drivers/media/dvb-frontends/lgdt3306a.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/lgdt3306a.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/lgdt3306a.h
Extension
.h
Size
1676 bytes
Lines
70
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 lgdt3306a_config {
	u8 i2c_addr;

	/* user defined IF frequency in KHz */
	u16 qam_if_khz;
	u16 vsb_if_khz;

	/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
	unsigned int deny_i2c_rptr:1;

	/* spectral inversion - 0:disabled 1:enabled */
	unsigned int spectral_inversion:1;

	enum lgdt3306a_mpeg_mode mpeg_mode;
	enum lgdt3306a_tp_clock_edge tpclk_edge;
	enum lgdt3306a_tp_valid_polarity tpvalid_polarity;

	/* demod clock freq in MHz; 24 or 25 supported */
	int  xtalMHz;

	/* returned by driver if using i2c bus multiplexing */
	struct dvb_frontend **fe;
	struct i2c_adapter **i2c_adapter;
};

#if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
				      struct i2c_adapter *i2c_adap);
#else
static inline
struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
				      struct i2c_adapter *i2c_adap)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif /* CONFIG_DVB_LGDT3306A */

#endif /* _LGDT3306A_H_ */

Annotation

Implementation Notes