// SPDX-License-Identifier: GPL-2.0-or-later /* * TAS5086 ASoC codec driver * * Copyright (c) 2013 Daniel Mack <[email protected]> * * TODO: * - implement DAPM and input muxing * - implement modulation limit * - implement non-default PWM start * * Note that this chip has a very unusual register layout, specifically * because the registers are of unequal size, and multi-byte registers * require bulk writes to take effect. Regmap does not support that kind * of devices. * * Currently, the driver does not touch any of the registers >= 0x20, so * it doesn't matter because the entire map can be accessed as 8-bit * array. In case more features will be added in the future * that require access to higher registers, the entire regmap H/W I/O * routines have to be open-coded. */ #include <linux/module.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/spi/spi.h> #include <linux/of.h> #include <linux/of_device.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/tlv.h> #include <sound/tas5086.h> #define TAS5086_PCM_FORMATS … #define TAS5086_PCM_RATES … /* * TAS5086 registers */ #define TAS5086_CLOCK_CONTROL … #define TAS5086_CLOCK_RATE(val) … #define TAS5086_CLOCK_RATE_MASK … #define TAS5086_CLOCK_RATIO(val) … #define TAS5086_CLOCK_RATIO_MASK … #define TAS5086_CLOCK_SCLK_RATIO_48 … #define TAS5086_CLOCK_VALID … #define TAS5086_DEEMPH_MASK … #define TAS5086_SOFT_MUTE_ALL … #define TAS5086_DEV_ID … #define TAS5086_ERROR_STATUS … #define TAS5086_SYS_CONTROL_1 … #define TAS5086_SERIAL_DATA_IF … #define TAS5086_SYS_CONTROL_2 … #define TAS5086_SOFT_MUTE … #define TAS5086_MASTER_VOL … #define TAS5086_CHANNEL_VOL(X) … #define TAS5086_VOLUME_CONTROL … #define TAS5086_MOD_LIMIT … #define TAS5086_PWM_START … #define TAS5086_SURROUND … #define TAS5086_SPLIT_CAP_CHARGE … #define TAS5086_OSC_TRIM … #define TAS5086_BKNDERR … #define TAS5086_INPUT_MUX … #define TAS5086_PWM_OUTPUT_MUX … #define TAS5086_MAX_REGISTER … #define TAS5086_PWM_START_MIDZ_FOR_START_1 … #define TAS5086_PWM_START_MIDZ_FOR_START_2 … #define TAS5086_PWM_START_CHANNEL_MASK … /* * Default TAS5086 power-up configuration */ static const struct reg_default tas5086_reg_defaults[] = …; static int tas5086_register_size(struct device *dev, unsigned int reg) { … } static bool tas5086_accessible_reg(struct device *dev, unsigned int reg) { … } static bool tas5086_volatile_reg(struct device *dev, unsigned int reg) { … } static bool tas5086_writeable_reg(struct device *dev, unsigned int reg) { … } static int tas5086_reg_write(void *context, unsigned int reg, unsigned int value) { … } static int tas5086_reg_read(void *context, unsigned int reg, unsigned int *value) { … } static const char * const supply_names[] = …; struct tas5086_private { … }; static int tas5086_deemph[] = …; static int tas5086_set_deemph(struct snd_soc_component *component) { … } static int tas5086_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int tas5086_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int tas5086_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { … } static int tas5086_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { … } static const int tas5086_sample_rates[] = …; static const int tas5086_ratios[] = …; static int index_in_array(const int *array, int len, int needle) { … } static int tas5086_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream) { … } static void tas5086_reset(struct tas5086_private *priv) { … } /* charge period values in microseconds */ static const int tas5086_charge_period[] = …; static int tas5086_init(struct device *dev, struct tas5086_private *priv) { … } /* TAS5086 controls */ static const DECLARE_TLV_DB_SCALE(tas5086_dac_tlv, -10350, 50, 1); static const struct snd_kcontrol_new tas5086_controls[] = …; /* Input mux controls */ static const char *tas5086_dapm_sdin_texts[] = …; static const struct soc_enum tas5086_dapm_input_mux_enum[] = …; static const struct snd_kcontrol_new tas5086_dapm_input_mux_controls[] = …; /* Output mux controls */ static const char *tas5086_dapm_channel_texts[] = …; static const struct soc_enum tas5086_dapm_output_mux_enum[] = …; static const struct snd_kcontrol_new tas5086_dapm_output_mux_controls[] = …; static const struct snd_soc_dapm_widget tas5086_dapm_widgets[] = …; static const struct snd_soc_dapm_route tas5086_dapm_routes[] = …; static const struct snd_soc_dai_ops tas5086_dai_ops = …; static struct snd_soc_dai_driver tas5086_dai = …; #ifdef CONFIG_PM static int tas5086_soc_suspend(struct snd_soc_component *component) { … } static int tas5086_soc_resume(struct snd_soc_component *component) { … } #else #define tas5086_soc_suspend … #define tas5086_soc_resume … #endif /* CONFIG_PM */ #ifdef CONFIG_OF static const struct of_device_id tas5086_dt_ids[] = …; MODULE_DEVICE_TABLE(of, tas5086_dt_ids); #endif static int tas5086_probe(struct snd_soc_component *component) { … } static void tas5086_remove(struct snd_soc_component *component) { struct tas5086_private *priv = snd_soc_component_get_drvdata(component); if (priv->reset) /* Set codec to the reset state */ gpiod_set_value(priv->reset, 1); regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies); }; static const struct snd_soc_component_driver soc_component_dev_tas5086 = …; static const struct i2c_device_id tas5086_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, tas5086_i2c_id); static const struct regmap_config tas5086_regmap = …; static int tas5086_i2c_probe(struct i2c_client *i2c) { … } static void tas5086_i2c_remove(struct i2c_client *i2c) { … } static struct i2c_driver tas5086_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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