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 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 163 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 164 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 165 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 166 .tlv.p = (tlv_array), \ 167 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\ 168 .put = snd_soc_tlv320aic23_put_volsw, \ 169 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 170 171 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { 172 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, 173 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), 174 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), 175 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, 176 TLV320AIC23_RINVOL, 7, 1, 0), 177 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, 178 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), 179 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), 180 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), 181 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG, 182 6, 4, 0, sidetone_vol_tlv), 183 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), 184 }; 185 186 /* PGA Mixer controls for Line and Mic switch */ 187 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 188 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 189 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 190 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 191 }; 192 193 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 194 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 195 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 196 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 197 &tlv320aic23_rec_src_mux_controls), 198 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 199 &tlv320aic23_output_mixer_controls[0], 200 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 201 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 202 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 203 204 SND_SOC_DAPM_OUTPUT("LHPOUT"), 205 SND_SOC_DAPM_OUTPUT("RHPOUT"), 206 SND_SOC_DAPM_OUTPUT("LOUT"), 207 SND_SOC_DAPM_OUTPUT("ROUT"), 208 209 SND_SOC_DAPM_INPUT("LLINEIN"), 210 SND_SOC_DAPM_INPUT("RLINEIN"), 211 212 SND_SOC_DAPM_INPUT("MICIN"), 213 }; 214 215 static const struct snd_soc_dapm_route tlv320aic23_intercon[] = { 216 /* Output Mixer */ 217 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 218 {"Output Mixer", "Playback Switch", "DAC"}, 219 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 220 221 /* Outputs */ 222 {"RHPOUT", NULL, "Output Mixer"}, 223 {"LHPOUT", NULL, "Output Mixer"}, 224 {"LOUT", NULL, "Output Mixer"}, 225 {"ROUT", NULL, "Output Mixer"}, 226 227 /* Inputs */ 228 {"Line Input", "NULL", "LLINEIN"}, 229 {"Line Input", "NULL", "RLINEIN"}, 230 231 {"Mic Input", "NULL", "MICIN"}, 232 233 /* input mux */ 234 {"Capture Source", "Line", "Line Input"}, 235 {"Capture Source", "Mic", "Mic Input"}, 236 {"ADC", NULL, "Capture Source"}, 237 238 }; 239 240 /* AIC23 driver data */ 241 struct aic23 { 242 enum snd_soc_control_type control_type; 243 void *control_data; 244 int mclk; 245 int requested_adc; 246 int requested_dac; 247 }; 248 249 /* 250 * Common Crystals used 251 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k 252 * 12.0000 Mhz /125 = *96k /136 = 88.235K 253 * 12.2880 Mhz /128 = *96k /192 = 64k 254 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k 255 * 18.4320 Mhz /128 = 144k /192 = *96k 256 */ 257 258 /* 259 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 260 * USB BOSR 0-250/2 = 125, 1-272/2 = 136 261 */ 262 static const int bosr_usb_divisor_table[] = { 263 128, 125, 192, 136 264 }; 265 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) 266 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) 267 static const unsigned short sr_valid_mask[] = { 268 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ 269 LOWER_GROUP, /* Usb, bosr - 0*/ 270 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 271 UPPER_GROUP, /* Usb, bosr - 1*/ 272 }; 273 /* 274 * Every divisor is a factor of 11*12 275 */ 276 #define SR_MULT (11*12) 277 #define A(x) (SR_MULT/x) 278 static const unsigned char sr_adc_mult_table[] = { 279 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1), 280 A(2), A(2), A(11), A(11), 0, 0, 0, A(1) 281 }; 282 static const unsigned char sr_dac_mult_table[] = { 283 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1), 284 A(2), A(11), A(2), A(11), 0, 0, 0, A(1) 285 }; 286 287 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, 288 int dac, int dac_l, int dac_h, int need_dac) 289 { 290 if ((adc >= adc_l) && (adc <= adc_h) && 291 (dac >= dac_l) && (dac <= dac_h)) { 292 int diff_adc = need_adc - adc; 293 int diff_dac = need_dac - dac; 294 return abs(diff_adc) + abs(diff_dac); 295 } 296 return UINT_MAX; 297 } 298 299 static int find_rate(int mclk, u32 need_adc, u32 need_dac) 300 { 301 int i, j; 302 int best_i = -1; 303 int best_j = -1; 304 int best_div = 0; 305 unsigned best_score = UINT_MAX; 306 int adc_l, adc_h, dac_l, dac_h; 307 308 need_adc *= SR_MULT; 309 need_dac *= SR_MULT; 310 /* 311 * rates given are +/- 1/32 312 */ 313 adc_l = need_adc - (need_adc >> 5); 314 adc_h = need_adc + (need_adc >> 5); 315 dac_l = need_dac - (need_dac >> 5); 316 dac_h = need_dac + (need_dac >> 5); 317 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { 318 int base = mclk / bosr_usb_divisor_table[i]; 319 int mask = sr_valid_mask[i]; 320 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); 321 j++, mask >>= 1) { 322 int adc; 323 int dac; 324 int score; 325 if ((mask & 1) == 0) 326 continue; 327 adc = base * sr_adc_mult_table[j]; 328 dac = base * sr_dac_mult_table[j]; 329 score = get_score(adc, adc_l, adc_h, need_adc, 330 dac, dac_l, dac_h, need_dac); 331 if (best_score > score) { 332 best_score = score; 333 best_i = i; 334 best_j = j; 335 best_div = 0; 336 } 337 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 338 (dac >> 1), dac_l, dac_h, need_dac); 339 /* prefer to have a /2 */ 340 if ((score != UINT_MAX) && (best_score >= score)) { 341 best_score = score; 342 best_i = i; 343 best_j = j; 344 best_div = 1; 345 } 346 } 347 } 348 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 349 } 350 351 #ifdef DEBUG 352 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 353 u32 *sample_rate_adc, u32 *sample_rate_dac) 354 { 355 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); 356 int sr = (src >> 2) & 0x0f; 357 int val = (mclk / bosr_usb_divisor_table[src & 3]); 358 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 359 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 360 if (src & TLV320AIC23_CLKIN_HALF) { 361 adc >>= 1; 362 dac >>= 1; 363 } 364 *sample_rate_adc = adc; 365 *sample_rate_dac = dac; 366 } 367 #endif 368 369 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 370 u32 sample_rate_adc, u32 sample_rate_dac) 371 { 372 /* Search for the right sample rate */ 373 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 374 if (data < 0) { 375 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 376 __func__, sample_rate_adc, sample_rate_dac); 377 return -EINVAL; 378 } 379 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 380 #ifdef DEBUG 381 { 382 u32 adc, dac; 383 get_current_sample_rates(codec, mclk, &adc, &dac); 384 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 385 adc, dac, data); 386 } 387 #endif 388 return 0; 389 } 390 391 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 392 struct snd_pcm_hw_params *params, 393 struct snd_soc_dai *dai) 394 { 395 struct snd_soc_pcm_runtime *rtd = substream->private_data; 396 struct snd_soc_codec *codec = rtd->codec; 397 u16 iface_reg; 398 int ret; 399 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 400 u32 sample_rate_adc = aic23->requested_adc; 401 u32 sample_rate_dac = aic23->requested_dac; 402 u32 sample_rate = params_rate(params); 403 404 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 405 aic23->requested_dac = sample_rate_dac = sample_rate; 406 if (!sample_rate_adc) 407 sample_rate_adc = sample_rate; 408 } else { 409 aic23->requested_adc = sample_rate_adc = sample_rate; 410 if (!sample_rate_dac) 411 sample_rate_dac = sample_rate; 412 } 413 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 414 sample_rate_dac); 415 if (ret < 0) 416 return ret; 417 418 iface_reg = 419 tlv320aic23_read_reg_cache(codec, 420 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 421 switch (params_format(params)) { 422 case SNDRV_PCM_FORMAT_S16_LE: 423 break; 424 case SNDRV_PCM_FORMAT_S20_3LE: 425 iface_reg |= (0x01 << 2); 426 break; 427 case SNDRV_PCM_FORMAT_S24_LE: 428 iface_reg |= (0x02 << 2); 429 break; 430 case SNDRV_PCM_FORMAT_S32_LE: 431 iface_reg |= (0x03 << 2); 432 break; 433 } 434 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 435 436 return 0; 437 } 438 439 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, 440 struct snd_soc_dai *dai) 441 { 442 struct snd_soc_pcm_runtime *rtd = substream->private_data; 443 struct snd_soc_codec *codec = rtd->codec; 444 445 /* set active */ 446 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 447 448 return 0; 449 } 450 451 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, 452 struct snd_soc_dai *dai) 453 { 454 struct snd_soc_pcm_runtime *rtd = substream->private_data; 455 struct snd_soc_codec *codec = rtd->codec; 456 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 457 458 /* deactivate */ 459 if (!codec->active) { 460 udelay(50); 461 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 462 } 463 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 464 aic23->requested_dac = 0; 465 else 466 aic23->requested_adc = 0; 467 } 468 469 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 470 { 471 struct snd_soc_codec *codec = dai->codec; 472 u16 reg; 473 474 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 475 if (mute) 476 reg |= TLV320AIC23_DACM_MUTE; 477 478 else 479 reg &= ~TLV320AIC23_DACM_MUTE; 480 481 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 482 483 return 0; 484 } 485 486 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 487 unsigned int fmt) 488 { 489 struct snd_soc_codec *codec = codec_dai->codec; 490 u16 iface_reg; 491 492 iface_reg = 493 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 494 495 /* set master/slave audio interface */ 496 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 497 case SND_SOC_DAIFMT_CBM_CFM: 498 iface_reg |= TLV320AIC23_MS_MASTER; 499 break; 500 case SND_SOC_DAIFMT_CBS_CFS: 501 break; 502 default: 503 return -EINVAL; 504 505 } 506 507 /* interface format */ 508 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 509 case SND_SOC_DAIFMT_I2S: 510 iface_reg |= TLV320AIC23_FOR_I2S; 511 break; 512 case SND_SOC_DAIFMT_DSP_A: 513 iface_reg |= TLV320AIC23_LRP_ON; 514 case SND_SOC_DAIFMT_DSP_B: 515 iface_reg |= TLV320AIC23_FOR_DSP; 516 break; 517 case SND_SOC_DAIFMT_RIGHT_J: 518 break; 519 case SND_SOC_DAIFMT_LEFT_J: 520 iface_reg |= TLV320AIC23_FOR_LJUST; 521 break; 522 default: 523 return -EINVAL; 524 525 } 526 527 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 528 529 return 0; 530 } 531 532 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 533 int clk_id, unsigned int freq, int dir) 534 { 535 struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai); 536 aic23->mclk = freq; 537 return 0; 538 } 539 540 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 541 enum snd_soc_bias_level level) 542 { 543 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 544 545 switch (level) { 546 case SND_SOC_BIAS_ON: 547 /* vref/mid, osc on, dac unmute */ 548 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \ 549 TLV320AIC23_DAC_OFF); 550 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 551 break; 552 case SND_SOC_BIAS_PREPARE: 553 break; 554 case SND_SOC_BIAS_STANDBY: 555 /* everything off except vref/vmid, */ 556 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | \ 557 TLV320AIC23_CLK_OFF); 558 break; 559 case SND_SOC_BIAS_OFF: 560 /* everything off, dac mute, inactive */ 561 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 562 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 563 break; 564 } 565 codec->dapm.bias_level = level; 566 return 0; 567 } 568 569 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 570 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 571 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 572 573 static struct snd_soc_dai_ops tlv320aic23_dai_ops = { 574 .prepare = tlv320aic23_pcm_prepare, 575 .hw_params = tlv320aic23_hw_params, 576 .shutdown = tlv320aic23_shutdown, 577 .digital_mute = tlv320aic23_mute, 578 .set_fmt = tlv320aic23_set_dai_fmt, 579 .set_sysclk = tlv320aic23_set_dai_sysclk, 580 }; 581 582 static struct snd_soc_dai_driver tlv320aic23_dai = { 583 .name = "tlv320aic23-hifi", 584 .playback = { 585 .stream_name = "Playback", 586 .channels_min = 2, 587 .channels_max = 2, 588 .rates = AIC23_RATES, 589 .formats = AIC23_FORMATS,}, 590 .capture = { 591 .stream_name = "Capture", 592 .channels_min = 2, 593 .channels_max = 2, 594 .rates = AIC23_RATES, 595 .formats = AIC23_FORMATS,}, 596 .ops = &tlv320aic23_dai_ops, 597 }; 598 599 static int tlv320aic23_suspend(struct snd_soc_codec *codec, 600 pm_message_t state) 601 { 602 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 603 604 return 0; 605 } 606 607 static int tlv320aic23_resume(struct snd_soc_codec *codec) 608 { 609 u16 reg; 610 611 /* Sync reg_cache with the hardware */ 612 for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) { 613 u16 val = tlv320aic23_read_reg_cache(codec, reg); 614 tlv320aic23_write(codec, reg, val); 615 } 616 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 617 618 return 0; 619 } 620 621 static int tlv320aic23_probe(struct snd_soc_codec *codec) 622 { 623 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 624 int reg; 625 626 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 627 codec->control_data = aic23->control_data; 628 codec->hw_write = (hw_write_t)i2c_master_send; 629 codec->hw_read = NULL; 630 631 /* Reset codec */ 632 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 633 634 /* power on device */ 635 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 636 637 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 638 639 /* Unmute input */ 640 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 641 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 642 (reg & (~TLV320AIC23_LIM_MUTED)) | 643 (TLV320AIC23_LRS_ENABLED)); 644 645 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 646 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 647 (reg & (~TLV320AIC23_LIM_MUTED)) | 648 TLV320AIC23_LRS_ENABLED); 649 650 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 651 tlv320aic23_write(codec, TLV320AIC23_ANLG, 652 (reg) & (~TLV320AIC23_BYPASS_ON) & 653 (~TLV320AIC23_MICM_MUTED)); 654 655 /* Default output volume */ 656 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 657 TLV320AIC23_DEFAULT_OUT_VOL & 658 TLV320AIC23_OUT_VOL_MASK); 659 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 660 TLV320AIC23_DEFAULT_OUT_VOL & 661 TLV320AIC23_OUT_VOL_MASK); 662 663 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 664 665 snd_soc_add_controls(codec, tlv320aic23_snd_controls, 666 ARRAY_SIZE(tlv320aic23_snd_controls)); 667 668 return 0; 669 } 670 671 static int tlv320aic23_remove(struct snd_soc_codec *codec) 672 { 673 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 674 return 0; 675 } 676 677 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = { 678 .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg), 679 .reg_word_size = sizeof(u16), 680 .reg_cache_default = tlv320aic23_reg, 681 .probe = tlv320aic23_probe, 682 .remove = tlv320aic23_remove, 683 .suspend = tlv320aic23_suspend, 684 .resume = tlv320aic23_resume, 685 .read = tlv320aic23_read_reg_cache, 686 .write = tlv320aic23_write, 687 .set_bias_level = tlv320aic23_set_bias_level, 688 .dapm_widgets = tlv320aic23_dapm_widgets, 689 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets), 690 .dapm_routes = tlv320aic23_intercon, 691 .num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon), 692 }; 693 694 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 695 /* 696 * If the i2c layer weren't so broken, we could pass this kind of data 697 * around 698 */ 699 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 700 const struct i2c_device_id *i2c_id) 701 { 702 struct aic23 *aic23; 703 int ret; 704 705 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 706 return -EINVAL; 707 708 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 709 if (aic23 == NULL) 710 return -ENOMEM; 711 712 i2c_set_clientdata(i2c, aic23); 713 aic23->control_data = i2c; 714 aic23->control_type = SND_SOC_I2C; 715 716 ret = snd_soc_register_codec(&i2c->dev, 717 &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1); 718 if (ret < 0) 719 kfree(aic23); 720 return ret; 721 } 722 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 723 { 724 snd_soc_unregister_codec(&i2c->dev); 725 kfree(i2c_get_clientdata(i2c)); 726 return 0; 727 } 728 729 static const struct i2c_device_id tlv320aic23_id[] = { 730 {"tlv320aic23", 0}, 731 {} 732 }; 733 734 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 735 736 static struct i2c_driver tlv320aic23_i2c_driver = { 737 .driver = { 738 .name = "tlv320aic23-codec", 739 }, 740 .probe = tlv320aic23_codec_probe, 741 .remove = __exit_p(tlv320aic23_i2c_remove), 742 .id_table = tlv320aic23_id, 743 }; 744 745 #endif 746 747 static int __init tlv320aic23_modinit(void) 748 { 749 int ret; 750 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 751 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 752 if (ret != 0) { 753 printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n", 754 ret); 755 } 756 #endif 757 return ret; 758 } 759 module_init(tlv320aic23_modinit); 760 761 static void __exit tlv320aic23_exit(void) 762 { 763 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 764 i2c_del_driver(&tlv320aic23_i2c_driver); 765 #endif 766 } 767 module_exit(tlv320aic23_exit); 768 769 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 770 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 771 MODULE_LICENSE("GPL"); 772