linux/drivers/media/dvb-frontends/cx24117.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3    Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
   4
   5    Copyright (C) 2013 Luis Alves <ljalvs@gmail.com>
   6        July, 6th 2013
   7            First release based on cx24116 driver by:
   8            Steven Toth and Georg Acher, Darron Broad, Igor Liplianin
   9            Cards currently supported:
  10                TBS6980 - Dual DVBS/S2 PCIe card
  11                TBS6981 - Dual DVBS/S2 PCIe card
  12
  13*/
  14
  15#include <linux/slab.h>
  16#include <linux/kernel.h>
  17#include <linux/module.h>
  18#include <linux/moduleparam.h>
  19#include <linux/init.h>
  20#include <linux/firmware.h>
  21
  22#include "tuner-i2c.h"
  23#include <media/dvb_frontend.h>
  24#include "cx24117.h"
  25
  26
  27#define CX24117_DEFAULT_FIRMWARE "dvb-fe-cx24117.fw"
  28#define CX24117_SEARCH_RANGE_KHZ 5000
  29
  30/* known registers */
  31#define CX24117_REG_COMMAND      (0x00)      /* command buffer */
  32#define CX24117_REG_EXECUTE      (0x1f)      /* execute command */
  33
  34#define CX24117_REG_FREQ3_0      (0x34)      /* frequency */
  35#define CX24117_REG_FREQ2_0      (0x35)
  36#define CX24117_REG_FREQ1_0      (0x36)
  37#define CX24117_REG_STATE0       (0x39)
  38#define CX24117_REG_SSTATUS0     (0x3a)      /* demod0 signal high / status */
  39#define CX24117_REG_SIGNAL0      (0x3b)
  40#define CX24117_REG_FREQ5_0      (0x3c)      /* +-freq */
  41#define CX24117_REG_FREQ6_0      (0x3d)
  42#define CX24117_REG_SRATE2_0     (0x3e)      /* +- 1000 * srate */
  43#define CX24117_REG_SRATE1_0     (0x3f)
  44#define CX24117_REG_QUALITY2_0   (0x40)
  45#define CX24117_REG_QUALITY1_0   (0x41)
  46
  47#define CX24117_REG_BER4_0       (0x47)
  48#define CX24117_REG_BER3_0       (0x48)
  49#define CX24117_REG_BER2_0       (0x49)
  50#define CX24117_REG_BER1_0       (0x4a)
  51#define CX24117_REG_DVBS_UCB2_0  (0x4b)
  52#define CX24117_REG_DVBS_UCB1_0  (0x4c)
  53#define CX24117_REG_DVBS2_UCB2_0 (0x50)
  54#define CX24117_REG_DVBS2_UCB1_0 (0x51)
  55#define CX24117_REG_QSTATUS0     (0x93)
  56#define CX24117_REG_CLKDIV0      (0xe6)
  57#define CX24117_REG_RATEDIV0     (0xf0)
  58
  59
  60#define CX24117_REG_FREQ3_1      (0x55)      /* frequency */
  61#define CX24117_REG_FREQ2_1      (0x56)
  62#define CX24117_REG_FREQ1_1      (0x57)
  63#define CX24117_REG_STATE1       (0x5a)
  64#define CX24117_REG_SSTATUS1     (0x5b)      /* demod1 signal high / status */
  65#define CX24117_REG_SIGNAL1      (0x5c)
  66#define CX24117_REG_FREQ5_1      (0x5d)      /* +- freq */
  67#define CX24117_REG_FREQ4_1      (0x5e)
  68#define CX24117_REG_SRATE2_1     (0x5f)
  69#define CX24117_REG_SRATE1_1     (0x60)
  70#define CX24117_REG_QUALITY2_1   (0x61)
  71#define CX24117_REG_QUALITY1_1   (0x62)
  72#define CX24117_REG_BER4_1       (0x68)
  73#define CX24117_REG_BER3_1       (0x69)
  74#define CX24117_REG_BER2_1       (0x6a)
  75#define CX24117_REG_BER1_1       (0x6b)
  76#define CX24117_REG_DVBS_UCB2_1  (0x6c)
  77#define CX24117_REG_DVBS_UCB1_1  (0x6d)
  78#define CX24117_REG_DVBS2_UCB2_1 (0x71)
  79#define CX24117_REG_DVBS2_UCB1_1 (0x72)
  80#define CX24117_REG_QSTATUS1     (0x9f)
  81#define CX24117_REG_CLKDIV1      (0xe7)
  82#define CX24117_REG_RATEDIV1     (0xf1)
  83
  84
  85/* arg buffer size */
  86#define CX24117_ARGLEN       (0x1e)
  87
  88/* rolloff */
  89#define CX24117_ROLLOFF_020  (0x00)
  90#define CX24117_ROLLOFF_025  (0x01)
  91#define CX24117_ROLLOFF_035  (0x02)
  92
  93/* pilot bit */
  94#define CX24117_PILOT_OFF    (0x00)
  95#define CX24117_PILOT_ON     (0x40)
  96#define CX24117_PILOT_AUTO   (0x80)
  97
  98/* signal status */
  99#define CX24117_HAS_SIGNAL   (0x01)
 100#define CX24117_HAS_CARRIER  (0x02)
 101#define CX24117_HAS_VITERBI  (0x04)
 102#define CX24117_HAS_SYNCLOCK (0x08)
 103#define CX24117_STATUS_MASK  (0x0f)
 104#define CX24117_SIGNAL_MASK  (0xc0)
 105
 106
 107/* arg offset for DiSEqC */
 108#define CX24117_DISEQC_DEMOD  (1)
 109#define CX24117_DISEQC_BURST  (2)
 110#define CX24117_DISEQC_ARG3_2 (3)   /* unknown value=2 */
 111#define CX24117_DISEQC_ARG4_0 (4)   /* unknown value=0 */
 112#define CX24117_DISEQC_ARG5_0 (5)   /* unknown value=0 */
 113#define CX24117_DISEQC_MSGLEN (6)
 114#define CX24117_DISEQC_MSGOFS (7)
 115
 116/* DiSEqC burst */
 117#define CX24117_DISEQC_MINI_A (0)
 118#define CX24117_DISEQC_MINI_B (1)
 119
 120
 121#define CX24117_PNE     (0) /* 0 disabled / 2 enabled */
 122#define CX24117_OCC     (1) /* 0 disabled / 1 enabled */
 123
 124
 125enum cmds {
 126        CMD_SET_VCOFREQ    = 0x10,
 127        CMD_TUNEREQUEST    = 0x11,
 128        CMD_GLOBAL_MPEGCFG = 0x13,
 129        CMD_MPEGCFG        = 0x14,
 130        CMD_TUNERINIT      = 0x15,
 131        CMD_GET_SRATE      = 0x18,
 132        CMD_SET_GOLDCODE   = 0x19,
 133        CMD_GET_AGCACC     = 0x1a,
 134        CMD_DEMODINIT      = 0x1b,
 135        CMD_GETCTLACC      = 0x1c,
 136
 137        CMD_LNBCONFIG      = 0x20,
 138        CMD_LNBSEND        = 0x21,
 139        CMD_LNBDCLEVEL     = 0x22,
 140        CMD_LNBPCBCONFIG   = 0x23,
 141        CMD_LNBSENDTONEBST = 0x24,
 142        CMD_LNBUPDREPLY    = 0x25,
 143
 144        CMD_SET_GPIOMODE   = 0x30,
 145        CMD_SET_GPIOEN     = 0x31,
 146        CMD_SET_GPIODIR    = 0x32,
 147        CMD_SET_GPIOOUT    = 0x33,
 148        CMD_ENABLERSCORR   = 0x34,
 149        CMD_FWVERSION      = 0x35,
 150        CMD_SET_SLEEPMODE  = 0x36,
 151        CMD_BERCTRL        = 0x3c,
 152        CMD_EVENTCTRL      = 0x3d,
 153};
 154
 155static LIST_HEAD(hybrid_tuner_instance_list);
 156static DEFINE_MUTEX(cx24117_list_mutex);
 157
 158/* The Demod/Tuner can't easily provide these, we cache them */
 159struct cx24117_tuning {
 160        u32 frequency;
 161        u32 symbol_rate;
 162        enum fe_spectral_inversion inversion;
 163        enum fe_code_rate fec;
 164
 165        enum fe_delivery_system delsys;
 166        enum fe_modulation modulation;
 167        enum fe_pilot pilot;
 168        enum fe_rolloff rolloff;
 169
 170        /* Demod values */
 171        u8 fec_val;
 172        u8 fec_mask;
 173        u8 inversion_val;
 174        u8 pilot_val;
 175        u8 rolloff_val;
 176};
 177
 178/* Basic commands that are sent to the firmware */
 179struct cx24117_cmd {
 180        u8 len;
 181        u8 args[CX24117_ARGLEN];
 182};
 183
 184/* common to both fe's */
 185struct cx24117_priv {
 186        u8 demod_address;
 187        struct i2c_adapter *i2c;
 188        u8 skip_fw_load;
 189        struct mutex fe_lock;
 190
 191        /* Used for sharing this struct between demods */
 192        struct tuner_i2c_props i2c_props;
 193        struct list_head hybrid_tuner_instance_list;
 194};
 195
 196/* one per each fe */
 197struct cx24117_state {
 198        struct cx24117_priv *priv;
 199        struct dvb_frontend frontend;
 200
 201        struct cx24117_tuning dcur;
 202        struct cx24117_tuning dnxt;
 203        struct cx24117_cmd dsec_cmd;
 204
 205        int demod;
 206};
 207
 208/* modfec (modulation and FEC) lookup table */
 209/* Check cx24116.c for a detailed description of each field */
 210static struct cx24117_modfec {
 211        enum fe_delivery_system delivery_system;
 212        enum fe_modulation modulation;
 213        enum fe_code_rate fec;
 214        u8 mask;        /* In DVBS mode this is used to autodetect */
 215        u8 val;         /* Passed to the firmware to indicate mode selection */
 216} cx24117_modfec_modes[] = {
 217        /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
 218
 219        /*mod   fec       mask  val */
 220        { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
 221        { SYS_DVBS, QPSK, FEC_1_2,  0x02, 0x2e }, /* 00000010 00101110 */
 222        { SYS_DVBS, QPSK, FEC_2_3,  0x04, 0x2f }, /* 00000100 00101111 */
 223        { SYS_DVBS, QPSK, FEC_3_4,  0x08, 0x30 }, /* 00001000 00110000 */
 224        { SYS_DVBS, QPSK, FEC_4_5,  0xfe, 0x30 }, /* 000?0000 ?        */
 225        { SYS_DVBS, QPSK, FEC_5_6,  0x20, 0x31 }, /* 00100000 00110001 */
 226        { SYS_DVBS, QPSK, FEC_6_7,  0xfe, 0x30 }, /* 0?000000 ?        */
 227        { SYS_DVBS, QPSK, FEC_7_8,  0x80, 0x32 }, /* 10000000 00110010 */
 228        { SYS_DVBS, QPSK, FEC_8_9,  0xfe, 0x30 }, /* 0000000? ?        */
 229        { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
 230        /* NBC-QPSK */
 231        { SYS_DVBS2, QPSK, FEC_NONE, 0x00, 0x00 },
 232        { SYS_DVBS2, QPSK, FEC_1_2,  0x00, 0x04 },
 233        { SYS_DVBS2, QPSK, FEC_3_5,  0x00, 0x05 },
 234        { SYS_DVBS2, QPSK, FEC_2_3,  0x00, 0x06 },
 235        { SYS_DVBS2, QPSK, FEC_3_4,  0x00, 0x07 },
 236        { SYS_DVBS2, QPSK, FEC_4_5,  0x00, 0x08 },
 237        { SYS_DVBS2, QPSK, FEC_5_6,  0x00, 0x09 },
 238        { SYS_DVBS2, QPSK, FEC_8_9,  0x00, 0x0a },
 239        { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
 240        { SYS_DVBS2, QPSK, FEC_AUTO, 0x00, 0x00 },
 241        /* 8PSK */
 242        { SYS_DVBS2, PSK_8, FEC_NONE, 0x00, 0x00 },
 243        { SYS_DVBS2, PSK_8, FEC_3_5,  0x00, 0x0c },
 244        { SYS_DVBS2, PSK_8, FEC_2_3,  0x00, 0x0d },
 245        { SYS_DVBS2, PSK_8, FEC_3_4,  0x00, 0x0e },
 246        { SYS_DVBS2, PSK_8, FEC_5_6,  0x00, 0x0f },
 247        { SYS_DVBS2, PSK_8, FEC_8_9,  0x00, 0x10 },
 248        { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
 249        { SYS_DVBS2, PSK_8, FEC_AUTO, 0x00, 0x00 },
 250        /*
 251         * 'val' can be found in the FECSTATUS register when tuning.
 252         * FECSTATUS will give the actual FEC in use if tuning was successful.
 253         */
 254};
 255
 256
 257static int cx24117_writereg(struct cx24117_state *state, u8 reg, u8 data)
 258{
 259        u8 buf[] = { reg, data };
 260        struct i2c_msg msg = { .addr = state->priv->demod_address,
 261                .flags = 0, .buf = buf, .len = 2 };
 262        int ret;
 263
 264        dev_dbg(&state->priv->i2c->dev,
 265                        "%s() demod%d i2c wr @0x%02x=0x%02x\n",
 266                        __func__, state->demod, reg, data);
 267
 268        ret = i2c_transfer(state->priv->i2c, &msg, 1);
 269        if (ret < 0) {
 270                dev_warn(&state->priv->i2c->dev,
 271                        "%s: demod%d i2c wr err(%i) @0x%02x=0x%02x\n",
 272                        KBUILD_MODNAME, state->demod, ret, reg, data);
 273                return ret;
 274        }
 275        return 0;
 276}
 277
 278static int cx24117_writecmd(struct cx24117_state *state,
 279        struct cx24117_cmd *cmd)
 280{
 281        struct i2c_msg msg;
 282        u8 buf[CX24117_ARGLEN+1];
 283        int ret;
 284
 285        dev_dbg(&state->priv->i2c->dev,
 286                        "%s() demod%d i2c wr cmd len=%d\n",
 287                        __func__, state->demod, cmd->len);
 288
 289        buf[0] = CX24117_REG_COMMAND;
 290        memcpy(&buf[1], cmd->args, cmd->len);
 291
 292        msg.addr = state->priv->demod_address;
 293        msg.flags = 0;
 294        msg.len = cmd->len+1;
 295        msg.buf = buf;
 296        ret = i2c_transfer(state->priv->i2c, &msg, 1);
 297        if (ret < 0) {
 298                dev_warn(&state->priv->i2c->dev,
 299                        "%s: demod%d i2c wr cmd err(%i) len=%d\n",
 300                        KBUILD_MODNAME, state->demod, ret, cmd->len);
 301                return ret;
 302        }
 303        return 0;
 304}
 305
 306static int cx24117_readreg(struct cx24117_state *state, u8 reg)
 307{
 308        int ret;
 309        u8 recv = 0;
 310        struct i2c_msg msg[] = {
 311                { .addr = state->priv->demod_address, .flags = 0,
 312                        .buf = &reg, .len = 1 },
 313                { .addr = state->priv->demod_address, .flags = I2C_M_RD,
 314                        .buf = &recv, .len = 1 }
 315        };
 316
 317        ret = i2c_transfer(state->priv->i2c, msg, 2);
 318        if (ret < 0) {
 319                dev_warn(&state->priv->i2c->dev,
 320                        "%s: demod%d i2c rd err(%d) @0x%x\n",
 321                        KBUILD_MODNAME, state->demod, ret, reg);
 322                return ret;
 323        }
 324
 325        dev_dbg(&state->priv->i2c->dev, "%s() demod%d i2c rd @0x%02x=0x%02x\n",
 326                __func__, state->demod, reg, recv);
 327
 328        return recv;
 329}
 330
 331static int cx24117_readregN(struct cx24117_state *state,
 332        u8 reg, u8 *buf, int len)
 333{
 334        int ret;
 335        struct i2c_msg msg[] = {
 336                { .addr = state->priv->demod_address, .flags = 0,
 337                        .buf = &reg, .len = 1 },
 338                { .addr = state->priv->demod_address, .flags = I2C_M_RD,
 339                        .buf = buf, .len = len }
 340        };
 341
 342        ret = i2c_transfer(state->priv->i2c, msg, 2);
 343        if (ret < 0) {
 344                dev_warn(&state->priv->i2c->dev,
 345                        "%s: demod%d i2c rd err(%d) @0x%x\n",
 346                        KBUILD_MODNAME, state->demod, ret, reg);
 347                return ret;
 348        }
 349        return 0;
 350}
 351
 352static int cx24117_set_inversion(struct cx24117_state *state,
 353        enum fe_spectral_inversion inversion)
 354{
 355        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 356                __func__, inversion, state->demod);
 357
 358        switch (inversion) {
 359        case INVERSION_OFF:
 360                state->dnxt.inversion_val = 0x00;
 361                break;
 362        case INVERSION_ON:
 363                state->dnxt.inversion_val = 0x04;
 364                break;
 365        case INVERSION_AUTO:
 366                state->dnxt.inversion_val = 0x0C;
 367                break;
 368        default:
 369                return -EINVAL;
 370        }
 371
 372        state->dnxt.inversion = inversion;
 373
 374        return 0;
 375}
 376
 377static int cx24117_lookup_fecmod(struct cx24117_state *state,
 378        enum fe_delivery_system d, enum fe_modulation m, enum fe_code_rate f)
 379{
 380        int i, ret = -EINVAL;
 381
 382        dev_dbg(&state->priv->i2c->dev,
 383                "%s(demod(0x%02x,0x%02x) demod%d\n",
 384                __func__, m, f, state->demod);
 385
 386        for (i = 0; i < ARRAY_SIZE(cx24117_modfec_modes); i++) {
 387                if ((d == cx24117_modfec_modes[i].delivery_system) &&
 388                        (m == cx24117_modfec_modes[i].modulation) &&
 389                        (f == cx24117_modfec_modes[i].fec)) {
 390                                ret = i;
 391                                break;
 392                        }
 393        }
 394
 395        return ret;
 396}
 397
 398static int cx24117_set_fec(struct cx24117_state *state,
 399                           enum fe_delivery_system delsys,
 400                           enum fe_modulation mod,
 401                           enum fe_code_rate fec)
 402{
 403        int ret;
 404
 405        dev_dbg(&state->priv->i2c->dev,
 406                "%s(0x%02x,0x%02x) demod%d\n",
 407                __func__, mod, fec, state->demod);
 408
 409        ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
 410        if (ret < 0)
 411                return ret;
 412
 413        state->dnxt.fec = fec;
 414        state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
 415        state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
 416        dev_dbg(&state->priv->i2c->dev,
 417                "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
 418                state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
 419
 420        return 0;
 421}
 422
 423static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
 424{
 425        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 426                __func__, rate, state->demod);
 427
 428        state->dnxt.symbol_rate = rate;
 429
 430        dev_dbg(&state->priv->i2c->dev,
 431                "%s() demod%d symbol_rate = %d\n",
 432                __func__, state->demod, rate);
 433
 434        return 0;
 435}
 436
 437static int cx24117_load_firmware(struct dvb_frontend *fe,
 438        const struct firmware *fw);
 439
 440static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
 441{
 442        struct cx24117_state *state = fe->demodulator_priv;
 443        const struct firmware *fw;
 444        int ret = 0;
 445
 446        dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
 447                __func__, state->demod, state->priv->skip_fw_load);
 448
 449        if (state->priv->skip_fw_load)
 450                return 0;
 451
 452        /* check if firmware is already running */
 453        if (cx24117_readreg(state, 0xeb) != 0xa) {
 454                /* Load firmware */
 455                /* request the firmware, this will block until loaded */
 456                dev_dbg(&state->priv->i2c->dev,
 457                        "%s: Waiting for firmware upload (%s)...\n",
 458                        __func__, CX24117_DEFAULT_FIRMWARE);
 459                ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
 460                        state->priv->i2c->dev.parent);
 461                dev_dbg(&state->priv->i2c->dev,
 462                        "%s: Waiting for firmware upload(2)...\n", __func__);
 463                if (ret) {
 464                        dev_err(&state->priv->i2c->dev,
 465                                "%s: No firmware uploaded (timeout or file not found?)\n",
 466__func__);
 467                        return ret;
 468                }
 469
 470                /* Make sure we don't recurse back through here
 471                 * during loading */
 472                state->priv->skip_fw_load = 1;
 473
 474                ret = cx24117_load_firmware(fe, fw);
 475                if (ret)
 476                        dev_err(&state->priv->i2c->dev,
 477                                "%s: Writing firmware failed\n", __func__);
 478                release_firmware(fw);
 479
 480                dev_info(&state->priv->i2c->dev,
 481                        "%s: Firmware upload %s\n", __func__,
 482                        ret == 0 ? "complete" : "failed");
 483
 484                /* Ensure firmware is always loaded if required */
 485                state->priv->skip_fw_load = 0;
 486        }
 487
 488        return ret;
 489}
 490
 491/* Take a basic firmware command structure, format it
 492 * and forward it for processing
 493 */
 494static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
 495        struct cx24117_cmd *cmd)
 496{
 497        struct cx24117_state *state = fe->demodulator_priv;
 498        int i, ret;
 499
 500        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
 501                __func__, state->demod);
 502
 503        /* Load the firmware if required */
 504        ret = cx24117_firmware_ondemand(fe);
 505        if (ret != 0)
 506                return ret;
 507
 508        /* Write the command */
 509        cx24117_writecmd(state, cmd);
 510
 511        /* Start execution and wait for cmd to terminate */
 512        cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
 513        i = 0;
 514        while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
 515                msleep(20);
 516                if (i++ > 40) {
 517                        /* Avoid looping forever if the firmware does
 518                                not respond */
 519                        dev_warn(&state->priv->i2c->dev,
 520                                "%s() Firmware not responding\n", __func__);
 521                        return -EIO;
 522                }
 523        }
 524        return 0;
 525}
 526
 527static int cx24117_cmd_execute(struct dvb_frontend *fe, struct cx24117_cmd *cmd)
 528{
 529        struct cx24117_state *state = fe->demodulator_priv;
 530        int ret;
 531
 532        mutex_lock(&state->priv->fe_lock);
 533        ret = cx24117_cmd_execute_nolock(fe, cmd);
 534        mutex_unlock(&state->priv->fe_lock);
 535
 536        return ret;
 537}
 538
 539static int cx24117_load_firmware(struct dvb_frontend *fe,
 540        const struct firmware *fw)
 541{
 542        struct cx24117_state *state = fe->demodulator_priv;
 543        struct cx24117_cmd cmd;
 544        int i, ret;
 545        unsigned char vers[4];
 546
 547        struct i2c_msg msg;
 548        u8 *buf;
 549
 550        dev_dbg(&state->priv->i2c->dev,
 551                "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
 552                __func__, state->demod, fw->size, fw->data[0], fw->data[1],
 553                fw->data[fw->size - 2], fw->data[fw->size - 1]);
 554
 555        cx24117_writereg(state, 0xea, 0x00);
 556        cx24117_writereg(state, 0xea, 0x01);
 557        cx24117_writereg(state, 0xea, 0x00);
 558
 559        cx24117_writereg(state, 0xce, 0x92);
 560
 561        cx24117_writereg(state, 0xfb, 0x00);
 562        cx24117_writereg(state, 0xfc, 0x00);
 563
 564        cx24117_writereg(state, 0xc3, 0x04);
 565        cx24117_writereg(state, 0xc4, 0x04);
 566
 567        cx24117_writereg(state, 0xce, 0x00);
 568        cx24117_writereg(state, 0xcf, 0x00);
 569
 570        cx24117_writereg(state, 0xea, 0x00);
 571        cx24117_writereg(state, 0xeb, 0x0c);
 572        cx24117_writereg(state, 0xec, 0x06);
 573        cx24117_writereg(state, 0xed, 0x05);
 574        cx24117_writereg(state, 0xee, 0x03);
 575        cx24117_writereg(state, 0xef, 0x05);
 576
 577        cx24117_writereg(state, 0xf3, 0x03);
 578        cx24117_writereg(state, 0xf4, 0x44);
 579
 580        cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
 581        cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
 582
 583        cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
 584        cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
 585
 586        cx24117_writereg(state, 0xf2, 0x04);
 587        cx24117_writereg(state, 0xe8, 0x02);
 588        cx24117_writereg(state, 0xea, 0x01);
 589        cx24117_writereg(state, 0xc8, 0x00);
 590        cx24117_writereg(state, 0xc9, 0x00);
 591        cx24117_writereg(state, 0xca, 0x00);
 592        cx24117_writereg(state, 0xcb, 0x00);
 593        cx24117_writereg(state, 0xcc, 0x00);
 594        cx24117_writereg(state, 0xcd, 0x00);
 595        cx24117_writereg(state, 0xe4, 0x03);
 596        cx24117_writereg(state, 0xeb, 0x0a);
 597
 598        cx24117_writereg(state, 0xfb, 0x00);
 599        cx24117_writereg(state, 0xe0, 0x76);
 600        cx24117_writereg(state, 0xf7, 0x81);
 601        cx24117_writereg(state, 0xf8, 0x00);
 602        cx24117_writereg(state, 0xf9, 0x00);
 603
 604        buf = kmalloc(fw->size + 1, GFP_KERNEL);
 605        if (buf == NULL) {
 606                state->priv->skip_fw_load = 0;
 607                return -ENOMEM;
 608        }
 609
 610        /* fw upload reg */
 611        buf[0] = 0xfa;
 612        memcpy(&buf[1], fw->data, fw->size);
 613
 614        /* prepare i2c message to send */
 615        msg.addr = state->priv->demod_address;
 616        msg.flags = 0;
 617        msg.len = fw->size + 1;
 618        msg.buf = buf;
 619
 620        /* send fw */
 621        ret = i2c_transfer(state->priv->i2c, &msg, 1);
 622        if (ret < 0) {
 623                kfree(buf);
 624                return ret;
 625        }
 626
 627        kfree(buf);
 628
 629        cx24117_writereg(state, 0xf7, 0x0c);
 630        cx24117_writereg(state, 0xe0, 0x00);
 631
 632        /* Init demodulator */
 633        cmd.args[0] = CMD_DEMODINIT;
 634        cmd.args[1] = 0x00;
 635        cmd.args[2] = 0x01;
 636        cmd.args[3] = 0x00;
 637        cmd.len = 4;
 638        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 639        if (ret != 0)
 640                goto error;
 641
 642        /* Set VCO frequency */
 643        cmd.args[0] = CMD_SET_VCOFREQ;
 644        cmd.args[1] = 0x06;
 645        cmd.args[2] = 0x2b;
 646        cmd.args[3] = 0xd8;
 647        cmd.args[4] = 0xa5;
 648        cmd.args[5] = 0xee;
 649        cmd.args[6] = 0x03;
 650        cmd.args[7] = 0x9d;
 651        cmd.args[8] = 0xfc;
 652        cmd.args[9] = 0x06;
 653        cmd.args[10] = 0x02;
 654        cmd.args[11] = 0x9d;
 655        cmd.args[12] = 0xfc;
 656        cmd.len = 13;
 657        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 658        if (ret != 0)
 659                goto error;
 660
 661        /* Tuner init */
 662        cmd.args[0] = CMD_TUNERINIT;
 663        cmd.args[1] = 0x00;
 664        cmd.args[2] = 0x01;
 665        cmd.args[3] = 0x00;
 666        cmd.args[4] = 0x00;
 667        cmd.args[5] = 0x01;
 668        cmd.args[6] = 0x01;
 669        cmd.args[7] = 0x01;
 670        cmd.args[8] = 0x00;
 671        cmd.args[9] = 0x05;
 672        cmd.args[10] = 0x02;
 673        cmd.args[11] = 0x02;
 674        cmd.args[12] = 0x00;
 675        cmd.len = 13;
 676        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 677        if (ret != 0)
 678                goto error;
 679
 680        /* Global MPEG config */
 681        cmd.args[0] = CMD_GLOBAL_MPEGCFG;
 682        cmd.args[1] = 0x00;
 683        cmd.args[2] = 0x00;
 684        cmd.args[3] = 0x00;
 685        cmd.args[4] = 0x01;
 686        cmd.args[5] = 0x00;
 687        cmd.len = 6;
 688        ret = cx24117_cmd_execute_nolock(fe, &cmd);
 689        if (ret != 0)
 690                goto error;
 691
 692        /* MPEG config for each demod */
 693        for (i = 0; i < 2; i++) {
 694                cmd.args[0] = CMD_MPEGCFG;
 695                cmd.args[1] = (u8) i;
 696                cmd.args[2] = 0x00;
 697                cmd.args[3] = 0x05;
 698                cmd.args[4] = 0x00;
 699                cmd.args[5] = 0x00;
 700                cmd.args[6] = 0x55;
 701                cmd.args[7] = 0x00;
 702                cmd.len = 8;
 703                ret = cx24117_cmd_execute_nolock(fe, &cmd);
 704                if (ret != 0)
 705                        goto error;
 706        }
 707
 708        cx24117_writereg(state, 0xce, 0xc0);
 709        cx24117_writereg(state, 0xcf, 0x00);
 710        cx24117_writereg(state, 0xe5, 0x04);
 711
 712        /* Get firmware version */
 713        cmd.args[0] = CMD_FWVERSION;
 714        cmd.len = 2;
 715        for (i = 0; i < 4; i++) {
 716                cmd.args[1] = i;
 717                ret = cx24117_cmd_execute_nolock(fe, &cmd);
 718                if (ret != 0)
 719                        goto error;
 720                vers[i] = cx24117_readreg(state, 0x33);
 721        }
 722        dev_info(&state->priv->i2c->dev,
 723                "%s: FW version %i.%i.%i.%i\n", __func__,
 724                vers[0], vers[1], vers[2], vers[3]);
 725        return 0;
 726error:
 727        state->priv->skip_fw_load = 0;
 728        dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n", __func__);
 729        return ret;
 730}
 731
 732static int cx24117_read_status(struct dvb_frontend *fe, enum fe_status *status)
 733{
 734        struct cx24117_state *state = fe->demodulator_priv;
 735        int lock;
 736
 737        lock = cx24117_readreg(state,
 738                (state->demod == 0) ? CX24117_REG_SSTATUS0 :
 739                                      CX24117_REG_SSTATUS1) &
 740                CX24117_STATUS_MASK;
 741
 742        dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
 743                __func__, state->demod, lock);
 744
 745        *status = 0;
 746
 747        if (lock & CX24117_HAS_SIGNAL)
 748                *status |= FE_HAS_SIGNAL;
 749        if (lock & CX24117_HAS_CARRIER)
 750                *status |= FE_HAS_CARRIER;
 751        if (lock & CX24117_HAS_VITERBI)
 752                *status |= FE_HAS_VITERBI;
 753        if (lock & CX24117_HAS_SYNCLOCK)
 754                *status |= FE_HAS_SYNC | FE_HAS_LOCK;
 755
 756        return 0;
 757}
 758
 759static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
 760{
 761        struct cx24117_state *state = fe->demodulator_priv;
 762        int ret;
 763        u8 buf[4];
 764        u8 base_reg = (state->demod == 0) ?
 765                        CX24117_REG_BER4_0 :
 766                        CX24117_REG_BER4_1;
 767
 768        ret = cx24117_readregN(state, base_reg, buf, 4);
 769        if (ret != 0)
 770                return ret;
 771
 772        *ber = (buf[0] << 24) | (buf[1] << 16) |
 773                (buf[1] << 8) | buf[0];
 774
 775        dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
 776                __func__, state->demod, *ber);
 777
 778        return 0;
 779}
 780
 781static int cx24117_read_signal_strength(struct dvb_frontend *fe,
 782        u16 *signal_strength)
 783{
 784        struct cx24117_state *state = fe->demodulator_priv;
 785        struct cx24117_cmd cmd;
 786        int ret;
 787        u16 sig_reading;
 788        u8 buf[2];
 789        u8 reg = (state->demod == 0) ?
 790                CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
 791
 792        /* Read AGC accumulator register */
 793        cmd.args[0] = CMD_GET_AGCACC;
 794        cmd.args[1] = (u8) state->demod;
 795        cmd.len = 2;
 796        ret = cx24117_cmd_execute(fe, &cmd);
 797        if (ret != 0)
 798                return ret;
 799
 800        ret = cx24117_readregN(state, reg, buf, 2);
 801        if (ret != 0)
 802                return ret;
 803        sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
 804
 805        *signal_strength = -100 * sig_reading + 94324;
 806
 807        dev_dbg(&state->priv->i2c->dev,
 808                "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
 809                __func__, state->demod, sig_reading, *signal_strength);
 810
 811        return 0;
 812}
 813
 814static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
 815{
 816        struct cx24117_state *state = fe->demodulator_priv;
 817        int ret;
 818        u8 buf[2];
 819        u8 reg = (state->demod == 0) ?
 820                CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
 821
 822        ret = cx24117_readregN(state, reg, buf, 2);
 823        if (ret != 0)
 824                return ret;
 825
 826        *snr = (buf[0] << 8) | buf[1];
 827
 828        dev_dbg(&state->priv->i2c->dev,
 829                "%s() demod%d snr = 0x%04x\n",
 830                __func__, state->demod, *snr);
 831
 832        return ret;
 833}
 834
 835static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 836{
 837        struct cx24117_state *state = fe->demodulator_priv;
 838        enum fe_delivery_system delsys = fe->dtv_property_cache.delivery_system;
 839        int ret;
 840        u8 buf[2];
 841        u8 reg = (state->demod == 0) ?
 842                CX24117_REG_DVBS_UCB2_0 :
 843                CX24117_REG_DVBS_UCB2_1;
 844
 845        switch (delsys) {
 846        case SYS_DVBS:
 847                break;
 848        case SYS_DVBS2:
 849                reg += (CX24117_REG_DVBS2_UCB2_0 - CX24117_REG_DVBS_UCB2_0);
 850                break;
 851        default:
 852                return -EINVAL;
 853        }
 854
 855        ret = cx24117_readregN(state, reg, buf, 2);
 856        if (ret != 0)
 857                return ret;
 858        *ucblocks = (buf[0] << 8) | buf[1];
 859
 860        dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
 861                __func__, state->demod, *ucblocks);
 862
 863        return 0;
 864}
 865
 866/* Overwrite the current tuning params, we are about to tune */
 867static void cx24117_clone_params(struct dvb_frontend *fe)
 868{
 869        struct cx24117_state *state = fe->demodulator_priv;
 870        state->dcur = state->dnxt;
 871}
 872
 873/* Wait for LNB */
 874static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
 875{
 876        struct cx24117_state *state = fe->demodulator_priv;
 877        int i;
 878        u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
 879                                            CX24117_REG_QSTATUS1;
 880
 881        dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
 882                __func__, state->demod, cx24117_readreg(state, reg));
 883
 884        /* Wait for up to 300 ms */
 885        for (i = 0; i < 10; i++) {
 886                val = cx24117_readreg(state, reg) & 0x01;
 887                if (val != 0)
 888                        return 0;
 889                msleep(30);
 890        }
 891
 892        dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
 893                KBUILD_MODNAME, state->demod);
 894
 895        return -ETIMEDOUT; /* -EBUSY ? */
 896}
 897
 898static int cx24117_set_voltage(struct dvb_frontend *fe,
 899                               enum fe_sec_voltage voltage)
 900{
 901        struct cx24117_state *state = fe->demodulator_priv;
 902        struct cx24117_cmd cmd;
 903        int ret;
 904        u8 reg = (state->demod == 0) ? 0x10 : 0x20;
 905
 906        dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
 907                __func__, state->demod,
 908                voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 909                voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
 910                "SEC_VOLTAGE_OFF");
 911
 912        /* Prepare a set GPIO logic level CMD */
 913        cmd.args[0] = CMD_SET_GPIOOUT;
 914        cmd.args[2] = reg; /* mask */
 915        cmd.len = 3;
 916
 917        if ((voltage == SEC_VOLTAGE_13) ||
 918            (voltage == SEC_VOLTAGE_18)) {
 919                /* power on LNB */
 920                cmd.args[1] = reg;
 921                ret = cx24117_cmd_execute(fe, &cmd);
 922                if (ret != 0)
 923                        return ret;
 924
 925                ret = cx24117_wait_for_lnb(fe);
 926                if (ret != 0)
 927                        return ret;
 928
 929                /* Wait for voltage/min repeat delay */
 930                msleep(100);
 931
 932                /* Set 13V/18V select pin */
 933                cmd.args[0] = CMD_LNBDCLEVEL;
 934                cmd.args[1] = state->demod ? 0 : 1;
 935                cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
 936                cmd.len = 3;
 937                ret = cx24117_cmd_execute(fe, &cmd);
 938
 939                /* Min delay time before DiSEqC send */
 940                msleep(20);
 941        } else {
 942                /* power off LNB */
 943                cmd.args[1] = 0x00;
 944                ret = cx24117_cmd_execute(fe, &cmd);
 945        }
 946
 947        return ret;
 948}
 949
 950static int cx24117_set_tone(struct dvb_frontend *fe,
 951                            enum fe_sec_tone_mode tone)
 952{
 953        struct cx24117_state *state = fe->demodulator_priv;
 954        struct cx24117_cmd cmd;
 955        int ret;
 956
 957        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
 958                __func__, state->demod, tone);
 959        if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
 960                dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid tone=%d\n",
 961                        KBUILD_MODNAME, state->demod, tone);
 962                return -EINVAL;
 963        }
 964
 965        /* Wait for LNB ready */
 966        ret = cx24117_wait_for_lnb(fe);
 967        if (ret != 0)
 968                return ret;
 969
 970        /* Min delay time after DiSEqC send */
 971        msleep(20);
 972
 973        /* Set the tone */
 974        cmd.args[0] = CMD_LNBPCBCONFIG;
 975        cmd.args[1] = (state->demod ? 0 : 1);
 976        cmd.args[2] = 0x00;
 977        cmd.args[3] = 0x00;
 978        cmd.len = 5;
 979        switch (tone) {
 980        case SEC_TONE_ON:
 981                cmd.args[4] = 0x01;
 982                break;
 983        case SEC_TONE_OFF:
 984                cmd.args[4] = 0x00;
 985                break;
 986        }
 987
 988        msleep(20);
 989
 990        return cx24117_cmd_execute(fe, &cmd);
 991}
 992
 993/* Initialise DiSEqC */
 994static int cx24117_diseqc_init(struct dvb_frontend *fe)
 995{
 996        struct cx24117_state *state = fe->demodulator_priv;
 997
 998        /* Prepare a DiSEqC command */
 999        state->dsec_cmd.args[0] = CMD_LNBSEND;
1000
1001        /* demod */
1002        state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
1003
1004        /* DiSEqC burst */
1005        state->dsec_cmd.args[CX24117_DISEQC_BURST] = CX24117_DISEQC_MINI_A;
1006
1007        /* Unknown */
1008        state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
1009        state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
1010
1011        /* Continuation flag? */
1012        state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
1013
1014        /* DiSEqC message length */
1015        state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
1016
1017        /* Command length */
1018        state->dsec_cmd.len = 7;
1019
1020        return 0;
1021}
1022
1023/* Send DiSEqC message */
1024static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
1025        struct dvb_diseqc_master_cmd *d)
1026{
1027        struct cx24117_state *state = fe->demodulator_priv;
1028        int i, ret;
1029
1030        /* Dump DiSEqC message */
1031        dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
1032                __func__, state->demod);
1033        for (i = 0; i < d->msg_len; i++)
1034                dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
1035        dev_dbg(&state->priv->i2c->dev, ")\n");
1036
1037        /* Validate length */
1038        if (d->msg_len > sizeof(d->msg))
1039                return -EINVAL;
1040
1041        /* DiSEqC message */
1042        for (i = 0; i < d->msg_len; i++)
1043                state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] = d->msg[i];
1044
1045        /* DiSEqC message length */
1046        state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
1047
1048        /* Command length */
1049        state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
1050                state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
1051
1052        /*
1053         * Message is sent with derived else cached burst
1054         *
1055         * WRITE PORT GROUP COMMAND 38
1056         *
1057         * 0/A/A: E0 10 38 F0..F3
1058         * 1/B/B: E0 10 38 F4..F7
1059         * 2/C/A: E0 10 38 F8..FB
1060         * 3/D/B: E0 10 38 FC..FF
1061         *
1062         * databyte[3]= 8421:8421
1063         *              ABCD:WXYZ
1064         *              CLR :SET
1065         *
1066         *              WX= PORT SELECT 0..3    (X=TONEBURST)
1067         *              Y = VOLTAGE             (0=13V, 1=18V)
1068         *              Z = BAND                (0=LOW, 1=HIGH(22K))
1069         */
1070        if (d->msg_len >= 4 && d->msg[2] == 0x38)
1071                state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1072                        ((d->msg[3] & 4) >> 2);
1073
1074        dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
1075                __func__, state->demod,
1076                state->dsec_cmd.args[CX24117_DISEQC_BURST]);
1077
1078        /* Wait for LNB ready */
1079        ret = cx24117_wait_for_lnb(fe);
1080        if (ret != 0)
1081                return ret;
1082
1083        /* Wait for voltage/min repeat delay */
1084        msleep(100);
1085
1086        /* Command */
1087        ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
1088        if (ret != 0)
1089                return ret;
1090        /*
1091         * Wait for send
1092         *
1093         * Eutelsat spec:
1094         * >15ms delay          + (XXX determine if FW does this, see set_tone)
1095         *  13.5ms per byte     +
1096         * >15ms delay          +
1097         *  12.5ms burst        +
1098         * >15ms delay            (XXX determine if FW does this, see set_tone)
1099         */
1100        msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
1101
1102        return 0;
1103}
1104
1105/* Send DiSEqC burst */
1106static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
1107        enum fe_sec_mini_cmd burst)
1108{
1109        struct cx24117_state *state = fe->demodulator_priv;
1110
1111        dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
1112                __func__, burst, state->demod);
1113
1114        /* DiSEqC burst */
1115        if (burst == SEC_MINI_A)
1116                state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1117                        CX24117_DISEQC_MINI_A;
1118        else if (burst == SEC_MINI_B)
1119                state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1120                        CX24117_DISEQC_MINI_B;
1121        else
1122                return -EINVAL;
1123
1124        return 0;
1125}
1126
1127static int cx24117_get_priv(struct cx24117_priv **priv,
1128        struct i2c_adapter *i2c, u8 client_address)
1129{
1130        int ret;
1131
1132        mutex_lock(&cx24117_list_mutex);
1133        ret = hybrid_tuner_request_state(struct cx24117_priv, (*priv),
1134                hybrid_tuner_instance_list, i2c, client_address, "cx24117");
1135        mutex_unlock(&cx24117_list_mutex);
1136
1137        return ret;
1138}
1139
1140static void cx24117_release_priv(struct cx24117_priv *priv)
1141{
1142        mutex_lock(&cx24117_list_mutex);
1143        if (priv != NULL)
1144                hybrid_tuner_release_state(priv);
1145        mutex_unlock(&cx24117_list_mutex);
1146}
1147
1148static void cx24117_release(struct dvb_frontend *fe)
1149{
1150        struct cx24117_state *state = fe->demodulator_priv;
1151        dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
1152                __func__, state->demod);
1153        cx24117_release_priv(state->priv);
1154        kfree(state);
1155}
1156
1157static const struct dvb_frontend_ops cx24117_ops;
1158
1159struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
1160        struct i2c_adapter *i2c)
1161{
1162        struct cx24117_state *state = NULL;
1163        struct cx24117_priv *priv = NULL;
1164        int demod = 0;
1165
1166        /* get the common data struct for both demods */
1167        demod = cx24117_get_priv(&priv, i2c, config->demod_address);
1168
1169        switch (demod) {
1170        case 0:
1171                dev_err(&i2c->dev,
1172                        "%s: Error attaching frontend %d\n",
1173                        KBUILD_MODNAME, demod);
1174                goto error1;
1175                break;
1176        case 1:
1177                /* new priv instance */
1178                priv->i2c = i2c;
1179                priv->demod_address = config->demod_address;
1180                mutex_init(&priv->fe_lock);
1181                break;
1182        default:
1183                /* existing priv instance */
1184                break;
1185        }
1186
1187        /* allocate memory for the internal state */
1188        state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1189        if (state == NULL)
1190                goto error2;
1191
1192        state->demod = demod - 1;
1193        state->priv = priv;
1194
1195        dev_info(&state->priv->i2c->dev,
1196                "%s: Attaching frontend %d\n",
1197                KBUILD_MODNAME, state->demod);
1198
1199        /* create dvb_frontend */
1200        memcpy(&state->frontend.ops, &cx24117_ops,
1201                sizeof(struct dvb_frontend_ops));
1202        state->frontend.demodulator_priv = state;
1203        return &state->frontend;
1204
1205error2:
1206        cx24117_release_priv(priv);
1207error1:
1208        return NULL;
1209}
1210EXPORT_SYMBOL_GPL(cx24117_attach);
1211
1212/*
1213 * Initialise or wake up device
1214 *
1215 * Power config will reset and load initial firmware if required
1216 */
1217static int cx24117_initfe(struct dvb_frontend *fe)
1218{
1219        struct cx24117_state *state = fe->demodulator_priv;
1220        struct cx24117_cmd cmd;
1221        int ret;
1222
1223        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1224                __func__, state->demod);
1225
1226        mutex_lock(&state->priv->fe_lock);
1227
1228        /* Set sleep mode off */
1229        cmd.args[0] = CMD_SET_SLEEPMODE;
1230        cmd.args[1] = (state->demod ? 1 : 0);
1231        cmd.args[2] = 0;
1232        cmd.len = 3;
1233        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1234        if (ret != 0)
1235                goto exit;
1236
1237        ret = cx24117_diseqc_init(fe);
1238        if (ret != 0)
1239                goto exit;
1240
1241        /* Set BER control */
1242        cmd.args[0] = CMD_BERCTRL;
1243        cmd.args[1] = (state->demod ? 1 : 0);
1244        cmd.args[2] = 0x10;
1245        cmd.args[3] = 0x10;
1246        cmd.len = 4;
1247        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1248        if (ret != 0)
1249                goto exit;
1250
1251        /* Set RS correction (enable/disable) */
1252        cmd.args[0] = CMD_ENABLERSCORR;
1253        cmd.args[1] = (state->demod ? 1 : 0);
1254        cmd.args[2] = CX24117_OCC;
1255        cmd.len = 3;
1256        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1257        if (ret != 0)
1258                goto exit;
1259
1260        /* Set GPIO direction */
1261        /* Set as output - controls LNB power on/off */
1262        cmd.args[0] = CMD_SET_GPIODIR;
1263        cmd.args[1] = 0x30;
1264        cmd.args[2] = 0x30;
1265        cmd.len = 3;
1266        ret = cx24117_cmd_execute_nolock(fe, &cmd);
1267
1268exit:
1269        mutex_unlock(&state->priv->fe_lock);
1270
1271        return ret;
1272}
1273
1274/*
1275 * Put device to sleep
1276 */
1277static int cx24117_sleep(struct dvb_frontend *fe)
1278{
1279        struct cx24117_state *state = fe->demodulator_priv;
1280        struct cx24117_cmd cmd;
1281
1282        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1283                __func__, state->demod);
1284
1285        /* Set sleep mode on */
1286        cmd.args[0] = CMD_SET_SLEEPMODE;
1287        cmd.args[1] = (state->demod ? 1 : 0);
1288        cmd.args[2] = 1;
1289        cmd.len = 3;
1290        return cx24117_cmd_execute(fe, &cmd);
1291}
1292
1293/* dvb-core told us to tune, the tv property cache will be complete,
1294 * it's safe for is to pull values and use them for tuning purposes.
1295 */
1296static int cx24117_set_frontend(struct dvb_frontend *fe)
1297{
1298        struct cx24117_state *state = fe->demodulator_priv;
1299        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1300        struct cx24117_cmd cmd;
1301        enum fe_status tunerstat;
1302        int i, status, ret, retune = 1;
1303        u8 reg_clkdiv, reg_ratediv;
1304
1305        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1306                __func__, state->demod);
1307
1308        switch (c->delivery_system) {
1309        case SYS_DVBS:
1310                dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1311                        __func__, state->demod);
1312
1313                /* Only QPSK is supported for DVB-S */
1314                if (c->modulation != QPSK) {
1315                        dev_dbg(&state->priv->i2c->dev,
1316                                "%s() demod%d unsupported modulation (%d)\n",
1317                                __func__, state->demod, c->modulation);
1318                        return -EINVAL;
1319                }
1320
1321                /* Pilot doesn't exist in DVB-S, turn bit off */
1322                state->dnxt.pilot_val = CX24117_PILOT_OFF;
1323
1324                /* DVB-S only supports 0.35 */
1325                state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1326                break;
1327
1328        case SYS_DVBS2:
1329                dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1330                        __func__, state->demod);
1331
1332                /*
1333                 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1334                 * but not hardware auto detection
1335                 */
1336                if (c->modulation != PSK_8 && c->modulation != QPSK) {
1337                        dev_dbg(&state->priv->i2c->dev,
1338                                "%s() demod%d unsupported modulation (%d)\n",
1339                                __func__, state->demod, c->modulation);
1340                        return -EOPNOTSUPP;
1341                }
1342
1343                switch (c->pilot) {
1344                case PILOT_AUTO:
1345                        state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1346                        break;
1347                case PILOT_OFF:
1348                        state->dnxt.pilot_val = CX24117_PILOT_OFF;
1349                        break;
1350                case PILOT_ON:
1351                        state->dnxt.pilot_val = CX24117_PILOT_ON;
1352                        break;
1353                default:
1354                        dev_dbg(&state->priv->i2c->dev,
1355                                "%s() demod%d unsupported pilot mode (%d)\n",
1356                                __func__, state->demod, c->pilot);
1357                        return -EOPNOTSUPP;
1358                }
1359
1360                switch (c->rolloff) {
1361                case ROLLOFF_20:
1362                        state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1363                        break;
1364                case ROLLOFF_25:
1365                        state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1366                        break;
1367                case ROLLOFF_35:
1368                        state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1369                        break;
1370                case ROLLOFF_AUTO:
1371                        state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1372                        /* soft-auto rolloff */
1373                        retune = 3;
1374                        break;
1375                default:
1376                        dev_warn(&state->priv->i2c->dev,
1377                                "%s: demod%d unsupported rolloff (%d)\n",
1378                                KBUILD_MODNAME, state->demod, c->rolloff);
1379                        return -EOPNOTSUPP;
1380                }
1381                break;
1382
1383        default:
1384                dev_warn(&state->priv->i2c->dev,
1385                        "%s: demod %d unsupported delivery system (%d)\n",
1386                        KBUILD_MODNAME, state->demod, c->delivery_system);
1387                return -EINVAL;
1388        }
1389
1390        state->dnxt.delsys = c->delivery_system;
1391        state->dnxt.modulation = c->modulation;
1392        state->dnxt.frequency = c->frequency;
1393        state->dnxt.pilot = c->pilot;
1394        state->dnxt.rolloff = c->rolloff;
1395
1396        ret = cx24117_set_inversion(state, c->inversion);
1397        if (ret !=  0)
1398                return ret;
1399
1400        ret = cx24117_set_fec(state,
1401                c->delivery_system, c->modulation, c->fec_inner);
1402        if (ret !=  0)
1403                return ret;
1404
1405        ret = cx24117_set_symbolrate(state, c->symbol_rate);
1406        if (ret !=  0)
1407                return ret;
1408
1409        /* discard the 'current' tuning parameters and prepare to tune */
1410        cx24117_clone_params(fe);
1411
1412        dev_dbg(&state->priv->i2c->dev,
1413                "%s: delsys      = %d\n", __func__, state->dcur.delsys);
1414        dev_dbg(&state->priv->i2c->dev,
1415                "%s: modulation  = %d\n", __func__, state->dcur.modulation);
1416        dev_dbg(&state->priv->i2c->dev,
1417                "%s: frequency   = %d\n", __func__, state->dcur.frequency);
1418        dev_dbg(&state->priv->i2c->dev,
1419                "%s: pilot       = %d (val = 0x%02x)\n", __func__,
1420                state->dcur.pilot, state->dcur.pilot_val);
1421        dev_dbg(&state->priv->i2c->dev,
1422                "%s: retune      = %d\n", __func__, retune);
1423        dev_dbg(&state->priv->i2c->dev,
1424                "%s: rolloff     = %d (val = 0x%02x)\n", __func__,
1425                state->dcur.rolloff, state->dcur.rolloff_val);
1426        dev_dbg(&state->priv->i2c->dev,
1427                "%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1428        dev_dbg(&state->priv->i2c->dev,
1429                "%s: FEC         = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1430                state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1431        dev_dbg(&state->priv->i2c->dev,
1432                "%s: Inversion   = %d (val = 0x%02x)\n", __func__,
1433                state->dcur.inversion, state->dcur.inversion_val);
1434
1435        /* Prepare a tune request */
1436        cmd.args[0] = CMD_TUNEREQUEST;
1437
1438        /* demod */
1439        cmd.args[1] = state->demod;
1440
1441        /* Frequency */
1442        cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1443        cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1444        cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1445
1446        /* Symbol Rate */
1447        cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1448        cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1449
1450        /* Automatic Inversion */
1451        cmd.args[7] = state->dcur.inversion_val;
1452
1453        /* Modulation / FEC / Pilot */
1454        cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1455
1456        cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1457        cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1458
1459        cmd.args[11] = state->dcur.rolloff_val;
1460        cmd.args[12] = state->dcur.fec_mask;
1461
1462        if (state->dcur.symbol_rate > 30000000) {
1463                reg_ratediv = 0x04;
1464                reg_clkdiv = 0x02;
1465        } else if (state->dcur.symbol_rate > 10000000) {
1466                reg_ratediv = 0x06;
1467                reg_clkdiv = 0x03;
1468        } else {
1469                reg_ratediv = 0x0a;
1470                reg_clkdiv = 0x05;
1471        }
1472
1473        cmd.args[13] = reg_ratediv;
1474        cmd.args[14] = reg_clkdiv;
1475
1476        cx24117_writereg(state, (state->demod == 0) ?
1477                CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1478        cx24117_writereg(state, (state->demod == 0) ?
1479                CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1480
1481        cmd.args[15] = CX24117_PNE;
1482        cmd.len = 16;
1483
1484        do {
1485                /* Reset status register */
1486                status = cx24117_readreg(state, (state->demod == 0) ?
1487                        CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1488                        CX24117_SIGNAL_MASK;
1489
1490                dev_dbg(&state->priv->i2c->dev,
1491                        "%s() demod%d status_setfe = %02x\n",
1492                        __func__, state->demod, status);
1493
1494                cx24117_writereg(state, (state->demod == 0) ?
1495                        CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1496
1497                /* Tune */
1498                ret = cx24117_cmd_execute(fe, &cmd);
1499                if (ret != 0)
1500                        break;
1501
1502                /*
1503                 * Wait for up to 500 ms before retrying
1504                 *
1505                 * If we are able to tune then generally it occurs within 100ms.
1506                 * If it takes longer, try a different rolloff setting.
1507                 */
1508                for (i = 0; i < 50; i++) {
1509                        cx24117_read_status(fe, &tunerstat);
1510                        status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1511                        if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1512                                dev_dbg(&state->priv->i2c->dev,
1513                                        "%s() demod%d tuned\n",
1514                                        __func__, state->demod);
1515                                return 0;
1516                        }
1517                        msleep(20);
1518                }
1519
1520                dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1521                        __func__, state->demod);
1522
1523                /* try next rolloff value */
1524                if (state->dcur.rolloff == 3)
1525                        cmd.args[11]--;
1526
1527        } while (--retune);
1528        return -EINVAL;
1529}
1530
1531static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1532        unsigned int mode_flags, unsigned int *delay, enum fe_status *status)
1533{
1534        struct cx24117_state *state = fe->demodulator_priv;
1535
1536        dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1537                __func__, state->demod);
1538
1539        *delay = HZ / 5;
1540        if (re_tune) {
1541                int ret = cx24117_set_frontend(fe);
1542                if (ret)
1543                        return ret;
1544        }
1545        return cx24117_read_status(fe, status);
1546}
1547
1548static enum dvbfe_algo cx24117_get_algo(struct dvb_frontend *fe)
1549{
1550        return DVBFE_ALGO_HW;
1551}
1552
1553static int cx24117_get_frontend(struct dvb_frontend *fe,
1554                                struct dtv_frontend_properties *c)
1555{
1556        struct cx24117_state *state = fe->demodulator_priv;
1557        struct cx24117_cmd cmd;
1558        u8 reg, st, inv;
1559        int ret, idx;
1560        unsigned int freq;
1561        short srate_os, freq_os;
1562
1563        u8 buf[0x1f-4];
1564
1565        /* Read current tune parameters */
1566        cmd.args[0] = CMD_GETCTLACC;
1567        cmd.args[1] = (u8) state->demod;
1568        cmd.len = 2;
1569        ret = cx24117_cmd_execute(fe, &cmd);
1570        if (ret != 0)
1571                return ret;
1572
1573        /* read all required regs at once */
1574        reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1575        ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1576        if (ret != 0)
1577                return ret;
1578
1579        st = buf[5];
1580
1581        /* get spectral inversion */
1582        inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1583        if (inv == 0)
1584                c->inversion = INVERSION_OFF;
1585        else
1586                c->inversion = INVERSION_ON;
1587
1588        /* modulation and fec */
1589        idx = st & 0x3f;
1590        if (c->delivery_system == SYS_DVBS2) {
1591                if (idx > 11)
1592                        idx += 9;
1593                else
1594                        idx += 7;
1595        }
1596
1597        c->modulation = cx24117_modfec_modes[idx].modulation;
1598        c->fec_inner = cx24117_modfec_modes[idx].fec;
1599
1600        /* frequency */
1601        freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1602        freq_os = (buf[8] << 8) | buf[9];
1603        c->frequency = freq + freq_os;
1604
1605        /* symbol rate */
1606        srate_os = (buf[10] << 8) | buf[11];
1607        c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1608        return 0;
1609}
1610
1611static const struct dvb_frontend_ops cx24117_ops = {
1612        .delsys = { SYS_DVBS, SYS_DVBS2 },
1613        .info = {
1614                .name = "Conexant CX24117/CX24132",
1615                .frequency_min_hz =  950 * MHz,
1616                .frequency_max_hz = 2150 * MHz,
1617                .frequency_stepsize_hz = 1011 * kHz,
1618                .frequency_tolerance_hz = 5 * MHz,
1619                .symbol_rate_min = 1000000,
1620                .symbol_rate_max = 45000000,
1621                .caps = FE_CAN_INVERSION_AUTO |
1622                        FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1623                        FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1624                        FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1625                        FE_CAN_2G_MODULATION |
1626                        FE_CAN_QPSK | FE_CAN_RECOVER
1627        },
1628
1629        .release = cx24117_release,
1630
1631        .init = cx24117_initfe,
1632        .sleep = cx24117_sleep,
1633        .read_status = cx24117_read_status,
1634        .read_ber = cx24117_read_ber,
1635        .read_signal_strength = cx24117_read_signal_strength,
1636        .read_snr = cx24117_read_snr,
1637        .read_ucblocks = cx24117_read_ucblocks,
1638        .set_tone = cx24117_set_tone,
1639        .set_voltage = cx24117_set_voltage,
1640        .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1641        .diseqc_send_burst = cx24117_diseqc_send_burst,
1642        .get_frontend_algo = cx24117_get_algo,
1643        .tune = cx24117_tune,
1644
1645        .set_frontend = cx24117_set_frontend,
1646        .get_frontend = cx24117_get_frontend,
1647};
1648
1649
1650MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1651MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1652MODULE_LICENSE("GPL");
1653MODULE_VERSION("1.1");
1654MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1655
1656