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 < 4; i++) { 335 int base = mclk / bosr_usb_divisor_table[i]; 336 int mask = sr_valid_mask[i]; 337 for (j = 0; j < 16; j++, mask >>= 1) { 338 int adc; 339 int dac; 340 int score; 341 if ((mask & 1) == 0) 342 continue; 343 adc = base * sr_adc_mult_table[j]; 344 dac = base * sr_dac_mult_table[j]; 345 score = get_score(adc, adc_l, adc_h, need_adc, 346 dac, dac_l, dac_h, need_dac); 347 if (best_score > score) { 348 best_score = score; 349 best_i = i; 350 best_j = j; 351 best_div = 0; 352 } 353 score = get_score((adc >> 1), adc_l, adc_h, need_adc, 354 (dac >> 1), dac_l, dac_h, need_dac); 355 /* prefer to have a /2 */ 356 if ((score != UINT_MAX) && (best_score >= score)) { 357 best_score = score; 358 best_i = i; 359 best_j = j; 360 best_div = 1; 361 } 362 } 363 } 364 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT); 365 } 366 367 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk, 368 u32 *sample_rate_adc, u32 *sample_rate_dac) 369 { 370 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE); 371 int sr = (src >> 2) & 0x0f; 372 int val = (mclk / bosr_usb_divisor_table[src & 3]); 373 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT; 374 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT; 375 if (src & TLV320AIC23_CLKIN_HALF) { 376 adc >>= 1; 377 dac >>= 1; 378 } 379 *sample_rate_adc = adc; 380 *sample_rate_dac = dac; 381 } 382 383 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk, 384 u32 sample_rate_adc, u32 sample_rate_dac) 385 { 386 /* Search for the right sample rate */ 387 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac); 388 if (data < 0) { 389 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n", 390 __func__, sample_rate_adc, sample_rate_dac); 391 return -EINVAL; 392 } 393 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 394 if (1) { 395 int adc, dac; 396 get_current_sample_rates(codec, mclk, &adc, &dac); 397 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n", 398 adc, dac, data); 399 } 400 return 0; 401 } 402 403 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) 404 { 405 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 406 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 407 408 /* set up audio path interconnects */ 409 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); 410 411 snd_soc_dapm_new_widgets(codec); 412 return 0; 413 } 414 415 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 416 struct snd_pcm_hw_params *params) 417 { 418 struct snd_soc_pcm_runtime *rtd = substream->private_data; 419 struct snd_soc_device *socdev = rtd->socdev; 420 struct snd_soc_codec *codec = socdev->codec; 421 u16 iface_reg; 422 int ret; 423 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 424 u32 sample_rate_adc = aic23->requested_adc; 425 u32 sample_rate_dac = aic23->requested_dac; 426 u32 sample_rate = params_rate(params); 427 428 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 429 aic23->requested_dac = sample_rate_dac = sample_rate; 430 if (!sample_rate_adc) 431 sample_rate_adc = sample_rate; 432 } else { 433 aic23->requested_adc = sample_rate_adc = sample_rate; 434 if (!sample_rate_dac) 435 sample_rate_dac = sample_rate; 436 } 437 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc, 438 sample_rate_dac); 439 if (ret < 0) 440 return ret; 441 442 iface_reg = 443 tlv320aic23_read_reg_cache(codec, 444 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 445 switch (params_format(params)) { 446 case SNDRV_PCM_FORMAT_S16_LE: 447 break; 448 case SNDRV_PCM_FORMAT_S20_3LE: 449 iface_reg |= (0x01 << 2); 450 break; 451 case SNDRV_PCM_FORMAT_S24_LE: 452 iface_reg |= (0x02 << 2); 453 break; 454 case SNDRV_PCM_FORMAT_S32_LE: 455 iface_reg |= (0x03 << 2); 456 break; 457 } 458 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 459 460 return 0; 461 } 462 463 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream) 464 { 465 struct snd_soc_pcm_runtime *rtd = substream->private_data; 466 struct snd_soc_device *socdev = rtd->socdev; 467 struct snd_soc_codec *codec = socdev->codec; 468 469 /* set active */ 470 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 471 472 return 0; 473 } 474 475 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream) 476 { 477 struct snd_soc_pcm_runtime *rtd = substream->private_data; 478 struct snd_soc_device *socdev = rtd->socdev; 479 struct snd_soc_codec *codec = socdev->codec; 480 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 481 482 /* deactivate */ 483 if (!codec->active) { 484 udelay(50); 485 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 486 } 487 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 488 aic23->requested_dac = 0; 489 else 490 aic23->requested_adc = 0; 491 } 492 493 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 494 { 495 struct snd_soc_codec *codec = dai->codec; 496 u16 reg; 497 498 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 499 if (mute) 500 reg |= TLV320AIC23_DACM_MUTE; 501 502 else 503 reg &= ~TLV320AIC23_DACM_MUTE; 504 505 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 506 507 return 0; 508 } 509 510 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 511 unsigned int fmt) 512 { 513 struct snd_soc_codec *codec = codec_dai->codec; 514 u16 iface_reg; 515 516 iface_reg = 517 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 518 519 /* set master/slave audio interface */ 520 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 521 case SND_SOC_DAIFMT_CBM_CFM: 522 iface_reg |= TLV320AIC23_MS_MASTER; 523 break; 524 case SND_SOC_DAIFMT_CBS_CFS: 525 break; 526 default: 527 return -EINVAL; 528 529 } 530 531 /* interface format */ 532 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 533 case SND_SOC_DAIFMT_I2S: 534 iface_reg |= TLV320AIC23_FOR_I2S; 535 break; 536 case SND_SOC_DAIFMT_DSP_A: 537 iface_reg |= TLV320AIC23_FOR_DSP; 538 break; 539 case SND_SOC_DAIFMT_RIGHT_J: 540 break; 541 case SND_SOC_DAIFMT_LEFT_J: 542 iface_reg |= TLV320AIC23_FOR_LJUST; 543 break; 544 default: 545 return -EINVAL; 546 547 } 548 549 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 550 551 return 0; 552 } 553 554 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 555 int clk_id, unsigned int freq, int dir) 556 { 557 struct snd_soc_codec *codec = codec_dai->codec; 558 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 559 aic23->mclk = freq; 560 return 0; 561 } 562 563 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 564 enum snd_soc_bias_level level) 565 { 566 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 567 568 switch (level) { 569 case SND_SOC_BIAS_ON: 570 /* vref/mid, osc on, dac unmute */ 571 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 572 break; 573 case SND_SOC_BIAS_PREPARE: 574 break; 575 case SND_SOC_BIAS_STANDBY: 576 /* everything off except vref/vmid, */ 577 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 578 break; 579 case SND_SOC_BIAS_OFF: 580 /* everything off, dac mute, inactive */ 581 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 582 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 583 break; 584 } 585 codec->bias_level = level; 586 return 0; 587 } 588 589 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 590 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 591 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 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 = { 608 .prepare = tlv320aic23_pcm_prepare, 609 .hw_params = tlv320aic23_hw_params, 610 .shutdown = tlv320aic23_shutdown, 611 }, 612 .dai_ops = { 613 .digital_mute = tlv320aic23_mute, 614 .set_fmt = tlv320aic23_set_dai_fmt, 615 .set_sysclk = tlv320aic23_set_dai_sysclk, 616 } 617 }; 618 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 619 620 static int tlv320aic23_suspend(struct platform_device *pdev, 621 pm_message_t state) 622 { 623 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 624 struct snd_soc_codec *codec = socdev->codec; 625 626 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 627 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 628 629 return 0; 630 } 631 632 static int tlv320aic23_resume(struct platform_device *pdev) 633 { 634 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 635 struct snd_soc_codec *codec = socdev->codec; 636 int i; 637 u16 reg; 638 639 /* Sync reg_cache with the hardware */ 640 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { 641 u16 val = tlv320aic23_read_reg_cache(codec, reg); 642 tlv320aic23_write(codec, reg, val); 643 } 644 645 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 646 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); 647 648 return 0; 649 } 650 651 /* 652 * initialise the AIC23 driver 653 * register the mixer and dsp interfaces with the kernel 654 */ 655 static int tlv320aic23_init(struct snd_soc_device *socdev) 656 { 657 struct snd_soc_codec *codec = socdev->codec; 658 int ret = 0; 659 u16 reg; 660 661 codec->name = "tlv320aic23"; 662 codec->owner = THIS_MODULE; 663 codec->read = tlv320aic23_read_reg_cache; 664 codec->write = tlv320aic23_write; 665 codec->set_bias_level = tlv320aic23_set_bias_level; 666 codec->dai = &tlv320aic23_dai; 667 codec->num_dai = 1; 668 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 669 codec->reg_cache = 670 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 671 if (codec->reg_cache == NULL) 672 return -ENOMEM; 673 674 /* Reset codec */ 675 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 676 677 /* register pcms */ 678 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 679 if (ret < 0) { 680 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 681 goto pcm_err; 682 } 683 684 /* power on device */ 685 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 686 687 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 688 689 /* Unmute input */ 690 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 691 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 692 (reg & (~TLV320AIC23_LIM_MUTED)) | 693 (TLV320AIC23_LRS_ENABLED)); 694 695 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 696 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 697 (reg & (~TLV320AIC23_LIM_MUTED)) | 698 TLV320AIC23_LRS_ENABLED); 699 700 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 701 tlv320aic23_write(codec, TLV320AIC23_ANLG, 702 (reg) & (~TLV320AIC23_BYPASS_ON) & 703 (~TLV320AIC23_MICM_MUTED)); 704 705 /* Default output volume */ 706 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 707 TLV320AIC23_DEFAULT_OUT_VOL & 708 TLV320AIC23_OUT_VOL_MASK); 709 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 710 TLV320AIC23_DEFAULT_OUT_VOL & 711 TLV320AIC23_OUT_VOL_MASK); 712 713 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 714 715 tlv320aic23_add_controls(codec); 716 tlv320aic23_add_widgets(codec); 717 ret = snd_soc_register_card(socdev); 718 if (ret < 0) { 719 printk(KERN_ERR "tlv320aic23: failed to register card\n"); 720 goto card_err; 721 } 722 723 return ret; 724 725 card_err: 726 snd_soc_free_pcms(socdev); 727 snd_soc_dapm_free(socdev); 728 pcm_err: 729 kfree(codec->reg_cache); 730 return ret; 731 } 732 static struct snd_soc_device *tlv320aic23_socdev; 733 734 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 735 /* 736 * If the i2c layer weren't so broken, we could pass this kind of data 737 * around 738 */ 739 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 740 const struct i2c_device_id *i2c_id) 741 { 742 struct snd_soc_device *socdev = tlv320aic23_socdev; 743 struct snd_soc_codec *codec = socdev->codec; 744 int ret; 745 746 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 747 return -EINVAL; 748 749 i2c_set_clientdata(i2c, codec); 750 codec->control_data = i2c; 751 752 ret = tlv320aic23_init(socdev); 753 if (ret < 0) { 754 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 755 goto err; 756 } 757 return ret; 758 759 err: 760 kfree(codec); 761 kfree(i2c); 762 return ret; 763 } 764 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 765 { 766 put_device(&i2c->dev); 767 return 0; 768 } 769 770 static const struct i2c_device_id tlv320aic23_id[] = { 771 {"tlv320aic23", 0}, 772 {} 773 }; 774 775 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 776 777 static struct i2c_driver tlv320aic23_i2c_driver = { 778 .driver = { 779 .name = "tlv320aic23", 780 }, 781 .probe = tlv320aic23_codec_probe, 782 .remove = __exit_p(tlv320aic23_i2c_remove), 783 .id_table = tlv320aic23_id, 784 }; 785 786 #endif 787 788 static int tlv320aic23_probe(struct platform_device *pdev) 789 { 790 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 791 struct snd_soc_codec *codec; 792 struct aic23 *aic23; 793 int ret = 0; 794 795 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 796 797 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL); 798 if (aic23 == NULL) 799 return -ENOMEM; 800 codec = &aic23->codec; 801 socdev->codec = codec; 802 mutex_init(&codec->mutex); 803 INIT_LIST_HEAD(&codec->dapm_widgets); 804 INIT_LIST_HEAD(&codec->dapm_paths); 805 806 tlv320aic23_socdev = socdev; 807 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 808 codec->hw_write = (hw_write_t) i2c_master_send; 809 codec->hw_read = NULL; 810 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 811 if (ret != 0) 812 printk(KERN_ERR "can't add i2c driver"); 813 #endif 814 return ret; 815 } 816 817 static int tlv320aic23_remove(struct platform_device *pdev) 818 { 819 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 820 struct snd_soc_codec *codec = socdev->codec; 821 struct aic23 *aic23 = container_of(codec, struct aic23, codec); 822 823 if (codec->control_data) 824 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 825 826 snd_soc_free_pcms(socdev); 827 snd_soc_dapm_free(socdev); 828 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 829 i2c_del_driver(&tlv320aic23_i2c_driver); 830 #endif 831 kfree(codec->reg_cache); 832 kfree(aic23); 833 834 return 0; 835 } 836 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 837 .probe = tlv320aic23_probe, 838 .remove = tlv320aic23_remove, 839 .suspend = tlv320aic23_suspend, 840 .resume = tlv320aic23_resume, 841 }; 842 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 843 844 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 845 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 846 MODULE_LICENSE("GPL"); 847