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/of_device.h> 17 #include <linux/gpio/consumer.h> 18 #include <linux/pm_runtime.h> 19 #include <linux/regulator/consumer.h> 20 #include <sound/pcm_params.h> 21 #include <sound/soc.h> 22 #include <sound/tlv.h> 23 24 #include "cs42xx8.h" 25 26 #define CS42XX8_NUM_SUPPLIES 4 27 static const char *const cs42xx8_supply_names[CS42XX8_NUM_SUPPLIES] = { 28 "VA", 29 "VD", 30 "VLS", 31 "VLC", 32 }; 33 34 #define CS42XX8_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 35 SNDRV_PCM_FMTBIT_S20_3LE | \ 36 SNDRV_PCM_FMTBIT_S24_LE | \ 37 SNDRV_PCM_FMTBIT_S32_LE) 38 39 /* codec private data */ 40 struct cs42xx8_priv { 41 struct regulator_bulk_data supplies[CS42XX8_NUM_SUPPLIES]; 42 const struct cs42xx8_driver_data *drvdata; 43 struct regmap *regmap; 44 struct clk *clk; 45 46 bool slave_mode; 47 unsigned long sysclk; 48 u32 tx_channels; 49 struct gpio_desc *gpiod_reset; 50 u32 rate[2]; 51 }; 52 53 /* -127.5dB to 0dB with step of 0.5dB */ 54 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 55 /* -64dB to 24dB with step of 0.5dB */ 56 static const DECLARE_TLV_DB_SCALE(adc_tlv, -6400, 50, 0); 57 58 static const char *const cs42xx8_adc_single[] = { "Differential", "Single-Ended" }; 59 static const char *const cs42xx8_szc[] = { "Immediate Change", "Zero Cross", 60 "Soft Ramp", "Soft Ramp on Zero Cross" }; 61 62 static const struct soc_enum adc1_single_enum = 63 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 4, 2, cs42xx8_adc_single); 64 static const struct soc_enum adc2_single_enum = 65 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 3, 2, cs42xx8_adc_single); 66 static const struct soc_enum adc3_single_enum = 67 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 2, 2, cs42xx8_adc_single); 68 static const struct soc_enum dac_szc_enum = 69 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 5, 4, cs42xx8_szc); 70 static const struct soc_enum adc_szc_enum = 71 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 0, 4, cs42xx8_szc); 72 73 static const struct snd_kcontrol_new cs42xx8_snd_controls[] = { 74 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", CS42XX8_VOLAOUT1, 75 CS42XX8_VOLAOUT2, 0, 0xff, 1, dac_tlv), 76 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", CS42XX8_VOLAOUT3, 77 CS42XX8_VOLAOUT4, 0, 0xff, 1, dac_tlv), 78 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", CS42XX8_VOLAOUT5, 79 CS42XX8_VOLAOUT6, 0, 0xff, 1, dac_tlv), 80 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", CS42XX8_VOLAOUT7, 81 CS42XX8_VOLAOUT8, 0, 0xff, 1, dac_tlv), 82 SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", CS42XX8_VOLAIN1, 83 CS42XX8_VOLAIN2, 0, -0x80, 0x30, 7, 0, adc_tlv), 84 SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", CS42XX8_VOLAIN3, 85 CS42XX8_VOLAIN4, 0, -0x80, 0x30, 7, 0, adc_tlv), 86 SOC_DOUBLE("DAC1 Invert Switch", CS42XX8_DACINV, 0, 1, 1, 0), 87 SOC_DOUBLE("DAC2 Invert Switch", CS42XX8_DACINV, 2, 3, 1, 0), 88 SOC_DOUBLE("DAC3 Invert Switch", CS42XX8_DACINV, 4, 5, 1, 0), 89 SOC_DOUBLE("DAC4 Invert Switch", CS42XX8_DACINV, 6, 7, 1, 0), 90 SOC_DOUBLE("ADC1 Invert Switch", CS42XX8_ADCINV, 0, 1, 1, 0), 91 SOC_DOUBLE("ADC2 Invert Switch", CS42XX8_ADCINV, 2, 3, 1, 0), 92 SOC_SINGLE("ADC High-Pass Filter Switch", CS42XX8_ADCCTL, 7, 1, 1), 93 SOC_SINGLE("DAC De-emphasis Switch", CS42XX8_ADCCTL, 5, 1, 0), 94 SOC_ENUM("ADC1 Single Ended Mode Switch", adc1_single_enum), 95 SOC_ENUM("ADC2 Single Ended Mode Switch", adc2_single_enum), 96 SOC_SINGLE("DAC Single Volume Control Switch", CS42XX8_TXCTL, 7, 1, 0), 97 SOC_ENUM("DAC Soft Ramp & Zero Cross Control Switch", dac_szc_enum), 98 SOC_SINGLE("DAC Auto Mute Switch", CS42XX8_TXCTL, 4, 1, 0), 99 SOC_SINGLE("Mute ADC Serial Port Switch", CS42XX8_TXCTL, 3, 1, 0), 100 SOC_SINGLE("ADC Single Volume Control Switch", CS42XX8_TXCTL, 2, 1, 0), 101 SOC_ENUM("ADC Soft Ramp & Zero Cross Control Switch", adc_szc_enum), 102 }; 103 104 static const struct snd_kcontrol_new cs42xx8_adc3_snd_controls[] = { 105 SOC_DOUBLE_R_S_TLV("ADC3 Capture Volume", CS42XX8_VOLAIN5, 106 CS42XX8_VOLAIN6, 0, -0x80, 0x30, 7, 0, adc_tlv), 107 SOC_DOUBLE("ADC3 Invert Switch", CS42XX8_ADCINV, 4, 5, 1, 0), 108 SOC_ENUM("ADC3 Single Ended Mode Switch", adc3_single_enum), 109 }; 110 111 static const struct snd_soc_dapm_widget cs42xx8_dapm_widgets[] = { 112 SND_SOC_DAPM_DAC("DAC1", "Playback", CS42XX8_PWRCTL, 1, 1), 113 SND_SOC_DAPM_DAC("DAC2", "Playback", CS42XX8_PWRCTL, 2, 1), 114 SND_SOC_DAPM_DAC("DAC3", "Playback", CS42XX8_PWRCTL, 3, 1), 115 SND_SOC_DAPM_DAC("DAC4", "Playback", CS42XX8_PWRCTL, 4, 1), 116 117 SND_SOC_DAPM_OUTPUT("AOUT1L"), 118 SND_SOC_DAPM_OUTPUT("AOUT1R"), 119 SND_SOC_DAPM_OUTPUT("AOUT2L"), 120 SND_SOC_DAPM_OUTPUT("AOUT2R"), 121 SND_SOC_DAPM_OUTPUT("AOUT3L"), 122 SND_SOC_DAPM_OUTPUT("AOUT3R"), 123 SND_SOC_DAPM_OUTPUT("AOUT4L"), 124 SND_SOC_DAPM_OUTPUT("AOUT4R"), 125 126 SND_SOC_DAPM_ADC("ADC1", "Capture", CS42XX8_PWRCTL, 5, 1), 127 SND_SOC_DAPM_ADC("ADC2", "Capture", CS42XX8_PWRCTL, 6, 1), 128 129 SND_SOC_DAPM_INPUT("AIN1L"), 130 SND_SOC_DAPM_INPUT("AIN1R"), 131 SND_SOC_DAPM_INPUT("AIN2L"), 132 SND_SOC_DAPM_INPUT("AIN2R"), 133 134 SND_SOC_DAPM_SUPPLY("PWR", CS42XX8_PWRCTL, 0, 1, NULL, 0), 135 }; 136 137 static const struct snd_soc_dapm_widget cs42xx8_adc3_dapm_widgets[] = { 138 SND_SOC_DAPM_ADC("ADC3", "Capture", CS42XX8_PWRCTL, 7, 1), 139 140 SND_SOC_DAPM_INPUT("AIN3L"), 141 SND_SOC_DAPM_INPUT("AIN3R"), 142 }; 143 144 static const struct snd_soc_dapm_route cs42xx8_dapm_routes[] = { 145 /* Playback */ 146 { "AOUT1L", NULL, "DAC1" }, 147 { "AOUT1R", NULL, "DAC1" }, 148 { "DAC1", NULL, "PWR" }, 149 150 { "AOUT2L", NULL, "DAC2" }, 151 { "AOUT2R", NULL, "DAC2" }, 152 { "DAC2", NULL, "PWR" }, 153 154 { "AOUT3L", NULL, "DAC3" }, 155 { "AOUT3R", NULL, "DAC3" }, 156 { "DAC3", NULL, "PWR" }, 157 158 { "AOUT4L", NULL, "DAC4" }, 159 { "AOUT4R", NULL, "DAC4" }, 160 { "DAC4", NULL, "PWR" }, 161 162 /* Capture */ 163 { "ADC1", NULL, "AIN1L" }, 164 { "ADC1", NULL, "AIN1R" }, 165 { "ADC1", NULL, "PWR" }, 166 167 { "ADC2", NULL, "AIN2L" }, 168 { "ADC2", NULL, "AIN2R" }, 169 { "ADC2", NULL, "PWR" }, 170 }; 171 172 static const struct snd_soc_dapm_route cs42xx8_adc3_dapm_routes[] = { 173 /* Capture */ 174 { "ADC3", NULL, "AIN3L" }, 175 { "ADC3", NULL, "AIN3R" }, 176 { "ADC3", NULL, "PWR" }, 177 }; 178 179 struct cs42xx8_ratios { 180 unsigned int mfreq; 181 unsigned int min_mclk; 182 unsigned int max_mclk; 183 unsigned int ratio[3]; 184 }; 185 186 /* 187 * According to reference mannual, define the cs42xx8_ratio struct 188 * MFreq2 | MFreq1 | MFreq0 | Description | SSM | DSM | QSM | 189 * 0 | 0 | 0 |1.029MHz to 12.8MHz | 256 | 128 | 64 | 190 * 0 | 0 | 1 |1.536MHz to 19.2MHz | 384 | 192 | 96 | 191 * 0 | 1 | 0 |2.048MHz to 25.6MHz | 512 | 256 | 128 | 192 * 0 | 1 | 1 |3.072MHz to 38.4MHz | 768 | 384 | 192 | 193 * 1 | x | x |4.096MHz to 51.2MHz |1024 | 512 | 256 | 194 */ 195 static const struct cs42xx8_ratios cs42xx8_ratios[] = { 196 { 0, 1029000, 12800000, {256, 128, 64} }, 197 { 2, 1536000, 19200000, {384, 192, 96} }, 198 { 4, 2048000, 25600000, {512, 256, 128} }, 199 { 6, 3072000, 38400000, {768, 384, 192} }, 200 { 8, 4096000, 51200000, {1024, 512, 256} }, 201 }; 202 203 static int cs42xx8_set_dai_sysclk(struct snd_soc_dai *codec_dai, 204 int clk_id, unsigned int freq, int dir) 205 { 206 struct snd_soc_component *component = codec_dai->component; 207 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 208 209 cs42xx8->sysclk = freq; 210 211 return 0; 212 } 213 214 static int cs42xx8_set_dai_fmt(struct snd_soc_dai *codec_dai, 215 unsigned int format) 216 { 217 struct snd_soc_component *component = codec_dai->component; 218 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 219 u32 val; 220 221 /* Set DAI format */ 222 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { 223 case SND_SOC_DAIFMT_LEFT_J: 224 val = CS42XX8_INTF_DAC_DIF_LEFTJ | CS42XX8_INTF_ADC_DIF_LEFTJ; 225 break; 226 case SND_SOC_DAIFMT_I2S: 227 val = CS42XX8_INTF_DAC_DIF_I2S | CS42XX8_INTF_ADC_DIF_I2S; 228 break; 229 case SND_SOC_DAIFMT_RIGHT_J: 230 val = CS42XX8_INTF_DAC_DIF_RIGHTJ | CS42XX8_INTF_ADC_DIF_RIGHTJ; 231 break; 232 case SND_SOC_DAIFMT_DSP_A: 233 val = CS42XX8_INTF_DAC_DIF_TDM | CS42XX8_INTF_ADC_DIF_TDM; 234 break; 235 default: 236 dev_err(component->dev, "unsupported dai format\n"); 237 return -EINVAL; 238 } 239 240 regmap_update_bits(cs42xx8->regmap, CS42XX8_INTF, 241 CS42XX8_INTF_DAC_DIF_MASK | 242 CS42XX8_INTF_ADC_DIF_MASK, val); 243 244 /* Set master/slave audio interface */ 245 switch (format & SND_SOC_DAIFMT_MASTER_MASK) { 246 case SND_SOC_DAIFMT_CBS_CFS: 247 cs42xx8->slave_mode = true; 248 break; 249 case SND_SOC_DAIFMT_CBM_CFM: 250 cs42xx8->slave_mode = false; 251 break; 252 default: 253 dev_err(component->dev, "unsupported master/slave mode\n"); 254 return -EINVAL; 255 } 256 257 return 0; 258 } 259 260 static int cs42xx8_hw_params(struct snd_pcm_substream *substream, 261 struct snd_pcm_hw_params *params, 262 struct snd_soc_dai *dai) 263 { 264 struct snd_soc_component *component = dai->component; 265 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 266 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 267 u32 ratio[2]; 268 u32 rate[2]; 269 u32 fm[2]; 270 u32 i, val, mask; 271 bool condition1, condition2; 272 273 if (tx) 274 cs42xx8->tx_channels = params_channels(params); 275 276 rate[tx] = params_rate(params); 277 rate[!tx] = cs42xx8->rate[!tx]; 278 279 ratio[tx] = rate[tx] > 0 ? cs42xx8->sysclk / rate[tx] : 0; 280 ratio[!tx] = rate[!tx] > 0 ? cs42xx8->sysclk / rate[!tx] : 0; 281 282 /* Get functional mode for tx and rx according to rate */ 283 for (i = 0; i < 2; i++) { 284 if (cs42xx8->slave_mode) { 285 fm[i] = CS42XX8_FM_AUTO; 286 } else { 287 if (rate[i] < 50000) { 288 fm[i] = CS42XX8_FM_SINGLE; 289 } else if (rate[i] > 50000 && rate[i] < 100000) { 290 fm[i] = CS42XX8_FM_DOUBLE; 291 } else if (rate[i] > 100000 && rate[i] < 200000) { 292 fm[i] = CS42XX8_FM_QUAD; 293 } else { 294 dev_err(component->dev, 295 "unsupported sample rate\n"); 296 return -EINVAL; 297 } 298 } 299 } 300 301 for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) { 302 /* Is the ratio[tx] valid ? */ 303 condition1 = ((fm[tx] == CS42XX8_FM_AUTO) ? 304 (cs42xx8_ratios[i].ratio[0] == ratio[tx] || 305 cs42xx8_ratios[i].ratio[1] == ratio[tx] || 306 cs42xx8_ratios[i].ratio[2] == ratio[tx]) : 307 (cs42xx8_ratios[i].ratio[fm[tx]] == ratio[tx])) && 308 cs42xx8->sysclk >= cs42xx8_ratios[i].min_mclk && 309 cs42xx8->sysclk <= cs42xx8_ratios[i].max_mclk; 310 311 if (!ratio[tx]) 312 condition1 = true; 313 314 /* Is the ratio[!tx] valid ? */ 315 condition2 = ((fm[!tx] == CS42XX8_FM_AUTO) ? 316 (cs42xx8_ratios[i].ratio[0] == ratio[!tx] || 317 cs42xx8_ratios[i].ratio[1] == ratio[!tx] || 318 cs42xx8_ratios[i].ratio[2] == ratio[!tx]) : 319 (cs42xx8_ratios[i].ratio[fm[!tx]] == ratio[!tx])); 320 321 if (!ratio[!tx]) 322 condition2 = true; 323 324 /* 325 * Both ratio[tx] and ratio[!tx] is valid, then we get 326 * a proper MFreq. 327 */ 328 if (condition1 && condition2) 329 break; 330 } 331 332 if (i == ARRAY_SIZE(cs42xx8_ratios)) { 333 dev_err(component->dev, "unsupported sysclk ratio\n"); 334 return -EINVAL; 335 } 336 337 cs42xx8->rate[tx] = params_rate(params); 338 339 mask = CS42XX8_FUNCMOD_MFREQ_MASK; 340 val = cs42xx8_ratios[i].mfreq; 341 342 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD, 343 CS42XX8_FUNCMOD_xC_FM_MASK(tx) | mask, 344 CS42XX8_FUNCMOD_xC_FM(tx, fm[tx]) | val); 345 346 return 0; 347 } 348 349 static int cs42xx8_hw_free(struct snd_pcm_substream *substream, 350 struct snd_soc_dai *dai) 351 { 352 struct snd_soc_component *component = dai->component; 353 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 354 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 355 356 /* Clear stored rate */ 357 cs42xx8->rate[tx] = 0; 358 359 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD, 360 CS42XX8_FUNCMOD_xC_FM_MASK(tx), 361 CS42XX8_FUNCMOD_xC_FM(tx, CS42XX8_FM_AUTO)); 362 return 0; 363 } 364 365 static int cs42xx8_mute(struct snd_soc_dai *dai, int mute, int direction) 366 { 367 struct snd_soc_component *component = dai->component; 368 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 369 u8 dac_unmute = cs42xx8->tx_channels ? 370 ~((0x1 << cs42xx8->tx_channels) - 1) : 0; 371 372 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, 373 mute ? CS42XX8_DACMUTE_ALL : dac_unmute); 374 375 return 0; 376 } 377 378 static const struct snd_soc_dai_ops cs42xx8_dai_ops = { 379 .set_fmt = cs42xx8_set_dai_fmt, 380 .set_sysclk = cs42xx8_set_dai_sysclk, 381 .hw_params = cs42xx8_hw_params, 382 .hw_free = cs42xx8_hw_free, 383 .mute_stream = cs42xx8_mute, 384 .no_capture_mute = 1, 385 }; 386 387 static struct snd_soc_dai_driver cs42xx8_dai = { 388 .playback = { 389 .stream_name = "Playback", 390 .channels_min = 1, 391 .channels_max = 8, 392 .rates = SNDRV_PCM_RATE_8000_192000, 393 .formats = CS42XX8_FORMATS, 394 }, 395 .capture = { 396 .stream_name = "Capture", 397 .channels_min = 1, 398 .rates = SNDRV_PCM_RATE_8000_192000, 399 .formats = CS42XX8_FORMATS, 400 }, 401 .ops = &cs42xx8_dai_ops, 402 }; 403 404 static const struct reg_default cs42xx8_reg[] = { 405 { 0x02, 0x00 }, /* Power Control */ 406 { 0x03, 0xF0 }, /* Functional Mode */ 407 { 0x04, 0x46 }, /* Interface Formats */ 408 { 0x05, 0x00 }, /* ADC Control & DAC De-Emphasis */ 409 { 0x06, 0x10 }, /* Transition Control */ 410 { 0x07, 0x00 }, /* DAC Channel Mute */ 411 { 0x08, 0x00 }, /* Volume Control AOUT1 */ 412 { 0x09, 0x00 }, /* Volume Control AOUT2 */ 413 { 0x0a, 0x00 }, /* Volume Control AOUT3 */ 414 { 0x0b, 0x00 }, /* Volume Control AOUT4 */ 415 { 0x0c, 0x00 }, /* Volume Control AOUT5 */ 416 { 0x0d, 0x00 }, /* Volume Control AOUT6 */ 417 { 0x0e, 0x00 }, /* Volume Control AOUT7 */ 418 { 0x0f, 0x00 }, /* Volume Control AOUT8 */ 419 { 0x10, 0x00 }, /* DAC Channel Invert */ 420 { 0x11, 0x00 }, /* Volume Control AIN1 */ 421 { 0x12, 0x00 }, /* Volume Control AIN2 */ 422 { 0x13, 0x00 }, /* Volume Control AIN3 */ 423 { 0x14, 0x00 }, /* Volume Control AIN4 */ 424 { 0x15, 0x00 }, /* Volume Control AIN5 */ 425 { 0x16, 0x00 }, /* Volume Control AIN6 */ 426 { 0x17, 0x00 }, /* ADC Channel Invert */ 427 { 0x18, 0x00 }, /* Status Control */ 428 { 0x1a, 0x00 }, /* Status Mask */ 429 { 0x1b, 0x00 }, /* MUTEC Pin Control */ 430 }; 431 432 static bool cs42xx8_volatile_register(struct device *dev, unsigned int reg) 433 { 434 switch (reg) { 435 case CS42XX8_STATUS: 436 return true; 437 default: 438 return false; 439 } 440 } 441 442 static bool cs42xx8_writeable_register(struct device *dev, unsigned int reg) 443 { 444 switch (reg) { 445 case CS42XX8_CHIPID: 446 case CS42XX8_STATUS: 447 return false; 448 default: 449 return true; 450 } 451 } 452 453 const struct regmap_config cs42xx8_regmap_config = { 454 .reg_bits = 8, 455 .val_bits = 8, 456 457 .max_register = CS42XX8_LASTREG, 458 .reg_defaults = cs42xx8_reg, 459 .num_reg_defaults = ARRAY_SIZE(cs42xx8_reg), 460 .volatile_reg = cs42xx8_volatile_register, 461 .writeable_reg = cs42xx8_writeable_register, 462 .cache_type = REGCACHE_RBTREE, 463 }; 464 EXPORT_SYMBOL_GPL(cs42xx8_regmap_config); 465 466 static int cs42xx8_component_probe(struct snd_soc_component *component) 467 { 468 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component); 469 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 470 471 switch (cs42xx8->drvdata->num_adcs) { 472 case 3: 473 snd_soc_add_component_controls(component, cs42xx8_adc3_snd_controls, 474 ARRAY_SIZE(cs42xx8_adc3_snd_controls)); 475 snd_soc_dapm_new_controls(dapm, cs42xx8_adc3_dapm_widgets, 476 ARRAY_SIZE(cs42xx8_adc3_dapm_widgets)); 477 snd_soc_dapm_add_routes(dapm, cs42xx8_adc3_dapm_routes, 478 ARRAY_SIZE(cs42xx8_adc3_dapm_routes)); 479 break; 480 default: 481 break; 482 } 483 484 /* Mute all DAC channels */ 485 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, CS42XX8_DACMUTE_ALL); 486 487 return 0; 488 } 489 490 static const struct snd_soc_component_driver cs42xx8_driver = { 491 .probe = cs42xx8_component_probe, 492 .controls = cs42xx8_snd_controls, 493 .num_controls = ARRAY_SIZE(cs42xx8_snd_controls), 494 .dapm_widgets = cs42xx8_dapm_widgets, 495 .num_dapm_widgets = ARRAY_SIZE(cs42xx8_dapm_widgets), 496 .dapm_routes = cs42xx8_dapm_routes, 497 .num_dapm_routes = ARRAY_SIZE(cs42xx8_dapm_routes), 498 .use_pmdown_time = 1, 499 .endianness = 1, 500 }; 501 502 const struct cs42xx8_driver_data cs42448_data = { 503 .name = "cs42448", 504 .num_adcs = 3, 505 }; 506 EXPORT_SYMBOL_GPL(cs42448_data); 507 508 const struct cs42xx8_driver_data cs42888_data = { 509 .name = "cs42888", 510 .num_adcs = 2, 511 }; 512 EXPORT_SYMBOL_GPL(cs42888_data); 513 514 const struct of_device_id cs42xx8_of_match[] = { 515 { .compatible = "cirrus,cs42448", .data = &cs42448_data, }, 516 { .compatible = "cirrus,cs42888", .data = &cs42888_data, }, 517 { /* sentinel */ } 518 }; 519 MODULE_DEVICE_TABLE(of, cs42xx8_of_match); 520 EXPORT_SYMBOL_GPL(cs42xx8_of_match); 521 522 int cs42xx8_probe(struct device *dev, struct regmap *regmap) 523 { 524 const struct of_device_id *of_id; 525 struct cs42xx8_priv *cs42xx8; 526 int ret, val, i; 527 528 if (IS_ERR(regmap)) { 529 ret = PTR_ERR(regmap); 530 dev_err(dev, "failed to allocate regmap: %d\n", ret); 531 return ret; 532 } 533 534 cs42xx8 = devm_kzalloc(dev, sizeof(*cs42xx8), GFP_KERNEL); 535 if (cs42xx8 == NULL) 536 return -ENOMEM; 537 538 cs42xx8->regmap = regmap; 539 dev_set_drvdata(dev, cs42xx8); 540 541 of_id = of_match_device(cs42xx8_of_match, dev); 542 if (of_id) 543 cs42xx8->drvdata = of_id->data; 544 545 if (!cs42xx8->drvdata) { 546 dev_err(dev, "failed to find driver data\n"); 547 return -EINVAL; 548 } 549 550 cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset", 551 GPIOD_OUT_HIGH); 552 if (IS_ERR(cs42xx8->gpiod_reset)) 553 return PTR_ERR(cs42xx8->gpiod_reset); 554 555 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0); 556 557 cs42xx8->clk = devm_clk_get(dev, "mclk"); 558 if (IS_ERR(cs42xx8->clk)) { 559 dev_err(dev, "failed to get the clock: %ld\n", 560 PTR_ERR(cs42xx8->clk)); 561 return -EINVAL; 562 } 563 564 cs42xx8->sysclk = clk_get_rate(cs42xx8->clk); 565 566 for (i = 0; i < ARRAY_SIZE(cs42xx8->supplies); i++) 567 cs42xx8->supplies[i].supply = cs42xx8_supply_names[i]; 568 569 ret = devm_regulator_bulk_get(dev, 570 ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies); 571 if (ret) { 572 dev_err(dev, "failed to request supplies: %d\n", ret); 573 return ret; 574 } 575 576 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies), 577 cs42xx8->supplies); 578 if (ret) { 579 dev_err(dev, "failed to enable supplies: %d\n", ret); 580 return ret; 581 } 582 583 /* Make sure hardware reset done */ 584 msleep(5); 585 586 /* Validate the chip ID */ 587 ret = regmap_read(cs42xx8->regmap, CS42XX8_CHIPID, &val); 588 if (ret < 0) { 589 dev_err(dev, "failed to get device ID, ret = %d", ret); 590 goto err_enable; 591 } 592 593 /* The top four bits of the chip ID should be 0000 */ 594 if (((val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4) != 0x00) { 595 dev_err(dev, "unmatched chip ID: %d\n", 596 (val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4); 597 ret = -EINVAL; 598 goto err_enable; 599 } 600 601 dev_info(dev, "found device, revision %X\n", 602 val & CS42XX8_CHIPID_REV_ID_MASK); 603 604 cs42xx8_dai.name = cs42xx8->drvdata->name; 605 606 /* Each adc supports stereo input */ 607 cs42xx8_dai.capture.channels_max = cs42xx8->drvdata->num_adcs * 2; 608 609 ret = devm_snd_soc_register_component(dev, &cs42xx8_driver, &cs42xx8_dai, 1); 610 if (ret) { 611 dev_err(dev, "failed to register component:%d\n", ret); 612 goto err_enable; 613 } 614 615 regcache_cache_only(cs42xx8->regmap, true); 616 617 err_enable: 618 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), 619 cs42xx8->supplies); 620 621 return ret; 622 } 623 EXPORT_SYMBOL_GPL(cs42xx8_probe); 624 625 #ifdef CONFIG_PM 626 static int cs42xx8_runtime_resume(struct device *dev) 627 { 628 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev); 629 int ret; 630 631 ret = clk_prepare_enable(cs42xx8->clk); 632 if (ret) { 633 dev_err(dev, "failed to enable mclk: %d\n", ret); 634 return ret; 635 } 636 637 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0); 638 639 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies), 640 cs42xx8->supplies); 641 if (ret) { 642 dev_err(dev, "failed to enable supplies: %d\n", ret); 643 goto err_clk; 644 } 645 646 /* Make sure hardware reset done */ 647 msleep(5); 648 649 regcache_cache_only(cs42xx8->regmap, false); 650 regcache_mark_dirty(cs42xx8->regmap); 651 652 ret = regcache_sync(cs42xx8->regmap); 653 if (ret) { 654 dev_err(dev, "failed to sync regmap: %d\n", ret); 655 goto err_bulk; 656 } 657 658 return 0; 659 660 err_bulk: 661 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), 662 cs42xx8->supplies); 663 err_clk: 664 clk_disable_unprepare(cs42xx8->clk); 665 666 return ret; 667 } 668 669 static int cs42xx8_runtime_suspend(struct device *dev) 670 { 671 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev); 672 673 regcache_cache_only(cs42xx8->regmap, true); 674 675 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), 676 cs42xx8->supplies); 677 678 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 1); 679 680 clk_disable_unprepare(cs42xx8->clk); 681 682 return 0; 683 } 684 #endif 685 686 const struct dev_pm_ops cs42xx8_pm = { 687 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 688 pm_runtime_force_resume) 689 SET_RUNTIME_PM_OPS(cs42xx8_runtime_suspend, cs42xx8_runtime_resume, NULL) 690 }; 691 EXPORT_SYMBOL_GPL(cs42xx8_pm); 692 693 MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec Driver"); 694 MODULE_AUTHOR("Freescale Semiconductor, Inc."); 695 MODULE_LICENSE("GPL"); 696