drivers/media/i2c/imx415.c

Source file repositories/reference/linux-study-clean/drivers/media/i2c/imx415.c

File Facts

System: Linux kernel
Corpus path: drivers/media/i2c/imx415.c
Extension: .c
Size: 41638 bytes
Lines: 1483
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.
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/clk.h
linux/gpio/consumer.h
linux/i2c.h
linux/module.h
linux/of.h
linux/pm_runtime.h
linux/regmap.h
linux/regulator/consumer.h
linux/slab.h
linux/videodev2.h
media/v4l2-cci.h
media/v4l2-ctrls.h
media/v4l2-fwnode.h
media/v4l2-subdev.h

Detected Declarations

struct imx415_clk_params
struct imx415_mode_reg_list
struct imx415_mode
struct imx415
function imx415_set_testpattern
function imx415_s_ctrl
function imx415_ctrls_init
function imx415_set_mode
function imx415_setup
function imx415_wakeup
function imx415_stream_on
function imx415_stream_off
function imx415_s_stream
function imx415_enum_mbus_code
function imx415_enum_frame_size
function imx415_set_format
function imx415_get_selection
function imx415_init_state
function imx415_subdev_init
function imx415_subdev_cleanup
function imx415_power_on
function imx415_power_off
function imx415_identify_model
function imx415_check_inck
function imx415_parse_hw_config
function imx415_probe
function imx415_remove
function imx415_runtime_resume
function imx415_runtime_suspend

Annotated Snippet

struct imx415_clk_params {
	u64 lane_rate;
	u64 inck;
	struct cci_reg_sequence regs[IMX415_NUM_CLK_PARAM_REGS];
};

/* INCK Settings - includes all lane rate and INCK dependent registers */
static const struct imx415_clk_params imx415_clk_params[] = {
	{
		.lane_rate = 594000000UL,
		.inck = 27000000,
		.regs[0] = { IMX415_BCWAIT_TIME, 0x05D },
		.regs[1] = { IMX415_CPWAIT_TIME, 0x042 },
		.regs[2] = { IMX415_SYS_MODE, 0x7 },
		.regs[3] = { IMX415_INCKSEL1, 0x00 },
		.regs[4] = { IMX415_INCKSEL2, 0x23 },
		.regs[5] = { IMX415_INCKSEL3, 0x084 },
		.regs[6] = { IMX415_INCKSEL4, 0x0E7 },
		.regs[7] = { IMX415_INCKSEL5, 0x23 },
		.regs[8] = { IMX415_INCKSEL6, 0x0 },
		.regs[9] = { IMX415_INCKSEL7, 0x1 },
		.regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 },
	},
	{
		.lane_rate = 594000000UL,
		.inck = 37125000,
		.regs[0] = { IMX415_BCWAIT_TIME, 0x07F },
		.regs[1] = { IMX415_CPWAIT_TIME, 0x05B },
		.regs[2] = { IMX415_SYS_MODE, 0x7 },
		.regs[3] = { IMX415_INCKSEL1, 0x00 },
		.regs[4] = { IMX415_INCKSEL2, 0x24 },
		.regs[5] = { IMX415_INCKSEL3, 0x080 },
		.regs[6] = { IMX415_INCKSEL4, 0x0E0 },
		.regs[7] = { IMX415_INCKSEL5, 0x24 },
		.regs[8] = { IMX415_INCKSEL6, 0x0 },
		.regs[9] = { IMX415_INCKSEL7, 0x1 },
		.regs[10] = { IMX415_TXCLKESC_FREQ, 0x0984 },
	},
	{
		.lane_rate = 594000000UL,
		.inck = 74250000,
		.regs[0] = { IMX415_BCWAIT_TIME, 0x0FF },
		.regs[1] = { IMX415_CPWAIT_TIME, 0x0B6 },
		.regs[2] = { IMX415_SYS_MODE, 0x7 },
		.regs[3] = { IMX415_INCKSEL1, 0x00 },
		.regs[4] = { IMX415_INCKSEL2, 0x28 },
		.regs[5] = { IMX415_INCKSEL3, 0x080 },
		.regs[6] = { IMX415_INCKSEL4, 0x0E0 },
		.regs[7] = { IMX415_INCKSEL5, 0x28 },
		.regs[8] = { IMX415_INCKSEL6, 0x0 },
		.regs[9] = { IMX415_INCKSEL7, 0x1 },
		.regs[10] = { IMX415_TXCLKESC_FREQ, 0x1290 },
	},
	{
		.lane_rate = 720000000UL,
		.inck = 24000000,
		.regs[0] = { IMX415_BCWAIT_TIME, 0x054 },
		.regs[1] = { IMX415_CPWAIT_TIME, 0x03B },
		.regs[2] = { IMX415_SYS_MODE, 0x9 },
		.regs[3] = { IMX415_INCKSEL1, 0x00 },
		.regs[4] = { IMX415_INCKSEL2, 0x23 },
		.regs[5] = { IMX415_INCKSEL3, 0x0B4 },
		.regs[6] = { IMX415_INCKSEL4, 0x0FC },
		.regs[7] = { IMX415_INCKSEL5, 0x23 },
		.regs[8] = { IMX415_INCKSEL6, 0x0 },
		.regs[9] = { IMX415_INCKSEL7, 0x1 },
		.regs[10] = { IMX415_TXCLKESC_FREQ, 0x0600 },
	},
	{
		.lane_rate = 720000000UL,
		.inck = 72000000,
		.regs[0] = { IMX415_BCWAIT_TIME, 0x0F8 },
		.regs[1] = { IMX415_CPWAIT_TIME, 0x0B0 },
		.regs[2] = { IMX415_SYS_MODE, 0x9 },
		.regs[3] = { IMX415_INCKSEL1, 0x00 },
		.regs[4] = { IMX415_INCKSEL2, 0x28 },
		.regs[5] = { IMX415_INCKSEL3, 0x0A0 },
		.regs[6] = { IMX415_INCKSEL4, 0x0E0 },
		.regs[7] = { IMX415_INCKSEL5, 0x28 },
		.regs[8] = { IMX415_INCKSEL6, 0x0 },
		.regs[9] = { IMX415_INCKSEL7, 0x1 },
		.regs[10] = { IMX415_TXCLKESC_FREQ, 0x1200 },
	},
	{
		.lane_rate = 891000000UL,
		.inck = 27000000,
		.regs[0] = { IMX415_BCWAIT_TIME, 0x05D },
		.regs[1] = { IMX415_CPWAIT_TIME, 0x042 },
		.regs[2] = { IMX415_SYS_MODE, 0x5 },
		.regs[3] = { IMX415_INCKSEL1, 0x00 },

Annotation

Immediate include surface: `linux/clk.h`, `linux/gpio/consumer.h`, `linux/i2c.h`, `linux/module.h`, `linux/of.h`, `linux/pm_runtime.h`, `linux/regmap.h`, `linux/regulator/consumer.h`.
Detected declarations: `struct imx415_clk_params`, `struct imx415_mode_reg_list`, `struct imx415_mode`, `struct imx415`, `function imx415_set_testpattern`, `function imx415_s_ctrl`, `function imx415_ctrls_init`, `function imx415_set_mode`, `function imx415_setup`, `function imx415_wakeup`.
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.