arch/sh/include/asm/hwblk.h

   1 #ifndef __ASM_SH_HWBLK_H
   2 #define __ASM_SH_HWBLK_H
   3
   4 #include <asm/clock.h>
   5 #include <asm/io.h>
   6
   7 #define HWBLK_CNT_USAGE 0
   8 #define HWBLK_CNT_NR 1
   9
  10 #define HWBLK_AREA_FLAG_PARENT (1 << 0) /* valid parent */
  11
  12 #define HWBLK_AREA(_flags, _parent)             \
  13 {                                               \
  14         .flags = _flags,                        \
  15         .parent = _parent,                      \
  16 }
  17
  18 struct hwblk_area {
  19         int cnt[HWBLK_CNT_NR];
  20         unsigned char parent;
  21         unsigned char flags;
  22 };
  23
  24 #define HWBLK(_mstp, _bit, _area)               \
  25 {                                               \
  26         .mstp = (void __iomem *)_mstp,          \
  27         .bit = _bit,                            \
  28         .area = _area,                          \
  29 }
  30
  31 struct hwblk {
  32         void __iomem *mstp;
  33         unsigned char bit;
  34         unsigned char area;
  35         int cnt[HWBLK_CNT_NR];
  36 };
  37
  38 struct hwblk_info {
  39         struct hwblk_area *areas;
  40         int nr_areas;
  41         struct hwblk *hwblks;
  42         int nr_hwblks;
  43 };
  44
  45 /* Should be defined by processor-specific code */
  46 int arch_hwblk_init(void);
  47 int arch_hwblk_sleep_mode(void);
  48
  49 int hwblk_register(struct hwblk_info *info);
  50 int hwblk_init(void);
  51
  52 void hwblk_enable(struct hwblk_info *info, int hwblk);
  53 void hwblk_disable(struct hwblk_info *info, int hwblk);
  54
  55 void hwblk_cnt_inc(struct hwblk_info *info, int hwblk, int cnt);
  56 void hwblk_cnt_dec(struct hwblk_info *info, int hwblk, int cnt);
  57
  58 /* allow clocks to enable and disable hardware blocks */
  59 #define SH_HWBLK_CLK(_name, _id, _parent, _hwblk, _flags)       \
  60 {                                                       \
  61         .name           = _name,                        \
  62         .id             = _id,                          \
  63         .parent         = _parent,                      \
  64         .arch_flags     = _hwblk,                       \
  65         .flags          = _flags,                       \
  66 }
  67
  68 int sh_hwblk_clk_register(struct clk *clks, int nr);
  69
  70 #endif /* __ASM_SH_HWBLK_H */