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/soc-dapm.h> 34 #include <sound/tlv.h> 35 #include <sound/initval.h> 36 37 #include "tlv320aic23.h" 38 39 #define AIC23_VERSION "0.1" 40 41 /* 42 * AIC23 register cache 43 */ 44 static const u16 tlv320aic23_reg[] = { 45 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */ 46 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */ 47 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */ 48 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */ 49 }; 50 51 /* 52 * read tlv320aic23 register cache 53 */ 54 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec 55 *codec, unsigned int reg) 56 { 57 u16 *cache = codec->reg_cache; 58 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 59 return -1; 60 return cache[reg]; 61 } 62 63 /* 64 * write tlv320aic23 register cache 65 */ 66 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec, 67 u8 reg, u16 value) 68 { 69 u16 *cache = codec->reg_cache; 70 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 71 return; 72 cache[reg] = value; 73 } 74 75 /* 76 * write to the tlv320aic23 register space 77 */ 78 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg, 79 unsigned int value) 80 { 81 82 u8 data[2]; 83 84 /* TLV320AIC23 has 7 bit address and 9 bits of data 85 * so we need to switch one data bit into reg and rest 86 * of data into val 87 */ 88 89 if (reg > 9 && reg != 15) { 90 printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg); 91 return -1; 92 } 93 94 data[0] = (reg << 1) | (value >> 8 & 0x01); 95 data[1] = value & 0xff; 96 97 tlv320aic23_write_reg_cache(codec, reg, value); 98 99 if (codec->hw_write(codec->control_data, data, 2) == 2) 100 return 0; 101 102 printk(KERN_ERR "%s cannot write %03x to register R%u\n", __func__, 103 value, reg); 104 105 return -EIO; 106 } 107 108 static const char *rec_src_text[] = { "Line", "Mic" }; 109 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 110 111 static const struct soc_enum rec_src_enum = 112 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 113 114 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls = 115 SOC_DAPM_ENUM("Input Select", rec_src_enum); 116 117 static const struct soc_enum tlv320aic23_rec_src = 118 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 119 static const struct soc_enum tlv320aic23_deemph = 120 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text); 121 122 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); 123 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); 124 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); 125 126 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, 127 struct snd_ctl_elem_value *ucontrol) 128 { 129 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 130 u16 val, reg; 131 132 val = (ucontrol->value.integer.value[0] & 0x07); 133 134 /* linear conversion to userspace 135 * 000 = -6db 136 * 001 = -9db 137 * 010 = -12db 138 * 011 = -18db (Min) 139 * 100 = 0db (Max) 140 */ 141 val = (val >= 4) ? 4 : (3 - val); 142 143 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0); 144 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); 145 146 return 0; 147 } 148 149 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, 150 struct snd_ctl_elem_value *ucontrol) 151 { 152 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 153 u16 val; 154 155 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0); 156 val = val >> 6; 157 val = (val >= 4) ? 4 : (3 - val); 158 ucontrol->value.integer.value[0] = val; 159 return 0; 160 161 } 162 163 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 164 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 165 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 166 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 167 .tlv.p = (tlv_array), \ 168 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\ 169 .put = snd_soc_tlv320aic23_put_volsw, \ 170 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 171 172 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { 173 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, 174 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), 175 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), 176 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, 177 TLV320AIC23_RINVOL, 7, 1, 0), 178 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, 179 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), 180 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), 181 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), 182 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG, 183 6, 4, 0, sidetone_vol_tlv), 184 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), 185 }; 186 187 /* PGA Mixer controls for Line and Mic switch */ 188 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 189 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 190 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 191 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 192 }; 193 194 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 195 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 196 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 197 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 198 &tlv320aic23_rec_src_mux_controls), 199 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 200 &tlv320aic23_output_mixer_controls[0], 201 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 202 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 203 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 204 205 SND_SOC_DAPM_OUTPUT("LHPOUT"), 206 SND_SOC_DAPM_OUTPUT("RHPOUT"), 207 SND_SOC_DAPM_OUTPUT("LOUT"), 208 SND_SOC_DAPM_OUTPUT("ROUT"), 209 210 SND_SOC_DAPM_INPUT("LLINEIN"), 211 SND_SOC_DAPM_INPUT("RLINEIN"), 212 213 SND_SOC_DAPM_INPUT("MICIN"), 214 }; 215 216 static const struct snd_soc_dapm_route intercon[] = { 217 /* Output Mixer */ 218 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 219 {"Output Mixer", "Playback Switch", "DAC"}, 220 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 221 222 /* Outputs */ 223 {"RHPOUT", NULL, "Output Mixer"}, 224 {"LHPOUT", NULL, "Output Mixer"}, 225 {"LOUT", NULL, "Output Mixer"}, 226 {"ROUT", NULL, "Output Mixer"}, 227 228 /* Inputs */ 229 {"Line Input", "NULL", "LLINEIN"}, 230 {"Line Input", "NULL", "RLINEIN"}, 231 232 {"Mic Input", "NULL", "MICIN"}, 233 234 /* input mux */ 235 {"Capture Source", "Line", "Line Input"}, 236 {"Capture Source", "Mic", "Mic Input"}, 237 {"ADC", NULL, "Capture Source"}, 238 239 }; 240 241 /* AIC23 driver data */ 242 struct aic23 { 243 enum snd_soc_control_type control_type; 244 void *control_data; 245 int mclk; 246 int requested_adc; 247 int requested_dac; 248 }; 249 250 /* 251 * Common Crystals used 252 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k 253 * 12.0000 Mhz /125 = *96k /136 = 88.235K 254 * 12.2880 Mhz /128 = *96k /192 = 64k 255 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k 256 * 18.4320 Mhz /128 = 144k /192 = *96k 257 */ 258 259 /* 260 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 261 * USB BOSR 0-250/2 = 125, 1-272/2 = 136 262 */ 263 static const int bosr_usb_divisor_table[] = { 264 128, 125, 192, 136 265 }; 266 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) 267 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) 268 static const unsigned short sr_valid_mask[] = { 269 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ 270 LOWER_GROUP, /* Usb, bosr - 0*/ 271 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 272 UPPER_GROUP, /* Usb, bosr - 1*/ 273 }; 274 /* 275 * Every divisor is a factor of 11*12 276 */ 277 #define SR_MULT (11*12) 278 #define A(x) (SR_MULT/x) 279 static const unsigned char sr_adc_mult_table[] = { 280 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1), 281 A(2), A(2), A(11), A(11), 0, 0, 0, A(1) 282 }; 283 static const unsigned char sr_dac_mult_table[] = { 284 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1), 285 A(2), A(11), A(2), A(11), 0, 0, 0, A(1) 286 }; 287 288 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, 289 int dac, int dac_l, int dac_h, int need_dac) 290 { 291 if ((adc >= adc_l) && (adc <= adc_h) && 292 (dac >= dac_l) && (dac <= dac_h)) { 293 int diff_adc = need_adc - adc; 294 int diff_dac = need_dac - dac; 295 return abs(diff_adc) + abs(diff_dac); 296 } 297 return UINT_MAX; 298 } 299 300 static int find_rate(int mclk, u32 need_adc, u32 need_dac) 301 { 302 int i, j; 303 int best_i = -1; 304 int best_j = -1; 305 int best_div = 0; 306 unsigned best_score = UINT_MAX; 307 int adc_l, adc_h, dac_l, dac_h; 308 309 need_adc *= SR_MULT; 310 need_dac *= SR_MULT; 311 /* 312 * rates given are +/- 1/32 313 */ 314 adc_l = need_adc - (need_adc >> 5); 315 adc_h = need_adc + (need_adc >> 5); 316 dac_l = need_dac - (need_dac >> 5); 317 dac_h = need_dac + (need_dac >> 5); 318 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { 319 int base = mclk / bosr_usb_divisor_table[i]; 320 int mask = sr_valid_mask[i]; 321 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); 322 j++, mask >>= 1) { 323 int adc; 324 int dac; 325 int score; 326 if ((mask & 1) == 0) 327 continue; 328 adc = base * sr_adc_mult_table[j]; 329 dac = base * sr_dac_mult_table[j]; 330 score = get_score(adc, adc_l, adc_h, need_adc, 331 dac, dac_l, dac_h, need_dac); 332 if (best_score > score) { 333 best_score = score; 334 best_i = i; 335 best_j = j; 336 best_div = 0; 337 } 338 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 339 (dac >> 1), dac_l, dac_h, need_dac); 340 /* prefer to have a /2 */ 341 if ((score != UINT_MAX) && (best_score >= score)) { 342 best_score = score; 343 best_i = i; 344 best_j = j; 345 best_div = 1; 346 } 347 } 348 } 349 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 350 } 351 352 #ifdef DEBUG 353 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 354 u32 *sample_rate_adc, u32 *sample_rate_dac) 355 { 356 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); 357 int sr = (src >> 2) & 0x0f; 358 int val = (mclk / bosr_usb_divisor_table[src & 3]); 359 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 360 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 361 if (src & TLV320AIC23_CLKIN_HALF) { 362 adc >>= 1; 363 dac >>= 1; 364 } 365 *sample_rate_adc = adc; 366 *sample_rate_dac = dac; 367 } 368 #endif 369 370 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 371 u32 sample_rate_adc, u32 sample_rate_dac) 372 { 373 /* Search for the right sample rate */ 374 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 375 if (data < 0) { 376 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 377 __func__, sample_rate_adc, sample_rate_dac); 378 return -EINVAL; 379 } 380 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 381 #ifdef DEBUG 382 { 383 u32 adc, dac; 384 get_current_sample_rates(codec, mclk, &adc, &dac); 385 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 386 adc, dac, data); 387 } 388 #endif 389 return 0; 390 } 391 392 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) 393 { 394 struct snd_soc_dapm_context *dapm = &codec->dapm; 395 396 snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets, 397 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 398 /* set up audio path interconnects */ 399 snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); 400 401 return 0; 402 } 403 404 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 405 struct snd_pcm_hw_params *params, 406 struct snd_soc_dai *dai) 407 { 408 struct snd_soc_pcm_runtime *rtd = substream->private_data; 409 struct snd_soc_codec *codec = rtd->codec; 410 u16 iface_reg; 411 int ret; 412 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 413 u32 sample_rate_adc = aic23->requested_adc; 414 u32 sample_rate_dac = aic23->requested_dac; 415 u32 sample_rate = params_rate(params); 416 417 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 418 aic23->requested_dac = sample_rate_dac = sample_rate; 419 if (!sample_rate_adc) 420 sample_rate_adc = sample_rate; 421 } else { 422 aic23->requested_adc = sample_rate_adc = sample_rate; 423 if (!sample_rate_dac) 424 sample_rate_dac = sample_rate; 425 } 426 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 427 sample_rate_dac); 428 if (ret < 0) 429 return ret; 430 431 iface_reg = 432 tlv320aic23_read_reg_cache(codec, 433 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 434 switch (params_format(params)) { 435 case SNDRV_PCM_FORMAT_S16_LE: 436 break; 437 case SNDRV_PCM_FORMAT_S20_3LE: 438 iface_reg |= (0x01 << 2); 439 break; 440 case SNDRV_PCM_FORMAT_S24_LE: 441 iface_reg |= (0x02 << 2); 442 break; 443 case SNDRV_PCM_FORMAT_S32_LE: 444 iface_reg |= (0x03 << 2); 445 break; 446 } 447 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 448 449 return 0; 450 } 451 452 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, 453 struct snd_soc_dai *dai) 454 { 455 struct snd_soc_pcm_runtime *rtd = substream->private_data; 456 struct snd_soc_codec *codec = rtd->codec; 457 458 /* set active */ 459 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 460 461 return 0; 462 } 463 464 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, 465 struct snd_soc_dai *dai) 466 { 467 struct snd_soc_pcm_runtime *rtd = substream->private_data; 468 struct snd_soc_codec *codec = rtd->codec; 469 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 470 471 /* deactivate */ 472 if (!codec->active) { 473 udelay(50); 474 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 475 } 476 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 477 aic23->requested_dac = 0; 478 else 479 aic23->requested_adc = 0; 480 } 481 482 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 483 { 484 struct snd_soc_codec *codec = dai->codec; 485 u16 reg; 486 487 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 488 if (mute) 489 reg |= TLV320AIC23_DACM_MUTE; 490 491 else 492 reg &= ~TLV320AIC23_DACM_MUTE; 493 494 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 495 496 return 0; 497 } 498 499 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 500 unsigned int fmt) 501 { 502 struct snd_soc_codec *codec = codec_dai->codec; 503 u16 iface_reg; 504 505 iface_reg = 506 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 507 508 /* set master/slave audio interface */ 509 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 510 case SND_SOC_DAIFMT_CBM_CFM: 511 iface_reg |= TLV320AIC23_MS_MASTER; 512 break; 513 case SND_SOC_DAIFMT_CBS_CFS: 514 break; 515 default: 516 return -EINVAL; 517 518 } 519 520 /* interface format */ 521 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 522 case SND_SOC_DAIFMT_I2S: 523 iface_reg |= TLV320AIC23_FOR_I2S; 524 break; 525 case SND_SOC_DAIFMT_DSP_A: 526 iface_reg |= TLV320AIC23_LRP_ON; 527 case SND_SOC_DAIFMT_DSP_B: 528 iface_reg |= TLV320AIC23_FOR_DSP; 529 break; 530 case SND_SOC_DAIFMT_RIGHT_J: 531 break; 532 case SND_SOC_DAIFMT_LEFT_J: 533 iface_reg |= TLV320AIC23_FOR_LJUST; 534 break; 535 default: 536 return -EINVAL; 537 538 } 539 540 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 541 542 return 0; 543 } 544 545 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 546 int clk_id, unsigned int freq, int dir) 547 { 548 struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai); 549 aic23->mclk = freq; 550 return 0; 551 } 552 553 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 554 enum snd_soc_bias_level level) 555 { 556 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 557 558 switch (level) { 559 case SND_SOC_BIAS_ON: 560 /* vref/mid, osc on, dac unmute */ 561 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \ 562 TLV320AIC23_DAC_OFF); 563 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 564 break; 565 case SND_SOC_BIAS_PREPARE: 566 break; 567 case SND_SOC_BIAS_STANDBY: 568 /* everything off except vref/vmid, */ 569 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | \ 570 TLV320AIC23_CLK_OFF); 571 break; 572 case SND_SOC_BIAS_OFF: 573 /* everything off, dac mute, inactive */ 574 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 575 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 576 break; 577 } 578 codec->dapm.bias_level = level; 579 return 0; 580 } 581 582 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 583 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 584 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 585 586 static struct snd_soc_dai_ops tlv320aic23_dai_ops = { 587 .prepare = tlv320aic23_pcm_prepare, 588 .hw_params = tlv320aic23_hw_params, 589 .shutdown = tlv320aic23_shutdown, 590 .digital_mute = tlv320aic23_mute, 591 .set_fmt = tlv320aic23_set_dai_fmt, 592 .set_sysclk = tlv320aic23_set_dai_sysclk, 593 }; 594 595 static struct snd_soc_dai_driver tlv320aic23_dai = { 596 .name = "tlv320aic23-hifi", 597 .playback = { 598 .stream_name = "Playback", 599 .channels_min = 2, 600 .channels_max = 2, 601 .rates = AIC23_RATES, 602 .formats = AIC23_FORMATS,}, 603 .capture = { 604 .stream_name = "Capture", 605 .channels_min = 2, 606 .channels_max = 2, 607 .rates = AIC23_RATES, 608 .formats = AIC23_FORMATS,}, 609 .ops = &tlv320aic23_dai_ops, 610 }; 611 612 static int tlv320aic23_suspend(struct snd_soc_codec *codec, 613 pm_message_t state) 614 { 615 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 616 617 return 0; 618 } 619 620 static int tlv320aic23_resume(struct snd_soc_codec *codec) 621 { 622 u16 reg; 623 624 /* Sync reg_cache with the hardware */ 625 for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) { 626 u16 val = tlv320aic23_read_reg_cache(codec, reg); 627 tlv320aic23_write(codec, reg, val); 628 } 629 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 630 631 return 0; 632 } 633 634 static int tlv320aic23_probe(struct snd_soc_codec *codec) 635 { 636 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec); 637 int reg; 638 639 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 640 codec->control_data = aic23->control_data; 641 codec->hw_write = (hw_write_t)i2c_master_send; 642 codec->hw_read = NULL; 643 644 /* Reset codec */ 645 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 646 647 /* power on device */ 648 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 649 650 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 651 652 /* Unmute input */ 653 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 654 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 655 (reg & (~TLV320AIC23_LIM_MUTED)) | 656 (TLV320AIC23_LRS_ENABLED)); 657 658 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 659 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 660 (reg & (~TLV320AIC23_LIM_MUTED)) | 661 TLV320AIC23_LRS_ENABLED); 662 663 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 664 tlv320aic23_write(codec, TLV320AIC23_ANLG, 665 (reg) & (~TLV320AIC23_BYPASS_ON) & 666 (~TLV320AIC23_MICM_MUTED)); 667 668 /* Default output volume */ 669 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 670 TLV320AIC23_DEFAULT_OUT_VOL & 671 TLV320AIC23_OUT_VOL_MASK); 672 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 673 TLV320AIC23_DEFAULT_OUT_VOL & 674 TLV320AIC23_OUT_VOL_MASK); 675 676 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 677 678 snd_soc_add_controls(codec, tlv320aic23_snd_controls, 679 ARRAY_SIZE(tlv320aic23_snd_controls)); 680 tlv320aic23_add_widgets(codec); 681 682 return 0; 683 } 684 685 static int tlv320aic23_remove(struct snd_soc_codec *codec) 686 { 687 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 688 return 0; 689 } 690 691 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = { 692 .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg), 693 .reg_word_size = sizeof(u16), 694 .reg_cache_default = tlv320aic23_reg, 695 .probe = tlv320aic23_probe, 696 .remove = tlv320aic23_remove, 697 .suspend = tlv320aic23_suspend, 698 .resume = tlv320aic23_resume, 699 .read = tlv320aic23_read_reg_cache, 700 .write = tlv320aic23_write, 701 .set_bias_level = tlv320aic23_set_bias_level, 702 }; 703 704 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 705 /* 706 * If the i2c layer weren't so broken, we could pass this kind of data 707 * around 708 */ 709 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 710 const struct i2c_device_id *i2c_id) 711 { 712 struct aic23 *aic23; 713 int ret; 714 715 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 716 return -EINVAL; 717 718 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 719 if (aic23 == NULL) 720 return -ENOMEM; 721 722 i2c_set_clientdata(i2c, aic23); 723 aic23->control_data = i2c; 724 aic23->control_type = SND_SOC_I2C; 725 726 ret = snd_soc_register_codec(&i2c->dev, 727 &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1); 728 if (ret < 0) 729 kfree(aic23); 730 return ret; 731 } 732 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 733 { 734 snd_soc_unregister_codec(&i2c->dev); 735 kfree(i2c_get_clientdata(i2c)); 736 return 0; 737 } 738 739 static const struct i2c_device_id tlv320aic23_id[] = { 740 {"tlv320aic23", 0}, 741 {} 742 }; 743 744 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 745 746 static struct i2c_driver tlv320aic23_i2c_driver = { 747 .driver = { 748 .name = "tlv320aic23-codec", 749 }, 750 .probe = tlv320aic23_codec_probe, 751 .remove = __exit_p(tlv320aic23_i2c_remove), 752 .id_table = tlv320aic23_id, 753 }; 754 755 #endif 756 757 static int __init tlv320aic23_modinit(void) 758 { 759 int ret; 760 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 761 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 762 if (ret != 0) { 763 printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n", 764 ret); 765 } 766 #endif 767 return ret; 768 } 769 module_init(tlv320aic23_modinit); 770 771 static void __exit tlv320aic23_exit(void) 772 { 773 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 774 i2c_del_driver(&tlv320aic23_i2c_driver); 775 #endif 776 } 777 module_exit(tlv320aic23_exit); 778 779 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 780 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 781 MODULE_LICENSE("GPL"); 782