kernel/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 #include <linux/io.h>
  19 #include <linux/regmap.h>
  20
  21 #include <linux/delay.h>
  22
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/initval.h>
  27 #include <sound/soc.h>
  28 #include <sound/tlv.h>
  29
  30 #define JZ4740_REG_CODEC_1 0x0
  31 #define JZ4740_REG_CODEC_2 0x4
  32
  33 #define JZ4740_CODEC_1_LINE_ENABLE BIT(29)
  34 #define JZ4740_CODEC_1_MIC_ENABLE BIT(28)
  35 #define JZ4740_CODEC_1_SW1_ENABLE BIT(27)
  36 #define JZ4740_CODEC_1_ADC_ENABLE BIT(26)
  37 #define JZ4740_CODEC_1_SW2_ENABLE BIT(25)
  38 #define JZ4740_CODEC_1_DAC_ENABLE BIT(24)
  39 #define JZ4740_CODEC_1_VREF_DISABLE BIT(20)
  40 #define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19)
  41 #define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18)
  42 #define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17)
  43 #define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16)
  44 #define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14)
  45 #define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
  46 #define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12)
  47 #define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10))
  48 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9)
  49 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8)
  50 #define JZ4740_CODEC_1_SUSPEND BIT(1)
  51 #define JZ4740_CODEC_1_RESET BIT(0)
  52
  53 #define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29
  54 #define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28
  55 #define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27
  56 #define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26
  57 #define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25
  58 #define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24
  59 #define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
  60 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8
  61
  62 #define JZ4740_CODEC_2_INPUT_VOLUME_MASK                0x1f0000
  63 #define JZ4740_CODEC_2_SAMPLE_RATE_MASK                 0x000f00
  64 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK              0x000030
  65 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK    0x000003
  66
  67 #define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET              16
  68 #define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET                8
  69 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET     4
  70 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET   0
  71
  72 static const struct reg_default jz4740_codec_reg_defaults[] = {
  73         { JZ4740_REG_CODEC_1, 0x021b2302 },
  74         { JZ4740_REG_CODEC_2, 0x00170803 },
  75 };
  76
  77 struct jz4740_codec {
  78         struct regmap *regmap;
  79 };
  80
  81 static const unsigned int jz4740_mic_tlv[] = {
  82         TLV_DB_RANGE_HEAD(2),
  83         0, 2, TLV_DB_SCALE_ITEM(0, 600, 0),
  84         3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0),
  85 };
  86
  87 static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0);
  88 static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0);
  89
  90 static const struct snd_kcontrol_new jz4740_codec_controls[] = {
  91         SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2,
  92                         JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0,
  93                         jz4740_out_tlv),
  94         SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2,
  95                         JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0,
  96                         jz4740_in_tlv),
  97         SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1,
  98                         JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
  99         SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2,
 100                         JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0,
 101                         jz4740_mic_tlv),
 102 };
 103
 104 static const struct snd_kcontrol_new jz4740_codec_output_controls[] = {
 105         SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1,
 106                         JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
 107         SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1,
 108                         JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
 109 };
 110
 111 static const struct snd_kcontrol_new jz4740_codec_input_controls[] = {
 112         SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1,
 113                         JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
 114         SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1,
 115                         JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
 116 };
 117
 118 static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = {
 119         SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1,
 120                         JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0),
 121         SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1,
 122                         JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0),
 123
 124         SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1,
 125                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1,
 126                         jz4740_codec_output_controls,
 127                         ARRAY_SIZE(jz4740_codec_output_controls)),
 128
 129         SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
 130                         jz4740_codec_input_controls,
 131                         ARRAY_SIZE(jz4740_codec_input_controls)),
 132         SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 133
 134         SND_SOC_DAPM_OUTPUT("LOUT"),
 135         SND_SOC_DAPM_OUTPUT("ROUT"),
 136
 137         SND_SOC_DAPM_INPUT("MIC"),
 138         SND_SOC_DAPM_INPUT("LIN"),
 139         SND_SOC_DAPM_INPUT("RIN"),
 140 };
 141
 142 static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = {
 143         {"Line Input", NULL, "LIN"},
 144         {"Line Input", NULL, "RIN"},
 145
 146         {"Input Mixer", "Line Capture Switch", "Line Input"},
 147         {"Input Mixer", "Mic Capture Switch", "MIC"},
 148
 149         {"ADC", NULL, "Input Mixer"},
 150
 151         {"Output Mixer", "Bypass Switch", "Input Mixer"},
 152         {"Output Mixer", "DAC Switch", "DAC"},
 153
 154         {"LOUT", NULL, "Output Mixer"},
 155         {"ROUT", NULL, "Output Mixer"},
 156 };
 157
 158 static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
 159         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 160 {
 161         struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(dai->codec);
 162         uint32_t val;
 163
 164         switch (params_rate(params)) {
 165         case 8000:
 166                 val = 0;
 167                 break;
 168         case 11025:
 169                 val = 1;
 170                 break;
 171         case 12000:
 172                 val = 2;
 173                 break;
 174         case 16000:
 175                 val = 3;
 176                 break;
 177         case 22050:
 178                 val = 4;
 179                 break;
 180         case 24000:
 181                 val = 5;
 182                 break;
 183         case 32000:
 184                 val = 6;
 185                 break;
 186         case 44100:
 187                 val = 7;
 188                 break;
 189         case 48000:
 190                 val = 8;
 191                 break;
 192         default:
 193                 return -EINVAL;
 194         }
 195
 196         val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET;
 197
 198         regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_2,
 199                                 JZ4740_CODEC_2_SAMPLE_RATE_MASK, val);
 200
 201         return 0;
 202 }
 203
 204 static const struct snd_soc_dai_ops jz4740_codec_dai_ops = {
 205         .hw_params = jz4740_codec_hw_params,
 206 };
 207
 208 static struct snd_soc_dai_driver jz4740_codec_dai = {
 209         .name = "jz4740-hifi",
 210         .playback = {
 211                 .stream_name = "Playback",
 212                 .channels_min = 2,
 213                 .channels_max = 2,
 214                 .rates = SNDRV_PCM_RATE_8000_48000,
 215                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 216         },
 217         .capture = {
 218                 .stream_name = "Capture",
 219                 .channels_min = 2,
 220                 .channels_max = 2,
 221                 .rates = SNDRV_PCM_RATE_8000_48000,
 222                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 223         },
 224         .ops = &jz4740_codec_dai_ops,
 225         .symmetric_rates = 1,
 226 };
 227
 228 static void jz4740_codec_wakeup(struct regmap *regmap)
 229 {
 230         regmap_update_bits(regmap, JZ4740_REG_CODEC_1,
 231                 JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET);
 232         udelay(2);
 233
 234         regmap_update_bits(regmap, JZ4740_REG_CODEC_1,
 235                 JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0);
 236
 237         regcache_sync(regmap);
 238 }
 239
 240 static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec,
 241         enum snd_soc_bias_level level)
 242 {
 243         struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
 244         struct regmap *regmap = jz4740_codec->regmap;
 245         unsigned int mask;
 246         unsigned int value;
 247
 248         switch (level) {
 249         case SND_SOC_BIAS_ON:
 250                 break;
 251         case SND_SOC_BIAS_PREPARE:
 252                 mask = JZ4740_CODEC_1_VREF_DISABLE |
 253                                 JZ4740_CODEC_1_VREF_AMP_DISABLE |
 254                                 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 255                 value = 0;
 256
 257                 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
 258                 break;
 259         case SND_SOC_BIAS_STANDBY:
 260                 /* The only way to clear the suspend flag is to reset the codec */
 261                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
 262                         jz4740_codec_wakeup(regmap);
 263
 264                 mask = JZ4740_CODEC_1_VREF_DISABLE |
 265                         JZ4740_CODEC_1_VREF_AMP_DISABLE |
 266                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 267                 value = JZ4740_CODEC_1_VREF_DISABLE |
 268                         JZ4740_CODEC_1_VREF_AMP_DISABLE |
 269                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 270
 271                 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
 272                 break;
 273         case SND_SOC_BIAS_OFF:
 274                 mask = JZ4740_CODEC_1_SUSPEND;
 275                 value = JZ4740_CODEC_1_SUSPEND;
 276
 277                 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
 278                 regcache_mark_dirty(regmap);
 279                 break;
 280         default:
 281                 break;
 282         }
 283
 284         codec->dapm.bias_level = level;
 285
 286         return 0;
 287 }
 288
 289 static int jz4740_codec_dev_probe(struct snd_soc_codec *codec)
 290 {
 291         struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
 292
 293         regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_1,
 294                         JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
 295
 296         return 0;
 297 }
 298
 299 static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
 300         .probe = jz4740_codec_dev_probe,
 301         .set_bias_level = jz4740_codec_set_bias_level,
 302         .suspend_bias_off = true,
 303
 304         .controls = jz4740_codec_controls,
 305         .num_controls = ARRAY_SIZE(jz4740_codec_controls),
 306         .dapm_widgets = jz4740_codec_dapm_widgets,
 307         .num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets),
 308         .dapm_routes = jz4740_codec_dapm_routes,
 309         .num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes),
 310 };
 311
 312 static const struct regmap_config jz4740_codec_regmap_config = {
 313         .reg_bits = 32,
 314         .reg_stride = 4,
 315         .val_bits = 32,
 316         .max_register = JZ4740_REG_CODEC_2,
 317
 318         .reg_defaults = jz4740_codec_reg_defaults,
 319         .num_reg_defaults = ARRAY_SIZE(jz4740_codec_reg_defaults),
 320         .cache_type = REGCACHE_RBTREE,
 321 };
 322
 323 static int jz4740_codec_probe(struct platform_device *pdev)
 324 {
 325         int ret;
 326         struct jz4740_codec *jz4740_codec;
 327         struct resource *mem;
 328         void __iomem *base;
 329
 330         jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec),
 331                                     GFP_KERNEL);
 332         if (!jz4740_codec)
 333                 return -ENOMEM;
 334
 335         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 336         base = devm_ioremap_resource(&pdev->dev, mem);
 337         if (IS_ERR(base))
 338                 return PTR_ERR(base);
 339
 340         jz4740_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
 341                                             &jz4740_codec_regmap_config);
 342         if (IS_ERR(jz4740_codec->regmap))
 343                 return PTR_ERR(jz4740_codec->regmap);
 344
 345         platform_set_drvdata(pdev, jz4740_codec);
 346
 347         ret = snd_soc_register_codec(&pdev->dev,
 348                         &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
 349         if (ret)
 350                 dev_err(&pdev->dev, "Failed to register codec\n");
 351
 352         return ret;
 353 }
 354
 355 static int jz4740_codec_remove(struct platform_device *pdev)
 356 {
 357         snd_soc_unregister_codec(&pdev->dev);
 358
 359         return 0;
 360 }
 361
 362 static struct platform_driver jz4740_codec_driver = {
 363         .probe = jz4740_codec_probe,
 364         .remove = jz4740_codec_remove,
 365         .driver = {
 366                 .name = "jz4740-codec",
 367         },
 368 };
 369
 370 module_platform_driver(jz4740_codec_driver);
 371
 372 MODULE_DESCRIPTION("JZ4740 SoC internal codec driver");
 373 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 374 MODULE_LICENSE("GPL v2");
 375 MODULE_ALIAS("platform:jz4740-codec");