drivers/media/i2c/ov5675.c

File Facts

System

Linux kernel

Corpus path

drivers/media/i2c/ov5675.c

Extension

.c

Size

32067 bytes

Lines

1387

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/acpi.h
• linux/clk.h
• linux/delay.h
• linux/gpio/consumer.h
• linux/i2c.h
• linux/mod_devicetable.h
• linux/module.h
• linux/pm_runtime.h
• linux/regulator/consumer.h
• linux/unaligned.h
• media/v4l2-ctrls.h
• media/v4l2-device.h
• media/v4l2-fwnode.h

Detected Declarations

• struct ov5675_reg
• struct ov5675_reg_list
• struct ov5675_link_freq_config
• struct ov5675_mode
• struct ov5675
• function to_pixel_rate
• function to_pixels_per_line
• function ov5675_read_reg
• function ov5675_write_reg
• function ov5675_write_reg_list
• function ov5675_update_digital_gain
• function ov5675_test_pattern
• function ov5675_set_ctrl_hflip
• function ov5675_set_ctrl_vflip
• function ov5675_set_ctrl
• function ov5675_init_controls
• function ov5675_update_pad_format
• function ov5675_identify_module
• function ov5675_start_streaming
• function ov5675_stop_streaming
• function ov5675_set_stream
• function ov5675_power_off
• function ov5675_power_on
• function ov5675_set_format
• function ov5675_get_format
• function ov5675_get_selection
• function ov5675_enum_mbus_code
• function ov5675_enum_frame_size
• function ov5675_open
• function ov5675_get_hwcfg
• function ov5675_remove
• function ov5675_probe

Annotated Snippet

struct ov5675_reg {
	u16 address;
	u8 val;
};

struct ov5675_reg_list {
	u32 num_of_regs;
	const struct ov5675_reg *regs;
};

struct ov5675_link_freq_config {
	const struct ov5675_reg_list reg_list;
};

struct ov5675_mode {
	/* Frame width in pixels */
	u32 width;

	/* Frame height in pixels */
	u32 height;

	/* Horizontal timining size */
	u32 hts;

	/* Default vertical timining size */
	u32 vts_def;

	/* Min vertical timining size */
	u32 vts_min;

	/* Link frequency needed for this resolution */
	u32 link_freq_index;

	/* Sensor register settings for this resolution */
	const struct ov5675_reg_list reg_list;
};

static const struct ov5675_reg mipi_data_rate_900mbps[] = {
	{0x0103, 0x01},
	{0x0100, 0x00},
	{0x0300, 0x04},
	{0x0302, 0x8d},
	{0x0303, 0x00},
	{0x030d, 0x26},
};

static const struct ov5675_reg mode_2592x1944_regs[] = {
	{0x3002, 0x21},
	{0x3107, 0x23},
	{0x3501, 0x20},
	{0x3503, 0x0c},
	{0x3508, 0x03},
	{0x3509, 0x00},
	{0x3600, 0x66},
	{0x3602, 0x30},
	{0x3610, 0xa5},
	{0x3612, 0x93},
	{0x3620, 0x80},
	{0x3642, 0x0e},
	{0x3661, 0x00},
	{0x3662, 0x10},
	{0x3664, 0xf3},
	{0x3665, 0x9e},
	{0x3667, 0xa5},
	{0x366e, 0x55},
	{0x366f, 0x55},
	{0x3670, 0x11},
	{0x3671, 0x11},
	{0x3672, 0x11},
	{0x3673, 0x11},
	{0x3714, 0x24},
	{0x371a, 0x3e},
	{0x3733, 0x10},
	{0x3734, 0x00},
	{0x373d, 0x24},
	{0x3764, 0x20},
	{0x3765, 0x20},
	{0x3766, 0x12},
	{0x37a1, 0x14},
	{0x37a8, 0x1c},
	{0x37ab, 0x0f},
	{0x37c2, 0x04},
	{0x37cb, 0x00},
	{0x37cc, 0x00},
	{0x37cd, 0x00},
	{0x37ce, 0x00},
	{0x37d8, 0x02},
	{0x37d9, 0x08},
	{0x37dc, 0x04},
	{0x3800, 0x00},

Annotation

• Immediate include surface: `linux/acpi.h`, `linux/clk.h`, `linux/delay.h`, `linux/gpio/consumer.h`, `linux/i2c.h`, `linux/mod_devicetable.h`, `linux/module.h`, `linux/pm_runtime.h`.
• Detected declarations: `struct ov5675_reg`, `struct ov5675_reg_list`, `struct ov5675_link_freq_config`, `struct ov5675_mode`, `struct ov5675`, `function to_pixel_rate`, `function to_pixels_per_line`, `function ov5675_read_reg`, `function ov5675_write_reg`, `function ov5675_write_reg_list`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.