drivers/media/dvb-frontends/cx24123.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/cx24123.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/cx24123.h
Extension
.h
Size
1273 bytes
Lines
49
Domain
Driver Families
Bucket
drivers/media
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 cx24123_config {
	/* the demodulator's i2c address */
	u8 demod_address;

	/* Need to set device param for start_dma */
	int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);

	/* 0 = LNB voltage normal, 1 = LNB voltage inverted */
	int lnb_polarity;

	/* this device has another tuner */
	u8 dont_use_pll;
	void (*agc_callback) (struct dvb_frontend *);
};

#if IS_REACHABLE(CONFIG_DVB_CX24123)
extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
					   struct i2c_adapter *i2c);
extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
#else
static inline struct dvb_frontend *cx24123_attach(
	const struct cx24123_config *config, struct i2c_adapter *i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
static inline struct i2c_adapter *
	cx24123_get_tuner_i2c_adapter(struct dvb_frontend *fe)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif

#endif /* CX24123_H */

Annotation

Implementation Notes