drivers/clk/meson/clk-regmap.h

Source file repositories/reference/linux-study-clean/drivers/clk/meson/clk-regmap.h

File Facts

System
Linux kernel
Corpus path
drivers/clk/meson/clk-regmap.h
Extension
.h
Size
3153 bytes
Lines
122
Domain
Driver Families
Bucket
drivers/clk
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 clk_regmap {
	struct clk_hw	hw;
	struct regmap	*map;
	void		*data;
};

static inline struct clk_regmap *to_clk_regmap(struct clk_hw *hw)
{
	return container_of(hw, struct clk_regmap, hw);
}

/* clk_regmap init op to get and cache regmap from the controllers */
int clk_regmap_init(struct clk_hw *hw);

/**
 * struct clk_regmap_gate_data - regmap backed gate specific data
 *
 * @offset:	offset of the register controlling gate
 * @bit_idx:	single bit controlling gate
 * @flags:	hardware-specific flags
 *
 * Flags:
 * Same as clk_gate except CLK_GATE_HIWORD_MASK which is ignored
 */
struct clk_regmap_gate_data {
	unsigned int	offset;
	u8		bit_idx;
	u8		flags;
};

static inline struct clk_regmap_gate_data *
clk_get_regmap_gate_data(struct clk_regmap *clk)
{
	return (struct clk_regmap_gate_data *)clk->data;
}

extern const struct clk_ops clk_regmap_gate_ops;
extern const struct clk_ops clk_regmap_gate_ro_ops;

/**
 * struct clk_regmap_div_data - regmap backed adjustable divider specific data
 *
 * @offset:	offset of the register controlling the divider
 * @shift:	shift to the divider bit field
 * @width:	width of the divider bit field
 * @table:	array of value/divider pairs, last entry should have div = 0
 *
 * Flags:
 * Same as clk_divider except CLK_DIVIDER_HIWORD_MASK which is ignored
 */
struct clk_regmap_div_data {
	unsigned int	offset;
	u8		shift;
	u8		width;
	u8		flags;
	const struct clk_div_table	*table;
};

static inline struct clk_regmap_div_data *
clk_get_regmap_div_data(struct clk_regmap *clk)
{
	return (struct clk_regmap_div_data *)clk->data;
}

extern const struct clk_ops clk_regmap_divider_ops;
extern const struct clk_ops clk_regmap_divider_ro_ops;

/**
 * struct clk_regmap_mux_data - regmap backed multiplexer clock specific data
 *
 * @hw:		handle between common and hardware-specific interfaces
 * @offset:	offset of theregister controlling multiplexer
 * @table:	array of parent indexed register values
 * @shift:	shift to multiplexer bit field
 * @mask:	mask of mutliplexer bit field
 * @flags:	hardware-specific flags
 *
 * Flags:
 * Same as clk_divider except CLK_MUX_HIWORD_MASK which is ignored
 */
struct clk_regmap_mux_data {
	unsigned int	offset;
	u32		*table;
	u32		mask;
	u8		shift;
	u8		flags;
};

static inline struct clk_regmap_mux_data *
clk_get_regmap_mux_data(struct clk_regmap *clk)

Annotation

Implementation Notes