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 { 423 struct snd_soc_pcm_runtime *rtd = substream->private_data; 424 struct snd_soc_device *socdev = rtd->socdev; 425 struct snd_soc_codec *codec = socdev->codec; 426 u16 iface_reg; 427 int ret; 428 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 429 u32 sample_rate_adc = aic23->requested_adc; 430 u32 sample_rate_dac = aic23->requested_dac; 431 u32 sample_rate = params_rate(params); 432 433 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 434 aic23->requested_dac = sample_rate_dac = sample_rate; 435 if (!sample_rate_adc) 436 sample_rate_adc = sample_rate; 437 } else { 438 aic23->requested_adc = sample_rate_adc = sample_rate; 439 if (!sample_rate_dac) 440 sample_rate_dac = sample_rate; 441 } 442 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 443 sample_rate_dac); 444 if (ret < 0) 445 return ret; 446 447 iface_reg = 448 tlv320aic23_read_reg_cache(codec, 449 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 450 switch (params_format(params)) { 451 case SNDRV_PCM_FORMAT_S16_LE: 452 break; 453 case SNDRV_PCM_FORMAT_S20_3LE: 454 iface_reg |= (0x01 << 2); 455 break; 456 case SNDRV_PCM_FORMAT_S24_LE: 457 iface_reg |= (0x02 << 2); 458 break; 459 case SNDRV_PCM_FORMAT_S32_LE: 460 iface_reg |= (0x03 << 2); 461 break; 462 } 463 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 464 465 return 0; 466 } 467 468 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream) 469 { 470 struct snd_soc_pcm_runtime *rtd = substream->private_data; 471 struct snd_soc_device *socdev = rtd->socdev; 472 struct snd_soc_codec *codec = socdev->codec; 473 474 /* set active */ 475 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 476 477 return 0; 478 } 479 480 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream) 481 { 482 struct snd_soc_pcm_runtime *rtd = substream->private_data; 483 struct snd_soc_device *socdev = rtd->socdev; 484 struct snd_soc_codec *codec = socdev->codec; 485 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 486 487 /* deactivate */ 488 if (!codec->active) { 489 udelay(50); 490 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 491 } 492 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 493 aic23->requested_dac = 0; 494 else 495 aic23->requested_adc = 0; 496 } 497 498 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 499 { 500 struct snd_soc_codec *codec = dai->codec; 501 u16 reg; 502 503 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 504 if (mute) 505 reg |= TLV320AIC23_DACM_MUTE; 506 507 else 508 reg &= ~TLV320AIC23_DACM_MUTE; 509 510 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 511 512 return 0; 513 } 514 515 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 516 unsigned int fmt) 517 { 518 struct snd_soc_codec *codec = codec_dai->codec; 519 u16 iface_reg; 520 521 iface_reg = 522 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 523 524 /* set master/slave audio interface */ 525 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 526 case SND_SOC_DAIFMT_CBM_CFM: 527 iface_reg |= TLV320AIC23_MS_MASTER; 528 break; 529 case SND_SOC_DAIFMT_CBS_CFS: 530 break; 531 default: 532 return -EINVAL; 533 534 } 535 536 /* interface format */ 537 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 538 case SND_SOC_DAIFMT_I2S: 539 iface_reg |= TLV320AIC23_FOR_I2S; 540 break; 541 case SND_SOC_DAIFMT_DSP_A: 542 iface_reg |= TLV320AIC23_FOR_DSP; 543 break; 544 case SND_SOC_DAIFMT_RIGHT_J: 545 break; 546 case SND_SOC_DAIFMT_LEFT_J: 547 iface_reg |= TLV320AIC23_FOR_LJUST; 548 break; 549 default: 550 return -EINVAL; 551 552 } 553 554 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 555 556 return 0; 557 } 558 559 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 560 int clk_id, unsigned int freq, int dir) 561 { 562 struct snd_soc_codec *codec = codec_dai->codec; 563 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 564 aic23->mclk = freq; 565 return 0; 566 } 567 568 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 569 enum snd_soc_bias_level level) 570 { 571 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 572 573 switch (level) { 574 case SND_SOC_BIAS_ON: 575 /* vref/mid, osc on, dac unmute */ 576 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 577 break; 578 case SND_SOC_BIAS_PREPARE: 579 break; 580 case SND_SOC_BIAS_STANDBY: 581 /* everything off except vref/vmid, */ 582 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 583 break; 584 case SND_SOC_BIAS_OFF: 585 /* everything off, dac mute, inactive */ 586 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 587 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 588 break; 589 } 590 codec->bias_level = level; 591 return 0; 592 } 593 594 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 595 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 596 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 597 598 struct snd_soc_dai tlv320aic23_dai = { 599 .name = "tlv320aic23", 600 .playback = { 601 .stream_name = "Playback", 602 .channels_min = 2, 603 .channels_max = 2, 604 .rates = AIC23_RATES, 605 .formats = AIC23_FORMATS,}, 606 .capture = { 607 .stream_name = "Capture", 608 .channels_min = 2, 609 .channels_max = 2, 610 .rates = AIC23_RATES, 611 .formats = AIC23_FORMATS,}, 612 .ops = { 613 .prepare = tlv320aic23_pcm_prepare, 614 .hw_params = tlv320aic23_hw_params, 615 .shutdown = tlv320aic23_shutdown, 616 }, 617 .dai_ops = { 618 .digital_mute = tlv320aic23_mute, 619 .set_fmt = tlv320aic23_set_dai_fmt, 620 .set_sysclk = tlv320aic23_set_dai_sysclk, 621 } 622 }; 623 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 624 625 static int tlv320aic23_suspend(struct platform_device *pdev, 626 pm_message_t state) 627 { 628 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 629 struct snd_soc_codec *codec = socdev->codec; 630 631 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 632 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 633 634 return 0; 635 } 636 637 static int tlv320aic23_resume(struct platform_device *pdev) 638 { 639 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 640 struct snd_soc_codec *codec = socdev->codec; 641 int i; 642 u16 reg; 643 644 /* Sync reg_cache with the hardware */ 645 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { 646 u16 val = tlv320aic23_read_reg_cache(codec, reg); 647 tlv320aic23_write(codec, reg, val); 648 } 649 650 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 651 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); 652 653 return 0; 654 } 655 656 /* 657 * initialise the AIC23 driver 658 * register the mixer and dsp interfaces with the kernel 659 */ 660 static int tlv320aic23_init(struct snd_soc_device *socdev) 661 { 662 struct snd_soc_codec *codec = socdev->codec; 663 int ret = 0; 664 u16 reg; 665 666 codec->name = "tlv320aic23"; 667 codec->owner = THIS_MODULE; 668 codec->read = tlv320aic23_read_reg_cache; 669 codec->write = tlv320aic23_write; 670 codec->set_bias_level = tlv320aic23_set_bias_level; 671 codec->dai = &tlv320aic23_dai; 672 codec->num_dai = 1; 673 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 674 codec->reg_cache = 675 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 676 if (codec->reg_cache == NULL) 677 return -ENOMEM; 678 679 /* Reset codec */ 680 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 681 682 /* register pcms */ 683 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 684 if (ret < 0) { 685 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 686 goto pcm_err; 687 } 688 689 /* power on device */ 690 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 691 692 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 693 694 /* Unmute input */ 695 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 696 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 697 (reg & (~TLV320AIC23_LIM_MUTED)) | 698 (TLV320AIC23_LRS_ENABLED)); 699 700 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 701 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 702 (reg & (~TLV320AIC23_LIM_MUTED)) | 703 TLV320AIC23_LRS_ENABLED); 704 705 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 706 tlv320aic23_write(codec, TLV320AIC23_ANLG, 707 (reg) & (~TLV320AIC23_BYPASS_ON) & 708 (~TLV320AIC23_MICM_MUTED)); 709 710 /* Default output volume */ 711 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 712 TLV320AIC23_DEFAULT_OUT_VOL & 713 TLV320AIC23_OUT_VOL_MASK); 714 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 715 TLV320AIC23_DEFAULT_OUT_VOL & 716 TLV320AIC23_OUT_VOL_MASK); 717 718 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 719 720 tlv320aic23_add_controls(codec); 721 tlv320aic23_add_widgets(codec); 722 ret = snd_soc_register_card(socdev); 723 if (ret < 0) { 724 printk(KERN_ERR "tlv320aic23: failed to register card\n"); 725 goto card_err; 726 } 727 728 return ret; 729 730 card_err: 731 snd_soc_free_pcms(socdev); 732 snd_soc_dapm_free(socdev); 733 pcm_err: 734 kfree(codec->reg_cache); 735 return ret; 736 } 737 static struct snd_soc_device *tlv320aic23_socdev; 738 739 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 740 /* 741 * If the i2c layer weren't so broken, we could pass this kind of data 742 * around 743 */ 744 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 745 const struct i2c_device_id *i2c_id) 746 { 747 struct snd_soc_device *socdev = tlv320aic23_socdev; 748 struct snd_soc_codec *codec = socdev->codec; 749 int ret; 750 751 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 752 return -EINVAL; 753 754 i2c_set_clientdata(i2c, codec); 755 codec->control_data = i2c; 756 757 ret = tlv320aic23_init(socdev); 758 if (ret < 0) { 759 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 760 goto err; 761 } 762 return ret; 763 764 err: 765 kfree(codec); 766 kfree(i2c); 767 return ret; 768 } 769 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 770 { 771 put_device(&i2c->dev); 772 return 0; 773 } 774 775 static const struct i2c_device_id tlv320aic23_id[] = { 776 {"tlv320aic23", 0}, 777 {} 778 }; 779 780 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 781 782 static struct i2c_driver tlv320aic23_i2c_driver = { 783 .driver = { 784 .name = "tlv320aic23", 785 }, 786 .probe = tlv320aic23_codec_probe, 787 .remove = __exit_p(tlv320aic23_i2c_remove), 788 .id_table = tlv320aic23_id, 789 }; 790 791 #endif 792 793 static int tlv320aic23_probe(struct platform_device *pdev) 794 { 795 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 796 struct snd_soc_codec *codec; 797 struct aic23 *aic23; 798 int ret = 0; 799 800 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 801 802 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 803 if (aic23 == NULL) 804 return -ENOMEM; 805 codec = &aic23->codec; 806 socdev->codec = codec; 807 mutex_init(&codec->mutex); 808 INIT_LIST_HEAD(&codec->dapm_widgets); 809 INIT_LIST_HEAD(&codec->dapm_paths); 810 811 tlv320aic23_socdev = socdev; 812 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 813 codec->hw_write = (hw_write_t) i2c_master_send; 814 codec->hw_read = NULL; 815 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 816 if (ret != 0) 817 printk(KERN_ERR "can't add i2c driver"); 818 #endif 819 return ret; 820 } 821 822 static int tlv320aic23_remove(struct platform_device *pdev) 823 { 824 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 825 struct snd_soc_codec *codec = socdev->codec; 826 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 827 828 if (codec->control_data) 829 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 830 831 snd_soc_free_pcms(socdev); 832 snd_soc_dapm_free(socdev); 833 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 834 i2c_del_driver(&tlv320aic23_i2c_driver); 835 #endif 836 kfree(codec->reg_cache); 837 kfree(aic23); 838 839 return 0; 840 } 841 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 842 .probe = tlv320aic23_probe, 843 .remove = tlv320aic23_remove, 844 .suspend = tlv320aic23_suspend, 845 .resume = tlv320aic23_resume, 846 }; 847 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 848 849 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 850 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 851 MODULE_LICENSE("GPL"); 852