1 /* 2 * Cirrus Logic CS42448/CS42888 Audio CODEC Digital Audio Interface (DAI) driver 3 * 4 * Copyright (C) 2014 Freescale Semiconductor, Inc. 5 * 6 * Author: Nicolin Chen <Guangyu.Chen@freescale.com> 7 * 8 * This file is licensed under the terms of the GNU General Public License 9 * version 2. This program is licensed "as is" without any warranty of any 10 * kind, whether express or implied. 11 */ 12 13 #include <linux/clk.h> 14 #include <linux/delay.h> 15 #include <linux/module.h> 16 #include <linux/gpio/consumer.h> 17 #include <linux/pm_runtime.h> 18 #include <linux/regulator/consumer.h> 19 #include <sound/pcm_params.h> 20 #include <sound/soc.h> 21 #include <sound/tlv.h> 22 23 #include "cs42xx8.h" 24 25 #define CS42XX8_NUM_SUPPLIES 4 26 static const char *const cs42xx8_supply_names[CS42XX8_NUM_SUPPLIES] = { 27 "VA", 28 "VD", 29 "VLS", 30 "VLC", 31 }; 32 33 #define CS42XX8_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 34 SNDRV_PCM_FMTBIT_S20_3LE | \ 35 SNDRV_PCM_FMTBIT_S24_LE | \ 36 SNDRV_PCM_FMTBIT_S32_LE) 37 38 /* codec private data */ 39 struct cs42xx8_priv { 40 struct regulator_bulk_data supplies[CS42XX8_NUM_SUPPLIES]; 41 const struct cs42xx8_driver_data *drvdata; 42 struct regmap *regmap; 43 struct clk *clk; 44 45 bool slave_mode; 46 unsigned long sysclk; 47 u32 tx_channels; 48 struct gpio_desc *gpiod_reset; 49 u32 rate[2]; 50 }; 51 52 /* -127.5dB to 0dB with step of 0.5dB */ 53 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 54 /* -64dB to 24dB with step of 0.5dB */ 55 static const DECLARE_TLV_DB_SCALE(adc_tlv, -6400, 50, 0); 56 57 static const char *const cs42xx8_adc_single[] = { "Differential", "Single-Ended" }; 58 static const char *const cs42xx8_szc[] = { "Immediate Change", "Zero Cross", 59 "Soft Ramp", "Soft Ramp on Zero Cross" }; 60 61 static const struct soc_enum adc1_single_enum = 62 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 4, 2, cs42xx8_adc_single); 63 static const struct soc_enum adc2_single_enum = 64 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 3, 2, cs42xx8_adc_single); 65 static const struct soc_enum adc3_single_enum = 66 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 2, 2, cs42xx8_adc_single); 67 static const struct soc_enum dac_szc_enum = 68 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 5, 4, cs42xx8_szc); 69 static const struct soc_enum adc_szc_enum = 70 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 0, 4, cs42xx8_szc); 71 72 static const struct snd_kcontrol_new cs42xx8_snd_controls[] = { 73 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", CS42XX8_VOLAOUT1, 74 CS42XX8_VOLAOUT2, 0, 0xff, 1, dac_tlv), 75 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", CS42XX8_VOLAOUT3, 76 CS42XX8_VOLAOUT4, 0, 0xff, 1, dac_tlv), 77 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", CS42XX8_VOLAOUT5, 78 CS42XX8_VOLAOUT6, 0, 0xff, 1, dac_tlv), 79 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", CS42XX8_VOLAOUT7, 80 CS42XX8_VOLAOUT8, 0, 0xff, 1, dac_tlv), 81 SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", CS42XX8_VOLAIN1, 82 CS42XX8_VOLAIN2, 0, -0x80, 0x30, 7, 0, adc_tlv), 83 SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", CS42XX8_VOLAIN3, 84 CS42XX8_VOLAIN4, 0, -0x80, 0x30, 7, 0, adc_tlv), 85 SOC_DOUBLE("DAC1 Invert Switch", CS42XX8_DACINV, 0, 1, 1, 0), 86 SOC_DOUBLE("DAC2 Invert Switch", CS42XX8_DACINV, 2, 3, 1, 0), 87 SOC_DOUBLE("DAC3 Invert Switch", CS42XX8_DACINV, 4, 5, 1, 0), 88 SOC_DOUBLE("DAC4 Invert Switch", CS42XX8_DACINV, 6, 7, 1, 0), 89 SOC_DOUBLE("ADC1 Invert Switch", CS42XX8_ADCINV, 0, 1, 1, 0), 90 SOC_DOUBLE("ADC2 Invert Switch", CS42XX8_ADCINV, 2, 3, 1, 0), 91 SOC_SINGLE("ADC High-Pass Filter Switch", CS42XX8_ADCCTL, 7, 1, 1), 92 SOC_SINGLE("DAC De-emphasis Switch", CS42XX8_ADCCTL, 5, 1, 0), 93 SOC_ENUM("ADC1 Single Ended Mode Switch", adc1_single_enum), 94 SOC_ENUM("ADC2 Single Ended Mode Switch", adc2_single_enum), 95 SOC_SINGLE("DAC Single Volume Control Switch", CS42XX8_TXCTL, 7, 1, 0), 96 SOC_ENUM("DAC Soft Ramp & Zero Cross Control Switch", dac_szc_enum), 97 SOC_SINGLE("DAC Auto Mute Switch", CS42XX8_TXCTL, 4, 1, 0), 98 SOC_SINGLE("Mute ADC Serial Port Switch", CS42XX8_TXCTL, 3, 1, 0), 99 SOC_SINGLE("ADC Single Volume Control Switch", CS42XX8_TXCTL, 2, 1, 0), 100 SOC_ENUM("ADC Soft Ramp & Zero Cross Control Switch", adc_szc_enum), 101 }; 102 103 static const struct snd_kcontrol_new cs42xx8_adc3_snd_controls[] = { 104 SOC_DOUBLE_R_S_TLV("ADC3 Capture Volume", CS42XX8_VOLAIN5, 105 CS42XX8_VOLAIN6, 0, -0x80, 0x30, 7, 0, adc_tlv), 106 SOC_DOUBLE("ADC3 Invert Switch", CS42XX8_ADCINV, 4, 5, 1, 0), 107 SOC_ENUM("ADC3 Single Ended Mode Switch", adc3_single_enum), 108 }; 109 110 static const struct snd_soc_dapm_widget cs42xx8_dapm_widgets[] = { 111 SND_SOC_DAPM_DAC("DAC1", "Playback", CS42XX8_PWRCTL, 1, 1), 112 SND_SOC_DAPM_DAC("DAC2", "Playback", CS42XX8_PWRCTL, 2, 1), 113 SND_SOC_DAPM_DAC("DAC3", "Playback", CS42XX8_PWRCTL, 3, 1), 114 SND_SOC_DAPM_DAC("DAC4", "Playback", CS42XX8_PWRCTL, 4, 1), 115 116 SND_SOC_DAPM_OUTPUT("AOUT1L"), 117 SND_SOC_DAPM_OUTPUT("AOUT1R"), 118 SND_SOC_DAPM_OUTPUT("AOUT2L"), 119 SND_SOC_DAPM_OUTPUT("AOUT2R"), 120 SND_SOC_DAPM_OUTPUT("AOUT3L"), 121 SND_SOC_DAPM_OUTPUT("AOUT3R"), 122 SND_SOC_DAPM_OUTPUT("AOUT4L"), 123 SND_SOC_DAPM_OUTPUT("AOUT4R"), 124 125 SND_SOC_DAPM_ADC("ADC1", "Capture", CS42XX8_PWRCTL, 5, 1), 126 SND_SOC_DAPM_ADC("ADC2", "Capture", CS42XX8_PWRCTL, 6, 1), 127 128 SND_SOC_DAPM_INPUT("AIN1L"), 129 SND_SOC_DAPM_INPUT("AIN1R"), 130 SND_SOC_DAPM_INPUT("AIN2L"), 131 SND_SOC_DAPM_INPUT("AIN2R"), 132 133 SND_SOC_DAPM_SUPPLY("PWR", CS42XX8_PWRCTL, 0, 1, NULL, 0), 134 }; 135 136 static const struct snd_soc_dapm_widget cs42xx8_adc3_dapm_widgets[] = { 137 SND_SOC_DAPM_ADC("ADC3", "Capture", CS42XX8_PWRCTL, 7, 1), 138 139 SND_SOC_DAPM_INPUT("AIN3L"), 140 SND_SOC_DAPM_INPUT("AIN3R"), 141 }; 142 143 static const struct snd_soc_dapm_route cs42xx8_dapm_routes[] = { 144 /* Playback */ 145 { "AOUT1L", NULL, "DAC1" }, 146 { "AOUT1R", NULL, "DAC1" }, 147 { "DAC1", NULL, "PWR" }, 148 149 { "AOUT2L", NULL, "DAC2" }, 150 { "AOUT2R", NULL, "DAC2" }, 151 { "DAC2", NULL, "PWR" }, 152 153 { "AOUT3L", NULL, "DAC3" }, 154 { "AOUT3R", NULL, "DAC3" }, 155 { "DAC3", NULL, "PWR" }, 156 157 { "AOUT4L", NULL, "DAC4" }, 158 { "AOUT4R", NULL, "DAC4" }, 159 { "DAC4", NULL, "PWR" }, 160 161 /* Capture */ 162 { "ADC1", NULL, "AIN1L" }, 163 { "ADC1", NULL, "AIN1R" }, 164 { "ADC1", NULL, "PWR" }, 165 166 { "ADC2", NULL, "AIN2L" }, 167 { "ADC2", NULL, "AIN2R" }, 168 { "ADC2", NULL, "PWR" }, 169 }; 170 171 static const struct snd_soc_dapm_route cs42xx8_adc3_dapm_routes[] = { 172 /* Capture */ 173 { "ADC3", NULL, "AIN3L" }, 174 { "ADC3", NULL, "AIN3R" }, 175 { "ADC3", NULL, "PWR" }, 176 }; 177 178 struct cs42xx8_ratios { 179 unsigned int mfreq; 180 unsigned int min_mclk; 181 unsigned int max_mclk; 182 unsigned int ratio[3]; 183 }; 184 185 /* 186 * According to reference mannual, define the cs42xx8_ratio struct 187 * MFreq2 | MFreq1 | MFreq0 | Description | SSM | DSM | QSM | 188 * 0 | 0 | 0 |1.029MHz to 12.8MHz | 256 | 128 | 64 | 189 * 0 | 0 | 1 |1.536MHz to 19.2MHz | 384 | 192 | 96 | 190 * 0 | 1 | 0 |2.048MHz to 25.6MHz | 512 | 256 | 128 | 191 * 0 | 1 | 1 |3.072MHz to 38.4MHz | 768 | 384 | 192 | 192 * 1 | x | x |4.096MHz to 51.2MHz |1024 | 512 | 256 | 193 */ 194 static const struct cs42xx8_ratios cs42xx8_ratios[] = { 195 { 0, 1029000, 12800000, {256, 128, 64} }, 196 { 2, 1536000, 19200000, {384, 192, 96} }, 197 { 4, 2048000, 25600000, {512, 256, 128} }, 198 { 6, 3072000, 38400000, {768, 384, 192} }, 199 { 8, 4096000, 51200000, {1024, 512, 256} }, 200 }; 201 202 static int cs42xx8_set_dai_sysclk(struct snd_soc_dai *codec_dai, 203 int clk_id, unsigned int freq, int dir) 204 { 205 struct snd_soc_component *component = codec_dai->component; 206 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 207 208 cs42xx8->sysclk = freq; 209 210 return 0; 211 } 212 213 static int cs42xx8_set_dai_fmt(struct snd_soc_dai *codec_dai, 214 unsigned int format) 215 { 216 struct snd_soc_component *component = codec_dai->component; 217 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 218 u32 val; 219 220 /* Set DAI format */ 221 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { 222 case SND_SOC_DAIFMT_LEFT_J: 223 val = CS42XX8_INTF_DAC_DIF_LEFTJ | CS42XX8_INTF_ADC_DIF_LEFTJ; 224 break; 225 case SND_SOC_DAIFMT_I2S: 226 val = CS42XX8_INTF_DAC_DIF_I2S | CS42XX8_INTF_ADC_DIF_I2S; 227 break; 228 case SND_SOC_DAIFMT_RIGHT_J: 229 val = CS42XX8_INTF_DAC_DIF_RIGHTJ | CS42XX8_INTF_ADC_DIF_RIGHTJ; 230 break; 231 case SND_SOC_DAIFMT_DSP_A: 232 val = CS42XX8_INTF_DAC_DIF_TDM | CS42XX8_INTF_ADC_DIF_TDM; 233 break; 234 default: 235 dev_err(component->dev, "unsupported dai format\n"); 236 return -EINVAL; 237 } 238 239 regmap_update_bits(cs42xx8->regmap, CS42XX8_INTF, 240 CS42XX8_INTF_DAC_DIF_MASK | 241 CS42XX8_INTF_ADC_DIF_MASK, val); 242 243 /* Set master/slave audio interface */ 244 switch (format & SND_SOC_DAIFMT_MASTER_MASK) { 245 case SND_SOC_DAIFMT_CBS_CFS: 246 cs42xx8->slave_mode = true; 247 break; 248 case SND_SOC_DAIFMT_CBM_CFM: 249 cs42xx8->slave_mode = false; 250 break; 251 default: 252 dev_err(component->dev, "unsupported master/slave mode\n"); 253 return -EINVAL; 254 } 255 256 return 0; 257 } 258 259 static int cs42xx8_hw_params(struct snd_pcm_substream *substream, 260 struct snd_pcm_hw_params *params, 261 struct snd_soc_dai *dai) 262 { 263 struct snd_soc_component *component = dai->component; 264 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 265 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 266 u32 ratio[2]; 267 u32 rate[2]; 268 u32 fm[2]; 269 u32 i, val, mask; 270 bool condition1, condition2; 271 272 if (tx) 273 cs42xx8->tx_channels = params_channels(params); 274 275 rate[tx] = params_rate(params); 276 rate[!tx] = cs42xx8->rate[!tx]; 277 278 ratio[tx] = rate[tx] > 0 ? cs42xx8->sysclk / rate[tx] : 0; 279 ratio[!tx] = rate[!tx] > 0 ? cs42xx8->sysclk / rate[!tx] : 0; 280 281 /* Get functional mode for tx and rx according to rate */ 282 for (i = 0; i < 2; i++) { 283 if (cs42xx8->slave_mode) { 284 fm[i] = CS42XX8_FM_AUTO; 285 } else { 286 if (rate[i] < 50000) { 287 fm[i] = CS42XX8_FM_SINGLE; 288 } else if (rate[i] > 50000 && rate[i] < 100000) { 289 fm[i] = CS42XX8_FM_DOUBLE; 290 } else if (rate[i] > 100000 && rate[i] < 200000) { 291 fm[i] = CS42XX8_FM_QUAD; 292 } else { 293 dev_err(component->dev, 294 "unsupported sample rate\n"); 295 return -EINVAL; 296 } 297 } 298 } 299 300 for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) { 301 /* Is the ratio[tx] valid ? */ 302 condition1 = ((fm[tx] == CS42XX8_FM_AUTO) ? 303 (cs42xx8_ratios[i].ratio[0] == ratio[tx] || 304 cs42xx8_ratios[i].ratio[1] == ratio[tx] || 305 cs42xx8_ratios[i].ratio[2] == ratio[tx]) : 306 (cs42xx8_ratios[i].ratio[fm[tx]] == ratio[tx])) && 307 cs42xx8->sysclk >= cs42xx8_ratios[i].min_mclk && 308 cs42xx8->sysclk <= cs42xx8_ratios[i].max_mclk; 309 310 if (!ratio[tx]) 311 condition1 = true; 312 313 /* Is the ratio[!tx] valid ? */ 314 condition2 = ((fm[!tx] == CS42XX8_FM_AUTO) ? 315 (cs42xx8_ratios[i].ratio[0] == ratio[!tx] || 316 cs42xx8_ratios[i].ratio[1] == ratio[!tx] || 317 cs42xx8_ratios[i].ratio[2] == ratio[!tx]) : 318 (cs42xx8_ratios[i].ratio[fm[!tx]] == ratio[!tx])); 319 320 if (!ratio[!tx]) 321 condition2 = true; 322 323 /* 324 * Both ratio[tx] and ratio[!tx] is valid, then we get 325 * a proper MFreq. 326 */ 327 if (condition1 && condition2) 328 break; 329 } 330 331 if (i == ARRAY_SIZE(cs42xx8_ratios)) { 332 dev_err(component->dev, "unsupported sysclk ratio\n"); 333 return -EINVAL; 334 } 335 336 cs42xx8->rate[tx] = params_rate(params); 337 338 mask = CS42XX8_FUNCMOD_MFREQ_MASK; 339 val = cs42xx8_ratios[i].mfreq; 340 341 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD, 342 CS42XX8_FUNCMOD_xC_FM_MASK(tx) | mask, 343 CS42XX8_FUNCMOD_xC_FM(tx, fm[tx]) | val); 344 345 return 0; 346 } 347 348 static int cs42xx8_hw_free(struct snd_pcm_substream *substream, 349 struct snd_soc_dai *dai) 350 { 351 struct snd_soc_component *component = dai->component; 352 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 353 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 354 355 /* Clear stored rate */ 356 cs42xx8->rate[tx] = 0; 357 358 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD, 359 CS42XX8_FUNCMOD_xC_FM_MASK(tx), 360 CS42XX8_FUNCMOD_xC_FM(tx, CS42XX8_FM_AUTO)); 361 return 0; 362 } 363 364 static int cs42xx8_mute(struct snd_soc_dai *dai, int mute, int direction) 365 { 366 struct snd_soc_component *component = dai->component; 367 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 368 u8 dac_unmute = cs42xx8->tx_channels ? 369 ~((0x1 << cs42xx8->tx_channels) - 1) : 0; 370 371 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, 372 mute ? CS42XX8_DACMUTE_ALL : dac_unmute); 373 374 return 0; 375 } 376 377 static const struct snd_soc_dai_ops cs42xx8_dai_ops = { 378 .set_fmt = cs42xx8_set_dai_fmt, 379 .set_sysclk = cs42xx8_set_dai_sysclk, 380 .hw_params = cs42xx8_hw_params, 381 .hw_free = cs42xx8_hw_free, 382 .mute_stream = cs42xx8_mute, 383 .no_capture_mute = 1, 384 }; 385 386 static struct snd_soc_dai_driver cs42xx8_dai = { 387 .playback = { 388 .stream_name = "Playback", 389 .channels_min = 1, 390 .channels_max = 8, 391 .rates = SNDRV_PCM_RATE_8000_192000, 392 .formats = CS42XX8_FORMATS, 393 }, 394 .capture = { 395 .stream_name = "Capture", 396 .channels_min = 1, 397 .rates = SNDRV_PCM_RATE_8000_192000, 398 .formats = CS42XX8_FORMATS, 399 }, 400 .ops = &cs42xx8_dai_ops, 401 }; 402 403 static const struct reg_default cs42xx8_reg[] = { 404 { 0x02, 0x00 }, /* Power Control */ 405 { 0x03, 0xF0 }, /* Functional Mode */ 406 { 0x04, 0x46 }, /* Interface Formats */ 407 { 0x05, 0x00 }, /* ADC Control & DAC De-Emphasis */ 408 { 0x06, 0x10 }, /* Transition Control */ 409 { 0x07, 0x00 }, /* DAC Channel Mute */ 410 { 0x08, 0x00 }, /* Volume Control AOUT1 */ 411 { 0x09, 0x00 }, /* Volume Control AOUT2 */ 412 { 0x0a, 0x00 }, /* Volume Control AOUT3 */ 413 { 0x0b, 0x00 }, /* Volume Control AOUT4 */ 414 { 0x0c, 0x00 }, /* Volume Control AOUT5 */ 415 { 0x0d, 0x00 }, /* Volume Control AOUT6 */ 416 { 0x0e, 0x00 }, /* Volume Control AOUT7 */ 417 { 0x0f, 0x00 }, /* Volume Control AOUT8 */ 418 { 0x10, 0x00 }, /* DAC Channel Invert */ 419 { 0x11, 0x00 }, /* Volume Control AIN1 */ 420 { 0x12, 0x00 }, /* Volume Control AIN2 */ 421 { 0x13, 0x00 }, /* Volume Control AIN3 */ 422 { 0x14, 0x00 }, /* Volume Control AIN4 */ 423 { 0x15, 0x00 }, /* Volume Control AIN5 */ 424 { 0x16, 0x00 }, /* Volume Control AIN6 */ 425 { 0x17, 0x00 }, /* ADC Channel Invert */ 426 { 0x18, 0x00 }, /* Status Control */ 427 { 0x1a, 0x00 }, /* Status Mask */ 428 { 0x1b, 0x00 }, /* MUTEC Pin Control */ 429 }; 430 431 static bool cs42xx8_volatile_register(struct device *dev, unsigned int reg) 432 { 433 switch (reg) { 434 case CS42XX8_STATUS: 435 return true; 436 default: 437 return false; 438 } 439 } 440 441 static bool cs42xx8_writeable_register(struct device *dev, unsigned int reg) 442 { 443 switch (reg) { 444 case CS42XX8_CHIPID: 445 case CS42XX8_STATUS: 446 return false; 447 default: 448 return true; 449 } 450 } 451 452 const struct regmap_config cs42xx8_regmap_config = { 453 .reg_bits = 8, 454 .val_bits = 8, 455 456 .max_register = CS42XX8_LASTREG, 457 .reg_defaults = cs42xx8_reg, 458 .num_reg_defaults = ARRAY_SIZE(cs42xx8_reg), 459 .volatile_reg = cs42xx8_volatile_register, 460 .writeable_reg = cs42xx8_writeable_register, 461 .cache_type = REGCACHE_RBTREE, 462 }; 463 EXPORT_SYMBOL_GPL(cs42xx8_regmap_config); 464 465 static int cs42xx8_component_probe(struct snd_soc_component *component) 466 { 467 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 468 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 469 470 switch (cs42xx8->drvdata->num_adcs) { 471 case 3: 472 snd_soc_add_component_controls(component, cs42xx8_adc3_snd_controls, 473 ARRAY_SIZE(cs42xx8_adc3_snd_controls)); 474 snd_soc_dapm_new_controls(dapm, cs42xx8_adc3_dapm_widgets, 475 ARRAY_SIZE(cs42xx8_adc3_dapm_widgets)); 476 snd_soc_dapm_add_routes(dapm, cs42xx8_adc3_dapm_routes, 477 ARRAY_SIZE(cs42xx8_adc3_dapm_routes)); 478 break; 479 default: 480 break; 481 } 482 483 /* Mute all DAC channels */ 484 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, CS42XX8_DACMUTE_ALL); 485 486 return 0; 487 } 488 489 static const struct snd_soc_component_driver cs42xx8_driver = { 490 .probe = cs42xx8_component_probe, 491 .controls = cs42xx8_snd_controls, 492 .num_controls = ARRAY_SIZE(cs42xx8_snd_controls), 493 .dapm_widgets = cs42xx8_dapm_widgets, 494 .num_dapm_widgets = ARRAY_SIZE(cs42xx8_dapm_widgets), 495 .dapm_routes = cs42xx8_dapm_routes, 496 .num_dapm_routes = ARRAY_SIZE(cs42xx8_dapm_routes), 497 .use_pmdown_time = 1, 498 .endianness = 1, 499 }; 500 501 const struct cs42xx8_driver_data cs42448_data = { 502 .name = "cs42448", 503 .num_adcs = 3, 504 }; 505 EXPORT_SYMBOL_GPL(cs42448_data); 506 507 const struct cs42xx8_driver_data cs42888_data = { 508 .name = "cs42888", 509 .num_adcs = 2, 510 }; 511 EXPORT_SYMBOL_GPL(cs42888_data); 512 513 int cs42xx8_probe(struct device *dev, struct regmap *regmap, struct cs42xx8_driver_data *drvdata) 514 { 515 struct cs42xx8_priv *cs42xx8; 516 int ret, val, i; 517 518 if (IS_ERR(regmap)) { 519 ret = PTR_ERR(regmap); 520 dev_err(dev, "failed to allocate regmap: %d\n", ret); 521 return ret; 522 } 523 524 cs42xx8 = devm_kzalloc(dev, sizeof(*cs42xx8), GFP_KERNEL); 525 if (cs42xx8 == NULL) 526 return -ENOMEM; 527 528 dev_set_drvdata(dev, cs42xx8); 529 530 cs42xx8->regmap = regmap; 531 532 cs42xx8->drvdata = drvdata; 533 534 cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset", 535 GPIOD_OUT_HIGH); 536 if (IS_ERR(cs42xx8->gpiod_reset)) 537 return PTR_ERR(cs42xx8->gpiod_reset); 538 539 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0); 540 541 cs42xx8->clk = devm_clk_get(dev, "mclk"); 542 if (IS_ERR(cs42xx8->clk)) { 543 dev_err(dev, "failed to get the clock: %ld\n", 544 PTR_ERR(cs42xx8->clk)); 545 return -EINVAL; 546 } 547 548 cs42xx8->sysclk = clk_get_rate(cs42xx8->clk); 549 550 for (i = 0; i < ARRAY_SIZE(cs42xx8->supplies); i++) 551 cs42xx8->supplies[i].supply = cs42xx8_supply_names[i]; 552 553 ret = devm_regulator_bulk_get(dev, 554 ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies); 555 if (ret) { 556 dev_err(dev, "failed to request supplies: %d\n", ret); 557 return ret; 558 } 559 560 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies), 561 cs42xx8->supplies); 562 if (ret) { 563 dev_err(dev, "failed to enable supplies: %d\n", ret); 564 return ret; 565 } 566 567 /* Make sure hardware reset done */ 568 msleep(5); 569 570 /* Validate the chip ID */ 571 ret = regmap_read(cs42xx8->regmap, CS42XX8_CHIPID, &val); 572 if (ret < 0) { 573 dev_err(dev, "failed to get device ID, ret = %d", ret); 574 goto err_enable; 575 } 576 577 /* The top four bits of the chip ID should be 0000 */ 578 if (((val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4) != 0x00) { 579 dev_err(dev, "unmatched chip ID: %d\n", 580 (val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4); 581 ret = -EINVAL; 582 goto err_enable; 583 } 584 585 dev_info(dev, "found device, revision %X\n", 586 val & CS42XX8_CHIPID_REV_ID_MASK); 587 588 cs42xx8_dai.name = cs42xx8->drvdata->name; 589 590 /* Each adc supports stereo input */ 591 cs42xx8_dai.capture.channels_max = cs42xx8->drvdata->num_adcs * 2; 592 593 ret = devm_snd_soc_register_component(dev, &cs42xx8_driver, &cs42xx8_dai, 1); 594 if (ret) { 595 dev_err(dev, "failed to register component:%d\n", ret); 596 goto err_enable; 597 } 598 599 regcache_cache_only(cs42xx8->regmap, true); 600 601 err_enable: 602 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), 603 cs42xx8->supplies); 604 605 return ret; 606 } 607 EXPORT_SYMBOL_GPL(cs42xx8_probe); 608 609 #ifdef CONFIG_PM 610 static int cs42xx8_runtime_resume(struct device *dev) 611 { 612 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev); 613 int ret; 614 615 ret = clk_prepare_enable(cs42xx8->clk); 616 if (ret) { 617 dev_err(dev, "failed to enable mclk: %d\n", ret); 618 return ret; 619 } 620 621 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0); 622 623 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies), 624 cs42xx8->supplies); 625 if (ret) { 626 dev_err(dev, "failed to enable supplies: %d\n", ret); 627 goto err_clk; 628 } 629 630 /* Make sure hardware reset done */ 631 msleep(5); 632 633 regcache_cache_only(cs42xx8->regmap, false); 634 regcache_mark_dirty(cs42xx8->regmap); 635 636 ret = regcache_sync(cs42xx8->regmap); 637 if (ret) { 638 dev_err(dev, "failed to sync regmap: %d\n", ret); 639 goto err_bulk; 640 } 641 642 return 0; 643 644 err_bulk: 645 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), 646 cs42xx8->supplies); 647 err_clk: 648 clk_disable_unprepare(cs42xx8->clk); 649 650 return ret; 651 } 652 653 static int cs42xx8_runtime_suspend(struct device *dev) 654 { 655 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev); 656 657 regcache_cache_only(cs42xx8->regmap, true); 658 659 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), 660 cs42xx8->supplies); 661 662 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 1); 663 664 clk_disable_unprepare(cs42xx8->clk); 665 666 return 0; 667 } 668 #endif 669 670 const struct dev_pm_ops cs42xx8_pm = { 671 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 672 pm_runtime_force_resume) 673 SET_RUNTIME_PM_OPS(cs42xx8_runtime_suspend, cs42xx8_runtime_resume, NULL) 674 }; 675 EXPORT_SYMBOL_GPL(cs42xx8_pm); 676 677 MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec Driver"); 678 MODULE_AUTHOR("Freescale Semiconductor, Inc."); 679 MODULE_LICENSE("GPL"); 680