drivers/media/tuners/tda18271.h

Source file repositories/reference/linux-study-clean/drivers/media/tuners/tda18271.h

File Facts

System
Linux kernel
Corpus path
drivers/media/tuners/tda18271.h
Extension
.h
Size
3160 bytes
Lines
128
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 tda18271_std_map_item {
	u16 if_freq;

	/* EP3[4:3] */
	unsigned int agc_mode:2;
	/* EP3[2:0] */
	unsigned int std:3;
	/* EP4[7] */
	unsigned int fm_rfn:1;
	/* EP4[4:2] */
	unsigned int if_lvl:3;
	/* EB22[6:0] */
	unsigned int rfagc_top:7;
};

struct tda18271_std_map {
	struct tda18271_std_map_item fm_radio;
	struct tda18271_std_map_item atv_b;
	struct tda18271_std_map_item atv_dk;
	struct tda18271_std_map_item atv_gh;
	struct tda18271_std_map_item atv_i;
	struct tda18271_std_map_item atv_l;
	struct tda18271_std_map_item atv_lc;
	struct tda18271_std_map_item atv_mn;
	struct tda18271_std_map_item atsc_6;
	struct tda18271_std_map_item dvbt_6;
	struct tda18271_std_map_item dvbt_7;
	struct tda18271_std_map_item dvbt_8;
	struct tda18271_std_map_item qam_6;
	struct tda18271_std_map_item qam_7;
	struct tda18271_std_map_item qam_8;
};

enum tda18271_role {
	TDA18271_MASTER = 0,
	TDA18271_SLAVE,
};

enum tda18271_i2c_gate {
	TDA18271_GATE_AUTO = 0,
	TDA18271_GATE_ANALOG,
	TDA18271_GATE_DIGITAL,
};

enum tda18271_output_options {
	/* slave tuner output & loop through & xtal oscillator always on */
	TDA18271_OUTPUT_LT_XT_ON = 0,

	/* slave tuner output loop through off */
	TDA18271_OUTPUT_LT_OFF = 1,

	/* xtal oscillator off */
	TDA18271_OUTPUT_XT_OFF = 2,
};

enum tda18271_small_i2c {
	TDA18271_39_BYTE_CHUNK_INIT = 0,
	TDA18271_16_BYTE_CHUNK_INIT = 16,
	TDA18271_08_BYTE_CHUNK_INIT = 8,
	TDA18271_03_BYTE_CHUNK_INIT = 3,
};

struct tda18271_config {
	/* override default if freq / std settings (optional) */
	struct tda18271_std_map *std_map;

	/* master / slave tuner: master uses main pll, slave uses cal pll */
	enum tda18271_role role;

	/* use i2c gate provided by analog or digital demod */
	enum tda18271_i2c_gate gate;

	/* output options that can be disabled */
	enum tda18271_output_options output_opt;

	/* some i2c providers can't write all 39 registers at once */
	enum tda18271_small_i2c small_i2c;

	/* force rf tracking filter calibration on startup */
	unsigned int rf_cal_on_startup:1;

	/* prevent any register access during attach(),
	 * delaying both IR & RF calibration until init()
	 * module option 'cal' overrides this delay */
	unsigned int delay_cal:1;

	/* interface to saa713x / tda829x */
	unsigned int config;
};

Annotation

Implementation Notes