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 33dc814..34f1455 100644 (file)
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -25,7 +25,7 @@
 #define CLK_SET_PARENT_GATE    BIT(1) /* must be gated across re-parent */
 #define CLK_SET_RATE_PARENT    BIT(2) /* propagate rate change up one level */
 #define CLK_IGNORE_UNUSED      BIT(3) /* do not gate even if unused */
-#define CLK_IS_ROOT            BIT(4) /* root clk, has no parent */
+#define CLK_IS_ROOT            BIT(4) /* Deprecated: Don't use */
 #define CLK_IS_BASIC           BIT(5) /* Basic clk, can't do a to_clk_foo() */
 #define CLK_GET_RATE_NOCACHE   BIT(6) /* do not use the cached clk rate */
 #define CLK_SET_RATE_NO_REPARENT BIT(7) /* don't re-parent on rate change */
@@ -285,7 +285,7 @@ struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
 struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
                const char *name, const char *parent_name, unsigned long flags,
                unsigned long fixed_rate, unsigned long fixed_accuracy);
-
+void clk_unregister_fixed_rate(struct clk *clk);
 void of_fixed_clk_setup(struct device_node *np);
 
 /**
@@ -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;
@@ -498,6 +501,7 @@ extern const struct clk_ops clk_fixed_factor_ops;
 struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
                const char *parent_name, unsigned long flags,
                unsigned int mult, unsigned int div);
+void clk_unregister_fixed_factor(struct clk *clk);
 
 /**
  * struct clk_fractional_divider - adjustable fractional divider clock
@@ -625,8 +629,6 @@ struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
                const char *parent_name, unsigned gpio, bool active_low,
                unsigned long flags);
 
-void of_gpio_clk_gate_setup(struct device_node *node);
-
 /**
  * struct clk_gpio_mux - gpio controlled clock multiplexer
  *
@@ -642,8 +644,6 @@ struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
                const char * const *parent_names, u8 num_parents, unsigned gpio,
                bool active_low, unsigned long flags);
 
-void of_gpio_mux_clk_setup(struct device_node *node);
-
 /**
  * clk_register - allocate a new clock, register it and return an opaque cookie
  * @dev: device that is registering this clock
@@ -719,7 +719,7 @@ void of_clk_del_provider(struct device_node *np);
 struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec,
                                  void *data);
 struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data);
-int of_clk_get_parent_count(struct device_node *np);
+unsigned int of_clk_get_parent_count(struct device_node *np);
 int of_clk_parent_fill(struct device_node *np, const char **parents,
                       unsigned int size);
 const char *of_clk_get_parent_name(struct device_node *np, int index);
@@ -794,6 +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);