| // SPDX-License-Identifier: GPL-2.0+ |
| // |
| // tfa9879.c -- driver for NXP Semiconductors TFA9879 |
| // |
| // Copyright (C) 2014 Axentia Technologies AB |
| // Author: Peter Rosin <peda@axentia.se> |
| |
| #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_component *component = dai->component; |
| struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component); |
| 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_component_update_bits(component, |
| TFA9879_SERIAL_INTERFACE_1, |
| TFA9879_I2S_SET_MASK, |
| i2s_set << TFA9879_I2S_SET_SHIFT); |
| |
| snd_soc_component_update_bits(component, 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_component *component = dai->component; |
| |
| snd_soc_component_update_bits(component, 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_component *component = dai->component; |
| struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component); |
| 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_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1, |
| TFA9879_SCK_POL_MASK, |
| sck_pol << TFA9879_SCK_POL_SHIFT); |
| snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1, |
| TFA9879_I2S_SET_MASK, |
| i2s_set << TFA9879_I2S_SET_SHIFT); |
| return 0; |
| } |
| |
| static const 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_component_driver tfa9879_component = { |
| .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), |
| .idle_bias_on = 1, |
| .use_pmdown_time = 1, |
| .endianness = 1, |
| .non_legacy_dai_naming = 1, |
| }; |
| |
| 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) |
| { |
| 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 devm_snd_soc_register_component(&i2c->dev, &tfa9879_component, |
| &tfa9879_dai, 1); |
| } |
| |
| static const struct i2c_device_id tfa9879_i2c_id[] = { |
| { "tfa9879", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id); |
| |
| static const struct of_device_id tfa9879_of_match[] = { |
| { .compatible = "nxp,tfa9879", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, tfa9879_of_match); |
| |
| static struct i2c_driver tfa9879_i2c_driver = { |
| .driver = { |
| .name = "tfa9879", |
| .of_match_table = tfa9879_of_match, |
| }, |
| .probe_new = tfa9879_i2c_probe, |
| .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"); |
