LXR linux/drivers/clk/sunxi/clk-factors.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __MACH_SUNXI_CLK_FACTORS_H
   3#define __MACH_SUNXI_CLK_FACTORS_H
   4
   5#include <linux/clk-provider.h>
   6#include <linux/spinlock.h>
   7
   8#define SUNXI_FACTORS_NOT_APPLICABLE    (0)
   9
  10struct clk_factors_config {
  11        u8 nshift;
  12        u8 nwidth;
  13        u8 kshift;
  14        u8 kwidth;
  15        u8 mshift;
  16        u8 mwidth;
  17        u8 pshift;
  18        u8 pwidth;
  19        u8 n_start;
  20};
  21
  22struct factors_request {
  23        unsigned long rate;
  24        unsigned long parent_rate;
  25        u8 parent_index;
  26        u8 n;
  27        u8 k;
  28        u8 m;
  29        u8 p;
  30};
  31
  32struct factors_data {
  33        int enable;
  34        int mux;
  35        int muxmask;
  36        const struct clk_factors_config *table;
  37        void (*getter)(struct factors_request *req);
  38        void (*recalc)(struct factors_request *req);
  39        const char *name;
  40};
  41
  42struct clk_factors {
  43        struct clk_hw hw;
  44        void __iomem *reg;
  45        const struct clk_factors_config *config;
  46        void (*get_factors)(struct factors_request *req);
  47        void (*recalc)(struct factors_request *req);
  48        spinlock_t *lock;
  49        /* for cleanup */
  50        struct clk_mux *mux;
  51        struct clk_gate *gate;
  52};
  53
  54struct clk *sunxi_factors_register(struct device_node *node,
  55                                   const struct factors_data *data,
  56                                   spinlock_t *lock,
  57                                   void __iomem *reg);
  58struct clk *sunxi_factors_register_critical(struct device_node *node,
  59                                            const struct factors_data *data,
  60                                            spinlock_t *lock,
  61                                            void __iomem *reg);
  62
  63void sunxi_factors_unregister(struct device_node *node, struct clk *clk);
  64
  65#endif
  66