sound/soc/codecs/wcd938x.h

Source file repositories/reference/linux-study-clean/sound/soc/codecs/wcd938x.h

File Facts

System: Linux kernel
Corpus path: sound/soc/codecs/wcd938x.h
Extension: .h
Size: 33998 bytes
Lines: 687
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.

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.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/soundwire/sdw.h
linux/soundwire/sdw_type.h

Detected Declarations

struct wcd938x_priv
struct wcd938x_sdw_priv
enum wcd938x_tx_sdw_ports
enum wcd938x_tx_sdw_channels
enum wcd938x_rx_sdw_ports
enum wcd938x_rx_sdw_channels
function wcd938x_sdw_free
function wcd938x_sdw_set_sdw_stream
function wcd938x_sdw_hw_params

Annotated Snippet

struct wcd938x_sdw_priv {
	struct sdw_slave *sdev;
	struct sdw_stream_config sconfig;
	struct sdw_stream_runtime *sruntime;
	struct sdw_port_config port_config[WCD938X_MAX_SWR_PORTS];
	const struct wcd_sdw_ch_info *ch_info;
	bool port_enable[WCD938X_MAX_SWR_CH_IDS];
	int active_ports;
	bool is_tx;
	struct wcd938x_priv *wcd938x;
	struct irq_domain *slave_irq;
	struct regmap *regmap;
};

#if IS_ENABLED(CONFIG_SND_SOC_WCD938X_SDW)
int wcd938x_sdw_free(struct wcd938x_sdw_priv *wcd,
		     struct snd_pcm_substream *substream,
		     struct snd_soc_dai *dai);
int wcd938x_sdw_set_sdw_stream(struct wcd938x_sdw_priv *wcd,
			       struct snd_soc_dai *dai,
			       void *stream, int direction);
int wcd938x_sdw_hw_params(struct wcd938x_sdw_priv *wcd,
			  struct snd_pcm_substream *substream,
			  struct snd_pcm_hw_params *params,
			  struct snd_soc_dai *dai);
#else

static inline int wcd938x_sdw_free(struct wcd938x_sdw_priv *wcd,
		     struct snd_pcm_substream *substream,
		     struct snd_soc_dai *dai)
{
	return -EOPNOTSUPP;
}

static inline int wcd938x_sdw_set_sdw_stream(struct wcd938x_sdw_priv *wcd,
			       struct snd_soc_dai *dai,
			       void *stream, int direction)
{
	return -EOPNOTSUPP;
}

static inline int wcd938x_sdw_hw_params(struct wcd938x_sdw_priv *wcd,
			  struct snd_pcm_substream *substream,
			  struct snd_pcm_hw_params *params,
			  struct snd_soc_dai *dai)
{
	return -EOPNOTSUPP;
}

#endif /* CONFIG_SND_SOC_WCD938X_SDW */
#endif /* __WCD938X_H__ */

Annotation

Immediate include surface: `linux/soundwire/sdw.h`, `linux/soundwire/sdw_type.h`.
Detected declarations: `struct wcd938x_priv`, `struct wcd938x_sdw_priv`, `enum wcd938x_tx_sdw_ports`, `enum wcd938x_tx_sdw_channels`, `enum wcd938x_rx_sdw_ports`, `enum wcd938x_rx_sdw_channels`, `function wcd938x_sdw_free`, `function wcd938x_sdw_set_sdw_stream`, `function wcd938x_sdw_hw_params`.
Atlas domain: Driver Families / sound/soc.
Implementation status: source implementation candidate.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.