1 /* 2 * ALSA SoC TLV320AIC23 codec driver 3 * 4 * Author: Arun KS, <arunks@mistralsolutions.com> 5 * Copyright: (C) 2008 Mistral Solutions Pvt Ltd., 6 * 7 * Based on sound/soc/codecs/wm8731.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 * Notes: 14 * The AIC23 is a driver for a low power stereo audio 15 * codec tlv320aic23 16 * 17 * The machine layer should disable unsupported inputs/outputs by 18 * snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc. 19 */ 20 21 #include <linux/module.h> 22 #include <linux/moduleparam.h> 23 #include <linux/init.h> 24 #include <linux/delay.h> 25 #include <linux/pm.h> 26 #include <linux/i2c.h> 27 #include <linux/slab.h> 28 #include <sound/core.h> 29 #include <sound/pcm.h> 30 #include <sound/pcm_params.h> 31 #include <sound/soc.h> 32 #include <sound/tlv.h> 33 #include <sound/initval.h> 34 35 #include "tlv320aic23.h" 36 37 #define AIC23_VERSION "0.1" 38 39 /* 40 * AIC23 register cache 41 */ 42 static const u16 tlv320aic23_reg[] = { 43 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */ 44 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */ 45 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */ 46 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */ 47 }; 48 49 static const char *rec_src_text[] = { "Line", "Mic" }; 50 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 51 52 static const struct soc_enum rec_src_enum = 53 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 54 55 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls = 56 SOC_DAPM_ENUM("Input Select", rec_src_enum); 57 58 static const struct soc_enum tlv320aic23_rec_src = 59 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 60 static const struct soc_enum tlv320aic23_deemph = 61 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text); 62 63 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); 64 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); 65 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); 66 67 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, 68 struct snd_ctl_elem_value *ucontrol) 69 { 70 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 71 u16 val, reg; 72 73 val = (ucontrol->value.integer.value[0] & 0x07); 74 75 /* linear conversion to userspace 76 * 000 = -6db 77 * 001 = -9db 78 * 010 = -12db 79 * 011 = -18db (Min) 80 * 100 = 0db (Max) 81 */ 82 val = (val >= 4) ? 4 : (3 - val); 83 84 reg = snd_soc_read(codec, TLV320AIC23_ANLG) & (~0x1C0); 85 snd_soc_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); 86 87 return 0; 88 } 89 90 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, 91 struct snd_ctl_elem_value *ucontrol) 92 { 93 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 94 u16 val; 95 96 val = snd_soc_read(codec, TLV320AIC23_ANLG) & (0x1C0); 97 val = val >> 6; 98 val = (val >= 4) ? 4 : (3 - val); 99 ucontrol->value.integer.value[0] = val; 100 return 0; 101 102 } 103 104 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { 105 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, 106 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), 107 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), 108 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, 109 TLV320AIC23_RINVOL, 7, 1, 0), 110 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, 111 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), 112 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), 113 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), 114 SOC_SINGLE_EXT_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0, 115 snd_soc_tlv320aic23_get_volsw, 116 snd_soc_tlv320aic23_put_volsw, sidetone_vol_tlv), 117 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), 118 }; 119 120 /* PGA Mixer controls for Line and Mic switch */ 121 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 122 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 123 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 124 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 125 }; 126 127 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 128 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 129 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 130 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 131 &tlv320aic23_rec_src_mux_controls), 132 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 133 &tlv320aic23_output_mixer_controls[0], 134 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 135 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 136 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 137 138 SND_SOC_DAPM_OUTPUT("LHPOUT"), 139 SND_SOC_DAPM_OUTPUT("RHPOUT"), 140 SND_SOC_DAPM_OUTPUT("LOUT"), 141 SND_SOC_DAPM_OUTPUT("ROUT"), 142 143 SND_SOC_DAPM_INPUT("LLINEIN"), 144 SND_SOC_DAPM_INPUT("RLINEIN"), 145 146 SND_SOC_DAPM_INPUT("MICIN"), 147 }; 148 149 static const struct snd_soc_dapm_route tlv320aic23_intercon[] = { 150 /* Output Mixer */ 151 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 152 {"Output Mixer", "Playback Switch", "DAC"}, 153 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 154 155 /* Outputs */ 156 {"RHPOUT", NULL, "Output Mixer"}, 157 {"LHPOUT", NULL, "Output Mixer"}, 158 {"LOUT", NULL, "Output Mixer"}, 159 {"ROUT", NULL, "Output Mixer"}, 160 161 /* Inputs */ 162 {"Line Input", "NULL", "LLINEIN"}, 163 {"Line Input", "NULL", "RLINEIN"}, 164 165 {"Mic Input", "NULL", "MICIN"}, 166 167 /* input mux */ 168 {"Capture Source", "Line", "Line Input"}, 169 {"Capture Source", "Mic", "Mic Input"}, 170 {"ADC", NULL, "Capture Source"}, 171 172 }; 173 174 /* AIC23 driver data */ 175 struct aic23 { 176 enum snd_soc_control_type control_type; 177 int mclk; 178 int requested_adc; 179 int requested_dac; 180 }; 181 182 /* 183 * Common Crystals used 184 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k 185 * 12.0000 Mhz /125 = *96k /136 = 88.235K 186 * 12.2880 Mhz /128 = *96k /192 = 64k 187 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k 188 * 18.4320 Mhz /128 = 144k /192 = *96k 189 */ 190 191 /* 192 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 193 * USB BOSR 0-250/2 = 125, 1-272/2 = 136 194 */ 195 static const int bosr_usb_divisor_table[] = { 196 128, 125, 192, 136 197 }; 198 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) 199 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) 200 static const unsigned short sr_valid_mask[] = { 201 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ 202 LOWER_GROUP, /* Usb, bosr - 0*/ 203 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 204 UPPER_GROUP, /* Usb, bosr - 1*/ 205 }; 206 /* 207 * Every divisor is a factor of 11*12 208 */ 209 #define SR_MULT (11*12) 210 #define A(x) (SR_MULT/x) 211 static const unsigned char sr_adc_mult_table[] = { 212 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1), 213 A(2), A(2), A(11), A(11), 0, 0, 0, A(1) 214 }; 215 static const unsigned char sr_dac_mult_table[] = { 216 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1), 217 A(2), A(11), A(2), A(11), 0, 0, 0, A(1) 218 }; 219 220 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, 221 int dac, int dac_l, int dac_h, int need_dac) 222 { 223 if ((adc >= adc_l) && (adc <= adc_h) && 224 (dac >= dac_l) && (dac <= dac_h)) { 225 int diff_adc = need_adc - adc; 226 int diff_dac = need_dac - dac; 227 return abs(diff_adc) + abs(diff_dac); 228 } 229 return UINT_MAX; 230 } 231 232 static int find_rate(int mclk, u32 need_adc, u32 need_dac) 233 { 234 int i, j; 235 int best_i = -1; 236 int best_j = -1; 237 int best_div = 0; 238 unsigned best_score = UINT_MAX; 239 int adc_l, adc_h, dac_l, dac_h; 240 241 need_adc *= SR_MULT; 242 need_dac *= SR_MULT; 243 /* 244 * rates given are +/- 1/32 245 */ 246 adc_l = need_adc - (need_adc >> 5); 247 adc_h = need_adc + (need_adc >> 5); 248 dac_l = need_dac - (need_dac >> 5); 249 dac_h = need_dac + (need_dac >> 5); 250 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { 251 int base = mclk / bosr_usb_divisor_table[i]; 252 int mask = sr_valid_mask[i]; 253 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); 254 j++, mask >>= 1) { 255 int adc; 256 int dac; 257 int score; 258 if ((mask & 1) == 0) 259 continue; 260 adc = base * sr_adc_mult_table[j]; 261 dac = base * sr_dac_mult_table[j]; 262 score = get_score(adc, adc_l, adc_h, need_adc, 263 dac, dac_l, dac_h, need_dac); 264 if (best_score > score) { 265 best_score = score; 266 best_i = i; 267 best_j = j; 268 best_div = 0; 269 } 270 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 271 (dac >> 1), dac_l, dac_h, need_dac); 272 /* prefer to have a /2 */ 273 if ((score != UINT_MAX) && (best_score >= score)) { 274 best_score = score; 275 best_i = i; 276 best_j = j; 277 best_div = 1; 278 } 279 } 280 } 281 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 282 } 283 284 #ifdef DEBUG 285 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 286 u32 *sample_rate_adc, u32 *sample_rate_dac) 287 { 288 int src = snd_soc_read(codec, TLV320AIC23_SRATE); 289 int sr = (src >> 2) & 0x0f; 290 int val = (mclk / bosr_usb_divisor_table[src & 3]); 291 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 292 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 293 if (src & TLV320AIC23_CLKIN_HALF) { 294 adc >>= 1; 295 dac >>= 1; 296 } 297 *sample_rate_adc = adc; 298 *sample_rate_dac = dac; 299 } 300 #endif 301 302 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 303 u32 sample_rate_adc, u32 sample_rate_dac) 304 { 305 /* Search for the right sample rate */ 306 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 307 if (data < 0) { 308 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 309 __func__, sample_rate_adc, sample_rate_dac); 310 return -EINVAL; 311 } 312 snd_soc_write(codec, TLV320AIC23_SRATE, data); 313 #ifdef DEBUG 314 { 315 u32 adc, dac; 316 get_current_sample_rates(codec, mclk, &adc, &dac); 317 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 318 adc, dac, data); 319 } 320 #endif 321 return 0; 322 } 323 324 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 325 struct snd_pcm_hw_params *params, 326 struct snd_soc_dai *dai) 327 { 328 struct snd_soc_pcm_runtime *rtd = substream->private_data; 329 struct snd_soc_codec *codec = rtd->codec; 330 u16 iface_reg; 331 int ret; 332 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 333 u32 sample_rate_adc = aic23->requested_adc; 334 u32 sample_rate_dac = aic23->requested_dac; 335 u32 sample_rate = params_rate(params); 336 337 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 338 aic23->requested_dac = sample_rate_dac = sample_rate; 339 if (!sample_rate_adc) 340 sample_rate_adc = sample_rate; 341 } else { 342 aic23->requested_adc = sample_rate_adc = sample_rate; 343 if (!sample_rate_dac) 344 sample_rate_dac = sample_rate; 345 } 346 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 347 sample_rate_dac); 348 if (ret < 0) 349 return ret; 350 351 iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 352 353 switch (params_format(params)) { 354 case SNDRV_PCM_FORMAT_S16_LE: 355 break; 356 case SNDRV_PCM_FORMAT_S20_3LE: 357 iface_reg |= (0x01 << 2); 358 break; 359 case SNDRV_PCM_FORMAT_S24_LE: 360 iface_reg |= (0x02 << 2); 361 break; 362 case SNDRV_PCM_FORMAT_S32_LE: 363 iface_reg |= (0x03 << 2); 364 break; 365 } 366 snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 367 368 return 0; 369 } 370 371 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, 372 struct snd_soc_dai *dai) 373 { 374 struct snd_soc_pcm_runtime *rtd = substream->private_data; 375 struct snd_soc_codec *codec = rtd->codec; 376 377 /* set active */ 378 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0001); 379 380 return 0; 381 } 382 383 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, 384 struct snd_soc_dai *dai) 385 { 386 struct snd_soc_pcm_runtime *rtd = substream->private_data; 387 struct snd_soc_codec *codec = rtd->codec; 388 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 389 390 /* deactivate */ 391 if (!codec->active) { 392 udelay(50); 393 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0); 394 } 395 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 396 aic23->requested_dac = 0; 397 else 398 aic23->requested_adc = 0; 399 } 400 401 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 402 { 403 struct snd_soc_codec *codec = dai->codec; 404 u16 reg; 405 406 reg = snd_soc_read(codec, TLV320AIC23_DIGT); 407 if (mute) 408 reg |= TLV320AIC23_DACM_MUTE; 409 410 else 411 reg &= ~TLV320AIC23_DACM_MUTE; 412 413 snd_soc_write(codec, TLV320AIC23_DIGT, reg); 414 415 return 0; 416 } 417 418 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 419 unsigned int fmt) 420 { 421 struct snd_soc_codec *codec = codec_dai->codec; 422 u16 iface_reg; 423 424 iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 425 426 /* set master/slave audio interface */ 427 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 428 case SND_SOC_DAIFMT_CBM_CFM: 429 iface_reg |= TLV320AIC23_MS_MASTER; 430 break; 431 case SND_SOC_DAIFMT_CBS_CFS: 432 iface_reg &= ~TLV320AIC23_MS_MASTER; 433 break; 434 default: 435 return -EINVAL; 436 437 } 438 439 /* interface format */ 440 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 441 case SND_SOC_DAIFMT_I2S: 442 iface_reg |= TLV320AIC23_FOR_I2S; 443 break; 444 case SND_SOC_DAIFMT_DSP_A: 445 iface_reg |= TLV320AIC23_LRP_ON; 446 case SND_SOC_DAIFMT_DSP_B: 447 iface_reg |= TLV320AIC23_FOR_DSP; 448 break; 449 case SND_SOC_DAIFMT_RIGHT_J: 450 break; 451 case SND_SOC_DAIFMT_LEFT_J: 452 iface_reg |= TLV320AIC23_FOR_LJUST; 453 break; 454 default: 455 return -EINVAL; 456 457 } 458 459 snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 460 461 return 0; 462 } 463 464 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 465 int clk_id, unsigned int freq, int dir) 466 { 467 struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai); 468 aic23->mclk = freq; 469 return 0; 470 } 471 472 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 473 enum snd_soc_bias_level level) 474 { 475 u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0x17f; 476 477 switch (level) { 478 case SND_SOC_BIAS_ON: 479 /* vref/mid, osc on, dac unmute */ 480 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \ 481 TLV320AIC23_DAC_OFF); 482 snd_soc_write(codec, TLV320AIC23_PWR, reg); 483 break; 484 case SND_SOC_BIAS_PREPARE: 485 break; 486 case SND_SOC_BIAS_STANDBY: 487 /* everything off except vref/vmid, */ 488 snd_soc_write(codec, TLV320AIC23_PWR, 489 reg | TLV320AIC23_CLK_OFF); 490 break; 491 case SND_SOC_BIAS_OFF: 492 /* everything off, dac mute, inactive */ 493 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0); 494 snd_soc_write(codec, TLV320AIC23_PWR, 0x1ff); 495 break; 496 } 497 codec->dapm.bias_level = level; 498 return 0; 499 } 500 501 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 502 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 503 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 504 505 static const struct snd_soc_dai_ops tlv320aic23_dai_ops = { 506 .prepare = tlv320aic23_pcm_prepare, 507 .hw_params = tlv320aic23_hw_params, 508 .shutdown = tlv320aic23_shutdown, 509 .digital_mute = tlv320aic23_mute, 510 .set_fmt = tlv320aic23_set_dai_fmt, 511 .set_sysclk = tlv320aic23_set_dai_sysclk, 512 }; 513 514 static struct snd_soc_dai_driver tlv320aic23_dai = { 515 .name = "tlv320aic23-hifi", 516 .playback = { 517 .stream_name = "Playback", 518 .channels_min = 2, 519 .channels_max = 2, 520 .rates = AIC23_RATES, 521 .formats = AIC23_FORMATS,}, 522 .capture = { 523 .stream_name = "Capture", 524 .channels_min = 2, 525 .channels_max = 2, 526 .rates = AIC23_RATES, 527 .formats = AIC23_FORMATS,}, 528 .ops = &tlv320aic23_dai_ops, 529 }; 530 531 static int tlv320aic23_suspend(struct snd_soc_codec *codec) 532 { 533 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 534 535 return 0; 536 } 537 538 static int tlv320aic23_resume(struct snd_soc_codec *codec) 539 { 540 snd_soc_cache_sync(codec); 541 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 542 543 return 0; 544 } 545 546 static int tlv320aic23_probe(struct snd_soc_codec *codec) 547 { 548 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 549 int ret; 550 551 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 552 553 ret = snd_soc_codec_set_cache_io(codec, 7, 9, aic23->control_type); 554 if (ret < 0) { 555 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 556 return ret; 557 } 558 559 /* Reset codec */ 560 snd_soc_write(codec, TLV320AIC23_RESET, 0); 561 562 /* Write the register default value to cache for reserved registers, 563 * so the write to the these registers are suppressed by the cache 564 * restore code when it skips writes of default registers. 565 */ 566 snd_soc_cache_write(codec, 0x0A, 0); 567 snd_soc_cache_write(codec, 0x0B, 0); 568 snd_soc_cache_write(codec, 0x0C, 0); 569 snd_soc_cache_write(codec, 0x0D, 0); 570 snd_soc_cache_write(codec, 0x0E, 0); 571 572 /* power on device */ 573 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 574 575 snd_soc_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 576 577 /* Unmute input */ 578 snd_soc_update_bits(codec, TLV320AIC23_LINVOL, 579 TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED); 580 581 snd_soc_update_bits(codec, TLV320AIC23_RINVOL, 582 TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED); 583 584 snd_soc_update_bits(codec, TLV320AIC23_ANLG, 585 TLV320AIC23_BYPASS_ON | TLV320AIC23_MICM_MUTED, 586 0); 587 588 /* Default output volume */ 589 snd_soc_write(codec, TLV320AIC23_LCHNVOL, 590 TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK); 591 snd_soc_write(codec, TLV320AIC23_RCHNVOL, 592 TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK); 593 594 snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x1); 595 596 snd_soc_add_codec_controls(codec, tlv320aic23_snd_controls, 597 ARRAY_SIZE(tlv320aic23_snd_controls)); 598 599 return 0; 600 } 601 602 static int tlv320aic23_remove(struct snd_soc_codec *codec) 603 { 604 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 605 return 0; 606 } 607 608 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = { 609 .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg), 610 .reg_word_size = sizeof(u16), 611 .reg_cache_default = tlv320aic23_reg, 612 .probe = tlv320aic23_probe, 613 .remove = tlv320aic23_remove, 614 .suspend = tlv320aic23_suspend, 615 .resume = tlv320aic23_resume, 616 .set_bias_level = tlv320aic23_set_bias_level, 617 .dapm_widgets = tlv320aic23_dapm_widgets, 618 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), 619 .dapm_routes = tlv320aic23_intercon, 620 .num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon), 621 }; 622 623 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 624 /* 625 * If the i2c layer weren't so broken, we could pass this kind of data 626 * around 627 */ 628 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 629 const struct i2c_device_id *i2c_id) 630 { 631 struct aic23 *aic23; 632 int ret; 633 634 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 635 return -EINVAL; 636 637 aic23 = devm_kzalloc(&i2c->dev, sizeof(struct aic23), GFP_KERNEL); 638 if (aic23 == NULL) 639 return -ENOMEM; 640 641 i2c_set_clientdata(i2c, aic23); 642 aic23->control_type = SND_SOC_I2C; 643 644 ret = snd_soc_register_codec(&i2c->dev, 645 &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1); 646 return ret; 647 } 648 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 649 { 650 snd_soc_unregister_codec(&i2c->dev); 651 return 0; 652 } 653 654 static const struct i2c_device_id tlv320aic23_id[] = { 655 {"tlv320aic23", 0}, 656 {} 657 }; 658 659 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 660 661 static struct i2c_driver tlv320aic23_i2c_driver = { 662 .driver = { 663 .name = "tlv320aic23-codec", 664 }, 665 .probe = tlv320aic23_codec_probe, 666 .remove = __exit_p(tlv320aic23_i2c_remove), 667 .id_table = tlv320aic23_id, 668 }; 669 670 #endif 671 672 static int __init tlv320aic23_modinit(void) 673 { 674 int ret; 675 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 676 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 677 if (ret != 0) { 678 printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n", 679 ret); 680 } 681 #endif 682 return ret; 683 } 684 module_init(tlv320aic23_modinit); 685 686 static void __exit tlv320aic23_exit(void) 687 { 688 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 689 i2c_del_driver(&tlv320aic23_i2c_driver); 690 #endif 691 } 692 module_exit(tlv320aic23_exit); 693 694 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 695 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 696 MODULE_LICENSE("GPL"); 697