drivers/media/dvb-frontends/cx24117.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
cx24117_writereg
cx24117_writecmd
cx24117_readreg
cx24117_readregN
cx24117_set_inversion
cx24117_lookup_fecmod
cx24117_set_fec
cx24117_set_symbolrate
cx24117_firmware_ondemand
cx24117_cmd_execute_nolock
cx24117_cmd_execute
cx24117_load_firmware
cx24117_read_status
cx24117_read_ber
cx24117_read_signal_strength
cx24117_read_snr
cx24117_read_ucblocks
cx24117_clone_params
cx24117_wait_for_lnb
cx24117_set_voltage
cx24117_set_tone
cx24117_diseqc_init
cx24117_send_diseqc_msg
cx24117_diseqc_send_burst
cx24117_get_priv
cx24117_release_priv
cx24117_release
cx24117_attach
cx24117_initfe
cx24117_sleep
cx24117_set_frontend
cx24117_tune
cx24117_get_algo
cx24117_get_frontend
   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 
 125 enum 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 
 155 static LIST_HEAD(hybrid_tuner_instance_list);
 156 static DEFINE_MUTEX(cx24117_list_mutex);
 157 
 158 /* The Demod/Tuner can't easily provide these, we cache them */
 159 struct 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 */
 179 struct cx24117_cmd {
 180         u8 len;
 181         u8 args[CX24117_ARGLEN];
 182 };
 183 
 184 /* common to both fe's */
 185 struct 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 */
 197 struct 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 */
 210 static 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 
 257 static 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 
 278 static 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 
 306 static 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 
 331 static 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 
 352 static 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 
 377 static 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 
 398 static 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 
 423 static 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 
 437 static int cx24117_load_firmware(struct dvb_frontend *fe,
 438         const struct firmware *fw);
 439 
 440 static 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  */
 494 static 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 
 527 static 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 
 539 static 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;
 726 error:
 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 
 732 static 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 
 759 static 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 
 781 static 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 
 814 static 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 
 835 static 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 */
 867 static 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 */
 874 static 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 
 898 static 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 
 950 static 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 */
 994 static 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 */
1024 static 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 */
1106 static 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 
1127 static 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 
1140 static 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 
1148 static 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 
1157 static const struct dvb_frontend_ops cx24117_ops;
1158 
1159 struct 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 
1205 error2:
1206         cx24117_release_priv(priv);
1207 error1:
1208         return NULL;
1209 }
1210 EXPORT_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  */
1217 static 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 
1268 exit:
1269         mutex_unlock(&state->priv->fe_lock);
1270 
1271         return ret;
1272 }
1273 
1274 /*
1275  * Put device to sleep
1276  */
1277 static 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  */
1296 static 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 
1531 static 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 
1548 static enum dvbfe_algo cx24117_get_algo(struct dvb_frontend *fe)
1549 {
1550         return DVBFE_ALGO_HW;
1551 }
1552 
1553 static 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 
1611 static 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 
1650 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1651 MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1652 MODULE_LICENSE("GPL");
1653 MODULE_VERSION("1.1");
1654 MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1655
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/media/dvb-frontends/cx24117.c

DEFINITIONS
