clk: Add 16bit register access for clk-divider.

[uclinux-h8/linux.git] / include / linux / clk-provider.h

diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index da95258..34f1455 100644 (file)
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -369,6 +369,8 @@ struct clk_div_table {
  * CLK_DIVIDER_MAX_AT_ZERO - For dividers which are like CLK_DIVIDER_ONE_BASED
  *     except when the value read from the register is zero, the divisor is
  *     2^width of the field.
+ * CLK_DIVIDER_WORD_REG - The driver use 16-bit access function for register.
+ *     Usally 32-bit access.
  */
 struct clk_divider {
        struct clk_hw   hw;
@@ -389,6 +391,7 @@ struct clk_divider {
 #define CLK_DIVIDER_ROUND_CLOSEST      BIT(4)
 #define CLK_DIVIDER_READ_ONLY          BIT(5)
 #define CLK_DIVIDER_MAX_AT_ZERO                BIT(6)
+#define CLK_DIVIDER_WORD_REG           BIT(7)
 
 extern const struct clk_ops clk_divider_ops;
 extern const struct clk_ops clk_divider_ro_ops;
@@ -791,6 +794,16 @@ static inline void clk_writel(u32 val, u32 __iomem *reg)
 
 #endif /* platform dependent I/O accessors */
 
+static inline u32 clk_readw(u32 __iomem *reg)
+{
+       return readw(reg);
+}
+
+static inline void clk_writew(u32 val, u32 __iomem *reg)
+{
+       writew(val, reg);
+}
+
 #ifdef CONFIG_DEBUG_FS
 struct dentry *clk_debugfs_add_file(struct clk_hw *hw, char *name, umode_t mode,
                                void *data, const struct file_operations *fops);