1 /* 2 * ak4641.c -- AK4641 ALSA Soc Audio driver 3 * 4 * Copyright (C) 2008 Harald Welte <laforge@gnufiish.org> 5 * Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru> 6 * 7 * Based on ak4535.c by Richard Purdie 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/init.h> 16 #include <linux/delay.h> 17 #include <linux/gpio.h> 18 #include <linux/pm.h> 19 #include <linux/i2c.h> 20 #include <linux/regmap.h> 21 #include <linux/slab.h> 22 #include <sound/core.h> 23 #include <sound/pcm.h> 24 #include <sound/pcm_params.h> 25 #include <sound/soc.h> 26 #include <sound/initval.h> 27 #include <sound/tlv.h> 28 #include <sound/ak4641.h> 29 30 /* AK4641 register space */ 31 #define AK4641_PM1 0x00 32 #define AK4641_PM2 0x01 33 #define AK4641_SIG1 0x02 34 #define AK4641_SIG2 0x03 35 #define AK4641_MODE1 0x04 36 #define AK4641_MODE2 0x05 37 #define AK4641_DAC 0x06 38 #define AK4641_MIC 0x07 39 #define AK4641_TIMER 0x08 40 #define AK4641_ALC1 0x09 41 #define AK4641_ALC2 0x0a 42 #define AK4641_PGA 0x0b 43 #define AK4641_LATT 0x0c 44 #define AK4641_RATT 0x0d 45 #define AK4641_VOL 0x0e 46 #define AK4641_STATUS 0x0f 47 #define AK4641_EQLO 0x10 48 #define AK4641_EQMID 0x11 49 #define AK4641_EQHI 0x12 50 #define AK4641_BTIF 0x13 51 52 /* codec private data */ 53 struct ak4641_priv { 54 struct regmap *regmap; 55 unsigned int sysclk; 56 int deemph; 57 int playback_fs; 58 }; 59 60 /* 61 * ak4641 register cache 62 */ 63 static const struct reg_default ak4641_reg_defaults[] = { 64 { 0, 0x00 }, { 1, 0x80 }, { 2, 0x00 }, { 3, 0x80 }, 65 { 4, 0x02 }, { 5, 0x00 }, { 6, 0x11 }, { 7, 0x05 }, 66 { 8, 0x00 }, { 9, 0x00 }, { 10, 0x36 }, { 11, 0x10 }, 67 { 12, 0x00 }, { 13, 0x00 }, { 14, 0x57 }, { 15, 0x00 }, 68 { 16, 0x88 }, { 17, 0x88 }, { 18, 0x08 }, { 19, 0x08 } 69 }; 70 71 static const int deemph_settings[] = {44100, 0, 48000, 32000}; 72 73 static int ak4641_set_deemph(struct snd_soc_codec *codec) 74 { 75 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 76 int i, best = 0; 77 78 for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) { 79 /* if deemphasis is on, select the nearest available rate */ 80 if (ak4641->deemph && deemph_settings[i] != 0 && 81 abs(deemph_settings[i] - ak4641->playback_fs) < 82 abs(deemph_settings[best] - ak4641->playback_fs)) 83 best = i; 84 85 if (!ak4641->deemph && deemph_settings[i] == 0) 86 best = i; 87 } 88 89 dev_dbg(codec->dev, "Set deemphasis %d\n", best); 90 91 return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best); 92 } 93 94 static int ak4641_put_deemph(struct snd_kcontrol *kcontrol, 95 struct snd_ctl_elem_value *ucontrol) 96 { 97 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); 98 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 99 int deemph = ucontrol->value.integer.value[0]; 100 101 if (deemph > 1) 102 return -EINVAL; 103 104 ak4641->deemph = deemph; 105 106 return ak4641_set_deemph(codec); 107 } 108 109 static int ak4641_get_deemph(struct snd_kcontrol *kcontrol, 110 struct snd_ctl_elem_value *ucontrol) 111 { 112 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); 113 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 114 115 ucontrol->value.integer.value[0] = ak4641->deemph; 116 return 0; 117 }; 118 119 static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"}; 120 static const char *ak4641_hp_out[] = {"Stereo", "Mono"}; 121 static const char *ak4641_mic_select[] = {"Internal", "External"}; 122 static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"}; 123 124 125 static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0); 126 static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0); 127 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0); 128 static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0); 129 static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0); 130 static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0); 131 static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0); 132 static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0); 133 static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0); 134 135 136 static SOC_ENUM_SINGLE_DECL(ak4641_mono_out_enum, 137 AK4641_SIG1, 6, ak4641_mono_out); 138 static SOC_ENUM_SINGLE_DECL(ak4641_hp_out_enum, 139 AK4641_MODE2, 2, ak4641_hp_out); 140 static SOC_ENUM_SINGLE_DECL(ak4641_mic_select_enum, 141 AK4641_MIC, 1, ak4641_mic_select); 142 static SOC_ENUM_SINGLE_DECL(ak4641_mic_or_dac_enum, 143 AK4641_BTIF, 4, ak4641_mic_or_dac); 144 145 static const struct snd_kcontrol_new ak4641_snd_controls[] = { 146 SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum), 147 SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1, 148 mono_gain_tlv), 149 SOC_ENUM("Headphone Output", ak4641_hp_out_enum), 150 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, 151 ak4641_get_deemph, ak4641_put_deemph), 152 153 SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv), 154 155 SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0), 156 SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0), 157 SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0), 158 159 SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0), 160 161 SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv), 162 SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0), 163 SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0), 164 165 SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv), 166 167 SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT, 168 AK4641_RATT, 0, 255, 1, master_tlv), 169 170 SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv), 171 172 SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0), 173 SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv), 174 SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv), 175 SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv), 176 SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv), 177 SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv), 178 }; 179 180 /* Mono 1 Mixer */ 181 static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = { 182 SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0, 183 mic_mono_sidetone_tlv), 184 SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0), 185 SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0), 186 }; 187 188 /* Stereo Mixer */ 189 static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = { 190 SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0, 191 mic_stereo_sidetone_tlv), 192 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0), 193 SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0), 194 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0), 195 }; 196 197 /* Input Mixer */ 198 static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = { 199 SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0), 200 SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0), 201 }; 202 203 /* Mic mux */ 204 static const struct snd_kcontrol_new ak4641_mic_mux_control = 205 SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum); 206 207 /* Input mux */ 208 static const struct snd_kcontrol_new ak4641_input_mux_control = 209 SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum); 210 211 /* mono 2 switch */ 212 static const struct snd_kcontrol_new ak4641_mono2_control = 213 SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0); 214 215 /* ak4641 dapm widgets */ 216 static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = { 217 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0, 218 &ak4641_stereo_mixer_controls[0], 219 ARRAY_SIZE(ak4641_stereo_mixer_controls)), 220 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0, 221 &ak4641_mono1_mixer_controls[0], 222 ARRAY_SIZE(ak4641_mono1_mixer_controls)), 223 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, 224 &ak4641_input_mixer_controls[0], 225 ARRAY_SIZE(ak4641_input_mixer_controls)), 226 SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0, 227 &ak4641_mic_mux_control), 228 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, 229 &ak4641_input_mux_control), 230 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0, 231 &ak4641_mono2_control), 232 233 SND_SOC_DAPM_OUTPUT("LOUT"), 234 SND_SOC_DAPM_OUTPUT("ROUT"), 235 SND_SOC_DAPM_OUTPUT("MOUT1"), 236 SND_SOC_DAPM_OUTPUT("MOUT2"), 237 SND_SOC_DAPM_OUTPUT("MICOUT"), 238 239 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0), 240 SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0), 241 SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0), 242 SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0), 243 SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0), 244 245 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0), 246 SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0), 247 248 SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0), 249 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0), 250 251 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0), 252 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0), 253 254 SND_SOC_DAPM_INPUT("MICIN"), 255 SND_SOC_DAPM_INPUT("MICEXT"), 256 SND_SOC_DAPM_INPUT("AUX"), 257 SND_SOC_DAPM_INPUT("AIN"), 258 }; 259 260 static const struct snd_soc_dapm_route ak4641_audio_map[] = { 261 /* Stereo Mixer */ 262 {"Stereo Mixer", "Playback Switch", "DAC"}, 263 {"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"}, 264 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"}, 265 266 /* Mono 1 Mixer */ 267 {"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"}, 268 {"Mono1 Mixer", "Mono Playback Switch", "DAC"}, 269 270 /* Mic */ 271 {"Mic", NULL, "AIN"}, 272 {"Mic Mux", "Internal", "Mic Int Bias"}, 273 {"Mic Mux", "External", "Mic Ext Bias"}, 274 {"Mic Int Bias", NULL, "MICIN"}, 275 {"Mic Ext Bias", NULL, "MICEXT"}, 276 {"MICOUT", NULL, "Mic Mux"}, 277 278 /* Input Mux */ 279 {"Input Mux", "Microphone", "Mic"}, 280 {"Input Mux", "Voice DAC", "Voice DAC"}, 281 282 /* Line Out */ 283 {"LOUT", NULL, "Line Out"}, 284 {"ROUT", NULL, "Line Out"}, 285 {"Line Out", NULL, "Stereo Mixer"}, 286 287 /* Mono 1 Out */ 288 {"MOUT1", NULL, "Mono Out"}, 289 {"Mono Out", NULL, "Mono1 Mixer"}, 290 291 /* Mono 2 Out */ 292 {"MOUT2", NULL, "Mono 2 Enable"}, 293 {"Mono 2 Enable", "Switch", "Mono Out 2"}, 294 {"Mono Out 2", NULL, "Stereo Mixer"}, 295 296 {"Voice ADC", NULL, "Mono 2 Enable"}, 297 298 /* Aux In */ 299 {"AUX In", NULL, "AUX"}, 300 301 /* ADC */ 302 {"ADC", NULL, "Input Mixer"}, 303 {"Input Mixer", "Mic Capture Switch", "Mic"}, 304 {"Input Mixer", "Aux Capture Switch", "AUX In"}, 305 }; 306 307 static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai, 308 int clk_id, unsigned int freq, int dir) 309 { 310 struct snd_soc_codec *codec = codec_dai->codec; 311 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 312 313 ak4641->sysclk = freq; 314 return 0; 315 } 316 317 static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream, 318 struct snd_pcm_hw_params *params, 319 struct snd_soc_dai *dai) 320 { 321 struct snd_soc_codec *codec = dai->codec; 322 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 323 int rate = params_rate(params), fs = 256; 324 u8 mode2; 325 326 if (rate) 327 fs = ak4641->sysclk / rate; 328 else 329 return -EINVAL; 330 331 /* set fs */ 332 switch (fs) { 333 case 1024: 334 mode2 = (0x2 << 5); 335 break; 336 case 512: 337 mode2 = (0x1 << 5); 338 break; 339 case 256: 340 mode2 = (0x0 << 5); 341 break; 342 default: 343 dev_err(codec->dev, "Error: unsupported fs=%d\n", fs); 344 return -EINVAL; 345 } 346 347 snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2); 348 349 /* Update de-emphasis filter for the new rate */ 350 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 351 ak4641->playback_fs = rate; 352 ak4641_set_deemph(codec); 353 } 354 355 return 0; 356 } 357 358 static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai, 359 unsigned int fmt) 360 { 361 struct snd_soc_codec *codec = codec_dai->codec; 362 u8 btif; 363 int ret; 364 365 /* interface format */ 366 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 367 case SND_SOC_DAIFMT_I2S: 368 btif = (0x3 << 5); 369 break; 370 case SND_SOC_DAIFMT_LEFT_J: 371 btif = (0x2 << 5); 372 break; 373 case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */ 374 btif = (0x0 << 5); 375 break; 376 case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */ 377 btif = (0x1 << 5); 378 break; 379 default: 380 return -EINVAL; 381 } 382 383 ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif); 384 if (ret < 0) 385 return ret; 386 387 return 0; 388 } 389 390 static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai, 391 unsigned int fmt) 392 { 393 struct snd_soc_codec *codec = codec_dai->codec; 394 u8 mode1 = 0; 395 396 /* interface format */ 397 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 398 case SND_SOC_DAIFMT_I2S: 399 mode1 = 0x02; 400 break; 401 case SND_SOC_DAIFMT_LEFT_J: 402 mode1 = 0x01; 403 break; 404 default: 405 return -EINVAL; 406 } 407 408 return snd_soc_write(codec, AK4641_MODE1, mode1); 409 } 410 411 static int ak4641_mute(struct snd_soc_dai *dai, int mute) 412 { 413 struct snd_soc_codec *codec = dai->codec; 414 415 return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0); 416 } 417 418 static int ak4641_set_bias_level(struct snd_soc_codec *codec, 419 enum snd_soc_bias_level level) 420 { 421 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 422 struct ak4641_platform_data *pdata = codec->dev->platform_data; 423 int ret; 424 425 switch (level) { 426 case SND_SOC_BIAS_ON: 427 /* unmute */ 428 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0); 429 break; 430 case SND_SOC_BIAS_PREPARE: 431 /* mute */ 432 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20); 433 break; 434 case SND_SOC_BIAS_STANDBY: 435 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) { 436 if (pdata && gpio_is_valid(pdata->gpio_power)) 437 gpio_set_value(pdata->gpio_power, 1); 438 mdelay(1); 439 if (pdata && gpio_is_valid(pdata->gpio_npdn)) 440 gpio_set_value(pdata->gpio_npdn, 1); 441 mdelay(1); 442 443 ret = regcache_sync(ak4641->regmap); 444 if (ret) { 445 dev_err(codec->dev, 446 "Failed to sync cache: %d\n", ret); 447 return ret; 448 } 449 } 450 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80); 451 snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0); 452 break; 453 case SND_SOC_BIAS_OFF: 454 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0); 455 if (pdata && gpio_is_valid(pdata->gpio_npdn)) 456 gpio_set_value(pdata->gpio_npdn, 0); 457 if (pdata && gpio_is_valid(pdata->gpio_power)) 458 gpio_set_value(pdata->gpio_power, 0); 459 regcache_mark_dirty(ak4641->regmap); 460 break; 461 } 462 return 0; 463 } 464 465 #define AK4641_RATES (SNDRV_PCM_RATE_8000_48000) 466 #define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 467 SNDRV_PCM_RATE_16000) 468 #define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) 469 470 static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = { 471 .hw_params = ak4641_i2s_hw_params, 472 .set_fmt = ak4641_i2s_set_dai_fmt, 473 .digital_mute = ak4641_mute, 474 .set_sysclk = ak4641_set_dai_sysclk, 475 }; 476 477 static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = { 478 .hw_params = NULL, /* rates are controlled by BT chip */ 479 .set_fmt = ak4641_pcm_set_dai_fmt, 480 .digital_mute = ak4641_mute, 481 .set_sysclk = ak4641_set_dai_sysclk, 482 }; 483 484 static struct snd_soc_dai_driver ak4641_dai[] = { 485 { 486 .name = "ak4641-hifi", 487 .id = 1, 488 .playback = { 489 .stream_name = "HiFi Playback", 490 .channels_min = 1, 491 .channels_max = 2, 492 .rates = AK4641_RATES, 493 .formats = AK4641_FORMATS, 494 }, 495 .capture = { 496 .stream_name = "HiFi Capture", 497 .channels_min = 1, 498 .channels_max = 2, 499 .rates = AK4641_RATES, 500 .formats = AK4641_FORMATS, 501 }, 502 .ops = &ak4641_i2s_dai_ops, 503 .symmetric_rates = 1, 504 }, 505 { 506 .name = "ak4641-voice", 507 .id = 1, 508 .playback = { 509 .stream_name = "Voice Playback", 510 .channels_min = 1, 511 .channels_max = 1, 512 .rates = AK4641_RATES_BT, 513 .formats = AK4641_FORMATS, 514 }, 515 .capture = { 516 .stream_name = "Voice Capture", 517 .channels_min = 1, 518 .channels_max = 1, 519 .rates = AK4641_RATES_BT, 520 .formats = AK4641_FORMATS, 521 }, 522 .ops = &ak4641_pcm_dai_ops, 523 .symmetric_rates = 1, 524 }, 525 }; 526 527 static struct snd_soc_codec_driver soc_codec_dev_ak4641 = { 528 .component_driver = { 529 .controls = ak4641_snd_controls, 530 .num_controls = ARRAY_SIZE(ak4641_snd_controls), 531 .dapm_widgets = ak4641_dapm_widgets, 532 .num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets), 533 .dapm_routes = ak4641_audio_map, 534 .num_dapm_routes = ARRAY_SIZE(ak4641_audio_map), 535 }, 536 .set_bias_level = ak4641_set_bias_level, 537 .suspend_bias_off = true, 538 }; 539 540 static const struct regmap_config ak4641_regmap = { 541 .reg_bits = 8, 542 .val_bits = 8, 543 544 .max_register = AK4641_BTIF, 545 .reg_defaults = ak4641_reg_defaults, 546 .num_reg_defaults = ARRAY_SIZE(ak4641_reg_defaults), 547 .cache_type = REGCACHE_RBTREE, 548 }; 549 550 static int ak4641_i2c_probe(struct i2c_client *i2c, 551 const struct i2c_device_id *id) 552 { 553 struct ak4641_platform_data *pdata = i2c->dev.platform_data; 554 struct ak4641_priv *ak4641; 555 int ret; 556 557 ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv), 558 GFP_KERNEL); 559 if (!ak4641) 560 return -ENOMEM; 561 562 ak4641->regmap = devm_regmap_init_i2c(i2c, &ak4641_regmap); 563 if (IS_ERR(ak4641->regmap)) 564 return PTR_ERR(ak4641->regmap); 565 566 if (pdata) { 567 if (gpio_is_valid(pdata->gpio_power)) { 568 ret = gpio_request_one(pdata->gpio_power, 569 GPIOF_OUT_INIT_LOW, "ak4641 power"); 570 if (ret) 571 goto err_out; 572 } 573 if (gpio_is_valid(pdata->gpio_npdn)) { 574 ret = gpio_request_one(pdata->gpio_npdn, 575 GPIOF_OUT_INIT_LOW, "ak4641 npdn"); 576 if (ret) 577 goto err_gpio; 578 579 udelay(1); /* > 150 ns */ 580 gpio_set_value(pdata->gpio_npdn, 1); 581 } 582 } 583 584 i2c_set_clientdata(i2c, ak4641); 585 586 ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641, 587 ak4641_dai, ARRAY_SIZE(ak4641_dai)); 588 if (ret != 0) 589 goto err_gpio2; 590 591 return 0; 592 593 err_gpio2: 594 if (pdata) { 595 if (gpio_is_valid(pdata->gpio_power)) 596 gpio_set_value(pdata->gpio_power, 0); 597 if (gpio_is_valid(pdata->gpio_npdn)) 598 gpio_free(pdata->gpio_npdn); 599 } 600 err_gpio: 601 if (pdata && gpio_is_valid(pdata->gpio_power)) 602 gpio_free(pdata->gpio_power); 603 err_out: 604 return ret; 605 } 606 607 static int ak4641_i2c_remove(struct i2c_client *i2c) 608 { 609 struct ak4641_platform_data *pdata = i2c->dev.platform_data; 610 611 snd_soc_unregister_codec(&i2c->dev); 612 613 if (pdata) { 614 if (gpio_is_valid(pdata->gpio_power)) { 615 gpio_set_value(pdata->gpio_power, 0); 616 gpio_free(pdata->gpio_power); 617 } 618 if (gpio_is_valid(pdata->gpio_npdn)) 619 gpio_free(pdata->gpio_npdn); 620 } 621 622 return 0; 623 } 624 625 static const struct i2c_device_id ak4641_i2c_id[] = { 626 { "ak4641", 0 }, 627 { } 628 }; 629 MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id); 630 631 static struct i2c_driver ak4641_i2c_driver = { 632 .driver = { 633 .name = "ak4641", 634 }, 635 .probe = ak4641_i2c_probe, 636 .remove = ak4641_i2c_remove, 637 .id_table = ak4641_i2c_id, 638 }; 639 640 module_i2c_driver(ak4641_i2c_driver); 641 642 MODULE_DESCRIPTION("SoC AK4641 driver"); 643 MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>"); 644 MODULE_LICENSE("GPL"); 645