drivers/gpu/drm/omapdrm/dss/dss.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/omapdrm/dss/dss.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/omapdrm/dss/dss.h
Extension
.h
Size
14988 bytes
Lines
549
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct dss_pll_clock_info {
	/* rates that we get with dividers below */
	unsigned long fint;
	unsigned long clkdco;
	unsigned long clkout[DSS_PLL_MAX_HSDIVS];

	/* dividers */
	u16 n;
	u16 m;
	u32 mf;
	u16 mX[DSS_PLL_MAX_HSDIVS];
	u16 sd;
};

struct dss_pll_ops {
	int (*enable)(struct dss_pll *pll);
	void (*disable)(struct dss_pll *pll);
	int (*set_config)(struct dss_pll *pll,
		const struct dss_pll_clock_info *cinfo);
};

struct dss_pll_hw {
	enum dss_pll_type type;

	unsigned int n_max;
	unsigned int m_min;
	unsigned int m_max;
	unsigned int mX_max;

	unsigned long fint_min, fint_max;
	unsigned long clkdco_min, clkdco_low, clkdco_max;

	u8 n_msb, n_lsb;
	u8 m_msb, m_lsb;
	u8 mX_msb[DSS_PLL_MAX_HSDIVS], mX_lsb[DSS_PLL_MAX_HSDIVS];

	bool has_stopmode;
	bool has_freqsel;
	bool has_selfreqdco;
	bool has_refsel;

	/* DRA7 errata i886: use high N & M to avoid jitter */
	bool errata_i886;

	/* DRA7 errata i932: retry pll lock on failure */
	bool errata_i932;
};

struct dss_pll {
	const char *name;
	enum dss_pll_id id;
	struct dss_device *dss;

	struct clk *clkin;
	struct regulator *regulator;

	void __iomem *base;

	const struct dss_pll_hw *hw;

	const struct dss_pll_ops *ops;

	struct dss_pll_clock_info cinfo;
};

/* Defines a generic omap register field */
struct dss_reg_field {
	u8 start, end;
};

struct dispc_clock_info {
	/* rates that we get with dividers below */
	unsigned long lck;
	unsigned long pck;

	/* dividers */
	u16 lck_div;
	u16 pck_div;
};

struct dss_lcd_mgr_config {
	enum dss_io_pad_mode io_pad_mode;

	bool stallmode;
	bool fifohandcheck;

	struct dispc_clock_info clock_info;

	int video_port_width;

Annotation

Implementation Notes