drivers/clk/hisilicon/clk.h

   1 /*
   2  * Hisilicon Hi3620 clock gate driver
   3  *
   4  * Copyright (c) 2012-2013 Hisilicon Limited.
   5  * Copyright (c) 2012-2013 Linaro Limited.
   6  *
   7  * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
   8  *         Xin Li <li.xin@linaro.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  *
  24  */
  25
  26 #ifndef __HISI_CLK_H
  27 #define __HISI_CLK_H
  28
  29 #include <linux/clk-provider.h>
  30 #include <linux/io.h>
  31 #include <linux/spinlock.h>
  32
  33 struct platform_device;
  34
  35 struct hisi_clock_data {
  36         struct clk_onecell_data clk_data;
  37         void __iomem            *base;
  38 };
  39
  40 struct hisi_fixed_rate_clock {
  41         unsigned int            id;
  42         char                    *name;
  43         const char              *parent_name;
  44         unsigned long           flags;
  45         unsigned long           fixed_rate;
  46 };
  47
  48 struct hisi_fixed_factor_clock {
  49         unsigned int            id;
  50         char                    *name;
  51         const char              *parent_name;
  52         unsigned long           mult;
  53         unsigned long           div;
  54         unsigned long           flags;
  55 };
  56
  57 struct hisi_mux_clock {
  58         unsigned int            id;
  59         const char              *name;
  60         const char              *const *parent_names;
  61         u8                      num_parents;
  62         unsigned long           flags;
  63         unsigned long           offset;
  64         u8                      shift;
  65         u8                      width;
  66         u8                      mux_flags;
  67         u32                     *table;
  68         const char              *alias;
  69 };
  70
  71 struct hisi_phase_clock {
  72         unsigned int            id;
  73         const char              *name;
  74         const char              *parent_names;
  75         unsigned long           flags;
  76         unsigned long           offset;
  77         u8                      shift;
  78         u8                      width;
  79         u32                     *phase_degrees;
  80         u32                     *phase_regvals;
  81         u8                      phase_num;
  82 };
  83
  84 struct hisi_divider_clock {
  85         unsigned int            id;
  86         const char              *name;
  87         const char              *parent_name;
  88         unsigned long           flags;
  89         unsigned long           offset;
  90         u8                      shift;
  91         u8                      width;
  92         u8                      div_flags;
  93         struct clk_div_table    *table;
  94         const char              *alias;
  95 };
  96
  97 struct hi6220_divider_clock {
  98         unsigned int            id;
  99         const char              *name;
 100         const char              *parent_name;
 101         unsigned long           flags;
 102         unsigned long           offset;
 103         u8                      shift;
 104         u8                      width;
 105         u32                     mask_bit;
 106         const char              *alias;
 107 };
 108
 109 struct hisi_gate_clock {
 110         unsigned int            id;
 111         const char              *name;
 112         const char              *parent_name;
 113         unsigned long           flags;
 114         unsigned long           offset;
 115         u8                      bit_idx;
 116         u8                      gate_flags;
 117         const char              *alias;
 118 };
 119
 120 struct clk *hisi_register_clkgate_sep(struct device *, const char *,
 121                                 const char *, unsigned long,
 122                                 void __iomem *, u8,
 123                                 u8, spinlock_t *);
 124 struct clk *hi6220_register_clkdiv(struct device *dev, const char *name,
 125         const char *parent_name, unsigned long flags, void __iomem *reg,
 126         u8 shift, u8 width, u32 mask_bit, spinlock_t *lock);
 127
 128 struct hisi_clock_data *hisi_clk_alloc(struct platform_device *, int);
 129 struct hisi_clock_data *hisi_clk_init(struct device_node *, int);
 130 int hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *,
 131                                 int, struct hisi_clock_data *);
 132 int hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *,
 133                                 int, struct hisi_clock_data *);
 134 int hisi_clk_register_mux(const struct hisi_mux_clock *, int,
 135                                 struct hisi_clock_data *);
 136 struct clk *clk_register_hisi_phase(struct device *dev,
 137                                 const struct hisi_phase_clock *clks,
 138                                 void __iomem *base, spinlock_t *lock);
 139 int hisi_clk_register_phase(struct device *dev,
 140                                 const struct hisi_phase_clock *clks,
 141                                 int nums, struct hisi_clock_data *data);
 142 int hisi_clk_register_divider(const struct hisi_divider_clock *,
 143                                 int, struct hisi_clock_data *);
 144 int hisi_clk_register_gate(const struct hisi_gate_clock *,
 145                                 int, struct hisi_clock_data *);
 146 void hisi_clk_register_gate_sep(const struct hisi_gate_clock *,
 147                                 int, struct hisi_clock_data *);
 148 void hi6220_clk_register_divider(const struct hi6220_divider_clock *,
 149                                 int, struct hisi_clock_data *);
 150
 151 #define hisi_clk_unregister(type) \
 152 static inline \
 153 void hisi_clk_unregister_##type(const struct hisi_##type##_clock *clks, \
 154                                 int nums, struct hisi_clock_data *data) \
 155 { \
 156         struct clk **clocks = data->clk_data.clks; \
 157         int i; \
 158         for (i = 0; i < nums; i++) { \
 159                 int id = clks[i].id; \
 160                 if (clocks[id])  \
 161                         clk_unregister_##type(clocks[id]); \
 162         } \
 163 }
 164
 165 hisi_clk_unregister(fixed_rate)
 166 hisi_clk_unregister(fixed_factor)
 167 hisi_clk_unregister(mux)
 168 hisi_clk_unregister(divider)
 169 hisi_clk_unregister(gate)
 170
 171 #endif  /* __HISI_CLK_H */