soc/codecs/ak4535.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * ak4535.c  --  AK4535 ALSA Soc Audio driver
0004  *
0005  * Copyright 2005 Openedhand Ltd.
0006  *
0007  * Author: Richard Purdie <richard@openedhand.com>
0008  *
0009  * Based on wm8753.c by Liam Girdwood
0010  */
0011
0012 #include <linux/module.h>
0013 #include <linux/moduleparam.h>
0014 #include <linux/init.h>
0015 #include <linux/delay.h>
0016 #include <linux/pm.h>
0017 #include <linux/i2c.h>
0018 #include <linux/regmap.h>
0019 #include <linux/slab.h>
0020 #include <sound/core.h>
0021 #include <sound/pcm.h>
0022 #include <sound/pcm_params.h>
0023 #include <sound/soc.h>
0024 #include <sound/initval.h>
0025
0026 #include "ak4535.h"
0027
0028 /* codec private data */
0029 struct ak4535_priv {
0030     struct regmap *regmap;
0031     unsigned int sysclk;
0032 };
0033
0034 /*
0035  * ak4535 register cache
0036  */
0037 static const struct reg_default ak4535_reg_defaults[] = {
0038     { 0, 0x00 },
0039     { 1, 0x80 },
0040     { 2, 0x00 },
0041     { 3, 0x03 },
0042     { 4, 0x02 },
0043     { 5, 0x00 },
0044     { 6, 0x11 },
0045     { 7, 0x01 },
0046     { 8, 0x00 },
0047     { 9, 0x40 },
0048     { 10, 0x36 },
0049     { 11, 0x10 },
0050     { 12, 0x00 },
0051     { 13, 0x00 },
0052     { 14, 0x57 },
0053 };
0054
0055 static bool ak4535_volatile(struct device *dev, unsigned int reg)
0056 {
0057     switch (reg) {
0058     case AK4535_STATUS:
0059         return true;
0060     default:
0061         return false;
0062     }
0063 }
0064
0065 static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
0066 static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
0067 static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
0068 static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
0069 static const char *ak4535_mic_select[] = {"Internal", "External"};
0070
0071 static const struct soc_enum ak4535_enum[] = {
0072     SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
0073     SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
0074     SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
0075     SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
0076     SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
0077 };
0078
0079 static const struct snd_kcontrol_new ak4535_snd_controls[] = {
0080     SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
0081     SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
0082     SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
0083     SOC_ENUM("Headphone Output", ak4535_enum[2]),
0084     SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
0085     SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
0086     SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
0087     SOC_ENUM("Mic Select", ak4535_enum[4]),
0088     SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
0089     SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
0090     SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
0091     SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
0092     SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
0093     SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
0094     SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
0095     SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
0096     SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
0097     SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
0098     SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
0099 };
0100
0101 /* Mono 1 Mixer */
0102 static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
0103     SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
0104     SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
0105 };
0106
0107 /* Stereo Mixer */
0108 static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
0109     SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
0110     SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
0111     SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
0112 };
0113
0114 /* Input Mixer */
0115 static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
0116     SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
0117     SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
0118 };
0119
0120 /* Input mux */
0121 static const struct snd_kcontrol_new ak4535_input_mux_control =
0122     SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
0123
0124 /* HP L switch */
0125 static const struct snd_kcontrol_new ak4535_hpl_control =
0126     SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
0127
0128 /* HP R switch */
0129 static const struct snd_kcontrol_new ak4535_hpr_control =
0130     SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
0131
0132 /* mono 2 switch */
0133 static const struct snd_kcontrol_new ak4535_mono2_control =
0134     SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
0135
0136 /* Line out switch */
0137 static const struct snd_kcontrol_new ak4535_line_control =
0138     SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
0139
0140 /* ak4535 dapm widgets */
0141 static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
0142     SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
0143         &ak4535_stereo_mixer_controls[0],
0144         ARRAY_SIZE(ak4535_stereo_mixer_controls)),
0145     SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
0146         &ak4535_mono1_mixer_controls[0],
0147         ARRAY_SIZE(ak4535_mono1_mixer_controls)),
0148     SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
0149         &ak4535_input_mixer_controls[0],
0150         ARRAY_SIZE(ak4535_input_mixer_controls)),
0151     SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
0152         &ak4535_input_mux_control),
0153     SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
0154     SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
0155         &ak4535_mono2_control),
0156     /* speaker powersave bit */
0157     SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
0158     SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
0159         &ak4535_line_control),
0160     SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
0161         &ak4535_hpl_control),
0162     SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
0163         &ak4535_hpr_control),
0164     SND_SOC_DAPM_OUTPUT("LOUT"),
0165     SND_SOC_DAPM_OUTPUT("HPL"),
0166     SND_SOC_DAPM_OUTPUT("ROUT"),
0167     SND_SOC_DAPM_OUTPUT("HPR"),
0168     SND_SOC_DAPM_OUTPUT("SPP"),
0169     SND_SOC_DAPM_OUTPUT("SPN"),
0170     SND_SOC_DAPM_OUTPUT("MOUT1"),
0171     SND_SOC_DAPM_OUTPUT("MOUT2"),
0172     SND_SOC_DAPM_OUTPUT("MICOUT"),
0173     SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
0174     SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
0175     SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
0176     SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
0177     SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
0178     SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
0179     SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
0180     SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
0181
0182     SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
0183     SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
0184     SND_SOC_DAPM_INPUT("MICIN"),
0185     SND_SOC_DAPM_INPUT("MICEXT"),
0186     SND_SOC_DAPM_INPUT("AUX"),
0187     SND_SOC_DAPM_INPUT("MIN"),
0188     SND_SOC_DAPM_INPUT("AIN"),
0189 };
0190
0191 static const struct snd_soc_dapm_route ak4535_audio_map[] = {
0192     /*stereo mixer */
0193     {"Stereo Mixer", "Playback Switch", "DAC"},
0194     {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
0195     {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
0196
0197     /* mono1 mixer */
0198     {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
0199     {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
0200
0201     /* Mic */
0202     {"Mic", NULL, "AIN"},
0203     {"Input Mux", "Internal", "Mic Int Bias"},
0204     {"Input Mux", "External", "Mic Ext Bias"},
0205     {"Mic Int Bias", NULL, "MICIN"},
0206     {"Mic Ext Bias", NULL, "MICEXT"},
0207     {"MICOUT", NULL, "Input Mux"},
0208
0209     /* line out */
0210     {"LOUT", NULL, "Line Out Enable"},
0211     {"ROUT", NULL, "Line Out Enable"},
0212     {"Line Out Enable", "Switch", "Line Out"},
0213     {"Line Out", NULL, "Stereo Mixer"},
0214
0215     /* mono1 out */
0216     {"MOUT1", NULL, "Mono Out"},
0217     {"Mono Out", NULL, "Mono1 Mixer"},
0218
0219     /* left HP */
0220     {"HPL", NULL, "Left HP Enable"},
0221     {"Left HP Enable", "Switch", "HP L Amp"},
0222     {"HP L Amp", NULL, "Stereo Mixer"},
0223
0224     /* right HP */
0225     {"HPR", NULL, "Right HP Enable"},
0226     {"Right HP Enable", "Switch", "HP R Amp"},
0227     {"HP R Amp", NULL, "Stereo Mixer"},
0228
0229     /* speaker */
0230     {"SPP", NULL, "Speaker Enable"},
0231     {"SPN", NULL, "Speaker Enable"},
0232     {"Speaker Enable", "Switch", "Spk Amp"},
0233     {"Spk Amp", NULL, "MIN"},
0234
0235     /* mono 2 */
0236     {"MOUT2", NULL, "Mono 2 Enable"},
0237     {"Mono 2 Enable", "Switch", "Stereo Mixer"},
0238
0239     /* Aux In */
0240     {"Aux In", NULL, "AUX"},
0241
0242     /* ADC */
0243     {"ADC", NULL, "Input Mixer"},
0244     {"Input Mixer", "Mic Capture Switch", "Mic"},
0245     {"Input Mixer", "Aux Capture Switch", "Aux In"},
0246 };
0247
0248 static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
0249     int clk_id, unsigned int freq, int dir)
0250 {
0251     struct snd_soc_component *component = codec_dai->component;
0252     struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
0253
0254     ak4535->sysclk = freq;
0255     return 0;
0256 }
0257
0258 static int ak4535_hw_params(struct snd_pcm_substream *substream,
0259                 struct snd_pcm_hw_params *params,
0260                 struct snd_soc_dai *dai)
0261 {
0262     struct snd_soc_component *component = dai->component;
0263     struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
0264     u8 mode2 = snd_soc_component_read(component, AK4535_MODE2) & ~(0x3 << 5);
0265     int rate = params_rate(params), fs = 256;
0266
0267     if (rate)
0268         fs = ak4535->sysclk / rate;
0269
0270     /* set fs */
0271     switch (fs) {
0272     case 1024:
0273         mode2 |= (0x2 << 5);
0274         break;
0275     case 512:
0276         mode2 |= (0x1 << 5);
0277         break;
0278     case 256:
0279         break;
0280     }
0281
0282     /* set rate */
0283     snd_soc_component_write(component, AK4535_MODE2, mode2);
0284     return 0;
0285 }
0286
0287 static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
0288         unsigned int fmt)
0289 {
0290     struct snd_soc_component *component = codec_dai->component;
0291     u8 mode1 = 0;
0292
0293     /* interface format */
0294     switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
0295     case SND_SOC_DAIFMT_I2S:
0296         mode1 = 0x0002;
0297         break;
0298     case SND_SOC_DAIFMT_LEFT_J:
0299         mode1 = 0x0001;
0300         break;
0301     default:
0302         return -EINVAL;
0303     }
0304
0305     /* use 32 fs for BCLK to save power */
0306     mode1 |= 0x4;
0307
0308     snd_soc_component_write(component, AK4535_MODE1, mode1);
0309     return 0;
0310 }
0311
0312 static int ak4535_mute(struct snd_soc_dai *dai, int mute, int direction)
0313 {
0314     struct snd_soc_component *component = dai->component;
0315     u16 mute_reg = snd_soc_component_read(component, AK4535_DAC);
0316
0317     if (!mute)
0318         snd_soc_component_write(component, AK4535_DAC, mute_reg & ~0x20);
0319     else
0320         snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20);
0321     return 0;
0322 }
0323
0324 static int ak4535_set_bias_level(struct snd_soc_component *component,
0325     enum snd_soc_bias_level level)
0326 {
0327     switch (level) {
0328     case SND_SOC_BIAS_ON:
0329         snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0);
0330         break;
0331     case SND_SOC_BIAS_PREPARE:
0332         snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0x20);
0333         break;
0334     case SND_SOC_BIAS_STANDBY:
0335         snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0x80);
0336         snd_soc_component_update_bits(component, AK4535_PM2, 0x80, 0);
0337         break;
0338     case SND_SOC_BIAS_OFF:
0339         snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0);
0340         break;
0341     }
0342     return 0;
0343 }
0344
0345 #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
0346         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
0347         SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
0348
0349 static const struct snd_soc_dai_ops ak4535_dai_ops = {
0350     .hw_params  = ak4535_hw_params,
0351     .set_fmt    = ak4535_set_dai_fmt,
0352     .mute_stream    = ak4535_mute,
0353     .set_sysclk = ak4535_set_dai_sysclk,
0354     .no_capture_mute = 1,
0355 };
0356
0357 static struct snd_soc_dai_driver ak4535_dai = {
0358     .name = "ak4535-hifi",
0359     .playback = {
0360         .stream_name = "Playback",
0361         .channels_min = 1,
0362         .channels_max = 2,
0363         .rates = AK4535_RATES,
0364         .formats = SNDRV_PCM_FMTBIT_S16_LE,},
0365     .capture = {
0366         .stream_name = "Capture",
0367         .channels_min = 1,
0368         .channels_max = 2,
0369         .rates = AK4535_RATES,
0370         .formats = SNDRV_PCM_FMTBIT_S16_LE,},
0371     .ops = &ak4535_dai_ops,
0372 };
0373
0374 static int ak4535_resume(struct snd_soc_component *component)
0375 {
0376     snd_soc_component_cache_sync(component);
0377     return 0;
0378 }
0379
0380 static const struct regmap_config ak4535_regmap = {
0381     .reg_bits = 8,
0382     .val_bits = 8,
0383
0384     .max_register = AK4535_STATUS,
0385     .volatile_reg = ak4535_volatile,
0386
0387     .cache_type = REGCACHE_RBTREE,
0388     .reg_defaults = ak4535_reg_defaults,
0389     .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
0390 };
0391
0392 static const struct snd_soc_component_driver soc_component_dev_ak4535 = {
0393     .resume         = ak4535_resume,
0394     .set_bias_level     = ak4535_set_bias_level,
0395     .controls       = ak4535_snd_controls,
0396     .num_controls       = ARRAY_SIZE(ak4535_snd_controls),
0397     .dapm_widgets       = ak4535_dapm_widgets,
0398     .num_dapm_widgets   = ARRAY_SIZE(ak4535_dapm_widgets),
0399     .dapm_routes        = ak4535_audio_map,
0400     .num_dapm_routes    = ARRAY_SIZE(ak4535_audio_map),
0401     .suspend_bias_off   = 1,
0402     .idle_bias_on       = 1,
0403     .use_pmdown_time    = 1,
0404     .endianness     = 1,
0405 };
0406
0407 static int ak4535_i2c_probe(struct i2c_client *i2c)
0408 {
0409     struct ak4535_priv *ak4535;
0410     int ret;
0411
0412     ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
0413                   GFP_KERNEL);
0414     if (ak4535 == NULL)
0415         return -ENOMEM;
0416
0417     ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
0418     if (IS_ERR(ak4535->regmap)) {
0419         ret = PTR_ERR(ak4535->regmap);
0420         dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
0421         return ret;
0422     }
0423
0424     i2c_set_clientdata(i2c, ak4535);
0425
0426     ret = devm_snd_soc_register_component(&i2c->dev,
0427             &soc_component_dev_ak4535, &ak4535_dai, 1);
0428
0429     return ret;
0430 }
0431
0432 static const struct i2c_device_id ak4535_i2c_id[] = {
0433     { "ak4535", 0 },
0434     { }
0435 };
0436 MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
0437
0438 static struct i2c_driver ak4535_i2c_driver = {
0439     .driver = {
0440         .name = "ak4535",
0441     },
0442     .probe_new = ak4535_i2c_probe,
0443     .id_table = ak4535_i2c_id,
0444 };
0445
0446 module_i2c_driver(ak4535_i2c_driver);
0447
0448 MODULE_DESCRIPTION("Soc AK4535 driver");
0449 MODULE_AUTHOR("Richard Purdie");
0450 MODULE_LICENSE("GPL");