New clk_register_desc() call can be used to register this clock type now.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
drivers/clk/clk-gate.c | 31 +++++++++++++++++++++++++++++++
include/linux/clk-provider.h | 19 +++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 4a58c55..3ec61d2 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -26,8 +26,12 @@
* parent - fixed parent. No clk_set_parent support
*/
+/* resolve struct clk_gate from inner struct clk_hw member */
#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
+/* resolve struct clk_gate_desc from inner struct clk_desc member */
+#define to_hw_desc(_desc) container_of(_desc, struct clk_gate_desc, desc)
+
/*
* It works on following logic:
*
@@ -162,3 +166,30 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
return clk;
}
EXPORT_SYMBOL_GPL(clk_register_gate);
+
+struct clk_hw *clk_register_gate_desc(struct device *dev, struct clk_desc *desc)
+{
+ struct clk_gate *gate;
+ struct clk_gate_desc *hw_desc;
+
+ hw_desc = to_hw_desc(desc);
+
+ /* allocate mux clock */
+ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+ return ERR_PTR(-ENOMEM);
+
+ /* populate struct clk_gate assignments */
+ gate->reg = hw_desc->reg;
+ gate->bit_idx = hw_desc->bit_idx;
+ gate->flags = hw_desc->flags;
+ gate->lock = hw_desc->lock;
+
+ if (!desc->ops)
+ desc->ops = &clk_gate_ops;
+
+ desc->flags |= CLK_IS_BASIC;
+
+ return &gate->hw;
+}
+EXPORT_SYMBOL_GPL(clk_register_gate_desc);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 7dd6842..27a9765 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -269,10 +269,29 @@ struct clk_gate {
spinlock_t *lock;
};
+/**
+ * struct clk_gate_desc - init descriptor for gating clock
+ *
+ * @desc: handle between common and hardware-specific interfaces
+ * @reg: register controlling gate
+ * @bit_idx: single bit controlling gate
+ * @flags: hardware-specific flags
+ * @lock: register lock
+ */
+struct clk_gate_desc {
+ struct clk_desc desc;
+ void __iomem *reg;
+ u8 bit_idx;
+ u8 flags;
+ spinlock_t *lock;
+};
+
#define CLK_GATE_SET_TO_DISABLE BIT(0)
#define CLK_GATE_HIWORD_MASK BIT(1)
extern const struct clk_ops clk_gate_ops;
+struct clk_hw *clk_register_gate_desc(struct device *dev,
+ struct clk_desc *desc);
struct clk *clk_register_gate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx,
--
1.7.9.5
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