kernel/drivers/media/dvb-frontends/cx24117.c

   1 /*
   2     Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
   3
   4     Copyright (C) 2013 Luis Alves <ljalvs@gmail.com>
   5         July, 6th 2013
   6             First release based on cx24116 driver by:
   7             Steven Toth and Georg Acher, Darron Broad, Igor Liplianin
   8             Cards currently supported:
   9                 TBS6980 - Dual DVBS/S2 PCIe card
  10                 TBS6981 - Dual DVBS/S2 PCIe card
  11
  12     This program is free software; you can redistribute it and/or modify
  13     it under the terms of the GNU General Public License as published by
  14     the Free Software Foundation; either version 2 of the License, or
  15     (at your option) any later version.
  16
  17     This program is distributed in the hope that it will be useful,
  18     but WITHOUT ANY WARRANTY; without even the implied warranty of
  19     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20     GNU General Public License for more details.
  21
  22     You should have received a copy of the GNU General Public License
  23     along with this program; if not, write to the Free Software
  24     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25 */
  26
  27 #include <linux/slab.h>
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/init.h>
  32 #include <linux/firmware.h>
  33
  34 #include "tuner-i2c.h"
  35 #include "dvb_frontend.h"
  36 #include "cx24117.h"
  37
  38
  39 #define CX24117_DEFAULT_FIRMWARE "dvb-fe-cx24117.fw"
  40 #define CX24117_SEARCH_RANGE_KHZ 5000
  41
  42 /* known registers */
  43 #define CX24117_REG_COMMAND      (0x00)      /* command buffer */
  44 #define CX24117_REG_EXECUTE      (0x1f)      /* execute command */
  45
  46 #define CX24117_REG_FREQ3_0      (0x34)      /* frequency */
  47 #define CX24117_REG_FREQ2_0      (0x35)
  48 #define CX24117_REG_FREQ1_0      (0x36)
  49 #define CX24117_REG_STATE0       (0x39)
  50 #define CX24117_REG_SSTATUS0     (0x3a)      /* demod0 signal high / status */
  51 #define CX24117_REG_SIGNAL0      (0x3b)
  52 #define CX24117_REG_FREQ5_0      (0x3c)      /* +-freq */
  53 #define CX24117_REG_FREQ6_0      (0x3d)
  54 #define CX24117_REG_SRATE2_0     (0x3e)      /* +- 1000 * srate */
  55 #define CX24117_REG_SRATE1_0     (0x3f)
  56 #define CX24117_REG_QUALITY2_0   (0x40)
  57 #define CX24117_REG_QUALITY1_0   (0x41)
  58
  59 #define CX24117_REG_BER4_0       (0x47)
  60 #define CX24117_REG_BER3_0       (0x48)
  61 #define CX24117_REG_BER2_0       (0x49)
  62 #define CX24117_REG_BER1_0       (0x4a)
  63 #define CX24117_REG_DVBS_UCB2_0  (0x4b)
  64 #define CX24117_REG_DVBS_UCB1_0  (0x4c)
  65 #define CX24117_REG_DVBS2_UCB2_0 (0x50)
  66 #define CX24117_REG_DVBS2_UCB1_0 (0x51)
  67 #define CX24117_REG_QSTATUS0     (0x93)
  68 #define CX24117_REG_CLKDIV0      (0xe6)
  69 #define CX24117_REG_RATEDIV0     (0xf0)
  70
  71
  72 #define CX24117_REG_FREQ3_1      (0x55)      /* frequency */
  73 #define CX24117_REG_FREQ2_1      (0x56)
  74 #define CX24117_REG_FREQ1_1      (0x57)
  75 #define CX24117_REG_STATE1       (0x5a)
  76 #define CX24117_REG_SSTATUS1     (0x5b)      /* demod1 signal high / status */
  77 #define CX24117_REG_SIGNAL1      (0x5c)
  78 #define CX24117_REG_FREQ5_1      (0x5d)      /* +- freq */
  79 #define CX24117_REG_FREQ4_1      (0x5e)
  80 #define CX24117_REG_SRATE2_1     (0x5f)
  81 #define CX24117_REG_SRATE1_1     (0x60)
  82 #define CX24117_REG_QUALITY2_1   (0x61)
  83 #define CX24117_REG_QUALITY1_1   (0x62)
  84 #define CX24117_REG_BER4_1       (0x68)
  85 #define CX24117_REG_BER3_1       (0x69)
  86 #define CX24117_REG_BER2_1       (0x6a)
  87 #define CX24117_REG_BER1_1       (0x6b)
  88 #define CX24117_REG_DVBS_UCB2_1  (0x6c)
  89 #define CX24117_REG_DVBS_UCB1_1  (0x6d)
  90 #define CX24117_REG_DVBS2_UCB2_1 (0x71)
  91 #define CX24117_REG_DVBS2_UCB1_1 (0x72)
  92 #define CX24117_REG_QSTATUS1     (0x9f)
  93 #define CX24117_REG_CLKDIV1      (0xe7)
  94 #define CX24117_REG_RATEDIV1     (0xf1)
  95
  96
  97 /* arg buffer size */
  98 #define CX24117_ARGLEN       (0x1e)
  99
 100 /* rolloff */
 101 #define CX24117_ROLLOFF_020  (0x00)
 102 #define CX24117_ROLLOFF_025  (0x01)
 103 #define CX24117_ROLLOFF_035  (0x02)
 104
 105 /* pilot bit */
 106 #define CX24117_PILOT_OFF    (0x00)
 107 #define CX24117_PILOT_ON     (0x40)
 108 #define CX24117_PILOT_AUTO   (0x80)
 109
 110 /* signal status */
 111 #define CX24117_HAS_SIGNAL   (0x01)
 112 #define CX24117_HAS_CARRIER  (0x02)
 113 #define CX24117_HAS_VITERBI  (0x04)
 114 #define CX24117_HAS_SYNCLOCK (0x08)
 115 #define CX24117_STATUS_MASK  (0x0f)
 116 #define CX24117_SIGNAL_MASK  (0xc0)
 117
 118
 119 /* arg offset for DiSEqC */
 120 #define CX24117_DISEQC_DEMOD  (1)
 121 #define CX24117_DISEQC_BURST  (2)
 122 #define CX24117_DISEQC_ARG3_2 (3)   /* unknown value=2 */
 123 #define CX24117_DISEQC_ARG4_0 (4)   /* unknown value=0 */
 124 #define CX24117_DISEQC_ARG5_0 (5)   /* unknown value=0 */
 125 #define CX24117_DISEQC_MSGLEN (6)
 126 #define CX24117_DISEQC_MSGOFS (7)
 127
 128 /* DiSEqC burst */
 129 #define CX24117_DISEQC_MINI_A (0)
 130 #define CX24117_DISEQC_MINI_B (1)
 131
 132
 133 #define CX24117_PNE     (0) /* 0 disabled / 2 enabled */
 134 #define CX24117_OCC     (1) /* 0 disabled / 1 enabled */
 135
 136
 137 enum cmds {
 138         CMD_SET_VCOFREQ    = 0x10,
 139         CMD_TUNEREQUEST    = 0x11,
 140         CMD_GLOBAL_MPEGCFG = 0x13,
 141         CMD_MPEGCFG        = 0x14,
 142         CMD_TUNERINIT      = 0x15,
 143         CMD_GET_SRATE      = 0x18,
 144         CMD_SET_GOLDCODE   = 0x19,
 145         CMD_GET_AGCACC     = 0x1a,
 146         CMD_DEMODINIT      = 0x1b,
 147         CMD_GETCTLACC      = 0x1c,
 148
 149         CMD_LNBCONFIG      = 0x20,
 150         CMD_LNBSEND        = 0x21,
 151         CMD_LNBDCLEVEL     = 0x22,
 152         CMD_LNBPCBCONFIG   = 0x23,
 153         CMD_LNBSENDTONEBST = 0x24,
 154         CMD_LNBUPDREPLY    = 0x25,
 155
 156         CMD_SET_GPIOMODE   = 0x30,
 157         CMD_SET_GPIOEN     = 0x31,
 158         CMD_SET_GPIODIR    = 0x32,
 159         CMD_SET_GPIOOUT    = 0x33,
 160         CMD_ENABLERSCORR   = 0x34,
 161         CMD_FWVERSION      = 0x35,
 162         CMD_SET_SLEEPMODE  = 0x36,
 163         CMD_BERCTRL        = 0x3c,
 164         CMD_EVENTCTRL      = 0x3d,
 165 };
 166
 167 static LIST_HEAD(hybrid_tuner_instance_list);
 168 static DEFINE_MUTEX(cx24117_list_mutex);
 169
 170 /* The Demod/Tuner can't easily provide these, we cache them */
 171 struct cx24117_tuning {
 172         u32 frequency;
 173         u32 symbol_rate;
 174         enum fe_spectral_inversion inversion;
 175         enum fe_code_rate fec;
 176
 177         enum fe_delivery_system delsys;
 178         enum fe_modulation modulation;
 179         enum fe_pilot pilot;
 180         enum fe_rolloff rolloff;
 181
 182         /* Demod values */
 183         u8 fec_val;
 184         u8 fec_mask;
 185         u8 inversion_val;
 186         u8 pilot_val;
 187         u8 rolloff_val;
 188 };
 189
 190 /* Basic commands that are sent to the firmware */
 191 struct cx24117_cmd {
 192         u8 len;
 193         u8 args[CX24117_ARGLEN];
 194 };
 195
 196 /* common to both fe's */
 197 struct cx24117_priv {
 198         u8 demod_address;
 199         struct i2c_adapter *i2c;
 200         u8 skip_fw_load;
 201         struct mutex fe_lock;
 202
 203         /* Used for sharing this struct between demods */
 204         struct tuner_i2c_props i2c_props;
 205         struct list_head hybrid_tuner_instance_list;
 206 };
 207
 208 /* one per each fe */
 209 struct cx24117_state {
 210         struct cx24117_priv *priv;
 211         struct dvb_frontend frontend;
 212
 213         struct cx24117_tuning dcur;
 214         struct cx24117_tuning dnxt;
 215         struct cx24117_cmd dsec_cmd;
 216
 217         int demod;
 218 };
 219
 220 /* modfec (modulation and FEC) lookup table */
 221 /* Check cx24116.c for a detailed description of each field */
 222 static struct cx24117_modfec {
 223         enum fe_delivery_system delivery_system;
 224         enum fe_modulation modulation;
 225         enum fe_code_rate fec;
 226         u8 mask;        /* In DVBS mode this is used to autodetect */
 227         u8 val;         /* Passed to the firmware to indicate mode selection */
 228 } cx24117_modfec_modes[] = {
 229         /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
 230
 231         /*mod   fec       mask  val */
 232         { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
 233         { SYS_DVBS, QPSK, FEC_1_2,  0x02, 0x2e }, /* 00000010 00101110 */
 234         { SYS_DVBS, QPSK, FEC_2_3,  0x04, 0x2f }, /* 00000100 00101111 */
 235         { SYS_DVBS, QPSK, FEC_3_4,  0x08, 0x30 }, /* 00001000 00110000 */
 236         { SYS_DVBS, QPSK, FEC_4_5,  0xfe, 0x30 }, /* 000?0000 ?        */
 237         { SYS_DVBS, QPSK, FEC_5_6,  0x20, 0x31 }, /* 00100000 00110001 */
 238         { SYS_DVBS, QPSK, FEC_6_7,  0xfe, 0x30 }, /* 0?000000 ?        */
 239         { SYS_DVBS, QPSK, FEC_7_8,  0x80, 0x32 }, /* 10000000 00110010 */
 240         { SYS_DVBS, QPSK, FEC_8_9,  0xfe, 0x30 }, /* 0000000? ?        */
 241         { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
 242         /* NBC-QPSK */
 243         { SYS_DVBS2, QPSK, FEC_NONE, 0x00, 0x00 },
 244         { SYS_DVBS2, QPSK, FEC_1_2,  0x00, 0x04 },
 245         { SYS_DVBS2, QPSK, FEC_3_5,  0x00, 0x05 },
 246         { SYS_DVBS2, QPSK, FEC_2_3,  0x00, 0x06 },
 247         { SYS_DVBS2, QPSK, FEC_3_4,  0x00, 0x07 },
 248         { SYS_DVBS2, QPSK, FEC_4_5,  0x00, 0x08 },
 249         { SYS_DVBS2, QPSK, FEC_5_6,  0x00, 0x09 },
 250         { SYS_DVBS2, QPSK, FEC_8_9,  0x00, 0x0a },
 251         { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
 252         { SYS_DVBS2, QPSK, FEC_AUTO, 0x00, 0x00 },
 253         /* 8PSK */
 254         { SYS_DVBS2, PSK_8, FEC_NONE, 0x00, 0x00 },
 255         { SYS_DVBS2, PSK_8, FEC_3_5,  0x00, 0x0c },
 256         { SYS_DVBS2, PSK_8, FEC_2_3,  0x00, 0x0d },
 257         { SYS_DVBS2, PSK_8, FEC_3_4,  0x00, 0x0e },
 258         { SYS_DVBS2, PSK_8, FEC_5_6,  0x00, 0x0f },
 259         { SYS_DVBS2, PSK_8, FEC_8_9,  0x00, 0x10 },
 260         { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
 261         { SYS_DVBS2, PSK_8, FEC_AUTO, 0x00, 0x00 },
 262         /*
 263          * 'val' can be found in the FECSTATUS register when tuning.
 264          * FECSTATUS will give the actual FEC in use if tuning was successful.
 265          */
 266 };
 267
 268
 269 static int cx24117_writereg(struct cx24117_state *state, u8 reg, u8 data)
 270 {
 271         u8 buf[] = { reg, data };
 272         struct i2c_msg msg = { .addr = state->priv->demod_address,
 273                 .flags = 0, .buf = buf, .len = 2 };
 274         int ret;
 275
 276         dev_dbg(&state->priv->i2c->dev,
 277                         "%s() demod%d i2c wr @0x%02x=0x%02x\n",
 278                         __func__, state->demod, reg, data);
 279
 280         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 281         if (ret < 0) {
 282                 dev_warn(&state->priv->i2c->dev,
 283                         "%s: demod%d i2c wr err(%i) @0x%02x=0x%02x\n",
 284                         KBUILD_MODNAME, state->demod, ret, reg, data);
 285                 return ret;
 286         }
 287         return 0;
 288 }
 289
 290 static int cx24117_writecmd(struct cx24117_state *state,
 291         struct cx24117_cmd *cmd)
 292 {
 293         struct i2c_msg msg;
 294         u8 buf[CX24117_ARGLEN+1];
 295         int ret;
 296
 297         dev_dbg(&state->priv->i2c->dev,
 298                         "%s() demod%d i2c wr cmd len=%d\n",
 299                         __func__, state->demod, cmd->len);
 300
 301         buf[0] = CX24117_REG_COMMAND;
 302         memcpy(&buf[1], cmd->args, cmd->len);
 303
 304         msg.addr = state->priv->demod_address;
 305         msg.flags = 0;
 306         msg.len = cmd->len+1;
 307         msg.buf = buf;
 308         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 309         if (ret < 0) {
 310                 dev_warn(&state->priv->i2c->dev,
 311                         "%s: demod%d i2c wr cmd err(%i) len=%d\n",
 312                         KBUILD_MODNAME, state->demod, ret, cmd->len);
 313                 return ret;
 314         }
 315         return 0;
 316 }
 317
 318 static int cx24117_readreg(struct cx24117_state *state, u8 reg)
 319 {
 320         int ret;
 321         u8 recv = 0;
 322         struct i2c_msg msg[] = {
 323                 { .addr = state->priv->demod_address, .flags = 0,
 324                         .buf = &reg, .len = 1 },
 325                 { .addr = state->priv->demod_address, .flags = I2C_M_RD,
 326                         .buf = &recv, .len = 1 }
 327         };
 328
 329         ret = i2c_transfer(state->priv->i2c, msg, 2);
 330         if (ret < 0) {
 331                 dev_warn(&state->priv->i2c->dev,
 332                         "%s: demod%d i2c rd err(%d) @0x%x\n",
 333                         KBUILD_MODNAME, state->demod, ret, reg);
 334                 return ret;
 335         }
 336
 337         dev_dbg(&state->priv->i2c->dev, "%s() demod%d i2c rd @0x%02x=0x%02x\n",
 338                 __func__, state->demod, reg, recv);
 339
 340         return recv;
 341 }
 342
 343 static int cx24117_readregN(struct cx24117_state *state,
 344         u8 reg, u8 *buf, int len)
 345 {
 346         int ret;
 347         struct i2c_msg msg[] = {
 348                 { .addr = state->priv->demod_address, .flags = 0,
 349                         .buf = &reg, .len = 1 },
 350                 { .addr = state->priv->demod_address, .flags = I2C_M_RD,
 351                         .buf = buf, .len = len }
 352         };
 353
 354         ret = i2c_transfer(state->priv->i2c, msg, 2);
 355         if (ret < 0) {
 356                 dev_warn(&state->priv->i2c->dev,
 357                         "%s: demod%d i2c rd err(%d) @0x%x\n",
 358                         KBUILD_MODNAME, state->demod, ret, reg);
 359                 return ret;
 360         }
 361         return 0;
 362 }
 363
 364 static int cx24117_set_inversion(struct cx24117_state *state,
 365         enum fe_spectral_inversion inversion)
 366 {
 367         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 368                 __func__, inversion, state->demod);
 369
 370         switch (inversion) {
 371         case INVERSION_OFF:
 372                 state->dnxt.inversion_val = 0x00;
 373                 break;
 374         case INVERSION_ON:
 375                 state->dnxt.inversion_val = 0x04;
 376                 break;
 377         case INVERSION_AUTO:
 378                 state->dnxt.inversion_val = 0x0C;
 379                 break;
 380         default:
 381                 return -EINVAL;
 382         }
 383
 384         state->dnxt.inversion = inversion;
 385
 386         return 0;
 387 }
 388
 389 static int cx24117_lookup_fecmod(struct cx24117_state *state,
 390         enum fe_delivery_system d, enum fe_modulation m, enum fe_code_rate f)
 391 {
 392         int i, ret = -EINVAL;
 393
 394         dev_dbg(&state->priv->i2c->dev,
 395                 "%s(demod(0x%02x,0x%02x) demod%d\n",
 396                 __func__, m, f, state->demod);
 397
 398         for (i = 0; i < ARRAY_SIZE(cx24117_modfec_modes); i++) {
 399                 if ((d == cx24117_modfec_modes[i].delivery_system) &&
 400                         (m == cx24117_modfec_modes[i].modulation) &&
 401                         (f == cx24117_modfec_modes[i].fec)) {
 402                                 ret = i;
 403                                 break;
 404                         }
 405         }
 406
 407         return ret;
 408 }
 409
 410 static int cx24117_set_fec(struct cx24117_state *state,
 411                            enum fe_delivery_system delsys,
 412                            enum fe_modulation mod,
 413                            enum fe_code_rate fec)
 414 {
 415         int ret;
 416
 417         dev_dbg(&state->priv->i2c->dev,
 418                 "%s(0x%02x,0x%02x) demod%d\n",
 419                 __func__, mod, fec, state->demod);
 420
 421         ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
 422         if (ret < 0)
 423                 return ret;
 424
 425         state->dnxt.fec = fec;
 426         state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
 427         state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
 428         dev_dbg(&state->priv->i2c->dev,
 429                 "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
 430                 state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
 431
 432         return 0;
 433 }
 434
 435 static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
 436 {
 437         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 438                 __func__, rate, state->demod);
 439
 440         state->dnxt.symbol_rate = rate;
 441
 442         dev_dbg(&state->priv->i2c->dev,
 443                 "%s() demod%d symbol_rate = %d\n",
 444                 __func__, state->demod, rate);
 445
 446         return 0;
 447 }
 448
 449 static int cx24117_load_firmware(struct dvb_frontend *fe,
 450         const struct firmware *fw);
 451
 452 static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
 453 {
 454         struct cx24117_state *state = fe->demodulator_priv;
 455         const struct firmware *fw;
 456         int ret = 0;
 457
 458         dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
 459                 __func__, state->demod, state->priv->skip_fw_load);
 460
 461         if (state->priv->skip_fw_load)
 462                 return 0;
 463
 464         /* check if firmware is already running */
 465         if (cx24117_readreg(state, 0xeb) != 0xa) {
 466                 /* Load firmware */
 467                 /* request the firmware, this will block until loaded */
 468                 dev_dbg(&state->priv->i2c->dev,
 469                         "%s: Waiting for firmware upload (%s)...\n",
 470                         __func__, CX24117_DEFAULT_FIRMWARE);
 471                 ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
 472                         state->priv->i2c->dev.parent);
 473                 dev_dbg(&state->priv->i2c->dev,
 474                         "%s: Waiting for firmware upload(2)...\n", __func__);
 475                 if (ret) {
 476                         dev_err(&state->priv->i2c->dev,
 477                                 "%s: No firmware uploaded "
 478                                 "(timeout or file not found?)\n", __func__);
 479                         return ret;
 480                 }
 481
 482                 /* Make sure we don't recurse back through here
 483                  * during loading */
 484                 state->priv->skip_fw_load = 1;
 485
 486                 ret = cx24117_load_firmware(fe, fw);
 487                 if (ret)
 488                         dev_err(&state->priv->i2c->dev,
 489                                 "%s: Writing firmware failed\n", __func__);
 490                 release_firmware(fw);
 491
 492                 dev_info(&state->priv->i2c->dev,
 493                         "%s: Firmware upload %s\n", __func__,
 494                         ret == 0 ? "complete" : "failed");
 495
 496                 /* Ensure firmware is always loaded if required */
 497                 state->priv->skip_fw_load = 0;
 498         }
 499
 500         return ret;
 501 }
 502
 503 /* Take a basic firmware command structure, format it
 504  * and forward it for processing
 505  */
 506 static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
 507         struct cx24117_cmd *cmd)
 508 {
 509         struct cx24117_state *state = fe->demodulator_priv;
 510         int i, ret;
 511
 512         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
 513                 __func__, state->demod);
 514
 515         /* Load the firmware if required */
 516         ret = cx24117_firmware_ondemand(fe);
 517         if (ret != 0)
 518                 return ret;
 519
 520         /* Write the command */
 521         cx24117_writecmd(state, cmd);
 522
 523         /* Start execution and wait for cmd to terminate */
 524         cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
 525         i = 0;
 526         while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
 527                 msleep(20);
 528                 if (i++ > 40) {
 529                         /* Avoid looping forever if the firmware does
 530                                 not respond */
 531                         dev_warn(&state->priv->i2c->dev,
 532                                 "%s() Firmware not responding\n", __func__);
 533                         return -EIO;
 534                 }
 535         }
 536         return 0;
 537 }
 538
 539 static int cx24117_cmd_execute(struct dvb_frontend *fe, struct cx24117_cmd *cmd)
 540 {
 541         struct cx24117_state *state = fe->demodulator_priv;
 542         int ret;
 543
 544         mutex_lock(&state->priv->fe_lock);
 545         ret = cx24117_cmd_execute_nolock(fe, cmd);
 546         mutex_unlock(&state->priv->fe_lock);
 547
 548         return ret;
 549 }
 550
 551 static int cx24117_load_firmware(struct dvb_frontend *fe,
 552         const struct firmware *fw)
 553 {
 554         struct cx24117_state *state = fe->demodulator_priv;
 555         struct cx24117_cmd cmd;
 556         int i, ret;
 557         unsigned char vers[4];
 558
 559         struct i2c_msg msg;
 560         u8 *buf;
 561
 562         dev_dbg(&state->priv->i2c->dev,
 563                 "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
 564                 __func__, state->demod, fw->size, fw->data[0], fw->data[1],
 565                 fw->data[fw->size - 2], fw->data[fw->size - 1]);
 566
 567         cx24117_writereg(state, 0xea, 0x00);
 568         cx24117_writereg(state, 0xea, 0x01);
 569         cx24117_writereg(state, 0xea, 0x00);
 570
 571         cx24117_writereg(state, 0xce, 0x92);
 572
 573         cx24117_writereg(state, 0xfb, 0x00);
 574         cx24117_writereg(state, 0xfc, 0x00);
 575
 576         cx24117_writereg(state, 0xc3, 0x04);
 577         cx24117_writereg(state, 0xc4, 0x04);
 578
 579         cx24117_writereg(state, 0xce, 0x00);
 580         cx24117_writereg(state, 0xcf, 0x00);
 581
 582         cx24117_writereg(state, 0xea, 0x00);
 583         cx24117_writereg(state, 0xeb, 0x0c);
 584         cx24117_writereg(state, 0xec, 0x06);
 585         cx24117_writereg(state, 0xed, 0x05);
 586         cx24117_writereg(state, 0xee, 0x03);
 587         cx24117_writereg(state, 0xef, 0x05);
 588
 589         cx24117_writereg(state, 0xf3, 0x03);
 590         cx24117_writereg(state, 0xf4, 0x44);
 591
 592         cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
 593         cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
 594
 595         cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
 596         cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
 597
 598         cx24117_writereg(state, 0xf2, 0x04);
 599         cx24117_writereg(state, 0xe8, 0x02);
 600         cx24117_writereg(state, 0xea, 0x01);
 601         cx24117_writereg(state, 0xc8, 0x00);
 602         cx24117_writereg(state, 0xc9, 0x00);
 603         cx24117_writereg(state, 0xca, 0x00);
 604         cx24117_writereg(state, 0xcb, 0x00);
 605         cx24117_writereg(state, 0xcc, 0x00);
 606         cx24117_writereg(state, 0xcd, 0x00);
 607         cx24117_writereg(state, 0xe4, 0x03);
 608         cx24117_writereg(state, 0xeb, 0x0a);
 609
 610         cx24117_writereg(state, 0xfb, 0x00);
 611         cx24117_writereg(state, 0xe0, 0x76);
 612         cx24117_writereg(state, 0xf7, 0x81);
 613         cx24117_writereg(state, 0xf8, 0x00);
 614         cx24117_writereg(state, 0xf9, 0x00);
 615
 616         buf = kmalloc(fw->size + 1, GFP_KERNEL);
 617         if (buf == NULL) {
 618                 state->priv->skip_fw_load = 0;
 619                 return -ENOMEM;
 620         }
 621
 622         /* fw upload reg */
 623         buf[0] = 0xfa;
 624         memcpy(&buf[1], fw->data, fw->size);
 625
 626         /* prepare i2c message to send */
 627         msg.addr = state->priv->demod_address;
 628         msg.flags = 0;
 629         msg.len = fw->size + 1;
 630         msg.buf = buf;
 631
 632         /* send fw */
 633         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 634         if (ret < 0)
 635                 return ret;
 636
 637         kfree(buf);
 638
 639         cx24117_writereg(state, 0xf7, 0x0c);
 640         cx24117_writereg(state, 0xe0, 0x00);
 641
 642         /* Init demodulator */
 643         cmd.args[0] = CMD_DEMODINIT;
 644         cmd.args[1] = 0x00;
 645         cmd.args[2] = 0x01;
 646         cmd.args[3] = 0x00;
 647         cmd.len = 4;
 648         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 649         if (ret != 0)
 650                 goto error;
 651
 652         /* Set VCO frequency */
 653         cmd.args[0] = CMD_SET_VCOFREQ;
 654         cmd.args[1] = 0x06;
 655         cmd.args[2] = 0x2b;
 656         cmd.args[3] = 0xd8;
 657         cmd.args[4] = 0xa5;
 658         cmd.args[5] = 0xee;
 659         cmd.args[6] = 0x03;
 660         cmd.args[7] = 0x9d;
 661         cmd.args[8] = 0xfc;
 662         cmd.args[9] = 0x06;
 663         cmd.args[10] = 0x02;
 664         cmd.args[11] = 0x9d;
 665         cmd.args[12] = 0xfc;
 666         cmd.len = 13;
 667         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 668         if (ret != 0)
 669                 goto error;
 670
 671         /* Tuner init */
 672         cmd.args[0] = CMD_TUNERINIT;
 673         cmd.args[1] = 0x00;
 674         cmd.args[2] = 0x01;
 675         cmd.args[3] = 0x00;
 676         cmd.args[4] = 0x00;
 677         cmd.args[5] = 0x01;
 678         cmd.args[6] = 0x01;
 679         cmd.args[7] = 0x01;
 680         cmd.args[8] = 0x00;
 681         cmd.args[9] = 0x05;
 682         cmd.args[10] = 0x02;
 683         cmd.args[11] = 0x02;
 684         cmd.args[12] = 0x00;
 685         cmd.len = 13;
 686         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 687         if (ret != 0)
 688                 goto error;
 689
 690         /* Global MPEG config */
 691         cmd.args[0] = CMD_GLOBAL_MPEGCFG;
 692         cmd.args[1] = 0x00;
 693         cmd.args[2] = 0x00;
 694         cmd.args[3] = 0x00;
 695         cmd.args[4] = 0x01;
 696         cmd.args[5] = 0x00;
 697         cmd.len = 6;
 698         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 699         if (ret != 0)
 700                 goto error;
 701
 702         /* MPEG config for each demod */
 703         for (i = 0; i < 2; i++) {
 704                 cmd.args[0] = CMD_MPEGCFG;
 705                 cmd.args[1] = (u8) i;
 706                 cmd.args[2] = 0x00;
 707                 cmd.args[3] = 0x05;
 708                 cmd.args[4] = 0x00;
 709                 cmd.args[5] = 0x00;
 710                 cmd.args[6] = 0x55;
 711                 cmd.args[7] = 0x00;
 712                 cmd.len = 8;
 713                 ret = cx24117_cmd_execute_nolock(fe, &cmd);
 714                 if (ret != 0)
 715                         goto error;
 716         }
 717
 718         cx24117_writereg(state, 0xce, 0xc0);
 719         cx24117_writereg(state, 0xcf, 0x00);
 720         cx24117_writereg(state, 0xe5, 0x04);
 721
 722         /* Get firmware version */
 723         cmd.args[0] = CMD_FWVERSION;
 724         cmd.len = 2;
 725         for (i = 0; i < 4; i++) {
 726                 cmd.args[1] = i;
 727                 ret = cx24117_cmd_execute_nolock(fe, &cmd);
 728                 if (ret != 0)
 729                         goto error;
 730                 vers[i] = cx24117_readreg(state, 0x33);
 731         }
 732         dev_info(&state->priv->i2c->dev,
 733                 "%s: FW version %i.%i.%i.%i\n", __func__,
 734                 vers[0], vers[1], vers[2], vers[3]);
 735         return 0;
 736 error:
 737         state->priv->skip_fw_load = 0;
 738         dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n", __func__);
 739         return ret;
 740 }
 741
 742 static int cx24117_read_status(struct dvb_frontend *fe, enum fe_status *status)
 743 {
 744         struct cx24117_state *state = fe->demodulator_priv;
 745         int lock;
 746
 747         lock = cx24117_readreg(state,
 748                 (state->demod == 0) ? CX24117_REG_SSTATUS0 :
 749                                       CX24117_REG_SSTATUS1) &
 750                 CX24117_STATUS_MASK;
 751
 752         dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
 753                 __func__, state->demod, lock);
 754
 755         *status = 0;
 756
 757         if (lock & CX24117_HAS_SIGNAL)
 758                 *status |= FE_HAS_SIGNAL;
 759         if (lock & CX24117_HAS_CARRIER)
 760                 *status |= FE_HAS_CARRIER;
 761         if (lock & CX24117_HAS_VITERBI)
 762                 *status |= FE_HAS_VITERBI;
 763         if (lock & CX24117_HAS_SYNCLOCK)
 764                 *status |= FE_HAS_SYNC | FE_HAS_LOCK;
 765
 766         return 0;
 767 }
 768
 769 static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
 770 {
 771         struct cx24117_state *state = fe->demodulator_priv;
 772         int ret;
 773         u8 buf[4];
 774         u8 base_reg = (state->demod == 0) ?
 775                         CX24117_REG_BER4_0 :
 776                         CX24117_REG_BER4_1;
 777
 778         ret = cx24117_readregN(state, base_reg, buf, 4);
 779         if (ret != 0)
 780                 return ret;
 781
 782         *ber = (buf[0] << 24) | (buf[1] << 16) |
 783                 (buf[1] << 8) | buf[0];
 784
 785         dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
 786                 __func__, state->demod, *ber);
 787
 788         return 0;
 789 }
 790
 791 static int cx24117_read_signal_strength(struct dvb_frontend *fe,
 792         u16 *signal_strength)
 793 {
 794         struct cx24117_state *state = fe->demodulator_priv;
 795         struct cx24117_cmd cmd;
 796         int ret;
 797         u16 sig_reading;
 798         u8 buf[2];
 799         u8 reg = (state->demod == 0) ?
 800                 CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
 801
 802         /* Read AGC accumulator register */
 803         cmd.args[0] = CMD_GET_AGCACC;
 804         cmd.args[1] = (u8) state->demod;
 805         cmd.len = 2;
 806         ret = cx24117_cmd_execute(fe, &cmd);
 807         if (ret != 0)
 808                 return ret;
 809
 810         ret = cx24117_readregN(state, reg, buf, 2);
 811         if (ret != 0)
 812                 return ret;
 813         sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
 814
 815         *signal_strength = -100 * sig_reading + 94324;
 816
 817         dev_dbg(&state->priv->i2c->dev,
 818                 "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
 819                 __func__, state->demod, sig_reading, *signal_strength);
 820
 821         return 0;
 822 }
 823
 824 static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
 825 {
 826         struct cx24117_state *state = fe->demodulator_priv;
 827         int ret;
 828         u8 buf[2];
 829         u8 reg = (state->demod == 0) ?
 830                 CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
 831
 832         ret = cx24117_readregN(state, reg, buf, 2);
 833         if (ret != 0)
 834                 return ret;
 835
 836         *snr = (buf[0] << 8) | buf[1];
 837
 838         dev_dbg(&state->priv->i2c->dev,
 839                 "%s() demod%d snr = 0x%04x\n",
 840                 __func__, state->demod, *snr);
 841
 842         return ret;
 843 }
 844
 845 static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 846 {
 847         struct cx24117_state *state = fe->demodulator_priv;
 848         enum fe_delivery_system delsys = fe->dtv_property_cache.delivery_system;
 849         int ret;
 850         u8 buf[2];
 851         u8 reg = (state->demod == 0) ?
 852                 CX24117_REG_DVBS_UCB2_0 :
 853                 CX24117_REG_DVBS_UCB2_1;
 854
 855         switch (delsys) {
 856         case SYS_DVBS:
 857                 break;
 858         case SYS_DVBS2:
 859                 reg += (CX24117_REG_DVBS2_UCB2_0 - CX24117_REG_DVBS_UCB2_0);
 860                 break;
 861         default:
 862                 return -EINVAL;
 863         }
 864
 865         ret = cx24117_readregN(state, reg, buf, 2);
 866         if (ret != 0)
 867                 return ret;
 868         *ucblocks = (buf[0] << 8) | buf[1];
 869
 870         dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
 871                 __func__, state->demod, *ucblocks);
 872
 873         return 0;
 874 }
 875
 876 /* Overwrite the current tuning params, we are about to tune */
 877 static void cx24117_clone_params(struct dvb_frontend *fe)
 878 {
 879         struct cx24117_state *state = fe->demodulator_priv;
 880         state->dcur = state->dnxt;
 881 }
 882
 883 /* Wait for LNB */
 884 static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
 885 {
 886         struct cx24117_state *state = fe->demodulator_priv;
 887         int i;
 888         u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
 889                                             CX24117_REG_QSTATUS1;
 890
 891         dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
 892                 __func__, state->demod, cx24117_readreg(state, reg));
 893
 894         /* Wait for up to 300 ms */
 895         for (i = 0; i < 10; i++) {
 896                 val = cx24117_readreg(state, reg) & 0x01;
 897                 if (val != 0)
 898                         return 0;
 899                 msleep(30);
 900         }
 901
 902         dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
 903                 KBUILD_MODNAME, state->demod);
 904
 905         return -ETIMEDOUT; /* -EBUSY ? */
 906 }
 907
 908 static int cx24117_set_voltage(struct dvb_frontend *fe,
 909                                enum fe_sec_voltage voltage)
 910 {
 911         struct cx24117_state *state = fe->demodulator_priv;
 912         struct cx24117_cmd cmd;
 913         int ret;
 914         u8 reg = (state->demod == 0) ? 0x10 : 0x20;
 915
 916         dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
 917                 __func__, state->demod,
 918                 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 919                 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
 920                 "SEC_VOLTAGE_OFF");
 921
 922         /* Prepare a set GPIO logic level CMD */
 923         cmd.args[0] = CMD_SET_GPIOOUT;
 924         cmd.args[2] = reg; /* mask */
 925         cmd.len = 3;
 926
 927         if ((voltage == SEC_VOLTAGE_13) ||
 928             (voltage == SEC_VOLTAGE_18)) {
 929                 /* power on LNB */
 930                 cmd.args[1] = reg;
 931                 ret = cx24117_cmd_execute(fe, &cmd);
 932                 if (ret != 0)
 933                         return ret;
 934
 935                 ret = cx24117_wait_for_lnb(fe);
 936                 if (ret != 0)
 937                         return ret;
 938
 939                 /* Wait for voltage/min repeat delay */
 940                 msleep(100);
 941
 942                 /* Set 13V/18V select pin */
 943                 cmd.args[0] = CMD_LNBDCLEVEL;
 944                 cmd.args[1] = state->demod ? 0 : 1;
 945                 cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
 946                 cmd.len = 3;
 947                 ret = cx24117_cmd_execute(fe, &cmd);
 948
 949                 /* Min delay time before DiSEqC send */
 950                 msleep(20);
 951         } else {
 952                 /* power off LNB */
 953                 cmd.args[1] = 0x00;
 954                 ret = cx24117_cmd_execute(fe, &cmd);
 955         }
 956
 957         return ret;
 958 }
 959
 960 static int cx24117_set_tone(struct dvb_frontend *fe,
 961                             enum fe_sec_tone_mode tone)
 962 {
 963         struct cx24117_state *state = fe->demodulator_priv;
 964         struct cx24117_cmd cmd;
 965         int ret;
 966
 967         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 968                 __func__, state->demod, tone);
 969         if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
 970                 dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid tone=%d\n",
 971                         KBUILD_MODNAME, state->demod, tone);
 972                 return -EINVAL;
 973         }
 974
 975         /* Wait for LNB ready */
 976         ret = cx24117_wait_for_lnb(fe);
 977         if (ret != 0)
 978                 return ret;
 979
 980         /* Min delay time after DiSEqC send */
 981         msleep(20);
 982
 983         /* Set the tone */
 984         cmd.args[0] = CMD_LNBPCBCONFIG;
 985         cmd.args[1] = (state->demod ? 0 : 1);
 986         cmd.args[2] = 0x00;
 987         cmd.args[3] = 0x00;
 988         cmd.len = 5;
 989         switch (tone) {
 990         case SEC_TONE_ON:
 991                 cmd.args[4] = 0x01;
 992                 break;
 993         case SEC_TONE_OFF:
 994                 cmd.args[4] = 0x00;
 995                 break;
 996         }
 997
 998         msleep(20);
 999
1000         return cx24117_cmd_execute(fe, &cmd);
1001 }
1002
1003 /* Initialise DiSEqC */
1004 static int cx24117_diseqc_init(struct dvb_frontend *fe)
1005 {
1006         struct cx24117_state *state = fe->demodulator_priv;
1007
1008         /* Prepare a DiSEqC command */
1009         state->dsec_cmd.args[0] = CMD_LNBSEND;
1010
1011         /* demod */
1012         state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
1013
1014         /* DiSEqC burst */
1015         state->dsec_cmd.args[CX24117_DISEQC_BURST] = CX24117_DISEQC_MINI_A;
1016
1017         /* Unknown */
1018         state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
1019         state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
1020
1021         /* Continuation flag? */
1022         state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
1023
1024         /* DiSEqC message length */
1025         state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
1026
1027         /* Command length */
1028         state->dsec_cmd.len = 7;
1029
1030         return 0;
1031 }
1032
1033 /* Send DiSEqC message */
1034 static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
1035         struct dvb_diseqc_master_cmd *d)
1036 {
1037         struct cx24117_state *state = fe->demodulator_priv;
1038         int i, ret;
1039
1040         /* Dump DiSEqC message */
1041         dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
1042                 __func__, state->demod);
1043         for (i = 0; i < d->msg_len; i++)
1044                 dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
1045         dev_dbg(&state->priv->i2c->dev, ")\n");
1046
1047         /* Validate length */
1048         if (d->msg_len > sizeof(d->msg))
1049                 return -EINVAL;
1050
1051         /* DiSEqC message */
1052         for (i = 0; i < d->msg_len; i++)
1053                 state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] = d->msg[i];
1054
1055         /* DiSEqC message length */
1056         state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
1057
1058         /* Command length */
1059         state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
1060                 state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
1061
1062         /*
1063          * Message is sent with derived else cached burst
1064          *
1065          * WRITE PORT GROUP COMMAND 38
1066          *
1067          * 0/A/A: E0 10 38 F0..F3
1068          * 1/B/B: E0 10 38 F4..F7
1069          * 2/C/A: E0 10 38 F8..FB
1070          * 3/D/B: E0 10 38 FC..FF
1071          *
1072          * databyte[3]= 8421:8421
1073          *              ABCD:WXYZ
1074          *              CLR :SET
1075          *
1076          *              WX= PORT SELECT 0..3    (X=TONEBURST)
1077          *              Y = VOLTAGE             (0=13V, 1=18V)
1078          *              Z = BAND                (0=LOW, 1=HIGH(22K))
1079          */
1080         if (d->msg_len >= 4 && d->msg[2] == 0x38)
1081                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1082                         ((d->msg[3] & 4) >> 2);
1083
1084         dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
1085                 __func__, state->demod,
1086                 state->dsec_cmd.args[CX24117_DISEQC_BURST]);
1087
1088         /* Wait for LNB ready */
1089         ret = cx24117_wait_for_lnb(fe);
1090         if (ret != 0)
1091                 return ret;
1092
1093         /* Wait for voltage/min repeat delay */
1094         msleep(100);
1095
1096         /* Command */
1097         ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
1098         if (ret != 0)
1099                 return ret;
1100         /*
1101          * Wait for send
1102          *
1103          * Eutelsat spec:
1104          * >15ms delay          + (XXX determine if FW does this, see set_tone)
1105          *  13.5ms per byte     +
1106          * >15ms delay          +
1107          *  12.5ms burst        +
1108          * >15ms delay            (XXX determine if FW does this, see set_tone)
1109          */
1110         msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
1111
1112         return 0;
1113 }
1114
1115 /* Send DiSEqC burst */
1116 static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
1117         enum fe_sec_mini_cmd burst)
1118 {
1119         struct cx24117_state *state = fe->demodulator_priv;
1120
1121         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
1122                 __func__, burst, state->demod);
1123
1124         /* DiSEqC burst */
1125         if (burst == SEC_MINI_A)
1126                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1127                         CX24117_DISEQC_MINI_A;
1128         else if (burst == SEC_MINI_B)
1129                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1130                         CX24117_DISEQC_MINI_B;
1131         else
1132                 return -EINVAL;
1133
1134         return 0;
1135 }
1136
1137 static int cx24117_get_priv(struct cx24117_priv **priv,
1138         struct i2c_adapter *i2c, u8 client_address)
1139 {
1140         int ret;
1141
1142         mutex_lock(&cx24117_list_mutex);
1143         ret = hybrid_tuner_request_state(struct cx24117_priv, (*priv),
1144                 hybrid_tuner_instance_list, i2c, client_address, "cx24117");
1145         mutex_unlock(&cx24117_list_mutex);
1146
1147         return ret;
1148 }
1149
1150 static void cx24117_release_priv(struct cx24117_priv *priv)
1151 {
1152         mutex_lock(&cx24117_list_mutex);
1153         if (priv != NULL)
1154                 hybrid_tuner_release_state(priv);
1155         mutex_unlock(&cx24117_list_mutex);
1156 }
1157
1158 static void cx24117_release(struct dvb_frontend *fe)
1159 {
1160         struct cx24117_state *state = fe->demodulator_priv;
1161         dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
1162                 __func__, state->demod);
1163         cx24117_release_priv(state->priv);
1164         kfree(state);
1165 }
1166
1167 static struct dvb_frontend_ops cx24117_ops;
1168
1169 struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
1170         struct i2c_adapter *i2c)
1171 {
1172         struct cx24117_state *state = NULL;
1173         struct cx24117_priv *priv = NULL;
1174         int demod = 0;
1175
1176         /* get the common data struct for both demods */
1177         demod = cx24117_get_priv(&priv, i2c, config->demod_address);
1178
1179         switch (demod) {
1180         case 0:
1181                 dev_err(&i2c->dev,
1182                         "%s: Error attaching frontend %d\n",
1183                         KBUILD_MODNAME, demod);
1184                 goto error1;
1185                 break;
1186         case 1:
1187                 /* new priv instance */
1188                 priv->i2c = i2c;
1189                 priv->demod_address = config->demod_address;
1190                 mutex_init(&priv->fe_lock);
1191                 break;
1192         default:
1193                 /* existing priv instance */
1194                 break;
1195         }
1196
1197         /* allocate memory for the internal state */
1198         state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1199         if (state == NULL)
1200                 goto error2;
1201
1202         state->demod = demod - 1;
1203         state->priv = priv;
1204
1205         dev_info(&state->priv->i2c->dev,
1206                 "%s: Attaching frontend %d\n",
1207                 KBUILD_MODNAME, state->demod);
1208
1209         /* create dvb_frontend */
1210         memcpy(&state->frontend.ops, &cx24117_ops,
1211                 sizeof(struct dvb_frontend_ops));
1212         state->frontend.demodulator_priv = state;
1213         return &state->frontend;
1214
1215 error2:
1216         cx24117_release_priv(priv);
1217 error1:
1218         return NULL;
1219 }
1220 EXPORT_SYMBOL_GPL(cx24117_attach);
1221
1222 /*
1223  * Initialise or wake up device
1224  *
1225  * Power config will reset and load initial firmware if required
1226  */
1227 static int cx24117_initfe(struct dvb_frontend *fe)
1228 {
1229         struct cx24117_state *state = fe->demodulator_priv;
1230         struct cx24117_cmd cmd;
1231         int ret;
1232
1233         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1234                 __func__, state->demod);
1235
1236         mutex_lock(&state->priv->fe_lock);
1237
1238         /* Set sleep mode off */
1239         cmd.args[0] = CMD_SET_SLEEPMODE;
1240         cmd.args[1] = (state->demod ? 1 : 0);
1241         cmd.args[2] = 0;
1242         cmd.len = 3;
1243         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1244         if (ret != 0)
1245                 goto exit;
1246
1247         ret = cx24117_diseqc_init(fe);
1248         if (ret != 0)
1249                 goto exit;
1250
1251         /* Set BER control */
1252         cmd.args[0] = CMD_BERCTRL;
1253         cmd.args[1] = (state->demod ? 1 : 0);
1254         cmd.args[2] = 0x10;
1255         cmd.args[3] = 0x10;
1256         cmd.len = 4;
1257         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1258         if (ret != 0)
1259                 goto exit;
1260
1261         /* Set RS correction (enable/disable) */
1262         cmd.args[0] = CMD_ENABLERSCORR;
1263         cmd.args[1] = (state->demod ? 1 : 0);
1264         cmd.args[2] = CX24117_OCC;
1265         cmd.len = 3;
1266         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1267         if (ret != 0)
1268                 goto exit;
1269
1270         /* Set GPIO direction */
1271         /* Set as output - controls LNB power on/off */
1272         cmd.args[0] = CMD_SET_GPIODIR;
1273         cmd.args[1] = 0x30;
1274         cmd.args[2] = 0x30;
1275         cmd.len = 3;
1276         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1277
1278 exit:
1279         mutex_unlock(&state->priv->fe_lock);
1280
1281         return ret;
1282 }
1283
1284 /*
1285  * Put device to sleep
1286  */
1287 static int cx24117_sleep(struct dvb_frontend *fe)
1288 {
1289         struct cx24117_state *state = fe->demodulator_priv;
1290         struct cx24117_cmd cmd;
1291
1292         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1293                 __func__, state->demod);
1294
1295         /* Set sleep mode on */
1296         cmd.args[0] = CMD_SET_SLEEPMODE;
1297         cmd.args[1] = (state->demod ? 1 : 0);
1298         cmd.args[2] = 1;
1299         cmd.len = 3;
1300         return cx24117_cmd_execute(fe, &cmd);
1301 }
1302
1303 /* dvb-core told us to tune, the tv property cache will be complete,
1304  * it's safe for is to pull values and use them for tuning purposes.
1305  */
1306 static int cx24117_set_frontend(struct dvb_frontend *fe)
1307 {
1308         struct cx24117_state *state = fe->demodulator_priv;
1309         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1310         struct cx24117_cmd cmd;
1311         enum fe_status tunerstat;
1312         int i, status, ret, retune = 1;
1313         u8 reg_clkdiv, reg_ratediv;
1314
1315         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1316                 __func__, state->demod);
1317
1318         switch (c->delivery_system) {
1319         case SYS_DVBS:
1320                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1321                         __func__, state->demod);
1322
1323                 /* Only QPSK is supported for DVB-S */
1324                 if (c->modulation != QPSK) {
1325                         dev_dbg(&state->priv->i2c->dev,
1326                                 "%s() demod%d unsupported modulation (%d)\n",
1327                                 __func__, state->demod, c->modulation);
1328                         return -EINVAL;
1329                 }
1330
1331                 /* Pilot doesn't exist in DVB-S, turn bit off */
1332                 state->dnxt.pilot_val = CX24117_PILOT_OFF;
1333
1334                 /* DVB-S only supports 0.35 */
1335                 state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1336                 break;
1337
1338         case SYS_DVBS2:
1339                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1340                         __func__, state->demod);
1341
1342                 /*
1343                  * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1344                  * but not hardware auto detection
1345                  */
1346                 if (c->modulation != PSK_8 && c->modulation != QPSK) {
1347                         dev_dbg(&state->priv->i2c->dev,
1348                                 "%s() demod%d unsupported modulation (%d)\n",
1349                                 __func__, state->demod, c->modulation);
1350                         return -EOPNOTSUPP;
1351                 }
1352
1353                 switch (c->pilot) {
1354                 case PILOT_AUTO:
1355                         state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1356                         break;
1357                 case PILOT_OFF:
1358                         state->dnxt.pilot_val = CX24117_PILOT_OFF;
1359                         break;
1360                 case PILOT_ON:
1361                         state->dnxt.pilot_val = CX24117_PILOT_ON;
1362                         break;
1363                 default:
1364                         dev_dbg(&state->priv->i2c->dev,
1365                                 "%s() demod%d unsupported pilot mode (%d)\n",
1366                                 __func__, state->demod, c->pilot);
1367                         return -EOPNOTSUPP;
1368                 }
1369
1370                 switch (c->rolloff) {
1371                 case ROLLOFF_20:
1372                         state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1373                         break;
1374                 case ROLLOFF_25:
1375                         state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1376                         break;
1377                 case ROLLOFF_35:
1378                         state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1379                         break;
1380                 case ROLLOFF_AUTO:
1381                         state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1382                         /* soft-auto rolloff */
1383                         retune = 3;
1384                         break;
1385                 default:
1386                         dev_warn(&state->priv->i2c->dev,
1387                                 "%s: demod%d unsupported rolloff (%d)\n",
1388                                 KBUILD_MODNAME, state->demod, c->rolloff);
1389                         return -EOPNOTSUPP;
1390                 }
1391                 break;
1392
1393         default:
1394                 dev_warn(&state->priv->i2c->dev,
1395                         "%s: demod %d unsupported delivery system (%d)\n",
1396                         KBUILD_MODNAME, state->demod, c->delivery_system);
1397                 return -EINVAL;
1398         }
1399
1400         state->dnxt.delsys = c->delivery_system;
1401         state->dnxt.modulation = c->modulation;
1402         state->dnxt.frequency = c->frequency;
1403         state->dnxt.pilot = c->pilot;
1404         state->dnxt.rolloff = c->rolloff;
1405
1406         ret = cx24117_set_inversion(state, c->inversion);
1407         if (ret !=  0)
1408                 return ret;
1409
1410         ret = cx24117_set_fec(state,
1411                 c->delivery_system, c->modulation, c->fec_inner);
1412         if (ret !=  0)
1413                 return ret;
1414
1415         ret = cx24117_set_symbolrate(state, c->symbol_rate);
1416         if (ret !=  0)
1417                 return ret;
1418
1419         /* discard the 'current' tuning parameters and prepare to tune */
1420         cx24117_clone_params(fe);
1421
1422         dev_dbg(&state->priv->i2c->dev,
1423                 "%s: delsys      = %d\n", __func__, state->dcur.delsys);
1424         dev_dbg(&state->priv->i2c->dev,
1425                 "%s: modulation  = %d\n", __func__, state->dcur.modulation);
1426         dev_dbg(&state->priv->i2c->dev,
1427                 "%s: frequency   = %d\n", __func__, state->dcur.frequency);
1428         dev_dbg(&state->priv->i2c->dev,
1429                 "%s: pilot       = %d (val = 0x%02x)\n", __func__,
1430                 state->dcur.pilot, state->dcur.pilot_val);
1431         dev_dbg(&state->priv->i2c->dev,
1432                 "%s: retune      = %d\n", __func__, retune);
1433         dev_dbg(&state->priv->i2c->dev,
1434                 "%s: rolloff     = %d (val = 0x%02x)\n", __func__,
1435                 state->dcur.rolloff, state->dcur.rolloff_val);
1436         dev_dbg(&state->priv->i2c->dev,
1437                 "%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1438         dev_dbg(&state->priv->i2c->dev,
1439                 "%s: FEC         = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1440                 state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1441         dev_dbg(&state->priv->i2c->dev,
1442                 "%s: Inversion   = %d (val = 0x%02x)\n", __func__,
1443                 state->dcur.inversion, state->dcur.inversion_val);
1444
1445         /* Prepare a tune request */
1446         cmd.args[0] = CMD_TUNEREQUEST;
1447
1448         /* demod */
1449         cmd.args[1] = state->demod;
1450
1451         /* Frequency */
1452         cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1453         cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1454         cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1455
1456         /* Symbol Rate */
1457         cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1458         cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1459
1460         /* Automatic Inversion */
1461         cmd.args[7] = state->dcur.inversion_val;
1462
1463         /* Modulation / FEC / Pilot */
1464         cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1465
1466         cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1467         cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1468
1469         cmd.args[11] = state->dcur.rolloff_val;
1470         cmd.args[12] = state->dcur.fec_mask;
1471
1472         if (state->dcur.symbol_rate > 30000000) {
1473                 reg_ratediv = 0x04;
1474                 reg_clkdiv = 0x02;
1475         } else if (state->dcur.symbol_rate > 10000000) {
1476                 reg_ratediv = 0x06;
1477                 reg_clkdiv = 0x03;
1478         } else {
1479                 reg_ratediv = 0x0a;
1480                 reg_clkdiv = 0x05;
1481         }
1482
1483         cmd.args[13] = reg_ratediv;
1484         cmd.args[14] = reg_clkdiv;
1485
1486         cx24117_writereg(state, (state->demod == 0) ?
1487                 CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1488         cx24117_writereg(state, (state->demod == 0) ?
1489                 CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1490
1491         cmd.args[15] = CX24117_PNE;
1492         cmd.len = 16;
1493
1494         do {
1495                 /* Reset status register */
1496                 status = cx24117_readreg(state, (state->demod == 0) ?
1497                         CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1498                         CX24117_SIGNAL_MASK;
1499
1500                 dev_dbg(&state->priv->i2c->dev,
1501                         "%s() demod%d status_setfe = %02x\n",
1502                         __func__, state->demod, status);
1503
1504                 cx24117_writereg(state, (state->demod == 0) ?
1505                         CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1506
1507                 /* Tune */
1508                 ret = cx24117_cmd_execute(fe, &cmd);
1509                 if (ret != 0)
1510                         break;
1511
1512                 /*
1513                  * Wait for up to 500 ms before retrying
1514                  *
1515                  * If we are able to tune then generally it occurs within 100ms.
1516                  * If it takes longer, try a different rolloff setting.
1517                  */
1518                 for (i = 0; i < 50; i++) {
1519                         cx24117_read_status(fe, &tunerstat);
1520                         status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1521                         if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1522                                 dev_dbg(&state->priv->i2c->dev,
1523                                         "%s() demod%d tuned\n",
1524                                         __func__, state->demod);
1525                                 return 0;
1526                         }
1527                         msleep(20);
1528                 }
1529
1530                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1531                         __func__, state->demod);
1532
1533                 /* try next rolloff value */
1534                 if (state->dcur.rolloff == 3)
1535                         cmd.args[11]--;
1536
1537         } while (--retune);
1538         return -EINVAL;
1539 }
1540
1541 static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1542         unsigned int mode_flags, unsigned int *delay, enum fe_status *status)
1543 {
1544         struct cx24117_state *state = fe->demodulator_priv;
1545
1546         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1547                 __func__, state->demod);
1548
1549         *delay = HZ / 5;
1550         if (re_tune) {
1551                 int ret = cx24117_set_frontend(fe);
1552                 if (ret)
1553                         return ret;
1554         }
1555         return cx24117_read_status(fe, status);
1556 }
1557
1558 static int cx24117_get_algo(struct dvb_frontend *fe)
1559 {
1560         return DVBFE_ALGO_HW;
1561 }
1562
1563 static int cx24117_get_frontend(struct dvb_frontend *fe)
1564 {
1565         struct cx24117_state *state = fe->demodulator_priv;
1566         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1567         struct cx24117_cmd cmd;
1568         u8 reg, st, inv;
1569         int ret, idx;
1570         unsigned int freq;
1571         short srate_os, freq_os;
1572
1573         u8 buf[0x1f-4];
1574
1575         /* Read current tune parameters */
1576         cmd.args[0] = CMD_GETCTLACC;
1577         cmd.args[1] = (u8) state->demod;
1578         cmd.len = 2;
1579         ret = cx24117_cmd_execute(fe, &cmd);
1580         if (ret != 0)
1581                 return ret;
1582
1583         /* read all required regs at once */
1584         reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1585         ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1586         if (ret != 0)
1587                 return ret;
1588
1589         st = buf[5];
1590
1591         /* get spectral inversion */
1592         inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1593         if (inv == 0)
1594                 c->inversion = INVERSION_OFF;
1595         else
1596                 c->inversion = INVERSION_ON;
1597
1598         /* modulation and fec */
1599         idx = st & 0x3f;
1600         if (c->delivery_system == SYS_DVBS2) {
1601                 if (idx > 11)
1602                         idx += 9;
1603                 else
1604                         idx += 7;
1605         }
1606
1607         c->modulation = cx24117_modfec_modes[idx].modulation;
1608         c->fec_inner = cx24117_modfec_modes[idx].fec;
1609
1610         /* frequency */
1611         freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1612         freq_os = (buf[8] << 8) | buf[9];
1613         c->frequency = freq + freq_os;
1614
1615         /* symbol rate */
1616         srate_os = (buf[10] << 8) | buf[11];
1617         c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1618         return 0;
1619 }
1620
1621 static struct dvb_frontend_ops cx24117_ops = {
1622         .delsys = { SYS_DVBS, SYS_DVBS2 },
1623         .info = {
1624                 .name = "Conexant CX24117/CX24132",
1625                 .frequency_min = 950000,
1626                 .frequency_max = 2150000,
1627                 .frequency_stepsize = 1011, /* kHz for QPSK frontends */
1628                 .frequency_tolerance = 5000,
1629                 .symbol_rate_min = 1000000,
1630                 .symbol_rate_max = 45000000,
1631                 .caps = FE_CAN_INVERSION_AUTO |
1632                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1633                         FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1634                         FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1635                         FE_CAN_2G_MODULATION |
1636                         FE_CAN_QPSK | FE_CAN_RECOVER
1637         },
1638
1639         .release = cx24117_release,
1640
1641         .init = cx24117_initfe,
1642         .sleep = cx24117_sleep,
1643         .read_status = cx24117_read_status,
1644         .read_ber = cx24117_read_ber,
1645         .read_signal_strength = cx24117_read_signal_strength,
1646         .read_snr = cx24117_read_snr,
1647         .read_ucblocks = cx24117_read_ucblocks,
1648         .set_tone = cx24117_set_tone,
1649         .set_voltage = cx24117_set_voltage,
1650         .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1651         .diseqc_send_burst = cx24117_diseqc_send_burst,
1652         .get_frontend_algo = cx24117_get_algo,
1653         .tune = cx24117_tune,
1654
1655         .set_frontend = cx24117_set_frontend,
1656         .get_frontend = cx24117_get_frontend,
1657 };
1658
1659
1660 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1661 MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1662 MODULE_LICENSE("GPL");
1663 MODULE_VERSION("1.1");
1664 MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1665