buf+bcnt,
3040                                                 sizeof(buf)-bcnt,&ccnt);
3041                 bcnt += ccnt;
3042                 bcnt += scnprintf(buf+bcnt,sizeof(buf)-bcnt," <%s>",
3043                                   get_ctrl_typename(cptr->info->type));
3044                 pvr2_trace(PVR2_TRACE_CTL,
3045                            "/*--TRACE_COMMIT--*/ %.*s",
3046                            bcnt,buf);
3047         }
3048
3049         if (!commit_flag) {
3050                 /* Nothing has changed */
3051                 return 0;
3052         }
3053
3054         hdw->state_pipeline_config = 0;
3055         trace_stbit("state_pipeline_config",hdw->state_pipeline_config);
3056         pvr2_hdw_state_sched(hdw);
3057
3058         return !0;
3059 }
3060
3061
3062 /* Perform all operations needed to commit all control changes.  This must
3063    be performed in synchronization with the pipeline state and is thus
3064    expected to be called as part of the driver's worker thread.  Return
3065    true if commit successful, otherwise return false to indicate that
3066    commit isn't possible at this time. */
3067 static int pvr2_hdw_commit_execute(struct pvr2_hdw *hdw)
3068 {
3069         unsigned int idx;
3070         struct pvr2_ctrl *cptr;
3071         int disruptive_change;
3072
3073         if (hdw->input_dirty && hdw->state_pathway_ok &&
3074             (((hdw->input_val == PVR2_CVAL_INPUT_DTV) ?
3075               PVR2_PATHWAY_DIGITAL : PVR2_PATHWAY_ANALOG) !=
3076              hdw->pathway_state)) {
3077                 /* Change of mode being asked for... */
3078                 hdw->state_pathway_ok = 0;
3079                 trace_stbit("state_pathway_ok", hdw->state_pathway_ok);
3080         }
3081         if (!hdw->state_pathway_ok) {
3082                 /* Can't commit anything until pathway is ok. */
3083                 return 0;
3084         }
3085
3086         /* Handle some required side effects when the video standard is
3087            changed.... */
3088         if (hdw->std_dirty) {
3089                 int nvres;
3090                 int gop_size;
3091                 if (hdw->std_mask_cur & V4L2_STD_525_60) {
3092                         nvres = 480;
3093                         gop_size = 15;
3094                 } else {
3095                         nvres = 576;
3096                         gop_size = 12;
3097                 }
3098                 /* Rewrite the vertical resolution to be appropriate to the
3099                    video standard that has been selected. */
3100                 if (nvres != hdw->res_ver_val) {
3101                         hdw->res_ver_val = nvres;
3102                         hdw->res_ver_dirty = !0;
3103                 }
3104                 /* Rewrite the GOP size to be appropriate to the video
3105                    standard that has been selected. */
3106                 if (gop_size != hdw->enc_ctl_state.video_gop_size) {
3107                         struct v4l2_ext_controls cs;
3108                         struct v4l2_ext_control c1;
3109                         memset(&cs, 0, sizeof(cs));
3110                         memset(&c1, 0, sizeof(c1));
3111                         cs.controls = &c1;
3112                         cs.count = 1;
3113                         c1.id = V4L2_CID_MPEG_VIDEO_GOP_SIZE;
3114                         c1.value = gop_size;
3115                         cx2341x_ext_ctrls(&hdw->enc_ctl_state, 0, &cs,
3116                                           VIDIOC_S_EXT_CTRLS);
3117                 }
3118         }
3119
3120         /* The broadcast decoder can only scale down, so if
3121          * res_*_dirty && crop window < output format ==> enlarge crop.
3122          *
3123          * The mpeg encoder receives fields of res_hor_val dots and
3124          * res_ver_val halflines.  Limits: hor<=720, ver<=576.
3125          */
3126         if (hdw->res_hor_dirty && hdw->cropw_val < hdw->res_hor_val) {
3127                 hdw->cropw_val = hdw->res_hor_val;
3128                 hdw->cropw_dirty = !0;
3129         } else if (hdw->cropw_dirty) {
3130                 hdw->res_hor_dirty = !0;           /* must rescale */
3131                 hdw->res_hor_val = min(720, hdw->cropw_val);
3132         }
3133         if (hdw->res_ver_dirty && hdw->croph_val < hdw->res_ver_val) {
3134                 hdw->croph_val = hdw->res_ver_val;
3135                 hdw->croph_dirty = !0;
3136         } else if (hdw->croph_dirty) {
3137                 int nvres = hdw->std_mask_cur & V4L2_STD_525_60 ? 480 : 576;
3138                 hdw->res_ver_dirty = !0;
3139                 hdw->res_ver_val = min(nvres, hdw->croph_val);
3140         }
3141
3142         /* If any of the below has changed, then we can't do the update
3143            while the pipeline is running.  Pipeline must be paused first
3144            and decoder -> encoder connection be made quiescent before we
3145            can proceed. */
3146         disruptive_change =
3147                 (hdw->std_dirty ||
3148                  hdw->enc_unsafe_stale ||
3149                  hdw->srate_dirty ||
3150                  hdw->res_ver_dirty ||
3151                  hdw->res_hor_dirty ||
3152                  hdw->cropw_dirty ||
3153                  hdw->croph_dirty ||
3154                  hdw->input_dirty ||
3155                  (hdw->active_stream_type != hdw->desired_stream_type));
3156         if (disruptive_change && !hdw->state_pipeline_idle) {
3157                 /* Pipeline is not idle; we can't proceed.  Arrange to
3158                    cause pipeline to stop so that we can try this again
3159                    later.... */
3160                 hdw->state_pipeline_pause = !0;
3161                 return 0;
3162         }
3163
3164         if (hdw->srate_dirty) {
3165                 /* Write new sample rate into control structure since
3166                  * the master copy is stale.  We must track srate
3167                  * separate from the mpeg control structure because
3168                  * other logic also uses this value. */
3169                 struct v4l2_ext_controls cs;
3170                 struct v4l2_ext_control c1;
3171                 memset(&cs,0,sizeof(cs));
3172                 memset(&c1,0,sizeof(c1));
3173                 cs.controls = &c1;
3174                 cs.count = 1;
3175                 c1.id = V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ;
3176                 c1.value = hdw->srate_val;
3177                 cx2341x_ext_ctrls(&hdw->enc_ctl_state, 0, &cs,VIDIOC_S_EXT_CTRLS);
3178         }
3179
3180         if (hdw->active_stream_type != hdw->desired_stream_type) {
3181                 /* Handle any side effects of stream config here */
3182                 hdw->active_stream_type = hdw->desired_stream_type;
3183         }
3184
3185         if (hdw->hdw_desc->signal_routing_scheme ==
3186             PVR2_ROUTING_SCHEME_GOTVIEW) {
3187                 u32 b;
3188                 /* Handle GOTVIEW audio switching */
3189                 pvr2_hdw_gpio_get_out(hdw,&b);
3190                 if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
3191                         /* Set GPIO 11 */
3192                         pvr2_hdw_gpio_chg_out(hdw,(1 << 11),~0);
3193                 } else {
3194                         /* Clear GPIO 11 */
3195                         pvr2_hdw_gpio_chg_out(hdw,(1 << 11),0);
3196                 }
3197         }
3198
3199         /* Check and update state for all sub-devices. */
3200         pvr2_subdev_update(hdw);
3201
3202         hdw->tuner_updated = 0;
3203         hdw->force_dirty = 0;
3204         for (idx = 0; idx < hdw->control_cnt; idx++) {
3205                 cptr = hdw->controls + idx;
3206                 if (!cptr->info->clear_dirty) continue;
3207                 cptr->info->clear_dirty(cptr);
3208         }
3209
3210         if ((hdw->pathway_state == PVR2_PATHWAY_ANALOG) &&
3211             hdw->state_encoder_run) {
3212                 /* If encoder isn't running or it can't be touched, then
3213                    this will get worked out later when we start the
3214                    encoder. */
3215                 if (pvr2_encoder_adjust(hdw) < 0) return !0;
3216         }
3217
3218         hdw->state_pipeline_config = !0;
3219         /* Hardware state may have changed in a way to cause the cropping
3220            capabilities to have changed.  So mark it stale, which will
3221            cause a later re-fetch. */
3222         trace_stbit("state_pipeline_config",hdw->state_pipeline_config);
3223         return !0;
3224 }
3225
3226
3227 int pvr2_hdw_commit_ctl(struct pvr2_hdw *hdw)
3228 {
3229         int fl;
3230         LOCK_TAKE(hdw->big_lock);
3231         fl = pvr2_hdw_commit_setup(hdw);
3232         LOCK_GIVE(hdw->big_lock);
3233         if (!fl) return 0;
3234         return pvr2_hdw_wait(hdw,0);
3235 }
3236
3237
3238 static void pvr2_hdw_worker_poll(struct work_struct *work)
3239 {
3240         int fl = 0;
3241         struct pvr2_hdw *hdw = container_of(work,struct pvr2_hdw,workpoll);
3242         LOCK_TAKE(hdw->big_lock); do {
3243                 fl = pvr2_hdw_state_eval(hdw);
3244         } while (0); LOCK_GIVE(hdw->big_lock);
3245         if (fl && hdw->state_func) {
3246                 hdw->state_func(hdw->state_data);
3247         }
3248 }
3249
3250
3251 static int pvr2_hdw_wait(struct pvr2_hdw *hdw,int state)
3252 {
3253         return wait_event_interruptible(
3254                 hdw->state_wait_data,
3255                 (hdw->state_stale == 0) &&
3256                 (!state || (hdw->master_state != state)));
3257 }
3258
3259
3260 /* Return name for this driver instance */
3261 const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *hdw)
3262 {
3263         return hdw->name;
3264 }
3265
3266
3267 const char *pvr2_hdw_get_desc(struct pvr2_hdw *hdw)
3268 {
3269         return hdw->hdw_desc->description;
3270 }
3271
3272
3273 const char *pvr2_hdw_get_type(struct pvr2_hdw *hdw)
3274 {
3275         return hdw->hdw_desc->shortname;
3276 }
3277
3278
3279 int pvr2_hdw_is_hsm(struct pvr2_hdw *hdw)
3280 {
3281         int result;
3282         LOCK_TAKE(hdw->ctl_lock); do {
3283                 hdw->cmd_buffer[0] = FX2CMD_GET_USB_SPEED;
3284                 result = pvr2_send_request(hdw,
3285                                            hdw->cmd_buffer,1,
3286                                            hdw->cmd_buffer,1);
3287                 if (result < 0) break;
3288                 result = (hdw->cmd_buffer[0] != 0);
3289         } while(0); LOCK_GIVE(hdw->ctl_lock);
3290         return result;
3291 }
3292
3293
3294 /* Execute poll of tuner status */
3295 void pvr2_hdw_execute_tuner_poll(struct pvr2_hdw *hdw)
3296 {
3297         LOCK_TAKE(hdw->big_lock); do {
3298                 pvr2_hdw_status_poll(hdw);
3299         } while (0); LOCK_GIVE(hdw->big_lock);
3300 }
3301
3302
3303 static int pvr2_hdw_check_cropcap(struct pvr2_hdw *hdw)
3304 {
3305         if (!hdw->cropcap_stale) {
3306                 return 0;
3307         }
3308         pvr2_hdw_status_poll(hdw);
3309         if (hdw->cropcap_stale) {
3310                 return -EIO;
3311         }
3312         return 0;
3313 }
3314
3315
3316 /* Return information about cropping capabilities */
3317 int pvr2_hdw_get_cropcap(struct pvr2_hdw *hdw, struct v4l2_cropcap *pp)
3318 {
3319         int stat = 0;
3320         LOCK_TAKE(hdw->big_lock);
3321         stat = pvr2_hdw_check_cropcap(hdw);
3322         if (!stat) {
3323                 memcpy(pp, &hdw->cropcap_info, sizeof(hdw->cropcap_info));
3324         }
3325         LOCK_GIVE(hdw->big_lock);
3326         return stat;
3327 }
3328
3329
3330 /* Return information about the tuner */
3331 int pvr2_hdw_get_tuner_status(struct pvr2_hdw *hdw,struct v4l2_tuner *vtp)
3332 {
3333         LOCK_TAKE(hdw->big_lock); do {
3334                 if (hdw->tuner_signal_stale) {
3335                         pvr2_hdw_status_poll(hdw);
3336                 }
3337                 memcpy(vtp,&hdw->tuner_signal_info,sizeof(struct v4l2_tuner));
3338         } while (0); LOCK_GIVE(hdw->big_lock);
3339         return 0;
3340 }
3341
3342
3343 /* Get handle to video output stream */
3344 struct pvr2_stream *pvr2_hdw_get_video_stream(struct pvr2_hdw *hp)
3345 {
3346         return hp->vid_stream;
3347 }
3348
3349
3350 void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw)
3351 {
3352         int nr = pvr2_hdw_get_unit_number(hdw);
3353         LOCK_TAKE(hdw->big_lock);
3354         do {
3355                 printk(KERN_INFO "pvrusb2: =================  START STATUS CARD #%d  =================\n", nr);
3356                 v4l2_device_call_all(&hdw->v4l2_dev, 0, core, log_status);
3357                 pvr2_trace(PVR2_TRACE_INFO,"cx2341x config:");
3358                 cx2341x_log_status(&hdw->enc_ctl_state, "pvrusb2");
3359                 pvr2_hdw_state_log_state(hdw);
3360                 printk(KERN_INFO "pvrusb2: ==================  END STATUS CARD #%d  ==================\n", nr);
3361         } while (0);
3362         LOCK_GIVE(hdw->big_lock);
3363 }
3364
3365
3366 /* Grab EEPROM contents, needed for direct method. */
3367 #define EEPROM_SIZE 8192
3368 #define trace_eeprom(...) pvr2_trace(PVR2_TRACE_EEPROM,__VA_ARGS__)
3369 static u8 *pvr2_full_eeprom_fetch(struct pvr2_hdw *hdw)
3370 {
3371         struct i2c_msg msg[2];
3372         u8 *eeprom;
3373         u8 iadd[2];
3374         u8 addr;
3375         u16 eepromSize;
3376         unsigned int offs;
3377         int ret;
3378         int mode16 = 0;
3379         unsigned pcnt,tcnt;
3380         eeprom = kmalloc(EEPROM_SIZE,GFP_KERNEL);
3381         if (!eeprom) {
3382                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3383                            "Failed to allocate memory"
3384                            " required to read eeprom");
3385                 return NULL;
3386         }
3387
3388         trace_eeprom("Value for eeprom addr from controller was 0x%x",
3389                      hdw->eeprom_addr);
3390         addr = hdw->eeprom_addr;
3391         /* Seems that if the high bit is set, then the *real* eeprom
3392            address is shifted right now bit position (noticed this in
3393            newer PVR USB2 hardware) */
3394         if (addr & 0x80) addr >>= 1;
3395
3396         /* FX2 documentation states that a 16bit-addressed eeprom is
3397            expected if the I2C address is an odd number (yeah, this is
3398            strange but it's what they do) */
3399         mode16 = (addr & 1);
3400         eepromSize = (mode16 ? EEPROM_SIZE : 256);
3401         trace_eeprom("Examining %d byte eeprom at location 0x%x"
3402                      " using %d bit addressing",eepromSize,addr,
3403                      mode16 ? 16 : 8);
3404
3405         msg[0].addr = addr;
3406         msg[0].flags = 0;
3407         msg[0].len = mode16 ? 2 : 1;
3408         msg[0].buf = iadd;
3409         msg[1].addr = addr;
3410         msg[1].flags = I2C_M_RD;
3411
3412         /* We have to do the actual eeprom data fetch ourselves, because
3413            (1) we're only fetching part of the eeprom, and (2) if we were
3414            getting the whole thing our I2C driver can't grab it in one
3415            pass - which is what tveeprom is otherwise going to attempt */
3416         memset(eeprom,0,EEPROM_SIZE);
3417         for (tcnt = 0; tcnt < EEPROM_SIZE; tcnt += pcnt) {
3418                 pcnt = 16;
3419                 if (pcnt + tcnt > EEPROM_SIZE) pcnt = EEPROM_SIZE-tcnt;
3420                 offs = tcnt + (eepromSize - EEPROM_SIZE);
3421                 if (mode16) {
3422                         iadd[0] = offs >> 8;
3423                         iadd[1] = offs;
3424                 } else {
3425                         iadd[0] = offs;
3426                 }
3427                 msg[1].len = pcnt;
3428                 msg[1].buf = eeprom+tcnt;
3429                 if ((ret = i2c_transfer(&hdw->i2c_adap,
3430                                         msg,ARRAY_SIZE(msg))) != 2) {
3431                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3432                                    "eeprom fetch set offs err=%d",ret);
3433                         kfree(eeprom);
3434                         return NULL;
3435                 }
3436         }
3437         return eeprom;
3438 }
3439
3440
3441 void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *hdw,
3442                                 int mode,
3443                                 int enable_flag)
3444 {
3445         int ret;
3446         u16 address;
3447         unsigned int pipe;
3448         LOCK_TAKE(hdw->big_lock); do {
3449                 if ((hdw->fw_buffer == NULL) == !enable_flag) break;
3450
3451                 if (!enable_flag) {
3452                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3453                                    "Cleaning up after CPU firmware fetch");
3454                         kfree(hdw->fw_buffer);
3455                         hdw->fw_buffer = NULL;
3456                         hdw->fw_size = 0;
3457                         if (hdw->fw_cpu_flag) {
3458                                 /* Now release the CPU.  It will disconnect
3459                                    and reconnect later. */
3460                                 pvr2_hdw_cpureset_assert(hdw,0);
3461                         }
3462                         break;
3463                 }
3464
3465                 hdw->fw_cpu_flag = (mode != 2);
3466                 if (hdw->fw_cpu_flag) {
3467                         hdw->fw_size = (mode == 1) ? 0x4000 : 0x2000;
3468                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3469                                    "Preparing to suck out CPU firmware"
3470                                    " (size=%u)", hdw->fw_size);
3471                         hdw->fw_buffer = kzalloc(hdw->fw_size,GFP_KERNEL);
3472                         if (!hdw->fw_buffer) {
3473                                 hdw->fw_size = 0;
3474                                 break;
3475                         }
3476
3477                         /* We have to hold the CPU during firmware upload. */
3478                         pvr2_hdw_cpureset_assert(hdw,1);
3479
3480                         /* download the firmware from address 0000-1fff in 2048
3481                            (=0x800) bytes chunk. */
3482
3483                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3484                                    "Grabbing CPU firmware");
3485                         pipe = usb_rcvctrlpipe(hdw->usb_dev, 0);
3486                         for(address = 0; address < hdw->fw_size;
3487                             address += 0x800) {
3488                                 ret = usb_control_msg(hdw->usb_dev,pipe,
3489                                                       0xa0,0xc0,
3490                                                       address,0,
3491                                                       hdw->fw_buffer+address,
3492                                                       0x800,HZ);
3493                                 if (ret < 0) break;
3494                         }
3495
3496                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3497                                    "Done grabbing CPU firmware");
3498                 } else {
3499                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3500                                    "Sucking down EEPROM contents");
3501                         hdw->fw_buffer = pvr2_full_eeprom_fetch(hdw);
3502                         if (!hdw->fw_buffer) {
3503                                 pvr2_trace(PVR2_TRACE_FIRMWARE,
3504                                            "EEPROM content suck failed.");
3505                                 break;
3506                         }
3507                         hdw->fw_size = EEPROM_SIZE;
3508                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3509                                    "Done sucking down EEPROM contents");
3510                 }
3511
3512         } while (0); LOCK_GIVE(hdw->big_lock);
3513 }
3514
3515
3516 /* Return true if we're in a mode for retrieval CPU firmware */
3517 int pvr2_hdw_cpufw_get_enabled(struct pvr2_hdw *hdw)
3518 {
3519         return hdw->fw_buffer != NULL;
3520 }
3521
3522
3523 int pvr2_hdw_cpufw_get(struct pvr2_hdw *hdw,unsigned int offs,
3524                        char *buf,unsigned int cnt)
3525 {
3526         int ret = -EINVAL;
3527         LOCK_TAKE(hdw->big_lock); do {
3528                 if (!buf) break;
3529                 if (!cnt) break;
3530
3531                 if (!hdw->fw_buffer) {
3532                         ret = -EIO;
3533                         break;
3534                 }
3535
3536                 if (offs >= hdw->fw_size) {
3537                         pvr2_trace(PVR2_TRACE_FIRMWARE,
3538                                    "Read firmware data offs=%d EOF",
3539                                    offs);
3540                         ret = 0;
3541                         break;
3542                 }
3543
3544                 if (offs + cnt > hdw->fw_size) cnt = hdw->fw_size - offs;
3545
3546                 memcpy(buf,hdw->fw_buffer+offs,cnt);
3547
3548                 pvr2_trace(PVR2_TRACE_FIRMWARE,
3549                            "Read firmware data offs=%d cnt=%d",
3550                            offs,cnt);
3551                 ret = cnt;
3552         } while (0); LOCK_GIVE(hdw->big_lock);
3553
3554         return ret;
3555 }
3556
3557
3558 int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *hdw,
3559                                   enum pvr2_v4l_type index)
3560 {
3561         switch (index) {
3562         case pvr2_v4l_type_video: return hdw->v4l_minor_number_video;
3563         case pvr2_v4l_type_vbi: return hdw->v4l_minor_number_vbi;
3564         case pvr2_v4l_type_radio: return hdw->v4l_minor_number_radio;
3565         default: return -1;
3566         }
3567 }
3568
3569
3570 /* Store a v4l minor device number */
3571 void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *hdw,
3572                                      enum pvr2_v4l_type index,int v)
3573 {
3574         switch (index) {
3575         case pvr2_v4l_type_video: hdw->v4l_minor_number_video = v;break;
3576         case pvr2_v4l_type_vbi: hdw->v4l_minor_number_vbi = v;break;
3577         case pvr2_v4l_type_radio: hdw->v4l_minor_number_radio = v;break;
3578         default: break;
3579         }
3580 }
3581
3582
3583 static void pvr2_ctl_write_complete(struct urb *urb)
3584 {
3585         struct pvr2_hdw *hdw = urb->context;
3586         hdw->ctl_write_pend_flag = 0;
3587         if (hdw->ctl_read_pend_flag) return;
3588         complete(&hdw->ctl_done);
3589 }
3590
3591
3592 static void pvr2_ctl_read_complete(struct urb *urb)
3593 {
3594         struct pvr2_hdw *hdw = urb->context;
3595         hdw->ctl_read_pend_flag = 0;
3596         if (hdw->ctl_write_pend_flag) return;
3597         complete(&hdw->ctl_done);
3598 }
3599
3600
3601 static void pvr2_ctl_timeout(unsigned long data)
3602 {
3603         struct pvr2_hdw *hdw = (struct pvr2_hdw *)data;
3604         if (hdw->ctl_write_pend_flag || hdw->ctl_read_pend_flag) {
3605                 hdw->ctl_timeout_flag = !0;
3606                 if (hdw->ctl_write_pend_flag)
3607                         usb_unlink_urb(hdw->ctl_write_urb);
3608                 if (hdw->ctl_read_pend_flag)
3609                         usb_unlink_urb(hdw->ctl_read_urb);
3610         }
3611 }
3612
3613
3614 /* Issue a command and get a response from the device.  This extended
3615    version includes a probe flag (which if set means that device errors
3616    should not be logged or treated as fatal) and a timeout in jiffies.
3617    This can be used to non-lethally probe the health of endpoint 1. */
3618 static int pvr2_send_request_ex(struct pvr2_hdw *hdw,
3619                                 unsigned int timeout,int probe_fl,
3620                                 void *write_data,unsigned int write_len,
3621                                 void *read_data,unsigned int read_len)
3622 {
3623         unsigned int idx;
3624         int status = 0;
3625         struct timer_list timer;
3626         if (!hdw->ctl_lock_held) {
3627                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3628                            "Attempted to execute control transfer"
3629                            " without lock!!");
3630                 return -EDEADLK;
3631         }
3632         if (!hdw->flag_ok && !probe_fl) {
3633                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3634                            "Attempted to execute control transfer"
3635                            " when device not ok");
3636                 return -EIO;
3637         }
3638         if (!(hdw->ctl_read_urb && hdw->ctl_write_urb)) {
3639                 if (!probe_fl) {
3640                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3641                                    "Attempted to execute control transfer"
3642                                    " when USB is disconnected");
3643                 }
3644                 return -ENOTTY;
3645         }
3646
3647         /* Ensure that we have sane parameters */
3648         if (!write_data) write_len = 0;
3649         if (!read_data) read_len = 0;
3650         if (write_len > PVR2_CTL_BUFFSIZE) {
3651                 pvr2_trace(
3652                         PVR2_TRACE_ERROR_LEGS,
3653                         "Attempted to execute %d byte"
3654                         " control-write transfer (limit=%d)",
3655                         write_len,PVR2_CTL_BUFFSIZE);
3656                 return -EINVAL;
3657         }
3658         if (read_len > PVR2_CTL_BUFFSIZE) {
3659                 pvr2_trace(
3660                         PVR2_TRACE_ERROR_LEGS,
3661                         "Attempted to execute %d byte"
3662                         " control-read transfer (limit=%d)",
3663                         write_len,PVR2_CTL_BUFFSIZE);
3664                 return -EINVAL;
3665         }
3666         if ((!write_len) && (!read_len)) {
3667                 pvr2_trace(
3668                         PVR2_TRACE_ERROR_LEGS,
3669                         "Attempted to execute null control transfer?");
3670                 return -EINVAL;
3671         }
3672
3673
3674         hdw->cmd_debug_state = 1;
3675         if (write_len) {
3676                 hdw->cmd_debug_code = ((unsigned char *)write_data)[0];
3677         } else {
3678                 hdw->cmd_debug_code = 0;
3679         }
3680         hdw->cmd_debug_write_len = write_len;
3681         hdw->cmd_debug_read_len = read_len;
3682
3683         /* Initialize common stuff */
3684         init_completion(&hdw->ctl_done);
3685         hdw->ctl_timeout_flag = 0;
3686         hdw->ctl_write_pend_flag = 0;
3687         hdw->ctl_read_pend_flag = 0;
3688         setup_timer(&timer, pvr2_ctl_timeout, (unsigned long)hdw);
3689         timer.expires = jiffies + timeout;
3690
3691         if (write_len) {
3692                 hdw->cmd_debug_state = 2;
3693                 /* Transfer write data to internal buffer */
3694                 for (idx = 0; idx < write_len; idx++) {
3695                         hdw->ctl_write_buffer[idx] =
3696                                 ((unsigned char *)write_data)[idx];
3697                 }
3698                 /* Initiate a write request */
3699                 usb_fill_bulk_urb(hdw->ctl_write_urb,
3700                                   hdw->usb_dev,
3701                                   usb_sndbulkpipe(hdw->usb_dev,
3702                                                   PVR2_CTL_WRITE_ENDPOINT),
3703                                   hdw->ctl_write_buffer,
3704                                   write_len,
3705                                   pvr2_ctl_write_complete,
3706                                   hdw);
3707                 hdw->ctl_write_urb->actual_length = 0;
3708                 hdw->ctl_write_pend_flag = !0;
3709                 status = usb_submit_urb(hdw->ctl_write_urb,GFP_KERNEL);
3710                 if (status < 0) {
3711                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3712                                    "Failed to submit write-control"
3713                                    " URB status=%d",status);
3714                         hdw->ctl_write_pend_flag = 0;
3715                         goto done;
3716                 }
3717         }
3718
3719         if (read_len) {
3720                 hdw->cmd_debug_state = 3;
3721                 memset(hdw->ctl_read_buffer,0x43,read_len);
3722                 /* Initiate a read request */
3723                 usb_fill_bulk_urb(hdw->ctl_read_urb,
3724                                   hdw->usb_dev,
3725                                   usb_rcvbulkpipe(hdw->usb_dev,
3726                                                   PVR2_CTL_READ_ENDPOINT),
3727                                   hdw->ctl_read_buffer,
3728                                   read_len,
3729                                   pvr2_ctl_read_complete,
3730                                   hdw);
3731                 hdw->ctl_read_urb->actual_length = 0;
3732                 hdw->ctl_read_pend_flag = !0;
3733                 status = usb_submit_urb(hdw->ctl_read_urb,GFP_KERNEL);
3734                 if (status < 0) {
3735                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3736                                    "Failed to submit read-control"
3737                                    " URB status=%d",status);
3738                         hdw->ctl_read_pend_flag = 0;
3739                         goto done;
3740                 }
3741         }
3742
3743         /* Start timer */
3744         add_timer(&timer);
3745
3746         /* Now wait for all I/O to complete */
3747         hdw->cmd_debug_state = 4;
3748         while (hdw->ctl_write_pend_flag || hdw->ctl_read_pend_flag) {
3749                 wait_for_completion(&hdw->ctl_done);
3750         }
3751         hdw->cmd_debug_state = 5;
3752
3753         /* Stop timer */
3754         del_timer_sync(&timer);
3755
3756         hdw->cmd_debug_state = 6;
3757         status = 0;
3758
3759         if (hdw->ctl_timeout_flag) {
3760                 status = -ETIMEDOUT;
3761                 if (!probe_fl) {
3762                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3763                                    "Timed out control-write");
3764                 }
3765                 goto done;
3766         }
3767
3768         if (write_len) {
3769                 /* Validate results of write request */
3770                 if ((hdw->ctl_write_urb->status != 0) &&
3771                     (hdw->ctl_write_urb->status != -ENOENT) &&
3772                     (hdw->ctl_write_urb->status != -ESHUTDOWN) &&
3773                     (hdw->ctl_write_urb->status != -ECONNRESET)) {
3774                         /* USB subsystem is reporting some kind of failure
3775                            on the write */
3776                         status = hdw->ctl_write_urb->status;
3777                         if (!probe_fl) {
3778                                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3779                                            "control-write URB failure,"
3780                                            " status=%d",
3781                                            status);
3782                         }
3783                         goto done;
3784                 }
3785                 if (hdw->ctl_write_urb->actual_length < write_len) {
3786                         /* Failed to write enough data */
3787                         status = -EIO;
3788                         if (!probe_fl) {
3789                                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3790                                            "control-write URB short,"
3791                                            " expected=%d got=%d",
3792                                            write_len,
3793                                            hdw->ctl_write_urb->actual_length);
3794                         }
3795                         goto done;
3796                 }
3797         }
3798         if (read_len) {
3799                 /* Validate results of read request */
3800                 if ((hdw->ctl_read_urb->status != 0) &&
3801                     (hdw->ctl_read_urb->status != -ENOENT) &&
3802                     (hdw->ctl_read_urb->status != -ESHUTDOWN) &&
3803                     (hdw->ctl_read_urb->status != -ECONNRESET)) {
3804                         /* USB subsystem is reporting some kind of failure
3805                            on the read */
3806                         status = hdw->ctl_read_urb->status;
3807                         if (!probe_fl) {
3808                                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3809                                            "control-read URB failure,"
3810                                            " status=%d",
3811                                            status);
3812                         }
3813                         goto done;
3814                 }
3815                 if (hdw->ctl_read_urb->actual_length < read_len) {
3816                         /* Failed to read enough data */
3817                         status = -EIO;
3818                         if (!probe_fl) {
3819                                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3820                                            "control-read URB short,"
3821                                            " expected=%d got=%d",
3822                                            read_len,
3823                                            hdw->ctl_read_urb->actual_length);
3824                         }
3825                         goto done;
3826                 }
3827                 /* Transfer retrieved data out from internal buffer */
3828                 for (idx = 0; idx < read_len; idx++) {
3829                         ((unsigned char *)read_data)[idx] =
3830                                 hdw->ctl_read_buffer[idx];
3831                 }
3832         }
3833
3834  done:
3835
3836         hdw->cmd_debug_state = 0;
3837         if ((status < 0) && (!probe_fl)) {
3838                 pvr2_hdw_render_useless(hdw);
3839         }
3840         return status;
3841 }
3842
3843
3844 int pvr2_send_request(struct pvr2_hdw *hdw,
3845                       void *write_data,unsigned int write_len,
3846                       void *read_data,unsigned int read_len)
3847 {
3848         return pvr2_send_request_ex(hdw,HZ*4,0,
3849                                     write_data,write_len,
3850                                     read_data,read_len);
3851 }
3852
3853
3854 static int pvr2_issue_simple_cmd(struct pvr2_hdw *hdw,u32 cmdcode)
3855 {
3856         int ret;
3857         unsigned int cnt = 1;
3858         unsigned int args = 0;
3859         LOCK_TAKE(hdw->ctl_lock);
3860         hdw->cmd_buffer[0] = cmdcode & 0xffu;
3861         args = (cmdcode >> 8) & 0xffu;
3862         args = (args > 2) ? 2 : args;
3863         if (args) {
3864                 cnt += args;
3865                 hdw->cmd_buffer[1] = (cmdcode >> 16) & 0xffu;
3866                 if (args > 1) {
3867                         hdw->cmd_buffer[2] = (cmdcode >> 24) & 0xffu;
3868                 }
3869         }
3870         if (pvrusb2_debug & PVR2_TRACE_INIT) {
3871                 unsigned int idx;
3872                 unsigned int ccnt,bcnt;
3873                 char tbuf[50];
3874                 cmdcode &= 0xffu;
3875                 bcnt = 0;
3876                 ccnt = scnprintf(tbuf+bcnt,
3877                                  sizeof(tbuf)-bcnt,
3878                                  "Sending FX2 command 0x%x",cmdcode);
3879                 bcnt += ccnt;
3880                 for (idx = 0; idx < ARRAY_SIZE(pvr2_fx2cmd_desc); idx++) {
3881                         if (pvr2_fx2cmd_desc[idx].id == cmdcode) {
3882                                 ccnt = scnprintf(tbuf+bcnt,
3883                                                  sizeof(tbuf)-bcnt,
3884                                                  " \"%s\"",
3885                                                  pvr2_fx2cmd_desc[idx].desc);
3886                                 bcnt += ccnt;
3887                                 break;
3888                         }
3889                 }
3890                 if (args) {
3891                         ccnt = scnprintf(tbuf+bcnt,
3892                                          sizeof(tbuf)-bcnt,
3893                                          " (%u",hdw->cmd_buffer[1]);
3894                         bcnt += ccnt;
3895                         if (args > 1) {
3896                                 ccnt = scnprintf(tbuf+bcnt,
3897                                                  sizeof(tbuf)-bcnt,
3898                                                  ",%u",hdw->cmd_buffer[2]);
3899                                 bcnt += ccnt;
3900                         }
3901                         ccnt = scnprintf(tbuf+bcnt,
3902                                          sizeof(tbuf)-bcnt,
3903                                          ")");
3904                         bcnt += ccnt;
3905                 }
3906                 pvr2_trace(PVR2_TRACE_INIT,"%.*s",bcnt,tbuf);
3907         }
3908         ret = pvr2_send_request(hdw,hdw->cmd_buffer,cnt,NULL,0);
3909         LOCK_GIVE(hdw->ctl_lock);
3910         return ret;
3911 }
3912
3913
3914 int pvr2_write_register(struct pvr2_hdw *hdw, u16 reg, u32 data)
3915 {
3916         int ret;
3917
3918         LOCK_TAKE(hdw->ctl_lock);
3919
3920         hdw->cmd_buffer[0] = FX2CMD_REG_WRITE;  /* write register prefix */
3921         PVR2_DECOMPOSE_LE(hdw->cmd_buffer,1,data);
3922         hdw->cmd_buffer[5] = 0;
3923         hdw->cmd_buffer[6] = (reg >> 8) & 0xff;
3924         hdw->cmd_buffer[7] = reg & 0xff;
3925
3926
3927         ret = pvr2_send_request(hdw, hdw->cmd_buffer, 8, hdw->cmd_buffer, 0);
3928
3929         LOCK_GIVE(hdw->ctl_lock);
3930
3931         return ret;
3932 }
3933
3934
3935 static int pvr2_read_register(struct pvr2_hdw *hdw, u16 reg, u32 *data)
3936 {
3937         int ret = 0;
3938
3939         LOCK_TAKE(hdw->ctl_lock);
3940
3941         hdw->cmd_buffer[0] = FX2CMD_REG_READ;  /* read register prefix */
3942         hdw->cmd_buffer[1] = 0;
3943         hdw->cmd_buffer[2] = 0;
3944         hdw->cmd_buffer[3] = 0;
3945         hdw->cmd_buffer[4] = 0;
3946         hdw->cmd_buffer[5] = 0;
3947         hdw->cmd_buffer[6] = (reg >> 8) & 0xff;
3948         hdw->cmd_buffer[7] = reg & 0xff;
3949
3950         ret |= pvr2_send_request(hdw, hdw->cmd_buffer, 8, hdw->cmd_buffer, 4);
3951         *data = PVR2_COMPOSE_LE(hdw->cmd_buffer,0);
3952
3953         LOCK_GIVE(hdw->ctl_lock);
3954
3955         return ret;
3956 }
3957
3958
3959 void pvr2_hdw_render_useless(struct pvr2_hdw *hdw)
3960 {
3961         if (!hdw->flag_ok) return;
3962         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3963                    "Device being rendered inoperable");
3964         if (hdw->vid_stream) {
3965                 pvr2_stream_setup(hdw->vid_stream,NULL,0,0);
3966         }
3967         hdw->flag_ok = 0;
3968         trace_stbit("flag_ok",hdw->flag_ok);
3969         pvr2_hdw_state_sched(hdw);
3970 }
3971
3972
3973 void pvr2_hdw_device_reset(struct pvr2_hdw *hdw)
3974 {
3975         int ret;
3976         pvr2_trace(PVR2_TRACE_INIT,"Performing a device reset...");
3977         ret = usb_lock_device_for_reset(hdw->usb_dev,NULL);
3978         if (ret == 0) {
3979                 ret = usb_reset_device(hdw->usb_dev);
3980                 usb_unlock_device(hdw->usb_dev);
3981         } else {
3982                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
3983                            "Failed to lock USB device ret=%d",ret);
3984         }
3985         if (init_pause_msec) {
3986                 pvr2_trace(PVR2_TRACE_INFO,
3987                            "Waiting %u msec for hardware to settle",
3988                            init_pause_msec);
3989                 msleep(init_pause_msec);
3990         }
3991
3992 }
3993
3994
3995 void pvr2_hdw_cpureset_assert(struct pvr2_hdw *hdw,int val)
3996 {
3997         char *da;
3998         unsigned int pipe;
3999         int ret;
4000
4001         if (!hdw->usb_dev) return;
4002
4003         da = kmalloc(16, GFP_KERNEL);
4004
4005         if (da == NULL) {
4006                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
4007                            "Unable to allocate memory to control CPU reset");
4008                 return;
4009         }
4010
4011         pvr2_trace(PVR2_TRACE_INIT,"cpureset_assert(%d)",val);
4012
4013         da[0] = val ? 0x01 : 0x00;
4014
4015         /* Write the CPUCS register on the 8051.  The lsb of the register
4016            is the reset bit; a 1 asserts reset while a 0 clears it. */
4017         pipe = usb_sndctrlpipe(hdw->usb_dev, 0);
4018         ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,HZ);
4019         if (ret < 0) {
4020                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
4021                            "cpureset_assert(%d) error=%d",val,ret);
4022                 pvr2_hdw_render_useless(hdw);
4023         }
4024
4025         kfree(da);
4026 }
4027
4028
4029 int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *hdw)
4030 {
4031         return pvr2_issue_simple_cmd(hdw,FX2CMD_DEEP_RESET);
4032 }
4033
4034
4035 int pvr2_hdw_cmd_powerup(struct pvr2_hdw *hdw)
4036 {
4037         return pvr2_issue_simple_cmd(hdw,FX2CMD_POWER_ON);
4038 }
4039
4040
4041
4042 int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *hdw)
4043 {
4044         pvr2_trace(PVR2_TRACE_INIT,
4045                    "Requesting decoder reset");
4046         if (hdw->decoder_client_id) {
4047                 v4l2_device_call_all(&hdw->v4l2_dev, hdw->decoder_client_id,
4048                                      core, reset, 0);
4049                 pvr2_hdw_cx25840_vbi_hack(hdw);
4050                 return 0;
4051         }
4052         pvr2_trace(PVR2_TRACE_INIT,
4053                    "Unable to reset decoder: nothing attached");
4054         return -ENOTTY;
4055 }
4056
4057
4058 static int pvr2_hdw_cmd_hcw_demod_reset(struct pvr2_hdw *hdw, int onoff)
4059 {
4060         hdw->flag_ok = !0;
4061         return pvr2_issue_simple_cmd(hdw,
4062                                      FX2CMD_HCW_DEMOD_RESETIN |
4063                                      (1 << 8) |
4064                                      ((onoff ? 1 : 0) << 16));
4065 }
4066
4067
4068 static int pvr2_hdw_cmd_onair_fe_power_ctrl(struct pvr2_hdw *hdw, int onoff)
4069 {
4070         hdw->flag_ok = !0;
4071         return pvr2_issue_simple_cmd(hdw,(onoff ?
4072                                           FX2CMD_ONAIR_DTV_POWER_ON :
4073                                           FX2CMD_ONAIR_DTV_POWER_OFF));
4074 }
4075
4076
4077 static int pvr2_hdw_cmd_onair_digital_path_ctrl(struct pvr2_hdw *hdw,
4078                                                 int onoff)
4079 {
4080         return pvr2_issue_simple_cmd(hdw,(onoff ?
4081                                           FX2CMD_ONAIR_DTV_STREAMING_ON :
4082                                           FX2CMD_ONAIR_DTV_STREAMING_OFF));
4083 }
4084
4085
4086 static void pvr2_hdw_cmd_modeswitch(struct pvr2_hdw *hdw,int digitalFl)
4087 {
4088         int cmode;
4089         /* Compare digital/analog desired setting with current setting.  If
4090            they don't match, fix it... */
4091         cmode = (digitalFl ? PVR2_PATHWAY_DIGITAL : PVR2_PATHWAY_ANALOG);
4092         if (cmode == hdw->pathway_state) {
4093                 /* They match; nothing to do */
4094                 return;
4095         }
4096
4097         switch (hdw->hdw_desc->digital_control_scheme) {
4098         case PVR2_DIGITAL_SCHEME_HAUPPAUGE:
4099                 pvr2_hdw_cmd_hcw_demod_reset(hdw,digitalFl);
4100                 if (cmode == PVR2_PATHWAY_ANALOG) {
4101                         /* If moving to analog mode, also force the decoder
4102                            to reset.  If no decoder is attached, then it's
4103                            ok to ignore this because if/when the decoder
4104                            attaches, it will reset itself at that time. */
4105                         pvr2_hdw_cmd_decoder_reset(hdw);
4106                 }
4107                 break;
4108         case PVR2_DIGITAL_SCHEME_ONAIR:
4109                 /* Supposedly we should always have the power on whether in
4110                    digital or analog mode.  But for now do what appears to
4111                    work... */
4112                 pvr2_hdw_cmd_onair_fe_power_ctrl(hdw,digitalFl);
4113                 break;
4114         default: break;
4115         }
4116
4117         pvr2_hdw_untrip_unlocked(hdw);
4118         hdw->pathway_state = cmode;
4119 }
4120
4121
4122 static void pvr2_led_ctrl_hauppauge(struct pvr2_hdw *hdw, int onoff)
4123 {
4124         /* change some GPIO data
4125          *
4126          * note: bit d7 of dir appears to control the LED,
4127          * so we shut it off here.
4128          *
4129          */
4130         if (onoff) {
4131                 pvr2_hdw_gpio_chg_dir(hdw, 0xffffffff, 0x00000481);
4132         } else {
4133                 pvr2_hdw_gpio_chg_dir(hdw, 0xffffffff, 0x00000401);
4134         }
4135         pvr2_hdw_gpio_chg_out(hdw, 0xffffffff, 0x00000000);
4136 }
4137
4138
4139 typedef void (*led_method_func)(struct pvr2_hdw *,int);
4140
4141 static led_method_func led_methods[] = {
4142         [PVR2_LED_SCHEME_HAUPPAUGE] = pvr2_led_ctrl_hauppauge,
4143 };
4144
4145
4146 /* Toggle LED */
4147 static void pvr2_led_ctrl(struct pvr2_hdw *hdw,int onoff)
4148 {
4149         unsigned int scheme_id;
4150         led_method_func fp;
4151
4152         if ((!onoff) == (!hdw->led_on)) return;
4153
4154         hdw->led_on = onoff != 0;
4155
4156         scheme_id = hdw->hdw_desc->led_scheme;
4157         if (scheme_id < ARRAY_SIZE(led_methods)) {
4158                 fp = led_methods[scheme_id];
4159         } else {
4160                 fp = NULL;
4161         }
4162
4163         if (fp) (*fp)(hdw,onoff);
4164 }
4165
4166
4167 /* Stop / start video stream transport */
4168 static int pvr2_hdw_cmd_usbstream(struct pvr2_hdw *hdw,int runFl)
4169 {
4170         int ret;
4171
4172         /* If we're in analog mode, then just issue the usual analog
4173            command. */
4174         if (hdw->pathway_state == PVR2_PATHWAY_ANALOG) {
4175                 return pvr2_issue_simple_cmd(hdw,
4176                                              (runFl ?
4177                                               FX2CMD_STREAMING_ON :
4178                                               FX2CMD_STREAMING_OFF));
4179                 /*Note: Not reached */
4180         }
4181
4182         if (hdw->pathway_state != PVR2_PATHWAY_DIGITAL) {
4183                 /* Whoops, we don't know what mode we're in... */
4184                 return -EINVAL;
4185         }
4186
4187         /* To get here we have to be in digital mode.  The mechanism here
4188            is unfortunately different for different vendors.  So we switch
4189            on the device's digital scheme attribute in order to figure out
4190            what to do. */
4191         switch (hdw->hdw_desc->digital_control_scheme) {
4192         case PVR2_DIGITAL_SCHEME_HAUPPAUGE:
4193                 return pvr2_issue_simple_cmd(hdw,
4194                                              (runFl ?
4195                                               FX2CMD_HCW_DTV_STREAMING_ON :
4196                                               FX2CMD_HCW_DTV_STREAMING_OFF));
4197         case PVR2_DIGITAL_SCHEME_ONAIR:
4198                 ret = pvr2_issue_simple_cmd(hdw,
4199                                             (runFl ?
4200                                              FX2CMD_STREAMING_ON :
4201                                              FX2CMD_STREAMING_OFF));
4202                 if (ret) return ret;
4203                 return pvr2_hdw_cmd_onair_digital_path_ctrl(hdw,runFl);
4204         default:
4205                 return -EINVAL;
4206         }
4207 }
4208
4209
4210 /* Evaluate whether or not state_pathway_ok can change */
4211 static int state_eval_pathway_ok(struct pvr2_hdw *hdw)
4212 {
4213         if (hdw->state_pathway_ok) {
4214                 /* Nothing to do if pathway is already ok */
4215                 return 0;
4216         }
4217         if (!hdw->state_pipeline_idle) {
4218                 /* Not allowed to change anything if pipeline is not idle */
4219                 return 0;
4220         }
4221         pvr2_hdw_cmd_modeswitch(hdw,hdw->input_val == PVR2_CVAL_INPUT_DTV);
4222         hdw->state_pathway_ok = !0;
4223         trace_stbit("state_pathway_ok",hdw->state_pathway_ok);
4224         return !0;
4225 }
4226
4227
4228 /* Evaluate whether or not state_encoder_ok can change */
4229 static int state_eval_encoder_ok(struct pvr2_hdw *hdw)
4230 {
4231         if (hdw->state_encoder_ok) return 0;
4232         if (hdw->flag_tripped) return 0;
4233         if (hdw->state_encoder_run) return 0;
4234         if (hdw->state_encoder_config) return 0;
4235         if (hdw->state_decoder_run) return 0;
4236         if (hdw->state_usbstream_run) return 0;
4237         if (hdw->pathway_state == PVR2_PATHWAY_DIGITAL) {
4238                 if (!hdw->hdw_desc->flag_digital_requires_cx23416) return 0;
4239         } else if (hdw->pathway_state != PVR2_PATHWAY_ANALOG) {
4240                 return 0;
4241         }
4242
4243         if (pvr2_upload_firmware2(hdw) < 0) {
4244                 hdw->flag_tripped = !0;
4245                 trace_stbit("flag_tripped",hdw->flag_tripped);
4246                 return !0;
4247         }
4248         hdw->state_encoder_ok = !0;
4249         trace_stbit("state_encoder_ok",hdw->state_encoder_ok);
4250         return !0;
4251 }
4252
4253
4254 /* Evaluate whether or not state_encoder_config can change */
4255 static int state_eval_encoder_config(struct pvr2_hdw *hdw)
4256 {
4257         if (hdw->state_encoder_config) {
4258                 if (hdw->state_encoder_ok) {
4259                         if (hdw->state_pipeline_req &&
4260                             !hdw->state_pipeline_pause) return 0;
4261                 }
4262                 hdw->state_encoder_config = 0;
4263                 hdw->state_encoder_waitok = 0;
4264                 trace_stbit("state_encoder_waitok",hdw->state_encoder_waitok);
4265                 /* paranoia - solve race if timer just completed */
4266                 del_timer_sync(&hdw->encoder_wait_timer);
4267         } else {
4268                 if (!hdw->state_pathway_ok ||
4269                     (hdw->pathway_state != PVR2_PATHWAY_ANALOG) ||
4270                     !hdw->state_encoder_ok ||
4271                     !hdw->state_pipeline_idle ||
4272                     hdw->state_pipeline_pause ||
4273                     !hdw->state_pipeline_req ||
4274                     !hdw->state_pipeline_config) {
4275                         /* We must reset the enforced wait interval if
4276                            anything has happened that might have disturbed
4277                            the encoder.  This should be a rare case. */
4278                         if (timer_pending(&hdw->encoder_wait_timer)) {
4279                                 del_timer_sync(&hdw->encoder_wait_timer);
4280                         }
4281                         if (hdw->state_encoder_waitok) {
4282                                 /* Must clear the state - therefore we did
4283                                    something to a state bit and must also
4284                                    return true. */
4285                                 hdw->state_encoder_waitok = 0;
4286                                 trace_stbit("state_encoder_waitok",
4287                                             hdw->state_encoder_waitok);
4288                                 return !0;
4289                         }
4290                         return 0;
4291                 }
4292                 if (!hdw->state_encoder_waitok) {
4293                         if (!timer_pending(&hdw->encoder_wait_timer)) {
4294                                 /* waitok flag wasn't set and timer isn't
4295                                    running.  Check flag once more to avoid
4296                                    a race then start the timer.  This is
4297                                    the point when we measure out a minimal
4298                                    quiet interval before doing something to
4299                                    the encoder. */
4300                                 if (!hdw->state_encoder_waitok) {
4301                                         hdw->encoder_wait_timer.expires =
4302                                                 jiffies + msecs_to_jiffies(
4303                                                 TIME_MSEC_ENCODER_WAIT);
4304                                         add_timer(&hdw->encoder_wait_timer);
4305                                 }
4306                         }
4307                         /* We can't continue until we know we have been
4308                            quiet for the interval measured by this
4309                            timer. */
4310                         return 0;
4311                 }
4312                 pvr2_encoder_configure(hdw);
4313                 if (hdw->state_encoder_ok) hdw->state_encoder_config = !0;
4314         }
4315         trace_stbit("state_encoder_config",hdw->state_encoder_config);
4316         return !0;
4317 }
4318
4319
4320 /* Return true if the encoder should not be running. */
4321 static int state_check_disable_encoder_run(struct pvr2_hdw *hdw)
4322 {
4323         if (!hdw->state_encoder_ok) {
4324                 /* Encoder isn't healthy at the moment, so stop it. */
4325                 return !0;
4326         }
4327         if (!hdw->state_pathway_ok) {
4328                 /* Mode is not understood at the moment (i.e. it wants to
4329                    change), so encoder must be stopped. */
4330                 return !0;
4331         }
4332
4333         switch (hdw->pathway_state) {
4334         case PVR2_PATHWAY_ANALOG:
4335                 if (!hdw->state_decoder_run) {
4336                         /* We're in analog mode and the decoder is not
4337                            running; thus the encoder should be stopped as
4338                            well. */
4339                         return !0;
4340                 }
4341                 break;
4342         case PVR2_PATHWAY_DIGITAL:
4343                 if (hdw->state_encoder_runok) {
4344                         /* This is a funny case.  We're in digital mode so
4345                            really the encoder should be stopped.  However
4346                            if it really is running, only kill it after
4347                            runok has been set.  This gives a chance for the
4348                            onair quirk to function (encoder must run
4349                            briefly first, at least once, before onair
4350                            digital streaming can work). */
4351                         return !0;
4352                 }
4353                 break;
4354         default:
4355                 /* Unknown mode; so encoder should be stopped. */
4356                 return !0;
4357         }
4358
4359         /* If we get here, we haven't found a reason to stop the
4360            encoder. */
4361         return 0;
4362 }
4363
4364
4365 /* Return true if the encoder should be running. */
4366 static int state_check_enable_encoder_run(struct pvr2_hdw *hdw)
4367 {
4368         if (!hdw->state_encoder_ok) {
4369                 /* Don't run the encoder if it isn't healthy... */
4370                 return 0;
4371         }
4372         if (!hdw->state_pathway_ok) {
4373                 /* Don't run the encoder if we don't (yet) know what mode
4374                    we need to be in... */
4375                 return 0;
4376         }
4377
4378         switch (hdw->pathway_state) {
4379         case PVR2_PATHWAY_ANALOG:
4380                 if (hdw->state_decoder_run && hdw->state_decoder_ready) {
4381                         /* In analog mode, if the decoder is running, then
4382                            run the encoder. */
4383                         return !0;
4384                 }
4385                 break;
4386         case PVR2_PATHWAY_DIGITAL:
4387                 if ((hdw->hdw_desc->digital_control_scheme ==
4388                      PVR2_DIGITAL_SCHEME_ONAIR) &&
4389                     !hdw->state_encoder_runok) {
4390                         /* This is a quirk.  OnAir hardware won't stream
4391                            digital until the encoder has been run at least
4392                            once, for a minimal period of time (empiricially
4393                            measured to be 1/4 second).  So if we're on
4394                            OnAir hardware and the encoder has never been
4395                            run at all, then start the encoder.  Normal
4396                            state machine logic in the driver will
4397                            automatically handle the remaining bits. */
4398                         return !0;
4399                 }
4400                 break;
4401         default:
4402                 /* For completeness (unknown mode; encoder won't run ever) */
4403                 break;
4404         }
4405         /* If we get here, then we haven't found any reason to run the
4406            encoder, so don't run it. */
4407         return 0;
4408 }
4409
4410
4411 /* Evaluate whether or not state_encoder_run can change */
4412 static int state_eval_encoder_run(struct pvr2_hdw *hdw)
4413 {
4414         if (hdw->state_encoder_run) {
4415                 if (!state_check_disable_encoder_run(hdw)) return 0;
4416                 if (hdw->state_encoder_ok) {
4417                         del_timer_sync(&hdw->encoder_run_timer);
4418                         if (pvr2_encoder_stop(hdw) < 0) return !0;
4419                 }
4420                 hdw->state_encoder_run = 0;
4421         } else {
4422                 if (!state_check_enable_encoder_run(hdw)) return 0;
4423                 if (pvr2_encoder_start(hdw) < 0) return !0;
4424                 hdw->state_encoder_run = !0;
4425                 if (!hdw->state_encoder_runok) {
4426                         hdw->encoder_run_timer.expires = jiffies +
4427                                  msecs_to_jiffies(TIME_MSEC_ENCODER_OK);
4428                         add_timer(&hdw->encoder_run_timer);
4429                 }
4430         }
4431         trace_stbit("state_encoder_run",hdw->state_encoder_run);
4432         return !0;
4433 }
4434
4435
4436 /* Timeout function for quiescent timer. */
4437 static void pvr2_hdw_quiescent_timeout(unsigned long data)
4438 {
4439         struct pvr2_hdw *hdw = (struct pvr2_hdw *)data;
4440         hdw->state_decoder_quiescent = !0;
4441         trace_stbit("state_decoder_quiescent",hdw->state_decoder_quiescent);
4442         hdw->state_stale = !0;
4443         queue_work(hdw->workqueue,&hdw->workpoll);
4444 }
4445
4446
4447 /* Timeout function for decoder stabilization timer. */
4448 static void pvr2_hdw_decoder_stabilization_timeout(unsigned long data)
4449 {
4450         struct pvr2_hdw *hdw = (struct pvr2_hdw *)data;
4451         hdw->state_decoder_ready = !0;
4452         trace_stbit("state_decoder_ready", hdw->state_decoder_ready);
4453         hdw->state_stale = !0;
4454         queue_work(hdw->workqueue, &hdw->workpoll);
4455 }
4456
4457
4458 /* Timeout function for encoder wait timer. */
4459 static void pvr2_hdw_encoder_wait_timeout(unsigned long data)
4460 {
4461         struct pvr2_hdw *hdw = (struct pvr2_hdw *)data;
4462         hdw->state_encoder_waitok = !0;
4463         trace_stbit("state_encoder_waitok",hdw->state_encoder_waitok);
4464         hdw->state_stale = !0;
4465         queue_work(hdw->workqueue,&hdw->workpoll);
4466 }
4467
4468
4469 /* Timeout function for encoder run timer. */
4470 static void pvr2_hdw_encoder_run_timeout(unsigned long data)
4471 {
4472         struct pvr2_hdw *hdw = (struct pvr2_hdw *)data;
4473         if (!hdw->state_encoder_runok) {
4474                 hdw->state_encoder_runok = !0;
4475                 trace_stbit("state_encoder_runok",hdw->state_encoder_runok);
4476                 hdw->state_stale = !0;
4477                 queue_work(hdw->workqueue,&hdw->workpoll);
4478         }
4479 }
4480
4481
4482 /* Evaluate whether or not state_decoder_run can change */
4483 static int state_eval_decoder_run(struct pvr2_hdw *hdw)
4484 {
4485         if (hdw->state_decoder_run) {
4486                 if (hdw->state_encoder_ok) {
4487                         if (hdw->state_pipeline_req &&
4488                             !hdw->state_pipeline_pause &&
4489                             hdw->state_pathway_ok) return 0;
4490                 }
4491                 if (!hdw->flag_decoder_missed) {
4492                         pvr2_decoder_enable(hdw,0);
4493                 }
4494                 hdw->state_decoder_quiescent = 0;
4495                 hdw->state_decoder_run = 0;
4496                 /* paranoia - solve race if timer(s) just completed */
4497                 del_timer_sync(&hdw->quiescent_timer);
4498                 /* Kill the stabilization timer, in case we're killing the
4499                    encoder before the previous stabilization interval has
4500                    been properly timed. */
4501                 del_timer_sync(&hdw->decoder_stabilization_timer);
4502                 hdw->state_decoder_ready = 0;
4503         } else {
4504                 if (!hdw->state_decoder_quiescent) {
4505                         if (!timer_pending(&hdw->quiescent_timer)) {
4506                                 /* We don't do something about the
4507                                    quiescent timer until right here because
4508                                    we also want to catch cases where the
4509                                    decoder was already not running (like
4510                                    after initialization) as opposed to
4511                                    knowing that we had just stopped it.
4512                                    The second flag check is here to cover a
4513                                    race - the timer could have run and set
4514                                    this flag just after the previous check
4515                                    but before we did the pending check. */
4516                                 if (!hdw->state_decoder_quiescent) {
4517                                         hdw->quiescent_timer.expires =
4518                                                 jiffies + msecs_to_jiffies(
4519                                                 TIME_MSEC_DECODER_WAIT);
4520                                         add_timer(&hdw->quiescent_timer);
4521                                 }
4522                         }
4523                         /* Don't allow decoder to start again until it has
4524                            been quiesced first.  This little detail should
4525                            hopefully further stabilize the encoder. */
4526                         return 0;
4527                 }
4528                 if (!hdw->state_pathway_ok ||
4529                     (hdw->pathway_state != PVR2_PATHWAY_ANALOG) ||
4530                     !hdw->state_pipeline_req ||
4531                     hdw->state_pipeline_pause ||
4532                     !hdw->state_pipeline_config ||
4533                     !hdw->state_encoder_config ||
4534                     !hdw->state_encoder_ok) return 0;
4535                 del_timer_sync(&hdw->quiescent_timer);
4536                 if (hdw->flag_decoder_missed) return 0;
4537                 if (pvr2_decoder_enable(hdw,!0) < 0) return 0;
4538                 hdw->state_decoder_quiescent = 0;
4539                 hdw->state_decoder_ready = 0;
4540                 hdw->state_decoder_run = !0;
4541                 if (hdw->decoder_client_id == PVR2_CLIENT_ID_SAA7115) {
4542                         hdw->decoder_stabilization_timer.expires =
4543                                 jiffies + msecs_to_jiffies(
4544                                 TIME_MSEC_DECODER_STABILIZATION_WAIT);
4545                         add_timer(&hdw->decoder_stabilization_timer);
4546                 } else {
4547                         hdw->state_decoder_ready = !0;
4548                 }
4549         }
4550         trace_stbit("state_decoder_quiescent",hdw->state_decoder_quiescent);
4551         trace_stbit("state_decoder_run",hdw->state_decoder_run);
4552         trace_stbit("state_decoder_ready", hdw->state_decoder_ready);
4553         return !0;
4554 }
4555
4556
4557 /* Evaluate whether or not state_usbstream_run can change */
4558 static int state_eval_usbstream_run(struct pvr2_hdw *hdw)
4559 {
4560         if (hdw->state_usbstream_run) {
4561                 int fl = !0;
4562                 if (hdw->pathway_state == PVR2_PATHWAY_ANALOG) {
4563                         fl = (hdw->state_encoder_ok &&
4564                               hdw->state_encoder_run);
4565                 } else if ((hdw->pathway_state == PVR2_PATHWAY_DIGITAL) &&
4566                            (hdw->hdw_desc->flag_digital_requires_cx23416)) {
4567                         fl = hdw->state_encoder_ok;
4568                 }
4569                 if (fl &&
4570                     hdw->state_pipeline_req &&
4571                     !hdw->state_pipeline_pause &&
4572                     hdw->state_pathway_ok) {
4573                         return 0;
4574                 }
4575                 pvr2_hdw_cmd_usbstream(hdw,0);
4576                 hdw->state_usbstream_run = 0;
4577         } else {
4578                 if (!hdw->state_pipeline_req ||
4579                     hdw->state_pipeline_pause ||
4580                     !hdw->state_pathway_ok) return 0;
4581                 if (hdw->pathway_state == PVR2_PATHWAY_ANALOG) {
4582                         if (!hdw->state_encoder_ok ||
4583                             !hdw->state_encoder_run) return 0;
4584                 } else if ((hdw->pathway_state == PVR2_PATHWAY_DIGITAL) &&
4585                            (hdw->hdw_desc->flag_digital_requires_cx23416)) {
4586                         if (!hdw->state_encoder_ok) return 0;
4587                         if (hdw->state_encoder_run) return 0;
4588                         if (hdw->hdw_desc->digital_control_scheme ==
4589                             PVR2_DIGITAL_SCHEME_ONAIR) {
4590                                 /* OnAir digital receivers won't stream
4591                                    unless the analog encoder has run first.
4592                                    Why?  I have no idea.  But don't even
4593                                    try until we know the analog side is
4594                                    known to have run. */
4595                                 if (!hdw->state_encoder_runok) return 0;
4596                         }
4597                 }
4598                 if (pvr2_hdw_cmd_usbstream(hdw,!0) < 0) return 0;
4599                 hdw->state_usbstream_run = !0;
4600         }
4601         trace_stbit("state_usbstream_run",hdw->state_usbstream_run);
4602         return !0;
4603 }
4604
4605
4606 /* Attempt to configure pipeline, if needed */
4607 static int state_eval_pipeline_config(struct pvr2_hdw *hdw)
4608 {
4609         if (hdw->state_pipeline_config ||
4610             hdw->state_pipeline_pause) return 0;
4611         pvr2_hdw_commit_execute(hdw);
4612         return !0;
4613 }
4614
4615
4616 /* Update pipeline idle and pipeline pause tracking states based on other
4617    inputs.  This must be called whenever the other relevant inputs have
4618    changed. */
4619 static int state_update_pipeline_state(struct pvr2_hdw *hdw)
4620 {
4621         unsigned int st;
4622         int updatedFl = 0;
4623         /* Update pipeline state */
4624         st = !(hdw->state_encoder_run ||
4625                hdw->state_decoder_run ||
4626                hdw->state_usbstream_run ||
4627                (!hdw->state_decoder_quiescent));
4628         if (!st != !hdw->state_pipeline_idle) {
4629                 hdw->state_pipeline_idle = st;
4630                 updatedFl = !0;
4631         }
4632         if (hdw->state_pipeline_idle && hdw->state_pipeline_pause) {
4633                 hdw->state_pipeline_pause = 0;
4634                 updatedFl = !0;
4635         }
4636         return updatedFl;
4637 }
4638
4639
4640 typedef int (*state_eval_func)(struct pvr2_hdw *);
4641
4642 /* Set of functions to be run to evaluate various states in the driver. */
4643 static const state_eval_func eval_funcs[] = {
4644         state_eval_pathway_ok,
4645         state_eval_pipeline_config,
4646         state_eval_encoder_ok,
4647         state_eval_encoder_config,
4648         state_eval_decoder_run,
4649         state_eval_encoder_run,
4650         state_eval_usbstream_run,
4651 };
4652
4653
4654 /* Process various states and return true if we did anything interesting. */
4655 static int pvr2_hdw_state_update(struct pvr2_hdw *hdw)
4656 {
4657         unsigned int i;
4658         int state_updated = 0;
4659         int check_flag;
4660
4661         if (!hdw->state_stale) return 0;
4662         if ((hdw->fw1_state != FW1_STATE_OK) ||
4663             !hdw->flag_ok) {
4664                 hdw->state_stale = 0;
4665                 return !0;
4666         }
4667         /* This loop is the heart of the entire driver.  It keeps trying to
4668            evaluate various bits of driver state until nothing changes for
4669            one full iteration.  Each "bit of state" tracks some global
4670            aspect of the driver, e.g. whether decoder should run, if
4671            pipeline is configured, usb streaming is on, etc.  We separately
4672            evaluate each of those questions based on other driver state to
4673            arrive at the correct running configuration. */
4674         do {
4675                 check_flag = 0;
4676                 state_update_pipeline_state(hdw);
4677                 /* Iterate over each bit of state */
4678                 for (i = 0; (i<ARRAY_SIZE(eval_funcs)) && hdw->flag_ok; i++) {
4679                         if ((*eval_funcs[i])(hdw)) {
4680                                 check_flag = !0;
4681                                 state_updated = !0;
4682                                 state_update_pipeline_state(hdw);
4683                         }
4684                 }
4685         } while (check_flag && hdw->flag_ok);
4686         hdw->state_stale = 0;
4687         trace_stbit("state_stale",hdw->state_stale);
4688         return state_updated;
4689 }
4690
4691
4692 static unsigned int print_input_mask(unsigned int msk,
4693                                      char *buf,unsigned int acnt)
4694 {
4695         unsigned int idx,ccnt;
4696         unsigned int tcnt = 0;
4697         for (idx = 0; idx < ARRAY_SIZE(control_values_input); idx++) {
4698                 if (!((1 << idx) & msk)) continue;
4699                 ccnt = scnprintf(buf+tcnt,
4700                                  acnt-tcnt,
4701                                  "%s%s",
4702                                  (tcnt ? ", " : ""),
4703                                  control_values_input[idx]);
4704                 tcnt += ccnt;
4705         }
4706         return tcnt;
4707 }
4708
4709
4710 static const char *pvr2_pathway_state_name(int id)
4711 {
4712         switch (id) {
4713         case PVR2_PATHWAY_ANALOG: return "analog";
4714         case PVR2_PATHWAY_DIGITAL: return "digital";
4715         default: return "unknown";
4716         }
4717 }
4718
4719
4720 static unsigned int pvr2_hdw_report_unlocked(struct pvr2_hdw *hdw,int which,
4721                                              char *buf,unsigned int acnt)
4722 {
4723         switch (which) {
4724         case 0:
4725                 return scnprintf(
4726                         buf,acnt,
4727                         "driver:%s%s%s%s%s <mode=%s>",
4728                         (hdw->flag_ok ? " <ok>" : " <fail>"),
4729                         (hdw->flag_init_ok ? " <init>" : " <uninitialized>"),
4730                         (hdw->flag_disconnected ? " <disconnected>" :
4731                          " <connected>"),
4732                         (hdw->flag_tripped ? " <tripped>" : ""),
4733                         (hdw->flag_decoder_missed ? " <no decoder>" : ""),
4734                         pvr2_pathway_state_name(hdw->pathway_state));
4735
4736         case 1:
4737                 return scnprintf(
4738                         buf,acnt,
4739                         "pipeline:%s%s%s%s",
4740                         (hdw->state_pipeline_idle ? " <idle>" : ""),
4741                         (hdw->state_pipeline_config ?
4742                          " <configok>" : " <stale>"),
4743                         (hdw->state_pipeline_req ? " <req>" : ""),
4744                         (hdw->state_pipeline_pause ? " <pause>" : ""));
4745         case 2:
4746                 return scnprintf(
4747                         buf,acnt,
4748                         "worker:%s%s%s%s%s%s%s",
4749                         (hdw->state_decoder_run ?
4750                          (hdw->state_decoder_ready ?
4751                           "<decode:run>" : " <decode:start>") :
4752                          (hdw->state_decoder_quiescent ?
4753                           "" : " <decode:stop>")),
4754                         (hdw->state_decoder_quiescent ?
4755                          " <decode:quiescent>" : ""),
4756                         (hdw->state_encoder_ok ?
4757                          "" : " <encode:init>"),
4758                         (hdw->state_encoder_run ?
4759                          (hdw->state_encoder_runok ?
4760                           " <encode:run>" :
4761                           " <encode:firstrun>") :
4762                          (hdw->state_encoder_runok ?
4763                           " <encode:stop>" :
4764                           " <encode:virgin>")),
4765                         (hdw->state_encoder_config ?
4766                          " <encode:configok>" :
4767                          (hdw->state_encoder_waitok ?
4768                           "" : " <encode:waitok>")),
4769                         (hdw->state_usbstream_run ?
4770                          " <usb:run>" : " <usb:stop>"),
4771                         (hdw->state_pathway_ok ?
4772                          " <pathway:ok>" : ""));
4773         case 3:
4774                 return scnprintf(
4775                         buf,acnt,
4776                         "state: %s",
4777                         pvr2_get_state_name(hdw->master_state));
4778         case 4: {
4779                 unsigned int tcnt = 0;
4780                 unsigned int ccnt;
4781
4782                 ccnt = scnprintf(buf,
4783                                  acnt,
4784                                  "Hardware supported inputs: ");
4785                 tcnt += ccnt;
4786                 tcnt += print_input_mask(hdw->input_avail_mask,
4787                                          buf+tcnt,
4788                                          acnt-tcnt);
4789                 if (hdw->input_avail_mask != hdw->input_allowed_mask) {
4790                         ccnt = scnprintf(buf+tcnt,
4791                                          acnt-tcnt,
4792                                          "; allowed inputs: ");
4793                         tcnt += ccnt;
4794                         tcnt += print_input_mask(hdw->input_allowed_mask,
4795                                                  buf+tcnt,
4796                                                  acnt-tcnt);
4797                 }
4798                 return tcnt;
4799         }
4800         case 5: {
4801                 struct pvr2_stream_stats stats;
4802                 if (!hdw->vid_stream) break;
4803                 pvr2_stream_get_stats(hdw->vid_stream,
4804                                       &stats,
4805                                       0);
4806                 return scnprintf(
4807                         buf,acnt,
4808                         "Bytes streamed=%u"
4809                         " URBs: queued=%u idle=%u ready=%u"
4810                         " processed=%u failed=%u",
4811                         stats.bytes_processed,
4812                         stats.buffers_in_queue,
4813                         stats.buffers_in_idle,
4814                         stats.buffers_in_ready,
4815                         stats.buffers_processed,
4816                         stats.buffers_failed);
4817         }
4818         case 6: {
4819                 unsigned int id = hdw->ir_scheme_active;
4820                 return scnprintf(buf, acnt, "ir scheme: id=%d %s", id,
4821                                  (id >= ARRAY_SIZE(ir_scheme_names) ?
4822                                   "?" : ir_scheme_names[id]));
4823         }
4824         default: break;
4825         }
4826         return 0;
4827 }
4828
4829
4830 /* Generate report containing info about attached sub-devices and attached
4831    i2c clients, including an indication of which attached i2c clients are
4832    actually sub-devices. */
4833 static unsigned int pvr2_hdw_report_clients(struct pvr2_hdw *hdw,
4834                                             char *buf, unsigned int acnt)
4835 {
4836         struct v4l2_subdev *sd;
4837         unsigned int tcnt = 0;
4838         unsigned int ccnt;
4839         struct i2c_client *client;
4840         const char *p;
4841         unsigned int id;
4842
4843         ccnt = scnprintf(buf, acnt, "Associated v4l2-subdev drivers and I2C clients:\n");
4844         tcnt += ccnt;
4845         v4l2_device_for_each_subdev(sd, &hdw->v4l2_dev) {
4846                 id = sd->grp_id;
4847                 p = NULL;
4848                 if (id < ARRAY_SIZE(module_names)) p = module_names[id];
4849                 if (p) {
4850                         ccnt = scnprintf(buf + tcnt, acnt - tcnt, "  %s:", p);
4851                         tcnt += ccnt;
4852                 } else {
4853                         ccnt = scnprintf(buf + tcnt, acnt - tcnt,
4854                                          "  (unknown id=%u):", id);
4855                         tcnt += ccnt;
4856                 }
4857                 client = v4l2_get_subdevdata(sd);
4858                 if (client) {
4859                         ccnt = scnprintf(buf + tcnt, acnt - tcnt,
4860                                          " %s @ %02x\n", client->name,
4861                                          client->addr);
4862                         tcnt += ccnt;
4863                 } else {
4864                         ccnt = scnprintf(buf + tcnt, acnt - tcnt,
4865                                          " no i2c client\n");
4866                         tcnt += ccnt;
4867                 }
4868         }
4869         return tcnt;
4870 }
4871
4872
4873 unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw,
4874                                    char *buf,unsigned int acnt)
4875 {
4876         unsigned int bcnt,ccnt,idx;
4877         bcnt = 0;
4878         LOCK_TAKE(hdw->big_lock);
4879         for (idx = 0; ; idx++) {
4880                 ccnt = pvr2_hdw_report_unlocked(hdw,idx,buf,acnt);
4881                 if (!ccnt) break;
4882                 bcnt += ccnt; acnt -= ccnt; buf += ccnt;
4883                 if (!acnt) break;
4884                 buf[0] = '\n'; ccnt = 1;
4885                 bcnt += ccnt; acnt -= ccnt; buf += ccnt;
4886         }
4887         ccnt = pvr2_hdw_report_clients(hdw, buf, acnt);
4888         bcnt += ccnt; acnt -= ccnt; buf += ccnt;
4889         LOCK_GIVE(hdw->big_lock);
4890         return bcnt;
4891 }
4892
4893
4894 static void pvr2_hdw_state_log_state(struct pvr2_hdw *hdw)
4895 {
4896         char buf[256];
4897         unsigned int idx, ccnt;
4898         unsigned int lcnt, ucnt;
4899
4900         for (idx = 0; ; idx++) {
4901                 ccnt = pvr2_hdw_report_unlocked(hdw,idx,buf,sizeof(buf));
4902                 if (!ccnt) break;
4903                 printk(KERN_INFO "%s %.*s\n",hdw->name,ccnt,buf);
4904         }
4905         ccnt = pvr2_hdw_report_clients(hdw, buf, sizeof(buf));
4906         ucnt = 0;
4907         while (ucnt < ccnt) {
4908                 lcnt = 0;
4909                 while ((lcnt + ucnt < ccnt) && (buf[lcnt + ucnt] != '\n')) {
4910                         lcnt++;
4911                 }
4912                 printk(KERN_INFO "%s %.*s\n", hdw->name, lcnt, buf + ucnt);
4913                 ucnt += lcnt + 1;
4914         }
4915 }
4916
4917
4918 /* Evaluate and update the driver's current state, taking various actions
4919    as appropriate for the update. */
4920 static int pvr2_hdw_state_eval(struct pvr2_hdw *hdw)
4921 {
4922         unsigned int st;
4923         int state_updated = 0;
4924         int callback_flag = 0;
4925         int analog_mode;
4926
4927         pvr2_trace(PVR2_TRACE_STBITS,
4928                    "Drive state check START");
4929         if (pvrusb2_debug & PVR2_TRACE_STBITS) {
4930                 pvr2_hdw_state_log_state(hdw);
4931         }
4932
4933         /* Process all state and get back over disposition */
4934         state_updated = pvr2_hdw_state_update(hdw);
4935
4936         analog_mode = (hdw->pathway_state != PVR2_PATHWAY_DIGITAL);
4937
4938         /* Update master state based upon all other states. */
4939         if (!hdw->flag_ok) {
4940                 st = PVR2_STATE_DEAD;
4941         } else if (hdw->fw1_state != FW1_STATE_OK) {
4942                 st = PVR2_STATE_COLD;
4943         } else if ((analog_mode ||
4944                     hdw->hdw_desc->flag_digital_requires_cx23416) &&
4945                    !hdw->state_encoder_ok) {
4946                 st = PVR2_STATE_WARM;
4947         } else if (hdw->flag_tripped ||
4948                    (analog_mode && hdw->flag_decoder_missed)) {
4949                 st = PVR2_STATE_ERROR;
4950         } else if (hdw->state_usbstream_run &&
4951                    (!analog_mode ||
4952                     (hdw->state_encoder_run && hdw->state_decoder_run))) {
4953                 st = PVR2_STATE_RUN;
4954         } else {
4955                 st = PVR2_STATE_READY;
4956         }
4957         if (hdw->master_state != st) {
4958                 pvr2_trace(PVR2_TRACE_STATE,
4959                            "Device state change from %s to %s",
4960                            pvr2_get_state_name(hdw->master_state),
4961                            pvr2_get_state_name(st));
4962                 pvr2_led_ctrl(hdw,st == PVR2_STATE_RUN);
4963                 hdw->master_state = st;
4964                 state_updated = !0;
4965                 callback_flag = !0;
4966         }
4967         if (state_updated) {
4968                 /* Trigger anyone waiting on any state changes here. */
4969                 wake_up(&hdw->state_wait_data);
4970         }
4971
4972         if (pvrusb2_debug & PVR2_TRACE_STBITS) {
4973                 pvr2_hdw_state_log_state(hdw);
4974         }
4975         pvr2_trace(PVR2_TRACE_STBITS,
4976                    "Drive state check DONE callback=%d",callback_flag);
4977
4978         return callback_flag;
4979 }
4980
4981
4982 /* Cause kernel thread to check / update driver state */
4983 static void pvr2_hdw_state_sched(struct pvr2_hdw *hdw)
4984 {
4985         if (hdw->state_stale) return;
4986         hdw->state_stale = !0;
4987         trace_stbit("state_stale",hdw->state_stale);
4988         queue_work(hdw->workqueue,&hdw->workpoll);
4989 }
4990
4991
4992 int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *dp)
4993 {
4994         return pvr2_read_register(hdw,PVR2_GPIO_DIR,dp);
4995 }
4996
4997
4998 int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *dp)
4999 {
5000         return pvr2_read_register(hdw,PVR2_GPIO_OUT,dp);
5001 }
5002
5003
5004 int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *dp)
5005 {
5006         return pvr2_read_register(hdw,PVR2_GPIO_IN,dp);
5007 }
5008
5009
5010 int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val)
5011 {
5012         u32 cval,nval;
5013         int ret;
5014         if (~msk) {
5015                 ret = pvr2_read_register(hdw,PVR2_GPIO_DIR,&cval);
5016                 if (ret) return ret;
5017                 nval = (cval & ~msk) | (val & msk);
5018                 pvr2_trace(PVR2_TRACE_GPIO,
5019                            "GPIO direction changing 0x%x:0x%x"
5020                            " from 0x%x to 0x%x",
5021                            msk,val,cval,nval);
5022         } else {
5023                 nval = val;
5024                 pvr2_trace(PVR2_TRACE_GPIO,
5025                            "GPIO direction changing to 0x%x",nval);
5026         }
5027         return pvr2_write_register(hdw,PVR2_GPIO_DIR,nval);
5028 }
5029
5030
5031 int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val)
5032 {
5033         u32 cval,nval;
5034         int ret;
5035         if (~msk) {
5036                 ret = pvr2_read_register(hdw,PVR2_GPIO_OUT,&cval);
5037                 if (ret) return ret;
5038                 nval = (cval & ~msk) | (val & msk);
5039                 pvr2_trace(PVR2_TRACE_GPIO,
5040                            "GPIO output changing 0x%x:0x%x from 0x%x to 0x%x",
5041                            msk,val,cval,nval);
5042         } else {
5043                 nval = val;
5044                 pvr2_trace(PVR2_TRACE_GPIO,
5045                            "GPIO output changing to 0x%x",nval);
5046         }
5047         return pvr2_write_register(hdw,PVR2_GPIO_OUT,nval);
5048 }
5049
5050
5051 void pvr2_hdw_status_poll(struct pvr2_hdw *hdw)
5052 {
5053         struct v4l2_tuner *vtp = &hdw->tuner_signal_info;
5054         memset(vtp, 0, sizeof(*vtp));
5055         vtp->type = (hdw->input_val == PVR2_CVAL_INPUT_RADIO) ?
5056                 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
5057         hdw->tuner_signal_stale = 0;
5058         /* Note: There apparently is no replacement for VIDIOC_CROPCAP
5059            using v4l2-subdev - therefore we can't support that AT ALL right
5060            now.  (Of course, no sub-drivers seem to implement it either.
5061            But now it's a a chicken and egg problem...) */
5062         v4l2_device_call_all(&hdw->v4l2_dev, 0, tuner, g_tuner, vtp);
5063         pvr2_trace(PVR2_TRACE_CHIPS, "subdev status poll"
5064                    " type=%u strength=%u audio=0x%x cap=0x%x"
5065                    " low=%u hi=%u",
5066                    vtp->type,
5067                    vtp->signal, vtp->rxsubchans, vtp->capability,
5068                    vtp->rangelow, vtp->rangehigh);
5069
5070         /* We have to do this to avoid getting into constant polling if
5071            there's nobody to answer a poll of cropcap info. */
5072         hdw->cropcap_stale = 0;
5073 }
5074
5075
5076 unsigned int pvr2_hdw_get_input_available(struct pvr2_hdw *hdw)
5077 {
5078         return hdw->input_avail_mask;
5079 }
5080
5081
5082 unsigned int pvr2_hdw_get_input_allowed(struct pvr2_hdw *hdw)
5083 {
5084         return hdw->input_allowed_mask;
5085 }
5086
5087
5088 static int pvr2_hdw_set_input(struct pvr2_hdw *hdw,int v)
5089 {
5090         if (hdw->input_val != v) {
5091                 hdw->input_val = v;
5092                 hdw->input_dirty = !0;
5093         }
5094
5095         /* Handle side effects - if we switch to a mode that needs the RF
5096            tuner, then select the right frequency choice as well and mark
5097            it dirty. */
5098         if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) {
5099                 hdw->freqSelector = 0;
5100                 hdw->freqDirty = !0;
5101         } else if ((hdw->input_val == PVR2_CVAL_INPUT_TV) ||
5102                    (hdw->input_val == PVR2_CVAL_INPUT_DTV)) {
5103                 hdw->freqSelector = 1;
5104                 hdw->freqDirty = !0;
5105         }
5106         return 0;
5107 }
5108
5109
5110 int pvr2_hdw_set_input_allowed(struct pvr2_hdw *hdw,
5111                                unsigned int change_mask,
5112                                unsigned int change_val)
5113 {
5114         int ret = 0;
5115         unsigned int nv,m,idx;
5116         LOCK_TAKE(hdw->big_lock);
5117         do {
5118                 nv = hdw->input_allowed_mask & ~change_mask;
5119                 nv |= (change_val & change_mask);
5120                 nv &= hdw->input_avail_mask;
5121                 if (!nv) {
5122                         /* No legal modes left; return error instead. */
5123                         ret = -EPERM;
5124                         break;
5125                 }
5126                 hdw->input_allowed_mask = nv;
5127                 if ((1 << hdw->input_val) & hdw->input_allowed_mask) {
5128                         /* Current mode is still in the allowed mask, so
5129                            we're done. */
5130                         break;
5131                 }
5132                 /* Select and switch to a mode that is still in the allowed
5133                    mask */
5134                 if (!hdw->input_allowed_mask) {
5135                         /* Nothing legal; give up */
5136                         break;
5137                 }
5138                 m = hdw->input_allowed_mask;
5139                 for (idx = 0; idx < (sizeof(m) << 3); idx++) {
5140                         if (!((1 << idx) & m)) continue;
5141                         pvr2_hdw_set_input(hdw,idx);
5142                         break;
5143                 }
5144         } while (0);
5145         LOCK_GIVE(hdw->big_lock);
5146         return ret;
5147 }
5148
5149
5150 /* Find I2C address of eeprom */
5151 static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw)
5152 {
5153         int result;
5154         LOCK_TAKE(hdw->ctl_lock); do {
5155                 hdw->cmd_buffer[0] = FX2CMD_GET_EEPROM_ADDR;
5156                 result = pvr2_send_request(hdw,
5157                                            hdw->cmd_buffer,1,
5158                                            hdw->cmd_buffer,1);
5159                 if (result < 0) break;
5160                 result = hdw->cmd_buffer[0];
5161         } while(0); LOCK_GIVE(hdw->ctl_lock);
5162         return result;
5163 }