Allow defining fractional dividers that can't be set.
Signed-off-by: Alban Bedel <albeu@xxxxxxx>
---
drivers/clk/clk-fractional-divider.c | 10 +++++++++-
include/linux/clk-provider.h | 3 +++
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk-fractional-divider.c b/drivers/clk/clk-fractional-divider.c
index 82a59d0..b562281 100644
--- a/drivers/clk/clk-fractional-divider.c
+++ b/drivers/clk/clk-fractional-divider.c
@@ -96,6 +96,11 @@ const struct clk_ops clk_fractional_divider_ops = {
};
EXPORT_SYMBOL_GPL(clk_fractional_divider_ops);
+const struct clk_ops clk_fractional_divider_ro_ops = {
+ .recalc_rate = clk_fd_recalc_rate,
+};
+EXPORT_SYMBOL_GPL(clk_fractional_divider_ro_ops);
+
struct clk *clk_register_fractional_divider(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
@@ -112,7 +117,10 @@ struct clk *clk_register_fractional_divider(struct device *dev,
}
init.name = name;
- init.ops = &clk_fractional_divider_ops;
+ if (clk_divider_flags & CLK_FRACTIONAL_DIVIDER_READ_ONLY)
+ init.ops = &clk_fractional_divider_ro_ops;
+ else
+ init.ops = &clk_fractional_divider_ops;
init.flags = flags | CLK_IS_BASIC;
init.parent_names = parent_name ? &parent_name : NULL;
init.num_parents = parent_name ? 1 : 0;
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index be21af1..29ea77a 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -462,7 +462,10 @@ struct clk_fractional_divider {
spinlock_t *lock;
};
+#define CLK_FRACTIONAL_DIVIDER_READ_ONLY BIT(0)
+
extern const struct clk_ops clk_fractional_divider_ops;
+extern const struct clk_ops clk_fractional_divider_ro_ops;
struct clk *clk_register_fractional_divider(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,
--
2.0.0
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