// SPDX-License-Identifier: GPL-2.0-only /* * ALSA SoC Texas Instruments TLV320DAC33 codec driver * * Author: Peter Ujfalusi <[email protected]> * * Copyright: (C) 2009 Nokia Corporation */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/gpio.h> #include <linux/regulator/consumer.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/tlv320dac33-plat.h> #include "tlv320dac33.h" /* * The internal FIFO is 24576 bytes long * It can be configured to hold 16bit or 24bit samples * In 16bit configuration the FIFO can hold 6144 stereo samples * In 24bit configuration the FIFO can hold 4096 stereo samples */ #define DAC33_FIFO_SIZE_16BIT … #define DAC33_FIFO_SIZE_24BIT … #define DAC33_MODE7_MARGIN … #define BURST_BASEFREQ_HZ … #define SAMPLES_TO_US(rate, samples) … #define US_TO_SAMPLES(rate, us) … #define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) … static void dac33_calculate_times(struct snd_pcm_substream *substream, struct snd_soc_component *component); static int dac33_prepare_chip(struct snd_pcm_substream *substream, struct snd_soc_component *component); enum dac33_state { … }; enum dac33_fifo_modes { … }; #define DAC33_NUM_SUPPLIES … static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = …; struct tlv320dac33_priv { … }; static const u8 dac33_reg[DAC33_CACHEREGNUM] = …; /* Register read and write */ static inline unsigned int dac33_read_reg_cache(struct snd_soc_component *component, unsigned reg) { … } static inline void dac33_write_reg_cache(struct snd_soc_component *component, u8 reg, u8 value) { … } static int dac33_read(struct snd_soc_component *component, unsigned int reg, u8 *value) { … } static int dac33_write(struct snd_soc_component *component, unsigned int reg, unsigned int value) { … } static int dac33_write_locked(struct snd_soc_component *component, unsigned int reg, unsigned int value) { … } #define DAC33_I2C_ADDR_AUTOINC … static int dac33_write16(struct snd_soc_component *component, unsigned int reg, unsigned int value) { … } static void dac33_init_chip(struct snd_soc_component *component) { … } static inline int dac33_read_id(struct snd_soc_component *component) { … } static inline void dac33_soft_power(struct snd_soc_component *component, int power) { … } static inline void dac33_disable_digital(struct snd_soc_component *component) { … } static int dac33_hard_power(struct snd_soc_component *component, int power) { … } static int dac33_playback_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int dac33_get_fifo_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } /* Codec operation modes */ static const char *dac33_fifo_mode_texts[] = …; static SOC_ENUM_SINGLE_EXT_DECL(dac33_fifo_mode_enum, dac33_fifo_mode_texts); /* L/R Line Output Gain */ static const char *lr_lineout_gain_texts[] = …; static SOC_ENUM_SINGLE_DECL(l_lineout_gain_enum, DAC33_LDAC_PWR_CTRL, 0, lr_lineout_gain_texts); static SOC_ENUM_SINGLE_DECL(r_lineout_gain_enum, DAC33_RDAC_PWR_CTRL, 0, lr_lineout_gain_texts); /* * DACL/R digital volume control: * from 0 dB to -63.5 in 0.5 dB steps * Need to be inverted later on: * 0x00 == 0 dB * 0x7f == -63.5 dB */ static DECLARE_TLV_DB_SCALE(dac_digivol_tlv, -6350, 50, 0); static const struct snd_kcontrol_new dac33_snd_controls[] = …; static const struct snd_kcontrol_new dac33_mode_snd_controls[] = …; /* Analog bypass */ static const struct snd_kcontrol_new dac33_dapm_abypassl_control = …; static const struct snd_kcontrol_new dac33_dapm_abypassr_control = …; /* LOP L/R invert selection */ static const char *dac33_lr_lom_texts[] = …; static SOC_ENUM_SINGLE_DECL(dac33_left_lom_enum, DAC33_OUT_AMP_CTRL, 3, dac33_lr_lom_texts); static const struct snd_kcontrol_new dac33_dapm_left_lom_control = …; static SOC_ENUM_SINGLE_DECL(dac33_right_lom_enum, DAC33_OUT_AMP_CTRL, 2, dac33_lr_lom_texts); static const struct snd_kcontrol_new dac33_dapm_right_lom_control = …; static const struct snd_soc_dapm_widget dac33_dapm_widgets[] = …; static const struct snd_soc_dapm_route audio_map[] = …; static int dac33_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) { … } static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33) { … } static void dac33_work(struct work_struct *work) { … } static irqreturn_t dac33_interrupt_handler(int irq, void *dev) { … } static void dac33_oscwait(struct snd_soc_component *component) { … } static int dac33_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void dac33_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } #define CALC_BURST_RATE(bclkdiv, bclk_per_sample) … static int dac33_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } #define CALC_OSCSET(rate, refclk) … #define CALC_RATIOSET(rate, refclk) … /* * tlv320dac33 is strict on the sequence of the register writes, if the register * writes happens in different order, than dac33 might end up in unknown state. * Use the known, working sequence of register writes to initialize the dac33. */ static int dac33_prepare_chip(struct snd_pcm_substream *substream, struct snd_soc_component *component) { … } static void dac33_calculate_times(struct snd_pcm_substream *substream, struct snd_soc_component *component) { … } static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { … } static snd_pcm_sframes_t dac33_dai_delay( struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int dac33_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { … } static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { … } static int dac33_soc_probe(struct snd_soc_component *component) { … } static void dac33_soc_remove(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver soc_component_dev_tlv320dac33 = …; #define DAC33_RATES … #define DAC33_FORMATS … static const struct snd_soc_dai_ops dac33_dai_ops = …; static struct snd_soc_dai_driver dac33_dai = …; static int dac33_i2c_probe(struct i2c_client *client) { … } static void dac33_i2c_remove(struct i2c_client *client) { … } static const struct i2c_device_id tlv320dac33_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, tlv320dac33_i2c_id); static struct i2c_driver tlv320dac33_i2c_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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