linux/drivers/clk/sunxi/clk-factors.h
Stephen Boyd 9919d44ff2 clk: sunxi: Use CLK_IS_CRITICAL flag for critical clks
We'd like to privatize __clk_get(), but the sunxi clk driver is
calling this function to keep a reference held on the clk and
call clk_prepare_enable() on it. We support this design in the
clk core now with the CLK_IS_CRITICAL flag, so let's just use
that instead.

Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2018-01-04 15:13:24 -08:00

66 lines
1.4 KiB
C

/* 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