drivers/media/dvb-frontends/s5h1409.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/s5h1409.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/s5h1409.h
Extension
.h
Size
1828 bytes
Lines
71
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 s5h1409_config {
	/* the demodulator's i2c address */
	u8 demod_address;

	/* serial/parallel output */
#define S5H1409_PARALLEL_OUTPUT 0
#define S5H1409_SERIAL_OUTPUT   1
	u8 output_mode;

	/* GPIO Setting */
#define S5H1409_GPIO_OFF 0
#define S5H1409_GPIO_ON  1
	u8 gpio;

	/* IF Freq for QAM in KHz, VSB is hardcoded to 5380 */
	u16 qam_if;

	/* Spectral Inversion */
#define S5H1409_INVERSION_OFF 0
#define S5H1409_INVERSION_ON  1
	u8 inversion;

	/* Return lock status based on tuner lock, or demod lock */
#define S5H1409_TUNERLOCKING 0
#define S5H1409_DEMODLOCKING 1
	u8 status_mode;

	/* MPEG signal timing */
#define S5H1409_MPEGTIMING_CONTINUOUS_INVERTING_CLOCK       0
#define S5H1409_MPEGTIMING_CONTINUOUS_NONINVERTING_CLOCK    1
#define S5H1409_MPEGTIMING_NONCONTINUOUS_INVERTING_CLOCK    2
#define S5H1409_MPEGTIMING_NONCONTINUOUS_NONINVERTING_CLOCK 3
	u16 mpeg_timing;

	/* HVR-1600 optimizations (to better work with MXL5005s)
	   Note: some of these are likely to be folded into the generic driver
	   after being regression tested with other boards */
#define S5H1409_HVR1600_NOOPTIMIZE 0
#define S5H1409_HVR1600_OPTIMIZE   1
	u8 hvr1600_opt;
};

#if IS_REACHABLE(CONFIG_DVB_S5H1409)
extern struct dvb_frontend *s5h1409_attach(const struct s5h1409_config *config,
					   struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *s5h1409_attach(
	const struct s5h1409_config *config,
	struct i2c_adapter *i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif /* CONFIG_DVB_S5H1409 */

#endif /* __S5H1409_H__ */

Annotation

Implementation Notes