linux/drivers/media/dvb-frontends/cx24117.c
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   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 <media/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
 137enum 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
 167static LIST_HEAD(hybrid_tuner_instance_list);
 168static DEFINE_MUTEX(cx24117_list_mutex);
 169
 170/* The Demod/Tuner can't easily provide these, we cache them */
 171struct cx24117_tuning {
 172        u32 frequency;
 173        u32 symbol_rate;
 174        enum fe_spectral_inversion inversion;
 175        enum fe_code_rate fec;
 176
 177        enum fe_delivery_system delsys;
 178        enum fe_modulation modulation;
 179        enum fe_pilot pilot;
 180        enum fe_rolloff rolloff;
 181
 182        /* Demod values */
 183        u8 fec_val;
 184        u8 fec_mask;
 185        u8 inversion_val;
 186        u8 pilot_val;
 187        u8 rolloff_val;
 188};
 189
 190/* Basic commands that are sent to the firmware */
 191struct cx24117_cmd {
 192        u8 len;
 193        u8 args[CX24117_ARGLEN];
 194};
 195
 196/* common to both fe's */
 197struct 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 */
 209struct 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 */
 222static struct cx24117_modfec {
 223        enum fe_delivery_system delivery_system;
 224        enum fe_modulation modulation;
 225        enum fe_code_rate fec;
 226        u8 mask;        /* In DVBS mode this is used to autodetect */
 227        u8 val;         /* Passed to the firmware to indicate mode selection */
 228} cx24117_modfec_modes[] = {
 229        /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
 230
 231        /*mod   fec       mask  val */
 232        { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
 233        { SYS_DVBS, QPSK, FEC_1_2,  0x02, 0x2e }, /* 00000010 00101110 */
 234        { SYS_DVBS, QPSK, FEC_2_3,  0x04, 0x2f }, /* 00000100 00101111 */
 235        { SYS_DVBS, QPSK, FEC_3_4,  0x08, 0x30 }, /* 00001000 00110000 */
 236        { SYS_DVBS, QPSK, FEC_4_5,  0xfe, 0x30 }, /* 000?0000 ?        */
 237        { SYS_DVBS, QPSK, FEC_5_6,  0x20, 0x31 }, /* 00100000 00110001 */
 238        { SYS_DVBS, QPSK, FEC_6_7,  0xfe, 0x30 }, /* 0?000000 ?        */
 239        { SYS_DVBS, QPSK, FEC_7_8,  0x80, 0x32 }, /* 10000000 00110010 */
 240        { SYS_DVBS, QPSK, FEC_8_9,  0xfe, 0x30 }, /* 0000000? ?        */
 241        { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
 242        /* NBC-QPSK */
 243        { SYS_DVBS2, QPSK, FEC_NONE, 0x00, 0x00 },
 244        { SYS_DVBS2, QPSK, FEC_1_2,  0x00, 0x04 },
 245        { SYS_DVBS2, QPSK, FEC_3_5,  0x00, 0x05 },
 246        { SYS_DVBS2, QPSK, FEC_2_3,  0x00, 0x06 },
 247        { SYS_DVBS2, QPSK, FEC_3_4,  0x00, 0x07 },
 248        { SYS_DVBS2, QPSK, FEC_4_5,  0x00, 0x08 },
 249        { SYS_DVBS2, QPSK, FEC_5_6,  0x00, 0x09 },
 250        { SYS_DVBS2, QPSK, FEC_8_9,  0x00, 0x0a },
 251        { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
 252        { SYS_DVBS2, QPSK, FEC_AUTO, 0x00, 0x00 },
 253        /* 8PSK */
 254        { SYS_DVBS2, PSK_8, FEC_NONE, 0x00, 0x00 },
 255        { SYS_DVBS2, PSK_8, FEC_3_5,  0x00, 0x0c },
 256        { SYS_DVBS2, PSK_8, FEC_2_3,  0x00, 0x0d },
 257        { SYS_DVBS2, PSK_8, FEC_3_4,  0x00, 0x0e },
 258        { SYS_DVBS2, PSK_8, FEC_5_6,  0x00, 0x0f },
 259        { SYS_DVBS2, PSK_8, FEC_8_9,  0x00, 0x10 },
 260        { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
 261        { SYS_DVBS2, PSK_8, FEC_AUTO, 0x00, 0x00 },
 262        /*
 263         * 'val' can be found in the FECSTATUS register when tuning.
 264         * FECSTATUS will give the actual FEC in use if tuning was successful.
 265         */
 266};
 267
 268
 269static 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
 290static 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
 318static 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
 343static 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
 364static int cx24117_set_inversion(struct cx24117_state *state,
 365        enum fe_spectral_inversion inversion)
 366{
 367        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 368                __func__, inversion, state->demod);
 369
 370        switch (inversion) {
 371        case INVERSION_OFF:
 372                state->dnxt.inversion_val = 0x00;
 373                break;
 374        case INVERSION_ON:
 375                state->dnxt.inversion_val = 0x04;
 376                break;
 377        case INVERSION_AUTO:
 378                state->dnxt.inversion_val = 0x0C;
 379                break;
 380        default:
 381                return -EINVAL;
 382        }
 383
 384        state->dnxt.inversion = inversion;
 385
 386        return 0;
 387}
 388
 389static int cx24117_lookup_fecmod(struct cx24117_state *state,
 390        enum fe_delivery_system d, enum fe_modulation m, enum fe_code_rate f)
 391{
 392        int i, ret = -EINVAL;
 393
 394        dev_dbg(&state->priv->i2c->dev,
 395                "%s(demod(0x%02x,0x%02x) demod%d\n",
 396                __func__, m, f, state->demod);
 397
 398        for (i = 0; i < ARRAY_SIZE(cx24117_modfec_modes); i++) {
 399                if ((d == cx24117_modfec_modes[i].delivery_system) &&
 400                        (m == cx24117_modfec_modes[i].modulation) &&
 401                        (f == cx24117_modfec_modes[i].fec)) {
 402                                ret = i;
 403                                break;
 404                        }
 405        }
 406
 407        return ret;
 408}
 409
 410static int cx24117_set_fec(struct cx24117_state *state,
 411                           enum fe_delivery_system delsys,
 412                           enum fe_modulation mod,
 413                           enum fe_code_rate fec)
 414{
 415        int ret;
 416
 417        dev_dbg(&state->priv->i2c->dev,
 418                "%s(0x%02x,0x%02x) demod%d\n",
 419                __func__, mod, fec, state->demod);
 420
 421        ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
 422        if (ret < 0)
 423                return ret;
 424
 425        state->dnxt.fec = fec;
 426        state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
 427        state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
 428        dev_dbg(&state->priv->i2c->dev,
 429                "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
 430                state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
 431
 432        return 0;
 433}
 434
 435static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
 436{
 437        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 438                __func__, rate, state->demod);
 439
 440        state->dnxt.symbol_rate = rate;
 441
 442        dev_dbg(&state->priv->i2c->dev,
 443                "%s() demod%d symbol_rate = %d\n",
 444                __func__, state->demod, rate);
 445
 446        return 0;
 447}
 448
 449static int cx24117_load_firmware(struct dvb_frontend *fe,
 450        const struct firmware *fw);
 451
 452static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
 453{
 454        struct cx24117_state *state = fe->demodulator_priv;
 455        const struct firmware *fw;
 456        int ret = 0;
 457
 458        dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
 459                __func__, state->demod, state->priv->skip_fw_load);
 460
 461        if (state->priv->skip_fw_load)
 462                return 0;
 463
 464        /* check if firmware is already running */
 465        if (cx24117_readreg(state, 0xeb) != 0xa) {
 466                /* Load firmware */
 467                /* request the firmware, this will block until loaded */
 468                dev_dbg(&state->priv->i2c->dev,
 469                        "%s: Waiting for firmware upload (%s)...\n",
 470                        __func__, CX24117_DEFAULT_FIRMWARE);
 471                ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
 472                        state->priv->i2c->dev.parent);
 473                dev_dbg(&state->priv->i2c->dev,
 474                        "%s: Waiting for firmware upload(2)...\n", __func__);
 475                if (ret) {
 476                        dev_err(&state->priv->i2c->dev,
 477                                "%s: No firmware uploaded (timeout or file not found?)\n",
 478__func__);
 479                        return ret;
 480                }
 481
 482                /* Make sure we don't recurse back through here
 483                 * during loading */
 484                state->priv->skip_fw_load = 1;
 485
 486                ret = cx24117_load_firmware(fe, fw);
 487                if (ret)
 488                        dev_err(&state->priv->i2c->dev,
 489                                "%s: Writing firmware failed\n", __func__);
 490                release_firmware(fw);
 491
 492                dev_info(&state->priv->i2c->dev,
 493                        "%s: Firmware upload %s\n", __func__,
 494                        ret == 0 ? "complete" : "failed");
 495
 496                /* Ensure firmware is always loaded if required */
 497                state->priv->skip_fw_load = 0;
 498        }
 499
 500        return ret;
 501}
 502
 503/* Take a basic firmware command structure, format it
 504 * and forward it for processing
 505 */
 506static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
 507        struct cx24117_cmd *cmd)
 508{
 509        struct cx24117_state *state = fe->demodulator_priv;
 510        int i, ret;
 511
 512        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
 513                __func__, state->demod);
 514
 515        /* Load the firmware if required */
 516        ret = cx24117_firmware_ondemand(fe);
 517        if (ret != 0)
 518                return ret;
 519
 520        /* Write the command */
 521        cx24117_writecmd(state, cmd);
 522
 523        /* Start execution and wait for cmd to terminate */
 524        cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
 525        i = 0;
 526        while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
 527                msleep(20);
 528                if (i++ > 40) {
 529                        /* Avoid looping forever if the firmware does
 530                                not respond */
 531                        dev_warn(&state->priv->i2c->dev,
 532                                "%s() Firmware not responding\n", __func__);
 533                        return -EIO;
 534                }
 535        }
 536        return 0;
 537}
 538
 539static int cx24117_cmd_execute(struct dvb_frontend *fe, struct cx24117_cmd *cmd)
 540{
 541        struct cx24117_state *state = fe->demodulator_priv;
 542        int ret;
 543
 544        mutex_lock(&state->priv->fe_lock);
 545        ret = cx24117_cmd_execute_nolock(fe, cmd);
 546        mutex_unlock(&state->priv->fe_lock);
 547
 548        return ret;
 549}
 550
 551static int cx24117_load_firmware(struct dvb_frontend *fe,
 552        const struct firmware *fw)
 553{
 554        struct cx24117_state *state = fe->demodulator_priv;
 555        struct cx24117_cmd cmd;
 556        int i, ret;
 557        unsigned char vers[4];
 558
 559        struct i2c_msg msg;
 560        u8 *buf;
 561
 562        dev_dbg(&state->priv->i2c->dev,
 563                "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
 564                __func__, state->demod, fw->size, fw->data[0], fw->data[1],
 565                fw->data[fw->size - 2], fw->data[fw->size - 1]);
 566
 567        cx24117_writereg(state, 0xea, 0x00);
 568        cx24117_writereg(state, 0xea, 0x01);
 569        cx24117_writereg(state, 0xea, 0x00);
 570
 571        cx24117_writereg(state, 0xce, 0x92);
 572
 573        cx24117_writereg(state, 0xfb, 0x00);
 574        cx24117_writereg(state, 0xfc, 0x00);
 575
 576        cx24117_writereg(state, 0xc3, 0x04);
 577        cx24117_writereg(state, 0xc4, 0x04);
 578
 579        cx24117_writereg(state, 0xce, 0x00);
 580        cx24117_writereg(state, 0xcf, 0x00);
 581
 582        cx24117_writereg(state, 0xea, 0x00);
 583        cx24117_writereg(state, 0xeb, 0x0c);
 584        cx24117_writereg(state, 0xec, 0x06);
 585        cx24117_writereg(state, 0xed, 0x05);
 586        cx24117_writereg(state, 0xee, 0x03);
 587        cx24117_writereg(state, 0xef, 0x05);
 588
 589        cx24117_writereg(state, 0xf3, 0x03);
 590        cx24117_writereg(state, 0xf4, 0x44);
 591
 592        cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
 593        cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
 594
 595        cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
 596        cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
 597
 598        cx24117_writereg(state, 0xf2, 0x04);
 599        cx24117_writereg(state, 0xe8, 0x02);
 600        cx24117_writereg(state, 0xea, 0x01);
 601        cx24117_writereg(state, 0xc8, 0x00);
 602        cx24117_writereg(state, 0xc9, 0x00);
 603        cx24117_writereg(state, 0xca, 0x00);
 604        cx24117_writereg(state, 0xcb, 0x00);
 605        cx24117_writereg(state, 0xcc, 0x00);
 606        cx24117_writereg(state, 0xcd, 0x00);
 607        cx24117_writereg(state, 0xe4, 0x03);
 608        cx24117_writereg(state, 0xeb, 0x0a);
 609
 610        cx24117_writereg(state, 0xfb, 0x00);
 611        cx24117_writereg(state, 0xe0, 0x76);
 612        cx24117_writereg(state, 0xf7, 0x81);
 613        cx24117_writereg(state, 0xf8, 0x00);
 614        cx24117_writereg(state, 0xf9, 0x00);
 615
 616        buf = kmalloc(fw->size + 1, GFP_KERNEL);
 617        if (buf == NULL) {
 618                state->priv->skip_fw_load = 0;
 619                return -ENOMEM;
 620        }
 621
 622        /* fw upload reg */
 623        buf[0] = 0xfa;
 624        memcpy(&buf[1], fw->data, fw->size);
 625
 626        /* prepare i2c message to send */
 627        msg.addr = state->priv->demod_address;
 628        msg.flags = 0;
 629        msg.len = fw->size + 1;
 630        msg.buf = buf;
 631
 632        /* send fw */
 633        ret = i2c_transfer(state->priv->i2c, &msg, 1);
 634        if (ret < 0)
 635                return ret;
 636
 637        kfree(buf);
 638
 639        cx24117_writereg(state, 0xf7, 0x0c);
 640        cx24117_writereg(state, 0xe0, 0x00);
 641
 642        /* Init demodulator */
 643        cmd.args[0] = CMD_DEMODINIT;
 644        cmd.args[1] = 0x00;
 645        cmd.args[2] = 0x01;
 646        cmd.args[3] = 0x00;
 647        cmd.len = 4;
 648        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 649        if (ret != 0)
 650                goto error;
 651
 652        /* Set VCO frequency */
 653        cmd.args[0] = CMD_SET_VCOFREQ;
 654        cmd.args[1] = 0x06;
 655        cmd.args[2] = 0x2b;
 656        cmd.args[3] = 0xd8;
 657        cmd.args[4] = 0xa5;
 658        cmd.args[5] = 0xee;
 659        cmd.args[6] = 0x03;
 660        cmd.args[7] = 0x9d;
 661        cmd.args[8] = 0xfc;
 662        cmd.args[9] = 0x06;
 663        cmd.args[10] = 0x02;
 664        cmd.args[11] = 0x9d;
 665        cmd.args[12] = 0xfc;
 666        cmd.len = 13;
 667        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 668        if (ret != 0)
 669                goto error;
 670
 671        /* Tuner init */
 672        cmd.args[0] = CMD_TUNERINIT;
 673        cmd.args[1] = 0x00;
 674        cmd.args[2] = 0x01;
 675        cmd.args[3] = 0x00;
 676        cmd.args[4] = 0x00;
 677        cmd.args[5] = 0x01;
 678        cmd.args[6] = 0x01;
 679        cmd.args[7] = 0x01;
 680        cmd.args[8] = 0x00;
 681        cmd.args[9] = 0x05;
 682        cmd.args[10] = 0x02;
 683        cmd.args[11] = 0x02;
 684        cmd.args[12] = 0x00;
 685        cmd.len = 13;
 686        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 687        if (ret != 0)
 688                goto error;
 689
 690        /* Global MPEG config */
 691        cmd.args[0] = CMD_GLOBAL_MPEGCFG;
 692        cmd.args[1] = 0x00;
 693        cmd.args[2] = 0x00;
 694        cmd.args[3] = 0x00;
 695        cmd.args[4] = 0x01;
 696        cmd.args[5] = 0x00;
 697        cmd.len = 6;
 698        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 699        if (ret != 0)
 700                goto error;
 701
 702        /* MPEG config for each demod */
 703        for (i = 0; i < 2; i++) {
 704                cmd.args[0] = CMD_MPEGCFG;
 705                cmd.args[1] = (u8) i;
 706                cmd.args[2] = 0x00;
 707                cmd.args[3] = 0x05;
 708                cmd.args[4] = 0x00;
 709                cmd.args[5] = 0x00;
 710                cmd.args[6] = 0x55;
 711                cmd.args[7] = 0x00;
 712                cmd.len = 8;
 713                ret = cx24117_cmd_execute_nolock(fe, &cmd);
 714                if (ret != 0)
 715                        goto error;
 716        }
 717
 718        cx24117_writereg(state, 0xce, 0xc0);
 719        cx24117_writereg(state, 0xcf, 0x00);
 720        cx24117_writereg(state, 0xe5, 0x04);
 721
 722        /* Get firmware version */
 723        cmd.args[0] = CMD_FWVERSION;
 724        cmd.len = 2;
 725        for (i = 0; i < 4; i++) {
 726                cmd.args[1] = i;
 727                ret = cx24117_cmd_execute_nolock(fe, &cmd);
 728                if (ret != 0)
 729                        goto error;
 730                vers[i] = cx24117_readreg(state, 0x33);
 731        }
 732        dev_info(&state->priv->i2c->dev,
 733                "%s: FW version %i.%i.%i.%i\n", __func__,
 734                vers[0], vers[1], vers[2], vers[3]);
 735        return 0;
 736error:
 737        state->priv->skip_fw_load = 0;
 738        dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n", __func__);
 739        return ret;
 740}
 741
 742static int cx24117_read_status(struct dvb_frontend *fe, enum fe_status *status)
 743{
 744        struct cx24117_state *state = fe->demodulator_priv;
 745        int lock;
 746
 747        lock = cx24117_readreg(state,
 748                (state->demod == 0) ? CX24117_REG_SSTATUS0 :
 749                                      CX24117_REG_SSTATUS1) &
 750                CX24117_STATUS_MASK;
 751
 752        dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
 753                __func__, state->demod, lock);
 754
 755        *status = 0;
 756
 757        if (lock & CX24117_HAS_SIGNAL)
 758                *status |= FE_HAS_SIGNAL;
 759        if (lock & CX24117_HAS_CARRIER)
 760                *status |= FE_HAS_CARRIER;
 761        if (lock & CX24117_HAS_VITERBI)
 762                *status |= FE_HAS_VITERBI;
 763        if (lock & CX24117_HAS_SYNCLOCK)
 764                *status |= FE_HAS_SYNC | FE_HAS_LOCK;
 765
 766        return 0;
 767}
 768
 769static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
 770{
 771        struct cx24117_state *state = fe->demodulator_priv;
 772        int ret;
 773        u8 buf[4];
 774        u8 base_reg = (state->demod == 0) ?
 775                        CX24117_REG_BER4_0 :
 776                        CX24117_REG_BER4_1;
 777
 778        ret = cx24117_readregN(state, base_reg, buf, 4);
 779        if (ret != 0)
 780                return ret;
 781
 782        *ber = (buf[0] << 24) | (buf[1] << 16) |
 783                (buf[1] << 8) | buf[0];
 784
 785        dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
 786                __func__, state->demod, *ber);
 787
 788        return 0;
 789}
 790
 791static int cx24117_read_signal_strength(struct dvb_frontend *fe,
 792        u16 *signal_strength)
 793{
 794        struct cx24117_state *state = fe->demodulator_priv;
 795        struct cx24117_cmd cmd;
 796        int ret;
 797        u16 sig_reading;
 798        u8 buf[2];
 799        u8 reg = (state->demod == 0) ?
 800                CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
 801
 802        /* Read AGC accumulator register */
 803        cmd.args[0] = CMD_GET_AGCACC;
 804        cmd.args[1] = (u8) state->demod;
 805        cmd.len = 2;
 806        ret = cx24117_cmd_execute(fe, &cmd);
 807        if (ret != 0)
 808                return ret;
 809
 810        ret = cx24117_readregN(state, reg, buf, 2);
 811        if (ret != 0)
 812                return ret;
 813        sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
 814
 815        *signal_strength = -100 * sig_reading + 94324;
 816
 817        dev_dbg(&state->priv->i2c->dev,
 818                "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
 819                __func__, state->demod, sig_reading, *signal_strength);
 820
 821        return 0;
 822}
 823
 824static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
 825{
 826        struct cx24117_state *state = fe->demodulator_priv;
 827        int ret;
 828        u8 buf[2];
 829        u8 reg = (state->demod == 0) ?
 830                CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
 831
 832        ret = cx24117_readregN(state, reg, buf, 2);
 833        if (ret != 0)
 834                return ret;
 835
 836        *snr = (buf[0] << 8) | buf[1];
 837
 838        dev_dbg(&state->priv->i2c->dev,
 839                "%s() demod%d snr = 0x%04x\n",
 840                __func__, state->demod, *snr);
 841
 842        return ret;
 843}
 844
 845static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 846{
 847        struct cx24117_state *state = fe->demodulator_priv;
 848        enum fe_delivery_system delsys = fe->dtv_property_cache.delivery_system;
 849        int ret;
 850        u8 buf[2];
 851        u8 reg = (state->demod == 0) ?
 852                CX24117_REG_DVBS_UCB2_0 :
 853                CX24117_REG_DVBS_UCB2_1;
 854
 855        switch (delsys) {
 856        case SYS_DVBS:
 857                break;
 858        case SYS_DVBS2:
 859                reg += (CX24117_REG_DVBS2_UCB2_0 - CX24117_REG_DVBS_UCB2_0);
 860                break;
 861        default:
 862                return -EINVAL;
 863        }
 864
 865        ret = cx24117_readregN(state, reg, buf, 2);
 866        if (ret != 0)
 867                return ret;
 868        *ucblocks = (buf[0] << 8) | buf[1];
 869
 870        dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
 871                __func__, state->demod, *ucblocks);
 872
 873        return 0;
 874}
 875
 876/* Overwrite the current tuning params, we are about to tune */
 877static void cx24117_clone_params(struct dvb_frontend *fe)
 878{
 879        struct cx24117_state *state = fe->demodulator_priv;
 880        state->dcur = state->dnxt;
 881}
 882
 883/* Wait for LNB */
 884static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
 885{
 886        struct cx24117_state *state = fe->demodulator_priv;
 887        int i;
 888        u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
 889                                            CX24117_REG_QSTATUS1;
 890
 891        dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
 892                __func__, state->demod, cx24117_readreg(state, reg));
 893
 894        /* Wait for up to 300 ms */
 895        for (i = 0; i < 10; i++) {
 896                val = cx24117_readreg(state, reg) & 0x01;
 897                if (val != 0)
 898                        return 0;
 899                msleep(30);
 900        }
 901
 902        dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
 903                KBUILD_MODNAME, state->demod);
 904
 905        return -ETIMEDOUT; /* -EBUSY ? */
 906}
 907
 908static int cx24117_set_voltage(struct dvb_frontend *fe,
 909                               enum fe_sec_voltage voltage)
 910{
 911        struct cx24117_state *state = fe->demodulator_priv;
 912        struct cx24117_cmd cmd;
 913        int ret;
 914        u8 reg = (state->demod == 0) ? 0x10 : 0x20;
 915
 916        dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
 917                __func__, state->demod,
 918                voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 919                voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
 920                "SEC_VOLTAGE_OFF");
 921
 922        /* Prepare a set GPIO logic level CMD */
 923        cmd.args[0] = CMD_SET_GPIOOUT;
 924        cmd.args[2] = reg; /* mask */
 925        cmd.len = 3;
 926
 927        if ((voltage == SEC_VOLTAGE_13) ||
 928            (voltage == SEC_VOLTAGE_18)) {
 929                /* power on LNB */
 930                cmd.args[1] = reg;
 931                ret = cx24117_cmd_execute(fe, &cmd);
 932                if (ret != 0)
 933                        return ret;
 934
 935                ret = cx24117_wait_for_lnb(fe);
 936                if (ret != 0)
 937                        return ret;
 938
 939                /* Wait for voltage/min repeat delay */
 940                msleep(100);
 941
 942                /* Set 13V/18V select pin */
 943                cmd.args[0] = CMD_LNBDCLEVEL;
 944                cmd.args[1] = state->demod ? 0 : 1;
 945                cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
 946                cmd.len = 3;
 947                ret = cx24117_cmd_execute(fe, &cmd);
 948
 949                /* Min delay time before DiSEqC send */
 950                msleep(20);
 951        } else {
 952                /* power off LNB */
 953                cmd.args[1] = 0x00;
 954                ret = cx24117_cmd_execute(fe, &cmd);
 955        }
 956
 957        return ret;
 958}
 959
 960static int cx24117_set_tone(struct dvb_frontend *fe,
 961                            enum fe_sec_tone_mode tone)
 962{
 963        struct cx24117_state *state = fe->demodulator_priv;
 964        struct cx24117_cmd cmd;
 965        int ret;
 966
 967        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 968                __func__, state->demod, tone);
 969        if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
 970                dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid tone=%d\n",
 971                        KBUILD_MODNAME, state->demod, tone);
 972                return -EINVAL;
 973        }
 974
 975        /* Wait for LNB ready */
 976        ret = cx24117_wait_for_lnb(fe);
 977        if (ret != 0)
 978                return ret;
 979
 980        /* Min delay time after DiSEqC send */
 981        msleep(20);
 982
 983        /* Set the tone */
 984        cmd.args[0] = CMD_LNBPCBCONFIG;
 985        cmd.args[1] = (state->demod ? 0 : 1);
 986        cmd.args[2] = 0x00;
 987        cmd.args[3] = 0x00;
 988        cmd.len = 5;
 989        switch (tone) {
 990        case SEC_TONE_ON:
 991                cmd.args[4] = 0x01;
 992                break;
 993        case SEC_TONE_OFF:
 994                cmd.args[4] = 0x00;
 995                break;
 996        }
 997
 998        msleep(20);
 999
1000        return cx24117_cmd_execute(fe, &cmd);
1001}
1002
1003/* Initialise DiSEqC */
1004static int cx24117_diseqc_init(struct dvb_frontend *fe)
1005{
1006        struct cx24117_state *state = fe->demodulator_priv;
1007
1008        /* Prepare a DiSEqC command */
1009        state->dsec_cmd.args[0] = CMD_LNBSEND;
1010
1011        /* demod */
1012        state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
1013
1014        /* DiSEqC burst */
1015        state->dsec_cmd.args[CX24117_DISEQC_BURST] = CX24117_DISEQC_MINI_A;
1016
1017        /* Unknown */
1018        state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
1019        state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
1020
1021        /* Continuation flag? */
1022        state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
1023
1024        /* DiSEqC message length */
1025        state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
1026
1027        /* Command length */
1028        state->dsec_cmd.len = 7;
1029
1030        return 0;
1031}
1032
1033/* Send DiSEqC message */
1034static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
1035        struct dvb_diseqc_master_cmd *d)
1036{
1037        struct cx24117_state *state = fe->demodulator_priv;
1038        int i, ret;
1039
1040        /* Dump DiSEqC message */
1041        dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
1042                __func__, state->demod);
1043        for (i = 0; i < d->msg_len; i++)
1044                dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
1045        dev_dbg(&state->priv->i2c->dev, ")\n");
1046
1047        /* Validate length */
1048        if (d->msg_len > sizeof(d->msg))
1049                return -EINVAL;
1050
1051        /* DiSEqC message */
1052        for (i = 0; i < d->msg_len; i++)
1053                state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] = d->msg[i];
1054
1055        /* DiSEqC message length */
1056        state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
1057
1058        /* Command length */
1059        state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
1060                state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
1061
1062        /*
1063         * Message is sent with derived else cached burst
1064         *
1065         * WRITE PORT GROUP COMMAND 38
1066         *
1067         * 0/A/A: E0 10 38 F0..F3
1068         * 1/B/B: E0 10 38 F4..F7
1069         * 2/C/A: E0 10 38 F8..FB
1070         * 3/D/B: E0 10 38 FC..FF
1071         *
1072         * databyte[3]= 8421:8421
1073         *              ABCD:WXYZ
1074         *              CLR :SET
1075         *
1076         *              WX= PORT SELECT 0..3    (X=TONEBURST)
1077         *              Y = VOLTAGE             (0=13V, 1=18V)
1078         *              Z = BAND                (0=LOW, 1=HIGH(22K))
1079         */
1080        if (d->msg_len >= 4 && d->msg[2] == 0x38)
1081                state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1082                        ((d->msg[3] & 4) >> 2);
1083
1084        dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
1085                __func__, state->demod,
1086                state->dsec_cmd.args[CX24117_DISEQC_BURST]);
1087
1088        /* Wait for LNB ready */
1089        ret = cx24117_wait_for_lnb(fe);
1090        if (ret != 0)
1091                return ret;
1092
1093        /* Wait for voltage/min repeat delay */
1094        msleep(100);
1095
1096        /* Command */
1097        ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
1098        if (ret != 0)
1099                return ret;
1100        /*
1101         * Wait for send
1102         *
1103         * Eutelsat spec:
1104         * >15ms delay          + (XXX determine if FW does this, see set_tone)
1105         *  13.5ms per byte     +
1106         * >15ms delay          +
1107         *  12.5ms burst        +
1108         * >15ms delay            (XXX determine if FW does this, see set_tone)
1109         */
1110        msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
1111
1112        return 0;
1113}
1114
1115/* Send DiSEqC burst */
1116static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
1117        enum fe_sec_mini_cmd burst)
1118{
1119        struct cx24117_state *state = fe->demodulator_priv;
1120
1121        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
1122                __func__, burst, state->demod);
1123
1124        /* DiSEqC burst */
1125        if (burst == SEC_MINI_A)
1126                state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1127                        CX24117_DISEQC_MINI_A;
1128        else if (burst == SEC_MINI_B)
1129                state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1130                        CX24117_DISEQC_MINI_B;
1131        else
1132                return -EINVAL;
1133
1134        return 0;
1135}
1136
1137static int cx24117_get_priv(struct cx24117_priv **priv,
1138        struct i2c_adapter *i2c, u8 client_address)
1139{
1140        int ret;
1141
1142        mutex_lock(&cx24117_list_mutex);
1143        ret = hybrid_tuner_request_state(struct cx24117_priv, (*priv),
1144                hybrid_tuner_instance_list, i2c, client_address, "cx24117");
1145        mutex_unlock(&cx24117_list_mutex);
1146
1147        return ret;
1148}
1149
1150static void cx24117_release_priv(struct cx24117_priv *priv)
1151{
1152        mutex_lock(&cx24117_list_mutex);
1153        if (priv != NULL)
1154                hybrid_tuner_release_state(priv);
1155        mutex_unlock(&cx24117_list_mutex);
1156}
1157
1158static void cx24117_release(struct dvb_frontend *fe)
1159{
1160        struct cx24117_state *state = fe->demodulator_priv;
1161        dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
1162                __func__, state->demod);
1163        cx24117_release_priv(state->priv);
1164        kfree(state);
1165}
1166
1167static const struct dvb_frontend_ops cx24117_ops;
1168
1169struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
1170        struct i2c_adapter *i2c)
1171{
1172        struct cx24117_state *state = NULL;
1173        struct cx24117_priv *priv = NULL;
1174        int demod = 0;
1175
1176        /* get the common data struct for both demods */
1177        demod = cx24117_get_priv(&priv, i2c, config->demod_address);
1178
1179        switch (demod) {
1180        case 0:
1181                dev_err(&i2c->dev,
1182                        "%s: Error attaching frontend %d\n",
1183                        KBUILD_MODNAME, demod);
1184                goto error1;
1185                break;
1186        case 1:
1187                /* new priv instance */
1188                priv->i2c = i2c;
1189                priv->demod_address = config->demod_address;
1190                mutex_init(&priv->fe_lock);
1191                break;
1192        default:
1193                /* existing priv instance */
1194                break;
1195        }
1196
1197        /* allocate memory for the internal state */
1198        state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1199        if (state == NULL)
1200                goto error2;
1201
1202        state->demod = demod - 1;
1203        state->priv = priv;
1204
1205        dev_info(&state->priv->i2c->dev,
1206                "%s: Attaching frontend %d\n",
1207                KBUILD_MODNAME, state->demod);
1208
1209        /* create dvb_frontend */
1210        memcpy(&state->frontend.ops, &cx24117_ops,
1211                sizeof(struct dvb_frontend_ops));
1212        state->frontend.demodulator_priv = state;
1213        return &state->frontend;
1214
1215error2:
1216        cx24117_release_priv(priv);
1217error1:
1218        return NULL;
1219}
1220EXPORT_SYMBOL_GPL(cx24117_attach);
1221
1222/*
1223 * Initialise or wake up device
1224 *
1225 * Power config will reset and load initial firmware if required
1226 */
1227static int cx24117_initfe(struct dvb_frontend *fe)
1228{
1229        struct cx24117_state *state = fe->demodulator_priv;
1230        struct cx24117_cmd cmd;
1231        int ret;
1232
1233        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1234                __func__, state->demod);
1235
1236        mutex_lock(&state->priv->fe_lock);
1237
1238        /* Set sleep mode off */
1239        cmd.args[0] = CMD_SET_SLEEPMODE;
1240        cmd.args[1] = (state->demod ? 1 : 0);
1241        cmd.args[2] = 0;
1242        cmd.len = 3;
1243        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1244        if (ret != 0)
1245                goto exit;
1246
1247        ret = cx24117_diseqc_init(fe);
1248        if (ret != 0)
1249                goto exit;
1250
1251        /* Set BER control */
1252        cmd.args[0] = CMD_BERCTRL;
1253        cmd.args[1] = (state->demod ? 1 : 0);
1254        cmd.args[2] = 0x10;
1255        cmd.args[3] = 0x10;
1256        cmd.len = 4;
1257        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1258        if (ret != 0)
1259                goto exit;
1260
1261        /* Set RS correction (enable/disable) */
1262        cmd.args[0] = CMD_ENABLERSCORR;
1263        cmd.args[1] = (state->demod ? 1 : 0);
1264        cmd.args[2] = CX24117_OCC;
1265        cmd.len = 3;
1266        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1267        if (ret != 0)
1268                goto exit;
1269
1270        /* Set GPIO direction */
1271        /* Set as output - controls LNB power on/off */
1272        cmd.args[0] = CMD_SET_GPIODIR;
1273        cmd.args[1] = 0x30;
1274        cmd.args[2] = 0x30;
1275        cmd.len = 3;
1276        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1277
1278exit:
1279        mutex_unlock(&state->priv->fe_lock);
1280
1281        return ret;
1282}
1283
1284/*
1285 * Put device to sleep
1286 */
1287static int cx24117_sleep(struct dvb_frontend *fe)
1288{
1289        struct cx24117_state *state = fe->demodulator_priv;
1290        struct cx24117_cmd cmd;
1291
1292        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1293                __func__, state->demod);
1294
1295        /* Set sleep mode on */
1296        cmd.args[0] = CMD_SET_SLEEPMODE;
1297        cmd.args[1] = (state->demod ? 1 : 0);
1298        cmd.args[2] = 1;
1299        cmd.len = 3;
1300        return cx24117_cmd_execute(fe, &cmd);
1301}
1302
1303/* dvb-core told us to tune, the tv property cache will be complete,
1304 * it's safe for is to pull values and use them for tuning purposes.
1305 */
1306static int cx24117_set_frontend(struct dvb_frontend *fe)
1307{
1308        struct cx24117_state *state = fe->demodulator_priv;
1309        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1310        struct cx24117_cmd cmd;
1311        enum fe_status tunerstat;
1312        int i, status, ret, retune = 1;
1313        u8 reg_clkdiv, reg_ratediv;
1314
1315        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1316                __func__, state->demod);
1317
1318        switch (c->delivery_system) {
1319        case SYS_DVBS:
1320                dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1321                        __func__, state->demod);
1322
1323                /* Only QPSK is supported for DVB-S */
1324                if (c->modulation != QPSK) {
1325                        dev_dbg(&state->priv->i2c->dev,
1326                                "%s() demod%d unsupported modulation (%d)\n",
1327                                __func__, state->demod, c->modulation);
1328                        return -EINVAL;
1329                }
1330
1331                /* Pilot doesn't exist in DVB-S, turn bit off */
1332                state->dnxt.pilot_val = CX24117_PILOT_OFF;
1333
1334                /* DVB-S only supports 0.35 */
1335                state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1336                break;
1337
1338        case SYS_DVBS2:
1339                dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1340                        __func__, state->demod);
1341
1342                /*
1343                 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1344                 * but not hardware auto detection
1345                 */
1346                if (c->modulation != PSK_8 && c->modulation != QPSK) {
1347                        dev_dbg(&state->priv->i2c->dev,
1348                                "%s() demod%d unsupported modulation (%d)\n",
1349                                __func__, state->demod, c->modulation);
1350                        return -EOPNOTSUPP;
1351                }
1352
1353                switch (c->pilot) {
1354                case PILOT_AUTO:
1355                        state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1356                        break;
1357                case PILOT_OFF:
1358                        state->dnxt.pilot_val = CX24117_PILOT_OFF;
1359                        break;
1360                case PILOT_ON:
1361                        state->dnxt.pilot_val = CX24117_PILOT_ON;
1362                        break;
1363                default:
1364                        dev_dbg(&state->priv->i2c->dev,
1365                                "%s() demod%d unsupported pilot mode (%d)\n",
1366                                __func__, state->demod, c->pilot);
1367                        return -EOPNOTSUPP;
1368                }
1369
1370                switch (c->rolloff) {
1371                case ROLLOFF_20:
1372                        state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1373                        break;
1374                case ROLLOFF_25:
1375                        state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1376                        break;
1377                case ROLLOFF_35:
1378                        state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1379                        break;
1380                case ROLLOFF_AUTO:
1381                        state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1382                        /* soft-auto rolloff */
1383                        retune = 3;
1384                        break;
1385                default:
1386                        dev_warn(&state->priv->i2c->dev,
1387                                "%s: demod%d unsupported rolloff (%d)\n",
1388                                KBUILD_MODNAME, state->demod, c->rolloff);
1389                        return -EOPNOTSUPP;
1390                }
1391                break;
1392
1393        default:
1394                dev_warn(&state->priv->i2c->dev,
1395                        "%s: demod %d unsupported delivery system (%d)\n",
1396                        KBUILD_MODNAME, state->demod, c->delivery_system);
1397                return -EINVAL;
1398        }
1399
1400        state->dnxt.delsys = c->delivery_system;
1401        state->dnxt.modulation = c->modulation;
1402        state->dnxt.frequency = c->frequency;
1403        state->dnxt.pilot = c->pilot;
1404        state->dnxt.rolloff = c->rolloff;
1405
1406        ret = cx24117_set_inversion(state, c->inversion);
1407        if (ret !=  0)
1408                return ret;
1409
1410        ret = cx24117_set_fec(state,
1411                c->delivery_system, c->modulation, c->fec_inner);
1412        if (ret !=  0)
1413                return ret;
1414
1415        ret = cx24117_set_symbolrate(state, c->symbol_rate);
1416        if (ret !=  0)
1417                return ret;
1418
1419        /* discard the 'current' tuning parameters and prepare to tune */
1420        cx24117_clone_params(fe);
1421
1422        dev_dbg(&state->priv->i2c->dev,
1423                "%s: delsys      = %d\n", __func__, state->dcur.delsys);
1424        dev_dbg(&state->priv->i2c->dev,
1425                "%s: modulation  = %d\n", __func__, state->dcur.modulation);
1426        dev_dbg(&state->priv->i2c->dev,
1427                "%s: frequency   = %d\n", __func__, state->dcur.frequency);
1428        dev_dbg(&state->priv->i2c->dev,
1429                "%s: pilot       = %d (val = 0x%02x)\n", __func__,
1430                state->dcur.pilot, state->dcur.pilot_val);
1431        dev_dbg(&state->priv->i2c->dev,
1432                "%s: retune      = %d\n", __func__, retune);
1433        dev_dbg(&state->priv->i2c->dev,
1434                "%s: rolloff     = %d (val = 0x%02x)\n", __func__,
1435                state->dcur.rolloff, state->dcur.rolloff_val);
1436        dev_dbg(&state->priv->i2c->dev,
1437                "%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1438        dev_dbg(&state->priv->i2c->dev,
1439                "%s: FEC         = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1440                state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1441        dev_dbg(&state->priv->i2c->dev,
1442                "%s: Inversion   = %d (val = 0x%02x)\n", __func__,
1443                state->dcur.inversion, state->dcur.inversion_val);
1444
1445        /* Prepare a tune request */
1446        cmd.args[0] = CMD_TUNEREQUEST;
1447
1448        /* demod */
1449        cmd.args[1] = state->demod;
1450
1451        /* Frequency */
1452        cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1453        cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1454        cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1455
1456        /* Symbol Rate */
1457        cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1458        cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1459
1460        /* Automatic Inversion */
1461        cmd.args[7] = state->dcur.inversion_val;
1462
1463        /* Modulation / FEC / Pilot */
1464        cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1465
1466        cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1467        cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1468
1469        cmd.args[11] = state->dcur.rolloff_val;
1470        cmd.args[12] = state->dcur.fec_mask;
1471
1472        if (state->dcur.symbol_rate > 30000000) {
1473                reg_ratediv = 0x04;
1474                reg_clkdiv = 0x02;
1475        } else if (state->dcur.symbol_rate > 10000000) {
1476                reg_ratediv = 0x06;
1477                reg_clkdiv = 0x03;
1478        } else {
1479                reg_ratediv = 0x0a;
1480                reg_clkdiv = 0x05;
1481        }
1482
1483        cmd.args[13] = reg_ratediv;
1484        cmd.args[14] = reg_clkdiv;
1485
1486        cx24117_writereg(state, (state->demod == 0) ?
1487                CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1488        cx24117_writereg(state, (state->demod == 0) ?
1489                CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1490
1491        cmd.args[15] = CX24117_PNE;
1492        cmd.len = 16;
1493
1494        do {
1495                /* Reset status register */
1496                status = cx24117_readreg(state, (state->demod == 0) ?
1497                        CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1498                        CX24117_SIGNAL_MASK;
1499
1500                dev_dbg(&state->priv->i2c->dev,
1501                        "%s() demod%d status_setfe = %02x\n",
1502                        __func__, state->demod, status);
1503
1504                cx24117_writereg(state, (state->demod == 0) ?
1505                        CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1506
1507                /* Tune */
1508                ret = cx24117_cmd_execute(fe, &cmd);
1509                if (ret != 0)
1510                        break;
1511
1512                /*
1513                 * Wait for up to 500 ms before retrying
1514                 *
1515                 * If we are able to tune then generally it occurs within 100ms.
1516                 * If it takes longer, try a different rolloff setting.
1517                 */
1518                for (i = 0; i < 50; i++) {
1519                        cx24117_read_status(fe, &tunerstat);
1520                        status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1521                        if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1522                                dev_dbg(&state->priv->i2c->dev,
1523                                        "%s() demod%d tuned\n",
1524                                        __func__, state->demod);
1525                                return 0;
1526                        }
1527                        msleep(20);
1528                }
1529
1530                dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1531                        __func__, state->demod);
1532
1533                /* try next rolloff value */
1534                if (state->dcur.rolloff == 3)
1535                        cmd.args[11]--;
1536
1537        } while (--retune);
1538        return -EINVAL;
1539}
1540
1541static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1542        unsigned int mode_flags, unsigned int *delay, enum fe_status *status)
1543{
1544        struct cx24117_state *state = fe->demodulator_priv;
1545
1546        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1547                __func__, state->demod);
1548
1549        *delay = HZ / 5;
1550        if (re_tune) {
1551                int ret = cx24117_set_frontend(fe);
1552                if (ret)
1553                        return ret;
1554        }
1555        return cx24117_read_status(fe, status);
1556}
1557
1558static enum dvbfe_algo cx24117_get_algo(struct dvb_frontend *fe)
1559{
1560        return DVBFE_ALGO_HW;
1561}
1562
1563static int cx24117_get_frontend(struct dvb_frontend *fe,
1564                                struct dtv_frontend_properties *c)
1565{
1566        struct cx24117_state *state = fe->demodulator_priv;
1567        struct cx24117_cmd cmd;
1568        u8 reg, st, inv;
1569        int ret, idx;
1570        unsigned int freq;
1571        short srate_os, freq_os;
1572
1573        u8 buf[0x1f-4];
1574
1575        /* Read current tune parameters */
1576        cmd.args[0] = CMD_GETCTLACC;
1577        cmd.args[1] = (u8) state->demod;
1578        cmd.len = 2;
1579        ret = cx24117_cmd_execute(fe, &cmd);
1580        if (ret != 0)
1581                return ret;
1582
1583        /* read all required regs at once */
1584        reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1585        ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1586        if (ret != 0)
1587                return ret;
1588
1589        st = buf[5];
1590
1591        /* get spectral inversion */
1592        inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1593        if (inv == 0)
1594                c->inversion = INVERSION_OFF;
1595        else
1596                c->inversion = INVERSION_ON;
1597
1598        /* modulation and fec */
1599        idx = st & 0x3f;
1600        if (c->delivery_system == SYS_DVBS2) {
1601                if (idx > 11)
1602                        idx += 9;
1603                else
1604                        idx += 7;
1605        }
1606
1607        c->modulation = cx24117_modfec_modes[idx].modulation;
1608        c->fec_inner = cx24117_modfec_modes[idx].fec;
1609
1610        /* frequency */
1611        freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1612        freq_os = (buf[8] << 8) | buf[9];
1613        c->frequency = freq + freq_os;
1614
1615        /* symbol rate */
1616        srate_os = (buf[10] << 8) | buf[11];
1617        c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1618        return 0;
1619}
1620
1621static const struct dvb_frontend_ops cx24117_ops = {
1622        .delsys = { SYS_DVBS, SYS_DVBS2 },
1623        .info = {
1624                .name = "Conexant CX24117/CX24132",
1625                .frequency_min = 950000,
1626                .frequency_max = 2150000,
1627                .frequency_stepsize = 1011, /* kHz for QPSK frontends */
1628                .frequency_tolerance = 5000,
1629                .symbol_rate_min = 1000000,
1630                .symbol_rate_max = 45000000,
1631                .caps = FE_CAN_INVERSION_AUTO |
1632                        FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1633                        FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1634                        FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1635                        FE_CAN_2G_MODULATION |
1636                        FE_CAN_QPSK | FE_CAN_RECOVER
1637        },
1638
1639        .release = cx24117_release,
1640
1641        .init = cx24117_initfe,
1642        .sleep = cx24117_sleep,
1643        .read_status = cx24117_read_status,
1644        .read_ber = cx24117_read_ber,
1645        .read_signal_strength = cx24117_read_signal_strength,
1646        .read_snr = cx24117_read_snr,
1647        .read_ucblocks = cx24117_read_ucblocks,
1648        .set_tone = cx24117_set_tone,
1649        .set_voltage = cx24117_set_voltage,
1650        .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1651        .diseqc_send_burst = cx24117_diseqc_send_burst,
1652        .get_frontend_algo = cx24117_get_algo,
1653        .tune = cx24117_tune,
1654
1655        .set_frontend = cx24117_set_frontend,
1656        .get_frontend = cx24117_get_frontend,
1657};
1658
1659
1660MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1661MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1662MODULE_LICENSE("GPL");
1663MODULE_VERSION("1.1");
1664MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1665
1666