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 AUDIO_NAME "tlv320aic23" 39 #define AIC23_VERSION "0.1" 40 41 struct tlv320aic23_srate_reg_info { 42 u32 sample_rate; 43 u8 control; /* SR3, SR2, SR1, SR0 and BOSR */ 44 u8 divider; /* if 0 CLKIN = MCLK, if 1 CLKIN = MCLK/2 */ 45 }; 46 47 /* 48 * AIC23 register cache 49 */ 50 static const u16 tlv320aic23_reg[] = { 51 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */ 52 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */ 53 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */ 54 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */ 55 }; 56 57 /* 58 * read tlv320aic23 register cache 59 */ 60 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec 61 *codec, unsigned int reg) 62 { 63 u16 *cache = codec->reg_cache; 64 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 65 return -1; 66 return cache[reg]; 67 } 68 69 /* 70 * write tlv320aic23 register cache 71 */ 72 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec, 73 u8 reg, u16 value) 74 { 75 u16 *cache = codec->reg_cache; 76 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 77 return; 78 cache[reg] = value; 79 } 80 81 /* 82 * write to the tlv320aic23 register space 83 */ 84 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg, 85 unsigned int value) 86 { 87 88 u8 data; 89 90 /* TLV320AIC23 has 7 bit address and 9 bits of data 91 * so we need to switch one data bit into reg and rest 92 * of data into val 93 */ 94 95 if ((reg < 0 || reg > 9) && (reg != 15)) { 96 printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg); 97 return -1; 98 } 99 100 data = (reg << 1) | (value >> 8 & 0x01); 101 102 tlv320aic23_write_reg_cache(codec, reg, value); 103 104 if (codec->hw_write(codec->control_data, data, 105 (value & 0xff)) == 0) 106 return 0; 107 108 printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__, 109 value, reg); 110 111 return -EIO; 112 } 113 114 static const char *rec_src_text[] = { "Line", "Mic" }; 115 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 116 117 static const struct soc_enum rec_src_enum = 118 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 119 120 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls = 121 SOC_DAPM_ENUM("Input Select", rec_src_enum); 122 123 static const struct soc_enum tlv320aic23_rec_src = 124 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 125 static const struct soc_enum tlv320aic23_deemph = 126 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text); 127 128 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); 129 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); 130 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); 131 132 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, 133 struct snd_ctl_elem_value *ucontrol) 134 { 135 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 136 u16 val, reg; 137 138 val = (ucontrol->value.integer.value[0] & 0x07); 139 140 /* linear conversion to userspace 141 * 000 = -6db 142 * 001 = -9db 143 * 010 = -12db 144 * 011 = -18db (Min) 145 * 100 = 0db (Max) 146 */ 147 val = (val >= 4) ? 4 : (3 - val); 148 149 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0); 150 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); 151 152 return 0; 153 } 154 155 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, 156 struct snd_ctl_elem_value *ucontrol) 157 { 158 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 159 u16 val; 160 161 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0); 162 val = val >> 6; 163 val = (val >= 4) ? 4 : (3 - val); 164 ucontrol->value.integer.value[0] = val; 165 return 0; 166 167 } 168 169 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 170 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 171 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 172 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 173 .tlv.p = (tlv_array), \ 174 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\ 175 .put = snd_soc_tlv320aic23_put_volsw, \ 176 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 177 178 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { 179 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, 180 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), 181 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), 182 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, 183 TLV320AIC23_RINVOL, 7, 1, 0), 184 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, 185 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), 186 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), 187 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), 188 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG, 189 6, 4, 0, sidetone_vol_tlv), 190 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), 191 }; 192 193 /* add non dapm controls */ 194 static int tlv320aic23_add_controls(struct snd_soc_codec *codec) 195 { 196 197 int err, i; 198 199 for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) { 200 err = snd_ctl_add(codec->card, 201 snd_soc_cnew(&tlv320aic23_snd_controls[i], 202 codec, NULL)); 203 if (err < 0) 204 return err; 205 } 206 207 return 0; 208 209 } 210 211 /* PGA Mixer controls for Line and Mic switch */ 212 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 213 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 214 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 215 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 216 }; 217 218 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 219 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 220 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 221 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 222 &tlv320aic23_rec_src_mux_controls), 223 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 224 &tlv320aic23_output_mixer_controls[0], 225 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 226 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 227 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 228 229 SND_SOC_DAPM_OUTPUT("LHPOUT"), 230 SND_SOC_DAPM_OUTPUT("RHPOUT"), 231 SND_SOC_DAPM_OUTPUT("LOUT"), 232 SND_SOC_DAPM_OUTPUT("ROUT"), 233 234 SND_SOC_DAPM_INPUT("LLINEIN"), 235 SND_SOC_DAPM_INPUT("RLINEIN"), 236 237 SND_SOC_DAPM_INPUT("MICIN"), 238 }; 239 240 static const struct snd_soc_dapm_route intercon[] = { 241 /* Output Mixer */ 242 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 243 {"Output Mixer", "Playback Switch", "DAC"}, 244 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 245 246 /* Outputs */ 247 {"RHPOUT", NULL, "Output Mixer"}, 248 {"LHPOUT", NULL, "Output Mixer"}, 249 {"LOUT", NULL, "Output Mixer"}, 250 {"ROUT", NULL, "Output Mixer"}, 251 252 /* Inputs */ 253 {"Line Input", "NULL", "LLINEIN"}, 254 {"Line Input", "NULL", "RLINEIN"}, 255 256 {"Mic Input", "NULL", "MICIN"}, 257 258 /* input mux */ 259 {"Capture Source", "Line", "Line Input"}, 260 {"Capture Source", "Mic", "Mic Input"}, 261 {"ADC", NULL, "Capture Source"}, 262 263 }; 264 265 /* tlv320aic23 related */ 266 static const struct tlv320aic23_srate_reg_info srate_reg_info[] = { 267 {4000, 0x06, 1}, /* 4000 */ 268 {8000, 0x06, 0}, /* 8000 */ 269 {16000, 0x0C, 1}, /* 16000 */ 270 {22050, 0x11, 1}, /* 22050 */ 271 {24000, 0x00, 1}, /* 24000 */ 272 {32000, 0x0C, 0}, /* 32000 */ 273 {44100, 0x11, 0}, /* 44100 */ 274 {48000, 0x00, 0}, /* 48000 */ 275 {88200, 0x1F, 0}, /* 88200 */ 276 {96000, 0x0E, 0}, /* 96000 */ 277 }; 278 279 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) 280 { 281 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 282 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 283 284 /* set up audio path interconnects */ 285 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); 286 287 snd_soc_dapm_new_widgets(codec); 288 return 0; 289 } 290 291 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 292 struct snd_pcm_hw_params *params) 293 { 294 struct snd_soc_pcm_runtime *rtd = substream->private_data; 295 struct snd_soc_device *socdev = rtd->socdev; 296 struct snd_soc_codec *codec = socdev->codec; 297 u16 iface_reg, data; 298 u8 count = 0; 299 300 iface_reg = 301 tlv320aic23_read_reg_cache(codec, 302 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 303 304 /* Search for the right sample rate */ 305 /* Verify what happens if the rate is not supported 306 * now it goes to 96Khz */ 307 while ((srate_reg_info[count].sample_rate != params_rate(params)) && 308 (count < ARRAY_SIZE(srate_reg_info))) { 309 count++; 310 } 311 312 data = (srate_reg_info[count].divider << TLV320AIC23_CLKIN_SHIFT) | 313 (srate_reg_info[count]. control << TLV320AIC23_BOSR_SHIFT) | 314 TLV320AIC23_USB_CLK_ON; 315 316 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 317 318 switch (params_format(params)) { 319 case SNDRV_PCM_FORMAT_S16_LE: 320 break; 321 case SNDRV_PCM_FORMAT_S20_3LE: 322 iface_reg |= (0x01 << 2); 323 break; 324 case SNDRV_PCM_FORMAT_S24_LE: 325 iface_reg |= (0x02 << 2); 326 break; 327 case SNDRV_PCM_FORMAT_S32_LE: 328 iface_reg |= (0x03 << 2); 329 break; 330 } 331 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 332 333 return 0; 334 } 335 336 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream) 337 { 338 struct snd_soc_pcm_runtime *rtd = substream->private_data; 339 struct snd_soc_device *socdev = rtd->socdev; 340 struct snd_soc_codec *codec = socdev->codec; 341 342 /* set active */ 343 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 344 345 return 0; 346 } 347 348 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream) 349 { 350 struct snd_soc_pcm_runtime *rtd = substream->private_data; 351 struct snd_soc_device *socdev = rtd->socdev; 352 struct snd_soc_codec *codec = socdev->codec; 353 354 /* deactivate */ 355 if (!codec->active) { 356 udelay(50); 357 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 358 } 359 } 360 361 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 362 { 363 struct snd_soc_codec *codec = dai->codec; 364 u16 reg; 365 366 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 367 if (mute) 368 reg |= TLV320AIC23_DACM_MUTE; 369 370 else 371 reg &= ~TLV320AIC23_DACM_MUTE; 372 373 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 374 375 return 0; 376 } 377 378 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 379 unsigned int fmt) 380 { 381 struct snd_soc_codec *codec = codec_dai->codec; 382 u16 iface_reg; 383 384 iface_reg = 385 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 386 387 /* set master/slave audio interface */ 388 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 389 case SND_SOC_DAIFMT_CBM_CFM: 390 iface_reg |= TLV320AIC23_MS_MASTER; 391 break; 392 case SND_SOC_DAIFMT_CBS_CFS: 393 break; 394 default: 395 return -EINVAL; 396 397 } 398 399 /* interface format */ 400 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 401 case SND_SOC_DAIFMT_I2S: 402 iface_reg |= TLV320AIC23_FOR_I2S; 403 break; 404 case SND_SOC_DAIFMT_DSP_A: 405 iface_reg |= TLV320AIC23_FOR_DSP; 406 break; 407 case SND_SOC_DAIFMT_RIGHT_J: 408 break; 409 case SND_SOC_DAIFMT_LEFT_J: 410 iface_reg |= TLV320AIC23_FOR_LJUST; 411 break; 412 default: 413 return -EINVAL; 414 415 } 416 417 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 418 419 return 0; 420 } 421 422 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 423 int clk_id, unsigned int freq, int dir) 424 { 425 struct snd_soc_codec *codec = codec_dai->codec; 426 427 switch (freq) { 428 case 12000000: 429 return 0; 430 } 431 return -EINVAL; 432 } 433 434 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 435 enum snd_soc_bias_level level) 436 { 437 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 438 439 switch (level) { 440 case SND_SOC_BIAS_ON: 441 /* vref/mid, osc on, dac unmute */ 442 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 443 break; 444 case SND_SOC_BIAS_PREPARE: 445 break; 446 case SND_SOC_BIAS_STANDBY: 447 /* everything off except vref/vmid, */ 448 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 449 break; 450 case SND_SOC_BIAS_OFF: 451 /* everything off, dac mute, inactive */ 452 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 453 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 454 break; 455 } 456 codec->bias_level = level; 457 return 0; 458 } 459 460 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 461 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 462 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 463 464 struct snd_soc_dai tlv320aic23_dai = { 465 .name = "tlv320aic23", 466 .playback = { 467 .stream_name = "Playback", 468 .channels_min = 2, 469 .channels_max = 2, 470 .rates = AIC23_RATES, 471 .formats = AIC23_FORMATS,}, 472 .capture = { 473 .stream_name = "Capture", 474 .channels_min = 2, 475 .channels_max = 2, 476 .rates = AIC23_RATES, 477 .formats = AIC23_FORMATS,}, 478 .ops = { 479 .prepare = tlv320aic23_pcm_prepare, 480 .hw_params = tlv320aic23_hw_params, 481 .shutdown = tlv320aic23_shutdown, 482 }, 483 .dai_ops = { 484 .digital_mute = tlv320aic23_mute, 485 .set_fmt = tlv320aic23_set_dai_fmt, 486 .set_sysclk = tlv320aic23_set_dai_sysclk, 487 } 488 }; 489 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 490 491 static int tlv320aic23_suspend(struct platform_device *pdev, 492 pm_message_t state) 493 { 494 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 495 struct snd_soc_codec *codec = socdev->codec; 496 497 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 498 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 499 500 return 0; 501 } 502 503 static int tlv320aic23_resume(struct platform_device *pdev) 504 { 505 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 506 struct snd_soc_codec *codec = socdev->codec; 507 int i; 508 u16 reg; 509 510 /* Sync reg_cache with the hardware */ 511 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { 512 u16 val = tlv320aic23_read_reg_cache(codec, reg); 513 tlv320aic23_write(codec, reg, val); 514 } 515 516 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 517 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); 518 519 return 0; 520 } 521 522 /* 523 * initialise the AIC23 driver 524 * register the mixer and dsp interfaces with the kernel 525 */ 526 static int tlv320aic23_init(struct snd_soc_device *socdev) 527 { 528 struct snd_soc_codec *codec = socdev->codec; 529 int ret = 0; 530 u16 reg; 531 532 codec->name = "tlv320aic23"; 533 codec->owner = THIS_MODULE; 534 codec->read = tlv320aic23_read_reg_cache; 535 codec->write = tlv320aic23_write; 536 codec->set_bias_level = tlv320aic23_set_bias_level; 537 codec->dai = &tlv320aic23_dai; 538 codec->num_dai = 1; 539 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 540 codec->reg_cache = 541 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 542 if (codec->reg_cache == NULL) 543 return -ENOMEM; 544 545 /* Reset codec */ 546 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 547 548 /* register pcms */ 549 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 550 if (ret < 0) { 551 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 552 goto pcm_err; 553 } 554 555 /* power on device */ 556 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 557 558 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 559 560 /* Unmute input */ 561 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 562 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 563 (reg & (~TLV320AIC23_LIM_MUTED)) | 564 (TLV320AIC23_LRS_ENABLED)); 565 566 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 567 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 568 (reg & (~TLV320AIC23_LIM_MUTED)) | 569 TLV320AIC23_LRS_ENABLED); 570 571 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 572 tlv320aic23_write(codec, TLV320AIC23_ANLG, 573 (reg) & (~TLV320AIC23_BYPASS_ON) & 574 (~TLV320AIC23_MICM_MUTED)); 575 576 /* Default output volume */ 577 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 578 TLV320AIC23_DEFAULT_OUT_VOL & 579 TLV320AIC23_OUT_VOL_MASK); 580 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 581 TLV320AIC23_DEFAULT_OUT_VOL & 582 TLV320AIC23_OUT_VOL_MASK); 583 584 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 585 586 tlv320aic23_add_controls(codec); 587 tlv320aic23_add_widgets(codec); 588 ret = snd_soc_register_card(socdev); 589 if (ret < 0) { 590 printk(KERN_ERR "tlv320aic23: failed to register card\n"); 591 goto card_err; 592 } 593 594 return ret; 595 596 card_err: 597 snd_soc_free_pcms(socdev); 598 snd_soc_dapm_free(socdev); 599 pcm_err: 600 kfree(codec->reg_cache); 601 return ret; 602 } 603 static struct snd_soc_device *tlv320aic23_socdev; 604 605 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 606 /* 607 * If the i2c layer weren't so broken, we could pass this kind of data 608 * around 609 */ 610 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 611 const struct i2c_device_id *i2c_id) 612 { 613 struct snd_soc_device *socdev = tlv320aic23_socdev; 614 struct snd_soc_codec *codec = socdev->codec; 615 int ret; 616 617 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 618 return -EINVAL; 619 620 i2c_set_clientdata(i2c, codec); 621 codec->control_data = i2c; 622 623 ret = tlv320aic23_init(socdev); 624 if (ret < 0) { 625 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 626 goto err; 627 } 628 return ret; 629 630 err: 631 kfree(codec); 632 kfree(i2c); 633 return ret; 634 } 635 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 636 { 637 put_device(&i2c->dev); 638 return 0; 639 } 640 641 static const struct i2c_device_id tlv320aic23_id[] = { 642 {"tlv320aic23", 0}, 643 {} 644 }; 645 646 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 647 648 static struct i2c_driver tlv320aic23_i2c_driver = { 649 .driver = { 650 .name = "tlv320aic23", 651 }, 652 .probe = tlv320aic23_codec_probe, 653 .remove = __exit_p(tlv320aic23_i2c_remove), 654 .id_table = tlv320aic23_id, 655 }; 656 657 #endif 658 659 static int tlv320aic23_probe(struct platform_device *pdev) 660 { 661 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 662 struct snd_soc_codec *codec; 663 int ret = 0; 664 665 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 666 667 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 668 if (codec == NULL) 669 return -ENOMEM; 670 671 socdev->codec = codec; 672 mutex_init(&codec->mutex); 673 INIT_LIST_HEAD(&codec->dapm_widgets); 674 INIT_LIST_HEAD(&codec->dapm_paths); 675 676 tlv320aic23_socdev = socdev; 677 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 678 codec->hw_write = (hw_write_t) i2c_smbus_write_byte_data; 679 codec->hw_read = NULL; 680 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 681 if (ret != 0) 682 printk(KERN_ERR "can't add i2c driver"); 683 #endif 684 return ret; 685 } 686 687 static int tlv320aic23_remove(struct platform_device *pdev) 688 { 689 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 690 struct snd_soc_codec *codec = socdev->codec; 691 692 if (codec->control_data) 693 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 694 695 snd_soc_free_pcms(socdev); 696 snd_soc_dapm_free(socdev); 697 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 698 i2c_del_driver(&tlv320aic23_i2c_driver); 699 #endif 700 kfree(codec->reg_cache); 701 kfree(codec); 702 703 return 0; 704 } 705 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 706 .probe = tlv320aic23_probe, 707 .remove = tlv320aic23_remove, 708 .suspend = tlv320aic23_suspend, 709 .resume = tlv320aic23_resume, 710 }; 711 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 712 713 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 714 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 715 MODULE_LICENSE("GPL"); 716