drivers/clk/sunxi-ng/ccu_common.h

Source file repositories/reference/linux-study-clean/drivers/clk/sunxi-ng/ccu_common.h

File Facts

System
Linux kernel
Corpus path
drivers/clk/sunxi-ng/ccu_common.h
Extension
.h
Size
2105 bytes
Lines
87
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 ccu_common {
	void __iomem	*base;
	u16		reg;
	u16		lock_reg;
	u32		prediv;

	unsigned long	min_rate;
	unsigned long	max_rate;

	unsigned long	features;
	spinlock_t	*lock;
	struct clk_hw	hw;
};

static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
{
	return container_of(hw, struct ccu_common, hw);
}

struct sunxi_ccu_desc {
	struct ccu_common		**ccu_clks;
	unsigned long			num_ccu_clks;

	struct clk_hw_onecell_data	*hw_clks;

	const struct ccu_reset_map	*resets;
	unsigned long			num_resets;
};

void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);

bool ccu_is_better_rate(struct ccu_common *common,
			unsigned long target_rate,
			unsigned long current_rate,
			unsigned long best_rate);

struct ccu_pll_nb {
	struct notifier_block	clk_nb;
	struct ccu_common	*common;

	u32	enable;
	u32	lock;
};

#define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb)

int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb);

int devm_sunxi_ccu_probe(struct device *dev, void __iomem *reg,
			 const struct sunxi_ccu_desc *desc);
void of_sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
			const struct sunxi_ccu_desc *desc);

#endif /* _COMMON_H_ */

Annotation

Implementation Notes