New clk_register_desc() call can be used to register this clock type now.
Signed-off-by: Tero Kristo <t-kri...@ti.com>
---
drivers/clk/clk-mux.c | 37 +++++++++++++++++++++++++++++++++++++
include/linux/clk-provider.h | 20 ++++++++++++++++++++
2 files changed, 57 insertions(+)
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index 4f96ff3..2cbed08 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -27,8 +27,12 @@
* parent - parent is adjustable through clk_set_parent
*/
+/* resolve struct clk_mux from inner struct clk_hw member */
#define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw)
+/* resolve struct clk_mux_desc from inner struct clk_desc member */
+#define to_hw_desc(_desc) container_of(_desc, struct clk_mux_desc, desc)
+
static u8 clk_mux_get_parent(struct clk_hw *hw)
{
struct clk_mux *mux = to_clk_mux(hw);
@@ -177,3 +181,36 @@ struct clk *clk_register_mux(struct device *dev, const
char *name,
NULL, lock);
}
EXPORT_SYMBOL_GPL(clk_register_mux);
+
+struct clk_hw *clk_register_mux_desc(struct device *dev, struct clk_desc *desc)
+{
+ struct clk_mux *mux;
+ struct clk_mux_desc *hw_desc;
+
+ hw_desc = to_hw_desc(desc);
+
+ /* allocate mux clock */
+ mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+ if (!mux)
+ return ERR_PTR(-ENOMEM);
+
+ /* populate struct clk_mux assignments */
+ mux->reg = hw_desc->reg;
+ mux->table = hw_desc->table;
+ mux->mask = hw_desc->mask;
+ mux->shift = hw_desc->shift;
+ mux->flags = hw_desc->flags;
+ mux->lock = hw_desc->lock;
+
+ if (!desc->ops) {
+ if (mux->flags & CLK_MUX_READ_ONLY)
+ desc->ops = &clk_mux_ro_ops;
+ else
+ desc->ops = &clk_mux_ops;
+ }
+
+ desc->flags |= CLK_IS_BASIC;
+
+ return &mux->hw;
+}
+EXPORT_SYMBOL_GPL(clk_register_mux_desc);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index bf89ab4..ea5281c 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -391,6 +391,25 @@ struct clk_mux {
spinlock_t *lock;
};
+/**
+ * struct clk_mux_desc - init descriptor for multiplexer clock
+ * @desc: handle between common and hardware-specific interfaces
+ * @reg: register controlling multiplexer
+ * @shift: shift to multiplexer bit field
+ * @width: width of multiplexer bit field
+ * @flags: hardware-specific flags
+ * @lock: register lock
+ */
+struct clk_mux_desc {
+ struct clk_desc desc;
+ void __iomem *reg;
+ u32 *table;
+ u32 mask;
+ u8 shift;
+ u8 flags;
+ spinlock_t *lock;
+};
+
#define CLK_MUX_INDEX_ONE BIT(0)
#define CLK_MUX_INDEX_BIT BIT(1)
#define CLK_MUX_HIWORD_MASK BIT(2)
@@ -399,6 +418,7 @@ struct clk_mux {
extern const struct clk_ops clk_mux_ops;
extern const struct clk_ops clk_mux_ro_ops;
+struct clk_hw *clk_register_mux_desc(struct device *dev, struct clk_desc
*desc);
struct clk *clk_register_mux(struct device *dev, const char *name,
const char **parent_names, u8 num_parents, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
--
1.7.9.5
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