sound/soc/codecs/jz4740.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // JZ4740 CODEC driver
   4 //
   5 // Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
   6
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/slab.h>
  11 #include <linux/io.h>
  12 #include <linux/regmap.h>
  13
  14 #include <linux/delay.h>
  15
  16 #include <sound/core.h>
  17 #include <sound/pcm.h>
  18 #include <sound/pcm_params.h>
  19 #include <sound/initval.h>
  20 #include <sound/soc.h>
  21 #include <sound/tlv.h>
  22
  23 #define JZ4740_REG_CODEC_1 0x0
  24 #define JZ4740_REG_CODEC_2 0x4
  25
  26 #define JZ4740_CODEC_1_LINE_ENABLE BIT(29)
  27 #define JZ4740_CODEC_1_MIC_ENABLE BIT(28)
  28 #define JZ4740_CODEC_1_SW1_ENABLE BIT(27)
  29 #define JZ4740_CODEC_1_ADC_ENABLE BIT(26)
  30 #define JZ4740_CODEC_1_SW2_ENABLE BIT(25)
  31 #define JZ4740_CODEC_1_DAC_ENABLE BIT(24)
  32 #define JZ4740_CODEC_1_VREF_DISABLE BIT(20)
  33 #define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19)
  34 #define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18)
  35 #define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17)
  36 #define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16)
  37 #define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14)
  38 #define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
  39 #define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12)
  40 #define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10))
  41 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9)
  42 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8)
  43 #define JZ4740_CODEC_1_SUSPEND BIT(1)
  44 #define JZ4740_CODEC_1_RESET BIT(0)
  45
  46 #define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29
  47 #define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28
  48 #define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27
  49 #define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26
  50 #define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25
  51 #define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24
  52 #define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
  53 #define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8
  54
  55 #define JZ4740_CODEC_2_INPUT_VOLUME_MASK                0x1f0000
  56 #define JZ4740_CODEC_2_SAMPLE_RATE_MASK                 0x000f00
  57 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK              0x000030
  58 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK    0x000003
  59
  60 #define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET              16
  61 #define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET                8
  62 #define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET     4
  63 #define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET   0
  64
  65 static const struct reg_default jz4740_codec_reg_defaults[] = {
  66         { JZ4740_REG_CODEC_1, 0x021b2302 },
  67         { JZ4740_REG_CODEC_2, 0x00170803 },
  68 };
  69
  70 struct jz4740_codec {
  71         struct regmap *regmap;
  72 };
  73
  74 static const DECLARE_TLV_DB_RANGE(jz4740_mic_tlv,
  75         0, 2, TLV_DB_SCALE_ITEM(0, 600, 0),
  76         3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0)
  77 );
  78
  79 static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0);
  80 static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0);
  81
  82 static const struct snd_kcontrol_new jz4740_codec_controls[] = {
  83         SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2,
  84                         JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0,
  85                         jz4740_out_tlv),
  86         SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2,
  87                         JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0,
  88                         jz4740_in_tlv),
  89         SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1,
  90                         JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
  91         SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2,
  92                         JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0,
  93                         jz4740_mic_tlv),
  94 };
  95
  96 static const struct snd_kcontrol_new jz4740_codec_output_controls[] = {
  97         SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1,
  98                         JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
  99         SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1,
 100                         JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
 101 };
 102
 103 static const struct snd_kcontrol_new jz4740_codec_input_controls[] = {
 104         SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1,
 105                         JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
 106         SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1,
 107                         JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
 108 };
 109
 110 static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = {
 111         SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1,
 112                         JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0),
 113         SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1,
 114                         JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0),
 115
 116         SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1,
 117                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1,
 118                         jz4740_codec_output_controls,
 119                         ARRAY_SIZE(jz4740_codec_output_controls)),
 120
 121         SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
 122                         jz4740_codec_input_controls,
 123                         ARRAY_SIZE(jz4740_codec_input_controls)),
 124         SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
 125
 126         SND_SOC_DAPM_OUTPUT("LOUT"),
 127         SND_SOC_DAPM_OUTPUT("ROUT"),
 128
 129         SND_SOC_DAPM_INPUT("MIC"),
 130         SND_SOC_DAPM_INPUT("LIN"),
 131         SND_SOC_DAPM_INPUT("RIN"),
 132 };
 133
 134 static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = {
 135         {"Line Input", NULL, "LIN"},
 136         {"Line Input", NULL, "RIN"},
 137
 138         {"Input Mixer", "Line Capture Switch", "Line Input"},
 139         {"Input Mixer", "Mic Capture Switch", "MIC"},
 140
 141         {"ADC", NULL, "Input Mixer"},
 142
 143         {"Output Mixer", "Bypass Switch", "Input Mixer"},
 144         {"Output Mixer", "DAC Switch", "DAC"},
 145
 146         {"LOUT", NULL, "Output Mixer"},
 147         {"ROUT", NULL, "Output Mixer"},
 148 };
 149
 150 static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
 151         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 152 {
 153         struct jz4740_codec *jz4740_codec = snd_soc_component_get_drvdata(dai->component);
 154         uint32_t val;
 155
 156         switch (params_rate(params)) {
 157         case 8000:
 158                 val = 0;
 159                 break;
 160         case 11025:
 161                 val = 1;
 162                 break;
 163         case 12000:
 164                 val = 2;
 165                 break;
 166         case 16000:
 167                 val = 3;
 168                 break;
 169         case 22050:
 170                 val = 4;
 171                 break;
 172         case 24000:
 173                 val = 5;
 174                 break;
 175         case 32000:
 176                 val = 6;
 177                 break;
 178         case 44100:
 179                 val = 7;
 180                 break;
 181         case 48000:
 182                 val = 8;
 183                 break;
 184         default:
 185                 return -EINVAL;
 186         }
 187
 188         val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET;
 189
 190         regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_2,
 191                                 JZ4740_CODEC_2_SAMPLE_RATE_MASK, val);
 192
 193         return 0;
 194 }
 195
 196 static const struct snd_soc_dai_ops jz4740_codec_dai_ops = {
 197         .hw_params = jz4740_codec_hw_params,
 198 };
 199
 200 static struct snd_soc_dai_driver jz4740_codec_dai = {
 201         .name = "jz4740-hifi",
 202         .playback = {
 203                 .stream_name = "Playback",
 204                 .channels_min = 2,
 205                 .channels_max = 2,
 206                 .rates = SNDRV_PCM_RATE_8000_48000,
 207                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 208         },
 209         .capture = {
 210                 .stream_name = "Capture",
 211                 .channels_min = 2,
 212                 .channels_max = 2,
 213                 .rates = SNDRV_PCM_RATE_8000_48000,
 214                 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
 215         },
 216         .ops = &jz4740_codec_dai_ops,
 217         .symmetric_rates = 1,
 218 };
 219
 220 static void jz4740_codec_wakeup(struct regmap *regmap)
 221 {
 222         regmap_update_bits(regmap, JZ4740_REG_CODEC_1,
 223                 JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET);
 224         udelay(2);
 225
 226         regmap_update_bits(regmap, JZ4740_REG_CODEC_1,
 227                 JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0);
 228
 229         regcache_sync(regmap);
 230 }
 231
 232 static int jz4740_codec_set_bias_level(struct snd_soc_component *component,
 233         enum snd_soc_bias_level level)
 234 {
 235         struct jz4740_codec *jz4740_codec = snd_soc_component_get_drvdata(component);
 236         struct regmap *regmap = jz4740_codec->regmap;
 237         unsigned int mask;
 238         unsigned int value;
 239
 240         switch (level) {
 241         case SND_SOC_BIAS_ON:
 242                 break;
 243         case SND_SOC_BIAS_PREPARE:
 244                 mask = JZ4740_CODEC_1_VREF_DISABLE |
 245                                 JZ4740_CODEC_1_VREF_AMP_DISABLE |
 246                                 JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 247                 value = 0;
 248
 249                 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
 250                 break;
 251         case SND_SOC_BIAS_STANDBY:
 252                 /* The only way to clear the suspend flag is to reset the codec */
 253                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
 254                         jz4740_codec_wakeup(regmap);
 255
 256                 mask = JZ4740_CODEC_1_VREF_DISABLE |
 257                         JZ4740_CODEC_1_VREF_AMP_DISABLE |
 258                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 259                 value = JZ4740_CODEC_1_VREF_DISABLE |
 260                         JZ4740_CODEC_1_VREF_AMP_DISABLE |
 261                         JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
 262
 263                 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
 264                 break;
 265         case SND_SOC_BIAS_OFF:
 266                 mask = JZ4740_CODEC_1_SUSPEND;
 267                 value = JZ4740_CODEC_1_SUSPEND;
 268
 269                 regmap_update_bits(regmap, JZ4740_REG_CODEC_1, mask, value);
 270                 regcache_mark_dirty(regmap);
 271                 break;
 272         default:
 273                 break;
 274         }
 275
 276         return 0;
 277 }
 278
 279 static int jz4740_codec_dev_probe(struct snd_soc_component *component)
 280 {
 281         struct jz4740_codec *jz4740_codec = snd_soc_component_get_drvdata(component);
 282
 283         regmap_update_bits(jz4740_codec->regmap, JZ4740_REG_CODEC_1,
 284                         JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
 285
 286         return 0;
 287 }
 288
 289 static const struct snd_soc_component_driver soc_codec_dev_jz4740_codec = {
 290         .probe                  = jz4740_codec_dev_probe,
 291         .set_bias_level         = jz4740_codec_set_bias_level,
 292         .controls               = jz4740_codec_controls,
 293         .num_controls           = ARRAY_SIZE(jz4740_codec_controls),
 294         .dapm_widgets           = jz4740_codec_dapm_widgets,
 295         .num_dapm_widgets       = ARRAY_SIZE(jz4740_codec_dapm_widgets),
 296         .dapm_routes            = jz4740_codec_dapm_routes,
 297         .num_dapm_routes        = ARRAY_SIZE(jz4740_codec_dapm_routes),
 298         .suspend_bias_off       = 1,
 299         .idle_bias_on           = 1,
 300         .use_pmdown_time        = 1,
 301         .endianness             = 1,
 302         .non_legacy_dai_naming  = 1,
 303
 304 };
 305
 306 static const struct regmap_config jz4740_codec_regmap_config = {
 307         .reg_bits = 32,
 308         .reg_stride = 4,
 309         .val_bits = 32,
 310         .max_register = JZ4740_REG_CODEC_2,
 311
 312         .reg_defaults = jz4740_codec_reg_defaults,
 313         .num_reg_defaults = ARRAY_SIZE(jz4740_codec_reg_defaults),
 314         .cache_type = REGCACHE_RBTREE,
 315 };
 316
 317 static int jz4740_codec_probe(struct platform_device *pdev)
 318 {
 319         int ret;
 320         struct jz4740_codec *jz4740_codec;
 321         void __iomem *base;
 322
 323         jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec),
 324                                     GFP_KERNEL);
 325         if (!jz4740_codec)
 326                 return -ENOMEM;
 327
 328         base = devm_platform_ioremap_resource(pdev, 0);
 329         if (IS_ERR(base))
 330                 return PTR_ERR(base);
 331
 332         jz4740_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
 333                                             &jz4740_codec_regmap_config);
 334         if (IS_ERR(jz4740_codec->regmap))
 335                 return PTR_ERR(jz4740_codec->regmap);
 336
 337         platform_set_drvdata(pdev, jz4740_codec);
 338
 339         ret = devm_snd_soc_register_component(&pdev->dev,
 340                         &soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
 341         if (ret)
 342                 dev_err(&pdev->dev, "Failed to register codec\n");
 343
 344         return ret;
 345 }
 346
 347 #ifdef CONFIG_OF
 348 static const struct of_device_id jz4740_codec_of_matches[] = {
 349         { .compatible = "ingenic,jz4740-codec", },
 350         { }
 351 };
 352 MODULE_DEVICE_TABLE(of, jz4740_codec_of_matches);
 353 #endif
 354
 355 static struct platform_driver jz4740_codec_driver = {
 356         .probe = jz4740_codec_probe,
 357         .driver = {
 358                 .name = "jz4740-codec",
 359                 .of_match_table = of_match_ptr(jz4740_codec_of_matches),
 360         },
 361 };
 362
 363 module_platform_driver(jz4740_codec_driver);
 364
 365 MODULE_DESCRIPTION("JZ4740 SoC internal codec driver");
 366 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 367 MODULE_LICENSE("GPL v2");
 368 MODULE_ALIAS("platform:jz4740-codec");