arch/arm/mach-mmp/clock.h

   1 /*
   2  *  linux/arch/arm/mach-mmp/clock.h
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License version 2 as
   6  *  published by the Free Software Foundation.
   7  */
   8
   9 #include <asm/clkdev.h>
  10
  11 struct clkops {
  12         void                    (*enable)(struct clk *);
  13         void                    (*disable)(struct clk *);
  14         unsigned long           (*getrate)(struct clk *);
  15 };
  16
  17 struct clk {
  18         const struct clkops     *ops;
  19
  20         void __iomem    *clk_rst;       /* clock reset control register */
  21         int             fnclksel;       /* functional clock select (APBC) */
  22         uint32_t        enable_val;     /* value for clock enable (APMU) */
  23         unsigned long   rate;
  24         int             enabled;
  25 };
  26
  27 extern struct clkops apbc_clk_ops;
  28
  29 #define APBC_CLK(_name, _reg, _fnclksel, _rate)                 \
  30 struct clk clk_##_name = {                                      \
  31                 .clk_rst        = (void __iomem *)APBC_##_reg,  \
  32                 .fnclksel       = _fnclksel,                    \
  33                 .rate           = _rate,                        \
  34                 .ops            = &apbc_clk_ops,                \
  35 }
  36
  37 #define APBC_CLK_OPS(_name, _reg, _fnclksel, _rate, _ops)       \
  38 struct clk clk_##_name = {                                      \
  39                 .clk_rst        = (void __iomem *)APBC_##_reg,  \
  40                 .fnclksel       = _fnclksel,                    \
  41                 .rate           = _rate,                        \
  42                 .ops            = _ops,                         \
  43 }
  44
  45 #define APMU_CLK(_name, _reg, _eval, _rate)                     \
  46 struct clk clk_##_name = {                                      \
  47                 .clk_rst        = (void __iomem *)APMU_##_reg,  \
  48                 .enable_val     = _eval,                        \
  49                 .rate           = _rate,                        \
  50                 .ops            = &apmu_clk_ops,                \
  51 }
  52
  53 #define APMU_CLK_OPS(_name, _reg, _eval, _rate, _ops)           \
  54 struct clk clk_##_name = {                                      \
  55                 .clk_rst        = (void __iomem *)APMU_##_reg,  \
  56                 .enable_val     = _eval,                        \
  57                 .rate           = _rate,                        \
  58                 .ops            = _ops,                         \
  59 }
  60
  61 #define INIT_CLKREG(_clk, _devname, _conname)                   \
  62         {                                                       \
  63                 .clk            = _clk,                         \
  64                 .dev_id         = _devname,                     \
  65                 .con_id         = _conname,                     \
  66         }
  67
  68 extern struct clk clk_pxa168_gpio;
  69 extern struct clk clk_pxa168_timers;
  70
  71 extern void clks_register(struct clk_lookup *, size_t);