drivers/media/dvb-frontends/ts2020.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/ts2020.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/ts2020.h
Extension
.h
Size
1547 bytes
Lines
75
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 ts2020_config {
	u8 tuner_address;
	u32 frequency_div;

	/*
	 * RF loop-through
	 */
	bool loop_through:1;

	/*
	 * clock output
	 */
#define TS2020_CLK_OUT_DISABLED        0
#define TS2020_CLK_OUT_ENABLED         1
#define TS2020_CLK_OUT_ENABLED_XTALOUT 2
	u8 clk_out:2;

	/*
	 * clock output divider
	 * 1 - 31
	 */
	u8 clk_out_div:5;

	/* Set to true to suppress stat polling */
	bool dont_poll:1;

	/*
	 * pointer to DVB frontend
	 */
	struct dvb_frontend *fe;

	/*
	 * driver private, do not set value
	 */
	u8 attach_in_use:1;

	/* Operation to be called by the ts2020 driver to get the value of the
	 * AGC PWM tuner input as theoretically output by the demodulator.
	 */
	int (*get_agc_pwm)(struct dvb_frontend *fe, u8 *_agc_pwm);
};

/* Do not add new ts2020_attach() users! Use I2C bindings instead. */
#if IS_REACHABLE(CONFIG_DVB_TS2020)
extern struct dvb_frontend *ts2020_attach(
	struct dvb_frontend *fe,
	const struct ts2020_config *config,
	struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *ts2020_attach(
	struct dvb_frontend *fe,
	const struct ts2020_config *config,
	struct i2c_adapter *i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif

#endif /* TS2020_H */

Annotation

Implementation Notes