Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[firefly-linux-kernel-4.4.55.git] / include / linux / clk-provider.h

diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index d936409520f8db609994f7ddab629a99981883dc..5591ea71a8d14054bf923dcad45dc94f71bd029a 100644 (file)
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -33,6 +33,7 @@
 #define CLK_GET_ACCURACY_NOCACHE BIT(8) /* do not use the cached clk accuracy */
 
 struct clk_hw;
+struct clk_core;
 struct dentry;
 
 /**
@@ -174,9 +175,12 @@ struct clk_ops {
                                        unsigned long parent_rate);
        long            (*round_rate)(struct clk_hw *hw, unsigned long rate,
                                        unsigned long *parent_rate);
-       long            (*determine_rate)(struct clk_hw *hw, unsigned long rate,
-                                       unsigned long *best_parent_rate,
-                                       struct clk_hw **best_parent_hw);
+       long            (*determine_rate)(struct clk_hw *hw,
+                                         unsigned long rate,
+                                         unsigned long min_rate,
+                                         unsigned long max_rate,
+                                         unsigned long *best_parent_rate,
+                                         struct clk_hw **best_parent_hw);
        int             (*set_parent)(struct clk_hw *hw, u8 index);
        u8              (*get_parent)(struct clk_hw *hw);
        int             (*set_rate)(struct clk_hw *hw, unsigned long rate,
@@ -216,13 +220,17 @@ struct clk_init_data {
  * clk_foo and then referenced by the struct clk instance that uses struct
  * clk_foo's clk_ops
  *
- * @clk: pointer to the struct clk instance that points back to this struct
- * clk_hw instance
+ * @core: pointer to the struct clk_core instance that points back to this
+ * struct clk_hw instance
+ *
+ * @clk: pointer to the per-user struct clk instance that can be used to call
+ * into the clk API
  *
  * @init: pointer to struct clk_init_data that contains the init data shared
  * with the common clock framework.
  */
 struct clk_hw {
+       struct clk_core *core;
        struct clk *clk;
        const struct clk_init_data *init;
 };
@@ -294,6 +302,7 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
                const char *parent_name, unsigned long flags,
                void __iomem *reg, u8 bit_idx,
                u8 clk_gate_flags, spinlock_t *lock);
+void clk_unregister_gate(struct clk *clk);
 
 struct clk_div_table {
        unsigned int    val;
@@ -352,6 +361,17 @@ struct clk_divider {
 #define CLK_DIVIDER_READ_ONLY          BIT(5)
 
 extern const struct clk_ops clk_divider_ops;
+
+unsigned long divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate,
+               unsigned int val, const struct clk_div_table *table,
+               unsigned long flags);
+long divider_round_rate(struct clk_hw *hw, unsigned long rate,
+               unsigned long *prate, const struct clk_div_table *table,
+               u8 width, unsigned long flags);
+int divider_get_val(unsigned long rate, unsigned long parent_rate,
+               const struct clk_div_table *table, u8 width,
+               unsigned long flags);
+
 struct clk *clk_register_divider(struct device *dev, const char *name,
                const char *parent_name, unsigned long flags,
                void __iomem *reg, u8 shift, u8 width,
@@ -361,6 +381,7 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
                void __iomem *reg, u8 shift, u8 width,
                u8 clk_divider_flags, const struct clk_div_table *table,
                spinlock_t *lock);
+void clk_unregister_divider(struct clk *clk);
 
 /**
  * struct clk_mux - multiplexer clock
@@ -382,6 +403,8 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
  *     register, and mask of mux bits are in higher 16-bit of this register.
  *     While setting the mux bits, higher 16-bit should also be updated to
  *     indicate changing mux bits.
+ * CLK_MUX_ROUND_CLOSEST - Use the parent rate that is closest to the desired
+ *     frequency.
  */
 struct clk_mux {
        struct clk_hw   hw;
@@ -396,7 +419,8 @@ struct clk_mux {
 #define CLK_MUX_INDEX_ONE              BIT(0)
 #define CLK_MUX_INDEX_BIT              BIT(1)
 #define CLK_MUX_HIWORD_MASK            BIT(2)
-#define CLK_MUX_READ_ONLY      BIT(3) /* mux setting cannot be changed */
+#define CLK_MUX_READ_ONLY              BIT(3) /* mux can't be changed */
+#define CLK_MUX_ROUND_CLOSEST          BIT(4)
 
 extern const struct clk_ops clk_mux_ops;
 extern const struct clk_ops clk_mux_ro_ops;
@@ -411,6 +435,8 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
                void __iomem *reg, u8 shift, u32 mask,
                u8 clk_mux_flags, u32 *table, spinlock_t *lock);
 
+void clk_unregister_mux(struct clk *clk);
+
 void of_fixed_factor_clk_setup(struct device_node *node);
 
 /**
@@ -550,15 +576,29 @@ bool __clk_is_prepared(struct clk *clk);
 bool __clk_is_enabled(struct clk *clk);
 struct clk *__clk_lookup(const char *name);
 long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
+                             unsigned long min_rate,
+                             unsigned long max_rate,
                              unsigned long *best_parent_rate,
                              struct clk_hw **best_parent_p);
+unsigned long __clk_determine_rate(struct clk_hw *core,
+                                  unsigned long rate,
+                                  unsigned long min_rate,
+                                  unsigned long max_rate);
+long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
+                             unsigned long min_rate,
+                             unsigned long max_rate,
+                             unsigned long *best_parent_rate,
+                             struct clk_hw **best_parent_p);
+
+static inline void __clk_hw_set_clk(struct clk_hw *dst, struct clk_hw *src)
+{
+       dst->clk = src->clk;
+       dst->core = src->core;
+}
 
 /*
  * FIXME clock api without lock protection
  */
-int __clk_prepare(struct clk *clk);
-void __clk_unprepare(struct clk *clk);
-void __clk_reparent(struct clk *clk, struct clk *new_parent);
 unsigned long __clk_round_rate(struct clk *clk, unsigned long rate);
 
 struct of_device_id;