target/linux/xburst/files-2.6.32/sound/soc/codecs/jzcodec.c

   1 /*
   2  * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  *  You should have received a copy of the  GNU General Public License along
   9  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  10  *  675 Mass Ave, Cambridge, MA 02139, USA.
  11  *
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/delay.h>
  18
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/initval.h>
  23 #include <sound/soc-dapm.h>
  24 #include <sound/soc.h>
  25
  26 #define JZ_REG_CODEC_1 0x0
  27 #define JZ_REG_CODEC_2 0x1
  28
  29 #define JZ_CODEC_1_LINE_ENABLE BIT(29)
  30 #define JZ_CODEC_1_MIC_ENABLE BIT(28)
  31 #define JZ_CODEC_1_SW1_ENABLE BIT(27)
  32 #define JZ_CODEC_1_ADC_ENABLE BIT(26)
  33 #define JZ_CODEC_1_SW2_ENABLE BIT(25)
  34 #define JZ_CODEC_1_DAC_ENABLE BIT(24)
  35 #define JZ_CODEC_1_VREF_DISABLE BIT(20)
  36 #define JZ_CODEC_1_VREF_AMP_DISABLE BIT(19)
  37 #define JZ_CODEC_1_VREF_PULL_DOWN BIT(18)
  38 #define JZ_CODEC_1_VREF_LOW_CURRENT BIT(17)
  39 #define JZ_CODEC_1_VREF_HIGH_CURRENT BIT(16)
  40 #define JZ_CODEC_1_HEADPHONE_DISABLE BIT(14)
  41 #define JZ_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
  42 #define JZ_CODEC_1_HEADPHONE_CHANGE BIT(12)
  43 #define JZ_CODEC_1_HEADPHONE_PULL_DOWN_M BIT(11)
  44 #define JZ_CODEC_1_HEADPHONE_PULL_DOWN_R BIT(10)
  45 #define JZ_CODEC_1_HEADPHONE_POWER_DOWN_M BIT(9)
  46 #define JZ_CODEC_1_HEADPHONE_POWER_DOWN BIT(8)
  47 #define JZ_CODEC_1_SUSPEND BIT(1)
  48 #define JZ_CODEC_1_RESET BIT(0)
  49
  50 #define JZ_CODEC_1_LINE_ENABLE_OFFSET 29
  51 #define JZ_CODEC_1_MIC_ENABLE_OFFSET 28
  52 #define JZ_CODEC_1_SW1_ENABLE_OFFSET 27
  53 #define JZ_CODEC_1_ADC_ENABLE_OFFSET 26
  54 #define JZ_CODEC_1_SW2_ENABLE_OFFSET 25
  55 #define JZ_CODEC_1_DAC_ENABLE_OFFSET 24
  56 #define JZ_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
  57 #define JZ_CODEC_1_HEADPHONE_POWER_DOWN_OFFSET 8
  58
  59 #define JZ_CODEC_2_INPUT_VOLUME_MASK            0x1f0000
  60 #define JZ_CODEC_2_SAMPLE_RATE_MASK                     0x000f00
  61 #define JZ_CODEC_2_MIC_BOOST_GAIN_MASK          0x000030
  62 #define JZ_CODEC_2_HEADPHONE_VOLUME_MASK        0x000003
  63
  64 #define JZ_CODEC_2_INPUT_VOLUME_OFFSET          16
  65 #define JZ_CODEC_2_SAMPLE_RATE_OFFSET            8
  66 #define JZ_CODEC_2_MIC_BOOST_GAIN_OFFSET         4
  67 #define JZ_CODEC_2_HEADPHONE_VOLUME_OFFSET       0
  68
  69 struct jz_codec {
  70         void __iomem *base;
  71         struct resource *mem;
  72
  73         uint32_t reg_cache[2];
  74         struct snd_soc_codec codec;
  75 };
  76
  77 inline static struct jz_codec *codec_to_jz(struct snd_soc_codec *codec)
  78 {
  79         return container_of(codec, struct jz_codec, codec);
  80 }
  81
  82 static unsigned int jz_codec_read(struct snd_soc_codec *codec, unsigned int reg)
  83 {
  84         struct jz_codec *jz_codec = codec_to_jz(codec);
  85         return readl(jz_codec->base + (reg << 2));
  86 }
  87
  88 static int jz_codec_write(struct snd_soc_codec *codec, unsigned int reg,
  89 unsigned int val)
  90 {
  91         struct jz_codec *jz_codec = codec_to_jz(codec);
  92         jz_codec->reg_cache[reg] = val;
  93
  94         writel(val, jz_codec->base + (reg << 2));
  95         return 0;
  96 }
  97
  98 static const struct snd_kcontrol_new jz_codec_controls[] = {
  99         SOC_SINGLE("Master Playback Volume", JZ_REG_CODEC_2,
 100                         JZ_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0),
 101         SOC_SINGLE("Capture Volume", JZ_REG_CODEC_2,
 102                         JZ_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0),
 103         SOC_SINGLE("Master Playback Switch", JZ_REG_CODEC_1,
 104                         JZ_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
 105         SOC_SINGLE("Mic Capture Volume", JZ_REG_CODEC_2,
 106                         JZ_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0),
 107 };
 108
 109 static const struct snd_kcontrol_new jz_codec_output_controls[] = {
 110         SOC_DAPM_SINGLE("Bypass Switch", JZ_REG_CODEC_1,
 111                         JZ_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
 112         SOC_DAPM_SINGLE("DAC Switch", JZ_REG_CODEC_1,
 113                         JZ_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
 114 };
 115
 116 static const struct snd_kcontrol_new jz_codec_input_controls[] =
 117 {
 118         SOC_DAPM_SINGLE("Line Capture Switch", JZ_REG_CODEC_1,
 119                         JZ_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
 120         SOC_DAPM_SINGLE("Mic Capture Switch", JZ_REG_CODEC_1,
 121                         JZ_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
 122 };
 123
 124 static const struct snd_soc_dapm_widget jz_codec_dapm_widgets[] = {
 125         SND_SOC_DAPM_ADC("ADC", "Capture", JZ_REG_CODEC_1,
 126                         JZ_CODEC_1_ADC_ENABLE_OFFSET, 0),
 127         SND_SOC_DAPM_DAC("DAC", "Playback", JZ_REG_CODEC_1,
 128                         JZ_CODEC_1_DAC_ENABLE_OFFSET, 0),
 129
 130         SND_SOC_DAPM_MIXER("Output Mixer", JZ_REG_CODEC_1,
 131                         JZ_CODEC_1_HEADPHONE_POWER_DOWN_OFFSET, 1,
 132                         jz_codec_output_controls,
 133                         ARRAY_SIZE(jz_codec_output_controls)),
 134
 135         SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
 136                         jz_codec_input_controls,
 137                         ARRAY_SIZE(jz_codec_input_controls)),
 138         SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 139
 140         SND_SOC_DAPM_OUTPUT("LOUT"),
 141         SND_SOC_DAPM_OUTPUT("ROUT"),
 142
 143         SND_SOC_DAPM_INPUT("MIC"),
 144         SND_SOC_DAPM_INPUT("LIN"),
 145         SND_SOC_DAPM_INPUT("RIN"),
 146 };
 147
 148 static const struct snd_soc_dapm_route jz_codec_dapm_routes[] = {
 149
 150         {"Line Input", NULL, "LIN"},
 151         {"Line Input", NULL, "RIN"},
 152
 153         {"Input Mixer", "Line Capture Switch", "Line Input"},
 154         {"Input Mixer", "Mic Capture Switch", "MIC"},
 155
 156         {"ADC", NULL, "Input Mixer"},
 157
 158         {"Output Mixer", "Bypass Switch", "Input Mixer"},
 159         {"Output Mixer", "DAC Switch", "DAC"},
 160
 161         {"LOUT", NULL, "Output Mixer"},
 162         {"ROUT", NULL, "Output Mixer"},
 163 };
 164
 165 static int jz_codec_hw_params(struct snd_pcm_substream *substream, struct
 166 snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 167 {
 168         uint32_t val;
 169         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 170         struct snd_soc_device *socdev = rtd->socdev;
 171         struct snd_soc_codec *codec = socdev->card->codec;
 172
 173         switch (params_format(params)) {
 174         case SNDRV_PCM_FORMAT_S8:
 175         case SNDRV_PCM_FORMAT_S16_LE:
 176         case SNDRV_PCM_FORMAT_S18_3LE:
 177                 break;
 178         default:
 179                 return -EINVAL;
 180                 break;
 181         }
 182
 183         switch (params_rate(params)) {
 184         case 8000:
 185                 val = 0;
 186                 break;
 187         case 11025:
 188                 val = 1;
 189                 break;
 190         case 12000:
 191                 val = 2;
 192                 break;
 193         case 16000:
 194                 val = 3;
 195                 break;
 196         case 22050:
 197                 val = 4;
 198                 break;
 199         case 24000:
 200                 val = 5;
 201                 break;
 202         case 32000:
 203                 val = 6;
 204                 break;
 205         case 44100:
 206                 val = 7;
 207                 break;
 208         case 48000:
 209                 val = 8;
 210                 break;
 211         default:
 212                 return -EINVAL;
 213         }
 214
 215         val <<= JZ_CODEC_2_SAMPLE_RATE_OFFSET;
 216
 217         snd_soc_update_bits(codec, JZ_REG_CODEC_2,
 218                                 JZ_CODEC_2_SAMPLE_RATE_MASK, val);
 219
 220         return 0;
 221 }
 222
 223 static int jz_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 224 {
 225         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 226         case SND_SOC_DAIFMT_CBM_CFM:
 227                 break;
 228         default:
 229                 return -EINVAL;
 230         }
 231
 232         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 233         case SND_SOC_DAIFMT_I2S:
 234                 break;
 235         default:
 236                 return -EINVAL;
 237         }
 238
 239         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 240         case SND_SOC_DAIFMT_NB_NF:
 241                 break;
 242         default:
 243                 return -EINVAL;
 244         }
 245
 246         return 0;
 247 }
 248
 249 static int jz_codec_set_sysclk(struct snd_soc_dai *codec_dai,
 250                 int clk_id, unsigned int freq, int dir)
 251 {
 252         return 0;
 253 }
 254
 255
 256 static struct snd_soc_dai_ops jz_codec_dai_ops = {
 257         .hw_params = jz_codec_hw_params,
 258         .set_fmt = jz_codec_set_fmt,
 259 /*      .set_clkdiv = jz_codec_set_clkdiv,*/
 260         .set_sysclk = jz_codec_set_sysclk,
 261 };
 262
 263 struct snd_soc_dai jz_codec_dai = {
 264         .name = "jz-codec",
 265         .playback = {
 266                 .stream_name = "Playback",
 267                 .channels_min = 2,
 268                 .channels_max = 2,
 269                 .rates = SNDRV_PCM_RATE_8000_44100,
 270                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 271         },
 272         .capture = {
 273                 .stream_name = "Capture",
 274                 .channels_min = 2,
 275                 .channels_max = 2,
 276                 .rates = SNDRV_PCM_RATE_8000_44100,
 277                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 278         },
 279         .ops = &jz_codec_dai_ops,
 280         .symmetric_rates = 1,
 281 };
 282 EXPORT_SYMBOL_GPL(jz_codec_dai);
 283
 284 static int jz_codec_set_bias_level(struct snd_soc_codec *codec,
 285                                 enum snd_soc_bias_level level)
 286 {
 287
 288         if (codec->bias_level == SND_SOC_BIAS_OFF && level != SND_SOC_BIAS_OFF) {
 289                 snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 290                                 JZ_CODEC_1_RESET, JZ_CODEC_1_RESET);
 291                 udelay(2);
 292
 293                 snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 294                                         JZ_CODEC_1_SUSPEND | JZ_CODEC_1_RESET, 0);
 295         }
 296         switch (level) {
 297         case SND_SOC_BIAS_ON:
 298                 snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 299                                         JZ_CODEC_1_VREF_DISABLE | JZ_CODEC_1_VREF_AMP_DISABLE |
 300                                         JZ_CODEC_1_HEADPHONE_POWER_DOWN_M |
 301                                         JZ_CODEC_1_VREF_LOW_CURRENT | JZ_CODEC_1_VREF_HIGH_CURRENT,
 302                                 0);
 303                 break;
 304         case SND_SOC_BIAS_PREPARE:
 305                 snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 306                                         JZ_CODEC_1_VREF_LOW_CURRENT | JZ_CODEC_1_VREF_HIGH_CURRENT,
 307                                         JZ_CODEC_1_VREF_LOW_CURRENT | JZ_CODEC_1_VREF_HIGH_CURRENT);
 308                 break;
 309         case SND_SOC_BIAS_STANDBY:
 310                 snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 311                                         JZ_CODEC_1_VREF_DISABLE | JZ_CODEC_1_VREF_AMP_DISABLE,
 312                                         JZ_CODEC_1_VREF_DISABLE | JZ_CODEC_1_VREF_AMP_DISABLE);
 313                 break;
 314         case SND_SOC_BIAS_OFF:
 315                 snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 316                                         JZ_CODEC_1_SUSPEND, JZ_CODEC_1_SUSPEND);
 317                 break;
 318         }
 319         codec->bias_level = level;
 320
 321         return 0;
 322 }
 323
 324
 325 static struct snd_soc_codec *jz_codec_codec;
 326
 327 static int jz_codec_dev_probe(struct platform_device *pdev)
 328 {
 329         int ret;
 330         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 331         struct snd_soc_codec *codec = jz_codec_codec;
 332
 333         BUG_ON(!codec);
 334
 335         socdev->card->codec = codec;
 336
 337         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 338         if (ret) {
 339                 dev_err(&pdev->dev, "Failed to create pcms: %d\n", ret);
 340                 goto err;
 341         }
 342         snd_soc_add_controls(codec, jz_codec_controls,
 343         ARRAY_SIZE(jz_codec_controls));
 344
 345         snd_soc_dapm_new_controls(codec, jz_codec_dapm_widgets,
 346         ARRAY_SIZE(jz_codec_dapm_widgets));
 347
 348         snd_soc_dapm_add_routes(codec, jz_codec_dapm_routes,
 349         ARRAY_SIZE(jz_codec_dapm_routes));
 350
 351         snd_soc_dapm_new_widgets(codec);
 352
 353         ret = snd_soc_init_card(socdev);
 354
 355         if (ret) {
 356                 dev_err(&pdev->dev, "Failed to register card\n");
 357                 goto err;
 358         }
 359
 360         return 0;
 361
 362 err:
 363         snd_soc_free_pcms(socdev);
 364         snd_soc_dapm_free(socdev);
 365
 366         return ret;
 367 }
 368
 369 static int jz_codec_dev_remove(struct platform_device *pdev)
 370 {
 371         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 372         snd_soc_free_pcms(socdev);
 373         snd_soc_dapm_free(socdev);
 374
 375         return 0;
 376 }
 377
 378 struct snd_soc_codec_device soc_codec_dev_jzcodec = {
 379         .probe = jz_codec_dev_probe,
 380         .remove = jz_codec_dev_remove,
 381 };
 382 EXPORT_SYMBOL_GPL(soc_codec_dev_jzcodec);
 383
 384 static int __devinit jz_codec_probe(struct platform_device *pdev)
 385 {
 386         int ret;
 387         struct jz_codec *jz_codec;
 388         struct snd_soc_codec *codec;
 389
 390         jz_codec = kzalloc(sizeof(*jz_codec), GFP_KERNEL);
 391
 392         if (!jz_codec)
 393                 return -ENOMEM;
 394
 395         jz_codec->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 396
 397         if (!jz_codec->mem) {
 398                 dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
 399                 ret = -ENOENT;
 400                 goto err_free_jz_codec;
 401         }
 402
 403         jz_codec->mem = request_mem_region(jz_codec->mem->start,
 404                                 resource_size(jz_codec->mem), pdev->name);
 405
 406         if (!jz_codec->mem) {
 407                 dev_err(&pdev->dev, "Failed to request mmio memory region\n");
 408                 ret = -EBUSY;
 409                 goto err_free_jz_codec;
 410         }
 411
 412         jz_codec->base = ioremap(jz_codec->mem->start, resource_size(jz_codec->mem));
 413
 414         if (!jz_codec->base) {
 415                 dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
 416                 ret = -EBUSY;
 417                 goto err_release_mem_region;
 418         }
 419
 420         jz_codec_dai.dev = &pdev->dev;
 421
 422         codec = &jz_codec->codec;
 423
 424         codec->dev              = &pdev->dev;
 425         codec->name             = "jz-codec";
 426         codec->owner            = THIS_MODULE;
 427
 428         codec->read             = jz_codec_read;
 429         codec->write            = jz_codec_write;
 430         codec->set_bias_level   = jz_codec_set_bias_level;
 431         codec->bias_level       = SND_SOC_BIAS_OFF;
 432
 433         codec->dai              = &jz_codec_dai;
 434         codec->num_dai          = 1;
 435
 436         codec->reg_cache        = jz_codec->reg_cache;
 437         codec->reg_cache_size   = 2;
 438
 439         codec->private_data     = jz_codec;
 440
 441         mutex_init(&codec->mutex);
 442         INIT_LIST_HEAD(&codec->dapm_widgets);
 443         INIT_LIST_HEAD(&codec->dapm_paths);
 444
 445         jz_codec_codec = codec;
 446
 447         snd_soc_update_bits(codec, JZ_REG_CODEC_1,
 448                                 JZ_CODEC_1_SW2_ENABLE, JZ_CODEC_1_SW2_ENABLE);
 449
 450
 451         platform_set_drvdata(pdev, jz_codec);
 452         ret = snd_soc_register_codec(codec);
 453
 454         if (ret) {
 455                 dev_err(&pdev->dev, "Failed to register codec\n");
 456                 goto err_iounmap;
 457         }
 458
 459         ret = snd_soc_register_dai(&jz_codec_dai);
 460         if (ret) {
 461                 dev_err(&pdev->dev, "Failed to register codec dai\n");
 462                 goto err_unregister_codec;
 463         }
 464
 465         jz_codec_set_bias_level (codec, SND_SOC_BIAS_STANDBY);
 466
 467         return 0;
 468 err_unregister_codec:
 469         snd_soc_unregister_codec(codec);
 470 err_iounmap:
 471         iounmap(jz_codec->base);
 472 err_release_mem_region:
 473         release_mem_region(jz_codec->mem->start, resource_size(jz_codec->mem));
 474 err_free_jz_codec:
 475         kfree(jz_codec);
 476
 477         return ret;
 478 }
 479
 480 static int __devexit jz_codec_remove(struct platform_device *pdev)
 481 {
 482         struct jz_codec *jz_codec = platform_get_drvdata(pdev);
 483
 484         snd_soc_unregister_dai(&jz_codec_dai);
 485         snd_soc_unregister_codec(&jz_codec->codec);
 486
 487         iounmap(jz_codec->base);
 488         release_mem_region(jz_codec->mem->start, resource_size(jz_codec->mem));
 489
 490         platform_set_drvdata(pdev, NULL);
 491         kfree(jz_codec);
 492
 493         return 0;
 494 }
 495
 496 static struct platform_driver jz_codec_driver = {
 497         .probe = jz_codec_probe,
 498         .remove = __devexit_p(jz_codec_remove),
 499         .driver = {
 500                 .name = "jz4740-codec",
 501                 .owner = THIS_MODULE,
 502         },
 503 };
 504
 505 static int __init jz_codec_init(void)
 506 {
 507         return platform_driver_register(&jz_codec_driver);
 508 }
 509 module_init(jz_codec_init);
 510
 511 static void __exit jz_codec_exit(void)
 512 {
 513         platform_driver_unregister(&jz_codec_driver);
 514 }
 515 module_exit(jz_codec_exit);
 516
 517 MODULE_DESCRIPTION("JZ4720/JZ4740 SoC internal codec driver");
 518 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 519 MODULE_LICENSE("GPL v2");
 520 MODULE_ALIAS("platform:jz-codec");