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

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

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/ti/omap3isp/ispccdc.h
Extension
.h
Size
4811 bytes
Lines
175
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 ispccdc_fpc {
	void *addr;
	dma_addr_t dma;
	unsigned int fpnum;
};

enum ispccdc_lsc_state {
	LSC_STATE_STOPPED = 0,
	LSC_STATE_STOPPING = 1,
	LSC_STATE_RUNNING = 2,
	LSC_STATE_RECONFIG = 3,
};

struct ispccdc_lsc_config_req {
	struct list_head list;
	struct omap3isp_ccdc_lsc_config config;
	unsigned char enable;

	struct {
		void *addr;
		dma_addr_t dma;
		struct sg_table sgt;
	} table;
};

/*
 * ispccdc_lsc - CCDC LSC parameters
 */
struct ispccdc_lsc {
	enum ispccdc_lsc_state state;
	struct work_struct table_work;

	/* LSC queue of configurations */
	spinlock_t req_lock;
	struct ispccdc_lsc_config_req *request;	/* requested configuration */
	struct ispccdc_lsc_config_req *active;	/* active configuration */
	struct list_head free_queue;	/* configurations for freeing */
};

#define CCDC_STOP_NOT_REQUESTED		0x00
#define CCDC_STOP_REQUEST		0x01
#define CCDC_STOP_EXECUTED		(0x02 | CCDC_STOP_REQUEST)
#define CCDC_STOP_CCDC_FINISHED		0x04
#define CCDC_STOP_LSC_FINISHED		0x08
#define CCDC_STOP_FINISHED		\
	(CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)

#define CCDC_EVENT_VD1			0x10
#define CCDC_EVENT_VD0			0x20
#define CCDC_EVENT_LSC_DONE		0x40

/* Sink and source CCDC pads */
#define CCDC_PAD_SINK			0
#define CCDC_PAD_SOURCE_OF		1
#define CCDC_PAD_SOURCE_VP		2
#define CCDC_PADS_NUM			3

#define CCDC_FIELD_TOP			1
#define CCDC_FIELD_BOTTOM		2
#define CCDC_FIELD_BOTH			3

/*
 * struct isp_ccdc_device - Structure for the CCDC module to store its own
 *			    information
 * @subdev: V4L2 subdevice
 * @pads: Sink and source media entity pads
 * @formats: Active video formats
 * @crop: Active crop rectangle on the OF source pad
 * @input: Active input
 * @output: Active outputs
 * @video_out: Output video node
 * @alaw: A-law compression enabled (1) or disabled (0)
 * @lpf: Low pass filter enabled (1) or disabled (0)
 * @obclamp: Optical-black clamp enabled (1) or disabled (0)
 * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
 * @blcomp: Black level compensation configuration
 * @clamp: Optical-black or digital clamp configuration
 * @fpc: Faulty pixels correction configuration
 * @lsc: Lens shading compensation configuration
 * @update: Bitmask of controls to update during the next interrupt
 * @shadow_update: Controls update in progress by userspace
 * @bt656: Whether the input interface uses BT.656 synchronization
 * @fields: The fields (CCDC_FIELD_*) stored in the current buffer
 * @underrun: A buffer underrun occurred and a new buffer has been queued
 * @state: Streaming state
 * @lock: Serializes shadow_update with interrupt handler
 * @wait: Wait queue used to stop the module
 * @stopping: Stopping state
 * @running: Is the CCDC hardware running
 * @ioctl_lock: Serializes ioctl calls and LSC requests freeing

Annotation

Implementation Notes