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_IDLE 1
   9 #define HWBLK_CNT_DEVICES 2
  10 #define HWBLK_CNT_NR 3
  11
  12 #define HWBLK_AREA_FLAG_PARENT (1 << 0) /* valid parent */
  13
  14 #define HWBLK_AREA(_flags, _parent)             \
  15 {                                               \
  16         .flags = _flags,                        \
  17         .parent = _parent,                      \
  18 }
  19
  20 struct hwblk_area {
  21         int cnt[HWBLK_CNT_NR];
  22         unsigned char parent;
  23         unsigned char flags;
  24 };
  25
  26 #define HWBLK(_mstp, _bit, _area)               \
  27 {                                               \
  28         .mstp = (void __iomem *)_mstp,          \
  29         .bit = _bit,                            \
  30         .area = _area,                          \
  31 }
  32
  33 struct hwblk {
  34         void __iomem *mstp;
  35         unsigned char bit;
  36         unsigned char area;
  37         int cnt[HWBLK_CNT_NR];
  38 };
  39
  40 struct hwblk_info {
  41         struct hwblk_area *areas;
  42         int nr_areas;
  43         struct hwblk *hwblks;
  44         int nr_hwblks;
  45 };
  46
  47 /* Should be defined by processor-specific code */
  48 int arch_hwblk_init(void);
  49 int arch_hwblk_sleep_mode(void);
  50
  51 int hwblk_register(struct hwblk_info *info);
  52 int hwblk_init(void);
  53
  54 void hwblk_enable(struct hwblk_info *info, int hwblk);
  55 void hwblk_disable(struct hwblk_info *info, int hwblk);
  56
  57 void hwblk_cnt_inc(struct hwblk_info *info, int hwblk, int cnt);
  58 void hwblk_cnt_dec(struct hwblk_info *info, int hwblk, int cnt);
  59
  60 /* allow clocks to enable and disable hardware blocks */
  61 #define SH_HWBLK_CLK(_hwblk, _parent, _flags)   \
  62 [_hwblk] = {                                    \
  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 */