drivers/clk/visconti/clkc.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Toshiba Visconti clock controller
   4  *
   5  * Copyright (c) 2021 TOSHIBA CORPORATION
   6  * Copyright (c) 2021 Toshiba Electronic Devices & Storage Corporation
   7  *
   8  * Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
   9  */
  10
  11 #ifndef _VISCONTI_CLKC_H_
  12 #define _VISCONTI_CLKC_H_
  13
  14 #include <linux/mfd/syscon.h>
  15 #include <linux/clk-provider.h>
  16 #include <linux/of.h>
  17 #include <linux/of_address.h>
  18 #include <linux/delay.h>
  19 #include <linux/regmap.h>
  20 #include <linux/slab.h>
  21 #include <linux/string.h>
  22 #include <linux/io.h>
  23 #include <linux/spinlock.h>
  24
  25 #include "reset.h"
  26
  27 struct visconti_clk_provider {
  28         struct device           *dev;
  29         struct regmap           *regmap;
  30         struct clk_hw_onecell_data clk_data;
  31 };
  32
  33 struct visconti_clk_gate_table {
  34         unsigned int    id;
  35         const char      *name;
  36         const struct clk_parent_data *parent_data;
  37         u8              num_parents;
  38         u8              flags;
  39         u32             ckon_offset;
  40         u32             ckoff_offset;
  41         u8              ck_idx;
  42         unsigned int    div;
  43         u8              rs_id;
  44 };
  45
  46 struct visconti_fixed_clk {
  47         unsigned int    id;
  48         const char      *name;
  49         const char      *parent;
  50         unsigned long   flag;
  51         unsigned int    mult;
  52         unsigned int    div;
  53 };
  54
  55 struct visconti_clk_gate {
  56         struct clk_hw   hw;
  57         struct regmap   *regmap;
  58         u32             ckon_offset;
  59         u32             ckoff_offset;
  60         u8              ck_idx;
  61         u8              flags;
  62         u32             rson_offset;
  63         u32             rsoff_offset;
  64         u8              rs_idx;
  65         spinlock_t      *lock;
  66 };
  67
  68 struct visconti_clk_provider *visconti_init_clk(struct device *dev,
  69                                                 struct regmap *regmap,
  70                                                 unsigned long nr_clks);
  71 int visconti_clk_register_gates(struct visconti_clk_provider *data,
  72                                  const struct visconti_clk_gate_table *clks,
  73                                  int num_gate,
  74                                  const struct visconti_reset_data *reset,
  75                                  spinlock_t *lock);
  76 #endif /* _VISCONTI_CLKC_H_ */