drivers/media/usb/gspca/vc032x.c

File Facts

System

Linux kernel

Corpus path

drivers/media/usb/gspca/vc032x.c

Extension

.c

Size

113154 bytes

Lines

3839

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
• struct sensor_info
• enum bridges
• enum sensors
• function reg_r_i
• function reg_r
• function reg_w_i
• function reg_w
• function read_sensor_register
• function vc032x_probe_sensor
• function put_tab_to_reg
• function usb_exchange
• function sd_config
• function sd_init
• function setbrightness
• function setcontrast
• function setcolors
• function sethvflip
• function setlightfreq
• function setsharpness
• function setgain
• function setexposure
• function setautogain
• function setgamma
• function setbacklight
• function setwb
• function sd_start
• function sd_stopN
• function sd_stop0
• 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 */
	struct { /* hvflip cluster */
		struct v4l2_ctrl *hflip;
		struct v4l2_ctrl *vflip;
	};

	u8 image_offset;

	u8 bridge;
	u8 sensor;
	u8 flags;
#define FL_SAMSUNG 0x01		/* SamsungQ1 (2 sensors) */
#define FL_HFLIP 0x02		/* mirrored by default */
#define FL_VFLIP 0x04		/* vertical flipped by default */
};
enum bridges {
	BRIDGE_VC0321,
	BRIDGE_VC0323,
};
enum sensors {
	SENSOR_HV7131R,
	SENSOR_MI0360,
	SENSOR_MI1310_SOC,
	SENSOR_MI1320,
	SENSOR_MI1320_SOC,
	SENSOR_OV7660,
	SENSOR_OV7670,
	SENSOR_PO1200,
	SENSOR_PO3130NC,
	SENSOR_POxxxx,
	NSENSORS
};


static const struct v4l2_pix_format vc0321_mode[] = {
	{320, 240, V4L2_PIX_FMT_YVYU, V4L2_FIELD_NONE,
		.bytesperline = 320 * 2,
		.sizeimage = 320 * 240 * 2,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_YVYU, V4L2_FIELD_NONE,
		.bytesperline = 640 * 2,
		.sizeimage = 640 * 480 * 2,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};
static const struct v4l2_pix_format vc0323_mode[] = {
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0},
	{1280, 960, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, /* mi1310_soc only */
		.bytesperline = 1280,
		.sizeimage = 1280 * 960 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 2},
};
static const struct v4l2_pix_format bi_mode[] = {
	{320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
		.bytesperline = 320 * 2,
		.sizeimage = 320 * 240 * 2,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 2},
	{640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
		.bytesperline = 640 * 2,
		.sizeimage = 640 * 480 * 2,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1},
	{1280, 1024, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
		.bytesperline = 1280 * 2,
		.sizeimage = 1280 * 1024 * 2,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0},
};
static const struct v4l2_pix_format svga_mode[] = {
	{800, 600, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 800,
		.sizeimage = 800 * 600 * 1 / 4 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0},
};

/* OV7660/7670 registers */

Annotation

• Immediate include surface: `gspca.h`.
• Detected declarations: `struct sd`, `struct sensor_info`, `enum bridges`, `enum sensors`, `function reg_r_i`, `function reg_r`, `function reg_w_i`, `function reg_w`, `function read_sensor_register`, `function vc032x_probe_sensor`.
• 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.