arch/arm/mach-imx/clk.h

   1 #ifndef __MACH_IMX_CLK_H
   2 #define __MACH_IMX_CLK_H
   3
   4 #include <linux/spinlock.h>
   5 #include <linux/clk-provider.h>
   6
   7 extern spinlock_t imx_ccm_lock;
   8
   9 extern void imx_cscmr1_fixup(u32 *val);
  10
  11 struct clk *imx_clk_pllv1(const char *name, const char *parent,
  12                 void __iomem *base);
  13
  14 struct clk *imx_clk_pllv2(const char *name, const char *parent,
  15                 void __iomem *base);
  16
  17 enum imx_pllv3_type {
  18         IMX_PLLV3_GENERIC,
  19         IMX_PLLV3_SYS,
  20         IMX_PLLV3_USB,
  21         IMX_PLLV3_AV,
  22         IMX_PLLV3_ENET,
  23 };
  24
  25 struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
  26                 const char *parent_name, void __iomem *base, u32 div_mask);
  27
  28 struct clk *clk_register_gate2(struct device *dev, const char *name,
  29                 const char *parent_name, unsigned long flags,
  30                 void __iomem *reg, u8 bit_idx,
  31                 u8 clk_gate_flags, spinlock_t *lock);
  32
  33 struct clk * imx_obtain_fixed_clock(
  34                         const char *name, unsigned long rate);
  35
  36 static inline struct clk *imx_clk_gate2(const char *name, const char *parent,
  37                 void __iomem *reg, u8 shift)
  38 {
  39         return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
  40                         shift, 0, &imx_ccm_lock);
  41 }
  42
  43 struct clk *imx_clk_pfd(const char *name, const char *parent_name,
  44                 void __iomem *reg, u8 idx);
  45
  46 struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
  47                                  void __iomem *reg, u8 shift, u8 width,
  48                                  void __iomem *busy_reg, u8 busy_shift);
  49
  50 struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
  51                              u8 width, void __iomem *busy_reg, u8 busy_shift,
  52                              const char **parent_names, int num_parents);
  53
  54 struct clk *imx_clk_fixup_divider(const char *name, const char *parent,
  55                                   void __iomem *reg, u8 shift, u8 width,
  56                                   void (*fixup)(u32 *val));
  57
  58 struct clk *imx_clk_fixup_mux(const char *name, void __iomem *reg,
  59                               u8 shift, u8 width, const char **parents,
  60                               int num_parents, void (*fixup)(u32 *val));
  61
  62 static inline struct clk *imx_clk_fixed(const char *name, int rate)
  63 {
  64         return clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT, rate);
  65 }
  66
  67 static inline struct clk *imx_clk_divider(const char *name, const char *parent,
  68                 void __iomem *reg, u8 shift, u8 width)
  69 {
  70         return clk_register_divider(NULL, name, parent, CLK_SET_RATE_PARENT,
  71                         reg, shift, width, 0, &imx_ccm_lock);
  72 }
  73
  74 static inline struct clk *imx_clk_divider_flags(const char *name,
  75                 const char *parent, void __iomem *reg, u8 shift, u8 width,
  76                 unsigned long flags)
  77 {
  78         return clk_register_divider(NULL, name, parent, flags,
  79                         reg, shift, width, 0, &imx_ccm_lock);
  80 }
  81
  82 static inline struct clk *imx_clk_gate(const char *name, const char *parent,
  83                 void __iomem *reg, u8 shift)
  84 {
  85         return clk_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
  86                         shift, 0, &imx_ccm_lock);
  87 }
  88
  89 static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg,
  90                 u8 shift, u8 width, const char **parents, int num_parents)
  91 {
  92         return clk_register_mux(NULL, name, parents, num_parents,
  93                         CLK_SET_RATE_NO_REPARENT, reg, shift,
  94                         width, 0, &imx_ccm_lock);
  95 }
  96
  97 static inline struct clk *imx_clk_mux_flags(const char *name,
  98                 void __iomem *reg, u8 shift, u8 width, const char **parents,
  99                 int num_parents, unsigned long flags)
 100 {
 101         return clk_register_mux(NULL, name, parents, num_parents,
 102                         flags | CLK_SET_RATE_NO_REPARENT, reg, shift, width, 0,
 103                         &imx_ccm_lock);
 104 }
 105
 106 static inline struct clk *imx_clk_fixed_factor(const char *name,
 107                 const char *parent, unsigned int mult, unsigned int div)
 108 {
 109         return clk_register_fixed_factor(NULL, name, parent,
 110                         CLK_SET_RATE_PARENT, mult, div);
 111 }
 112
 113 #endif