/* * ak4641.c -- AK4641 ALSA Soc Audio driver * * Copyright (C) 2008 Harald Welte <laforge@gnufiish.org> * Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru> * * Based on ak4535.c by Richard Purdie * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/gpio.h> #include <linux/pm.h> #include <linux/i2c.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/initval.h> #include <sound/tlv.h> #include <sound/ak4641.h> #include "ak4641.h" /* codec private data */ struct ak4641_priv { unsigned int sysclk; int deemph; int playback_fs; }; /* * ak4641 register cache */ static const u8 ak4641_reg[AK4641_CACHEREGNUM] = { 0x00, 0x80, 0x00, 0x80, 0x02, 0x00, 0x11, 0x05, 0x00, 0x00, 0x36, 0x10, 0x00, 0x00, 0x57, 0x00, 0x88, 0x88, 0x08, 0x08 }; static const int deemph_settings[] = {44100, 0, 48000, 32000}; static int ak4641_set_deemph(struct snd_soc_codec *codec) { struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); int i, best = 0; for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) { /* if deemphasis is on, select the nearest available rate */ if (ak4641->deemph && deemph_settings[i] != 0 && abs(deemph_settings[i] - ak4641->playback_fs) < abs(deemph_settings[best] - ak4641->playback_fs)) best = i; if (!ak4641->deemph && deemph_settings[i] == 0) best = i; } dev_dbg(codec->dev, "Set deemphasis %d\n", best); return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best); } static int ak4641_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); int deemph = ucontrol->value.enumerated.item[0]; if (deemph > 1) return -EINVAL; ak4641->deemph = deemph; return ak4641_set_deemph(codec); } static int ak4641_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); ucontrol->value.enumerated.item[0] = ak4641->deemph; return 0; }; static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"}; static const char *ak4641_hp_out[] = {"Stereo", "Mono"}; static const char *ak4641_mic_select[] = {"Internal", "External"}; static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"}; static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0); static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0); static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0); static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0); static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0); static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0); static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0); static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0); static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0); static const struct soc_enum ak4641_mono_out_enum = SOC_ENUM_SINGLE(AK4641_SIG1, 6, 2, ak4641_mono_out); static const struct soc_enum ak4641_hp_out_enum = SOC_ENUM_SINGLE(AK4641_MODE2, 2, 2, ak4641_hp_out); static const struct soc_enum ak4641_mic_select_enum = SOC_ENUM_SINGLE(AK4641_MIC, 1, 2, ak4641_mic_select); static const struct soc_enum ak4641_mic_or_dac_enum = SOC_ENUM_SINGLE(AK4641_BTIF, 4, 2, ak4641_mic_or_dac); static const struct snd_kcontrol_new ak4641_snd_controls[] = { SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum), SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1, mono_gain_tlv), SOC_ENUM("Headphone Output", ak4641_hp_out_enum), SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, ak4641_get_deemph, ak4641_put_deemph), SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv), SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0), SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0), SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0), SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0), SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv), SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0), SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0), SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv), SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT, AK4641_RATT, 0, 255, 1, master_tlv), SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv), SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0), SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv), SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv), SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv), SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv), SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv), }; /* Mono 1 Mixer */ static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = { SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0, mic_mono_sidetone_tlv), SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0), SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0), }; /* Stereo Mixer */ static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = { SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0, mic_stereo_sidetone_tlv), SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0), SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0), SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0), }; /* Input Mixer */ static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = { SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0), SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0), }; /* Mic mux */ static const struct snd_kcontrol_new ak4641_mic_mux_control = SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum); /* Input mux */ static const struct snd_kcontrol_new ak4641_input_mux_control = SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum); /* mono 2 switch */ static const struct snd_kcontrol_new ak4641_mono2_control = SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0); /* ak4641 dapm widgets */ static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = { SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0, &ak4641_stereo_mixer_controls[0], ARRAY_SIZE(ak4641_stereo_mixer_controls)), SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0, &ak4641_mono1_mixer_controls[0], ARRAY_SIZE(ak4641_mono1_mixer_controls)), SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, &ak4641_input_mixer_controls[0], ARRAY_SIZE(ak4641_input_mixer_controls)), SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0, &ak4641_mic_mux_control), SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ak4641_input_mux_control), SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0, &ak4641_mono2_control), SND_SOC_DAPM_OUTPUT("LOUT"), SND_SOC_DAPM_OUTPUT("ROUT"), SND_SOC_DAPM_OUTPUT("MOUT1"), SND_SOC_DAPM_OUTPUT("MOUT2"), SND_SOC_DAPM_OUTPUT("MICOUT"), SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0), SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0), SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0), SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0), SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0), SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0), SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0), SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0), SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0), SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0), SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0), SND_SOC_DAPM_INPUT("MICIN"), SND_SOC_DAPM_INPUT("MICEXT"), SND_SOC_DAPM_INPUT("AUX"), SND_SOC_DAPM_INPUT("AIN"), }; static const struct snd_soc_dapm_route ak4641_audio_map[] = { /* Stereo Mixer */ {"Stereo Mixer", "Playback Switch", "DAC"}, {"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"}, {"Stereo Mixer", "Aux Bypass Switch", "AUX In"}, /* Mono 1 Mixer */ {"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"}, {"Mono1 Mixer", "Mono Playback Switch", "DAC"}, /* Mic */ {"Mic", NULL, "AIN"}, {"Mic Mux", "Internal", "Mic Int Bias"}, {"Mic Mux", "External", "Mic Ext Bias"}, {"Mic Int Bias", NULL, "MICIN"}, {"Mic Ext Bias", NULL, "MICEXT"}, {"MICOUT", NULL, "Mic Mux"}, /* Input Mux */ {"Input Mux", "Microphone", "Mic"}, {"Input Mux", "Voice DAC", "Voice DAC"}, /* Line Out */ {"LOUT", NULL, "Line Out"}, {"ROUT", NULL, "Line Out"}, {"Line Out", NULL, "Stereo Mixer"}, /* Mono 1 Out */ {"MOUT1", NULL, "Mono Out"}, {"Mono Out", NULL, "Mono1 Mixer"}, /* Mono 2 Out */ {"MOUT2", NULL, "Mono 2 Enable"}, {"Mono 2 Enable", "Switch", "Mono Out 2"}, {"Mono Out 2", NULL, "Stereo Mixer"}, {"Voice ADC", NULL, "Mono 2 Enable"}, /* Aux In */ {"AUX In", NULL, "AUX"}, /* ADC */ {"ADC", NULL, "Input Mixer"}, {"Input Mixer", "Mic Capture Switch", "Mic"}, {"Input Mixer", "Aux Capture Switch", "AUX In"}, }; static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = codec_dai->codec; struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); ak4641->sysclk = freq; return 0; } static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec); int rate = params_rate(params), fs = 256; u8 mode2; if (rate) fs = ak4641->sysclk / rate; else return -EINVAL; /* set fs */ switch (fs) { case 1024: mode2 = (0x2 << 5); break; case 512: mode2 = (0x1 << 5); break; case 256: mode2 = (0x0 << 5); break; default: dev_err(codec->dev, "Error: unsupported fs=%d\n", fs); return -EINVAL; } snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2); /* Update de-emphasis filter for the new rate */ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { ak4641->playback_fs = rate; ak4641_set_deemph(codec); }; return 0; } static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; u8 btif; /* interface format */ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: btif = (0x3 << 5); break; case SND_SOC_DAIFMT_LEFT_J: btif = (0x2 << 5); break; case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */ btif = (0x0 << 5); break; case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */ btif = (0x1 << 5); break; default: return -EINVAL; } return snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif); } static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_codec *codec = codec_dai->codec; u8 mode1 = 0; /* interface format */ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: mode1 = 0x02; break; case SND_SOC_DAIFMT_LEFT_J: mode1 = 0x01; break; default: return -EINVAL; } return snd_soc_write(codec, AK4641_MODE1, mode1); } static int ak4641_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0); } static int ak4641_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { struct ak4641_platform_data *pdata = codec->dev->platform_data; int ret; switch (level) { case SND_SOC_BIAS_ON: /* unmute */ snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0); break; case SND_SOC_BIAS_PREPARE: /* mute */ snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20); break; case SND_SOC_BIAS_STANDBY: if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { if (pdata && gpio_is_valid(pdata->gpio_power)) gpio_set_value(pdata->gpio_power, 1); mdelay(1); if (pdata && gpio_is_valid(pdata->gpio_npdn)) gpio_set_value(pdata->gpio_npdn, 1); mdelay(1); ret = snd_soc_cache_sync(codec); if (ret) { dev_err(codec->dev, "Failed to sync cache: %d\n", ret); return ret; } } snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80); snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0); break; case SND_SOC_BIAS_OFF: snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0); if (pdata && gpio_is_valid(pdata->gpio_npdn)) gpio_set_value(pdata->gpio_npdn, 0); if (pdata && gpio_is_valid(pdata->gpio_power)) gpio_set_value(pdata->gpio_power, 0); codec->cache_sync = 1; break; } codec->dapm.bias_level = level; return 0; } #define AK4641_RATES (SNDRV_PCM_RATE_8000_48000) #define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ SNDRV_PCM_RATE_16000) #define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = { .hw_params = ak4641_i2s_hw_params, .set_fmt = ak4641_i2s_set_dai_fmt, .digital_mute = ak4641_mute, .set_sysclk = ak4641_set_dai_sysclk, }; static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = { .hw_params = NULL, /* rates are controlled by BT chip */ .set_fmt = ak4641_pcm_set_dai_fmt, .digital_mute = ak4641_mute, .set_sysclk = ak4641_set_dai_sysclk, }; static struct snd_soc_dai_driver ak4641_dai[] = { { .name = "ak4641-hifi", .id = 1, .playback = { .stream_name = "HiFi Playback", .channels_min = 1, .channels_max = 2, .rates = AK4641_RATES, .formats = AK4641_FORMATS, }, .capture = { .stream_name = "HiFi Capture", .channels_min = 1, .channels_max = 2, .rates = AK4641_RATES, .formats = AK4641_FORMATS, }, .ops = &ak4641_i2s_dai_ops, .symmetric_rates = 1, }, { .name = "ak4641-voice", .id = 1, .playback = { .stream_name = "Voice Playback", .channels_min = 1, .channels_max = 1, .rates = AK4641_RATES_BT, .formats = AK4641_FORMATS, }, .capture = { .stream_name = "Voice Capture", .channels_min = 1, .channels_max = 1, .rates = AK4641_RATES_BT, .formats = AK4641_FORMATS, }, .ops = &ak4641_pcm_dai_ops, .symmetric_rates = 1, }, }; static int ak4641_suspend(struct snd_soc_codec *codec) { ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static int ak4641_resume(struct snd_soc_codec *codec) { ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; } static int ak4641_probe(struct snd_soc_codec *codec) { struct ak4641_platform_data *pdata = codec->dev->platform_data; int ret; if (pdata) { if (gpio_is_valid(pdata->gpio_power)) { ret = gpio_request_one(pdata->gpio_power, GPIOF_OUT_INIT_LOW, "ak4641 power"); if (ret) goto err_out; } if (gpio_is_valid(pdata->gpio_npdn)) { ret = gpio_request_one(pdata->gpio_npdn, GPIOF_OUT_INIT_LOW, "ak4641 npdn"); if (ret) goto err_gpio; udelay(1); /* > 150 ns */ gpio_set_value(pdata->gpio_npdn, 1); } } ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C); if (ret != 0) { dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); goto err_register; } /* power on device */ ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; err_register: if (pdata) { if (gpio_is_valid(pdata->gpio_power)) gpio_set_value(pdata->gpio_power, 0); if (gpio_is_valid(pdata->gpio_npdn)) gpio_free(pdata->gpio_npdn); } err_gpio: if (pdata && gpio_is_valid(pdata->gpio_power)) gpio_free(pdata->gpio_power); err_out: return ret; } static int ak4641_remove(struct snd_soc_codec *codec) { struct ak4641_platform_data *pdata = codec->dev->platform_data; ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF); if (pdata) { if (gpio_is_valid(pdata->gpio_power)) { gpio_set_value(pdata->gpio_power, 0); gpio_free(pdata->gpio_power); } if (gpio_is_valid(pdata->gpio_npdn)) gpio_free(pdata->gpio_npdn); } return 0; } static struct snd_soc_codec_driver soc_codec_dev_ak4641 = { .probe = ak4641_probe, .remove = ak4641_remove, .suspend = ak4641_suspend, .resume = ak4641_resume, .controls = ak4641_snd_controls, .num_controls = ARRAY_SIZE(ak4641_snd_controls), .dapm_widgets = ak4641_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets), .dapm_routes = ak4641_audio_map, .num_dapm_routes = ARRAY_SIZE(ak4641_audio_map), .set_bias_level = ak4641_set_bias_level, .reg_cache_size = ARRAY_SIZE(ak4641_reg), .reg_word_size = sizeof(u8), .reg_cache_default = ak4641_reg, .reg_cache_step = 1, }; static int __devinit ak4641_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct ak4641_priv *ak4641; int ret; ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv), GFP_KERNEL); if (!ak4641) return -ENOMEM; i2c_set_clientdata(i2c, ak4641); ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641, ak4641_dai, ARRAY_SIZE(ak4641_dai)); return ret; } static int __devexit ak4641_i2c_remove(struct i2c_client *i2c) { snd_soc_unregister_codec(&i2c->dev); return 0; } static const struct i2c_device_id ak4641_i2c_id[] = { { "ak4641", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id); static struct i2c_driver ak4641_i2c_driver = { .driver = { .name = "ak4641", .owner = THIS_MODULE, }, .probe = ak4641_i2c_probe, .remove = __devexit_p(ak4641_i2c_remove), .id_table = ak4641_i2c_id, }; static int __init ak4641_modinit(void) { int ret; ret = i2c_add_driver(&ak4641_i2c_driver); if (ret != 0) pr_err("Failed to register AK4641 I2C driver: %d\n", ret); return ret; } module_init(ak4641_modinit); static void __exit ak4641_exit(void) { i2c_del_driver(&ak4641_i2c_driver); } module_exit(ak4641_exit); MODULE_DESCRIPTION("SoC AK4641 driver"); MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>"); MODULE_LICENSE("GPL");