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authorHeiko Stuebner <heiko@sntech.de>2014-05-23 17:02:15 +0400
committerMike Turquette <mturquette@linaro.org>2014-05-24 00:45:47 +0400
commit79c6ab509558f9871175c7e4411f857de12cf33b (patch)
treedd67f6534ab3be884ec541f710605af688e87c9a /drivers/clk/clk-divider.c
parent1923ca92a618b6107d3a44b5c9f9360b104dcddb (diff)
downloadlinux-79c6ab509558f9871175c7e4411f857de12cf33b.tar.xz
clk: divider: add CLK_DIVIDER_READ_ONLY flag
From: Heiko Stuebner <heiko@sntech.de> Similar to muxes which already have a read-only flag there sometimes exist dividers which should not be changed by the clock framework but whose value still should be readable. Therefore add a READ_ONLY flag similar to the mux-one to clk-divider Signed-off-by: Heiko Stuebner <heiko@sntech.de> [changed flag bit to BIT(5) as suggested by Tomasz Figa] Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Acked-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Max Schwarz <max.schwarz@online.de> Tested-by: Max Schwarz <max.schwarz@online.de> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/clk-divider.c')
-rw-r--r--drivers/clk/clk-divider.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index b3c83966be18..c9343f5d9918 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -361,6 +361,11 @@ const struct clk_ops clk_divider_ops = {
};
EXPORT_SYMBOL_GPL(clk_divider_ops);
+const struct clk_ops clk_divider_ro_ops = {
+ .recalc_rate = clk_divider_recalc_rate,
+};
+EXPORT_SYMBOL_GPL(clk_divider_ro_ops);
+
static struct clk *_register_divider(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
@@ -386,7 +391,10 @@ static struct clk *_register_divider(struct device *dev, const char *name,
}
init.name = name;
- init.ops = &clk_divider_ops;
+ if (clk_divider_flags & CLK_DIVIDER_READ_ONLY)
+ init.ops = &clk_divider_ro_ops;
+ else
+ init.ops = &clk_divider_ops;
init.flags = flags | CLK_IS_BASIC;
init.parent_names = (parent_name ? &parent_name: NULL);
init.num_parents = (parent_name ? 1 : 0);