drivers/media/platform/ti/omap3isp/isppreview.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/ti/omap3isp/isppreview.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/ti/omap3isp/isppreview.h
Extension
.h
Size
4536 bytes
Lines
162
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 prev_params {
	u32 busy;
	u32 update;
	u32 features;
	struct omap3isp_prev_cfa cfa;
	struct omap3isp_prev_csup csup;
	struct omap3isp_prev_luma luma;
	struct omap3isp_prev_nf nf;
	struct omap3isp_prev_dcor dcor;
	struct omap3isp_prev_gtables gamma;
	struct omap3isp_prev_wbal wbal;
	struct omap3isp_prev_blkadj blkadj;
	struct omap3isp_prev_rgbtorgb rgb2rgb;
	struct omap3isp_prev_csc csc;
	struct omap3isp_prev_hmed hmed;
	struct omap3isp_prev_yclimit yclimit;
	u8 contrast;
	u8 brightness;
};

/* Sink and source previewer pads */
#define PREV_PAD_SINK			0
#define PREV_PAD_SOURCE			1
#define PREV_PADS_NUM			2

/*
 * struct isp_prev_device - Structure for storing ISP Preview module information
 * @subdev: V4L2 subdevice
 * @pads: Media entity pads
 * @formats: Active formats at the subdev pad
 * @crop: Active crop rectangle
 * @input: Module currently connected to the input pad
 * @output: Bitmask of the active output
 * @video_in: Input video entity
 * @video_out: Output video entity
 * @params.params : Active and shadow parameters sets
 * @params.active: Bitmask of parameters active in set 0
 * @params.lock: Parameters lock, protects params.active and params.shadow
 * @underrun: Whether the preview entity has queued buffers on the output
 * @state: Current preview pipeline state
 *
 * This structure is used to store the OMAP ISP Preview module Information.
 */
struct isp_prev_device {
	struct v4l2_subdev subdev;
	struct media_pad pads[PREV_PADS_NUM];
	struct v4l2_mbus_framefmt formats[PREV_PADS_NUM];
	struct v4l2_rect crop;

	struct v4l2_ctrl_handler ctrls;

	enum preview_input_entity input;
	unsigned int output;
	struct isp_video video_in;
	struct isp_video video_out;

	struct {
		unsigned int cfa_order;
		struct prev_params params[2];
		u32 active;
		spinlock_t lock;
	} params;

	enum isp_pipeline_stream_state state;
	wait_queue_head_t wait;
	atomic_t stopping;
};

struct isp_device;

int omap3isp_preview_init(struct isp_device *isp);
void omap3isp_preview_cleanup(struct isp_device *isp);

int omap3isp_preview_register_entities(struct isp_prev_device *prv,
				       struct v4l2_device *vdev);
void omap3isp_preview_unregister_entities(struct isp_prev_device *prv);

void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev);
void omap3isp_preview_isr(struct isp_prev_device *prev);

int omap3isp_preview_busy(struct isp_prev_device *isp_prev);

void omap3isp_preview_restore_context(struct isp_device *isp);

#endif	/* OMAP3_ISP_PREVIEW_H */

Annotation

Implementation Notes