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 /* add non dapm controls */ 187 static int tlv320aic23_add_controls(struct snd_soc_codec *codec) 188 { 189 190 int err, i; 191 192 for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) { 193 err = snd_ctl_add(codec->card, 194 snd_soc_cnew(&tlv320aic23_snd_controls[i], 195 codec, NULL)); 196 if (err < 0) 197 return err; 198 } 199 200 return 0; 201 202 } 203 204 /* PGA Mixer controls for Line and Mic switch */ 205 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 206 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 207 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 208 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 209 }; 210 211 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 212 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 213 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 214 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 215 &tlv320aic23_rec_src_mux_controls), 216 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 217 &tlv320aic23_output_mixer_controls[0], 218 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 219 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 220 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 221 222 SND_SOC_DAPM_OUTPUT("LHPOUT"), 223 SND_SOC_DAPM_OUTPUT("RHPOUT"), 224 SND_SOC_DAPM_OUTPUT("LOUT"), 225 SND_SOC_DAPM_OUTPUT("ROUT"), 226 227 SND_SOC_DAPM_INPUT("LLINEIN"), 228 SND_SOC_DAPM_INPUT("RLINEIN"), 229 230 SND_SOC_DAPM_INPUT("MICIN"), 231 }; 232 233 static const struct snd_soc_dapm_route intercon[] = { 234 /* Output Mixer */ 235 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 236 {"Output Mixer", "Playback Switch", "DAC"}, 237 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 238 239 /* Outputs */ 240 {"RHPOUT", NULL, "Output Mixer"}, 241 {"LHPOUT", NULL, "Output Mixer"}, 242 {"LOUT", NULL, "Output Mixer"}, 243 {"ROUT", NULL, "Output Mixer"}, 244 245 /* Inputs */ 246 {"Line Input", "NULL", "LLINEIN"}, 247 {"Line Input", "NULL", "RLINEIN"}, 248 249 {"Mic Input", "NULL", "MICIN"}, 250 251 /* input mux */ 252 {"Capture Source", "Line", "Line Input"}, 253 {"Capture Source", "Mic", "Mic Input"}, 254 {"ADC", NULL, "Capture Source"}, 255 256 }; 257 258 /* AIC23 driver data */ 259 struct aic23 { 260 struct snd_soc_codec codec; 261 int mclk; 262 int requested_adc; 263 int requested_dac; 264 }; 265 266 /* 267 * Common Crystals used 268 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k 269 * 12.0000 Mhz /125 = *96k /136 = 88.235K 270 * 12.2880 Mhz /128 = *96k /192 = 64k 271 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k 272 * 18.4320 Mhz /128 = 144k /192 = *96k 273 */ 274 275 /* 276 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192 277 * USB BOSR 0-250/2 = 125, 1-272/2 = 136 278 */ 279 static const int bosr_usb_divisor_table[] = { 280 128, 125, 192, 136 281 }; 282 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7)) 283 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15)) 284 static const unsigned short sr_valid_mask[] = { 285 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/ 286 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/ 287 LOWER_GROUP, /* Usb, bosr - 0*/ 288 UPPER_GROUP, /* Usb, bosr - 1*/ 289 }; 290 /* 291 * Every divisor is a factor of 11*12 292 */ 293 #define SR_MULT (11*12) 294 #define A(x) (x) ? (SR_MULT/x) : 0 295 static const unsigned char sr_adc_mult_table[] = { 296 A(2), A(2), A(12), A(12), A(0), A(0), A(3), A(1), 297 A(2), A(2), A(11), A(11), A(0), A(0), A(0), A(1) 298 }; 299 static const unsigned char sr_dac_mult_table[] = { 300 A(2), A(12), A(2), A(12), A(0), A(0), A(3), A(1), 301 A(2), A(11), A(2), A(11), A(0), A(0), A(0), A(1) 302 }; 303 304 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc, 305 int dac, int dac_l, int dac_h, int need_dac) 306 { 307 if ((adc >= adc_l) && (adc <= adc_h) && 308 (dac >= dac_l) && (dac <= dac_h)) { 309 int diff_adc = need_adc - adc; 310 int diff_dac = need_dac - dac; 311 return abs(diff_adc) + abs(diff_dac); 312 } 313 return UINT_MAX; 314 } 315 316 static int find_rate(int mclk, u32 need_adc, u32 need_dac) 317 { 318 int i, j; 319 int best_i = -1; 320 int best_j = -1; 321 int best_div = 0; 322 unsigned best_score = UINT_MAX; 323 int adc_l, adc_h, dac_l, dac_h; 324 325 need_adc *= SR_MULT; 326 need_dac *= SR_MULT; 327 /* 328 * rates given are +/- 1/32 329 */ 330 adc_l = need_adc - (need_adc >> 5); 331 adc_h = need_adc + (need_adc >> 5); 332 dac_l = need_dac - (need_dac >> 5); 333 dac_h = need_dac + (need_dac >> 5); 334 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) { 335 int base = mclk / bosr_usb_divisor_table[i]; 336 int mask = sr_valid_mask[i]; 337 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table); 338 j++, mask >>= 1) { 339 int adc; 340 int dac; 341 int score; 342 if ((mask & 1) == 0) 343 continue; 344 adc = base * sr_adc_mult_table[j]; 345 dac = base * sr_dac_mult_table[j]; 346 score = get_score(adc, adc_l, adc_h, need_adc, 347 dac, dac_l, dac_h, need_dac); 348 if (best_score > score) { 349 best_score = score; 350 best_i = i; 351 best_j = j; 352 best_div = 0; 353 } 354 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 355 (dac >> 1), dac_l, dac_h, need_dac); 356 /* prefer to have a /2 */ 357 if ((score != UINT_MAX) && (best_score >= score)) { 358 best_score = score; 359 best_i = i; 360 best_j = j; 361 best_div = 1; 362 } 363 } 364 } 365 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 366 } 367 368 #ifdef DEBUG 369 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 370 u32 *sample_rate_adc, u32 *sample_rate_dac) 371 { 372 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); 373 int sr = (src >> 2) & 0x0f; 374 int val = (mclk / bosr_usb_divisor_table[src & 3]); 375 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 376 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 377 if (src & TLV320AIC23_CLKIN_HALF) { 378 adc >>= 1; 379 dac >>= 1; 380 } 381 *sample_rate_adc = adc; 382 *sample_rate_dac = dac; 383 } 384 #endif 385 386 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 387 u32 sample_rate_adc, u32 sample_rate_dac) 388 { 389 /* Search for the right sample rate */ 390 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 391 if (data < 0) { 392 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 393 __func__, sample_rate_adc, sample_rate_dac); 394 return -EINVAL; 395 } 396 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 397 #ifdef DEBUG 398 { 399 u32 adc, dac; 400 get_current_sample_rates(codec, mclk, &adc, &dac); 401 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 402 adc, dac, data); 403 } 404 #endif 405 return 0; 406 } 407 408 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) 409 { 410 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 411 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 412 413 /* set up audio path interconnects */ 414 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); 415 416 snd_soc_dapm_new_widgets(codec); 417 return 0; 418 } 419 420 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 421 struct snd_pcm_hw_params *params, 422 struct snd_soc_dai *dai) 423 { 424 struct snd_soc_pcm_runtime *rtd = substream->private_data; 425 struct snd_soc_device *socdev = rtd->socdev; 426 struct snd_soc_codec *codec = socdev->codec; 427 u16 iface_reg; 428 int ret; 429 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 430 u32 sample_rate_adc = aic23->requested_adc; 431 u32 sample_rate_dac = aic23->requested_dac; 432 u32 sample_rate = params_rate(params); 433 434 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 435 aic23->requested_dac = sample_rate_dac = sample_rate; 436 if (!sample_rate_adc) 437 sample_rate_adc = sample_rate; 438 } else { 439 aic23->requested_adc = sample_rate_adc = sample_rate; 440 if (!sample_rate_dac) 441 sample_rate_dac = sample_rate; 442 } 443 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 444 sample_rate_dac); 445 if (ret < 0) 446 return ret; 447 448 iface_reg = 449 tlv320aic23_read_reg_cache(codec, 450 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 451 switch (params_format(params)) { 452 case SNDRV_PCM_FORMAT_S16_LE: 453 break; 454 case SNDRV_PCM_FORMAT_S20_3LE: 455 iface_reg |= (0x01 << 2); 456 break; 457 case SNDRV_PCM_FORMAT_S24_LE: 458 iface_reg |= (0x02 << 2); 459 break; 460 case SNDRV_PCM_FORMAT_S32_LE: 461 iface_reg |= (0x03 << 2); 462 break; 463 } 464 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 465 466 return 0; 467 } 468 469 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream, 470 struct snd_soc_dai *dai) 471 { 472 struct snd_soc_pcm_runtime *rtd = substream->private_data; 473 struct snd_soc_device *socdev = rtd->socdev; 474 struct snd_soc_codec *codec = socdev->codec; 475 476 /* set active */ 477 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 478 479 return 0; 480 } 481 482 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream, 483 struct snd_soc_dai *dai) 484 { 485 struct snd_soc_pcm_runtime *rtd = substream->private_data; 486 struct snd_soc_device *socdev = rtd->socdev; 487 struct snd_soc_codec *codec = socdev->codec; 488 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 489 490 /* deactivate */ 491 if (!codec->active) { 492 udelay(50); 493 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 494 } 495 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 496 aic23->requested_dac = 0; 497 else 498 aic23->requested_adc = 0; 499 } 500 501 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 502 { 503 struct snd_soc_codec *codec = dai->codec; 504 u16 reg; 505 506 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 507 if (mute) 508 reg |= TLV320AIC23_DACM_MUTE; 509 510 else 511 reg &= ~TLV320AIC23_DACM_MUTE; 512 513 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 514 515 return 0; 516 } 517 518 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 519 unsigned int fmt) 520 { 521 struct snd_soc_codec *codec = codec_dai->codec; 522 u16 iface_reg; 523 524 iface_reg = 525 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 526 527 /* set master/slave audio interface */ 528 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 529 case SND_SOC_DAIFMT_CBM_CFM: 530 iface_reg |= TLV320AIC23_MS_MASTER; 531 break; 532 case SND_SOC_DAIFMT_CBS_CFS: 533 break; 534 default: 535 return -EINVAL; 536 537 } 538 539 /* interface format */ 540 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 541 case SND_SOC_DAIFMT_I2S: 542 iface_reg |= TLV320AIC23_FOR_I2S; 543 break; 544 case SND_SOC_DAIFMT_DSP_B: 545 iface_reg |= TLV320AIC23_FOR_DSP; 546 break; 547 case SND_SOC_DAIFMT_RIGHT_J: 548 break; 549 case SND_SOC_DAIFMT_LEFT_J: 550 iface_reg |= TLV320AIC23_FOR_LJUST; 551 break; 552 default: 553 return -EINVAL; 554 555 } 556 557 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 558 559 return 0; 560 } 561 562 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 563 int clk_id, unsigned int freq, int dir) 564 { 565 struct snd_soc_codec *codec = codec_dai->codec; 566 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 567 aic23->mclk = freq; 568 return 0; 569 } 570 571 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 572 enum snd_soc_bias_level level) 573 { 574 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 575 576 switch (level) { 577 case SND_SOC_BIAS_ON: 578 /* vref/mid, osc on, dac unmute */ 579 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 580 break; 581 case SND_SOC_BIAS_PREPARE: 582 break; 583 case SND_SOC_BIAS_STANDBY: 584 /* everything off except vref/vmid, */ 585 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 586 break; 587 case SND_SOC_BIAS_OFF: 588 /* everything off, dac mute, inactive */ 589 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 590 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 591 break; 592 } 593 codec->bias_level = level; 594 return 0; 595 } 596 597 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 598 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 599 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 600 601 struct snd_soc_dai tlv320aic23_dai = { 602 .name = "tlv320aic23", 603 .playback = { 604 .stream_name = "Playback", 605 .channels_min = 2, 606 .channels_max = 2, 607 .rates = AIC23_RATES, 608 .formats = AIC23_FORMATS,}, 609 .capture = { 610 .stream_name = "Capture", 611 .channels_min = 2, 612 .channels_max = 2, 613 .rates = AIC23_RATES, 614 .formats = AIC23_FORMATS,}, 615 .ops = { 616 .prepare = tlv320aic23_pcm_prepare, 617 .hw_params = tlv320aic23_hw_params, 618 .shutdown = tlv320aic23_shutdown, 619 .digital_mute = tlv320aic23_mute, 620 .set_fmt = tlv320aic23_set_dai_fmt, 621 .set_sysclk = tlv320aic23_set_dai_sysclk, 622 } 623 }; 624 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 625 626 static int tlv320aic23_suspend(struct platform_device *pdev, 627 pm_message_t state) 628 { 629 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 630 struct snd_soc_codec *codec = socdev->codec; 631 632 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 633 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 634 635 return 0; 636 } 637 638 static int tlv320aic23_resume(struct platform_device *pdev) 639 { 640 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 641 struct snd_soc_codec *codec = socdev->codec; 642 int i; 643 u16 reg; 644 645 /* Sync reg_cache with the hardware */ 646 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { 647 u16 val = tlv320aic23_read_reg_cache(codec, reg); 648 tlv320aic23_write(codec, reg, val); 649 } 650 651 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 652 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); 653 654 return 0; 655 } 656 657 /* 658 * initialise the AIC23 driver 659 * register the mixer and dsp interfaces with the kernel 660 */ 661 static int tlv320aic23_init(struct snd_soc_device *socdev) 662 { 663 struct snd_soc_codec *codec = socdev->codec; 664 int ret = 0; 665 u16 reg; 666 667 codec->name = "tlv320aic23"; 668 codec->owner = THIS_MODULE; 669 codec->read = tlv320aic23_read_reg_cache; 670 codec->write = tlv320aic23_write; 671 codec->set_bias_level = tlv320aic23_set_bias_level; 672 codec->dai = &tlv320aic23_dai; 673 codec->num_dai = 1; 674 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 675 codec->reg_cache = 676 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 677 if (codec->reg_cache == NULL) 678 return -ENOMEM; 679 680 /* Reset codec */ 681 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 682 683 /* register pcms */ 684 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 685 if (ret < 0) { 686 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 687 goto pcm_err; 688 } 689 690 /* power on device */ 691 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 692 693 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 694 695 /* Unmute input */ 696 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 697 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 698 (reg & (~TLV320AIC23_LIM_MUTED)) | 699 (TLV320AIC23_LRS_ENABLED)); 700 701 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 702 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 703 (reg & (~TLV320AIC23_LIM_MUTED)) | 704 TLV320AIC23_LRS_ENABLED); 705 706 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 707 tlv320aic23_write(codec, TLV320AIC23_ANLG, 708 (reg) & (~TLV320AIC23_BYPASS_ON) & 709 (~TLV320AIC23_MICM_MUTED)); 710 711 /* Default output volume */ 712 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 713 TLV320AIC23_DEFAULT_OUT_VOL & 714 TLV320AIC23_OUT_VOL_MASK); 715 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 716 TLV320AIC23_DEFAULT_OUT_VOL & 717 TLV320AIC23_OUT_VOL_MASK); 718 719 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 720 721 tlv320aic23_add_controls(codec); 722 tlv320aic23_add_widgets(codec); 723 ret = snd_soc_init_card(socdev); 724 if (ret < 0) { 725 printk(KERN_ERR "tlv320aic23: failed to register card\n"); 726 goto card_err; 727 } 728 729 return ret; 730 731 card_err: 732 snd_soc_free_pcms(socdev); 733 snd_soc_dapm_free(socdev); 734 pcm_err: 735 kfree(codec->reg_cache); 736 return ret; 737 } 738 static struct snd_soc_device *tlv320aic23_socdev; 739 740 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 741 /* 742 * If the i2c layer weren't so broken, we could pass this kind of data 743 * around 744 */ 745 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 746 const struct i2c_device_id *i2c_id) 747 { 748 struct snd_soc_device *socdev = tlv320aic23_socdev; 749 struct snd_soc_codec *codec = socdev->codec; 750 int ret; 751 752 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 753 return -EINVAL; 754 755 i2c_set_clientdata(i2c, codec); 756 codec->control_data = i2c; 757 758 ret = tlv320aic23_init(socdev); 759 if (ret < 0) { 760 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 761 goto err; 762 } 763 return ret; 764 765 err: 766 kfree(codec); 767 kfree(i2c); 768 return ret; 769 } 770 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 771 { 772 put_device(&i2c->dev); 773 return 0; 774 } 775 776 static const struct i2c_device_id tlv320aic23_id[] = { 777 {"tlv320aic23", 0}, 778 {} 779 }; 780 781 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 782 783 static struct i2c_driver tlv320aic23_i2c_driver = { 784 .driver = { 785 .name = "tlv320aic23", 786 }, 787 .probe = tlv320aic23_codec_probe, 788 .remove = __exit_p(tlv320aic23_i2c_remove), 789 .id_table = tlv320aic23_id, 790 }; 791 792 #endif 793 794 static int tlv320aic23_probe(struct platform_device *pdev) 795 { 796 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 797 struct snd_soc_codec *codec; 798 struct aic23 *aic23; 799 int ret = 0; 800 801 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 802 803 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 804 if (aic23 == NULL) 805 return -ENOMEM; 806 codec = &aic23->codec; 807 socdev->codec = codec; 808 mutex_init(&codec->mutex); 809 INIT_LIST_HEAD(&codec->dapm_widgets); 810 INIT_LIST_HEAD(&codec->dapm_paths); 811 812 tlv320aic23_socdev = socdev; 813 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 814 codec->hw_write = (hw_write_t) i2c_master_send; 815 codec->hw_read = NULL; 816 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 817 if (ret != 0) 818 printk(KERN_ERR "can't add i2c driver"); 819 #endif 820 return ret; 821 } 822 823 static int tlv320aic23_remove(struct platform_device *pdev) 824 { 825 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 826 struct snd_soc_codec *codec = socdev->codec; 827 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 828 829 if (codec->control_data) 830 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 831 832 snd_soc_free_pcms(socdev); 833 snd_soc_dapm_free(socdev); 834 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 835 i2c_del_driver(&tlv320aic23_i2c_driver); 836 #endif 837 kfree(codec->reg_cache); 838 kfree(aic23); 839 840 return 0; 841 } 842 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 843 .probe = tlv320aic23_probe, 844 .remove = tlv320aic23_remove, 845 .suspend = tlv320aic23_suspend, 846 .resume = tlv320aic23_resume, 847 }; 848 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 849 850 static int __init tlv320aic23_modinit(void) 851 { 852 return snd_soc_register_dai(&tlv320aic23_dai); 853 } 854 module_init(tlv320aic23_modinit); 855 856 static void __exit tlv320aic23_exit(void) 857 { 858 snd_soc_unregister_dai(&tlv320aic23_dai); 859 } 860 module_exit(tlv320aic23_exit); 861 862 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 863 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 864 MODULE_LICENSE("GPL"); 865