drivers/media/usb/gspca/ov534_9.c

File Facts

System

Linux kernel

Corpus path

drivers/media/usb/gspca/ov534_9.c

Extension

.c

Size

41652 bytes

Lines

1822

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.

• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• gspca.h

Detected Declarations

• struct sd
• enum sensors
• enum ov361x
• function reg_w_i
• function reg_w
• function reg_r
• function sccb_check_status
• function sccb_write
• function sccb_read
• function reg_w_array
• function sccb_w_array
• function set_led
• function setbrightness
• function setcontrast
• function setautogain
• function setexposure
• function setsharpness
• function setsatur
• function setlightfreq
• function sd_config
• function sd_init
• function sd_start_ov361x
• function sd_start
• function sd_stopN
• function sd_pkt_scan
• function sd_s_ctrl
• function sd_init_controls
• function sd_probe

Annotated Snippet

struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */
	__u32 last_pts;
	u8 last_fid;

	u8 sensor;
};
enum sensors {
	SENSOR_OV965x,		/* ov9657 */
	SENSOR_OV971x,		/* ov9712 */
	SENSOR_OV562x,		/* ov5621 */
	SENSOR_OV361x,		/* ov3610 */
	NSENSORS
};

static const struct v4l2_pix_format ov965x_mode[] = {
#define QVGA_MODE 0
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG},
#define VGA_MODE 1
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG},
#define SVGA_MODE 2
	{800, 600, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 800,
		.sizeimage = 800 * 600 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG},
#define XGA_MODE 3
	{1024, 768, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 1024,
		.sizeimage = 1024 * 768 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG},
#define SXGA_MODE 4
	{1280, 1024, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 1280,
		.sizeimage = 1280 * 1024 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG},
};

static const struct v4l2_pix_format ov971x_mode[] = {
	{640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480,
		.colorspace = V4L2_COLORSPACE_SRGB
	}
};

static const struct v4l2_pix_format ov562x_mode[] = {
	{2592, 1680, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 2592,
		.sizeimage = 2592 * 1680,
		.colorspace = V4L2_COLORSPACE_SRGB
	}
};

enum ov361x {
	ov361x_2048 = 0,
	ov361x_1600,
	ov361x_1024,
	ov361x_640,
	ov361x_320,
	ov361x_160,
	ov361x_last
};

static const struct v4l2_pix_format ov361x_mode[] = {
	{0x800, 0x600, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 0x800,
		.sizeimage = 0x800 * 0x600,
		.colorspace = V4L2_COLORSPACE_SRGB},
	{1600, 1200, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 1600,
		.sizeimage = 1600 * 1200,
		.colorspace = V4L2_COLORSPACE_SRGB},
	{1024, 768, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 768,
		.sizeimage = 1024 * 768,
		.colorspace = V4L2_COLORSPACE_SRGB},
	{640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480,
		.colorspace = V4L2_COLORSPACE_SRGB},
	{320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240,
		.colorspace = V4L2_COLORSPACE_SRGB},

Annotation

• Immediate include surface: `gspca.h`.
• Detected declarations: `struct sd`, `enum sensors`, `enum ov361x`, `function reg_w_i`, `function reg_w`, `function reg_r`, `function sccb_check_status`, `function sccb_write`, `function sccb_read`, `function reg_w_array`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.