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 > 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 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, /* Usb, bosr - 0*/ 269 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 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) (SR_MULT/x) 277 static const unsigned char sr_adc_mult_table[] = { 278 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1), 279 A(2), A(2), A(11), A(11), 0, 0, 0, A(1) 280 }; 281 static const unsigned char sr_dac_mult_table[] = { 282 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1), 283 A(2), A(11), A(2), A(11), 0, 0, 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 return 0; 399 } 400 401 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 402 struct snd_pcm_hw_params *params, 403 struct snd_soc_dai *dai) 404 { 405 struct snd_soc_pcm_runtime *rtd = substream->private_data; 406 struct snd_soc_device *socdev = rtd->socdev; 407 struct snd_soc_codec *codec = socdev->card->codec; 408 u16 iface_reg; 409 int ret; 410 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 411 u32 sample_rate_adc = aic23->requested_adc; 412 u32 sample_rate_dac = aic23->requested_dac; 413 u32 sample_rate = params_rate(params); 414 415 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 416 aic23->requested_dac = sample_rate_dac = sample_rate; 417 if (!sample_rate_adc) 418 sample_rate_adc = sample_rate; 419 } else { 420 aic23->requested_adc = sample_rate_adc = sample_rate; 421 if (!sample_rate_dac) 422 sample_rate_dac = sample_rate; 423 } 424 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 425 sample_rate_dac); 426 if (ret < 0) 427 return ret; 428 429 iface_reg = 430 tlv320aic23_read_reg_cache(codec, 431 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 432 switch (params_format(params)) { 433 case SNDRV_PCM_FORMAT_S16_LE: 434 break; 435 case SNDRV_PCM_FORMAT_S20_3LE: 436 iface_reg |= (0x01 << 2); 437 break; 438 case SNDRV_PCM_FORMAT_S24_LE: 439 iface_reg |= (0x02 << 2); 440 break; 441 case SNDRV_PCM_FORMAT_S32_LE: 442 iface_reg |= (0x03 << 2); 443 break; 444 } 445 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 446 447 return 0; 448 } 449 450 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, 451 struct snd_soc_dai *dai) 452 { 453 struct snd_soc_pcm_runtime *rtd = substream->private_data; 454 struct snd_soc_device *socdev = rtd->socdev; 455 struct snd_soc_codec *codec = socdev->card->codec; 456 457 /* set active */ 458 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 459 460 return 0; 461 } 462 463 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, 464 struct snd_soc_dai *dai) 465 { 466 struct snd_soc_pcm_runtime *rtd = substream->private_data; 467 struct snd_soc_device *socdev = rtd->socdev; 468 struct snd_soc_codec *codec = socdev->card->codec; 469 struct aic23 *aic23 = container_of(codec, struct aic23, 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 snd_soc_codec *codec = codec_dai->codec; 549 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 550 aic23->mclk = freq; 551 return 0; 552 } 553 554 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 555 enum snd_soc_bias_level level) 556 { 557 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 558 559 switch (level) { 560 case SND_SOC_BIAS_ON: 561 /* vref/mid, osc on, dac unmute */ 562 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 563 break; 564 case SND_SOC_BIAS_PREPARE: 565 break; 566 case SND_SOC_BIAS_STANDBY: 567 /* everything off except vref/vmid, */ 568 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 569 break; 570 case SND_SOC_BIAS_OFF: 571 /* everything off, dac mute, inactive */ 572 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 573 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 574 break; 575 } 576 codec->bias_level = level; 577 return 0; 578 } 579 580 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 581 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 582 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 583 584 static struct snd_soc_dai_ops tlv320aic23_dai_ops = { 585 .prepare = tlv320aic23_pcm_prepare, 586 .hw_params = tlv320aic23_hw_params, 587 .shutdown = tlv320aic23_shutdown, 588 .digital_mute = tlv320aic23_mute, 589 .set_fmt = tlv320aic23_set_dai_fmt, 590 .set_sysclk = tlv320aic23_set_dai_sysclk, 591 }; 592 593 struct snd_soc_dai tlv320aic23_dai = { 594 .name = "tlv320aic23", 595 .playback = { 596 .stream_name = "Playback", 597 .channels_min = 2, 598 .channels_max = 2, 599 .rates = AIC23_RATES, 600 .formats = AIC23_FORMATS,}, 601 .capture = { 602 .stream_name = "Capture", 603 .channels_min = 2, 604 .channels_max = 2, 605 .rates = AIC23_RATES, 606 .formats = AIC23_FORMATS,}, 607 .ops = &tlv320aic23_dai_ops, 608 }; 609 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 610 611 static int tlv320aic23_suspend(struct platform_device *pdev, 612 pm_message_t state) 613 { 614 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 615 struct snd_soc_codec *codec = socdev->card->codec; 616 617 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 618 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 619 620 return 0; 621 } 622 623 static int tlv320aic23_resume(struct platform_device *pdev) 624 { 625 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 626 struct snd_soc_codec *codec = socdev->card->codec; 627 u16 reg; 628 629 /* Sync reg_cache with the hardware */ 630 for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) { 631 u16 val = tlv320aic23_read_reg_cache(codec, reg); 632 tlv320aic23_write(codec, reg, val); 633 } 634 635 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 636 637 return 0; 638 } 639 640 /* 641 * initialise the AIC23 driver 642 * register the mixer and dsp interfaces with the kernel 643 */ 644 static int tlv320aic23_init(struct snd_soc_device *socdev) 645 { 646 struct snd_soc_codec *codec = socdev->card->codec; 647 int ret = 0; 648 u16 reg; 649 650 codec->name = "tlv320aic23"; 651 codec->owner = THIS_MODULE; 652 codec->read = tlv320aic23_read_reg_cache; 653 codec->write = tlv320aic23_write; 654 codec->set_bias_level = tlv320aic23_set_bias_level; 655 codec->dai = &tlv320aic23_dai; 656 codec->num_dai = 1; 657 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 658 codec->reg_cache = 659 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 660 if (codec->reg_cache == NULL) 661 return -ENOMEM; 662 663 /* Reset codec */ 664 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 665 666 /* register pcms */ 667 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 668 if (ret < 0) { 669 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 670 goto pcm_err; 671 } 672 673 /* power on device */ 674 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 675 676 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 677 678 /* Unmute input */ 679 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 680 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 681 (reg & (~TLV320AIC23_LIM_MUTED)) | 682 (TLV320AIC23_LRS_ENABLED)); 683 684 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 685 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 686 (reg & (~TLV320AIC23_LIM_MUTED)) | 687 TLV320AIC23_LRS_ENABLED); 688 689 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 690 tlv320aic23_write(codec, TLV320AIC23_ANLG, 691 (reg) & (~TLV320AIC23_BYPASS_ON) & 692 (~TLV320AIC23_MICM_MUTED)); 693 694 /* Default output volume */ 695 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 696 TLV320AIC23_DEFAULT_OUT_VOL & 697 TLV320AIC23_OUT_VOL_MASK); 698 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 699 TLV320AIC23_DEFAULT_OUT_VOL & 700 TLV320AIC23_OUT_VOL_MASK); 701 702 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 703 704 snd_soc_add_controls(codec, tlv320aic23_snd_controls, 705 ARRAY_SIZE(tlv320aic23_snd_controls)); 706 tlv320aic23_add_widgets(codec); 707 708 return ret; 709 710 pcm_err: 711 kfree(codec->reg_cache); 712 return ret; 713 } 714 static struct snd_soc_device *tlv320aic23_socdev; 715 716 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 717 /* 718 * If the i2c layer weren't so broken, we could pass this kind of data 719 * around 720 */ 721 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 722 const struct i2c_device_id *i2c_id) 723 { 724 struct snd_soc_device *socdev = tlv320aic23_socdev; 725 struct snd_soc_codec *codec = socdev->card->codec; 726 int ret; 727 728 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 729 return -EINVAL; 730 731 i2c_set_clientdata(i2c, codec); 732 codec->control_data = i2c; 733 734 ret = tlv320aic23_init(socdev); 735 if (ret < 0) { 736 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 737 goto err; 738 } 739 return ret; 740 741 err: 742 kfree(codec); 743 kfree(i2c); 744 return ret; 745 } 746 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 747 { 748 put_device(&i2c->dev); 749 return 0; 750 } 751 752 static const struct i2c_device_id tlv320aic23_id[] = { 753 {"tlv320aic23", 0}, 754 {} 755 }; 756 757 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 758 759 static struct i2c_driver tlv320aic23_i2c_driver = { 760 .driver = { 761 .name = "tlv320aic23", 762 }, 763 .probe = tlv320aic23_codec_probe, 764 .remove = __exit_p(tlv320aic23_i2c_remove), 765 .id_table = tlv320aic23_id, 766 }; 767 768 #endif 769 770 static int tlv320aic23_probe(struct platform_device *pdev) 771 { 772 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 773 struct snd_soc_codec *codec; 774 struct aic23 *aic23; 775 int ret = 0; 776 777 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 778 779 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 780 if (aic23 == NULL) 781 return -ENOMEM; 782 codec = &aic23->codec; 783 socdev->card->codec = codec; 784 mutex_init(&codec->mutex); 785 INIT_LIST_HEAD(&codec->dapm_widgets); 786 INIT_LIST_HEAD(&codec->dapm_paths); 787 788 tlv320aic23_socdev = socdev; 789 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 790 codec->hw_write = (hw_write_t) i2c_master_send; 791 codec->hw_read = NULL; 792 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 793 if (ret != 0) 794 printk(KERN_ERR "can't add i2c driver"); 795 #endif 796 return ret; 797 } 798 799 static int tlv320aic23_remove(struct platform_device *pdev) 800 { 801 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 802 struct snd_soc_codec *codec = socdev->card->codec; 803 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 804 805 if (codec->control_data) 806 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 807 808 snd_soc_free_pcms(socdev); 809 snd_soc_dapm_free(socdev); 810 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 811 i2c_del_driver(&tlv320aic23_i2c_driver); 812 #endif 813 kfree(codec->reg_cache); 814 kfree(aic23); 815 816 return 0; 817 } 818 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 819 .probe = tlv320aic23_probe, 820 .remove = tlv320aic23_remove, 821 .suspend = tlv320aic23_suspend, 822 .resume = tlv320aic23_resume, 823 }; 824 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 825 826 static int __init tlv320aic23_modinit(void) 827 { 828 return snd_soc_register_dai(&tlv320aic23_dai); 829 } 830 module_init(tlv320aic23_modinit); 831 832 static void __exit tlv320aic23_exit(void) 833 { 834 snd_soc_unregister_dai(&tlv320aic23_dai); 835 } 836 module_exit(tlv320aic23_exit); 837 838 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 839 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 840 MODULE_LICENSE("GPL"); 841