drivers/media/platform/samsung/exynos4-is/fimc-lite.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/samsung/exynos4-is/fimc-lite.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/samsung/exynos4-is/fimc-lite.h
Extension
.h
Size
6209 bytes
Lines
222
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 flite_drvdata {
	unsigned short max_width;
	unsigned short max_height;
	unsigned short out_width_align;
	unsigned short win_hor_offs_align;
	unsigned short out_hor_offs_align;
	unsigned short max_dma_bufs;
	unsigned short num_instances;
};

struct fimc_lite_events {
	unsigned int data_overflow;
};

#define FLITE_MAX_PLANES	1

/**
 * struct flite_frame - source/target frame properties
 * @f_width: full pixel width
 * @f_height: full pixel height
 * @rect: crop/composition rectangle
 * @fmt: pointer to pixel format description data structure
 */
struct flite_frame {
	u16 f_width;
	u16 f_height;
	struct v4l2_rect rect;
	const struct fimc_fmt *fmt;
};

/**
 * struct flite_buffer - video buffer structure
 * @vb:    vb2 buffer
 * @list:  list head for the buffers queue
 * @addr: DMA buffer start address
 * @index: DMA start address register's index
 */
struct flite_buffer {
	struct vb2_v4l2_buffer vb;
	struct list_head list;
	dma_addr_t addr;
	unsigned short index;
};

/**
 * struct fimc_lite - fimc lite structure
 * @pdev: pointer to FIMC-LITE platform device
 * @dd: SoC specific driver data structure
 * @ve: exynos video device entity structure
 * @v4l2_dev: pointer to top the level v4l2_device
 * @fh: v4l2 file handle
 * @subdev: FIMC-LITE subdev
 * @vd_pad: media (sink) pad for the capture video node
 * @subdev_pads: the subdev media pads
 * @sensor: sensor subdev attached to FIMC-LITE directly or through MIPI-CSIS
 * @ctrl_handler: v4l2 control handler
 * @test_pattern: test pattern controls
 * @index: FIMC-LITE platform device index
 * @slock: spinlock protecting this data structure and the hw registers
 * @lock: mutex serializing video device and the subdev operations
 * @clock: FIMC-LITE gate clock
 * @regs: memory mapped io registers
 * @irq_queue: interrupt handler waitqueue
 * @payload: image size in bytes (w x h x bpp)
 * @inp_frame: camera input frame structure
 * @out_frame: DMA output frame structure
 * @out_path: output data path (DMA or FIFO)
 * @source_subdev_grp_id: source subdev group id
 * @state: driver state flags
 * @pending_buf_q: pending buffers queue head
 * @active_buf_q: the queue head of buffers scheduled in hardware
 * @vb_queue: vb2 buffers queue
 * @buf_index: helps to keep track of the DMA start address register index
 * @frame_count: the captured frames counter
 * @reqbufs_count: the number of buffers requested with REQBUFS ioctl
 * @events: event info
 * @streaming: is streaming in progress?
 */
struct fimc_lite {
	struct platform_device	*pdev;
	struct flite_drvdata	*dd;
	struct exynos_video_entity ve;
	struct v4l2_device	*v4l2_dev;
	struct v4l2_fh		fh;
	struct v4l2_subdev	subdev;
	struct media_pad	vd_pad;
	struct media_pad	subdev_pads[FLITE_SD_PADS_NUM];
	struct v4l2_subdev	*sensor;
	struct v4l2_ctrl_handler ctrl_handler;
	struct v4l2_ctrl	*test_pattern;

Annotation

Implementation Notes