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_VCO     = 0x10,
 139         CMD_TUNEREQUEST = 0x11,
 140         CMD_MPEGCONFIG  = 0x13,
 141         CMD_TUNERINIT   = 0x14,
 142         CMD_LNBSEND     = 0x21, /* Formerly CMD_SEND_DISEQC */
 143         CMD_LNBDCLEVEL  = 0x22,
 144         CMD_SET_TONE    = 0x23,
 145         CMD_UPDFWVERS   = 0x35,
 146         CMD_TUNERSLEEP  = 0x36,
 147 };
 148
 149 static LIST_HEAD(hybrid_tuner_instance_list);
 150 static DEFINE_MUTEX(cx24117_list_mutex);
 151
 152 /* The Demod/Tuner can't easily provide these, we cache them */
 153 struct cx24117_tuning {
 154         u32 frequency;
 155         u32 symbol_rate;
 156         fe_spectral_inversion_t inversion;
 157         fe_code_rate_t fec;
 158
 159         fe_delivery_system_t delsys;
 160         fe_modulation_t modulation;
 161         fe_pilot_t pilot;
 162         fe_rolloff_t rolloff;
 163
 164         /* Demod values */
 165         u8 fec_val;
 166         u8 fec_mask;
 167         u8 inversion_val;
 168         u8 pilot_val;
 169         u8 rolloff_val;
 170 };
 171
 172 /* Basic commands that are sent to the firmware */
 173 struct cx24117_cmd {
 174         u8 len;
 175         u8 args[CX24117_ARGLEN];
 176 };
 177
 178 /* common to both fe's */
 179 struct cx24117_priv {
 180         u8 demod_address;
 181         struct i2c_adapter *i2c;
 182         u8 skip_fw_load;
 183         struct mutex fe_lock;
 184
 185         /* Used for sharing this struct between demods */
 186         struct tuner_i2c_props i2c_props;
 187         struct list_head hybrid_tuner_instance_list;
 188 };
 189
 190 /* one per each fe */
 191 struct cx24117_state {
 192         struct cx24117_priv *priv;
 193         struct dvb_frontend frontend;
 194
 195         struct cx24117_tuning dcur;
 196         struct cx24117_tuning dnxt;
 197         struct cx24117_cmd dsec_cmd;
 198
 199         int demod;
 200 };
 201
 202 /* modfec (modulation and FEC) lookup table */
 203 /* Check cx24116.c for a detailed description of each field */
 204 static struct cx24117_modfec {
 205         fe_delivery_system_t delivery_system;
 206         fe_modulation_t modulation;
 207         fe_code_rate_t fec;
 208         u8 mask;        /* In DVBS mode this is used to autodetect */
 209         u8 val;         /* Passed to the firmware to indicate mode selection */
 210 } cx24117_modfec_modes[] = {
 211         /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
 212
 213         /*mod   fec       mask  val */
 214         { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
 215         { SYS_DVBS, QPSK, FEC_1_2,  0x02, 0x2e }, /* 00000010 00101110 */
 216         { SYS_DVBS, QPSK, FEC_2_3,  0x04, 0x2f }, /* 00000100 00101111 */
 217         { SYS_DVBS, QPSK, FEC_3_4,  0x08, 0x30 }, /* 00001000 00110000 */
 218         { SYS_DVBS, QPSK, FEC_4_5,  0xfe, 0x30 }, /* 000?0000 ?        */
 219         { SYS_DVBS, QPSK, FEC_5_6,  0x20, 0x31 }, /* 00100000 00110001 */
 220         { SYS_DVBS, QPSK, FEC_6_7,  0xfe, 0x30 }, /* 0?000000 ?        */
 221         { SYS_DVBS, QPSK, FEC_7_8,  0x80, 0x32 }, /* 10000000 00110010 */
 222         { SYS_DVBS, QPSK, FEC_8_9,  0xfe, 0x30 }, /* 0000000? ?        */
 223         { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
 224         /* NBC-QPSK */
 225         { SYS_DVBS2, QPSK, FEC_NONE, 0x00, 0x00 },
 226         { SYS_DVBS2, QPSK, FEC_1_2,  0x00, 0x04 },
 227         { SYS_DVBS2, QPSK, FEC_3_5,  0x00, 0x05 },
 228         { SYS_DVBS2, QPSK, FEC_2_3,  0x00, 0x06 },
 229         { SYS_DVBS2, QPSK, FEC_3_4,  0x00, 0x07 },
 230         { SYS_DVBS2, QPSK, FEC_4_5,  0x00, 0x08 },
 231         { SYS_DVBS2, QPSK, FEC_5_6,  0x00, 0x09 },
 232         { SYS_DVBS2, QPSK, FEC_8_9,  0x00, 0x0a },
 233         { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
 234         { SYS_DVBS2, QPSK, FEC_AUTO, 0x00, 0x00 },
 235         /* 8PSK */
 236         { SYS_DVBS2, PSK_8, FEC_NONE, 0x00, 0x00 },
 237         { SYS_DVBS2, PSK_8, FEC_3_5,  0x00, 0x0c },
 238         { SYS_DVBS2, PSK_8, FEC_2_3,  0x00, 0x0d },
 239         { SYS_DVBS2, PSK_8, FEC_3_4,  0x00, 0x0e },
 240         { SYS_DVBS2, PSK_8, FEC_5_6,  0x00, 0x0f },
 241         { SYS_DVBS2, PSK_8, FEC_8_9,  0x00, 0x10 },
 242         { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
 243         { SYS_DVBS2, PSK_8, FEC_AUTO, 0x00, 0x00 },
 244         /*
 245          * 'val' can be found in the FECSTATUS register when tuning.
 246          * FECSTATUS will give the actual FEC in use if tuning was successful.
 247          */
 248 };
 249
 250
 251 static int cx24117_writereg(struct cx24117_state *state, u8 reg, u8 data)
 252 {
 253         u8 buf[] = { reg, data };
 254         struct i2c_msg msg = { .addr = state->priv->demod_address,
 255                 .flags = 0, .buf = buf, .len = 2 };
 256         int ret;
 257
 258         dev_dbg(&state->priv->i2c->dev,
 259                         "%s() demod%d i2c wr @0x%02x=0x%02x\n",
 260                         __func__, state->demod, reg, data);
 261
 262         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 263         if (ret < 0) {
 264                 dev_warn(&state->priv->i2c->dev,
 265                         "%s: demod%d i2c wr err(%i) @0x%02x=0x%02x\n",
 266                         KBUILD_MODNAME, state->demod, ret, reg, data);
 267                 return ret;
 268         }
 269         return 0;
 270 }
 271
 272 static int cx24117_writecmd(struct cx24117_state *state,
 273         struct cx24117_cmd *cmd)
 274 {
 275         struct i2c_msg msg;
 276         u8 buf[CX24117_ARGLEN+1];
 277         int ret;
 278
 279         dev_dbg(&state->priv->i2c->dev,
 280                         "%s() demod%d i2c wr cmd len=%d\n",
 281                         __func__, state->demod, cmd->len);
 282
 283         buf[0] = CX24117_REG_COMMAND;
 284         memcpy(&buf[1], cmd->args, cmd->len);
 285
 286         msg.addr = state->priv->demod_address;
 287         msg.flags = 0;
 288         msg.len = cmd->len+1;
 289         msg.buf = buf;
 290         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 291         if (ret < 0) {
 292                 dev_warn(&state->priv->i2c->dev,
 293                         "%s: demod%d i2c wr cmd err(%i) len=%d\n",
 294                         KBUILD_MODNAME, state->demod, ret, cmd->len);
 295                 return ret;
 296         }
 297         return 0;
 298 }
 299
 300 static int cx24117_readreg(struct cx24117_state *state, u8 reg)
 301 {
 302         int ret;
 303         u8 recv = 0;
 304         struct i2c_msg msg[] = {
 305                 { .addr = state->priv->demod_address, .flags = 0,
 306                         .buf = &reg, .len = 1 },
 307                 { .addr = state->priv->demod_address, .flags = I2C_M_RD,
 308                         .buf = &recv, .len = 1 }
 309         };
 310
 311         ret = i2c_transfer(state->priv->i2c, msg, 2);
 312         if (ret < 0) {
 313                 dev_warn(&state->priv->i2c->dev,
 314                         "%s: demod%d i2c rd err(%d) @0x%x\n",
 315                         KBUILD_MODNAME, state->demod, ret, reg);
 316                 return ret;
 317         }
 318
 319         dev_dbg(&state->priv->i2c->dev, "%s() demod%d i2c rd @0x%02x=0x%02x\n",
 320                 __func__, state->demod, reg, recv);
 321
 322         return recv;
 323 }
 324
 325 static int cx24117_readregN(struct cx24117_state *state,
 326         u8 reg, u8 *buf, int len)
 327 {
 328         int ret;
 329         struct i2c_msg msg[] = {
 330                 { .addr = state->priv->demod_address, .flags = 0,
 331                         .buf = &reg, .len = 1 },
 332                 { .addr = state->priv->demod_address, .flags = I2C_M_RD,
 333                         .buf = buf, .len = len }
 334         };
 335
 336         ret = i2c_transfer(state->priv->i2c, msg, 2);
 337         if (ret < 0) {
 338                 dev_warn(&state->priv->i2c->dev,
 339                         "%s: demod%d i2c rd err(%d) @0x%x\n",
 340                         KBUILD_MODNAME, state->demod, ret, reg);
 341                 return ret;
 342         }
 343         return 0;
 344 }
 345
 346 static int cx24117_set_inversion(struct cx24117_state *state,
 347         fe_spectral_inversion_t inversion)
 348 {
 349         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 350                 __func__, inversion, state->demod);
 351
 352         switch (inversion) {
 353         case INVERSION_OFF:
 354                 state->dnxt.inversion_val = 0x00;
 355                 break;
 356         case INVERSION_ON:
 357                 state->dnxt.inversion_val = 0x04;
 358                 break;
 359         case INVERSION_AUTO:
 360                 state->dnxt.inversion_val = 0x0C;
 361                 break;
 362         default:
 363                 return -EINVAL;
 364         }
 365
 366         state->dnxt.inversion = inversion;
 367
 368         return 0;
 369 }
 370
 371 static int cx24117_lookup_fecmod(struct cx24117_state *state,
 372         fe_delivery_system_t d, fe_modulation_t m, fe_code_rate_t f)
 373 {
 374         int i, ret = -EINVAL;
 375
 376         dev_dbg(&state->priv->i2c->dev,
 377                 "%s(demod(0x%02x,0x%02x) demod%d\n",
 378                 __func__, m, f, state->demod);
 379
 380         for (i = 0; i < ARRAY_SIZE(cx24117_modfec_modes); i++) {
 381                 if ((d == cx24117_modfec_modes[i].delivery_system) &&
 382                         (m == cx24117_modfec_modes[i].modulation) &&
 383                         (f == cx24117_modfec_modes[i].fec)) {
 384                                 ret = i;
 385                                 break;
 386                         }
 387         }
 388
 389         return ret;
 390 }
 391
 392 static int cx24117_set_fec(struct cx24117_state *state,
 393         fe_delivery_system_t delsys, fe_modulation_t mod, fe_code_rate_t fec)
 394 {
 395         int ret;
 396
 397         dev_dbg(&state->priv->i2c->dev,
 398                 "%s(0x%02x,0x%02x) demod%d\n",
 399                 __func__, mod, fec, state->demod);
 400
 401         ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
 402         if (ret < 0)
 403                 return ret;
 404
 405         state->dnxt.fec = fec;
 406         state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
 407         state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
 408         dev_dbg(&state->priv->i2c->dev,
 409                 "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
 410                 state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
 411
 412         return 0;
 413 }
 414
 415 static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
 416 {
 417         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 418                 __func__, rate, state->demod);
 419
 420         state->dnxt.symbol_rate = rate;
 421
 422         dev_dbg(&state->priv->i2c->dev,
 423                 "%s() demod%d symbol_rate = %d\n",
 424                 __func__, state->demod, rate);
 425
 426         return 0;
 427 }
 428
 429 static int cx24117_load_firmware(struct dvb_frontend *fe,
 430         const struct firmware *fw);
 431
 432 static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
 433 {
 434         struct cx24117_state *state = fe->demodulator_priv;
 435         const struct firmware *fw;
 436         int ret = 0;
 437
 438         dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
 439                 __func__, state->demod, state->priv->skip_fw_load);
 440
 441         if (state->priv->skip_fw_load)
 442                 return 0;
 443
 444         /* check if firmware if already running */
 445         if (cx24117_readreg(state, 0xeb) != 0xa) {
 446                 /* Load firmware */
 447                 /* request the firmware, this will block until loaded */
 448                 dev_dbg(&state->priv->i2c->dev,
 449                         "%s: Waiting for firmware upload (%s)...\n",
 450                         __func__, CX24117_DEFAULT_FIRMWARE);
 451                 ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
 452                         state->priv->i2c->dev.parent);
 453                 dev_dbg(&state->priv->i2c->dev,
 454                         "%s: Waiting for firmware upload(2)...\n", __func__);
 455                 if (ret) {
 456                         dev_err(&state->priv->i2c->dev,
 457                                 "%s: No firmware uploaded "
 458                                 "(timeout or file not found?)\n", __func__);
 459                         return ret;
 460                 }
 461
 462                 /* Make sure we don't recurse back through here
 463                  * during loading */
 464                 state->priv->skip_fw_load = 1;
 465
 466                 ret = cx24117_load_firmware(fe, fw);
 467                 if (ret)
 468                         dev_err(&state->priv->i2c->dev,
 469                                 "%s: Writing firmware failed\n", __func__);
 470                 release_firmware(fw);
 471
 472                 dev_info(&state->priv->i2c->dev,
 473                         "%s: Firmware upload %s\n", __func__,
 474                         ret == 0 ? "complete" : "failed");
 475
 476                 /* Ensure firmware is always loaded if required */
 477                 state->priv->skip_fw_load = 0;
 478         }
 479
 480         return ret;
 481 }
 482
 483 /* Take a basic firmware command structure, format it
 484  * and forward it for processing
 485  */
 486 static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
 487         struct cx24117_cmd *cmd)
 488 {
 489         struct cx24117_state *state = fe->demodulator_priv;
 490         int i, ret;
 491
 492         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
 493                 __func__, state->demod);
 494
 495         /* Load the firmware if required */
 496         ret = cx24117_firmware_ondemand(fe);
 497         if (ret != 0)
 498                 return ret;
 499
 500         /* Write the command */
 501         cx24117_writecmd(state, cmd);
 502
 503         /* Start execution and wait for cmd to terminate */
 504         cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
 505         i = 0;
 506         while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
 507                 msleep(20);
 508                 if (i++ > 40) {
 509                         /* Avoid looping forever if the firmware does
 510                                 not respond */
 511                         dev_warn(&state->priv->i2c->dev,
 512                                 "%s() Firmware not responding\n", __func__);
 513                         return -EIO;
 514                 }
 515         }
 516         return 0;
 517 }
 518
 519 static int cx24117_cmd_execute(struct dvb_frontend *fe, struct cx24117_cmd *cmd)
 520 {
 521         struct cx24117_state *state = fe->demodulator_priv;
 522         int ret;
 523
 524         mutex_lock(&state->priv->fe_lock);
 525         ret = cx24117_cmd_execute_nolock(fe, cmd);
 526         mutex_unlock(&state->priv->fe_lock);
 527
 528         return ret;
 529 }
 530
 531 static int cx24117_load_firmware(struct dvb_frontend *fe,
 532         const struct firmware *fw)
 533 {
 534         struct cx24117_state *state = fe->demodulator_priv;
 535         struct cx24117_cmd cmd;
 536         int i, ret;
 537         unsigned char vers[4];
 538
 539         struct i2c_msg msg;
 540         u8 *buf;
 541
 542         dev_dbg(&state->priv->i2c->dev,
 543                 "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
 544                 __func__, state->demod, fw->size, fw->data[0], fw->data[1],
 545                 fw->data[fw->size - 2], fw->data[fw->size - 1]);
 546
 547         cx24117_writereg(state, 0xea, 0x00);
 548         cx24117_writereg(state, 0xea, 0x01);
 549         cx24117_writereg(state, 0xea, 0x00);
 550
 551         cx24117_writereg(state, 0xce, 0x92);
 552
 553         cx24117_writereg(state, 0xfb, 0x00);
 554         cx24117_writereg(state, 0xfc, 0x00);
 555
 556         cx24117_writereg(state, 0xc3, 0x04);
 557         cx24117_writereg(state, 0xc4, 0x04);
 558
 559         cx24117_writereg(state, 0xce, 0x00);
 560         cx24117_writereg(state, 0xcf, 0x00);
 561
 562         cx24117_writereg(state, 0xea, 0x00);
 563         cx24117_writereg(state, 0xeb, 0x0c);
 564         cx24117_writereg(state, 0xec, 0x06);
 565         cx24117_writereg(state, 0xed, 0x05);
 566         cx24117_writereg(state, 0xee, 0x03);
 567         cx24117_writereg(state, 0xef, 0x05);
 568
 569         cx24117_writereg(state, 0xf3, 0x03);
 570         cx24117_writereg(state, 0xf4, 0x44);
 571
 572         cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
 573         cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
 574
 575         cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
 576         cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
 577
 578         cx24117_writereg(state, 0xf2, 0x04);
 579         cx24117_writereg(state, 0xe8, 0x02);
 580         cx24117_writereg(state, 0xea, 0x01);
 581         cx24117_writereg(state, 0xc8, 0x00);
 582         cx24117_writereg(state, 0xc9, 0x00);
 583         cx24117_writereg(state, 0xca, 0x00);
 584         cx24117_writereg(state, 0xcb, 0x00);
 585         cx24117_writereg(state, 0xcc, 0x00);
 586         cx24117_writereg(state, 0xcd, 0x00);
 587         cx24117_writereg(state, 0xe4, 0x03);
 588         cx24117_writereg(state, 0xeb, 0x0a);
 589
 590         cx24117_writereg(state, 0xfb, 0x00);
 591         cx24117_writereg(state, 0xe0, 0x76);
 592         cx24117_writereg(state, 0xf7, 0x81);
 593         cx24117_writereg(state, 0xf8, 0x00);
 594         cx24117_writereg(state, 0xf9, 0x00);
 595
 596         buf = kmalloc(fw->size + 1, GFP_KERNEL);
 597         if (buf == NULL) {
 598                 state->priv->skip_fw_load = 0;
 599                 return -ENOMEM;
 600         }
 601
 602         /* fw upload reg */
 603         buf[0] = 0xfa;
 604         memcpy(&buf[1], fw->data, fw->size);
 605
 606         /* prepare i2c message to send */
 607         msg.addr = state->priv->demod_address;
 608         msg.flags = 0;
 609         msg.len = fw->size + 1;
 610         msg.buf = buf;
 611
 612         /* send fw */
 613         ret = i2c_transfer(state->priv->i2c, &msg, 1);
 614         if (ret < 0)
 615                 return ret;
 616
 617         kfree(buf);
 618
 619         cx24117_writereg(state, 0xf7, 0x0c);
 620         cx24117_writereg(state, 0xe0, 0x00);
 621
 622         /* CMD 1B */
 623         cmd.args[0] = 0x1b;
 624         cmd.args[1] = 0x00;
 625         cmd.args[2] = 0x01;
 626         cmd.args[3] = 0x00;
 627         cmd.len = 4;
 628         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 629         if (ret != 0)
 630                 goto error;
 631
 632         /* CMD 10 */
 633         cmd.args[0] = CMD_SET_VCO;
 634         cmd.args[1] = 0x06;
 635         cmd.args[2] = 0x2b;
 636         cmd.args[3] = 0xd8;
 637         cmd.args[4] = 0xa5;
 638         cmd.args[5] = 0xee;
 639         cmd.args[6] = 0x03;
 640         cmd.args[7] = 0x9d;
 641         cmd.args[8] = 0xfc;
 642         cmd.args[9] = 0x06;
 643         cmd.args[10] = 0x02;
 644         cmd.args[11] = 0x9d;
 645         cmd.args[12] = 0xfc;
 646         cmd.len = 13;
 647         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 648         if (ret != 0)
 649                 goto error;
 650
 651         /* CMD 15 */
 652         cmd.args[0] = 0x15;
 653         cmd.args[1] = 0x00;
 654         cmd.args[2] = 0x01;
 655         cmd.args[3] = 0x00;
 656         cmd.args[4] = 0x00;
 657         cmd.args[5] = 0x01;
 658         cmd.args[6] = 0x01;
 659         cmd.args[7] = 0x01;
 660         cmd.args[8] = 0x00;
 661         cmd.args[9] = 0x05;
 662         cmd.args[10] = 0x02;
 663         cmd.args[11] = 0x02;
 664         cmd.args[12] = 0x00;
 665         cmd.len = 13;
 666         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 667         if (ret != 0)
 668                 goto error;
 669
 670         /* CMD 13 */
 671         cmd.args[0] = CMD_MPEGCONFIG;
 672         cmd.args[1] = 0x00;
 673         cmd.args[2] = 0x00;
 674         cmd.args[3] = 0x00;
 675         cmd.args[4] = 0x01;
 676         cmd.args[5] = 0x00;
 677         cmd.len = 6;
 678         ret = cx24117_cmd_execute_nolock(fe, &cmd);
 679         if (ret != 0)
 680                 goto error;
 681
 682         /* CMD 14 */
 683         for (i = 0; i < 2; i++) {
 684                 cmd.args[0] = CMD_TUNERINIT;
 685                 cmd.args[1] = (u8) i;
 686                 cmd.args[2] = 0x00;
 687                 cmd.args[3] = 0x05;
 688                 cmd.args[4] = 0x00;
 689                 cmd.args[5] = 0x00;
 690                 cmd.args[6] = 0x55;
 691                 cmd.args[7] = 0x00;
 692                 cmd.len = 8;
 693                 ret = cx24117_cmd_execute_nolock(fe, &cmd);
 694                 if (ret != 0)
 695                         goto error;
 696         }
 697
 698         cx24117_writereg(state, 0xce, 0xc0);
 699         cx24117_writereg(state, 0xcf, 0x00);
 700         cx24117_writereg(state, 0xe5, 0x04);
 701
 702         /* Firmware CMD 35: Get firmware version */
 703         cmd.args[0] = CMD_UPDFWVERS;
 704         cmd.len = 2;
 705         for (i = 0; i < 4; i++) {
 706                 cmd.args[1] = i;
 707                 ret = cx24117_cmd_execute_nolock(fe, &cmd);
 708                 if (ret != 0)
 709                         goto error;
 710                 vers[i] = cx24117_readreg(state, 0x33);
 711         }
 712         dev_info(&state->priv->i2c->dev,
 713                 "%s: FW version %i.%i.%i.%i\n", __func__,
 714                 vers[0], vers[1], vers[2], vers[3]);
 715         return 0;
 716 error:
 717         state->priv->skip_fw_load = 0;
 718         dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n", __func__);
 719         return ret;
 720 }
 721
 722 static int cx24117_read_status(struct dvb_frontend *fe, fe_status_t *status)
 723 {
 724         struct cx24117_state *state = fe->demodulator_priv;
 725         int lock;
 726
 727         lock = cx24117_readreg(state,
 728                 (state->demod == 0) ? CX24117_REG_SSTATUS0 :
 729                                       CX24117_REG_SSTATUS1) &
 730                 CX24117_STATUS_MASK;
 731
 732         dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
 733                 __func__, state->demod, lock);
 734
 735         *status = 0;
 736
 737         if (lock & CX24117_HAS_SIGNAL)
 738                 *status |= FE_HAS_SIGNAL;
 739         if (lock & CX24117_HAS_CARRIER)
 740                 *status |= FE_HAS_CARRIER;
 741         if (lock & CX24117_HAS_VITERBI)
 742                 *status |= FE_HAS_VITERBI;
 743         if (lock & CX24117_HAS_SYNCLOCK)
 744                 *status |= FE_HAS_SYNC | FE_HAS_LOCK;
 745
 746         return 0;
 747 }
 748
 749 static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
 750 {
 751         struct cx24117_state *state = fe->demodulator_priv;
 752         int ret;
 753         u8 buf[4];
 754         u8 base_reg = (state->demod == 0) ?
 755                         CX24117_REG_BER4_0 :
 756                         CX24117_REG_BER4_1;
 757
 758         ret = cx24117_readregN(state, base_reg, buf, 4);
 759         if (ret != 0)
 760                 return ret;
 761
 762         *ber = (buf[0] << 24) | (buf[1] << 16) |
 763                 (buf[1] << 8) | buf[0];
 764
 765         dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
 766                 __func__, state->demod, *ber);
 767
 768         return 0;
 769 }
 770
 771 static int cx24117_read_signal_strength(struct dvb_frontend *fe,
 772         u16 *signal_strength)
 773 {
 774         struct cx24117_state *state = fe->demodulator_priv;
 775         struct cx24117_cmd cmd;
 776         int ret;
 777         u16 sig_reading;
 778         u8 buf[2];
 779         u8 reg = (state->demod == 0) ?
 780                 CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
 781
 782         /* Firmware CMD 1A */
 783         cmd.args[0] = 0x1a;
 784         cmd.args[1] = (u8) state->demod;
 785         cmd.len = 2;
 786         ret = cx24117_cmd_execute(fe, &cmd);
 787         if (ret != 0)
 788                 return ret;
 789
 790         ret = cx24117_readregN(state, reg, buf, 2);
 791         if (ret != 0)
 792                 return ret;
 793         sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
 794
 795         *signal_strength = -100 * sig_reading + 94324;
 796
 797         dev_dbg(&state->priv->i2c->dev,
 798                 "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
 799                 __func__, state->demod, sig_reading, *signal_strength);
 800
 801         return 0;
 802 }
 803
 804 static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
 805 {
 806         struct cx24117_state *state = fe->demodulator_priv;
 807         int ret;
 808         u8 buf[2];
 809         u8 reg = (state->demod == 0) ?
 810                 CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
 811
 812         ret = cx24117_readregN(state, reg, buf, 2);
 813         if (ret != 0)
 814                 return ret;
 815
 816         *snr = (buf[0] << 8) | buf[1];
 817
 818         dev_dbg(&state->priv->i2c->dev,
 819                 "%s() demod%d snr = 0x%04x\n",
 820                 __func__, state->demod, *snr);
 821
 822         return ret;
 823 }
 824
 825 static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 826 {
 827         struct cx24117_state *state = fe->demodulator_priv;
 828         fe_delivery_system_t delsys = fe->dtv_property_cache.delivery_system;
 829         int ret;
 830         u8 buf[2];
 831         u8 reg = (state->demod == 0) ?
 832                 CX24117_REG_DVBS_UCB2_0 :
 833                 CX24117_REG_DVBS_UCB2_1;
 834
 835         switch (delsys) {
 836         case SYS_DVBS:
 837                 break;
 838         case SYS_DVBS2:
 839                 reg += (CX24117_REG_DVBS2_UCB2_0 - CX24117_REG_DVBS_UCB2_0);
 840                 break;
 841         default:
 842                 return -EINVAL;
 843         }
 844
 845         ret = cx24117_readregN(state, reg, buf, 2);
 846         if (ret != 0)
 847                 return ret;
 848         *ucblocks = (buf[0] << 8) | buf[1];
 849
 850         dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
 851                 __func__, state->demod, *ucblocks);
 852
 853         return 0;
 854 }
 855
 856 /* Overwrite the current tuning params, we are about to tune */
 857 static void cx24117_clone_params(struct dvb_frontend *fe)
 858 {
 859         struct cx24117_state *state = fe->demodulator_priv;
 860         state->dcur = state->dnxt;
 861 }
 862
 863 /* Wait for LNB */
 864 static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
 865 {
 866         struct cx24117_state *state = fe->demodulator_priv;
 867         int i;
 868         u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
 869                                             CX24117_REG_QSTATUS1;
 870
 871         dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
 872                 __func__, state->demod, cx24117_readreg(state, reg));
 873
 874         /* Wait for up to 300 ms */
 875         for (i = 0; i < 10; i++) {
 876                 val = cx24117_readreg(state, reg) & 0x01;
 877                 if (val != 0)
 878                         return 0;
 879                 msleep(30);
 880         }
 881
 882         dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
 883                 KBUILD_MODNAME, state->demod);
 884
 885         return -ETIMEDOUT; /* -EBUSY ? */
 886 }
 887
 888 static int cx24117_set_voltage(struct dvb_frontend *fe,
 889         fe_sec_voltage_t voltage)
 890 {
 891         struct cx24117_state *state = fe->demodulator_priv;
 892         struct cx24117_cmd cmd;
 893         int ret;
 894         u8 reg = (state->demod == 0) ? 0x10 : 0x20;
 895
 896         dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
 897                 __func__, state->demod,
 898                 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 899                 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
 900                 "SEC_VOLTAGE_OFF");
 901
 902         /* CMD 32 */
 903         cmd.args[0] = 0x32;
 904         cmd.args[1] = reg;
 905         cmd.args[2] = reg;
 906         cmd.len = 3;
 907         ret = cx24117_cmd_execute(fe, &cmd);
 908         if (ret)
 909                 return ret;
 910
 911         if ((voltage == SEC_VOLTAGE_13) ||
 912             (voltage == SEC_VOLTAGE_18)) {
 913                 /* CMD 33 */
 914                 cmd.args[0] = 0x33;
 915                 cmd.args[1] = reg;
 916                 cmd.args[2] = reg;
 917                 cmd.len = 3;
 918                 ret = cx24117_cmd_execute(fe, &cmd);
 919                 if (ret != 0)
 920                         return ret;
 921
 922                 ret = cx24117_wait_for_lnb(fe);
 923                 if (ret != 0)
 924                         return ret;
 925
 926                 /* Wait for voltage/min repeat delay */
 927                 msleep(100);
 928
 929                 /* CMD 22 - CMD_LNBDCLEVEL */
 930                 cmd.args[0] = CMD_LNBDCLEVEL;
 931                 cmd.args[1] = state->demod ? 0 : 1;
 932                 cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
 933                 cmd.len = 3;
 934
 935                 /* Min delay time before DiSEqC send */
 936                 msleep(20);
 937         } else {
 938                 cmd.args[0] = 0x33;
 939                 cmd.args[1] = 0x00;
 940                 cmd.args[2] = reg;
 941                 cmd.len = 3;
 942         }
 943
 944         return cx24117_cmd_execute(fe, &cmd);
 945 }
 946
 947 static int cx24117_set_tone(struct dvb_frontend *fe,
 948         fe_sec_tone_mode_t tone)
 949 {
 950         struct cx24117_state *state = fe->demodulator_priv;
 951         struct cx24117_cmd cmd;
 952         int ret;
 953
 954         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 955                 __func__, state->demod, tone);
 956         if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
 957                 dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid tone=%d\n",
 958                         KBUILD_MODNAME, state->demod, tone);
 959                 return -EINVAL;
 960         }
 961
 962         /* Wait for LNB ready */
 963         ret = cx24117_wait_for_lnb(fe);
 964         if (ret != 0)
 965                 return ret;
 966
 967         /* Min delay time after DiSEqC send */
 968         msleep(20);
 969
 970         /* Set the tone */
 971         /* CMD 23 - CMD_SET_TONE */
 972         cmd.args[0] = CMD_SET_TONE;
 973         cmd.args[1] = (state->demod ? 0 : 1);
 974         cmd.args[2] = 0x00;
 975         cmd.args[3] = 0x00;
 976         cmd.len = 5;
 977         switch (tone) {
 978         case SEC_TONE_ON:
 979                 cmd.args[4] = 0x01;
 980                 break;
 981         case SEC_TONE_OFF:
 982                 cmd.args[4] = 0x00;
 983                 break;
 984         }
 985
 986         msleep(20);
 987
 988         return cx24117_cmd_execute(fe, &cmd);
 989 }
 990
 991 /* Initialise DiSEqC */
 992 static int cx24117_diseqc_init(struct dvb_frontend *fe)
 993 {
 994         struct cx24117_state *state = fe->demodulator_priv;
 995
 996         /* Prepare a DiSEqC command */
 997         state->dsec_cmd.args[0] = CMD_LNBSEND;
 998
 999         /* demod */
1000         state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
1001
1002         /* DiSEqC burst */
1003         state->dsec_cmd.args[CX24117_DISEQC_BURST] = CX24117_DISEQC_MINI_A;
1004
1005         /* Unknown */
1006         state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
1007         state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
1008
1009         /* Continuation flag? */
1010         state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
1011
1012         /* DiSEqC message length */
1013         state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
1014
1015         /* Command length */
1016         state->dsec_cmd.len = 7;
1017
1018         return 0;
1019 }
1020
1021 /* Send DiSEqC message */
1022 static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
1023         struct dvb_diseqc_master_cmd *d)
1024 {
1025         struct cx24117_state *state = fe->demodulator_priv;
1026         int i, ret;
1027
1028         /* Dump DiSEqC message */
1029         dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
1030                 __func__, state->demod);
1031         for (i = 0; i < d->msg_len; i++)
1032                 dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
1033         dev_dbg(&state->priv->i2c->dev, ")\n");
1034
1035         /* Validate length */
1036         if (d->msg_len > 15)
1037                 return -EINVAL;
1038
1039         /* DiSEqC message */
1040         for (i = 0; i < d->msg_len; i++)
1041                 state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] = d->msg[i];
1042
1043         /* DiSEqC message length */
1044         state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
1045
1046         /* Command length */
1047         state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
1048                 state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
1049
1050         /*
1051          * Message is sent with derived else cached burst
1052          *
1053          * WRITE PORT GROUP COMMAND 38
1054          *
1055          * 0/A/A: E0 10 38 F0..F3
1056          * 1/B/B: E0 10 38 F4..F7
1057          * 2/C/A: E0 10 38 F8..FB
1058          * 3/D/B: E0 10 38 FC..FF
1059          *
1060          * databyte[3]= 8421:8421
1061          *              ABCD:WXYZ
1062          *              CLR :SET
1063          *
1064          *              WX= PORT SELECT 0..3    (X=TONEBURST)
1065          *              Y = VOLTAGE             (0=13V, 1=18V)
1066          *              Z = BAND                (0=LOW, 1=HIGH(22K))
1067          */
1068         if (d->msg_len >= 4 && d->msg[2] == 0x38)
1069                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1070                         ((d->msg[3] & 4) >> 2);
1071
1072         dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
1073                 __func__, state->demod,
1074                 state->dsec_cmd.args[CX24117_DISEQC_BURST]);
1075
1076         /* Wait for LNB ready */
1077         ret = cx24117_wait_for_lnb(fe);
1078         if (ret != 0)
1079                 return ret;
1080
1081         /* Wait for voltage/min repeat delay */
1082         msleep(100);
1083
1084         /* Command */
1085         ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
1086         if (ret != 0)
1087                 return ret;
1088         /*
1089          * Wait for send
1090          *
1091          * Eutelsat spec:
1092          * >15ms delay          + (XXX determine if FW does this, see set_tone)
1093          *  13.5ms per byte     +
1094          * >15ms delay          +
1095          *  12.5ms burst        +
1096          * >15ms delay            (XXX determine if FW does this, see set_tone)
1097          */
1098         msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
1099
1100         return 0;
1101 }
1102
1103 /* Send DiSEqC burst */
1104 static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
1105         fe_sec_mini_cmd_t burst)
1106 {
1107         struct cx24117_state *state = fe->demodulator_priv;
1108
1109         dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
1110                 __func__, burst, state->demod);
1111
1112         /* DiSEqC burst */
1113         if (burst == SEC_MINI_A)
1114                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1115                         CX24117_DISEQC_MINI_A;
1116         else if (burst == SEC_MINI_B)
1117                 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1118                         CX24117_DISEQC_MINI_B;
1119         else
1120                 return -EINVAL;
1121
1122         return 0;
1123 }
1124
1125 static int cx24117_get_priv(struct cx24117_priv **priv,
1126         struct i2c_adapter *i2c, u8 client_address)
1127 {
1128         int ret;
1129
1130         mutex_lock(&cx24117_list_mutex);
1131         ret = hybrid_tuner_request_state(struct cx24117_priv, (*priv),
1132                 hybrid_tuner_instance_list, i2c, client_address, "cx24117");
1133         mutex_unlock(&cx24117_list_mutex);
1134
1135         return ret;
1136 }
1137
1138 static void cx24117_release_priv(struct cx24117_priv *priv)
1139 {
1140         mutex_lock(&cx24117_list_mutex);
1141         if (priv != NULL)
1142                 hybrid_tuner_release_state(priv);
1143         mutex_unlock(&cx24117_list_mutex);
1144 }
1145
1146 static void cx24117_release(struct dvb_frontend *fe)
1147 {
1148         struct cx24117_state *state = fe->demodulator_priv;
1149         dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
1150                 __func__, state->demod);
1151         cx24117_release_priv(state->priv);
1152         kfree(state);
1153 }
1154
1155 static struct dvb_frontend_ops cx24117_ops;
1156
1157 struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
1158         struct i2c_adapter *i2c)
1159 {
1160         struct cx24117_state *state = NULL;
1161         struct cx24117_priv *priv = NULL;
1162         int demod = 0;
1163
1164         /* get the common data struct for both demods */
1165         demod = cx24117_get_priv(&priv, i2c, config->demod_address);
1166
1167         switch (demod) {
1168         case 0:
1169                 dev_err(&state->priv->i2c->dev,
1170                         "%s: Error attaching frontend %d\n",
1171                         KBUILD_MODNAME, demod);
1172                 goto error1;
1173                 break;
1174         case 1:
1175                 /* new priv instance */
1176                 priv->i2c = i2c;
1177                 priv->demod_address = config->demod_address;
1178                 mutex_init(&priv->fe_lock);
1179                 break;
1180         default:
1181                 /* existing priv instance */
1182                 break;
1183         }
1184
1185         /* allocate memory for the internal state */
1186         state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1187         if (state == NULL)
1188                 goto error2;
1189
1190         state->demod = demod - 1;
1191         state->priv = priv;
1192
1193         /* test i2c bus for ack */
1194         if (demod == 0) {
1195                 if (cx24117_readreg(state, 0x00) < 0)
1196                         goto error3;
1197         }
1198
1199         dev_info(&state->priv->i2c->dev,
1200                 "%s: Attaching frontend %d\n",
1201                 KBUILD_MODNAME, state->demod);
1202
1203         /* create dvb_frontend */
1204         memcpy(&state->frontend.ops, &cx24117_ops,
1205                 sizeof(struct dvb_frontend_ops));
1206         state->frontend.demodulator_priv = state;
1207         return &state->frontend;
1208
1209 error3:
1210         kfree(state);
1211 error2:
1212         cx24117_release_priv(priv);
1213 error1:
1214         return NULL;
1215 }
1216 EXPORT_SYMBOL_GPL(cx24117_attach);
1217
1218 /*
1219  * Initialise or wake up device
1220  *
1221  * Power config will reset and load initial firmware if required
1222  */
1223 static int cx24117_initfe(struct dvb_frontend *fe)
1224 {
1225         struct cx24117_state *state = fe->demodulator_priv;
1226         struct cx24117_cmd cmd;
1227         int ret;
1228
1229         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1230                 __func__, state->demod);
1231
1232         mutex_lock(&state->priv->fe_lock);
1233
1234         /* Firmware CMD 36: Power config */
1235         cmd.args[0] = CMD_TUNERSLEEP;
1236         cmd.args[1] = (state->demod ? 1 : 0);
1237         cmd.args[2] = 0;
1238         cmd.len = 3;
1239         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1240         if (ret != 0)
1241                 goto exit;
1242
1243         ret = cx24117_diseqc_init(fe);
1244         if (ret != 0)
1245                 goto exit;
1246
1247         /* CMD 3C */
1248         cmd.args[0] = 0x3c;
1249         cmd.args[1] = (state->demod ? 1 : 0);
1250         cmd.args[2] = 0x10;
1251         cmd.args[3] = 0x10;
1252         cmd.len = 4;
1253         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1254         if (ret != 0)
1255                 goto exit;
1256
1257         /* CMD 34 */
1258         cmd.args[0] = 0x34;
1259         cmd.args[1] = (state->demod ? 1 : 0);
1260         cmd.args[2] = CX24117_OCC;
1261         cmd.len = 3;
1262         ret = cx24117_cmd_execute_nolock(fe, &cmd);
1263
1264 exit:
1265         mutex_unlock(&state->priv->fe_lock);
1266
1267         return ret;
1268 }
1269
1270 /*
1271  * Put device to sleep
1272  */
1273 static int cx24117_sleep(struct dvb_frontend *fe)
1274 {
1275         struct cx24117_state *state = fe->demodulator_priv;
1276         struct cx24117_cmd cmd;
1277
1278         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1279                 __func__, state->demod);
1280
1281         /* Firmware CMD 36: Power config */
1282         cmd.args[0] = CMD_TUNERSLEEP;
1283         cmd.args[1] = (state->demod ? 1 : 0);
1284         cmd.args[2] = 1;
1285         cmd.len = 3;
1286         return cx24117_cmd_execute(fe, &cmd);
1287 }
1288
1289 /* dvb-core told us to tune, the tv property cache will be complete,
1290  * it's safe for is to pull values and use them for tuning purposes.
1291  */
1292 static int cx24117_set_frontend(struct dvb_frontend *fe)
1293 {
1294         struct cx24117_state *state = fe->demodulator_priv;
1295         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1296         struct cx24117_cmd cmd;
1297         fe_status_t tunerstat;
1298         int i, status, ret, retune = 1;
1299         u8 reg_clkdiv, reg_ratediv;
1300
1301         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1302                 __func__, state->demod);
1303
1304         switch (c->delivery_system) {
1305         case SYS_DVBS:
1306                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1307                         __func__, state->demod);
1308
1309                 /* Only QPSK is supported for DVB-S */
1310                 if (c->modulation != QPSK) {
1311                         dev_dbg(&state->priv->i2c->dev,
1312                                 "%s() demod%d unsupported modulation (%d)\n",
1313                                 __func__, state->demod, c->modulation);
1314                         return -EINVAL;
1315                 }
1316
1317                 /* Pilot doesn't exist in DVB-S, turn bit off */
1318                 state->dnxt.pilot_val = CX24117_PILOT_OFF;
1319
1320                 /* DVB-S only supports 0.35 */
1321                 state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1322                 break;
1323
1324         case SYS_DVBS2:
1325                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1326                         __func__, state->demod);
1327
1328                 /*
1329                  * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1330                  * but not hardware auto detection
1331                  */
1332                 if (c->modulation != PSK_8 && c->modulation != QPSK) {
1333                         dev_dbg(&state->priv->i2c->dev,
1334                                 "%s() demod%d unsupported modulation (%d)\n",
1335                                 __func__, state->demod, c->modulation);
1336                         return -EOPNOTSUPP;
1337                 }
1338
1339                 switch (c->pilot) {
1340                 case PILOT_AUTO:
1341                         state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1342                         break;
1343                 case PILOT_OFF:
1344                         state->dnxt.pilot_val = CX24117_PILOT_OFF;
1345                         break;
1346                 case PILOT_ON:
1347                         state->dnxt.pilot_val = CX24117_PILOT_ON;
1348                         break;
1349                 default:
1350                         dev_dbg(&state->priv->i2c->dev,
1351                                 "%s() demod%d unsupported pilot mode (%d)\n",
1352                                 __func__, state->demod, c->pilot);
1353                         return -EOPNOTSUPP;
1354                 }
1355
1356                 switch (c->rolloff) {
1357                 case ROLLOFF_20:
1358                         state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1359                         break;
1360                 case ROLLOFF_25:
1361                         state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1362                         break;
1363                 case ROLLOFF_35:
1364                         state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1365                         break;
1366                 case ROLLOFF_AUTO:
1367                         state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1368                         /* soft-auto rolloff */
1369                         retune = 3;
1370                         break;
1371                 default:
1372                         dev_warn(&state->priv->i2c->dev,
1373                                 "%s: demod%d unsupported rolloff (%d)\n",
1374                                 KBUILD_MODNAME, state->demod, c->rolloff);
1375                         return -EOPNOTSUPP;
1376                 }
1377                 break;
1378
1379         default:
1380                 dev_warn(&state->priv->i2c->dev,
1381                         "%s: demod %d unsupported delivery system (%d)\n",
1382                         KBUILD_MODNAME, state->demod, c->delivery_system);
1383                 return -EINVAL;
1384         }
1385
1386         state->dnxt.delsys = c->delivery_system;
1387         state->dnxt.modulation = c->modulation;
1388         state->dnxt.frequency = c->frequency;
1389         state->dnxt.pilot = c->pilot;
1390         state->dnxt.rolloff = c->rolloff;
1391
1392         ret = cx24117_set_inversion(state, c->inversion);
1393         if (ret !=  0)
1394                 return ret;
1395
1396         ret = cx24117_set_fec(state,
1397                 c->delivery_system, c->modulation, c->fec_inner);
1398         if (ret !=  0)
1399                 return ret;
1400
1401         ret = cx24117_set_symbolrate(state, c->symbol_rate);
1402         if (ret !=  0)
1403                 return ret;
1404
1405         /* discard the 'current' tuning parameters and prepare to tune */
1406         cx24117_clone_params(fe);
1407
1408         dev_dbg(&state->priv->i2c->dev,
1409                 "%s: delsys      = %d\n", __func__, state->dcur.delsys);
1410         dev_dbg(&state->priv->i2c->dev,
1411                 "%s: modulation  = %d\n", __func__, state->dcur.modulation);
1412         dev_dbg(&state->priv->i2c->dev,
1413                 "%s: frequency   = %d\n", __func__, state->dcur.frequency);
1414         dev_dbg(&state->priv->i2c->dev,
1415                 "%s: pilot       = %d (val = 0x%02x)\n", __func__,
1416                 state->dcur.pilot, state->dcur.pilot_val);
1417         dev_dbg(&state->priv->i2c->dev,
1418                 "%s: retune      = %d\n", __func__, retune);
1419         dev_dbg(&state->priv->i2c->dev,
1420                 "%s: rolloff     = %d (val = 0x%02x)\n", __func__,
1421                 state->dcur.rolloff, state->dcur.rolloff_val);
1422         dev_dbg(&state->priv->i2c->dev,
1423                 "%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1424         dev_dbg(&state->priv->i2c->dev,
1425                 "%s: FEC         = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1426                 state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1427         dev_dbg(&state->priv->i2c->dev,
1428                 "%s: Inversion   = %d (val = 0x%02x)\n", __func__,
1429                 state->dcur.inversion, state->dcur.inversion_val);
1430
1431         /* Prepare a tune request */
1432         cmd.args[0] = CMD_TUNEREQUEST;
1433
1434         /* demod */
1435         cmd.args[1] = state->demod;
1436
1437         /* Frequency */
1438         cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1439         cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1440         cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1441
1442         /* Symbol Rate */
1443         cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1444         cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1445
1446         /* Automatic Inversion */
1447         cmd.args[7] = state->dcur.inversion_val;
1448
1449         /* Modulation / FEC / Pilot */
1450         cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1451
1452         cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1453         cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1454
1455         cmd.args[11] = state->dcur.rolloff_val;
1456         cmd.args[12] = state->dcur.fec_mask;
1457
1458         if (state->dcur.symbol_rate > 30000000) {
1459                 reg_ratediv = 0x04;
1460                 reg_clkdiv = 0x02;
1461         } else if (state->dcur.symbol_rate > 10000000) {
1462                 reg_ratediv = 0x06;
1463                 reg_clkdiv = 0x03;
1464         } else {
1465                 reg_ratediv = 0x0a;
1466                 reg_clkdiv = 0x05;
1467         }
1468
1469         cmd.args[13] = reg_ratediv;
1470         cmd.args[14] = reg_clkdiv;
1471
1472         cx24117_writereg(state, (state->demod == 0) ?
1473                 CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1474         cx24117_writereg(state, (state->demod == 0) ?
1475                 CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1476
1477         cmd.args[15] = CX24117_PNE;
1478         cmd.len = 16;
1479
1480         do {
1481                 /* Reset status register */
1482                 status = cx24117_readreg(state, (state->demod == 0) ?
1483                         CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1484                         CX24117_SIGNAL_MASK;
1485
1486                 dev_dbg(&state->priv->i2c->dev,
1487                         "%s() demod%d status_setfe = %02x\n",
1488                         __func__, state->demod, status);
1489
1490                 cx24117_writereg(state, (state->demod == 0) ?
1491                         CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1492
1493                 /* Tune */
1494                 ret = cx24117_cmd_execute(fe, &cmd);
1495                 if (ret != 0)
1496                         break;
1497
1498                 /*
1499                  * Wait for up to 500 ms before retrying
1500                  *
1501                  * If we are able to tune then generally it occurs within 100ms.
1502                  * If it takes longer, try a different rolloff setting.
1503                  */
1504                 for (i = 0; i < 50; i++) {
1505                         cx24117_read_status(fe, &tunerstat);
1506                         status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1507                         if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1508                                 dev_dbg(&state->priv->i2c->dev,
1509                                         "%s() demod%d tuned\n",
1510                                         __func__, state->demod);
1511                                 return 0;
1512                         }
1513                         msleep(20);
1514                 }
1515
1516                 dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1517                         __func__, state->demod);
1518
1519                 /* try next rolloff value */
1520                 if (state->dcur.rolloff == 3)
1521                         cmd.args[11]--;
1522
1523         } while (--retune);
1524         return -EINVAL;
1525 }
1526
1527 static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1528         unsigned int mode_flags, unsigned int *delay, fe_status_t *status)
1529 {
1530         struct cx24117_state *state = fe->demodulator_priv;
1531
1532         dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1533                 __func__, state->demod);
1534
1535         *delay = HZ / 5;
1536         if (re_tune) {
1537                 int ret = cx24117_set_frontend(fe);
1538                 if (ret)
1539                         return ret;
1540         }
1541         return cx24117_read_status(fe, status);
1542 }
1543
1544 static int cx24117_get_algo(struct dvb_frontend *fe)
1545 {
1546         return DVBFE_ALGO_HW;
1547 }
1548
1549 static int cx24117_get_frontend(struct dvb_frontend *fe)
1550 {
1551         struct cx24117_state *state = fe->demodulator_priv;
1552         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1553         struct cx24117_cmd cmd;
1554         u8 reg, st, inv;
1555         int ret, idx;
1556         unsigned int freq;
1557         short srate_os, freq_os;
1558
1559         u8 buf[0x1f-4];
1560
1561         cmd.args[0] = 0x1c;
1562         cmd.args[1] = (u8) state->demod;
1563         cmd.len = 2;
1564         ret = cx24117_cmd_execute(fe, &cmd);
1565         if (ret != 0)
1566                 return ret;
1567
1568         /* read all required regs at once */
1569         reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1570         ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1571         if (ret != 0)
1572                 return ret;
1573
1574         st = buf[5];
1575
1576         /* get spectral inversion */
1577         inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1578         if (inv == 0)
1579                 c->inversion = INVERSION_OFF;
1580         else
1581                 c->inversion = INVERSION_ON;
1582
1583         /* modulation and fec */
1584         idx = st & 0x3f;
1585         if (c->delivery_system == SYS_DVBS2) {
1586                 if (idx > 11)
1587                         idx += 9;
1588                 else
1589                         idx += 7;
1590         }
1591
1592         c->modulation = cx24117_modfec_modes[idx].modulation;
1593         c->fec_inner = cx24117_modfec_modes[idx].fec;
1594
1595         /* frequency */
1596         freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1597         freq_os = (buf[8] << 8) | buf[9];
1598         c->frequency = freq + freq_os;
1599
1600         /* symbol rate */
1601         srate_os = (buf[10] << 8) | buf[11];
1602         c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1603         return 0;
1604 }
1605
1606 static struct dvb_frontend_ops cx24117_ops = {
1607         .delsys = { SYS_DVBS, SYS_DVBS2 },
1608         .info = {
1609                 .name = "Conexant CX24117/CX24132",
1610                 .frequency_min = 950000,
1611                 .frequency_max = 2150000,
1612                 .frequency_stepsize = 1011, /* kHz for QPSK frontends */
1613                 .frequency_tolerance = 5000,
1614                 .symbol_rate_min = 1000000,
1615                 .symbol_rate_max = 45000000,
1616                 .caps = FE_CAN_INVERSION_AUTO |
1617                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1618                         FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1619                         FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1620                         FE_CAN_2G_MODULATION |
1621                         FE_CAN_QPSK | FE_CAN_RECOVER
1622         },
1623
1624         .release = cx24117_release,
1625
1626         .init = cx24117_initfe,
1627         .sleep = cx24117_sleep,
1628         .read_status = cx24117_read_status,
1629         .read_ber = cx24117_read_ber,
1630         .read_signal_strength = cx24117_read_signal_strength,
1631         .read_snr = cx24117_read_snr,
1632         .read_ucblocks = cx24117_read_ucblocks,
1633         .set_tone = cx24117_set_tone,
1634         .set_voltage = cx24117_set_voltage,
1635         .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1636         .diseqc_send_burst = cx24117_diseqc_send_burst,
1637         .get_frontend_algo = cx24117_get_algo,
1638         .tune = cx24117_tune,
1639
1640         .set_frontend = cx24117_set_frontend,
1641         .get_frontend = cx24117_get_frontend,
1642 };
1643
1644
1645 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1646 MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1647 MODULE_LICENSE("GPL");
1648 MODULE_VERSION("1.1");
1649 MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1650