drivers/phy/samsung/phy-exynos-mipi-video.c

Source file repositories/reference/linux-study-clean/drivers/phy/samsung/phy-exynos-mipi-video.c

File Facts

System: Linux kernel
Corpus path: drivers/phy/samsung/phy-exynos-mipi-video.c
Extension: .c
Size: 12721 bytes
Lines: 424
Domain: Driver Families
Bucket: drivers/phy
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/err.h
linux/io.h
linux/kernel.h
linux/module.h
linux/of.h
linux/phy/phy.h
linux/platform_device.h
linux/regmap.h
linux/spinlock.h
linux/soc/samsung/exynos-regs-pmu.h
linux/mfd/syscon.h

Detected Declarations

struct mipi_phy_device_desc
struct exynos_mipi_phy_desc
struct exynos_mipi_video_phy
struct video_phy_desc
enum exynos_mipi_phy_id
enum exynos_mipi_phy_regmap_id
function __set_phy_state
function exynos_mipi_video_phy_power_on
function exynos_mipi_video_phy_power_off
function exynos_mipi_video_phy_probe

Annotated Snippet

struct mipi_phy_device_desc {
	int num_phys;
	int num_regmaps;
	const char *regmap_names[EXYNOS_MIPI_REGMAPS_NUM];
	struct exynos_mipi_phy_desc {
		enum exynos_mipi_phy_id	coupled_phy_id;
		u32 enable_val;
		unsigned int enable_reg;
		enum exynos_mipi_phy_regmap_id enable_map;
		u32 resetn_val;
		unsigned int resetn_reg;
		enum exynos_mipi_phy_regmap_id resetn_map;
	} phys[EXYNOS_MIPI_PHYS_NUM];
};

static const struct mipi_phy_device_desc s5pv210_mipi_phy = {
	.num_regmaps = 1,
	.regmap_names = {"syscon"},
	.num_phys = 4,
	.phys = {
		{
			/* EXYNOS_MIPI_PHY_ID_CSIS0 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM0,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS4_MIPI_PHY_CONTROL(0),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_SRESETN,
			.resetn_reg = EXYNOS4_MIPI_PHY_CONTROL(0),
			.resetn_map = EXYNOS_MIPI_REGMAP_PMU,
		}, {
			/* EXYNOS_MIPI_PHY_ID_DSIM0 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS0,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS4_MIPI_PHY_CONTROL(0),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_MRESETN,
			.resetn_reg = EXYNOS4_MIPI_PHY_CONTROL(0),
			.resetn_map = EXYNOS_MIPI_REGMAP_PMU,
		}, {
			/* EXYNOS_MIPI_PHY_ID_CSIS1 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM1,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS4_MIPI_PHY_CONTROL(1),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_SRESETN,
			.resetn_reg = EXYNOS4_MIPI_PHY_CONTROL(1),
			.resetn_map = EXYNOS_MIPI_REGMAP_PMU,
		}, {
			/* EXYNOS_MIPI_PHY_ID_DSIM1 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS1,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS4_MIPI_PHY_CONTROL(1),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_MRESETN,
			.resetn_reg = EXYNOS4_MIPI_PHY_CONTROL(1),
			.resetn_map = EXYNOS_MIPI_REGMAP_PMU,
		},
	},
};

static const struct mipi_phy_device_desc exynos5420_mipi_phy = {
	.num_regmaps = 1,
	.regmap_names = {"syscon"},
	.num_phys = 5,
	.phys = {
		{
			/* EXYNOS_MIPI_PHY_ID_CSIS0 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM0,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(0),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_SRESETN,
			.resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(0),
			.resetn_map = EXYNOS_MIPI_REGMAP_PMU,
		}, {
			/* EXYNOS_MIPI_PHY_ID_DSIM0 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS0,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(0),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_MRESETN,
			.resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(0),
			.resetn_map = EXYNOS_MIPI_REGMAP_PMU,
		}, {
			/* EXYNOS_MIPI_PHY_ID_CSIS1 */
			.coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM1,
			.enable_val = EXYNOS4_PHY_ENABLE,
			.enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(1),
			.enable_map = EXYNOS_MIPI_REGMAP_PMU,
			.resetn_val = EXYNOS4_MIPI_PHY_SRESETN,

Annotation

Immediate include surface: `linux/err.h`, `linux/io.h`, `linux/kernel.h`, `linux/module.h`, `linux/of.h`, `linux/phy/phy.h`, `linux/platform_device.h`, `linux/regmap.h`.
Detected declarations: `struct mipi_phy_device_desc`, `struct exynos_mipi_phy_desc`, `struct exynos_mipi_video_phy`, `struct video_phy_desc`, `enum exynos_mipi_phy_id`, `enum exynos_mipi_phy_regmap_id`, `function __set_phy_state`, `function exynos_mipi_video_phy_power_on`, `function exynos_mipi_video_phy_power_off`, `function exynos_mipi_video_phy_probe`.
Atlas domain: Driver Families / drivers/phy.
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.