linux/drivers/clk/sunxi/clk-factors.h
Hans de Goede 7c74c220e9 clk: sunxi: Give sunxi_factors_register a registers parameter
Before this commit sunxi_factors_register uses of_iomap(node, 0) to get
the clk registers. The sun6i prcm has factor clocks, for which we want to
use sunxi_factors_register, but of_iomap(node, 0) does not work for the prcm
factor clocks, because the prcm uses the mfd framework, so the registers
are not part of the dt-node, instead they are added to the platform_device,
as platform_device resources.

This commit makes getting the registers the callers duty, so that
sunxi_factors_register can be used with mfd instantiated platform device too.

While at it also add error checking to the of_iomap calls.

This commit also drops the __init function from sunxi_factors_register since
platform driver probe functions are not __init.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2014-12-21 23:51:37 +01:00

45 lines
886 B
C

#ifndef __MACH_SUNXI_CLK_FACTORS_H
#define __MACH_SUNXI_CLK_FACTORS_H
#include <linux/clk-provider.h>
#include <linux/clkdev.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_data {
int enable;
int mux;
int muxmask;
struct clk_factors_config *table;
void (*getter) (u32 *rate, u32 parent_rate, u8 *n, u8 *k, u8 *m, u8 *p);
const char *name;
};
struct clk_factors {
struct clk_hw hw;
void __iomem *reg;
struct clk_factors_config *config;
void (*get_factors) (u32 *rate, u32 parent, u8 *n, u8 *k, u8 *m, u8 *p);
spinlock_t *lock;
};
struct clk *sunxi_factors_register(struct device_node *node,
const struct factors_data *data,
spinlock_t *lock,
void __iomem *reg);
#endif