drivers/media/dvb-frontends/tda1004x.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/tda1004x.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/tda1004x.h
Extension
.h
Size
3645 bytes
Lines
137
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 tda1004x_state {
	struct i2c_adapter* i2c;
	const struct tda1004x_config* config;
	struct dvb_frontend frontend;

	/* private demod data */
	enum tda1004x_demod demod_type;
};

#if IS_REACHABLE(CONFIG_DVB_TDA1004X)
extern struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
					    struct i2c_adapter* i2c);

extern struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
					    struct i2c_adapter* i2c);
#else
static inline struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
					    struct i2c_adapter* i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
static inline struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
					    struct i2c_adapter* i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif // CONFIG_DVB_TDA1004X

static inline int tda1004x_writereg(struct dvb_frontend *fe, u8 reg, u8 val) {
	int r = 0;
	u8 buf[] = {reg, val};
	if (fe->ops.write)
		r = fe->ops.write(fe, buf, 2);
	return r;
}

#endif // TDA1004X_H

Annotation

Implementation Notes