drivers/media/dvb-frontends/isl6405.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/isl6405.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/isl6405.h
Extension
.h
Size
1450 bytes
Lines
58
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

#ifndef _ISL6405_H
#define _ISL6405_H

#include <linux/dvb/frontend.h>

/* system register bits */

/* this bit selects register (control) 1 or 2
   note that the bit maps are different */

#define ISL6405_SR	0x80

/* SR = 0 */
#define ISL6405_OLF1	0x01
#define ISL6405_EN1	0x02
#define ISL6405_VSEL1	0x04
#define ISL6405_LLC1	0x08
#define ISL6405_ENT1	0x10
#define ISL6405_ISEL1	0x20
#define ISL6405_DCL	0x40

/* SR = 1 */
#define ISL6405_OLF2	0x01
#define ISL6405_OTF	0x02
#define ISL6405_EN2	0x04
#define ISL6405_VSEL2	0x08
#define ISL6405_LLC2	0x10
#define ISL6405_ENT2	0x20
#define ISL6405_ISEL2	0x40

#if IS_REACHABLE(CONFIG_DVB_ISL6405)
/* override_set and override_clear control which system register bits (above)
 * to always set & clear
 */
extern struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c,
					   u8 i2c_addr, u8 override_set, u8 override_clear);
#else
static inline struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe,
						  struct i2c_adapter *i2c, u8 i2c_addr,
						  u8 override_set, u8 override_clear)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif /* CONFIG_DVB_ISL6405 */

#endif

Annotation

Implementation Notes