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/platform_device.h> 28 #include <linux/slab.h> 29 #include <sound/core.h> 30 #include <sound/pcm.h> 31 #include <sound/pcm_params.h> 32 #include <sound/soc.h> 33 #include <sound/tlv.h> 34 #include <sound/initval.h> 35 36 #include "tlv320aic23.h" 37 38 #define AIC23_VERSION "0.1" 39 40 /* 41 * AIC23 register cache 42 */ 43 static const u16 tlv320aic23_reg[] = { 44 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */ 45 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */ 46 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */ 47 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */ 48 }; 49 50 /* 51 * read tlv320aic23 register cache 52 */ 53 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec 54 *codec, unsigned int reg) 55 { 56 u16 *cache = codec->reg_cache; 57 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 58 return -1; 59 return cache[reg]; 60 } 61 62 /* 63 * write tlv320aic23 register cache 64 */ 65 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec, 66 u8 reg, u16 value) 67 { 68 u16 *cache = codec->reg_cache; 69 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 70 return; 71 cache[reg] = value; 72 } 73 74 /* 75 * write to the tlv320aic23 register space 76 */ 77 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg, 78 unsigned int value) 79 { 80 81 u8 data[2]; 82 83 /* TLV320AIC23 has 7 bit address and 9 bits of data 84 * so we need to switch one data bit into reg and rest 85 * of data into val 86 */ 87 88 if (reg > 9 && reg != 15) { 89 printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg); 90 return -1; 91 } 92 93 data[0] = (reg << 1) | (value >> 8 & 0x01); 94 data[1] = value & 0xff; 95 96 tlv320aic23_write_reg_cache(codec, reg, value); 97 98 if (codec->hw_write(codec->control_data, data, 2) == 2) 99 return 0; 100 101 printk(KERN_ERR "%s cannot write %03x to register R%u\n", __func__, 102 value, reg); 103 104 return -EIO; 105 } 106 107 static const char *rec_src_text[] = { "Line", "Mic" }; 108 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 109 110 static const struct soc_enum rec_src_enum = 111 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 112 113 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls = 114 SOC_DAPM_ENUM("Input Select", rec_src_enum); 115 116 static const struct soc_enum tlv320aic23_rec_src = 117 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 118 static const struct soc_enum tlv320aic23_deemph = 119 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text); 120 121 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); 122 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); 123 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); 124 125 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, 126 struct snd_ctl_elem_value *ucontrol) 127 { 128 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 129 u16 val, reg; 130 131 val = (ucontrol->value.integer.value[0] & 0x07); 132 133 /* linear conversion to userspace 134 * 000 = -6db 135 * 001 = -9db 136 * 010 = -12db 137 * 011 = -18db (Min) 138 * 100 = 0db (Max) 139 */ 140 val = (val >= 4) ? 4 : (3 - val); 141 142 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0); 143 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); 144 145 return 0; 146 } 147 148 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, 149 struct snd_ctl_elem_value *ucontrol) 150 { 151 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 152 u16 val; 153 154 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0); 155 val = val >> 6; 156 val = (val >= 4) ? 4 : (3 - val); 157 ucontrol->value.integer.value[0] = val; 158 return 0; 159 160 } 161 162 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { 163 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, 164 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), 165 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), 166 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, 167 TLV320AIC23_RINVOL, 7, 1, 0), 168 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, 169 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), 170 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), 171 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), 172 SOC_SINGLE_EXT_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0, 173 snd_soc_tlv320aic23_get_volsw, 174 snd_soc_tlv320aic23_put_volsw, sidetone_vol_tlv), 175 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), 176 }; 177 178 /* PGA Mixer controls for Line and Mic switch */ 179 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 180 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 181 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 182 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 183 }; 184 185 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 186 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 187 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 188 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 189 &tlv320aic23_rec_src_mux_controls), 190 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 191 &tlv320aic23_output_mixer_controls[0], 192 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 193 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 194 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 195 196 SND_SOC_DAPM_OUTPUT("LHPOUT"), 197 SND_SOC_DAPM_OUTPUT("RHPOUT"), 198 SND_SOC_DAPM_OUTPUT("LOUT"), 199 SND_SOC_DAPM_OUTPUT("ROUT"), 200 201 SND_SOC_DAPM_INPUT("LLINEIN"), 202 SND_SOC_DAPM_INPUT("RLINEIN"), 203 204 SND_SOC_DAPM_INPUT("MICIN"), 205 }; 206 207 static const struct snd_soc_dapm_route tlv320aic23_intercon[] = { 208 /* Output Mixer */ 209 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 210 {"Output Mixer", "Playback Switch", "DAC"}, 211 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 212 213 /* Outputs */ 214 {"RHPOUT", NULL, "Output Mixer"}, 215 {"LHPOUT", NULL, "Output Mixer"}, 216 {"LOUT", NULL, "Output Mixer"}, 217 {"ROUT", NULL, "Output Mixer"}, 218 219 /* Inputs */ 220 {"Line Input", "NULL", "LLINEIN"}, 221 {"Line Input", "NULL", "RLINEIN"}, 222 223 {"Mic Input", "NULL", "MICIN"}, 224 225 /* input mux */ 226 {"Capture Source", "Line", "Line Input"}, 227 {"Capture Source", "Mic", "Mic Input"}, 228 {"ADC", NULL, "Capture Source"}, 229 230 }; 231 232 /* AIC23 driver data */ 233 struct aic23 { 234 enum snd_soc_control_type control_type; 235 void *control_data; 236 int mclk; 237 int requested_adc; 238 int requested_dac; 239 }; 240 241 /* 242 * Common Crystals used 243 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k 244 * 12.0000 Mhz /125 = *96k /136 = 88.235K 245 * 12.2880 Mhz /128 = *96k /192 = 64k 246 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k 247 * 18.4320 Mhz /128 = 144k /192 = *96k 248 */ 249 250 /* 251 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 252 * USB BOSR 0-250/2 = 125, 1-272/2 = 136 253 */ 254 static const int bosr_usb_divisor_table[] = { 255 128, 125, 192, 136 256 }; 257 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) 258 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) 259 static const unsigned short sr_valid_mask[] = { 260 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ 261 LOWER_GROUP, /* Usb, bosr - 0*/ 262 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 263 UPPER_GROUP, /* Usb, bosr - 1*/ 264 }; 265 /* 266 * Every divisor is a factor of 11*12 267 */ 268 #define SR_MULT (11*12) 269 #define A(x) (SR_MULT/x) 270 static const unsigned char sr_adc_mult_table[] = { 271 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1), 272 A(2), A(2), A(11), A(11), 0, 0, 0, A(1) 273 }; 274 static const unsigned char sr_dac_mult_table[] = { 275 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1), 276 A(2), A(11), A(2), A(11), 0, 0, 0, A(1) 277 }; 278 279 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, 280 int dac, int dac_l, int dac_h, int need_dac) 281 { 282 if ((adc >= adc_l) && (adc <= adc_h) && 283 (dac >= dac_l) && (dac <= dac_h)) { 284 int diff_adc = need_adc - adc; 285 int diff_dac = need_dac - dac; 286 return abs(diff_adc) + abs(diff_dac); 287 } 288 return UINT_MAX; 289 } 290 291 static int find_rate(int mclk, u32 need_adc, u32 need_dac) 292 { 293 int i, j; 294 int best_i = -1; 295 int best_j = -1; 296 int best_div = 0; 297 unsigned best_score = UINT_MAX; 298 int adc_l, adc_h, dac_l, dac_h; 299 300 need_adc *= SR_MULT; 301 need_dac *= SR_MULT; 302 /* 303 * rates given are +/- 1/32 304 */ 305 adc_l = need_adc - (need_adc >> 5); 306 adc_h = need_adc + (need_adc >> 5); 307 dac_l = need_dac - (need_dac >> 5); 308 dac_h = need_dac + (need_dac >> 5); 309 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { 310 int base = mclk / bosr_usb_divisor_table[i]; 311 int mask = sr_valid_mask[i]; 312 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); 313 j++, mask >>= 1) { 314 int adc; 315 int dac; 316 int score; 317 if ((mask & 1) == 0) 318 continue; 319 adc = base * sr_adc_mult_table[j]; 320 dac = base * sr_dac_mult_table[j]; 321 score = get_score(adc, adc_l, adc_h, need_adc, 322 dac, dac_l, dac_h, need_dac); 323 if (best_score > score) { 324 best_score = score; 325 best_i = i; 326 best_j = j; 327 best_div = 0; 328 } 329 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 330 (dac >> 1), dac_l, dac_h, need_dac); 331 /* prefer to have a /2 */ 332 if ((score != UINT_MAX) && (best_score >= score)) { 333 best_score = score; 334 best_i = i; 335 best_j = j; 336 best_div = 1; 337 } 338 } 339 } 340 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 341 } 342 343 #ifdef DEBUG 344 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 345 u32 *sample_rate_adc, u32 *sample_rate_dac) 346 { 347 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); 348 int sr = (src >> 2) & 0x0f; 349 int val = (mclk / bosr_usb_divisor_table[src & 3]); 350 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 351 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 352 if (src & TLV320AIC23_CLKIN_HALF) { 353 adc >>= 1; 354 dac >>= 1; 355 } 356 *sample_rate_adc = adc; 357 *sample_rate_dac = dac; 358 } 359 #endif 360 361 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 362 u32 sample_rate_adc, u32 sample_rate_dac) 363 { 364 /* Search for the right sample rate */ 365 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 366 if (data < 0) { 367 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 368 __func__, sample_rate_adc, sample_rate_dac); 369 return -EINVAL; 370 } 371 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 372 #ifdef DEBUG 373 { 374 u32 adc, dac; 375 get_current_sample_rates(codec, mclk, &adc, &dac); 376 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 377 adc, dac, data); 378 } 379 #endif 380 return 0; 381 } 382 383 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 384 struct snd_pcm_hw_params *params, 385 struct snd_soc_dai *dai) 386 { 387 struct snd_soc_pcm_runtime *rtd = substream->private_data; 388 struct snd_soc_codec *codec = rtd->codec; 389 u16 iface_reg; 390 int ret; 391 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 392 u32 sample_rate_adc = aic23->requested_adc; 393 u32 sample_rate_dac = aic23->requested_dac; 394 u32 sample_rate = params_rate(params); 395 396 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 397 aic23->requested_dac = sample_rate_dac = sample_rate; 398 if (!sample_rate_adc) 399 sample_rate_adc = sample_rate; 400 } else { 401 aic23->requested_adc = sample_rate_adc = sample_rate; 402 if (!sample_rate_dac) 403 sample_rate_dac = sample_rate; 404 } 405 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 406 sample_rate_dac); 407 if (ret < 0) 408 return ret; 409 410 iface_reg = 411 tlv320aic23_read_reg_cache(codec, 412 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 413 switch (params_format(params)) { 414 case SNDRV_PCM_FORMAT_S16_LE: 415 break; 416 case SNDRV_PCM_FORMAT_S20_3LE: 417 iface_reg |= (0x01 << 2); 418 break; 419 case SNDRV_PCM_FORMAT_S24_LE: 420 iface_reg |= (0x02 << 2); 421 break; 422 case SNDRV_PCM_FORMAT_S32_LE: 423 iface_reg |= (0x03 << 2); 424 break; 425 } 426 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 427 428 return 0; 429 } 430 431 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, 432 struct snd_soc_dai *dai) 433 { 434 struct snd_soc_pcm_runtime *rtd = substream->private_data; 435 struct snd_soc_codec *codec = rtd->codec; 436 437 /* set active */ 438 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 439 440 return 0; 441 } 442 443 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, 444 struct snd_soc_dai *dai) 445 { 446 struct snd_soc_pcm_runtime *rtd = substream->private_data; 447 struct snd_soc_codec *codec = rtd->codec; 448 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 449 450 /* deactivate */ 451 if (!codec->active) { 452 udelay(50); 453 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 454 } 455 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 456 aic23->requested_dac = 0; 457 else 458 aic23->requested_adc = 0; 459 } 460 461 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 462 { 463 struct snd_soc_codec *codec = dai->codec; 464 u16 reg; 465 466 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 467 if (mute) 468 reg |= TLV320AIC23_DACM_MUTE; 469 470 else 471 reg &= ~TLV320AIC23_DACM_MUTE; 472 473 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 474 475 return 0; 476 } 477 478 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 479 unsigned int fmt) 480 { 481 struct snd_soc_codec *codec = codec_dai->codec; 482 u16 iface_reg; 483 484 iface_reg = 485 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 486 487 /* set master/slave audio interface */ 488 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 489 case SND_SOC_DAIFMT_CBM_CFM: 490 iface_reg |= TLV320AIC23_MS_MASTER; 491 break; 492 case SND_SOC_DAIFMT_CBS_CFS: 493 break; 494 default: 495 return -EINVAL; 496 497 } 498 499 /* interface format */ 500 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 501 case SND_SOC_DAIFMT_I2S: 502 iface_reg |= TLV320AIC23_FOR_I2S; 503 break; 504 case SND_SOC_DAIFMT_DSP_A: 505 iface_reg |= TLV320AIC23_LRP_ON; 506 case SND_SOC_DAIFMT_DSP_B: 507 iface_reg |= TLV320AIC23_FOR_DSP; 508 break; 509 case SND_SOC_DAIFMT_RIGHT_J: 510 break; 511 case SND_SOC_DAIFMT_LEFT_J: 512 iface_reg |= TLV320AIC23_FOR_LJUST; 513 break; 514 default: 515 return -EINVAL; 516 517 } 518 519 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 520 521 return 0; 522 } 523 524 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 525 int clk_id, unsigned int freq, int dir) 526 { 527 struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai); 528 aic23->mclk = freq; 529 return 0; 530 } 531 532 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 533 enum snd_soc_bias_level level) 534 { 535 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 536 537 switch (level) { 538 case SND_SOC_BIAS_ON: 539 /* vref/mid, osc on, dac unmute */ 540 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \ 541 TLV320AIC23_DAC_OFF); 542 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 543 break; 544 case SND_SOC_BIAS_PREPARE: 545 break; 546 case SND_SOC_BIAS_STANDBY: 547 /* everything off except vref/vmid, */ 548 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | \ 549 TLV320AIC23_CLK_OFF); 550 break; 551 case SND_SOC_BIAS_OFF: 552 /* everything off, dac mute, inactive */ 553 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 554 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 555 break; 556 } 557 codec->dapm.bias_level = level; 558 return 0; 559 } 560 561 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 562 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 563 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 564 565 static struct snd_soc_dai_ops tlv320aic23_dai_ops = { 566 .prepare = tlv320aic23_pcm_prepare, 567 .hw_params = tlv320aic23_hw_params, 568 .shutdown = tlv320aic23_shutdown, 569 .digital_mute = tlv320aic23_mute, 570 .set_fmt = tlv320aic23_set_dai_fmt, 571 .set_sysclk = tlv320aic23_set_dai_sysclk, 572 }; 573 574 static struct snd_soc_dai_driver tlv320aic23_dai = { 575 .name = "tlv320aic23-hifi", 576 .playback = { 577 .stream_name = "Playback", 578 .channels_min = 2, 579 .channels_max = 2, 580 .rates = AIC23_RATES, 581 .formats = AIC23_FORMATS,}, 582 .capture = { 583 .stream_name = "Capture", 584 .channels_min = 2, 585 .channels_max = 2, 586 .rates = AIC23_RATES, 587 .formats = AIC23_FORMATS,}, 588 .ops = &tlv320aic23_dai_ops, 589 }; 590 591 static int tlv320aic23_suspend(struct snd_soc_codec *codec, 592 pm_message_t state) 593 { 594 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 595 596 return 0; 597 } 598 599 static int tlv320aic23_resume(struct snd_soc_codec *codec) 600 { 601 u16 reg; 602 603 /* Sync reg_cache with the hardware */ 604 for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) { 605 u16 val = tlv320aic23_read_reg_cache(codec, reg); 606 tlv320aic23_write(codec, reg, val); 607 } 608 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 609 610 return 0; 611 } 612 613 static int tlv320aic23_probe(struct snd_soc_codec *codec) 614 { 615 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 616 int reg; 617 618 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 619 codec->control_data = aic23->control_data; 620 codec->hw_write = (hw_write_t)i2c_master_send; 621 codec->hw_read = NULL; 622 623 /* Reset codec */ 624 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 625 626 /* power on device */ 627 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 628 629 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 630 631 /* Unmute input */ 632 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 633 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 634 (reg & (~TLV320AIC23_LIM_MUTED)) | 635 (TLV320AIC23_LRS_ENABLED)); 636 637 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 638 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 639 (reg & (~TLV320AIC23_LIM_MUTED)) | 640 TLV320AIC23_LRS_ENABLED); 641 642 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 643 tlv320aic23_write(codec, TLV320AIC23_ANLG, 644 (reg) & (~TLV320AIC23_BYPASS_ON) & 645 (~TLV320AIC23_MICM_MUTED)); 646 647 /* Default output volume */ 648 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 649 TLV320AIC23_DEFAULT_OUT_VOL & 650 TLV320AIC23_OUT_VOL_MASK); 651 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 652 TLV320AIC23_DEFAULT_OUT_VOL & 653 TLV320AIC23_OUT_VOL_MASK); 654 655 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 656 657 snd_soc_add_controls(codec, tlv320aic23_snd_controls, 658 ARRAY_SIZE(tlv320aic23_snd_controls)); 659 660 return 0; 661 } 662 663 static int tlv320aic23_remove(struct snd_soc_codec *codec) 664 { 665 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 666 return 0; 667 } 668 669 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = { 670 .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg), 671 .reg_word_size = sizeof(u16), 672 .reg_cache_default = tlv320aic23_reg, 673 .probe = tlv320aic23_probe, 674 .remove = tlv320aic23_remove, 675 .suspend = tlv320aic23_suspend, 676 .resume = tlv320aic23_resume, 677 .read = tlv320aic23_read_reg_cache, 678 .write = tlv320aic23_write, 679 .set_bias_level = tlv320aic23_set_bias_level, 680 .dapm_widgets = tlv320aic23_dapm_widgets, 681 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), 682 .dapm_routes = tlv320aic23_intercon, 683 .num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon), 684 }; 685 686 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 687 /* 688 * If the i2c layer weren't so broken, we could pass this kind of data 689 * around 690 */ 691 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 692 const struct i2c_device_id *i2c_id) 693 { 694 struct aic23 *aic23; 695 int ret; 696 697 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 698 return -EINVAL; 699 700 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 701 if (aic23 == NULL) 702 return -ENOMEM; 703 704 i2c_set_clientdata(i2c, aic23); 705 aic23->control_data = i2c; 706 aic23->control_type = SND_SOC_I2C; 707 708 ret = snd_soc_register_codec(&i2c->dev, 709 &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1); 710 if (ret < 0) 711 kfree(aic23); 712 return ret; 713 } 714 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 715 { 716 snd_soc_unregister_codec(&i2c->dev); 717 kfree(i2c_get_clientdata(i2c)); 718 return 0; 719 } 720 721 static const struct i2c_device_id tlv320aic23_id[] = { 722 {"tlv320aic23", 0}, 723 {} 724 }; 725 726 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 727 728 static struct i2c_driver tlv320aic23_i2c_driver = { 729 .driver = { 730 .name = "tlv320aic23-codec", 731 }, 732 .probe = tlv320aic23_codec_probe, 733 .remove = __exit_p(tlv320aic23_i2c_remove), 734 .id_table = tlv320aic23_id, 735 }; 736 737 #endif 738 739 static int __init tlv320aic23_modinit(void) 740 { 741 int ret; 742 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 743 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 744 if (ret != 0) { 745 printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n", 746 ret); 747 } 748 #endif 749 return ret; 750 } 751 module_init(tlv320aic23_modinit); 752 753 static void __exit tlv320aic23_exit(void) 754 { 755 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 756 i2c_del_driver(&tlv320aic23_i2c_driver); 757 #endif 758 } 759 module_exit(tlv320aic23_exit); 760 761 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 762 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 763 MODULE_LICENSE("GPL"); 764