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 struct snd_soc_codec codec; 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_add_widgets(struct snd_soc_codec *codec) 392 { 393 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 394 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 395 396 /* set up audio path interconnects */ 397 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); 398 399 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_A: 527 iface_reg |= TLV320AIC23_LRP_ON; 528 case SND_SOC_DAIFMT_DSP_B: 529 iface_reg |= TLV320AIC23_FOR_DSP; 530 break; 531 case SND_SOC_DAIFMT_RIGHT_J: 532 break; 533 case SND_SOC_DAIFMT_LEFT_J: 534 iface_reg |= TLV320AIC23_FOR_LJUST; 535 break; 536 default: 537 return -EINVAL; 538 539 } 540 541 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 542 543 return 0; 544 } 545 546 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 547 int clk_id, unsigned int freq, int dir) 548 { 549 struct snd_soc_codec *codec = codec_dai->codec; 550 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 551 aic23->mclk = freq; 552 return 0; 553 } 554 555 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 556 enum snd_soc_bias_level level) 557 { 558 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 559 560 switch (level) { 561 case SND_SOC_BIAS_ON: 562 /* vref/mid, osc on, dac unmute */ 563 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \ 564 TLV320AIC23_DAC_OFF); 565 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 566 break; 567 case SND_SOC_BIAS_PREPARE: 568 break; 569 case SND_SOC_BIAS_STANDBY: 570 /* everything off except vref/vmid, */ 571 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | \ 572 TLV320AIC23_CLK_OFF); 573 break; 574 case SND_SOC_BIAS_OFF: 575 /* everything off, dac mute, inactive */ 576 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 577 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 578 break; 579 } 580 codec->bias_level = level; 581 return 0; 582 } 583 584 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 585 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 586 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 587 588 static struct snd_soc_dai_ops tlv320aic23_dai_ops = { 589 .prepare = tlv320aic23_pcm_prepare, 590 .hw_params = tlv320aic23_hw_params, 591 .shutdown = tlv320aic23_shutdown, 592 .digital_mute = tlv320aic23_mute, 593 .set_fmt = tlv320aic23_set_dai_fmt, 594 .set_sysclk = tlv320aic23_set_dai_sysclk, 595 }; 596 597 struct snd_soc_dai tlv320aic23_dai = { 598 .name = "tlv320aic23", 599 .playback = { 600 .stream_name = "Playback", 601 .channels_min = 2, 602 .channels_max = 2, 603 .rates = AIC23_RATES, 604 .formats = AIC23_FORMATS,}, 605 .capture = { 606 .stream_name = "Capture", 607 .channels_min = 2, 608 .channels_max = 2, 609 .rates = AIC23_RATES, 610 .formats = AIC23_FORMATS,}, 611 .ops = &tlv320aic23_dai_ops, 612 }; 613 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 614 615 static int tlv320aic23_suspend(struct platform_device *pdev, 616 pm_message_t state) 617 { 618 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 619 struct snd_soc_codec *codec = socdev->card->codec; 620 621 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 622 623 return 0; 624 } 625 626 static int tlv320aic23_resume(struct platform_device *pdev) 627 { 628 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 629 struct snd_soc_codec *codec = socdev->card->codec; 630 u16 reg; 631 632 /* Sync reg_cache with the hardware */ 633 for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) { 634 u16 val = tlv320aic23_read_reg_cache(codec, reg); 635 tlv320aic23_write(codec, reg, val); 636 } 637 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 638 639 return 0; 640 } 641 642 /* 643 * initialise the AIC23 driver 644 * register the mixer and dsp interfaces with the kernel 645 */ 646 static int tlv320aic23_init(struct snd_soc_device *socdev) 647 { 648 struct snd_soc_codec *codec = socdev->card->codec; 649 int ret = 0; 650 u16 reg; 651 652 codec->name = "tlv320aic23"; 653 codec->owner = THIS_MODULE; 654 codec->read = tlv320aic23_read_reg_cache; 655 codec->write = tlv320aic23_write; 656 codec->set_bias_level = tlv320aic23_set_bias_level; 657 codec->dai = &tlv320aic23_dai; 658 codec->num_dai = 1; 659 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 660 codec->reg_cache = 661 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 662 if (codec->reg_cache == NULL) 663 return -ENOMEM; 664 665 /* Reset codec */ 666 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 667 668 /* register pcms */ 669 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 670 if (ret < 0) { 671 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 672 goto pcm_err; 673 } 674 675 /* power on device */ 676 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 677 678 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 679 680 /* Unmute input */ 681 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 682 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 683 (reg & (~TLV320AIC23_LIM_MUTED)) | 684 (TLV320AIC23_LRS_ENABLED)); 685 686 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 687 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 688 (reg & (~TLV320AIC23_LIM_MUTED)) | 689 TLV320AIC23_LRS_ENABLED); 690 691 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 692 tlv320aic23_write(codec, TLV320AIC23_ANLG, 693 (reg) & (~TLV320AIC23_BYPASS_ON) & 694 (~TLV320AIC23_MICM_MUTED)); 695 696 /* Default output volume */ 697 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 698 TLV320AIC23_DEFAULT_OUT_VOL & 699 TLV320AIC23_OUT_VOL_MASK); 700 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 701 TLV320AIC23_DEFAULT_OUT_VOL & 702 TLV320AIC23_OUT_VOL_MASK); 703 704 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 705 706 snd_soc_add_controls(codec, tlv320aic23_snd_controls, 707 ARRAY_SIZE(tlv320aic23_snd_controls)); 708 tlv320aic23_add_widgets(codec); 709 710 return ret; 711 712 pcm_err: 713 kfree(codec->reg_cache); 714 return ret; 715 } 716 static struct snd_soc_device *tlv320aic23_socdev; 717 718 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 719 /* 720 * If the i2c layer weren't so broken, we could pass this kind of data 721 * around 722 */ 723 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 724 const struct i2c_device_id *i2c_id) 725 { 726 struct snd_soc_device *socdev = tlv320aic23_socdev; 727 struct snd_soc_codec *codec = socdev->card->codec; 728 int ret; 729 730 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 731 return -EINVAL; 732 733 i2c_set_clientdata(i2c, codec); 734 codec->control_data = i2c; 735 736 ret = tlv320aic23_init(socdev); 737 if (ret < 0) { 738 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 739 goto err; 740 } 741 return ret; 742 743 err: 744 kfree(codec); 745 kfree(i2c); 746 return ret; 747 } 748 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 749 { 750 put_device(&i2c->dev); 751 return 0; 752 } 753 754 static const struct i2c_device_id tlv320aic23_id[] = { 755 {"tlv320aic23", 0}, 756 {} 757 }; 758 759 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 760 761 static struct i2c_driver tlv320aic23_i2c_driver = { 762 .driver = { 763 .name = "tlv320aic23", 764 }, 765 .probe = tlv320aic23_codec_probe, 766 .remove = __exit_p(tlv320aic23_i2c_remove), 767 .id_table = tlv320aic23_id, 768 }; 769 770 #endif 771 772 static int tlv320aic23_probe(struct platform_device *pdev) 773 { 774 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 775 struct snd_soc_codec *codec; 776 struct aic23 *aic23; 777 int ret = 0; 778 779 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 780 781 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 782 if (aic23 == NULL) 783 return -ENOMEM; 784 codec = &aic23->codec; 785 socdev->card->codec = codec; 786 mutex_init(&codec->mutex); 787 INIT_LIST_HEAD(&codec->dapm_widgets); 788 INIT_LIST_HEAD(&codec->dapm_paths); 789 790 tlv320aic23_socdev = socdev; 791 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 792 codec->hw_write = (hw_write_t) i2c_master_send; 793 codec->hw_read = NULL; 794 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 795 if (ret != 0) 796 printk(KERN_ERR "can't add i2c driver"); 797 #endif 798 return ret; 799 } 800 801 static int tlv320aic23_remove(struct platform_device *pdev) 802 { 803 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 804 struct snd_soc_codec *codec = socdev->card->codec; 805 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 806 807 if (codec->control_data) 808 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 809 810 snd_soc_free_pcms(socdev); 811 snd_soc_dapm_free(socdev); 812 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 813 i2c_del_driver(&tlv320aic23_i2c_driver); 814 #endif 815 kfree(codec->reg_cache); 816 kfree(aic23); 817 818 return 0; 819 } 820 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 821 .probe = tlv320aic23_probe, 822 .remove = tlv320aic23_remove, 823 .suspend = tlv320aic23_suspend, 824 .resume = tlv320aic23_resume, 825 }; 826 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 827 828 static int __init tlv320aic23_modinit(void) 829 { 830 return snd_soc_register_dai(&tlv320aic23_dai); 831 } 832 module_init(tlv320aic23_modinit); 833 834 static void __exit tlv320aic23_exit(void) 835 { 836 snd_soc_unregister_dai(&tlv320aic23_dai); 837 } 838 module_exit(tlv320aic23_exit); 839 840 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 841 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 842 MODULE_LICENSE("GPL"); 843