drivers/media/tuners/xc5000.h

Source file repositories/reference/linux-study-clean/drivers/media/tuners/xc5000.h

File Facts

System
Linux kernel
Corpus path
drivers/media/tuners/xc5000.h
Extension
.h
Size
1516 bytes
Lines
61
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 xc5000_config {
	u8   i2c_address;
	u32  if_khz;
	u8   radio_input;
	u16  xtal_khz;
	u16  output_amp;

	int chip_id;
};

/* xc5000 callback command */
#define XC5000_TUNER_RESET		0

/* Possible Radio inputs */
#define XC5000_RADIO_NOT_CONFIGURED		0
#define XC5000_RADIO_FM1			1
#define XC5000_RADIO_FM2			2
#define XC5000_RADIO_FM1_MONO			3

/* For each bridge framework, when it attaches either analog or digital,
 * it has to store a reference back to its _core equivalent structure,
 * so that it can service the hardware by steering gpio's etc.
 * Each bridge implementation is different so cast devptr accordingly.
 * The xc5000 driver cares not for this value, other than ensuring
 * it's passed back to a bridge during tuner_callback().
 */

#if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC5000)
extern struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
					  struct i2c_adapter *i2c,
					  const struct xc5000_config *cfg);
#else
static inline struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
						 struct i2c_adapter *i2c,
						 const struct xc5000_config *cfg)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif

#endif

Annotation

Implementation Notes