drivers/media/i2c/msp3400-driver.h

Source file repositories/reference/linux-study-clean/drivers/media/i2c/msp3400-driver.h

File Facts

System
Linux kernel
Corpus path
drivers/media/i2c/msp3400-driver.h
Extension
.h
Size
3694 bytes
Lines
150
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 msp_state {
	struct v4l2_subdev sd;
	struct v4l2_ctrl_handler hdl;
	int rev1, rev2;
	int ident;
	u8 has_nicam;
	u8 has_radio;
	u8 has_headphones;
	u8 has_ntsc_jp_d_k3;
	u8 has_scart2;
	u8 has_scart3;
	u8 has_scart4;
	u8 has_scart2_out;
	u8 has_scart2_out_volume;
	u8 has_i2s_conf;
	u8 has_subwoofer;
	u8 has_sound_processing;
	u8 has_virtual_dolby_surround;
	u8 has_dolby_pro_logic;
	u8 force_btsc;

	int radio;
	int opmode;
	int std;
	int mode;
	v4l2_std_id v4l2_std, detected_std;
	int nicam_on;
	int acb;
	int in_scart;
	int i2s_mode;
	int main, second;	/* sound carrier */
	int input;
	u32 route_in;
	u32 route_out;

	/* v4l2 */
	int audmode;
	int rxsubchans;

	struct {
		/* volume cluster */
		struct v4l2_ctrl *volume;
		struct v4l2_ctrl *muted;
	};

	int scan_in_progress;

	/* thread */
	struct task_struct   *kthread;
	wait_queue_head_t    wq;
	unsigned int         restart:1;
	unsigned int         watch_stereo:1;

#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
	struct media_pad pads[MSP3400_NUM_PADS];
#endif
};

static inline struct msp_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct msp_state, sd);
}

static inline struct msp_state *ctrl_to_state(struct v4l2_ctrl *ctrl)
{
	return container_of(ctrl->handler, struct msp_state, hdl);
}

/* msp3400-driver.c */
int msp_write_dem(struct i2c_client *client, int addr, int val);
int msp_write_dsp(struct i2c_client *client, int addr, int val);
int msp_read_dem(struct i2c_client *client, int addr);
int msp_read_dsp(struct i2c_client *client, int addr);
int msp_reset(struct i2c_client *client);
void msp_set_scart(struct i2c_client *client, int in, int out);
void msp_update_volume(struct msp_state *state);
int msp_sleep(struct msp_state *state, int msec);

/* msp3400-kthreads.c */
const char *msp_standard_std_name(int std);
void msp_set_audmode(struct i2c_client *client);
int msp_detect_stereo(struct i2c_client *client);
int msp3400c_thread(void *data);
int msp3410d_thread(void *data);
int msp34xxg_thread(void *data);
void msp3400c_set_mode(struct i2c_client *client, int mode);
void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2);

#endif /* MSP3400_DRIVER_H */

Annotation

Implementation Notes