xref: /linux/drivers/clk/sunxi/clk-factors.h (revision 9919d44f)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MACH_SUNXI_CLK_FACTORS_H
#define __MACH_SUNXI_CLK_FACTORS_H

#include <linux/clk-provider.h>
#include <linux/spinlock.h>

#define SUNXI_FACTORS_NOT_APPLICABLE	(0)

struct clk_factors_config {
	u8 nshift;
	u8 nwidth;
	u8 kshift;
	u8 kwidth;
	u8 mshift;
	u8 mwidth;
	u8 pshift;
	u8 pwidth;
	u8 n_start;
};

struct factors_request {
	unsigned long rate;
	unsigned long parent_rate;
	u8 parent_index;
	u8 n;
	u8 k;
	u8 m;
	u8 p;
};

struct factors_data {
	int enable;
	int mux;
	int muxmask;
	const struct clk_factors_config *table;
	void (*getter)(struct factors_request *req);
	void (*recalc)(struct factors_request *req);
	const char *name;
};

struct clk_factors {
	struct clk_hw hw;
	void __iomem *reg;
	const struct clk_factors_config *config;
	void (*get_factors)(struct factors_request *req);
	void (*recalc)(struct factors_request *req);
	spinlock_t *lock;
	/* for cleanup */
	struct clk_mux *mux;
	struct clk_gate *gate;
};

struct clk *sunxi_factors_register(struct device_node *node,
				   const struct factors_data *data,
				   spinlock_t *lock,
				   void __iomem *reg);
struct clk *sunxi_factors_register_critical(struct device_node *node,
					    const struct factors_data *data,
					    spinlock_t *lock,
					    void __iomem *reg);

void sunxi_factors_unregister(struct device_node *node, struct clk *clk);

#endif