drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c

Extension

.c

Size

23599 bytes

Lines

916

Domain

Driver Families

Bucket

drivers/gpu

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/bitfield.h
• linux/bits.h
• linux/clk.h
• linux/delay.h
• linux/math.h
• linux/media-bus-format.h
• linux/mfd/syscon.h
• linux/module.h
• linux/of.h
• linux/phy/phy.h
• linux/phy/phy-mipi-dphy.h
• linux/platform_device.h
• linux/regmap.h
• drm/bridge/dw_mipi_dsi.h
• drm/drm_bridge.h
• drm/drm_mipi_dsi.h
• drm/drm_modes.h

Detected Declarations

• struct imx93_dsi
• struct dphy_pll_cfg
• struct dphy_pll_vco_prop
• struct dphy_pll_hsfreqrange
• struct hstt
• function dphy_pll_write
• function data_rate_to_fout
• function dphy_pll_get_configure_from_opts
• function dphy_pll_clear_shadow
• function dphy_pll_get_cfgclkrange
• function dphy_pll_get_hsfreqrange
• function dphy_pll_get_vco
• function dphy_pll_get_prop
• function dphy_pll_update
• function dphy_pll_configure
• function dphy_pll_clear_reg
• function dphy_pll_init
• function dphy_pll_uninit
• function dphy_pll_power_off
• function imx93_dsi_get_phy_configure_opts
• function imx93_dsi_validate_mode
• function imx93_dsi_validate_phy
• function imx93_dsi_mode_valid
• function imx93_dsi_mode_fixup
• function imx93_dsi_phy_init
• function imx93_dsi_phy_power_off
• function imx93_dsi_get_lane_mbps
• function imx93_dsi_phy_get_timing
• function imx93_dsi_host_attach
• function imx93_dsi_probe
• function imx93_dsi_remove

Annotated Snippet

struct imx93_dsi {
	struct device *dev;
	struct regmap *regmap;
	struct clk *clk_pixel;
	struct clk *clk_ref;
	struct clk *clk_cfg;
	struct dw_mipi_dsi *dmd;
	struct dw_mipi_dsi_plat_data pdata;
	union phy_configure_opts phy_cfg;
	unsigned long ref_clk_rate;
	u32 format;
};

struct dphy_pll_cfg {
	u32 m;	/* PLL Feedback Multiplication Ratio */
	u32 n;	/* PLL Input Frequency Division Ratio */
};

struct dphy_pll_vco_prop {
	unsigned long max_fout;
	u8 vco_cntl;
	u8 prop_cntl;
};

struct dphy_pll_hsfreqrange {
	unsigned long max_mbps;
	u8 hsfreqrange;
};

/* DPHY Databook Table 3-13 Charge-pump Programmability */
static const struct dphy_pll_vco_prop vco_prop_map[] = {
	{   55, 0x3f, 0x0d },
	{   82, 0x37, 0x0d },
	{  110, 0x2f, 0x0d },
	{  165, 0x27, 0x0d },
	{  220, 0x1f, 0x0d },
	{  330, 0x17, 0x0d },
	{  440, 0x0f, 0x0d },
	{  660, 0x07, 0x0d },
	{ 1149, 0x03, 0x0d },
	{ 1152, 0x01, 0x0d },
	{ 1250, 0x01, 0x0e },
};

/* DPHY Databook Table 5-7 Frequency Ranges and Defaults */
static const struct dphy_pll_hsfreqrange hsfreqrange_map[] = {
	{   89, 0x00 },
	{   99, 0x10 },
	{  109, 0x20 },
	{  119, 0x30 },
	{  129, 0x01 },
	{  139, 0x11 },
	{  149, 0x21 },
	{  159, 0x31 },
	{  169, 0x02 },
	{  179, 0x12 },
	{  189, 0x22 },
	{  204, 0x32 },
	{  219, 0x03 },
	{  234, 0x13 },
	{  249, 0x23 },
	{  274, 0x33 },
	{  299, 0x04 },
	{  324, 0x14 },
	{  349, 0x25 },
	{  399, 0x35 },
	{  449, 0x05 },
	{  499, 0x16 },
	{  549, 0x26 },
	{  599, 0x37 },
	{  649, 0x07 },
	{  699, 0x18 },
	{  749, 0x28 },
	{  799, 0x39 },
	{  849, 0x09 },
	{  899, 0x19 },
	{  949, 0x29 },
	{  999, 0x3a },
	{ 1049, 0x0a },
	{ 1099, 0x1a },
	{ 1149, 0x2a },
	{ 1199, 0x3b },
	{ 1249, 0x0b },
	{ 1299, 0x1b },
	{ 1349, 0x2b },
	{ 1399, 0x3c },
	{ 1449, 0x0c },
	{ 1499, 0x1c },
	{ 1549, 0x2c },
	{ 1599, 0x3d },

Annotation

• Immediate include surface: `linux/bitfield.h`, `linux/bits.h`, `linux/clk.h`, `linux/delay.h`, `linux/math.h`, `linux/media-bus-format.h`, `linux/mfd/syscon.h`, `linux/module.h`.
• Detected declarations: `struct imx93_dsi`, `struct dphy_pll_cfg`, `struct dphy_pll_vco_prop`, `struct dphy_pll_hsfreqrange`, `struct hstt`, `function dphy_pll_write`, `function data_rate_to_fout`, `function dphy_pll_get_configure_from_opts`, `function dphy_pll_clear_shadow`, `function dphy_pll_get_cfgclkrange`.
• Atlas domain: Driver Families / drivers/gpu.
• 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.