drivers/media/dvb-frontends/dib0070.h

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/dib0070.h

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/dib0070.h
Extension
.h
Size
1965 bytes
Lines
74
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 dib0070_wbd_gain_cfg {
	u16 freq;
	u16 wbd_gain_val;
};

struct dib0070_config {
	u8 i2c_address;

	/* tuner pins controlled externally */
	int (*reset) (struct dvb_frontend *, int);
	int (*sleep) (struct dvb_frontend *, int);

	/*  offset in kHz */
	int freq_offset_khz_uhf;
	int freq_offset_khz_vhf;

	u8 osc_buffer_state;	/* 0= normal, 1= tri-state */
	u32 clock_khz;
	u8 clock_pad_drive;	/* (Drive + 1) * 2mA */

	u8 invert_iq;		/* invert Q - in case I or Q is inverted on the board */

	u8 force_crystal_mode;	/* if == 0 -> decision is made in the driver default: <24 -> 2, >=24 -> 1 */

	u8 flip_chip;
	u8 enable_third_order_filter;
	u8 charge_pump;

	const struct dib0070_wbd_gain_cfg *wbd_gain;

	u8 vga_filter;
};

#if IS_REACHABLE(CONFIG_DVB_TUNER_DIB0070)
extern struct dvb_frontend *dib0070_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct dib0070_config *cfg);
extern u16 dib0070_wbd_offset(struct dvb_frontend *);
extern void dib0070_ctrl_agc_filter(struct dvb_frontend *, u8 open);
extern u8 dib0070_get_rf_output(struct dvb_frontend *fe);
extern int dib0070_set_rf_output(struct dvb_frontend *fe, u8 no);
#else
static inline struct dvb_frontend *dib0070_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct dib0070_config *cfg)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}

static inline u16 dib0070_wbd_offset(struct dvb_frontend *fe)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return 0;
}

static inline void dib0070_ctrl_agc_filter(struct dvb_frontend *fe, u8 open)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
}
#endif

#endif

Annotation

Implementation Notes