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/slab.h> 21 #include <sound/core.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/initval.h> 26 #include <sound/tlv.h> 27 #include <sound/ak4641.h> 28 29 #include "ak4641.h" 30 31 /* codec private data */ 32 struct ak4641_priv { 33 unsigned int sysclk; 34 int deemph; 35 int playback_fs; 36 }; 37 38 /* 39 * ak4641 register cache 40 */ 41 static const u8 ak4641_reg[AK4641_CACHEREGNUM] = { 42 0x00, 0x80, 0x00, 0x80, 43 0x02, 0x00, 0x11, 0x05, 44 0x00, 0x00, 0x36, 0x10, 45 0x00, 0x00, 0x57, 0x00, 46 0x88, 0x88, 0x08, 0x08 47 }; 48 49 static const int deemph_settings[] = {44100, 0, 48000, 32000}; 50 51 static int ak4641_set_deemph(struct snd_soc_codec *codec) 52 { 53 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 54 int i, best = 0; 55 56 for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) { 57 /* if deemphasis is on, select the nearest available rate */ 58 if (ak4641->deemph && deemph_settings[i] != 0 && 59 abs(deemph_settings[i] - ak4641->playback_fs) < 60 abs(deemph_settings[best] - ak4641->playback_fs)) 61 best = i; 62 63 if (!ak4641->deemph && deemph_settings[i] == 0) 64 best = i; 65 } 66 67 dev_dbg(codec->dev, "Set deemphasis %d\n", best); 68 69 return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best); 70 } 71 72 static int ak4641_put_deemph(struct snd_kcontrol *kcontrol, 73 struct snd_ctl_elem_value *ucontrol) 74 { 75 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 76 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 77 int deemph = ucontrol->value.enumerated.item[0]; 78 79 if (deemph > 1) 80 return -EINVAL; 81 82 ak4641->deemph = deemph; 83 84 return ak4641_set_deemph(codec); 85 } 86 87 static int ak4641_get_deemph(struct snd_kcontrol *kcontrol, 88 struct snd_ctl_elem_value *ucontrol) 89 { 90 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 91 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 92 93 ucontrol->value.enumerated.item[0] = ak4641->deemph; 94 return 0; 95 }; 96 97 static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"}; 98 static const char *ak4641_hp_out[] = {"Stereo", "Mono"}; 99 static const char *ak4641_mic_select[] = {"Internal", "External"}; 100 static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"}; 101 102 103 static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0); 104 static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0); 105 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0); 106 static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0); 107 static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0); 108 static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0); 109 static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0); 110 static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0); 111 static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0); 112 113 114 static const struct soc_enum ak4641_mono_out_enum = 115 SOC_ENUM_SINGLE(AK4641_SIG1, 6, 2, ak4641_mono_out); 116 static const struct soc_enum ak4641_hp_out_enum = 117 SOC_ENUM_SINGLE(AK4641_MODE2, 2, 2, ak4641_hp_out); 118 static const struct soc_enum ak4641_mic_select_enum = 119 SOC_ENUM_SINGLE(AK4641_MIC, 1, 2, ak4641_mic_select); 120 static const struct soc_enum ak4641_mic_or_dac_enum = 121 SOC_ENUM_SINGLE(AK4641_BTIF, 4, 2, ak4641_mic_or_dac); 122 123 static const struct snd_kcontrol_new ak4641_snd_controls[] = { 124 SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum), 125 SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1, 126 mono_gain_tlv), 127 SOC_ENUM("Headphone Output", ak4641_hp_out_enum), 128 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, 129 ak4641_get_deemph, ak4641_put_deemph), 130 131 SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv), 132 133 SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0), 134 SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0), 135 SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0), 136 137 SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0), 138 139 SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv), 140 SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0), 141 SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0), 142 143 SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv), 144 145 SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT, 146 AK4641_RATT, 0, 255, 1, master_tlv), 147 148 SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv), 149 150 SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0), 151 SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv), 152 SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv), 153 SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv), 154 SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv), 155 SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv), 156 }; 157 158 /* Mono 1 Mixer */ 159 static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = { 160 SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0, 161 mic_mono_sidetone_tlv), 162 SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0), 163 SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0), 164 }; 165 166 /* Stereo Mixer */ 167 static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = { 168 SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0, 169 mic_stereo_sidetone_tlv), 170 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0), 171 SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0), 172 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0), 173 }; 174 175 /* Input Mixer */ 176 static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = { 177 SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0), 178 SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0), 179 }; 180 181 /* Mic mux */ 182 static const struct snd_kcontrol_new ak4641_mic_mux_control = 183 SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum); 184 185 /* Input mux */ 186 static const struct snd_kcontrol_new ak4641_input_mux_control = 187 SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum); 188 189 /* mono 2 switch */ 190 static const struct snd_kcontrol_new ak4641_mono2_control = 191 SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0); 192 193 /* ak4641 dapm widgets */ 194 static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = { 195 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0, 196 &ak4641_stereo_mixer_controls[0], 197 ARRAY_SIZE(ak4641_stereo_mixer_controls)), 198 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0, 199 &ak4641_mono1_mixer_controls[0], 200 ARRAY_SIZE(ak4641_mono1_mixer_controls)), 201 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, 202 &ak4641_input_mixer_controls[0], 203 ARRAY_SIZE(ak4641_input_mixer_controls)), 204 SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0, 205 &ak4641_mic_mux_control), 206 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, 207 &ak4641_input_mux_control), 208 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0, 209 &ak4641_mono2_control), 210 211 SND_SOC_DAPM_OUTPUT("LOUT"), 212 SND_SOC_DAPM_OUTPUT("ROUT"), 213 SND_SOC_DAPM_OUTPUT("MOUT1"), 214 SND_SOC_DAPM_OUTPUT("MOUT2"), 215 SND_SOC_DAPM_OUTPUT("MICOUT"), 216 217 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0), 218 SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0), 219 SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0), 220 SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0), 221 SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0), 222 223 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0), 224 SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0), 225 226 SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0), 227 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0), 228 229 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0), 230 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0), 231 232 SND_SOC_DAPM_INPUT("MICIN"), 233 SND_SOC_DAPM_INPUT("MICEXT"), 234 SND_SOC_DAPM_INPUT("AUX"), 235 SND_SOC_DAPM_INPUT("AIN"), 236 }; 237 238 static const struct snd_soc_dapm_route ak4641_audio_map[] = { 239 /* Stereo Mixer */ 240 {"Stereo Mixer", "Playback Switch", "DAC"}, 241 {"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"}, 242 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"}, 243 244 /* Mono 1 Mixer */ 245 {"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"}, 246 {"Mono1 Mixer", "Mono Playback Switch", "DAC"}, 247 248 /* Mic */ 249 {"Mic", NULL, "AIN"}, 250 {"Mic Mux", "Internal", "Mic Int Bias"}, 251 {"Mic Mux", "External", "Mic Ext Bias"}, 252 {"Mic Int Bias", NULL, "MICIN"}, 253 {"Mic Ext Bias", NULL, "MICEXT"}, 254 {"MICOUT", NULL, "Mic Mux"}, 255 256 /* Input Mux */ 257 {"Input Mux", "Microphone", "Mic"}, 258 {"Input Mux", "Voice DAC", "Voice DAC"}, 259 260 /* Line Out */ 261 {"LOUT", NULL, "Line Out"}, 262 {"ROUT", NULL, "Line Out"}, 263 {"Line Out", NULL, "Stereo Mixer"}, 264 265 /* Mono 1 Out */ 266 {"MOUT1", NULL, "Mono Out"}, 267 {"Mono Out", NULL, "Mono1 Mixer"}, 268 269 /* Mono 2 Out */ 270 {"MOUT2", NULL, "Mono 2 Enable"}, 271 {"Mono 2 Enable", "Switch", "Mono Out 2"}, 272 {"Mono Out 2", NULL, "Stereo Mixer"}, 273 274 {"Voice ADC", NULL, "Mono 2 Enable"}, 275 276 /* Aux In */ 277 {"AUX In", NULL, "AUX"}, 278 279 /* ADC */ 280 {"ADC", NULL, "Input Mixer"}, 281 {"Input Mixer", "Mic Capture Switch", "Mic"}, 282 {"Input Mixer", "Aux Capture Switch", "AUX In"}, 283 }; 284 285 static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai, 286 int clk_id, unsigned int freq, int dir) 287 { 288 struct snd_soc_codec *codec = codec_dai->codec; 289 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 290 291 ak4641->sysclk = freq; 292 return 0; 293 } 294 295 static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream, 296 struct snd_pcm_hw_params *params, 297 struct snd_soc_dai *dai) 298 { 299 struct snd_soc_codec *codec = dai->codec; 300 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); 301 int rate = params_rate(params), fs = 256; 302 u8 mode2; 303 304 if (rate) 305 fs = ak4641->sysclk / rate; 306 else 307 return -EINVAL; 308 309 /* set fs */ 310 switch (fs) { 311 case 1024: 312 mode2 = (0x2 << 5); 313 break; 314 case 512: 315 mode2 = (0x1 << 5); 316 break; 317 case 256: 318 mode2 = (0x0 << 5); 319 break; 320 default: 321 dev_err(codec->dev, "Error: unsupported fs=%d\n", fs); 322 return -EINVAL; 323 } 324 325 snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2); 326 327 /* Update de-emphasis filter for the new rate */ 328 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 329 ak4641->playback_fs = rate; 330 ak4641_set_deemph(codec); 331 }; 332 333 return 0; 334 } 335 336 static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai, 337 unsigned int fmt) 338 { 339 struct snd_soc_codec *codec = codec_dai->codec; 340 u8 btif; 341 int ret; 342 343 /* interface format */ 344 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 345 case SND_SOC_DAIFMT_I2S: 346 btif = (0x3 << 5); 347 break; 348 case SND_SOC_DAIFMT_LEFT_J: 349 btif = (0x2 << 5); 350 break; 351 case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */ 352 btif = (0x0 << 5); 353 break; 354 case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */ 355 btif = (0x1 << 5); 356 break; 357 default: 358 return -EINVAL; 359 } 360 361 ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif); 362 if (ret < 0) 363 return ret; 364 365 return 0; 366 } 367 368 static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai, 369 unsigned int fmt) 370 { 371 struct snd_soc_codec *codec = codec_dai->codec; 372 u8 mode1 = 0; 373 374 /* interface format */ 375 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 376 case SND_SOC_DAIFMT_I2S: 377 mode1 = 0x02; 378 break; 379 case SND_SOC_DAIFMT_LEFT_J: 380 mode1 = 0x01; 381 break; 382 default: 383 return -EINVAL; 384 } 385 386 return snd_soc_write(codec, AK4641_MODE1, mode1); 387 } 388 389 static int ak4641_mute(struct snd_soc_dai *dai, int mute) 390 { 391 struct snd_soc_codec *codec = dai->codec; 392 393 return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0); 394 } 395 396 static int ak4641_set_bias_level(struct snd_soc_codec *codec, 397 enum snd_soc_bias_level level) 398 { 399 struct ak4641_platform_data *pdata = codec->dev->platform_data; 400 int ret; 401 402 switch (level) { 403 case SND_SOC_BIAS_ON: 404 /* unmute */ 405 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0); 406 break; 407 case SND_SOC_BIAS_PREPARE: 408 /* mute */ 409 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20); 410 break; 411 case SND_SOC_BIAS_STANDBY: 412 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 413 if (pdata && gpio_is_valid(pdata->gpio_power)) 414 gpio_set_value(pdata->gpio_power, 1); 415 mdelay(1); 416 if (pdata && gpio_is_valid(pdata->gpio_npdn)) 417 gpio_set_value(pdata->gpio_npdn, 1); 418 mdelay(1); 419 420 ret = snd_soc_cache_sync(codec); 421 if (ret) { 422 dev_err(codec->dev, 423 "Failed to sync cache: %d\n", ret); 424 return ret; 425 } 426 } 427 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80); 428 snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0); 429 break; 430 case SND_SOC_BIAS_OFF: 431 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0); 432 if (pdata && gpio_is_valid(pdata->gpio_npdn)) 433 gpio_set_value(pdata->gpio_npdn, 0); 434 if (pdata && gpio_is_valid(pdata->gpio_power)) 435 gpio_set_value(pdata->gpio_power, 0); 436 codec->cache_sync = 1; 437 break; 438 } 439 codec->dapm.bias_level = level; 440 return 0; 441 } 442 443 #define AK4641_RATES (SNDRV_PCM_RATE_8000_48000) 444 #define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 445 SNDRV_PCM_RATE_16000) 446 #define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) 447 448 static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = { 449 .hw_params = ak4641_i2s_hw_params, 450 .set_fmt = ak4641_i2s_set_dai_fmt, 451 .digital_mute = ak4641_mute, 452 .set_sysclk = ak4641_set_dai_sysclk, 453 }; 454 455 static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = { 456 .hw_params = NULL, /* rates are controlled by BT chip */ 457 .set_fmt = ak4641_pcm_set_dai_fmt, 458 .digital_mute = ak4641_mute, 459 .set_sysclk = ak4641_set_dai_sysclk, 460 }; 461 462 static struct snd_soc_dai_driver ak4641_dai[] = { 463 { 464 .name = "ak4641-hifi", 465 .id = 1, 466 .playback = { 467 .stream_name = "HiFi Playback", 468 .channels_min = 1, 469 .channels_max = 2, 470 .rates = AK4641_RATES, 471 .formats = AK4641_FORMATS, 472 }, 473 .capture = { 474 .stream_name = "HiFi Capture", 475 .channels_min = 1, 476 .channels_max = 2, 477 .rates = AK4641_RATES, 478 .formats = AK4641_FORMATS, 479 }, 480 .ops = &ak4641_i2s_dai_ops, 481 .symmetric_rates = 1, 482 }, 483 { 484 .name = "ak4641-voice", 485 .id = 1, 486 .playback = { 487 .stream_name = "Voice Playback", 488 .channels_min = 1, 489 .channels_max = 1, 490 .rates = AK4641_RATES_BT, 491 .formats = AK4641_FORMATS, 492 }, 493 .capture = { 494 .stream_name = "Voice Capture", 495 .channels_min = 1, 496 .channels_max = 1, 497 .rates = AK4641_RATES_BT, 498 .formats = AK4641_FORMATS, 499 }, 500 .ops = &ak4641_pcm_dai_ops, 501 .symmetric_rates = 1, 502 }, 503 }; 504 505 static int ak4641_suspend(struct snd_soc_codec *codec) 506 { 507 ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF); 508 return 0; 509 } 510 511 static int ak4641_resume(struct snd_soc_codec *codec) 512 { 513 ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 514 return 0; 515 } 516 517 static int ak4641_probe(struct snd_soc_codec *codec) 518 { 519 int ret; 520 521 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C); 522 if (ret != 0) { 523 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 524 return ret; 525 } 526 527 /* power on device */ 528 ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 529 530 return 0; 531 } 532 533 static int ak4641_remove(struct snd_soc_codec *codec) 534 { 535 ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF); 536 537 return 0; 538 } 539 540 541 static struct snd_soc_codec_driver soc_codec_dev_ak4641 = { 542 .probe = ak4641_probe, 543 .remove = ak4641_remove, 544 .suspend = ak4641_suspend, 545 .resume = ak4641_resume, 546 .controls = ak4641_snd_controls, 547 .num_controls = ARRAY_SIZE(ak4641_snd_controls), 548 .dapm_widgets = ak4641_dapm_widgets, 549 .num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets), 550 .dapm_routes = ak4641_audio_map, 551 .num_dapm_routes = ARRAY_SIZE(ak4641_audio_map), 552 .set_bias_level = ak4641_set_bias_level, 553 .reg_cache_size = ARRAY_SIZE(ak4641_reg), 554 .reg_word_size = sizeof(u8), 555 .reg_cache_default = ak4641_reg, 556 .reg_cache_step = 1, 557 }; 558 559 560 static int ak4641_i2c_probe(struct i2c_client *i2c, 561 const struct i2c_device_id *id) 562 { 563 struct ak4641_platform_data *pdata = i2c->dev.platform_data; 564 struct ak4641_priv *ak4641; 565 int ret; 566 567 ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv), 568 GFP_KERNEL); 569 if (!ak4641) 570 return -ENOMEM; 571 572 if (pdata) { 573 if (gpio_is_valid(pdata->gpio_power)) { 574 ret = gpio_request_one(pdata->gpio_power, 575 GPIOF_OUT_INIT_LOW, "ak4641 power"); 576 if (ret) 577 goto err_out; 578 } 579 if (gpio_is_valid(pdata->gpio_npdn)) { 580 ret = gpio_request_one(pdata->gpio_npdn, 581 GPIOF_OUT_INIT_LOW, "ak4641 npdn"); 582 if (ret) 583 goto err_gpio; 584 585 udelay(1); /* > 150 ns */ 586 gpio_set_value(pdata->gpio_npdn, 1); 587 } 588 } 589 590 i2c_set_clientdata(i2c, ak4641); 591 592 ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641, 593 ak4641_dai, ARRAY_SIZE(ak4641_dai)); 594 if (ret != 0) 595 goto err_gpio2; 596 597 return 0; 598 599 err_gpio2: 600 if (pdata) { 601 if (gpio_is_valid(pdata->gpio_power)) 602 gpio_set_value(pdata->gpio_power, 0); 603 if (gpio_is_valid(pdata->gpio_npdn)) 604 gpio_free(pdata->gpio_npdn); 605 } 606 err_gpio: 607 if (pdata && gpio_is_valid(pdata->gpio_power)) 608 gpio_free(pdata->gpio_power); 609 err_out: 610 return ret; 611 } 612 613 static int ak4641_i2c_remove(struct i2c_client *i2c) 614 { 615 struct ak4641_platform_data *pdata = i2c->dev.platform_data; 616 617 snd_soc_unregister_codec(&i2c->dev); 618 619 if (pdata) { 620 if (gpio_is_valid(pdata->gpio_power)) { 621 gpio_set_value(pdata->gpio_power, 0); 622 gpio_free(pdata->gpio_power); 623 } 624 if (gpio_is_valid(pdata->gpio_npdn)) 625 gpio_free(pdata->gpio_npdn); 626 } 627 628 return 0; 629 } 630 631 static const struct i2c_device_id ak4641_i2c_id[] = { 632 { "ak4641", 0 }, 633 { } 634 }; 635 MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id); 636 637 static struct i2c_driver ak4641_i2c_driver = { 638 .driver = { 639 .name = "ak4641", 640 .owner = THIS_MODULE, 641 }, 642 .probe = ak4641_i2c_probe, 643 .remove = ak4641_i2c_remove, 644 .id_table = ak4641_i2c_id, 645 }; 646 647 module_i2c_driver(ak4641_i2c_driver); 648 649 MODULE_DESCRIPTION("SoC AK4641 driver"); 650 MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>"); 651 MODULE_LICENSE("GPL"); 652