1 /* 2 * cs42l51.c 3 * 4 * ASoC Driver for Cirrus Logic CS42L51 codecs 5 * 6 * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com> 7 * 8 * Based on cs4270.c - Copyright (c) Freescale Semiconductor 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * For now: 20 * - Only I2C is support. Not SPI 21 * - master mode *NOT* supported 22 */ 23 24 #include <linux/module.h> 25 #include <linux/platform_device.h> 26 #include <linux/slab.h> 27 #include <sound/core.h> 28 #include <sound/soc.h> 29 #include <sound/soc-dapm.h> 30 #include <sound/tlv.h> 31 #include <sound/initval.h> 32 #include <sound/pcm_params.h> 33 #include <sound/pcm.h> 34 #include <linux/i2c.h> 35 36 #include "cs42l51.h" 37 38 enum master_slave_mode { 39 MODE_SLAVE, 40 MODE_SLAVE_AUTO, 41 MODE_MASTER, 42 }; 43 44 struct cs42l51_private { 45 unsigned int mclk; 46 unsigned int audio_mode; /* The mode (I2S or left-justified) */ 47 enum master_slave_mode func; 48 struct snd_soc_codec codec; 49 u8 reg_cache[CS42L51_NUMREGS]; 50 }; 51 52 static struct snd_soc_codec *cs42l51_codec; 53 54 #define CS42L51_FORMATS ( \ 55 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \ 56 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \ 57 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \ 58 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE) 59 60 static int cs42l51_fill_cache(struct snd_soc_codec *codec) 61 { 62 u8 *cache = codec->reg_cache + 1; 63 struct i2c_client *i2c_client = codec->control_data; 64 s32 length; 65 66 length = i2c_smbus_read_i2c_block_data(i2c_client, 67 CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache); 68 if (length != CS42L51_NUMREGS) { 69 dev_err(&i2c_client->dev, 70 "I2C read failure, addr=0x%x (ret=%d vs %d)\n", 71 i2c_client->addr, length, CS42L51_NUMREGS); 72 return -EIO; 73 } 74 75 return 0; 76 } 77 78 static int cs42l51_i2c_probe(struct i2c_client *i2c_client, 79 const struct i2c_device_id *id) 80 { 81 struct snd_soc_codec *codec; 82 struct cs42l51_private *cs42l51; 83 int ret = 0; 84 int reg; 85 86 if (cs42l51_codec) 87 return -EBUSY; 88 89 /* Verify that we have a CS42L51 */ 90 ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID); 91 if (ret < 0) { 92 dev_err(&i2c_client->dev, "failed to read I2C\n"); 93 goto error; 94 } 95 96 if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) && 97 (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) { 98 dev_err(&i2c_client->dev, "Invalid chip id\n"); 99 ret = -ENODEV; 100 goto error; 101 } 102 103 dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n", 104 ret & 7); 105 106 cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL); 107 if (!cs42l51) { 108 dev_err(&i2c_client->dev, "could not allocate codec\n"); 109 return -ENOMEM; 110 } 111 codec = &cs42l51->codec; 112 113 mutex_init(&codec->mutex); 114 INIT_LIST_HEAD(&codec->dapm_widgets); 115 INIT_LIST_HEAD(&codec->dapm_paths); 116 117 codec->dev = &i2c_client->dev; 118 codec->name = "CS42L51"; 119 codec->owner = THIS_MODULE; 120 codec->dai = &cs42l51_dai; 121 codec->num_dai = 1; 122 snd_soc_codec_set_drvdata(codec, cs42l51); 123 124 codec->control_data = i2c_client; 125 codec->reg_cache = cs42l51->reg_cache; 126 codec->reg_cache_size = CS42L51_NUMREGS; 127 i2c_set_clientdata(i2c_client, codec); 128 129 ret = cs42l51_fill_cache(codec); 130 if (ret < 0) { 131 dev_err(&i2c_client->dev, "failed to fill register cache\n"); 132 goto error_alloc; 133 } 134 135 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C); 136 if (ret < 0) { 137 dev_err(&i2c_client->dev, "Failed to set cache I/O: %d\n", ret); 138 goto error_alloc; 139 } 140 141 /* 142 * DAC configuration 143 * - Use signal processor 144 * - auto mute 145 * - vol changes immediate 146 * - no de-emphasize 147 */ 148 reg = CS42L51_DAC_CTL_DATA_SEL(1) 149 | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0); 150 ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg); 151 if (ret < 0) 152 goto error_alloc; 153 154 cs42l51_dai.dev = codec->dev; 155 cs42l51_codec = codec; 156 157 ret = snd_soc_register_codec(codec); 158 if (ret != 0) { 159 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 160 goto error_alloc; 161 } 162 163 ret = snd_soc_register_dai(&cs42l51_dai); 164 if (ret < 0) { 165 dev_err(&i2c_client->dev, "failed to register DAIe\n"); 166 goto error_reg; 167 } 168 169 return 0; 170 171 error_reg: 172 snd_soc_unregister_codec(codec); 173 error_alloc: 174 kfree(cs42l51); 175 error: 176 return ret; 177 } 178 179 static int cs42l51_i2c_remove(struct i2c_client *client) 180 { 181 struct cs42l51_private *cs42l51 = i2c_get_clientdata(client); 182 snd_soc_unregister_dai(&cs42l51_dai); 183 snd_soc_unregister_codec(cs42l51_codec); 184 cs42l51_codec = NULL; 185 kfree(cs42l51); 186 return 0; 187 } 188 189 190 static const struct i2c_device_id cs42l51_id[] = { 191 {"cs42l51", 0}, 192 {} 193 }; 194 MODULE_DEVICE_TABLE(i2c, cs42l51_id); 195 196 static struct i2c_driver cs42l51_i2c_driver = { 197 .driver = { 198 .name = "CS42L51 I2C", 199 .owner = THIS_MODULE, 200 }, 201 .id_table = cs42l51_id, 202 .probe = cs42l51_i2c_probe, 203 .remove = cs42l51_i2c_remove, 204 }; 205 206 static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol, 207 struct snd_ctl_elem_value *ucontrol) 208 { 209 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 210 unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3; 211 212 switch (value) { 213 default: 214 case 0: 215 ucontrol->value.integer.value[0] = 0; 216 break; 217 /* same value : (L+R)/2 and (R+L)/2 */ 218 case 1: 219 case 2: 220 ucontrol->value.integer.value[0] = 1; 221 break; 222 case 3: 223 ucontrol->value.integer.value[0] = 2; 224 break; 225 } 226 227 return 0; 228 } 229 230 #define CHAN_MIX_NORMAL 0x00 231 #define CHAN_MIX_BOTH 0x55 232 #define CHAN_MIX_SWAP 0xFF 233 234 static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol, 235 struct snd_ctl_elem_value *ucontrol) 236 { 237 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 238 unsigned char val; 239 240 switch (ucontrol->value.integer.value[0]) { 241 default: 242 case 0: 243 val = CHAN_MIX_NORMAL; 244 break; 245 case 1: 246 val = CHAN_MIX_BOTH; 247 break; 248 case 2: 249 val = CHAN_MIX_SWAP; 250 break; 251 } 252 253 snd_soc_write(codec, CS42L51_PCM_MIXER, val); 254 255 return 1; 256 } 257 258 static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0); 259 static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0); 260 /* This is a lie. after -102 db, it stays at -102 */ 261 /* maybe a range would be better */ 262 static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0); 263 264 static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0); 265 static const char *chan_mix[] = { 266 "L R", 267 "L+R", 268 "R L", 269 }; 270 271 static const struct soc_enum cs42l51_chan_mix = 272 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix); 273 274 static const struct snd_kcontrol_new cs42l51_snd_controls[] = { 275 SOC_DOUBLE_R_SX_TLV("PCM Playback Volume", 276 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 277 7, 0xffffff99, 0x18, adc_pcm_tlv), 278 SOC_DOUBLE_R("PCM Playback Switch", 279 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1), 280 SOC_DOUBLE_R_SX_TLV("Analog Playback Volume", 281 CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL, 282 8, 0xffffff19, 0x18, aout_tlv), 283 SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume", 284 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 285 7, 0xffffff99, 0x18, adc_pcm_tlv), 286 SOC_DOUBLE_R("ADC Mixer Switch", 287 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1), 288 SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0), 289 SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0), 290 SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0), 291 SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0), 292 SOC_DOUBLE_TLV("Mic Boost Volume", 293 CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv), 294 SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv), 295 SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv), 296 SOC_ENUM_EXT("PCM channel mixer", 297 cs42l51_chan_mix, 298 cs42l51_get_chan_mix, cs42l51_set_chan_mix), 299 }; 300 301 /* 302 * to power down, one must: 303 * 1.) Enable the PDN bit 304 * 2.) enable power-down for the select channels 305 * 3.) disable the PDN bit. 306 */ 307 static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w, 308 struct snd_kcontrol *kcontrol, int event) 309 { 310 unsigned long value; 311 312 value = snd_soc_read(w->codec, CS42L51_POWER_CTL1); 313 value &= ~CS42L51_POWER_CTL1_PDN; 314 315 switch (event) { 316 case SND_SOC_DAPM_PRE_PMD: 317 value |= CS42L51_POWER_CTL1_PDN; 318 break; 319 default: 320 case SND_SOC_DAPM_POST_PMD: 321 break; 322 } 323 snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1, 324 CS42L51_POWER_CTL1_PDN, value); 325 326 return 0; 327 } 328 329 static const char *cs42l51_dac_names[] = {"Direct PCM", 330 "DSP PCM", "ADC"}; 331 static const struct soc_enum cs42l51_dac_mux_enum = 332 SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names); 333 static const struct snd_kcontrol_new cs42l51_dac_mux_controls = 334 SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum); 335 336 static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left", 337 "MIC Left", "MIC+preamp Left"}; 338 static const struct soc_enum cs42l51_adcl_mux_enum = 339 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names); 340 static const struct snd_kcontrol_new cs42l51_adcl_mux_controls = 341 SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum); 342 343 static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right", 344 "MIC Right", "MIC+preamp Right"}; 345 static const struct soc_enum cs42l51_adcr_mux_enum = 346 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names); 347 static const struct snd_kcontrol_new cs42l51_adcr_mux_controls = 348 SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum); 349 350 static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = { 351 SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1), 352 SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0, 353 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), 354 SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0, 355 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), 356 SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture", 357 CS42L51_POWER_CTL1, 1, 1, 358 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), 359 SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture", 360 CS42L51_POWER_CTL1, 2, 1, 361 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), 362 SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback", 363 CS42L51_POWER_CTL1, 5, 1, 364 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), 365 SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback", 366 CS42L51_POWER_CTL1, 6, 1, 367 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD), 368 369 /* analog/mic */ 370 SND_SOC_DAPM_INPUT("AIN1L"), 371 SND_SOC_DAPM_INPUT("AIN1R"), 372 SND_SOC_DAPM_INPUT("AIN2L"), 373 SND_SOC_DAPM_INPUT("AIN2R"), 374 SND_SOC_DAPM_INPUT("MICL"), 375 SND_SOC_DAPM_INPUT("MICR"), 376 377 SND_SOC_DAPM_MIXER("Mic Preamp Left", 378 CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0), 379 SND_SOC_DAPM_MIXER("Mic Preamp Right", 380 CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0), 381 382 /* HP */ 383 SND_SOC_DAPM_OUTPUT("HPL"), 384 SND_SOC_DAPM_OUTPUT("HPR"), 385 386 /* mux */ 387 SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0, 388 &cs42l51_dac_mux_controls), 389 SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0, 390 &cs42l51_adcl_mux_controls), 391 SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0, 392 &cs42l51_adcr_mux_controls), 393 }; 394 395 static const struct snd_soc_dapm_route cs42l51_routes[] = { 396 {"HPL", NULL, "Left DAC"}, 397 {"HPR", NULL, "Right DAC"}, 398 399 {"Left ADC", NULL, "Left PGA"}, 400 {"Right ADC", NULL, "Right PGA"}, 401 402 {"Mic Preamp Left", NULL, "MICL"}, 403 {"Mic Preamp Right", NULL, "MICR"}, 404 405 {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" }, 406 {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" }, 407 {"PGA-ADC Mux Left", "MIC Left", "MICL" }, 408 {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" }, 409 {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" }, 410 {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" }, 411 {"PGA-ADC Mux Right", "MIC Right", "MICR" }, 412 {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" }, 413 414 {"Left PGA", NULL, "PGA-ADC Mux Left"}, 415 {"Right PGA", NULL, "PGA-ADC Mux Right"}, 416 }; 417 418 static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai, 419 unsigned int format) 420 { 421 struct snd_soc_codec *codec = codec_dai->codec; 422 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec); 423 int ret = 0; 424 425 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { 426 case SND_SOC_DAIFMT_I2S: 427 case SND_SOC_DAIFMT_LEFT_J: 428 case SND_SOC_DAIFMT_RIGHT_J: 429 cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK; 430 break; 431 default: 432 dev_err(codec->dev, "invalid DAI format\n"); 433 ret = -EINVAL; 434 } 435 436 switch (format & SND_SOC_DAIFMT_MASTER_MASK) { 437 case SND_SOC_DAIFMT_CBM_CFM: 438 cs42l51->func = MODE_MASTER; 439 break; 440 case SND_SOC_DAIFMT_CBS_CFS: 441 cs42l51->func = MODE_SLAVE_AUTO; 442 break; 443 default: 444 ret = -EINVAL; 445 break; 446 } 447 448 return ret; 449 } 450 451 struct cs42l51_ratios { 452 unsigned int ratio; 453 unsigned char speed_mode; 454 unsigned char mclk; 455 }; 456 457 static struct cs42l51_ratios slave_ratios[] = { 458 { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 }, 459 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 }, 460 { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 }, 461 { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 }, 462 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 }, 463 { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 }, 464 { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 }, 465 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 }, 466 { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 }, 467 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 }, 468 { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 }, 469 }; 470 471 static struct cs42l51_ratios slave_auto_ratios[] = { 472 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 }, 473 { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 }, 474 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 }, 475 { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 }, 476 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 }, 477 { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 }, 478 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 }, 479 { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 }, 480 }; 481 482 static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai, 483 int clk_id, unsigned int freq, int dir) 484 { 485 struct snd_soc_codec *codec = codec_dai->codec; 486 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec); 487 struct cs42l51_ratios *ratios = NULL; 488 int nr_ratios = 0; 489 unsigned int rates = 0; 490 unsigned int rate_min = -1; 491 unsigned int rate_max = 0; 492 int i; 493 494 cs42l51->mclk = freq; 495 496 switch (cs42l51->func) { 497 case MODE_MASTER: 498 return -EINVAL; 499 case MODE_SLAVE: 500 ratios = slave_ratios; 501 nr_ratios = ARRAY_SIZE(slave_ratios); 502 break; 503 case MODE_SLAVE_AUTO: 504 ratios = slave_auto_ratios; 505 nr_ratios = ARRAY_SIZE(slave_auto_ratios); 506 break; 507 } 508 509 for (i = 0; i < nr_ratios; i++) { 510 unsigned int rate = freq / ratios[i].ratio; 511 rates |= snd_pcm_rate_to_rate_bit(rate); 512 if (rate < rate_min) 513 rate_min = rate; 514 if (rate > rate_max) 515 rate_max = rate; 516 } 517 rates &= ~SNDRV_PCM_RATE_KNOT; 518 519 if (!rates) { 520 dev_err(codec->dev, "could not find a valid sample rate\n"); 521 return -EINVAL; 522 } 523 524 codec_dai->playback.rates = rates; 525 codec_dai->playback.rate_min = rate_min; 526 codec_dai->playback.rate_max = rate_max; 527 528 codec_dai->capture.rates = rates; 529 codec_dai->capture.rate_min = rate_min; 530 codec_dai->capture.rate_max = rate_max; 531 532 return 0; 533 } 534 535 static int cs42l51_hw_params(struct snd_pcm_substream *substream, 536 struct snd_pcm_hw_params *params, 537 struct snd_soc_dai *dai) 538 { 539 struct snd_soc_pcm_runtime *rtd = substream->private_data; 540 struct snd_soc_device *socdev = rtd->socdev; 541 struct snd_soc_codec *codec = socdev->card->codec; 542 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec); 543 int ret; 544 unsigned int i; 545 unsigned int rate; 546 unsigned int ratio; 547 struct cs42l51_ratios *ratios = NULL; 548 int nr_ratios = 0; 549 int intf_ctl, power_ctl, fmt; 550 551 switch (cs42l51->func) { 552 case MODE_MASTER: 553 return -EINVAL; 554 case MODE_SLAVE: 555 ratios = slave_ratios; 556 nr_ratios = ARRAY_SIZE(slave_ratios); 557 break; 558 case MODE_SLAVE_AUTO: 559 ratios = slave_auto_ratios; 560 nr_ratios = ARRAY_SIZE(slave_auto_ratios); 561 break; 562 } 563 564 /* Figure out which MCLK/LRCK ratio to use */ 565 rate = params_rate(params); /* Sampling rate, in Hz */ 566 ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */ 567 for (i = 0; i < nr_ratios; i++) { 568 if (ratios[i].ratio == ratio) 569 break; 570 } 571 572 if (i == nr_ratios) { 573 /* We did not find a matching ratio */ 574 dev_err(codec->dev, "could not find matching ratio\n"); 575 return -EINVAL; 576 } 577 578 intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL); 579 power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL); 580 581 intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S 582 | CS42L51_INTF_CTL_DAC_FORMAT(7)); 583 power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3) 584 | CS42L51_MIC_POWER_CTL_MCLK_DIV2); 585 586 switch (cs42l51->func) { 587 case MODE_MASTER: 588 intf_ctl |= CS42L51_INTF_CTL_MASTER; 589 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode); 590 break; 591 case MODE_SLAVE: 592 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode); 593 break; 594 case MODE_SLAVE_AUTO: 595 power_ctl |= CS42L51_MIC_POWER_CTL_AUTO; 596 break; 597 } 598 599 switch (cs42l51->audio_mode) { 600 case SND_SOC_DAIFMT_I2S: 601 intf_ctl |= CS42L51_INTF_CTL_ADC_I2S; 602 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S); 603 break; 604 case SND_SOC_DAIFMT_LEFT_J: 605 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24); 606 break; 607 case SND_SOC_DAIFMT_RIGHT_J: 608 switch (params_format(params)) { 609 case SNDRV_PCM_FORMAT_S16_LE: 610 case SNDRV_PCM_FORMAT_S16_BE: 611 fmt = CS42L51_DAC_DIF_RJ16; 612 break; 613 case SNDRV_PCM_FORMAT_S18_3LE: 614 case SNDRV_PCM_FORMAT_S18_3BE: 615 fmt = CS42L51_DAC_DIF_RJ18; 616 break; 617 case SNDRV_PCM_FORMAT_S20_3LE: 618 case SNDRV_PCM_FORMAT_S20_3BE: 619 fmt = CS42L51_DAC_DIF_RJ20; 620 break; 621 case SNDRV_PCM_FORMAT_S24_LE: 622 case SNDRV_PCM_FORMAT_S24_BE: 623 fmt = CS42L51_DAC_DIF_RJ24; 624 break; 625 default: 626 dev_err(codec->dev, "unknown format\n"); 627 return -EINVAL; 628 } 629 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt); 630 break; 631 default: 632 dev_err(codec->dev, "unknown format\n"); 633 return -EINVAL; 634 } 635 636 if (ratios[i].mclk) 637 power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2; 638 639 ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl); 640 if (ret < 0) 641 return ret; 642 643 ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl); 644 if (ret < 0) 645 return ret; 646 647 return 0; 648 } 649 650 static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute) 651 { 652 struct snd_soc_codec *codec = dai->codec; 653 int reg; 654 int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE; 655 656 reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL); 657 658 if (mute) 659 reg |= mask; 660 else 661 reg &= ~mask; 662 663 return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg); 664 } 665 666 static struct snd_soc_dai_ops cs42l51_dai_ops = { 667 .hw_params = cs42l51_hw_params, 668 .set_sysclk = cs42l51_set_dai_sysclk, 669 .set_fmt = cs42l51_set_dai_fmt, 670 .digital_mute = cs42l51_dai_mute, 671 }; 672 673 struct snd_soc_dai cs42l51_dai = { 674 .name = "CS42L51 HiFi", 675 .playback = { 676 .stream_name = "Playback", 677 .channels_min = 1, 678 .channels_max = 2, 679 .rates = SNDRV_PCM_RATE_8000_96000, 680 .formats = CS42L51_FORMATS, 681 }, 682 .capture = { 683 .stream_name = "Capture", 684 .channels_min = 1, 685 .channels_max = 2, 686 .rates = SNDRV_PCM_RATE_8000_96000, 687 .formats = CS42L51_FORMATS, 688 }, 689 .ops = &cs42l51_dai_ops, 690 }; 691 EXPORT_SYMBOL_GPL(cs42l51_dai); 692 693 694 static int cs42l51_probe(struct platform_device *pdev) 695 { 696 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 697 struct snd_soc_codec *codec; 698 int ret = 0; 699 700 if (!cs42l51_codec) { 701 dev_err(&pdev->dev, "CS42L51 codec not yet registered\n"); 702 return -EINVAL; 703 } 704 705 socdev->card->codec = cs42l51_codec; 706 codec = socdev->card->codec; 707 708 /* Register PCMs */ 709 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 710 if (ret < 0) { 711 dev_err(&pdev->dev, "failed to create PCMs\n"); 712 return ret; 713 } 714 715 snd_soc_add_controls(codec, cs42l51_snd_controls, 716 ARRAY_SIZE(cs42l51_snd_controls)); 717 snd_soc_dapm_new_controls(codec, cs42l51_dapm_widgets, 718 ARRAY_SIZE(cs42l51_dapm_widgets)); 719 snd_soc_dapm_add_routes(codec, cs42l51_routes, 720 ARRAY_SIZE(cs42l51_routes)); 721 722 return 0; 723 } 724 725 726 static int cs42l51_remove(struct platform_device *pdev) 727 { 728 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 729 730 snd_soc_free_pcms(socdev); 731 snd_soc_dapm_free(socdev); 732 733 return 0; 734 } 735 736 struct snd_soc_codec_device soc_codec_device_cs42l51 = { 737 .probe = cs42l51_probe, 738 .remove = cs42l51_remove 739 }; 740 EXPORT_SYMBOL_GPL(soc_codec_device_cs42l51); 741 742 static int __init cs42l51_init(void) 743 { 744 int ret; 745 746 ret = i2c_add_driver(&cs42l51_i2c_driver); 747 if (ret != 0) { 748 printk(KERN_ERR "%s: can't add i2c driver\n", __func__); 749 return ret; 750 } 751 return 0; 752 } 753 module_init(cs42l51_init); 754 755 static void __exit cs42l51_exit(void) 756 { 757 i2c_del_driver(&cs42l51_i2c_driver); 758 } 759 module_exit(cs42l51_exit); 760 761 MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>"); 762 MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver"); 763 MODULE_LICENSE("GPL"); 764