drivers/media/dvb-frontends/lgdt3305.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/lgdt3305.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/lgdt3305.h
Extension
.h
Size
1945 bytes
Lines
83
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 lgdt3305_config {
	u8 i2c_addr;

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

	/* AGC Power reference - defaults are used if left unset */
	u16 usref_8vsb;   /* default: 0x32c4 */
	u16 usref_qam64;  /* default: 0x5400 */
	u16 usref_qam256; /* default: 0x2a80 */

	/* 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;

	/* use RF AGC loop - 0:disabled 1:enabled */
	unsigned int rf_agc_loop:1;

	enum lgdt3305_mpeg_mode mpeg_mode;
	enum lgdt3305_tp_clock_edge tpclk_edge;
	enum lgdt3305_tp_clock_mode tpclk_mode;
	enum lgdt3305_tp_valid_polarity tpvalid_polarity;
	enum lgdt_demod_chip_type demod_chip;
};

#if IS_REACHABLE(CONFIG_DVB_LGDT3305)
extern
struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
				     struct i2c_adapter *i2c_adap);
#else
static inline
struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
				     struct i2c_adapter *i2c_adap)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif /* CONFIG_DVB_LGDT3305 */

#endif /* _LGDT3305_H_ */

Annotation

Implementation Notes