1 /* 2 * es8316.c -- es8316 ALSA SoC audio driver 3 * Copyright Everest Semiconductor Co.,Ltd 4 * 5 * Authors: David Yang <yangxiaohua@everest-semi.com>, 6 * Daniel Drake <drake@endlessm.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/acpi.h> 15 #include <linux/delay.h> 16 #include <linux/i2c.h> 17 #include <linux/mod_devicetable.h> 18 #include <linux/regmap.h> 19 #include <sound/pcm.h> 20 #include <sound/pcm_params.h> 21 #include <sound/soc.h> 22 #include <sound/soc-dapm.h> 23 #include <sound/tlv.h> 24 #include "es8316.h" 25 26 /* In slave mode at single speed, the codec is documented as accepting 5 27 * MCLK/LRCK ratios, but we also add ratio 400, which is commonly used on 28 * Intel Cherry Trail platforms (19.2MHz MCLK, 48kHz LRCK). 29 */ 30 #define NR_SUPPORTED_MCLK_LRCK_RATIOS 6 31 static const unsigned int supported_mclk_lrck_ratios[] = { 32 256, 384, 400, 512, 768, 1024 33 }; 34 35 struct es8316_priv { 36 unsigned int sysclk; 37 unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS]; 38 struct snd_pcm_hw_constraint_list sysclk_constraints; 39 }; 40 41 /* 42 * ES8316 controls 43 */ 44 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(dac_vol_tlv, -9600, 50, 1); 45 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(adc_vol_tlv, -9600, 50, 1); 46 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_max_gain_tlv, -650, 150, 0); 47 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_min_gain_tlv, -1200, 150, 0); 48 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_target_tlv, -1650, 150, 0); 49 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(hpmixer_gain_tlv, -1200, 150, 0); 50 51 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(adc_pga_gain_tlv, 52 0, 0, TLV_DB_SCALE_ITEM(-350, 0, 0), 53 1, 1, TLV_DB_SCALE_ITEM(0, 0, 0), 54 2, 2, TLV_DB_SCALE_ITEM(250, 0, 0), 55 3, 3, TLV_DB_SCALE_ITEM(450, 0, 0), 56 4, 4, TLV_DB_SCALE_ITEM(700, 0, 0), 57 5, 5, TLV_DB_SCALE_ITEM(1000, 0, 0), 58 6, 6, TLV_DB_SCALE_ITEM(1300, 0, 0), 59 7, 7, TLV_DB_SCALE_ITEM(1600, 0, 0), 60 8, 8, TLV_DB_SCALE_ITEM(1800, 0, 0), 61 9, 9, TLV_DB_SCALE_ITEM(2100, 0, 0), 62 10, 10, TLV_DB_SCALE_ITEM(2400, 0, 0), 63 ); 64 65 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpout_vol_tlv, 66 0, 0, TLV_DB_SCALE_ITEM(-4800, 0, 0), 67 1, 3, TLV_DB_SCALE_ITEM(-2400, 1200, 0), 68 ); 69 70 static const char * const ng_type_txt[] = 71 { "Constant PGA Gain", "Mute ADC Output" }; 72 static const struct soc_enum ng_type = 73 SOC_ENUM_SINGLE(ES8316_ADC_ALC_NG, 6, 2, ng_type_txt); 74 75 static const char * const adcpol_txt[] = { "Normal", "Invert" }; 76 static const struct soc_enum adcpol = 77 SOC_ENUM_SINGLE(ES8316_ADC_MUTE, 1, 2, adcpol_txt); 78 static const char *const dacpol_txt[] = 79 { "Normal", "R Invert", "L Invert", "L + R Invert" }; 80 static const struct soc_enum dacpol = 81 SOC_ENUM_SINGLE(ES8316_DAC_SET1, 0, 4, dacpol_txt); 82 83 static const struct snd_kcontrol_new es8316_snd_controls[] = { 84 SOC_DOUBLE_TLV("Headphone Playback Volume", ES8316_CPHP_ICAL_VOL, 85 4, 0, 3, 1, hpout_vol_tlv), 86 SOC_DOUBLE_TLV("Headphone Mixer Volume", ES8316_HPMIX_VOL, 87 0, 4, 7, 0, hpmixer_gain_tlv), 88 89 SOC_ENUM("Playback Polarity", dacpol), 90 SOC_DOUBLE_R_TLV("DAC Playback Volume", ES8316_DAC_VOLL, 91 ES8316_DAC_VOLR, 0, 0xc0, 1, dac_vol_tlv), 92 SOC_SINGLE("DAC Soft Ramp Switch", ES8316_DAC_SET1, 4, 1, 1), 93 SOC_SINGLE("DAC Soft Ramp Rate", ES8316_DAC_SET1, 2, 4, 0), 94 SOC_SINGLE("DAC Notch Filter Switch", ES8316_DAC_SET2, 6, 1, 0), 95 SOC_SINGLE("DAC Double Fs Switch", ES8316_DAC_SET2, 7, 1, 0), 96 SOC_SINGLE("DAC Stereo Enhancement", ES8316_DAC_SET3, 0, 7, 0), 97 98 SOC_ENUM("Capture Polarity", adcpol), 99 SOC_SINGLE("Mic Boost Switch", ES8316_ADC_D2SEPGA, 0, 1, 0), 100 SOC_SINGLE_TLV("ADC Capture Volume", ES8316_ADC_VOLUME, 101 0, 0xc0, 1, adc_vol_tlv), 102 SOC_SINGLE_TLV("ADC PGA Gain Volume", ES8316_ADC_PGAGAIN, 103 4, 10, 0, adc_pga_gain_tlv), 104 SOC_SINGLE("ADC Soft Ramp Switch", ES8316_ADC_MUTE, 4, 1, 0), 105 SOC_SINGLE("ADC Double Fs Switch", ES8316_ADC_DMIC, 4, 1, 0), 106 107 SOC_SINGLE("ALC Capture Switch", ES8316_ADC_ALC1, 6, 1, 0), 108 SOC_SINGLE_TLV("ALC Capture Max Volume", ES8316_ADC_ALC1, 0, 28, 0, 109 alc_max_gain_tlv), 110 SOC_SINGLE_TLV("ALC Capture Min Volume", ES8316_ADC_ALC2, 0, 28, 0, 111 alc_min_gain_tlv), 112 SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 10, 0, 113 alc_target_tlv), 114 SOC_SINGLE("ALC Capture Hold Time", ES8316_ADC_ALC3, 0, 10, 0), 115 SOC_SINGLE("ALC Capture Decay Time", ES8316_ADC_ALC4, 4, 10, 0), 116 SOC_SINGLE("ALC Capture Attack Time", ES8316_ADC_ALC4, 0, 10, 0), 117 SOC_SINGLE("ALC Capture Noise Gate Switch", ES8316_ADC_ALC_NG, 118 5, 1, 0), 119 SOC_SINGLE("ALC Capture Noise Gate Threshold", ES8316_ADC_ALC_NG, 120 0, 31, 0), 121 SOC_ENUM("ALC Capture Noise Gate Type", ng_type), 122 }; 123 124 /* Analog Input Mux */ 125 static const char * const es8316_analog_in_txt[] = { 126 "lin1-rin1", 127 "lin2-rin2", 128 "lin1-rin1 with 20db Boost", 129 "lin2-rin2 with 20db Boost" 130 }; 131 static const unsigned int es8316_analog_in_values[] = { 0, 1, 2, 3 }; 132 static const struct soc_enum es8316_analog_input_enum = 133 SOC_VALUE_ENUM_SINGLE(ES8316_ADC_PDN_LINSEL, 4, 3, 134 ARRAY_SIZE(es8316_analog_in_txt), 135 es8316_analog_in_txt, 136 es8316_analog_in_values); 137 static const struct snd_kcontrol_new es8316_analog_in_mux_controls = 138 SOC_DAPM_ENUM("Route", es8316_analog_input_enum); 139 140 static const char * const es8316_dmic_txt[] = { 141 "dmic disable", 142 "dmic data at high level", 143 "dmic data at low level", 144 }; 145 static const unsigned int es8316_dmic_values[] = { 0, 1, 2 }; 146 static const struct soc_enum es8316_dmic_src_enum = 147 SOC_VALUE_ENUM_SINGLE(ES8316_ADC_DMIC, 0, 3, 148 ARRAY_SIZE(es8316_dmic_txt), 149 es8316_dmic_txt, 150 es8316_dmic_values); 151 static const struct snd_kcontrol_new es8316_dmic_src_controls = 152 SOC_DAPM_ENUM("Route", es8316_dmic_src_enum); 153 154 /* hp mixer mux */ 155 static const char * const es8316_hpmux_texts[] = { 156 "lin1-rin1", 157 "lin2-rin2", 158 "lin-rin with Boost", 159 "lin-rin with Boost and PGA" 160 }; 161 162 static const unsigned int es8316_hpmux_values[] = { 0, 1, 2, 3 }; 163 164 static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL, 165 4, es8316_hpmux_texts); 166 167 static const struct snd_kcontrol_new es8316_left_hpmux_controls = 168 SOC_DAPM_ENUM("Route", es8316_left_hpmux_enum); 169 170 static SOC_ENUM_SINGLE_DECL(es8316_right_hpmux_enum, ES8316_HPMIX_SEL, 171 0, es8316_hpmux_texts); 172 173 static const struct snd_kcontrol_new es8316_right_hpmux_controls = 174 SOC_DAPM_ENUM("Route", es8316_right_hpmux_enum); 175 176 /* headphone Output Mixer */ 177 static const struct snd_kcontrol_new es8316_out_left_mix[] = { 178 SOC_DAPM_SINGLE("LLIN Switch", ES8316_HPMIX_SWITCH, 6, 1, 0), 179 SOC_DAPM_SINGLE("Left DAC Switch", ES8316_HPMIX_SWITCH, 7, 1, 0), 180 }; 181 static const struct snd_kcontrol_new es8316_out_right_mix[] = { 182 SOC_DAPM_SINGLE("RLIN Switch", ES8316_HPMIX_SWITCH, 2, 1, 0), 183 SOC_DAPM_SINGLE("Right DAC Switch", ES8316_HPMIX_SWITCH, 3, 1, 0), 184 }; 185 186 /* DAC data source mux */ 187 static const char * const es8316_dacsrc_texts[] = { 188 "LDATA TO LDAC, RDATA TO RDAC", 189 "LDATA TO LDAC, LDATA TO RDAC", 190 "RDATA TO LDAC, RDATA TO RDAC", 191 "RDATA TO LDAC, LDATA TO RDAC", 192 }; 193 194 static const unsigned int es8316_dacsrc_values[] = { 0, 1, 2, 3 }; 195 196 static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1, 197 6, es8316_dacsrc_texts); 198 199 static const struct snd_kcontrol_new es8316_dacsrc_mux_controls = 200 SOC_DAPM_ENUM("Route", es8316_dacsrc_mux_enum); 201 202 static const struct snd_soc_dapm_widget es8316_dapm_widgets[] = { 203 SND_SOC_DAPM_SUPPLY("Bias", ES8316_SYS_PDN, 3, 1, NULL, 0), 204 SND_SOC_DAPM_SUPPLY("Analog power", ES8316_SYS_PDN, 4, 1, NULL, 0), 205 SND_SOC_DAPM_SUPPLY("Mic Bias", ES8316_SYS_PDN, 5, 1, NULL, 0), 206 207 SND_SOC_DAPM_INPUT("DMIC"), 208 SND_SOC_DAPM_INPUT("MIC1"), 209 SND_SOC_DAPM_INPUT("MIC2"), 210 211 /* Input Mux */ 212 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, 213 &es8316_analog_in_mux_controls), 214 215 SND_SOC_DAPM_SUPPLY("ADC Vref", ES8316_SYS_PDN, 1, 1, NULL, 0), 216 SND_SOC_DAPM_SUPPLY("ADC bias", ES8316_SYS_PDN, 2, 1, NULL, 0), 217 SND_SOC_DAPM_SUPPLY("ADC Clock", ES8316_CLKMGR_CLKSW, 3, 0, NULL, 0), 218 SND_SOC_DAPM_PGA("Line input PGA", ES8316_ADC_PDN_LINSEL, 219 7, 1, NULL, 0), 220 SND_SOC_DAPM_ADC("Mono ADC", NULL, ES8316_ADC_PDN_LINSEL, 6, 1), 221 SND_SOC_DAPM_MUX("Digital Mic Mux", SND_SOC_NOPM, 0, 0, 222 &es8316_dmic_src_controls), 223 224 /* Digital Interface */ 225 SND_SOC_DAPM_AIF_OUT("I2S OUT", "I2S1 Capture", 1, 226 ES8316_SERDATA_ADC, 6, 1), 227 SND_SOC_DAPM_AIF_IN("I2S IN", "I2S1 Playback", 0, 228 SND_SOC_NOPM, 0, 0), 229 230 SND_SOC_DAPM_MUX("DAC Source Mux", SND_SOC_NOPM, 0, 0, 231 &es8316_dacsrc_mux_controls), 232 233 SND_SOC_DAPM_SUPPLY("DAC Vref", ES8316_SYS_PDN, 0, 1, NULL, 0), 234 SND_SOC_DAPM_SUPPLY("DAC Clock", ES8316_CLKMGR_CLKSW, 2, 0, NULL, 0), 235 SND_SOC_DAPM_DAC("Right DAC", NULL, ES8316_DAC_PDN, 0, 1), 236 SND_SOC_DAPM_DAC("Left DAC", NULL, ES8316_DAC_PDN, 4, 1), 237 238 /* Headphone Output Side */ 239 SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, 240 &es8316_left_hpmux_controls), 241 SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, 242 &es8316_right_hpmux_controls), 243 SND_SOC_DAPM_MIXER("Left Headphone Mixer", ES8316_HPMIX_PDN, 244 5, 1, &es8316_out_left_mix[0], 245 ARRAY_SIZE(es8316_out_left_mix)), 246 SND_SOC_DAPM_MIXER("Right Headphone Mixer", ES8316_HPMIX_PDN, 247 1, 1, &es8316_out_right_mix[0], 248 ARRAY_SIZE(es8316_out_right_mix)), 249 SND_SOC_DAPM_PGA("Left Headphone Mixer Out", ES8316_HPMIX_PDN, 250 4, 1, NULL, 0), 251 SND_SOC_DAPM_PGA("Right Headphone Mixer Out", ES8316_HPMIX_PDN, 252 0, 1, NULL, 0), 253 254 SND_SOC_DAPM_OUT_DRV("Left Headphone Charge Pump", ES8316_CPHP_OUTEN, 255 6, 0, NULL, 0), 256 SND_SOC_DAPM_OUT_DRV("Right Headphone Charge Pump", ES8316_CPHP_OUTEN, 257 2, 0, NULL, 0), 258 SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", ES8316_CPHP_PDN2, 259 5, 1, NULL, 0), 260 SND_SOC_DAPM_SUPPLY("Headphone Charge Pump Clock", ES8316_CLKMGR_CLKSW, 261 4, 0, NULL, 0), 262 263 SND_SOC_DAPM_OUT_DRV("Left Headphone Driver", ES8316_CPHP_OUTEN, 264 5, 0, NULL, 0), 265 SND_SOC_DAPM_OUT_DRV("Right Headphone Driver", ES8316_CPHP_OUTEN, 266 1, 0, NULL, 0), 267 SND_SOC_DAPM_SUPPLY("Headphone Out", ES8316_CPHP_PDN1, 2, 1, NULL, 0), 268 269 /* pdn_Lical and pdn_Rical bits are documented as Reserved, but must 270 * be explicitly unset in order to enable HP output 271 */ 272 SND_SOC_DAPM_SUPPLY("Left Headphone ical", ES8316_CPHP_ICAL_VOL, 273 7, 1, NULL, 0), 274 SND_SOC_DAPM_SUPPLY("Right Headphone ical", ES8316_CPHP_ICAL_VOL, 275 3, 1, NULL, 0), 276 277 SND_SOC_DAPM_OUTPUT("HPOL"), 278 SND_SOC_DAPM_OUTPUT("HPOR"), 279 }; 280 281 static const struct snd_soc_dapm_route es8316_dapm_routes[] = { 282 /* Recording */ 283 {"MIC1", NULL, "Mic Bias"}, 284 {"MIC2", NULL, "Mic Bias"}, 285 {"MIC1", NULL, "Bias"}, 286 {"MIC2", NULL, "Bias"}, 287 {"MIC1", NULL, "Analog power"}, 288 {"MIC2", NULL, "Analog power"}, 289 290 {"Differential Mux", "lin1-rin1", "MIC1"}, 291 {"Differential Mux", "lin2-rin2", "MIC2"}, 292 {"Line input PGA", NULL, "Differential Mux"}, 293 294 {"Mono ADC", NULL, "ADC Clock"}, 295 {"Mono ADC", NULL, "ADC Vref"}, 296 {"Mono ADC", NULL, "ADC bias"}, 297 {"Mono ADC", NULL, "Line input PGA"}, 298 299 /* It's not clear why, but to avoid recording only silence, 300 * the DAC clock must be running for the ADC to work. 301 */ 302 {"Mono ADC", NULL, "DAC Clock"}, 303 304 {"Digital Mic Mux", "dmic disable", "Mono ADC"}, 305 306 {"I2S OUT", NULL, "Digital Mic Mux"}, 307 308 /* Playback */ 309 {"DAC Source Mux", "LDATA TO LDAC, RDATA TO RDAC", "I2S IN"}, 310 311 {"Left DAC", NULL, "DAC Clock"}, 312 {"Right DAC", NULL, "DAC Clock"}, 313 314 {"Left DAC", NULL, "DAC Vref"}, 315 {"Right DAC", NULL, "DAC Vref"}, 316 317 {"Left DAC", NULL, "DAC Source Mux"}, 318 {"Right DAC", NULL, "DAC Source Mux"}, 319 320 {"Left Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"}, 321 {"Right Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"}, 322 323 {"Left Headphone Mixer", "LLIN Switch", "Left Headphone Mux"}, 324 {"Left Headphone Mixer", "Left DAC Switch", "Left DAC"}, 325 326 {"Right Headphone Mixer", "RLIN Switch", "Right Headphone Mux"}, 327 {"Right Headphone Mixer", "Right DAC Switch", "Right DAC"}, 328 329 {"Left Headphone Mixer Out", NULL, "Left Headphone Mixer"}, 330 {"Right Headphone Mixer Out", NULL, "Right Headphone Mixer"}, 331 332 {"Left Headphone Charge Pump", NULL, "Left Headphone Mixer Out"}, 333 {"Right Headphone Charge Pump", NULL, "Right Headphone Mixer Out"}, 334 335 {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump"}, 336 {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump"}, 337 338 {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"}, 339 {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"}, 340 341 {"Left Headphone Driver", NULL, "Left Headphone Charge Pump"}, 342 {"Right Headphone Driver", NULL, "Right Headphone Charge Pump"}, 343 344 {"HPOL", NULL, "Left Headphone Driver"}, 345 {"HPOR", NULL, "Right Headphone Driver"}, 346 347 {"HPOL", NULL, "Left Headphone ical"}, 348 {"HPOR", NULL, "Right Headphone ical"}, 349 350 {"Headphone Out", NULL, "Bias"}, 351 {"Headphone Out", NULL, "Analog power"}, 352 {"HPOL", NULL, "Headphone Out"}, 353 {"HPOR", NULL, "Headphone Out"}, 354 }; 355 356 static int es8316_set_dai_sysclk(struct snd_soc_dai *codec_dai, 357 int clk_id, unsigned int freq, int dir) 358 { 359 struct snd_soc_codec *codec = codec_dai->codec; 360 struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec); 361 int i; 362 int count = 0; 363 364 es8316->sysclk = freq; 365 366 if (freq == 0) 367 return 0; 368 369 /* Limit supported sample rates to ones that can be autodetected 370 * by the codec running in slave mode. 371 */ 372 for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) { 373 const unsigned int ratio = supported_mclk_lrck_ratios[i]; 374 375 if (freq % ratio == 0) 376 es8316->allowed_rates[count++] = freq / ratio; 377 } 378 379 es8316->sysclk_constraints.list = es8316->allowed_rates; 380 es8316->sysclk_constraints.count = count; 381 382 return 0; 383 } 384 385 static int es8316_set_dai_fmt(struct snd_soc_dai *codec_dai, 386 unsigned int fmt) 387 { 388 struct snd_soc_codec *codec = codec_dai->codec; 389 u8 serdata1 = 0; 390 u8 serdata2 = 0; 391 u8 clksw; 392 u8 mask; 393 394 if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) { 395 dev_err(codec->dev, "Codec driver only supports slave mode\n"); 396 return -EINVAL; 397 } 398 399 if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) { 400 dev_err(codec->dev, "Codec driver only supports I2S format\n"); 401 return -EINVAL; 402 } 403 404 /* Clock inversion */ 405 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 406 case SND_SOC_DAIFMT_NB_NF: 407 break; 408 case SND_SOC_DAIFMT_IB_IF: 409 serdata1 |= ES8316_SERDATA1_BCLK_INV; 410 serdata2 |= ES8316_SERDATA2_ADCLRP; 411 break; 412 case SND_SOC_DAIFMT_IB_NF: 413 serdata1 |= ES8316_SERDATA1_BCLK_INV; 414 break; 415 case SND_SOC_DAIFMT_NB_IF: 416 serdata2 |= ES8316_SERDATA2_ADCLRP; 417 break; 418 default: 419 return -EINVAL; 420 } 421 422 mask = ES8316_SERDATA1_MASTER | ES8316_SERDATA1_BCLK_INV; 423 snd_soc_update_bits(codec, ES8316_SERDATA1, mask, serdata1); 424 425 mask = ES8316_SERDATA2_FMT_MASK | ES8316_SERDATA2_ADCLRP; 426 snd_soc_update_bits(codec, ES8316_SERDATA_ADC, mask, serdata2); 427 snd_soc_update_bits(codec, ES8316_SERDATA_DAC, mask, serdata2); 428 429 /* Enable BCLK and MCLK inputs in slave mode */ 430 clksw = ES8316_CLKMGR_CLKSW_MCLK_ON | ES8316_CLKMGR_CLKSW_BCLK_ON; 431 snd_soc_update_bits(codec, ES8316_CLKMGR_CLKSW, clksw, clksw); 432 433 return 0; 434 } 435 436 static int es8316_pcm_startup(struct snd_pcm_substream *substream, 437 struct snd_soc_dai *dai) 438 { 439 struct snd_soc_codec *codec = dai->codec; 440 struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec); 441 442 if (es8316->sysclk == 0) { 443 dev_err(codec->dev, "No sysclk provided\n"); 444 return -EINVAL; 445 } 446 447 /* The set of sample rates that can be supported depends on the 448 * MCLK supplied to the CODEC. 449 */ 450 snd_pcm_hw_constraint_list(substream->runtime, 0, 451 SNDRV_PCM_HW_PARAM_RATE, 452 &es8316->sysclk_constraints); 453 454 return 0; 455 } 456 457 static int es8316_pcm_hw_params(struct snd_pcm_substream *substream, 458 struct snd_pcm_hw_params *params, 459 struct snd_soc_dai *dai) 460 { 461 struct snd_soc_pcm_runtime *rtd = substream->private_data; 462 struct snd_soc_codec *codec = rtd->codec; 463 struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec); 464 u8 wordlen = 0; 465 466 if (!es8316->sysclk) { 467 dev_err(codec->dev, "No MCLK configured\n"); 468 return -EINVAL; 469 } 470 471 switch (params_format(params)) { 472 case SNDRV_PCM_FORMAT_S16_LE: 473 wordlen = ES8316_SERDATA2_LEN_16; 474 break; 475 case SNDRV_PCM_FORMAT_S20_3LE: 476 wordlen = ES8316_SERDATA2_LEN_20; 477 break; 478 case SNDRV_PCM_FORMAT_S24_LE: 479 wordlen = ES8316_SERDATA2_LEN_24; 480 break; 481 case SNDRV_PCM_FORMAT_S32_LE: 482 wordlen = ES8316_SERDATA2_LEN_32; 483 break; 484 default: 485 return -EINVAL; 486 } 487 488 snd_soc_update_bits(codec, ES8316_SERDATA_DAC, 489 ES8316_SERDATA2_LEN_MASK, wordlen); 490 snd_soc_update_bits(codec, ES8316_SERDATA_ADC, 491 ES8316_SERDATA2_LEN_MASK, wordlen); 492 return 0; 493 } 494 495 static int es8316_mute(struct snd_soc_dai *dai, int mute) 496 { 497 snd_soc_update_bits(dai->codec, ES8316_DAC_SET1, 0x20, 498 mute ? 0x20 : 0); 499 return 0; 500 } 501 502 #define ES8316_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 503 SNDRV_PCM_FMTBIT_S24_LE) 504 505 static struct snd_soc_dai_ops es8316_ops = { 506 .startup = es8316_pcm_startup, 507 .hw_params = es8316_pcm_hw_params, 508 .set_fmt = es8316_set_dai_fmt, 509 .set_sysclk = es8316_set_dai_sysclk, 510 .digital_mute = es8316_mute, 511 }; 512 513 static struct snd_soc_dai_driver es8316_dai = { 514 .name = "ES8316 HiFi", 515 .playback = { 516 .stream_name = "Playback", 517 .channels_min = 1, 518 .channels_max = 2, 519 .rates = SNDRV_PCM_RATE_8000_48000, 520 .formats = ES8316_FORMATS, 521 }, 522 .capture = { 523 .stream_name = "Capture", 524 .channels_min = 1, 525 .channels_max = 2, 526 .rates = SNDRV_PCM_RATE_8000_48000, 527 .formats = ES8316_FORMATS, 528 }, 529 .ops = &es8316_ops, 530 .symmetric_rates = 1, 531 }; 532 533 static int es8316_probe(struct snd_soc_codec *codec) 534 { 535 /* Reset codec and enable current state machine */ 536 snd_soc_write(codec, ES8316_RESET, 0x3f); 537 usleep_range(5000, 5500); 538 snd_soc_write(codec, ES8316_RESET, ES8316_RESET_CSM_ON); 539 msleep(30); 540 541 /* 542 * Documentation is unclear, but this value from the vendor driver is 543 * needed otherwise audio output is silent. 544 */ 545 snd_soc_write(codec, ES8316_SYS_VMIDSEL, 0xff); 546 547 /* 548 * Documentation for this register is unclear and incomplete, 549 * but here is a vendor-provided value that improves volume 550 * and quality for Intel CHT platforms. 551 */ 552 snd_soc_write(codec, ES8316_CLKMGR_ADCOSR, 0x32); 553 554 return 0; 555 } 556 557 static struct snd_soc_codec_driver soc_codec_dev_es8316 = { 558 .probe = es8316_probe, 559 .idle_bias_off = true, 560 561 .component_driver = { 562 .controls = es8316_snd_controls, 563 .num_controls = ARRAY_SIZE(es8316_snd_controls), 564 .dapm_widgets = es8316_dapm_widgets, 565 .num_dapm_widgets = ARRAY_SIZE(es8316_dapm_widgets), 566 .dapm_routes = es8316_dapm_routes, 567 .num_dapm_routes = ARRAY_SIZE(es8316_dapm_routes), 568 }, 569 }; 570 571 static const struct regmap_config es8316_regmap = { 572 .reg_bits = 8, 573 .val_bits = 8, 574 .max_register = 0x53, 575 .cache_type = REGCACHE_RBTREE, 576 }; 577 578 static int es8316_i2c_probe(struct i2c_client *i2c_client, 579 const struct i2c_device_id *id) 580 { 581 struct es8316_priv *es8316; 582 struct regmap *regmap; 583 584 es8316 = devm_kzalloc(&i2c_client->dev, sizeof(struct es8316_priv), 585 GFP_KERNEL); 586 if (es8316 == NULL) 587 return -ENOMEM; 588 589 i2c_set_clientdata(i2c_client, es8316); 590 591 regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap); 592 if (IS_ERR(regmap)) 593 return PTR_ERR(regmap); 594 595 return snd_soc_register_codec(&i2c_client->dev, &soc_codec_dev_es8316, 596 &es8316_dai, 1); 597 } 598 599 static int es8316_i2c_remove(struct i2c_client *client) 600 { 601 snd_soc_unregister_codec(&client->dev); 602 return 0; 603 } 604 605 static const struct i2c_device_id es8316_i2c_id[] = { 606 {"es8316", 0 }, 607 {} 608 }; 609 MODULE_DEVICE_TABLE(i2c, es8316_i2c_id); 610 611 static const struct of_device_id es8316_of_match[] = { 612 { .compatible = "everest,es8316", }, 613 {}, 614 }; 615 MODULE_DEVICE_TABLE(of, es8316_of_match); 616 617 static const struct acpi_device_id es8316_acpi_match[] = { 618 {"ESSX8316", 0}, 619 {}, 620 }; 621 MODULE_DEVICE_TABLE(acpi, es8316_acpi_match); 622 623 static struct i2c_driver es8316_i2c_driver = { 624 .driver = { 625 .name = "es8316", 626 .acpi_match_table = ACPI_PTR(es8316_acpi_match), 627 .of_match_table = of_match_ptr(es8316_of_match), 628 }, 629 .probe = es8316_i2c_probe, 630 .remove = es8316_i2c_remove, 631 .id_table = es8316_i2c_id, 632 }; 633 module_i2c_driver(es8316_i2c_driver); 634 635 MODULE_DESCRIPTION("Everest Semi ES8316 ALSA SoC Codec Driver"); 636 MODULE_AUTHOR("David Yang <yangxiaohua@everest-semi.com>"); 637 MODULE_LICENSE("GPL v2"); 638