diff options
Diffstat (limited to 'kernel/sound/soc/codecs/tfa9879.c')
| -rw-r--r-- | kernel/sound/soc/codecs/tfa9879.c | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/kernel/sound/soc/codecs/tfa9879.c b/kernel/sound/soc/codecs/tfa9879.c new file mode 100644 index 000000000..aab0af681 --- /dev/null +++ b/kernel/sound/soc/codecs/tfa9879.c @@ -0,0 +1,328 @@ +/* + * tfa9879.c -- driver for NXP Semiconductors TFA9879 + * + * Copyright (C) 2014 Axentia Technologies AB + * Author: Peter Rosin <peda@axentia.se> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include <sound/pcm_params.h> + +#include "tfa9879.h" + +struct tfa9879_priv { + struct regmap *regmap; + int lsb_justified; +}; + +static int tfa9879_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec); + int fs; + int i2s_set = 0; + + switch (params_rate(params)) { + case 8000: + fs = TFA9879_I2S_FS_8000; + break; + case 11025: + fs = TFA9879_I2S_FS_11025; + break; + case 12000: + fs = TFA9879_I2S_FS_12000; + break; + case 16000: + fs = TFA9879_I2S_FS_16000; + break; + case 22050: + fs = TFA9879_I2S_FS_22050; + break; + case 24000: + fs = TFA9879_I2S_FS_24000; + break; + case 32000: + fs = TFA9879_I2S_FS_32000; + break; + case 44100: + fs = TFA9879_I2S_FS_44100; + break; + case 48000: + fs = TFA9879_I2S_FS_48000; + break; + case 64000: + fs = TFA9879_I2S_FS_64000; + break; + case 88200: + fs = TFA9879_I2S_FS_88200; + break; + case 96000: + fs = TFA9879_I2S_FS_96000; + break; + default: + return -EINVAL; + } + + switch (params_width(params)) { + case 16: + i2s_set = TFA9879_I2S_SET_LSB_J_16; + break; + case 24: + i2s_set = TFA9879_I2S_SET_LSB_J_24; + break; + default: + return -EINVAL; + } + + if (tfa9879->lsb_justified) + snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1, + TFA9879_I2S_SET_MASK, + i2s_set << TFA9879_I2S_SET_SHIFT); + + snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1, + TFA9879_I2S_FS_MASK, + fs << TFA9879_I2S_FS_SHIFT); + return 0; +} + +static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + + snd_soc_update_bits(codec, TFA9879_MISC_CONTROL, + TFA9879_S_MUTE_MASK, + !!mute << TFA9879_S_MUTE_SHIFT); + + return 0; +} + +static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec); + int i2s_set; + int sck_pol; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + sck_pol = TFA9879_SCK_POL_NORMAL; + break; + case SND_SOC_DAIFMT_IB_NF: + sck_pol = TFA9879_SCK_POL_INVERSE; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + tfa9879->lsb_justified = 0; + i2s_set = TFA9879_I2S_SET_I2S_24; + break; + case SND_SOC_DAIFMT_LEFT_J: + tfa9879->lsb_justified = 0; + i2s_set = TFA9879_I2S_SET_MSB_J_24; + break; + case SND_SOC_DAIFMT_RIGHT_J: + tfa9879->lsb_justified = 1; + i2s_set = TFA9879_I2S_SET_LSB_J_24; + break; + default: + return -EINVAL; + } + + snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1, + TFA9879_SCK_POL_MASK, + sck_pol << TFA9879_SCK_POL_SHIFT); + snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1, + TFA9879_I2S_SET_MASK, + i2s_set << TFA9879_I2S_SET_SHIFT); + return 0; +} + +static struct reg_default tfa9879_regs[] = { + { TFA9879_DEVICE_CONTROL, 0x0000 }, /* 0x00 */ + { TFA9879_SERIAL_INTERFACE_1, 0x0a18 }, /* 0x01 */ + { TFA9879_PCM_IOM2_FORMAT_1, 0x0007 }, /* 0x02 */ + { TFA9879_SERIAL_INTERFACE_2, 0x0a18 }, /* 0x03 */ + { TFA9879_PCM_IOM2_FORMAT_2, 0x0007 }, /* 0x04 */ + { TFA9879_EQUALIZER_A1, 0x59dd }, /* 0x05 */ + { TFA9879_EQUALIZER_A2, 0xc63e }, /* 0x06 */ + { TFA9879_EQUALIZER_B1, 0x651a }, /* 0x07 */ + { TFA9879_EQUALIZER_B2, 0xe53e }, /* 0x08 */ + { TFA9879_EQUALIZER_C1, 0x4616 }, /* 0x09 */ + { TFA9879_EQUALIZER_C2, 0xd33e }, /* 0x0a */ + { TFA9879_EQUALIZER_D1, 0x4df3 }, /* 0x0b */ + { TFA9879_EQUALIZER_D2, 0xea3e }, /* 0x0c */ + { TFA9879_EQUALIZER_E1, 0x5ee0 }, /* 0x0d */ + { TFA9879_EQUALIZER_E2, 0xf93e }, /* 0x0e */ + { TFA9879_BYPASS_CONTROL, 0x0093 }, /* 0x0f */ + { TFA9879_DYNAMIC_RANGE_COMPR, 0x92ba }, /* 0x10 */ + { TFA9879_BASS_TREBLE, 0x12a5 }, /* 0x11 */ + { TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */ + { TFA9879_VOLUME_CONTROL, 0x10bd }, /* 0x13 */ + { TFA9879_MISC_CONTROL, 0x0000 }, /* 0x14 */ +}; + +static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg) +{ + return reg == TFA9879_MISC_STATUS; +} + +static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1); +static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0); +static const char * const tb_freq_text[] = { + "Low", "Mid", "High" +}; +static const struct soc_enum treble_freq_enum = + SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT, + ARRAY_SIZE(tb_freq_text), tb_freq_text); +static const struct soc_enum bass_freq_enum = + SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT, + ARRAY_SIZE(tb_freq_text), tb_freq_text); + +static const struct snd_kcontrol_new tfa9879_controls[] = { + SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL, + TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv), + SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE, + TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv), + SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE, + TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv), + SOC_ENUM("Treble Corner Freq", treble_freq_enum), + SOC_ENUM("Bass Corner Freq", bass_freq_enum), +}; + +static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = { +SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0), +SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0), +SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0), +SND_SOC_DAPM_OUTPUT("LINEOUT"), +SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0, + NULL, 0), +}; + +static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = { + { "DAC", NULL, "AIFINL" }, + { "DAC", NULL, "AIFINR" }, + + { "LINEOUT", NULL, "DAC" }, + + { "DAC", NULL, "POWER" }, +}; + +static const struct snd_soc_codec_driver tfa9879_codec = { + .controls = tfa9879_controls, + .num_controls = ARRAY_SIZE(tfa9879_controls), + + .dapm_widgets = tfa9879_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets), + .dapm_routes = tfa9879_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes), +}; + +static const struct regmap_config tfa9879_regmap = { + .reg_bits = 8, + .val_bits = 16, + + .volatile_reg = tfa9879_volatile_reg, + .max_register = TFA9879_MISC_STATUS, + .reg_defaults = tfa9879_regs, + .num_reg_defaults = ARRAY_SIZE(tfa9879_regs), + .cache_type = REGCACHE_RBTREE, +}; + +static const struct snd_soc_dai_ops tfa9879_dai_ops = { + .hw_params = tfa9879_hw_params, + .digital_mute = tfa9879_digital_mute, + .set_fmt = tfa9879_set_fmt, +}; + +#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000 + +#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE) + +static struct snd_soc_dai_driver tfa9879_dai = { + .name = "tfa9879-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = TFA9879_RATES, + .formats = TFA9879_FORMATS, }, + .ops = &tfa9879_dai_ops, +}; + +static int tfa9879_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct tfa9879_priv *tfa9879; + int i; + + tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL); + if (!tfa9879) + return -ENOMEM; + + i2c_set_clientdata(i2c, tfa9879); + + tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap); + if (IS_ERR(tfa9879->regmap)) + return PTR_ERR(tfa9879->regmap); + + /* Ensure the device is in reset state */ + for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++) + regmap_write(tfa9879->regmap, + tfa9879_regs[i].reg, tfa9879_regs[i].def); + + return snd_soc_register_codec(&i2c->dev, &tfa9879_codec, + &tfa9879_dai, 1); +} + +static int tfa9879_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + + return 0; +} + +static const struct i2c_device_id tfa9879_i2c_id[] = { + { "tfa9879", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id); + +static struct i2c_driver tfa9879_i2c_driver = { + .driver = { + .name = "tfa9879", + .owner = THIS_MODULE, + }, + .probe = tfa9879_i2c_probe, + .remove = tfa9879_i2c_remove, + .id_table = tfa9879_i2c_id, +}; + +module_i2c_driver(tfa9879_i2c_driver); + +MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver"); +MODULE_AUTHOR("Peter Rosin <peda@axentia.se>"); +MODULE_LICENSE("GPL"); |