sound/soc/codecs/jz4740.c

   1 /*
   2  * Copyright (C) 2009-2010, 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/slab.h>
  18
  19 #include <linux/delay.h>
  20
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/pcm_params.h>
  24 #include <sound/initval.h>
  25 #include <sound/soc-dapm.h>
  26 #include <sound/soc.h>
  27
  28 #define JZ4740_REG_CODEC_1 0x0
  29 #define JZ4740_REG_CODEC_2 0x1
  30
  31 #define JZ4740_CODEC_1_LINE_ENABLE BIT(29)
  32 #define JZ4740_CODEC_1_MIC_ENABLE BIT(28)
  33 #define JZ4740_CODEC_1_SW1_ENABLE BIT(27)
  34 #define JZ4740_CODEC_1_ADC_ENABLE BIT(26)
  35 #define JZ4740_CODEC_1_SW2_ENABLE BIT(25)
  36 #define JZ4740_CODEC_1_DAC_ENABLE BIT(24)
  37 #define JZ4740_CODEC_1_VREF_DISABLE BIT(20)
  38 #define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19)
  39 #define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18)
  40 #define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17)
  41 #define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16)
  42 #define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14)
  43 #define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
  44 #define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12)
  45 #define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10))
  46 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9)
  47 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8)
  48 #define JZ4740_CODEC_1_SUSPEND BIT(1)
  49 #define JZ4740_CODEC_1_RESET BIT(0)
  50
  51 #define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29
  52 #define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28
  53 #define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27
  54 #define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26
  55 #define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25
  56 #define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24
  57 #define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
  58 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8
  59
  60 #define JZ4740_CODEC_2_INPUT_VOLUME_MASK                0x1f0000
  61 #define JZ4740_CODEC_2_SAMPLE_RATE_MASK                 0x000f00
  62 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK              0x000030
  63 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK    0x000003
  64
  65 #define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET              16
  66 #define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET                8
  67 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET     4
  68 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET   0
  69
  70 static const uint32_t jz4740_codec_regs[] = {
  71         0x021b2302, 0x00170803,
  72 };
  73
  74 struct jz4740_codec {
  75         void __iomem *base;
  76         struct resource *mem;
  77 };
  78
  79 static unsigned int jz4740_codec_read(struct snd_soc_codec *codec,
  80         unsigned int reg)
  81 {
  82         struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
  83         return readl(jz4740_codec->base + (reg << 2));
  84 }
  85
  86 static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg,
  87         unsigned int val)
  88 {
  89         struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
  90         u32 *cache = codec->reg_cache;
  91
  92         cache[reg] = val;
  93         writel(val, jz4740_codec->base + (reg << 2));
  94
  95         return 0;
  96 }
  97
  98 static const struct snd_kcontrol_new jz4740_codec_controls[] = {
  99         SOC_SINGLE("Master Playback Volume", JZ4740_REG_CODEC_2,
 100                         JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0),
 101         SOC_SINGLE("Master Capture Volume", JZ4740_REG_CODEC_2,
 102                         JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0),
 103         SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1,
 104                         JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
 105         SOC_SINGLE("Mic Capture Volume", JZ4740_REG_CODEC_2,
 106                         JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0),
 107 };
 108
 109 static const struct snd_kcontrol_new jz4740_codec_output_controls[] = {
 110         SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1,
 111                         JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
 112         SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1,
 113                         JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
 114 };
 115
 116 static const struct snd_kcontrol_new jz4740_codec_input_controls[] = {
 117         SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1,
 118                         JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
 119         SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1,
 120                         JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
 121 };
 122
 123 static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = {
 124         SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1,
 125                         JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0),
 126         SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1,
 127                         JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0),
 128
 129         SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1,
 130                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1,
 131                         jz4740_codec_output_controls,
 132                         ARRAY_SIZE(jz4740_codec_output_controls)),
 133
 134         SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
 135                         jz4740_codec_input_controls,
 136                         ARRAY_SIZE(jz4740_codec_input_controls)),
 137         SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 138
 139         SND_SOC_DAPM_OUTPUT("LOUT"),
 140         SND_SOC_DAPM_OUTPUT("ROUT"),
 141
 142         SND_SOC_DAPM_INPUT("MIC"),
 143         SND_SOC_DAPM_INPUT("LIN"),
 144         SND_SOC_DAPM_INPUT("RIN"),
 145 };
 146
 147 static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = {
 148         {"Line Input", NULL, "LIN"},
 149         {"Line Input", NULL, "RIN"},
 150
 151         {"Input Mixer", "Line Capture Switch", "Line Input"},
 152         {"Input Mixer", "Mic Capture Switch", "MIC"},
 153
 154         {"ADC", NULL, "Input Mixer"},
 155
 156         {"Output Mixer", "Bypass Switch", "Input Mixer"},
 157         {"Output Mixer", "DAC Switch", "DAC"},
 158
 159         {"LOUT", NULL, "Output Mixer"},
 160         {"ROUT", NULL, "Output Mixer"},
 161 };
 162
 163 static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
 164         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 165 {
 166         uint32_t val;
 167         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 168         struct snd_soc_codec *codec =rtd->codec;
 169
 170         switch (params_rate(params)) {
 171         case 8000:
 172                 val = 0;
 173                 break;
 174         case 11025:
 175                 val = 1;
 176                 break;
 177         case 12000:
 178                 val = 2;
 179                 break;
 180         case 16000:
 181                 val = 3;
 182                 break;
 183         case 22050:
 184                 val = 4;
 185                 break;
 186         case 24000:
 187                 val = 5;
 188                 break;
 189         case 32000:
 190                 val = 6;
 191                 break;
 192         case 44100:
 193                 val = 7;
 194                 break;
 195         case 48000:
 196                 val = 8;
 197                 break;
 198         default:
 199                 return -EINVAL;
 200         }
 201
 202         val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET;
 203
 204         snd_soc_update_bits(codec, JZ4740_REG_CODEC_2,
 205                                 JZ4740_CODEC_2_SAMPLE_RATE_MASK, val);
 206
 207         return 0;
 208 }
 209
 210 static struct snd_soc_dai_ops jz4740_codec_dai_ops = {
 211         .hw_params = jz4740_codec_hw_params,
 212 };
 213
 214 static struct snd_soc_dai_driver jz4740_codec_dai = {
 215         .name = "jz4740-hifi",
 216         .playback = {
 217                 .stream_name = "Playback",
 218                 .channels_min = 2,
 219                 .channels_max = 2,
 220                 .rates = SNDRV_PCM_RATE_8000_48000,
 221                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 222         },
 223         .capture = {
 224                 .stream_name = "Capture",
 225                 .channels_min = 2,
 226                 .channels_max = 2,
 227                 .rates = SNDRV_PCM_RATE_8000_48000,
 228                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 229         },
 230         .ops = &jz4740_codec_dai_ops,
 231         .symmetric_rates = 1,
 232 };
 233
 234 static void jz4740_codec_wakeup(struct snd_soc_codec *codec)
 235 {
 236         int i;
 237         uint32_t *cache = codec->reg_cache;
 238
 239         snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
 240                 JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET);
 241         udelay(2);
 242
 243         snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
 244                 JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0);
 245
 246         for (i = 0; i < ARRAY_SIZE(jz4740_codec_regs); ++i)
 247                 jz4740_codec_write(codec, i, cache[i]);
 248 }
 249
 250 static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec,
 251         enum snd_soc_bias_level level)
 252 {
 253         unsigned int mask;
 254         unsigned int value;
 255
 256         switch (level) {
 257         case SND_SOC_BIAS_ON:
 258                 break;
 259         case SND_SOC_BIAS_PREPARE:
 260                 mask = JZ4740_CODEC_1_VREF_DISABLE |
 261                                 JZ4740_CODEC_1_VREF_AMP_DISABLE |
 262                                 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 263                 value = 0;
 264
 265                 snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
 266                 break;
 267         case SND_SOC_BIAS_STANDBY:
 268                 /* The only way to clear the suspend flag is to reset the codec */
 269                 if (codec->bias_level == SND_SOC_BIAS_OFF)
 270                         jz4740_codec_wakeup(codec);
 271
 272                 mask = JZ4740_CODEC_1_VREF_DISABLE |
 273                         JZ4740_CODEC_1_VREF_AMP_DISABLE |
 274                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 275                 value = JZ4740_CODEC_1_VREF_DISABLE |
 276                         JZ4740_CODEC_1_VREF_AMP_DISABLE |
 277                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 278
 279                 snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
 280                 break;
 281         case SND_SOC_BIAS_OFF:
 282                 mask = JZ4740_CODEC_1_SUSPEND;
 283                 value = JZ4740_CODEC_1_SUSPEND;
 284
 285                 snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
 286                 break;
 287         default:
 288                 break;
 289         }
 290
 291         codec->bias_level = level;
 292
 293         return 0;
 294 }
 295
 296 static int jz4740_codec_dev_probe(struct snd_soc_codec *codec)
 297 {
 298         snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
 299                         JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
 300
 301         snd_soc_add_controls(codec, jz4740_codec_controls,
 302                 ARRAY_SIZE(jz4740_codec_controls));
 303
 304         snd_soc_dapm_new_controls(codec, jz4740_codec_dapm_widgets,
 305                 ARRAY_SIZE(jz4740_codec_dapm_widgets));
 306
 307         snd_soc_dapm_add_routes(codec, jz4740_codec_dapm_routes,
 308                 ARRAY_SIZE(jz4740_codec_dapm_routes));
 309
 310         snd_soc_dapm_new_widgets(codec);
 311
 312         jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 313
 314         return 0;
 315 }
 316
 317 static int jz4740_codec_dev_remove(struct snd_soc_codec *codec)
 318 {
 319         jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
 320
 321         return 0;
 322 }
 323
 324 #ifdef CONFIG_PM_SLEEP
 325
 326 static int jz4740_codec_suspend(struct snd_soc_codec *codec, pm_message_t state)
 327 {
 328         return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
 329 }
 330
 331 static int jz4740_codec_resume(struct snd_soc_codec *codec)
 332 {
 333         return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 334 }
 335
 336 #else
 337 #define jz4740_codec_suspend NULL
 338 #define jz4740_codec_resume NULL
 339 #endif
 340
 341 static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
 342         .probe = jz4740_codec_dev_probe,
 343         .remove = jz4740_codec_dev_remove,
 344         .suspend = jz4740_codec_suspend,
 345         .resume = jz4740_codec_resume,
 346         .read = jz4740_codec_read,
 347         .write = jz4740_codec_write,
 348         .set_bias_level = jz4740_codec_set_bias_level,
 349         .reg_cache_default      = jz4740_codec_regs,
 350         .reg_word_size = sizeof(u32),
 351         .reg_cache_size = 2,
 352 };
 353
 354 static int __devinit jz4740_codec_probe(struct platform_device *pdev)
 355 {
 356         int ret;
 357         struct jz4740_codec *jz4740_codec;
 358         struct resource *mem;
 359
 360         jz4740_codec = kzalloc(sizeof(*jz4740_codec), GFP_KERNEL);
 361         if (!jz4740_codec)
 362                 return -ENOMEM;
 363
 364         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 365         if (!mem) {
 366                 dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
 367                 ret = -ENOENT;
 368                 goto err_free_codec;
 369         }
 370
 371         mem = request_mem_region(mem->start, resource_size(mem), pdev->name);
 372         if (!mem) {
 373                 dev_err(&pdev->dev, "Failed to request mmio memory region\n");
 374                 ret = -EBUSY;
 375                 goto err_free_codec;
 376         }
 377
 378         jz4740_codec->base = ioremap(mem->start, resource_size(mem));
 379         if (!jz4740_codec->base) {
 380                 dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
 381                 ret = -EBUSY;
 382                 goto err_release_mem_region;
 383         }
 384         jz4740_codec->mem = mem;
 385
 386         platform_set_drvdata(pdev, jz4740_codec);
 387
 388         ret = snd_soc_register_codec(&pdev->dev,
 389                         &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
 390         if (ret) {
 391                 dev_err(&pdev->dev, "Failed to register codec\n");
 392                 goto err_iounmap;
 393         }
 394
 395         return 0;
 396
 397 err_iounmap:
 398         iounmap(jz4740_codec->base);
 399 err_release_mem_region:
 400         release_mem_region(mem->start, resource_size(mem));
 401 err_free_codec:
 402         kfree(jz4740_codec);
 403
 404         return ret;
 405 }
 406
 407 static int __devexit jz4740_codec_remove(struct platform_device *pdev)
 408 {
 409         struct jz4740_codec *jz4740_codec = platform_get_drvdata(pdev);
 410         struct resource *mem = jz4740_codec->mem;
 411
 412         snd_soc_unregister_codec(&pdev->dev);
 413
 414         iounmap(jz4740_codec->base);
 415         release_mem_region(mem->start, resource_size(mem));
 416
 417         platform_set_drvdata(pdev, NULL);
 418         kfree(jz4740_codec);
 419
 420         return 0;
 421 }
 422
 423 static struct platform_driver jz4740_codec_driver = {
 424         .probe = jz4740_codec_probe,
 425         .remove = __devexit_p(jz4740_codec_remove),
 426         .driver = {
 427                 .name = "jz4740-codec",
 428                 .owner = THIS_MODULE,
 429         },
 430 };
 431
 432 static int __init jz4740_codec_init(void)
 433 {
 434         return platform_driver_register(&jz4740_codec_driver);
 435 }
 436 module_init(jz4740_codec_init);
 437
 438 static void __exit jz4740_codec_exit(void)
 439 {
 440         platform_driver_unregister(&jz4740_codec_driver);
 441 }
 442 module_exit(jz4740_codec_exit);
 443
 444 MODULE_DESCRIPTION("JZ4740 SoC internal codec driver");
 445 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 446 MODULE_LICENSE("GPL v2");
 447 MODULE_ALIAS("platform:jz4740-codec");