sound/soc/codecs/cs42l43.h

Source file repositories/reference/linux-study-clean/sound/soc/codecs/cs42l43.h

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/cs42l43.h
Extension
.h
Size
3916 bytes
Lines
147
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cs42l43_codec {
	struct device *dev;
	struct cs42l43 *core;
	struct snd_soc_component *component;
	struct irq_domain *dom;
	unsigned int shutter_irqs[4];

	struct clk *mclk;

	int n_slots;
	int slot_width;
	int tx_slots[CS42L43_ASP_MAX_CHANNELS];
	int rx_slots[CS42L43_ASP_MAX_CHANNELS];
	struct snd_pcm_hw_constraint_list constraint;

	u32 eq_coeffs[CS42L43_N_EQ_COEFFS];

	unsigned int refclk_src;
	unsigned int refclk_freq;
	struct completion pll_ready;

	unsigned int decim_cache[6];
	unsigned int adc_ena;
	unsigned int hp_ena;

	struct completion hp_startup;
	struct completion hp_shutdown;
	struct completion spkr_shutdown;
	struct completion spkl_shutdown;
	struct completion spkr_startup;
	struct completion spkl_startup;
	// Lock to ensure speaker VU updates don't clash
	struct mutex spk_vu_lock;

	// Lock for all jack detect operations
	struct mutex jack_lock;
	struct snd_soc_jack *jack_hp;

	bool use_ring_sense;
	unsigned int tip_debounce_ms;
	unsigned int tip_fall_db_ms;
	unsigned int tip_rise_db_ms;
	unsigned int bias_low;
	unsigned int bias_sense_ua;
	unsigned int bias_ramp_ms;
	unsigned int detect_us;
	unsigned int buttons[CS42L43_N_BUTTONS];

	struct delayed_work tip_sense_work;
	struct delayed_work bias_sense_timeout;
	struct completion type_detect;
	struct completion load_detect;

	bool load_detect_running;
	bool button_detect_running;
	bool jack_present;
	int jack_override;
	bool suspend_jack_debounce;

	struct delayed_work hp_ilimit_clear_work;
	bool hp_ilimited;
	int hp_ilimit_count;

	struct snd_kcontrol *kctl[7];
};

#if IS_REACHABLE(CONFIG_SND_SOC_CS42L43_SDW)

int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
			       struct snd_pcm_hw_params *params,
			       struct snd_soc_dai *dai);
int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
				  struct snd_soc_dai *dai);
int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction);

#else

static inline int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
					     struct snd_pcm_hw_params *params,
					     struct snd_soc_dai *dai)
{
	return -EINVAL;
}

#define cs42l43_sdw_remove_peripheral NULL
#define cs42l43_sdw_set_stream NULL

#endif

int cs42l43_set_jack(struct snd_soc_component *component,

Annotation

Implementation Notes