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-rw-r--r--include/linux/clk-provider.h50
1 files changed, 48 insertions, 2 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 3ecc07d0da77..c56988ac63f7 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -500,13 +500,14 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
*
* Clock with adjustable fractional divider affecting its output frequency.
*/
-
struct clk_fractional_divider {
struct clk_hw hw;
void __iomem *reg;
u8 mshift;
+ u8 mwidth;
u32 mmask;
u8 nshift;
+ u8 nwidth;
u32 nmask;
u8 flags;
spinlock_t *lock;
@@ -518,6 +519,41 @@ struct clk *clk_register_fractional_divider(struct device *dev,
void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
u8 clk_divider_flags, spinlock_t *lock);
+/**
+ * struct clk_multiplier - adjustable multiplier clock
+ *
+ * @hw: handle between common and hardware-specific interfaces
+ * @reg: register containing the multiplier
+ * @shift: shift to the multiplier bit field
+ * @width: width of the multiplier bit field
+ * @lock: register lock
+ *
+ * Clock with an adjustable multiplier affecting its output frequency.
+ * Implements .recalc_rate, .set_rate and .round_rate
+ *
+ * Flags:
+ * CLK_MULTIPLIER_ZERO_BYPASS - By default, the multiplier is the value read
+ * from the register, with 0 being a valid value effectively
+ * zeroing the output clock rate. If CLK_MULTIPLIER_ZERO_BYPASS is
+ * set, then a null multiplier will be considered as a bypass,
+ * leaving the parent rate unmodified.
+ * CLK_MULTIPLIER_ROUND_CLOSEST - Makes the best calculated divider to be
+ * rounded to the closest integer instead of the down one.
+ */
+struct clk_multiplier {
+ struct clk_hw hw;
+ void __iomem *reg;
+ u8 shift;
+ u8 width;
+ u8 flags;
+ spinlock_t *lock;
+};
+
+#define CLK_MULTIPLIER_ZERO_BYPASS BIT(0)
+#define CLK_MULTIPLIER_ROUND_CLOSEST BIT(1)
+
+extern const struct clk_ops clk_multiplier_ops;
+
/***
* struct clk_composite - aggregate clock of mux, divider and gate clocks
*
@@ -606,7 +642,7 @@ void clk_unregister(struct clk *clk);
void devm_clk_unregister(struct device *dev, struct clk *clk);
/* helper functions */
-const char *__clk_get_name(struct clk *clk);
+const char *__clk_get_name(const struct clk *clk);
const char *clk_hw_get_name(const struct clk_hw *hw);
struct clk_hw *__clk_get_hw(struct clk *clk);
unsigned int clk_hw_get_num_parents(const struct clk_hw *hw);
@@ -618,6 +654,7 @@ unsigned long clk_hw_get_rate(const struct clk_hw *hw);
unsigned long __clk_get_flags(struct clk *clk);
unsigned long clk_hw_get_flags(const struct clk_hw *hw);
bool clk_hw_is_prepared(const struct clk_hw *hw);
+bool clk_hw_is_enabled(const struct clk_hw *hw);
bool __clk_is_enabled(struct clk *clk);
struct clk *__clk_lookup(const char *name);
int __clk_mux_determine_rate(struct clk_hw *hw,
@@ -690,6 +727,15 @@ static inline struct clk *of_clk_src_onecell_get(
{
return ERR_PTR(-ENOENT);
}
+static inline int of_clk_get_parent_count(struct device_node *np)
+{
+ return 0;
+}
+static inline int of_clk_parent_fill(struct device_node *np,
+ const char **parents, unsigned int size)
+{
+ return 0;
+}
static inline const char *of_clk_get_parent_name(struct device_node *np,
int index)
{