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         fe_spectral_inversion_t inversion;
 175         fe_code_rate_t fec;
 176
 177         fe_delivery_system_t delsys;
 178         fe_modulation_t modulation;
 179         fe_pilot_t pilot;
 180         fe_rolloff_t 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         fe_delivery_system_t delivery_system;
 224         fe_modulation_t modulation;
 225         fe_code_rate_t 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         fe_spectral_inversion_t 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         fe_delivery_system_t d, fe_modulation_t m, fe_code_rate_t 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         fe_delivery_system_t delsys, fe_modulation_t mod, fe_code_rate_t fec)
 412 {
 413         int ret;
 414
 415         dev_dbg(&state->priv->i2c->dev,
 416                 "%s(0x%02x,0x%02x) demod%d\n",
 417                 __func__, mod, fec, state->demod);
 418
 419         ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
 420         if (ret < 0)
 421                 return ret;
 422
 423         state->dnxt.fec = fec;
 424         state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
 425         state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
 426         dev_dbg(&state->priv->i2c->dev,
 427                 "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
 428                 state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
 429
 430         return 0;
 431 }
 432
 433 static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
 434 {
 435         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 436                 __func__, rate, state->demod);
 437
 438         state->dnxt.symbol_rate = rate;
 439
 440         dev_dbg(&state->priv->i2c->dev,
 441                 "%s() demod%d symbol_rate = %d\n",
 442                 __func__, state->demod, rate);
 443
 444         return 0;
 445 }
 446
 447 static int cx24117_load_firmware(struct dvb_frontend *fe,
 448         const struct firmware *fw);
 449
 450 static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
 451 {
 452         struct cx24117_state *state = fe->demodulator_priv;
 453         const struct firmware *fw;
 454         int ret = 0;
 455
 456         dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
 457                 __func__, state->demod, state->priv->skip_fw_load);
 458
 459         if (state->priv->skip_fw_load)
 460                 return 0;
 461
 462         /* check if firmware is already running */
 463         if (cx24117_readreg(state, 0xeb) != 0xa) {
 464                 /* Load firmware */
 465                 /* request the firmware, this will block until loaded */
 466                 dev_dbg(&state->priv->i2c->dev,
 467                         "%s: Waiting for firmware upload (%s)...\n",
 468                         __func__, CX24117_DEFAULT_FIRMWARE);
 469                 ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
 470                         state->priv->i2c->dev.parent);
 471                 dev_dbg(&state->priv->i2c->dev,
 472                         "%s: Waiting for firmware upload(2)...\n", __func__);
 473                 if (ret) {
 474                         dev_err(&state->priv->i2c->dev,
 475                                 "%s: No firmware uploaded "
 476                                 "(timeout or file not found?)\n", __func__);
 477                         return ret;
 478                 }
 479
 480                 /* Make sure we don't recurse back through here
 481                  * during loading */
 482                 state->priv->skip_fw_load = 1;
 483
 484                 ret = cx24117_load_firmware(fe, fw);
 485                 if (ret)
 486                         dev_err(&state->priv->i2c->dev,
 487                                 "%s: Writing firmware failed\n", __func__);
 488                 release_firmware(fw);
 489
 490                 dev_info(&state->priv->i2c->dev,
 491                         "%s: Firmware upload %s\n", __func__,
 492                         ret == 0 ? "complete" : "failed");
 493
 494                 /* Ensure firmware is always loaded if required */
 495                 state->priv->skip_fw_load = 0;
 496         }
 497
 498         return ret;
 499 }
 500
 501 /* Take a basic firmware command structure, format it
 502  * and forward it for processing
 503  */
 504 static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
 505         struct cx24117_cmd *cmd)
 506 {
 507         struct cx24117_state *state = fe->demodulator_priv;
 508         int i, ret;
 509
 510         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
 511                 __func__, state->demod);
 512
 513         /* Load the firmware if required */
 514         ret = cx24117_firmware_ondemand(fe);
 515         if (ret != 0)
 516                 return ret;
 517
 518         /* Write the command */
 519         cx24117_writecmd(state, cmd);
 520
 521         /* Start execution and wait for cmd to terminate */
 522         cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
 523         i = 0;
 524         while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
 525                 msleep(20);
 526                 if (i++ > 40) {
 527                         /* Avoid looping forever if the firmware does
 528                                 not respond */
 529                         dev_warn(&state->priv->i2c->dev,
 530                                 "%s() Firmware not responding\n", __func__);
 531                         return -EIO;
 532                 }
 533         }
 534         return 0;
 535 }
 536
 537 static int cx24117_cmd_execute(struct dvb_frontend *fe, struct cx24117_cmd *cmd)
 538 {
 539         struct cx24117_state *state = fe->demodulator_priv;
 540         int ret;
 541
 542         mutex_lock(&state->priv->fe_lock);
 543         ret = cx24117_cmd_execute_nolock(fe, cmd);
 544         mutex_unlock(&state->priv->fe_lock);
 545
 546         return ret;
 547 }
 548
 549 static int cx24117_load_firmware(struct dvb_frontend *fe,
 550         const struct firmware *fw)
 551 {
 552         struct cx24117_state *state = fe->demodulator_priv;
 553         struct cx24117_cmd cmd;
 554         int i, ret;
 555         unsigned char vers[4];
 556
 557         struct i2c_msg msg;
 558         u8 *buf;
 559
 560         dev_dbg(&state->priv->i2c->dev,
 561                 "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
 562                 __func__, state->demod, fw->size, fw->data[0], fw->data[1],
 563                 fw->data[fw->size - 2], fw->data[fw->size - 1]);
 564
 565         cx24117_writereg(state, 0xea, 0x00);
 566         cx24117_writereg(state, 0xea, 0x01);
 567         cx24117_writereg(state, 0xea, 0x00);
 568
 569         cx24117_writereg(state, 0xce, 0x92);
 570
 571         cx24117_writereg(state, 0xfb, 0x00);
 572         cx24117_writereg(state, 0xfc, 0x00);
 573
 574         cx24117_writereg(state, 0xc3, 0x04);
 575         cx24117_writereg(state, 0xc4, 0x04);
 576
 577         cx24117_writereg(state, 0xce, 0x00);
 578         cx24117_writereg(state, 0xcf, 0x00);
 579
 580         cx24117_writereg(state, 0xea, 0x00);
 581         cx24117_writereg(state, 0xeb, 0x0c);
 582         cx24117_writereg(state, 0xec, 0x06);
 583         cx24117_writereg(state, 0xed, 0x05);
 584         cx24117_writereg(state, 0xee, 0x03);
 585         cx24117_writereg(state, 0xef, 0x05);
 586
 587         cx24117_writereg(state, 0xf3, 0x03);
 588         cx24117_writereg(state, 0xf4, 0x44);
 589
 590         cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
 591         cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
 592
 593         cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
 594         cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
 595
 596         cx24117_writereg(state, 0xf2, 0x04);
 597         cx24117_writereg(state, 0xe8, 0x02);
 598         cx24117_writereg(state, 0xea, 0x01);
 599         cx24117_writereg(state, 0xc8, 0x00);
 600         cx24117_writereg(state, 0xc9, 0x00);
 601         cx24117_writereg(state, 0xca, 0x00);
 602         cx24117_writereg(state, 0xcb, 0x00);
 603         cx24117_writereg(state, 0xcc, 0x00);
 604         cx24117_writereg(state, 0xcd, 0x00);
 605         cx24117_writereg(state, 0xe4, 0x03);
 606         cx24117_writereg(state, 0xeb, 0x0a);
 607
 608         cx24117_writereg(state, 0xfb, 0x00);
 609         cx24117_writereg(state, 0xe0, 0x76);
 610         cx24117_writereg(state, 0xf7, 0x81);
 611         cx24117_writereg(state, 0xf8, 0x00);
 612         cx24117_writereg(state, 0xf9, 0x00);
 613
 614         buf = kmalloc(fw->size + 1, GFP_KERNEL);
 615         if (buf == NULL) {
 616                 state->priv->skip_fw_load = 0;
 617                 return -ENOMEM;
 618         }
 619
 620         /* fw upload reg */
 621         buf[0] = 0xfa;
 622         memcpy(&buf[1], fw->data, fw->size);
 623
 624         /* prepare i2c message to send */
 625         msg.addr = state->priv->demod_address;
 626         msg.flags = 0;
 627         msg.len = fw->size + 1;
 628         msg.buf = buf;
 629
 630         /* send fw */
 631         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 632         if (ret < 0)
 633                 return ret;
 634
 635         kfree(buf);
 636
 637         cx24117_writereg(state, 0xf7, 0x0c);
 638         cx24117_writereg(state, 0xe0, 0x00);
 639
 640         /* Init demodulator */
 641         cmd.args[0] = CMD_DEMODINIT;
 642         cmd.args[1] = 0x00;
 643         cmd.args[2] = 0x01;
 644         cmd.args[3] = 0x00;
 645         cmd.len = 4;
 646         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 647         if (ret != 0)
 648                 goto error;
 649
 650         /* Set VCO frequency */
 651         cmd.args[0] = CMD_SET_VCOFREQ;
 652         cmd.args[1] = 0x06;
 653         cmd.args[2] = 0x2b;
 654         cmd.args[3] = 0xd8;
 655         cmd.args[4] = 0xa5;
 656         cmd.args[5] = 0xee;
 657         cmd.args[6] = 0x03;
 658         cmd.args[7] = 0x9d;
 659         cmd.args[8] = 0xfc;
 660         cmd.args[9] = 0x06;
 661         cmd.args[10] = 0x02;
 662         cmd.args[11] = 0x9d;
 663         cmd.args[12] = 0xfc;
 664         cmd.len = 13;
 665         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 666         if (ret != 0)
 667                 goto error;
 668
 669         /* Tuner init */
 670         cmd.args[0] = CMD_TUNERINIT;
 671         cmd.args[1] = 0x00;
 672         cmd.args[2] = 0x01;
 673         cmd.args[3] = 0x00;
 674         cmd.args[4] = 0x00;
 675         cmd.args[5] = 0x01;
 676         cmd.args[6] = 0x01;
 677         cmd.args[7] = 0x01;
 678         cmd.args[8] = 0x00;
 679         cmd.args[9] = 0x05;
 680         cmd.args[10] = 0x02;
 681         cmd.args[11] = 0x02;
 682         cmd.args[12] = 0x00;
 683         cmd.len = 13;
 684         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 685         if (ret != 0)
 686                 goto error;
 687
 688         /* Global MPEG config */
 689         cmd.args[0] = CMD_GLOBAL_MPEGCFG;
 690         cmd.args[1] = 0x00;
 691         cmd.args[2] = 0x00;
 692         cmd.args[3] = 0x00;
 693         cmd.args[4] = 0x01;
 694         cmd.args[5] = 0x00;
 695         cmd.len = 6;
 696         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 697         if (ret != 0)
 698                 goto error;
 699
 700         /* MPEG config for each demod */
 701         for (i = 0; i < 2; i++) {
 702                 cmd.args[0] = CMD_MPEGCFG;
 703                 cmd.args[1] = (u8) i;
 704                 cmd.args[2] = 0x00;
 705                 cmd.args[3] = 0x05;
 706                 cmd.args[4] = 0x00;
 707                 cmd.args[5] = 0x00;
 708                 cmd.args[6] = 0x55;
 709                 cmd.args[7] = 0x00;
 710                 cmd.len = 8;
 711                 ret = cx24117_cmd_execute_nolock(fe, &cmd);
 712                 if (ret != 0)
 713                         goto error;
 714         }
 715
 716         cx24117_writereg(state, 0xce, 0xc0);
 717         cx24117_writereg(state, 0xcf, 0x00);
 718         cx24117_writereg(state, 0xe5, 0x04);
 719
 720         /* Get firmware version */
 721         cmd.args[0] = CMD_FWVERSION;
 722         cmd.len = 2;
 723         for (i = 0; i < 4; i++) {
 724                 cmd.args[1] = i;
 725                 ret = cx24117_cmd_execute_nolock(fe, &cmd);
 726                 if (ret != 0)
 727                         goto error;
 728                 vers[i] = cx24117_readreg(state, 0x33);
 729         }
 730         dev_info(&state->priv->i2c->dev,
 731                 "%s: FW version %i.%i.%i.%i\n", __func__,
 732                 vers[0], vers[1], vers[2], vers[3]);
 733         return 0;
 734 error:
 735         state->priv->skip_fw_load = 0;
 736         dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n", __func__);
 737         return ret;
 738 }
 739
 740 static int cx24117_read_status(struct dvb_frontend *fe, fe_status_t *status)
 741 {
 742         struct cx24117_state *state = fe->demodulator_priv;
 743         int lock;
 744
 745         lock = cx24117_readreg(state,
 746                 (state->demod == 0) ? CX24117_REG_SSTATUS0 :
 747                                       CX24117_REG_SSTATUS1) &
 748                 CX24117_STATUS_MASK;
 749
 750         dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
 751                 __func__, state->demod, lock);
 752
 753         *status = 0;
 754
 755         if (lock & CX24117_HAS_SIGNAL)
 756                 *status |= FE_HAS_SIGNAL;
 757         if (lock & CX24117_HAS_CARRIER)
 758                 *status |= FE_HAS_CARRIER;
 759         if (lock & CX24117_HAS_VITERBI)
 760                 *status |= FE_HAS_VITERBI;
 761         if (lock & CX24117_HAS_SYNCLOCK)
 762                 *status |= FE_HAS_SYNC | FE_HAS_LOCK;
 763
 764         return 0;
 765 }
 766
 767 static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
 768 {
 769         struct cx24117_state *state = fe->demodulator_priv;
 770         int ret;
 771         u8 buf[4];
 772         u8 base_reg = (state->demod == 0) ?
 773                         CX24117_REG_BER4_0 :
 774                         CX24117_REG_BER4_1;
 775
 776         ret = cx24117_readregN(state, base_reg, buf, 4);
 777         if (ret != 0)
 778                 return ret;
 779
 780         *ber = (buf[0] << 24) | (buf[1] << 16) |
 781                 (buf[1] << 8) | buf[0];
 782
 783         dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
 784                 __func__, state->demod, *ber);
 785
 786         return 0;
 787 }
 788
 789 static int cx24117_read_signal_strength(struct dvb_frontend *fe,
 790         u16 *signal_strength)
 791 {
 792         struct cx24117_state *state = fe->demodulator_priv;
 793         struct cx24117_cmd cmd;
 794         int ret;
 795         u16 sig_reading;
 796         u8 buf[2];
 797         u8 reg = (state->demod == 0) ?
 798                 CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
 799
 800         /* Read AGC accumulator register */
 801         cmd.args[0] = CMD_GET_AGCACC;
 802         cmd.args[1] = (u8) state->demod;
 803         cmd.len = 2;
 804         ret = cx24117_cmd_execute(fe, &cmd);
 805         if (ret != 0)
 806                 return ret;
 807
 808         ret = cx24117_readregN(state, reg, buf, 2);
 809         if (ret != 0)
 810                 return ret;
 811         sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
 812
 813         *signal_strength = -100 * sig_reading + 94324;
 814
 815         dev_dbg(&state->priv->i2c->dev,
 816                 "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
 817                 __func__, state->demod, sig_reading, *signal_strength);
 818
 819         return 0;
 820 }
 821
 822 static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
 823 {
 824         struct cx24117_state *state = fe->demodulator_priv;
 825         int ret;
 826         u8 buf[2];
 827         u8 reg = (state->demod == 0) ?
 828                 CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
 829
 830         ret = cx24117_readregN(state, reg, buf, 2);
 831         if (ret != 0)
 832                 return ret;
 833
 834         *snr = (buf[0] << 8) | buf[1];
 835
 836         dev_dbg(&state->priv->i2c->dev,
 837                 "%s() demod%d snr = 0x%04x\n",
 838                 __func__, state->demod, *snr);
 839
 840         return ret;
 841 }
 842
 843 static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 844 {
 845         struct cx24117_state *state = fe->demodulator_priv;
 846         fe_delivery_system_t delsys = fe->dtv_property_cache.delivery_system;
 847         int ret;
 848         u8 buf[2];
 849         u8 reg = (state->demod == 0) ?
 850                 CX24117_REG_DVBS_UCB2_0 :
 851                 CX24117_REG_DVBS_UCB2_1;
 852
 853         switch (delsys) {
 854         case SYS_DVBS:
 855                 break;
 856         case SYS_DVBS2:
 857                 reg += (CX24117_REG_DVBS2_UCB2_0 - CX24117_REG_DVBS_UCB2_0);
 858                 break;
 859         default:
 860                 return -EINVAL;
 861         }
 862
 863         ret = cx24117_readregN(state, reg, buf, 2);
 864         if (ret != 0)
 865                 return ret;
 866         *ucblocks = (buf[0] << 8) | buf[1];
 867
 868         dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
 869                 __func__, state->demod, *ucblocks);
 870
 871         return 0;
 872 }
 873
 874 /* Overwrite the current tuning params, we are about to tune */
 875 static void cx24117_clone_params(struct dvb_frontend *fe)
 876 {
 877         struct cx24117_state *state = fe->demodulator_priv;
 878         state->dcur = state->dnxt;
 879 }
 880
 881 /* Wait for LNB */
 882 static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
 883 {
 884         struct cx24117_state *state = fe->demodulator_priv;
 885         int i;
 886         u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
 887                                             CX24117_REG_QSTATUS1;
 888
 889         dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
 890                 __func__, state->demod, cx24117_readreg(state, reg));
 891
 892         /* Wait for up to 300 ms */
 893         for (i = 0; i < 10; i++) {
 894                 val = cx24117_readreg(state, reg) & 0x01;
 895                 if (val != 0)
 896                         return 0;
 897                 msleep(30);
 898         }
 899
 900         dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
 901                 KBUILD_MODNAME, state->demod);
 902
 903         return -ETIMEDOUT; /* -EBUSY ? */
 904 }
 905
 906 static int cx24117_set_voltage(struct dvb_frontend *fe,
 907         fe_sec_voltage_t voltage)
 908 {
 909         struct cx24117_state *state = fe->demodulator_priv;
 910         struct cx24117_cmd cmd;
 911         int ret;
 912         u8 reg = (state->demod == 0) ? 0x10 : 0x20;
 913
 914         dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
 915                 __func__, state->demod,
 916                 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 917                 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
 918                 "SEC_VOLTAGE_OFF");
 919
 920         /* Prepare a set GPIO logic level CMD */
 921         cmd.args[0] = CMD_SET_GPIOOUT;
 922         cmd.args[2] = reg; /* mask */
 923         cmd.len = 3;
 924
 925         if ((voltage == SEC_VOLTAGE_13) ||
 926             (voltage == SEC_VOLTAGE_18)) {
 927                 /* power on LNB */
 928                 cmd.args[1] = reg;
 929                 ret = cx24117_cmd_execute(fe, &cmd);
 930                 if (ret != 0)
 931                         return ret;
 932
 933                 ret = cx24117_wait_for_lnb(fe);
 934                 if (ret != 0)
 935                         return ret;
 936
 937                 /* Wait for voltage/min repeat delay */
 938                 msleep(100);
 939
 940                 /* Set 13V/18V select pin */
 941                 cmd.args[0] = CMD_LNBDCLEVEL;
 942                 cmd.args[1] = state->demod ? 0 : 1;
 943                 cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
 944                 cmd.len = 3;
 945                 ret = cx24117_cmd_execute(fe, &cmd);
 946
 947                 /* Min delay time before DiSEqC send */
 948                 msleep(20);
 949         } else {
 950                 /* power off LNB */
 951                 cmd.args[1] = 0x00;
 952                 ret = cx24117_cmd_execute(fe, &cmd);
 953         }
 954
 955         return ret;
 956 }
 957
 958 static int cx24117_set_tone(struct dvb_frontend *fe,
 959         fe_sec_tone_mode_t tone)
 960 {
 961         struct cx24117_state *state = fe->demodulator_priv;
 962         struct cx24117_cmd cmd;
 963         int ret;
 964
 965         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 966                 __func__, state->demod, tone);
 967         if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
 968                 dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid tone=%d\n",
 969                         KBUILD_MODNAME, state->demod, tone);
 970                 return -EINVAL;
 971         }
 972
 973         /* Wait for LNB ready */
 974         ret = cx24117_wait_for_lnb(fe);
 975         if (ret != 0)
 976                 return ret;
 977
 978         /* Min delay time after DiSEqC send */
 979         msleep(20);
 980
 981         /* Set the tone */
 982         cmd.args[0] = CMD_LNBPCBCONFIG;
 983         cmd.args[1] = (state->demod ? 0 : 1);
 984         cmd.args[2] = 0x00;
 985         cmd.args[3] = 0x00;
 986         cmd.len = 5;
 987         switch (tone) {
 988         case SEC_TONE_ON:
 989                 cmd.args[4] = 0x01;
 990                 break;
 991         case SEC_TONE_OFF:
 992                 cmd.args[4] = 0x00;
 993                 break;
 994         }
 995
 996         msleep(20);
 997
 998         return cx24117_cmd_execute(fe, &cmd);
 999 }
1000
1001 /* Initialise DiSEqC */
1002 static int cx24117_diseqc_init(struct dvb_frontend *fe)
1003 {
1004         struct cx24117_state *state = fe->demodulator_priv;
1005
1006         /* Prepare a DiSEqC command */
1007         state->dsec_cmd.args[0] = CMD_LNBSEND;
1008
1009         /* demod */
1010         state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
1011
1012         /* DiSEqC burst */
1013         state->dsec_cmd.args[CX24117_DISEQC_BURST] = CX24117_DISEQC_MINI_A;
1014
1015         /* Unknown */
1016         state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
1017         state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
1018
1019         /* Continuation flag? */
1020         state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
1021
1022         /* DiSEqC message length */
1023         state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
1024
1025         /* Command length */
1026         state->dsec_cmd.len = 7;
1027
1028         return 0;
1029 }
1030
1031 /* Send DiSEqC message */
1032 static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
1033         struct dvb_diseqc_master_cmd *d)
1034 {
1035         struct cx24117_state *state = fe->demodulator_priv;
1036         int i, ret;
1037
1038         /* Dump DiSEqC message */
1039         dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
1040                 __func__, state->demod);
1041         for (i = 0; i < d->msg_len; i++)
1042                 dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
1043         dev_dbg(&state->priv->i2c->dev, ")\n");
1044
1045         /* Validate length */
1046         if (d->msg_len > 15)
1047                 return -EINVAL;
1048
1049         /* DiSEqC message */
1050         for (i = 0; i < d->msg_len; i++)
1051                 state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] = d->msg[i];
1052
1053         /* DiSEqC message length */
1054         state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
1055
1056         /* Command length */
1057         state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
1058                 state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
1059
1060         /*
1061          * Message is sent with derived else cached burst
1062          *
1063          * WRITE PORT GROUP COMMAND 38
1064          *
1065          * 0/A/A: E0 10 38 F0..F3
1066          * 1/B/B: E0 10 38 F4..F7
1067          * 2/C/A: E0 10 38 F8..FB
1068          * 3/D/B: E0 10 38 FC..FF
1069          *
1070          * databyte[3]= 8421:8421
1071          *              ABCD:WXYZ
1072          *              CLR :SET
1073          *
1074          *              WX= PORT SELECT 0..3    (X=TONEBURST)
1075          *              Y = VOLTAGE             (0=13V, 1=18V)
1076          *              Z = BAND                (0=LOW, 1=HIGH(22K))
1077          */
1078         if (d->msg_len >= 4 && d->msg[2] == 0x38)
1079                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1080                         ((d->msg[3] & 4) >> 2);
1081
1082         dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
1083                 __func__, state->demod,
1084                 state->dsec_cmd.args[CX24117_DISEQC_BURST]);
1085
1086         /* Wait for LNB ready */
1087         ret = cx24117_wait_for_lnb(fe);
1088         if (ret != 0)
1089                 return ret;
1090
1091         /* Wait for voltage/min repeat delay */
1092         msleep(100);
1093
1094         /* Command */
1095         ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
1096         if (ret != 0)
1097                 return ret;
1098         /*
1099          * Wait for send
1100          *
1101          * Eutelsat spec:
1102          * >15ms delay          + (XXX determine if FW does this, see set_tone)
1103          *  13.5ms per byte     +
1104          * >15ms delay          +
1105          *  12.5ms burst        +
1106          * >15ms delay            (XXX determine if FW does this, see set_tone)
1107          */
1108         msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
1109
1110         return 0;
1111 }
1112
1113 /* Send DiSEqC burst */
1114 static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
1115         fe_sec_mini_cmd_t burst)
1116 {
1117         struct cx24117_state *state = fe->demodulator_priv;
1118
1119         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
1120                 __func__, burst, state->demod);
1121
1122         /* DiSEqC burst */
1123         if (burst == SEC_MINI_A)
1124                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1125                         CX24117_DISEQC_MINI_A;
1126         else if (burst == SEC_MINI_B)
1127                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1128                         CX24117_DISEQC_MINI_B;
1129         else
1130                 return -EINVAL;
1131
1132         return 0;
1133 }
1134
1135 static int cx24117_get_priv(struct cx24117_priv **priv,
1136         struct i2c_adapter *i2c, u8 client_address)
1137 {
1138         int ret;
1139
1140         mutex_lock(&cx24117_list_mutex);
1141         ret = hybrid_tuner_request_state(struct cx24117_priv, (*priv),
1142                 hybrid_tuner_instance_list, i2c, client_address, "cx24117");
1143         mutex_unlock(&cx24117_list_mutex);
1144
1145         return ret;
1146 }
1147
1148 static void cx24117_release_priv(struct cx24117_priv *priv)
1149 {
1150         mutex_lock(&cx24117_list_mutex);
1151         if (priv != NULL)
1152                 hybrid_tuner_release_state(priv);
1153         mutex_unlock(&cx24117_list_mutex);
1154 }
1155
1156 static void cx24117_release(struct dvb_frontend *fe)
1157 {
1158         struct cx24117_state *state = fe->demodulator_priv;
1159         dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
1160                 __func__, state->demod);
1161         cx24117_release_priv(state->priv);
1162         kfree(state);
1163 }
1164
1165 static struct dvb_frontend_ops cx24117_ops;
1166
1167 struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
1168         struct i2c_adapter *i2c)
1169 {
1170         struct cx24117_state *state = NULL;
1171         struct cx24117_priv *priv = NULL;
1172         int demod = 0;
1173
1174         /* get the common data struct for both demods */
1175         demod = cx24117_get_priv(&priv, i2c, config->demod_address);
1176
1177         switch (demod) {
1178         case 0:
1179                 dev_err(&i2c->dev,
1180                         "%s: Error attaching frontend %d\n",
1181                         KBUILD_MODNAME, demod);
1182                 goto error1;
1183                 break;
1184         case 1:
1185                 /* new priv instance */
1186                 priv->i2c = i2c;
1187                 priv->demod_address = config->demod_address;
1188                 mutex_init(&priv->fe_lock);
1189                 break;
1190         default:
1191                 /* existing priv instance */
1192                 break;
1193         }
1194
1195         /* allocate memory for the internal state */
1196         state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1197         if (state == NULL)
1198                 goto error2;
1199
1200         state->demod = demod - 1;
1201         state->priv = priv;
1202
1203         dev_info(&state->priv->i2c->dev,
1204                 "%s: Attaching frontend %d\n",
1205                 KBUILD_MODNAME, state->demod);
1206
1207         /* create dvb_frontend */
1208         memcpy(&state->frontend.ops, &cx24117_ops,
1209                 sizeof(struct dvb_frontend_ops));
1210         state->frontend.demodulator_priv = state;
1211         return &state->frontend;
1212
1213 error2:
1214         cx24117_release_priv(priv);
1215 error1:
1216         return NULL;
1217 }
1218 EXPORT_SYMBOL_GPL(cx24117_attach);
1219
1220 /*
1221  * Initialise or wake up device
1222  *
1223  * Power config will reset and load initial firmware if required
1224  */
1225 static int cx24117_initfe(struct dvb_frontend *fe)
1226 {
1227         struct cx24117_state *state = fe->demodulator_priv;
1228         struct cx24117_cmd cmd;
1229         int ret;
1230
1231         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1232                 __func__, state->demod);
1233
1234         mutex_lock(&state->priv->fe_lock);
1235
1236         /* Set sleep mode off */
1237         cmd.args[0] = CMD_SET_SLEEPMODE;
1238         cmd.args[1] = (state->demod ? 1 : 0);
1239         cmd.args[2] = 0;
1240         cmd.len = 3;
1241         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1242         if (ret != 0)
1243                 goto exit;
1244
1245         ret = cx24117_diseqc_init(fe);
1246         if (ret != 0)
1247                 goto exit;
1248
1249         /* Set BER control */
1250         cmd.args[0] = CMD_BERCTRL;
1251         cmd.args[1] = (state->demod ? 1 : 0);
1252         cmd.args[2] = 0x10;
1253         cmd.args[3] = 0x10;
1254         cmd.len = 4;
1255         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1256         if (ret != 0)
1257                 goto exit;
1258
1259         /* Set RS correction (enable/disable) */
1260         cmd.args[0] = CMD_ENABLERSCORR;
1261         cmd.args[1] = (state->demod ? 1 : 0);
1262         cmd.args[2] = CX24117_OCC;
1263         cmd.len = 3;
1264         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1265         if (ret != 0)
1266                 goto exit;
1267
1268         /* Set GPIO direction */
1269         /* Set as output - controls LNB power on/off */
1270         cmd.args[0] = CMD_SET_GPIODIR;
1271         cmd.args[1] = 0x30;
1272         cmd.args[2] = 0x30;
1273         cmd.len = 3;
1274         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1275
1276 exit:
1277         mutex_unlock(&state->priv->fe_lock);
1278
1279         return ret;
1280 }
1281
1282 /*
1283  * Put device to sleep
1284  */
1285 static int cx24117_sleep(struct dvb_frontend *fe)
1286 {
1287         struct cx24117_state *state = fe->demodulator_priv;
1288         struct cx24117_cmd cmd;
1289
1290         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1291                 __func__, state->demod);
1292
1293         /* Set sleep mode on */
1294         cmd.args[0] = CMD_SET_SLEEPMODE;
1295         cmd.args[1] = (state->demod ? 1 : 0);
1296         cmd.args[2] = 1;
1297         cmd.len = 3;
1298         return cx24117_cmd_execute(fe, &cmd);
1299 }
1300
1301 /* dvb-core told us to tune, the tv property cache will be complete,
1302  * it's safe for is to pull values and use them for tuning purposes.
1303  */
1304 static int cx24117_set_frontend(struct dvb_frontend *fe)
1305 {
1306         struct cx24117_state *state = fe->demodulator_priv;
1307         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1308         struct cx24117_cmd cmd;
1309         fe_status_t tunerstat;
1310         int i, status, ret, retune = 1;
1311         u8 reg_clkdiv, reg_ratediv;
1312
1313         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1314                 __func__, state->demod);
1315
1316         switch (c->delivery_system) {
1317         case SYS_DVBS:
1318                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1319                         __func__, state->demod);
1320
1321                 /* Only QPSK is supported for DVB-S */
1322                 if (c->modulation != QPSK) {
1323                         dev_dbg(&state->priv->i2c->dev,
1324                                 "%s() demod%d unsupported modulation (%d)\n",
1325                                 __func__, state->demod, c->modulation);
1326                         return -EINVAL;
1327                 }
1328
1329                 /* Pilot doesn't exist in DVB-S, turn bit off */
1330                 state->dnxt.pilot_val = CX24117_PILOT_OFF;
1331
1332                 /* DVB-S only supports 0.35 */
1333                 state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1334                 break;
1335
1336         case SYS_DVBS2:
1337                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1338                         __func__, state->demod);
1339
1340                 /*
1341                  * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1342                  * but not hardware auto detection
1343                  */
1344                 if (c->modulation != PSK_8 && c->modulation != QPSK) {
1345                         dev_dbg(&state->priv->i2c->dev,
1346                                 "%s() demod%d unsupported modulation (%d)\n",
1347                                 __func__, state->demod, c->modulation);
1348                         return -EOPNOTSUPP;
1349                 }
1350
1351                 switch (c->pilot) {
1352                 case PILOT_AUTO:
1353                         state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1354                         break;
1355                 case PILOT_OFF:
1356                         state->dnxt.pilot_val = CX24117_PILOT_OFF;
1357                         break;
1358                 case PILOT_ON:
1359                         state->dnxt.pilot_val = CX24117_PILOT_ON;
1360                         break;
1361                 default:
1362                         dev_dbg(&state->priv->i2c->dev,
1363                                 "%s() demod%d unsupported pilot mode (%d)\n",
1364                                 __func__, state->demod, c->pilot);
1365                         return -EOPNOTSUPP;
1366                 }
1367
1368                 switch (c->rolloff) {
1369                 case ROLLOFF_20:
1370                         state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1371                         break;
1372                 case ROLLOFF_25:
1373                         state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1374                         break;
1375                 case ROLLOFF_35:
1376                         state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1377                         break;
1378                 case ROLLOFF_AUTO:
1379                         state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1380                         /* soft-auto rolloff */
1381                         retune = 3;
1382                         break;
1383                 default:
1384                         dev_warn(&state->priv->i2c->dev,
1385                                 "%s: demod%d unsupported rolloff (%d)\n",
1386                                 KBUILD_MODNAME, state->demod, c->rolloff);
1387                         return -EOPNOTSUPP;
1388                 }
1389                 break;
1390
1391         default:
1392                 dev_warn(&state->priv->i2c->dev,
1393                         "%s: demod %d unsupported delivery system (%d)\n",
1394                         KBUILD_MODNAME, state->demod, c->delivery_system);
1395                 return -EINVAL;
1396         }
1397
1398         state->dnxt.delsys = c->delivery_system;
1399         state->dnxt.modulation = c->modulation;
1400         state->dnxt.frequency = c->frequency;
1401         state->dnxt.pilot = c->pilot;
1402         state->dnxt.rolloff = c->rolloff;
1403
1404         ret = cx24117_set_inversion(state, c->inversion);
1405         if (ret !=  0)
1406                 return ret;
1407
1408         ret = cx24117_set_fec(state,
1409                 c->delivery_system, c->modulation, c->fec_inner);
1410         if (ret !=  0)
1411                 return ret;
1412
1413         ret = cx24117_set_symbolrate(state, c->symbol_rate);
1414         if (ret !=  0)
1415                 return ret;
1416
1417         /* discard the 'current' tuning parameters and prepare to tune */
1418         cx24117_clone_params(fe);
1419
1420         dev_dbg(&state->priv->i2c->dev,
1421                 "%s: delsys      = %d\n", __func__, state->dcur.delsys);
1422         dev_dbg(&state->priv->i2c->dev,
1423                 "%s: modulation  = %d\n", __func__, state->dcur.modulation);
1424         dev_dbg(&state->priv->i2c->dev,
1425                 "%s: frequency   = %d\n", __func__, state->dcur.frequency);
1426         dev_dbg(&state->priv->i2c->dev,
1427                 "%s: pilot       = %d (val = 0x%02x)\n", __func__,
1428                 state->dcur.pilot, state->dcur.pilot_val);
1429         dev_dbg(&state->priv->i2c->dev,
1430                 "%s: retune      = %d\n", __func__, retune);
1431         dev_dbg(&state->priv->i2c->dev,
1432                 "%s: rolloff     = %d (val = 0x%02x)\n", __func__,
1433                 state->dcur.rolloff, state->dcur.rolloff_val);
1434         dev_dbg(&state->priv->i2c->dev,
1435                 "%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1436         dev_dbg(&state->priv->i2c->dev,
1437                 "%s: FEC         = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1438                 state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1439         dev_dbg(&state->priv->i2c->dev,
1440                 "%s: Inversion   = %d (val = 0x%02x)\n", __func__,
1441                 state->dcur.inversion, state->dcur.inversion_val);
1442
1443         /* Prepare a tune request */
1444         cmd.args[0] = CMD_TUNEREQUEST;
1445
1446         /* demod */
1447         cmd.args[1] = state->demod;
1448
1449         /* Frequency */
1450         cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1451         cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1452         cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1453
1454         /* Symbol Rate */
1455         cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1456         cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1457
1458         /* Automatic Inversion */
1459         cmd.args[7] = state->dcur.inversion_val;
1460
1461         /* Modulation / FEC / Pilot */
1462         cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1463
1464         cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1465         cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1466
1467         cmd.args[11] = state->dcur.rolloff_val;
1468         cmd.args[12] = state->dcur.fec_mask;
1469
1470         if (state->dcur.symbol_rate > 30000000) {
1471                 reg_ratediv = 0x04;
1472                 reg_clkdiv = 0x02;
1473         } else if (state->dcur.symbol_rate > 10000000) {
1474                 reg_ratediv = 0x06;
1475                 reg_clkdiv = 0x03;
1476         } else {
1477                 reg_ratediv = 0x0a;
1478                 reg_clkdiv = 0x05;
1479         }
1480
1481         cmd.args[13] = reg_ratediv;
1482         cmd.args[14] = reg_clkdiv;
1483
1484         cx24117_writereg(state, (state->demod == 0) ?
1485                 CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1486         cx24117_writereg(state, (state->demod == 0) ?
1487                 CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1488
1489         cmd.args[15] = CX24117_PNE;
1490         cmd.len = 16;
1491
1492         do {
1493                 /* Reset status register */
1494                 status = cx24117_readreg(state, (state->demod == 0) ?
1495                         CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1496                         CX24117_SIGNAL_MASK;
1497
1498                 dev_dbg(&state->priv->i2c->dev,
1499                         "%s() demod%d status_setfe = %02x\n",
1500                         __func__, state->demod, status);
1501
1502                 cx24117_writereg(state, (state->demod == 0) ?
1503                         CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1504
1505                 /* Tune */
1506                 ret = cx24117_cmd_execute(fe, &cmd);
1507                 if (ret != 0)
1508                         break;
1509
1510                 /*
1511                  * Wait for up to 500 ms before retrying
1512                  *
1513                  * If we are able to tune then generally it occurs within 100ms.
1514                  * If it takes longer, try a different rolloff setting.
1515                  */
1516                 for (i = 0; i < 50; i++) {
1517                         cx24117_read_status(fe, &tunerstat);
1518                         status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1519                         if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1520                                 dev_dbg(&state->priv->i2c->dev,
1521                                         "%s() demod%d tuned\n",
1522                                         __func__, state->demod);
1523                                 return 0;
1524                         }
1525                         msleep(20);
1526                 }
1527
1528                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1529                         __func__, state->demod);
1530
1531                 /* try next rolloff value */
1532                 if (state->dcur.rolloff == 3)
1533                         cmd.args[11]--;
1534
1535         } while (--retune);
1536         return -EINVAL;
1537 }
1538
1539 static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1540         unsigned int mode_flags, unsigned int *delay, fe_status_t *status)
1541 {
1542         struct cx24117_state *state = fe->demodulator_priv;
1543
1544         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1545                 __func__, state->demod);
1546
1547         *delay = HZ / 5;
1548         if (re_tune) {
1549                 int ret = cx24117_set_frontend(fe);
1550                 if (ret)
1551                         return ret;
1552         }
1553         return cx24117_read_status(fe, status);
1554 }
1555
1556 static int cx24117_get_algo(struct dvb_frontend *fe)
1557 {
1558         return DVBFE_ALGO_HW;
1559 }
1560
1561 static int cx24117_get_frontend(struct dvb_frontend *fe)
1562 {
1563         struct cx24117_state *state = fe->demodulator_priv;
1564         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1565         struct cx24117_cmd cmd;
1566         u8 reg, st, inv;
1567         int ret, idx;
1568         unsigned int freq;
1569         short srate_os, freq_os;
1570
1571         u8 buf[0x1f-4];
1572
1573         /* Read current tune parameters */
1574         cmd.args[0] = CMD_GETCTLACC;
1575         cmd.args[1] = (u8) state->demod;
1576         cmd.len = 2;
1577         ret = cx24117_cmd_execute(fe, &cmd);
1578         if (ret != 0)
1579                 return ret;
1580
1581         /* read all required regs at once */
1582         reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1583         ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1584         if (ret != 0)
1585                 return ret;
1586
1587         st = buf[5];
1588
1589         /* get spectral inversion */
1590         inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1591         if (inv == 0)
1592                 c->inversion = INVERSION_OFF;
1593         else
1594                 c->inversion = INVERSION_ON;
1595
1596         /* modulation and fec */
1597         idx = st & 0x3f;
1598         if (c->delivery_system == SYS_DVBS2) {
1599                 if (idx > 11)
1600                         idx += 9;
1601                 else
1602                         idx += 7;
1603         }
1604
1605         c->modulation = cx24117_modfec_modes[idx].modulation;
1606         c->fec_inner = cx24117_modfec_modes[idx].fec;
1607
1608         /* frequency */
1609         freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1610         freq_os = (buf[8] << 8) | buf[9];
1611         c->frequency = freq + freq_os;
1612
1613         /* symbol rate */
1614         srate_os = (buf[10] << 8) | buf[11];
1615         c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1616         return 0;
1617 }
1618
1619 static struct dvb_frontend_ops cx24117_ops = {
1620         .delsys = { SYS_DVBS, SYS_DVBS2 },
1621         .info = {
1622                 .name = "Conexant CX24117/CX24132",
1623                 .frequency_min = 950000,
1624                 .frequency_max = 2150000,
1625                 .frequency_stepsize = 1011, /* kHz for QPSK frontends */
1626                 .frequency_tolerance = 5000,
1627                 .symbol_rate_min = 1000000,
1628                 .symbol_rate_max = 45000000,
1629                 .caps = FE_CAN_INVERSION_AUTO |
1630                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1631                         FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1632                         FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1633                         FE_CAN_2G_MODULATION |
1634                         FE_CAN_QPSK | FE_CAN_RECOVER
1635         },
1636
1637         .release = cx24117_release,
1638
1639         .init = cx24117_initfe,
1640         .sleep = cx24117_sleep,
1641         .read_status = cx24117_read_status,
1642         .read_ber = cx24117_read_ber,
1643         .read_signal_strength = cx24117_read_signal_strength,
1644         .read_snr = cx24117_read_snr,
1645         .read_ucblocks = cx24117_read_ucblocks,
1646         .set_tone = cx24117_set_tone,
1647         .set_voltage = cx24117_set_voltage,
1648         .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1649         .diseqc_send_burst = cx24117_diseqc_send_burst,
1650         .get_frontend_algo = cx24117_get_algo,
1651         .tune = cx24117_tune,
1652
1653         .set_frontend = cx24117_set_frontend,
1654         .get_frontend = cx24117_get_frontend,
1655 };
1656
1657
1658 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1659 MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1660 MODULE_LICENSE("GPL");
1661 MODULE_VERSION("1.1");
1662 MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1663