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 struct tlv320aic23_srate_reg_info { 41 u32 sample_rate; 42 u8 control; /* SR3, SR2, SR1, SR0 and BOSR */ 43 u8 divider; /* if 0 CLKIN = MCLK, if 1 CLKIN = MCLK/2 */ 44 }; 45 46 /* 47 * AIC23 register cache 48 */ 49 static const u16 tlv320aic23_reg[] = { 50 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */ 51 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */ 52 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */ 53 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */ 54 }; 55 56 /* 57 * read tlv320aic23 register cache 58 */ 59 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec 60 *codec, unsigned int reg) 61 { 62 u16 *cache = codec->reg_cache; 63 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 64 return -1; 65 return cache[reg]; 66 } 67 68 /* 69 * write tlv320aic23 register cache 70 */ 71 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec, 72 u8 reg, u16 value) 73 { 74 u16 *cache = codec->reg_cache; 75 if (reg >= ARRAY_SIZE(tlv320aic23_reg)) 76 return; 77 cache[reg] = value; 78 } 79 80 /* 81 * write to the tlv320aic23 register space 82 */ 83 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg, 84 unsigned int value) 85 { 86 87 u8 data[2]; 88 89 /* TLV320AIC23 has 7 bit address and 9 bits of data 90 * so we need to switch one data bit into reg and rest 91 * of data into val 92 */ 93 94 if ((reg < 0 || reg > 9) && (reg != 15)) { 95 printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg); 96 return -1; 97 } 98 99 data[0] = (reg << 1) | (value >> 8 & 0x01); 100 data[1] = value & 0xff; 101 102 tlv320aic23_write_reg_cache(codec, reg, value); 103 104 if (codec->hw_write(codec->control_data, data, 2) == 2) 105 return 0; 106 107 printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__, 108 value, reg); 109 110 return -EIO; 111 } 112 113 static const char *rec_src_text[] = { "Line", "Mic" }; 114 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 115 116 static const struct soc_enum rec_src_enum = 117 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 118 119 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls = 120 SOC_DAPM_ENUM("Input Select", rec_src_enum); 121 122 static const struct soc_enum tlv320aic23_rec_src = 123 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text); 124 static const struct soc_enum tlv320aic23_deemph = 125 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text); 126 127 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); 128 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); 129 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); 130 131 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, 132 struct snd_ctl_elem_value *ucontrol) 133 { 134 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 135 u16 val, reg; 136 137 val = (ucontrol->value.integer.value[0] & 0x07); 138 139 /* linear conversion to userspace 140 * 000 = -6db 141 * 001 = -9db 142 * 010 = -12db 143 * 011 = -18db (Min) 144 * 100 = 0db (Max) 145 */ 146 val = (val >= 4) ? 4 : (3 - val); 147 148 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0); 149 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); 150 151 return 0; 152 } 153 154 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, 155 struct snd_ctl_elem_value *ucontrol) 156 { 157 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 158 u16 val; 159 160 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0); 161 val = val >> 6; 162 val = (val >= 4) ? 4 : (3 - val); 163 ucontrol->value.integer.value[0] = val; 164 return 0; 165 166 } 167 168 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 169 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 170 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 171 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 172 .tlv.p = (tlv_array), \ 173 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\ 174 .put = snd_soc_tlv320aic23_put_volsw, \ 175 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 176 177 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = { 178 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL, 179 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv), 180 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1), 181 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL, 182 TLV320AIC23_RINVOL, 7, 1, 0), 183 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL, 184 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv), 185 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1), 186 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0), 187 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG, 188 6, 4, 0, sidetone_vol_tlv), 189 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph), 190 }; 191 192 /* add non dapm controls */ 193 static int tlv320aic23_add_controls(struct snd_soc_codec *codec) 194 { 195 196 int err, i; 197 198 for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) { 199 err = snd_ctl_add(codec->card, 200 snd_soc_cnew(&tlv320aic23_snd_controls[i], 201 codec, NULL)); 202 if (err < 0) 203 return err; 204 } 205 206 return 0; 207 208 } 209 210 /* PGA Mixer controls for Line and Mic switch */ 211 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = { 212 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0), 213 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0), 214 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0), 215 }; 216 217 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 218 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1), 219 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1), 220 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0, 221 &tlv320aic23_rec_src_mux_controls), 222 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1, 223 &tlv320aic23_output_mixer_controls[0], 224 ARRAY_SIZE(tlv320aic23_output_mixer_controls)), 225 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0), 226 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0), 227 228 SND_SOC_DAPM_OUTPUT("LHPOUT"), 229 SND_SOC_DAPM_OUTPUT("RHPOUT"), 230 SND_SOC_DAPM_OUTPUT("LOUT"), 231 SND_SOC_DAPM_OUTPUT("ROUT"), 232 233 SND_SOC_DAPM_INPUT("LLINEIN"), 234 SND_SOC_DAPM_INPUT("RLINEIN"), 235 236 SND_SOC_DAPM_INPUT("MICIN"), 237 }; 238 239 static const struct snd_soc_dapm_route intercon[] = { 240 /* Output Mixer */ 241 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 242 {"Output Mixer", "Playback Switch", "DAC"}, 243 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"}, 244 245 /* Outputs */ 246 {"RHPOUT", NULL, "Output Mixer"}, 247 {"LHPOUT", NULL, "Output Mixer"}, 248 {"LOUT", NULL, "Output Mixer"}, 249 {"ROUT", NULL, "Output Mixer"}, 250 251 /* Inputs */ 252 {"Line Input", "NULL", "LLINEIN"}, 253 {"Line Input", "NULL", "RLINEIN"}, 254 255 {"Mic Input", "NULL", "MICIN"}, 256 257 /* input mux */ 258 {"Capture Source", "Line", "Line Input"}, 259 {"Capture Source", "Mic", "Mic Input"}, 260 {"ADC", NULL, "Capture Source"}, 261 262 }; 263 264 /* tlv320aic23 related */ 265 static const struct tlv320aic23_srate_reg_info srate_reg_info[] = { 266 {4000, 0x06, 1}, /* 4000 */ 267 {8000, 0x06, 0}, /* 8000 */ 268 {16000, 0x0C, 1}, /* 16000 */ 269 {22050, 0x11, 1}, /* 22050 */ 270 {24000, 0x00, 1}, /* 24000 */ 271 {32000, 0x0C, 0}, /* 32000 */ 272 {44100, 0x11, 0}, /* 44100 */ 273 {48000, 0x00, 0}, /* 48000 */ 274 {88200, 0x1F, 0}, /* 88200 */ 275 {96000, 0x0E, 0}, /* 96000 */ 276 }; 277 278 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec) 279 { 280 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 281 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 282 283 /* set up audio path interconnects */ 284 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); 285 286 snd_soc_dapm_new_widgets(codec); 287 return 0; 288 } 289 290 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream, 291 struct snd_pcm_hw_params *params) 292 { 293 struct snd_soc_pcm_runtime *rtd = substream->private_data; 294 struct snd_soc_device *socdev = rtd->socdev; 295 struct snd_soc_codec *codec = socdev->codec; 296 u16 iface_reg, data; 297 u8 count = 0; 298 299 iface_reg = 300 tlv320aic23_read_reg_cache(codec, 301 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2); 302 303 /* Search for the right sample rate */ 304 /* Verify what happens if the rate is not supported 305 * now it goes to 96Khz */ 306 while ((srate_reg_info[count].sample_rate != params_rate(params)) && 307 (count < ARRAY_SIZE(srate_reg_info))) { 308 count++; 309 } 310 311 data = (srate_reg_info[count].divider << TLV320AIC23_CLKIN_SHIFT) | 312 (srate_reg_info[count]. control << TLV320AIC23_BOSR_SHIFT) | 313 TLV320AIC23_USB_CLK_ON; 314 315 tlv320aic23_write(codec, TLV320AIC23_SRATE, data); 316 317 switch (params_format(params)) { 318 case SNDRV_PCM_FORMAT_S16_LE: 319 break; 320 case SNDRV_PCM_FORMAT_S20_3LE: 321 iface_reg |= (0x01 << 2); 322 break; 323 case SNDRV_PCM_FORMAT_S24_LE: 324 iface_reg |= (0x02 << 2); 325 break; 326 case SNDRV_PCM_FORMAT_S32_LE: 327 iface_reg |= (0x03 << 2); 328 break; 329 } 330 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 331 332 return 0; 333 } 334 335 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream) 336 { 337 struct snd_soc_pcm_runtime *rtd = substream->private_data; 338 struct snd_soc_device *socdev = rtd->socdev; 339 struct snd_soc_codec *codec = socdev->codec; 340 341 /* set active */ 342 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001); 343 344 return 0; 345 } 346 347 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream) 348 { 349 struct snd_soc_pcm_runtime *rtd = substream->private_data; 350 struct snd_soc_device *socdev = rtd->socdev; 351 struct snd_soc_codec *codec = socdev->codec; 352 353 /* deactivate */ 354 if (!codec->active) { 355 udelay(50); 356 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 357 } 358 } 359 360 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute) 361 { 362 struct snd_soc_codec *codec = dai->codec; 363 u16 reg; 364 365 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT); 366 if (mute) 367 reg |= TLV320AIC23_DACM_MUTE; 368 369 else 370 reg &= ~TLV320AIC23_DACM_MUTE; 371 372 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg); 373 374 return 0; 375 } 376 377 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai, 378 unsigned int fmt) 379 { 380 struct snd_soc_codec *codec = codec_dai->codec; 381 u16 iface_reg; 382 383 iface_reg = 384 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03); 385 386 /* set master/slave audio interface */ 387 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 388 case SND_SOC_DAIFMT_CBM_CFM: 389 iface_reg |= TLV320AIC23_MS_MASTER; 390 break; 391 case SND_SOC_DAIFMT_CBS_CFS: 392 break; 393 default: 394 return -EINVAL; 395 396 } 397 398 /* interface format */ 399 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 400 case SND_SOC_DAIFMT_I2S: 401 iface_reg |= TLV320AIC23_FOR_I2S; 402 break; 403 case SND_SOC_DAIFMT_DSP_A: 404 iface_reg |= TLV320AIC23_FOR_DSP; 405 break; 406 case SND_SOC_DAIFMT_RIGHT_J: 407 break; 408 case SND_SOC_DAIFMT_LEFT_J: 409 iface_reg |= TLV320AIC23_FOR_LJUST; 410 break; 411 default: 412 return -EINVAL; 413 414 } 415 416 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg); 417 418 return 0; 419 } 420 421 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, 422 int clk_id, unsigned int freq, int dir) 423 { 424 struct snd_soc_codec *codec = codec_dai->codec; 425 426 switch (freq) { 427 case 12000000: 428 return 0; 429 } 430 return -EINVAL; 431 } 432 433 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, 434 enum snd_soc_bias_level level) 435 { 436 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f; 437 438 switch (level) { 439 case SND_SOC_BIAS_ON: 440 /* vref/mid, osc on, dac unmute */ 441 tlv320aic23_write(codec, TLV320AIC23_PWR, reg); 442 break; 443 case SND_SOC_BIAS_PREPARE: 444 break; 445 case SND_SOC_BIAS_STANDBY: 446 /* everything off except vref/vmid, */ 447 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040); 448 break; 449 case SND_SOC_BIAS_OFF: 450 /* everything off, dac mute, inactive */ 451 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 452 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff); 453 break; 454 } 455 codec->bias_level = level; 456 return 0; 457 } 458 459 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000 460 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 461 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) 462 463 struct snd_soc_dai tlv320aic23_dai = { 464 .name = "tlv320aic23", 465 .playback = { 466 .stream_name = "Playback", 467 .channels_min = 2, 468 .channels_max = 2, 469 .rates = AIC23_RATES, 470 .formats = AIC23_FORMATS,}, 471 .capture = { 472 .stream_name = "Capture", 473 .channels_min = 2, 474 .channels_max = 2, 475 .rates = AIC23_RATES, 476 .formats = AIC23_FORMATS,}, 477 .ops = { 478 .prepare = tlv320aic23_pcm_prepare, 479 .hw_params = tlv320aic23_hw_params, 480 .shutdown = tlv320aic23_shutdown, 481 }, 482 .dai_ops = { 483 .digital_mute = tlv320aic23_mute, 484 .set_fmt = tlv320aic23_set_dai_fmt, 485 .set_sysclk = tlv320aic23_set_dai_sysclk, 486 } 487 }; 488 EXPORT_SYMBOL_GPL(tlv320aic23_dai); 489 490 static int tlv320aic23_suspend(struct platform_device *pdev, 491 pm_message_t state) 492 { 493 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 494 struct snd_soc_codec *codec = socdev->codec; 495 496 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0); 497 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 498 499 return 0; 500 } 501 502 static int tlv320aic23_resume(struct platform_device *pdev) 503 { 504 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 505 struct snd_soc_codec *codec = socdev->codec; 506 int i; 507 u16 reg; 508 509 /* Sync reg_cache with the hardware */ 510 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) { 511 u16 val = tlv320aic23_read_reg_cache(codec, reg); 512 tlv320aic23_write(codec, reg, val); 513 } 514 515 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 516 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level); 517 518 return 0; 519 } 520 521 /* 522 * initialise the AIC23 driver 523 * register the mixer and dsp interfaces with the kernel 524 */ 525 static int tlv320aic23_init(struct snd_soc_device *socdev) 526 { 527 struct snd_soc_codec *codec = socdev->codec; 528 int ret = 0; 529 u16 reg; 530 531 codec->name = "tlv320aic23"; 532 codec->owner = THIS_MODULE; 533 codec->read = tlv320aic23_read_reg_cache; 534 codec->write = tlv320aic23_write; 535 codec->set_bias_level = tlv320aic23_set_bias_level; 536 codec->dai = &tlv320aic23_dai; 537 codec->num_dai = 1; 538 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg); 539 codec->reg_cache = 540 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL); 541 if (codec->reg_cache == NULL) 542 return -ENOMEM; 543 544 /* Reset codec */ 545 tlv320aic23_write(codec, TLV320AIC23_RESET, 0); 546 547 /* register pcms */ 548 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 549 if (ret < 0) { 550 printk(KERN_ERR "tlv320aic23: failed to create pcms\n"); 551 goto pcm_err; 552 } 553 554 /* power on device */ 555 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 556 557 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K); 558 559 /* Unmute input */ 560 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL); 561 tlv320aic23_write(codec, TLV320AIC23_LINVOL, 562 (reg & (~TLV320AIC23_LIM_MUTED)) | 563 (TLV320AIC23_LRS_ENABLED)); 564 565 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL); 566 tlv320aic23_write(codec, TLV320AIC23_RINVOL, 567 (reg & (~TLV320AIC23_LIM_MUTED)) | 568 TLV320AIC23_LRS_ENABLED); 569 570 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG); 571 tlv320aic23_write(codec, TLV320AIC23_ANLG, 572 (reg) & (~TLV320AIC23_BYPASS_ON) & 573 (~TLV320AIC23_MICM_MUTED)); 574 575 /* Default output volume */ 576 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL, 577 TLV320AIC23_DEFAULT_OUT_VOL & 578 TLV320AIC23_OUT_VOL_MASK); 579 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL, 580 TLV320AIC23_DEFAULT_OUT_VOL & 581 TLV320AIC23_OUT_VOL_MASK); 582 583 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1); 584 585 tlv320aic23_add_controls(codec); 586 tlv320aic23_add_widgets(codec); 587 ret = snd_soc_register_card(socdev); 588 if (ret < 0) { 589 printk(KERN_ERR "tlv320aic23: failed to register card\n"); 590 goto card_err; 591 } 592 593 return ret; 594 595 card_err: 596 snd_soc_free_pcms(socdev); 597 snd_soc_dapm_free(socdev); 598 pcm_err: 599 kfree(codec->reg_cache); 600 return ret; 601 } 602 static struct snd_soc_device *tlv320aic23_socdev; 603 604 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 605 /* 606 * If the i2c layer weren't so broken, we could pass this kind of data 607 * around 608 */ 609 static int tlv320aic23_codec_probe(struct i2c_client *i2c, 610 const struct i2c_device_id *i2c_id) 611 { 612 struct snd_soc_device *socdev = tlv320aic23_socdev; 613 struct snd_soc_codec *codec = socdev->codec; 614 int ret; 615 616 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 617 return -EINVAL; 618 619 i2c_set_clientdata(i2c, codec); 620 codec->control_data = i2c; 621 622 ret = tlv320aic23_init(socdev); 623 if (ret < 0) { 624 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n"); 625 goto err; 626 } 627 return ret; 628 629 err: 630 kfree(codec); 631 kfree(i2c); 632 return ret; 633 } 634 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c) 635 { 636 put_device(&i2c->dev); 637 return 0; 638 } 639 640 static const struct i2c_device_id tlv320aic23_id[] = { 641 {"tlv320aic23", 0}, 642 {} 643 }; 644 645 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id); 646 647 static struct i2c_driver tlv320aic23_i2c_driver = { 648 .driver = { 649 .name = "tlv320aic23", 650 }, 651 .probe = tlv320aic23_codec_probe, 652 .remove = __exit_p(tlv320aic23_i2c_remove), 653 .id_table = tlv320aic23_id, 654 }; 655 656 #endif 657 658 static int tlv320aic23_probe(struct platform_device *pdev) 659 { 660 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 661 struct snd_soc_codec *codec; 662 int ret = 0; 663 664 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION); 665 666 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 667 if (codec == NULL) 668 return -ENOMEM; 669 670 socdev->codec = codec; 671 mutex_init(&codec->mutex); 672 INIT_LIST_HEAD(&codec->dapm_widgets); 673 INIT_LIST_HEAD(&codec->dapm_paths); 674 675 tlv320aic23_socdev = socdev; 676 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 677 codec->hw_write = (hw_write_t) i2c_master_send; 678 codec->hw_read = NULL; 679 ret = i2c_add_driver(&tlv320aic23_i2c_driver); 680 if (ret != 0) 681 printk(KERN_ERR "can't add i2c driver"); 682 #endif 683 return ret; 684 } 685 686 static int tlv320aic23_remove(struct platform_device *pdev) 687 { 688 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 689 struct snd_soc_codec *codec = socdev->codec; 690 691 if (codec->control_data) 692 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF); 693 694 snd_soc_free_pcms(socdev); 695 snd_soc_dapm_free(socdev); 696 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 697 i2c_del_driver(&tlv320aic23_i2c_driver); 698 #endif 699 kfree(codec->reg_cache); 700 kfree(codec); 701 702 return 0; 703 } 704 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = { 705 .probe = tlv320aic23_probe, 706 .remove = tlv320aic23_remove, 707 .suspend = tlv320aic23_suspend, 708 .resume = tlv320aic23_resume, 709 }; 710 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23); 711 712 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver"); 713 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>"); 714 MODULE_LICENSE("GPL"); 715