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 <sound/core.h> 29 #include <sound/pcm.h> 30 #include <sound/pcm_params.h> 31 #include <sound/soc.h> 32 #include <sound/soc-dapm.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 < 0 || reg > 9) && (reg != 15)) { 89 printk(KERN_WARNING "%s Invalid register R%d\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%d\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 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 struct snd_soc_codec codec; 243 int mclk; 244 int requested_adc; 245 int requested_dac; 246 }; 247 248 /* 249 * Common Crystals used 250 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k 251 * 12.0000 Mhz /125 = *96k /136 = 88.235K 252 * 12.2880 Mhz /128 = *96k /192 = 64k 253 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k 254 * 18.4320 Mhz /128 = 144k /192 = *96k 255 */ 256 257 /* 258 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 259 * USB BOSR 0-250/2 = 125, 1-272/2 = 136 260 */ 261 static const int bosr_usb_divisor_table[] = { 262 128, 125, 192, 136 263 }; 264 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) 265 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) 266 static const unsigned short sr_valid_mask[] = { 267 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ 268 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 269 LOWER_GROUP, /* Usb, bosr - 0*/ 270 UPPER_GROUP, /* Usb, bosr - 1*/ 271 }; 272 /* 273 * Every divisor is a factor of 11*12 274 */ 275 #define SR_MULT (11*12) 276 #define A(x) (x) ? (SR_MULT/x) : 0 277 static const unsigned char sr_adc_mult_table[] = { 278 A(2), A(2), A(12), A(12), A(0), A(0), A(3), A(1), 279 A(2), A(2), A(11), A(11), A(0), A(0), A(0), A(1) 280 }; 281 static const unsigned char sr_dac_mult_table[] = { 282 A(2), A(12), A(2), A(12), A(0), A(0), A(3), A(1), 283 A(2), A(11), A(2), A(11), A(0), A(0), A(0), A(1) 284 }; 285 286 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, 287 int dac, int dac_l, int dac_h, int need_dac) 288 { 289 if ((adc >= adc_l) && (adc <= adc_h) && 290 (dac >= dac_l) && (dac <= dac_h)) { 291 int diff_adc = need_adc - adc; 292 int diff_dac = need_dac - dac; 293 return abs(diff_adc) + abs(diff_dac); 294 } 295 return UINT_MAX; 296 } 297 298 static int find_rate(int mclk, u32 need_adc, u32 need_dac) 299 { 300 int i, j; 301 int best_i = -1; 302 int best_j = -1; 303 int best_div = 0; 304 unsigned best_score = UINT_MAX; 305 int adc_l, adc_h, dac_l, dac_h; 306 307 need_adc *= SR_MULT; 308 need_dac *= SR_MULT; 309 /* 310 * rates given are +/- 1/32 311 */ 312 adc_l = need_adc - (need_adc >> 5); 313 adc_h = need_adc + (need_adc >> 5); 314 dac_l = need_dac - (need_dac >> 5); 315 dac_h = need_dac + (need_dac >> 5); 316 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { 317 int base = mclk / bosr_usb_divisor_table[i]; 318 int mask = sr_valid_mask[i]; 319 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); 320 j++, mask >>= 1) { 321 int adc; 322 int dac; 323 int score; 324 if ((mask & 1) == 0) 325 continue; 326 adc = base * sr_adc_mult_table[j]; 327 dac = base * sr_dac_mult_table[j]; 328 score = get_score(adc, adc_l, adc_h, need_adc, 329 dac, dac_l, dac_h, need_dac); 330 if (best_score > score) { 331 best_score = score; 332 best_i = i; 333 best_j = j; 334 best_div = 0; 335 } 336 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 337 (dac >> 1), dac_l, dac_h, need_dac); 338 /* prefer to have a /2 */ 339 if ((score != UINT_MAX) && (best_score >= score)) { 340 best_score = score; 341 best_i = i; 342 best_j = j; 343 best_div = 1; 344 } 345 } 346 } 347 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 348 } 349 350 #ifdef DEBUG 351 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 352 u32 *sample_rate_adc, u32 *sample_rate_dac) 353 { 354 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); 355 int sr = (src >> 2) & 0x0f; 356 int val = (mclk / bosr_usb_divisor_table[src & 3]); 357 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 358 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 359 if (src & TLV320AIC23_CLKIN_HALF) { 360 adc >>= 1; 361 dac >>= 1; 362 } 363 *sample_rate_adc = adc; 364 *sample_rate_dac = dac; 365 } 366 #endif 367 368 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 369 u32 sample_rate_adc, u32 sample_rate_dac) 370 { 371 /* Search for the right sample rate */ 372 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 373 if (data < 0) { 374 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 375 __func__, sample_rate_adc, sample_rate_dac); 376 return -EINVAL; 377 } 378 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 379 #ifdef DEBUG 380 { 381 u32 adc, dac; 382 get_current_sample_rates(codec, mclk, &adc, &dac); 383 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 384 adc, dac, data); 385 } 386 #endif 387 return 0; 388 } 389 390 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) 391 { 392 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 393 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 394 395 /* set up audio path interconnects */ 396 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); 397 398 snd_soc_dapm_new_widgets(codec); 399 return 0; 400 } 401 402 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 403 struct snd_pcm_hw_params *params, 404 struct snd_soc_dai *dai) 405 { 406 struct snd_soc_pcm_runtime *rtd = substream->private_data; 407 struct snd_soc_device *socdev = rtd->socdev; 408 struct snd_soc_codec *codec = socdev->card->codec; 409 u16 iface_reg; 410 int ret; 411 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 412 u32 sample_rate_adc = aic23->requested_adc; 413 u32 sample_rate_dac = aic23->requested_dac; 414 u32 sample_rate = params_rate(params); 415 416 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 417 aic23->requested_dac = sample_rate_dac = sample_rate; 418 if (!sample_rate_adc) 419 sample_rate_adc = sample_rate; 420 } else { 421 aic23->requested_adc = sample_rate_adc = sample_rate; 422 if (!sample_rate_dac) 423 sample_rate_dac = sample_rate; 424 } 425 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 426 sample_rate_dac); 427 if (ret < 0) 428 return ret; 429 430 iface_reg = 431 tlv320aic23_read_reg_cache(codec, 432 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 433 switch (params_format(params)) { 434 case SNDRV_PCM_FORMAT_S16_LE: 435 break; 436 case SNDRV_PCM_FORMAT_S20_3LE: 437 iface_reg |= (0x01 << 2); 438 break; 439 case SNDRV_PCM_FORMAT_S24_LE: 440 iface_reg |= (0x02 << 2); 441 break; 442 case SNDRV_PCM_FORMAT_S32_LE: 443 iface_reg |= (0x03 << 2); 444 break; 445 } 446 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 447 448 return 0; 449 } 450 451 static int tlv320aic23_pcm_prepare(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_device *socdev = rtd->socdev; 456 struct snd_soc_codec *codec = socdev->card->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_device *socdev = rtd->socdev; 469 struct snd_soc_codec *codec = socdev->card->codec; 470 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 471 472 /* deactivate */ 473 if (!codec->active) { 474 udelay(50); 475 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 476 } 477 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 478 aic23->requested_dac = 0; 479 else 480 aic23->requested_adc = 0; 481 } 482 483 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 484 { 485 struct snd_soc_codec *codec = dai->codec; 486 u16 reg; 487 488 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 489 if (mute) 490 reg |= TLV320AIC23_DACM_MUTE; 491 492 else 493 reg &= ~TLV320AIC23_DACM_MUTE; 494 495 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 496 497 return 0; 498 } 499 500 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 501 unsigned int fmt) 502 { 503 struct snd_soc_codec *codec = codec_dai->codec; 504 u16 iface_reg; 505 506 iface_reg = 507 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 508 509 /* set master/slave audio interface */ 510 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 511 case SND_SOC_DAIFMT_CBM_CFM: 512 iface_reg |= TLV320AIC23_MS_MASTER; 513 break; 514 case SND_SOC_DAIFMT_CBS_CFS: 515 break; 516 default: 517 return -EINVAL; 518 519 } 520 521 /* interface format */ 522 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 523 case SND_SOC_DAIFMT_I2S: 524 iface_reg |= TLV320AIC23_FOR_I2S; 525 break; 526 case SND_SOC_DAIFMT_DSP_B: 527 iface_reg |= TLV320AIC23_FOR_DSP; 528 break; 529 case SND_SOC_DAIFMT_RIGHT_J: 530 break; 531 case SND_SOC_DAIFMT_LEFT_J: 532 iface_reg |= TLV320AIC23_FOR_LJUST; 533 break; 534 default: 535 return -EINVAL; 536 537 } 538 539 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 540 541 return 0; 542 } 543 544 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 545 int clk_id, unsigned int freq, int dir) 546 { 547 struct snd_soc_codec *codec = codec_dai->codec; 548 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 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 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 562 break; 563 case SND_SOC_BIAS_PREPARE: 564 break; 565 case SND_SOC_BIAS_STANDBY: 566 /* everything off except vref/vmid, */ 567 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 568 break; 569 case SND_SOC_BIAS_OFF: 570 /* everything off, dac mute, inactive */ 571 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 572 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 573 break; 574 } 575 codec->bias_level = level; 576 return 0; 577 } 578 579 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 580 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 581 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 582 583 struct snd_soc_dai tlv320aic23_dai = { 584 .name = "tlv320aic23", 585 .playback = { 586 .stream_name = "Playback", 587 .channels_min = 2, 588 .channels_max = 2, 589 .rates = AIC23_RATES, 590 .formats = AIC23_FORMATS,}, 591 .capture = { 592 .stream_name = "Capture", 593 .channels_min = 2, 594 .channels_max = 2, 595 .rates = AIC23_RATES, 596 .formats = AIC23_FORMATS,}, 597 .ops = { 598 .prepare = tlv320aic23_pcm_prepare, 599 .hw_params = tlv320aic23_hw_params, 600 .shutdown = tlv320aic23_shutdown, 601 .digital_mute = tlv320aic23_mute, 602 .set_fmt = tlv320aic23_set_dai_fmt, 603 .set_sysclk = tlv320aic23_set_dai_sysclk, 604 } 605 }; 606 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 607 608 static int tlv320aic23_suspend(struct platform_device *pdev, 609 pm_message_t state) 610 { 611 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 612 struct snd_soc_codec *codec = socdev->card->codec; 613 614 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 615 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 616 617 return 0; 618 } 619 620 static int tlv320aic23_resume(struct platform_device *pdev) 621 { 622 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 623 struct snd_soc_codec *codec = socdev->card->codec; 624 int i; 625 u16 reg; 626 627 /* Sync reg_cache with the hardware */ 628 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { 629 u16 val = tlv320aic23_read_reg_cache(codec, reg); 630 tlv320aic23_write(codec, reg, val); 631 } 632 633 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 634 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); 635 636 return 0; 637 } 638 639 /* 640 * initialise the AIC23 driver 641 * register the mixer and dsp interfaces with the kernel 642 */ 643 static int tlv320aic23_init(struct snd_soc_device *socdev) 644 { 645 struct snd_soc_codec *codec = socdev->card->codec; 646 int ret = 0; 647 u16 reg; 648 649 codec->name = "tlv320aic23"; 650 codec->owner = THIS_MODULE; 651 codec->read = tlv320aic23_read_reg_cache; 652 codec->write = tlv320aic23_write; 653 codec->set_bias_level = tlv320aic23_set_bias_level; 654 codec->dai = &tlv320aic23_dai; 655 codec->num_dai = 1; 656 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 657 codec->reg_cache = 658 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 659 if (codec->reg_cache == NULL) 660 return -ENOMEM; 661 662 /* Reset codec */ 663 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 664 665 /* register pcms */ 666 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 667 if (ret < 0) { 668 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 669 goto pcm_err; 670 } 671 672 /* power on device */ 673 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 674 675 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 676 677 /* Unmute input */ 678 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 679 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 680 (reg & (~TLV320AIC23_LIM_MUTED)) | 681 (TLV320AIC23_LRS_ENABLED)); 682 683 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 684 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 685 (reg & (~TLV320AIC23_LIM_MUTED)) | 686 TLV320AIC23_LRS_ENABLED); 687 688 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 689 tlv320aic23_write(codec, TLV320AIC23_ANLG, 690 (reg) & (~TLV320AIC23_BYPASS_ON) & 691 (~TLV320AIC23_MICM_MUTED)); 692 693 /* Default output volume */ 694 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 695 TLV320AIC23_DEFAULT_OUT_VOL & 696 TLV320AIC23_OUT_VOL_MASK); 697 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 698 TLV320AIC23_DEFAULT_OUT_VOL & 699 TLV320AIC23_OUT_VOL_MASK); 700 701 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 702 703 snd_soc_add_controls(codec, tlv320aic23_snd_controls, 704 ARRAY_SIZE(tlv320aic23_snd_controls)); 705 tlv320aic23_add_widgets(codec); 706 ret = snd_soc_init_card(socdev); 707 if (ret < 0) { 708 printk(KERN_ERR "tlv320aic23: failed to register card\n"); 709 goto card_err; 710 } 711 712 return ret; 713 714 card_err: 715 snd_soc_free_pcms(socdev); 716 snd_soc_dapm_free(socdev); 717 pcm_err: 718 kfree(codec->reg_cache); 719 return ret; 720 } 721 static struct snd_soc_device *tlv320aic23_socdev; 722 723 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 724 /* 725 * If the i2c layer weren't so broken, we could pass this kind of data 726 * around 727 */ 728 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 729 const struct i2c_device_id *i2c_id) 730 { 731 struct snd_soc_device *socdev = tlv320aic23_socdev; 732 struct snd_soc_codec *codec = socdev->card->codec; 733 int ret; 734 735 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 736 return -EINVAL; 737 738 i2c_set_clientdata(i2c, codec); 739 codec->control_data = i2c; 740 741 ret = tlv320aic23_init(socdev); 742 if (ret < 0) { 743 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 744 goto err; 745 } 746 return ret; 747 748 err: 749 kfree(codec); 750 kfree(i2c); 751 return ret; 752 } 753 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 754 { 755 put_device(&i2c->dev); 756 return 0; 757 } 758 759 static const struct i2c_device_id tlv320aic23_id[] = { 760 {"tlv320aic23", 0}, 761 {} 762 }; 763 764 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 765 766 static struct i2c_driver tlv320aic23_i2c_driver = { 767 .driver = { 768 .name = "tlv320aic23", 769 }, 770 .probe = tlv320aic23_codec_probe, 771 .remove = __exit_p(tlv320aic23_i2c_remove), 772 .id_table = tlv320aic23_id, 773 }; 774 775 #endif 776 777 static int tlv320aic23_probe(struct platform_device *pdev) 778 { 779 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 780 struct snd_soc_codec *codec; 781 struct aic23 *aic23; 782 int ret = 0; 783 784 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 785 786 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 787 if (aic23 == NULL) 788 return -ENOMEM; 789 codec = &aic23->codec; 790 socdev->card->codec = codec; 791 mutex_init(&codec->mutex); 792 INIT_LIST_HEAD(&codec->dapm_widgets); 793 INIT_LIST_HEAD(&codec->dapm_paths); 794 795 tlv320aic23_socdev = socdev; 796 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 797 codec->hw_write = (hw_write_t) i2c_master_send; 798 codec->hw_read = NULL; 799 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 800 if (ret != 0) 801 printk(KERN_ERR "can't add i2c driver"); 802 #endif 803 return ret; 804 } 805 806 static int tlv320aic23_remove(struct platform_device *pdev) 807 { 808 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 809 struct snd_soc_codec *codec = socdev->card->codec; 810 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 811 812 if (codec->control_data) 813 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 814 815 snd_soc_free_pcms(socdev); 816 snd_soc_dapm_free(socdev); 817 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 818 i2c_del_driver(&tlv320aic23_i2c_driver); 819 #endif 820 kfree(codec->reg_cache); 821 kfree(aic23); 822 823 return 0; 824 } 825 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 826 .probe = tlv320aic23_probe, 827 .remove = tlv320aic23_remove, 828 .suspend = tlv320aic23_suspend, 829 .resume = tlv320aic23_resume, 830 }; 831 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 832 833 static int __init tlv320aic23_modinit(void) 834 { 835 return snd_soc_register_dai(&tlv320aic23_dai); 836 } 837 module_init(tlv320aic23_modinit); 838 839 static void __exit tlv320aic23_exit(void) 840 { 841 snd_soc_unregister_dai(&tlv320aic23_dai); 842 } 843 module_exit(tlv320aic23_exit); 844 845 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 846 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 847 MODULE_LICENSE("GPL"); 848