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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-24 06:56:08 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-24 06:56:08 +0400
commit7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24 (patch)
tree460812792bc3b23789a83968b7bad840cc3eb047 /drivers/clk/clk-fixed-rate.c
parent0ba3307a8ec35252f7b1e222e32889a6f3d9ceb3 (diff)
parent2e84d75116c17c2034e917b411250d2d11755435 (diff)
downloadlinux-7e21774db5cc9cf8fe93a64a2f0c6cf47db8ab24.tar.xz
Merge tag 'clk-for-linus-3.14-part1' of git://git.linaro.org/people/mike.turquette/linux
Pull clk framework changes from Mike Turquette: "The first half of the clk framework pull request is made up almost entirely of new platform/driver support. There are some conversions of existing drivers to the common-clock Device Tree binding, and a few non-critical fixes to the framework. Due to an entirely unnecessary cyclical dependency with the arm-soc tree this pull request is broken into two pieces. The second piece will be sent out after arm-soc sends you the pull request that merged in core support for the HiSilicon 3620 platform. That same pull request from arm-soc depends on this pull request to merge in those HiSilicon bits without causing build failures" [ Just did the ARM SoC merges, so getting ready for the second clk tree pull request - Linus ] * tag 'clk-for-linus-3.14-part1' of git://git.linaro.org/people/mike.turquette/linux: (97 commits) devicetree: bindings: Document qcom,mmcc devicetree: bindings: Document qcom,gcc clk: qcom: Add support for MSM8660's global clock controller (GCC) clk: qcom: Add support for MSM8974's multimedia clock controller (MMCC) clk: qcom: Add support for MSM8974's global clock controller (GCC) clk: qcom: Add support for MSM8960's multimedia clock controller (MMCC) clk: qcom: Add support for MSM8960's global clock controller (GCC) clk: qcom: Add reset controller support clk: qcom: Add support for branches/gate clocks clk: qcom: Add support for root clock generators (RCGs) clk: qcom: Add support for phase locked loops (PLLs) clk: qcom: Add a regmap type clock struct clk: Add set_rate_and_parent() op reset: Silence warning in reset-controller.h clk: sirf: re-arch to make the codes support both prima2 and atlas6 clk: composite: pass mux_hw into determine_rate clk: shmobile: Fix MSTP clock array initialization clk: shmobile: Fix MSTP clock index ARM: dts: Add clock provider specific properties to max77686 node clk: max77686: Register OF clock provider ...
Diffstat (limited to 'drivers/clk/clk-fixed-rate.c')
-rw-r--r--drivers/clk/clk-fixed-rate.c43
1 files changed, 37 insertions, 6 deletions
diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c
index 1ed591ab8b1d..0fc56ab6e844 100644
--- a/drivers/clk/clk-fixed-rate.c
+++ b/drivers/clk/clk-fixed-rate.c
@@ -34,22 +34,31 @@ static unsigned long clk_fixed_rate_recalc_rate(struct clk_hw *hw,
return to_clk_fixed_rate(hw)->fixed_rate;
}
+static unsigned long clk_fixed_rate_recalc_accuracy(struct clk_hw *hw,
+ unsigned long parent_accuracy)
+{
+ return to_clk_fixed_rate(hw)->fixed_accuracy;
+}
+
const struct clk_ops clk_fixed_rate_ops = {
.recalc_rate = clk_fixed_rate_recalc_rate,
+ .recalc_accuracy = clk_fixed_rate_recalc_accuracy,
};
EXPORT_SYMBOL_GPL(clk_fixed_rate_ops);
/**
- * clk_register_fixed_rate - register fixed-rate clock with the clock framework
+ * clk_register_fixed_rate_with_accuracy - register fixed-rate clock with the
+ * clock framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
* @flags: framework-specific flags
* @fixed_rate: non-adjustable clock rate
+ * @fixed_accuracy: non-adjustable clock rate
*/
-struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
- const char *parent_name, unsigned long flags,
- unsigned long fixed_rate)
+struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
+ const char *name, const char *parent_name, unsigned long flags,
+ unsigned long fixed_rate, unsigned long fixed_accuracy)
{
struct clk_fixed_rate *fixed;
struct clk *clk;
@@ -70,16 +79,33 @@ struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
/* struct clk_fixed_rate assignments */
fixed->fixed_rate = fixed_rate;
+ fixed->fixed_accuracy = fixed_accuracy;
fixed->hw.init = &init;
/* register the clock */
clk = clk_register(dev, &fixed->hw);
-
if (IS_ERR(clk))
kfree(fixed);
return clk;
}
+EXPORT_SYMBOL_GPL(clk_register_fixed_rate_with_accuracy);
+
+/**
+ * clk_register_fixed_rate - register fixed-rate clock with the clock framework
+ * @dev: device that is registering this clock
+ * @name: name of this clock
+ * @parent_name: name of clock's parent
+ * @flags: framework-specific flags
+ * @fixed_rate: non-adjustable clock rate
+ */
+struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ unsigned long fixed_rate)
+{
+ return clk_register_fixed_rate_with_accuracy(dev, name, parent_name,
+ flags, fixed_rate, 0);
+}
EXPORT_SYMBOL_GPL(clk_register_fixed_rate);
#ifdef CONFIG_OF
@@ -91,13 +117,18 @@ void of_fixed_clk_setup(struct device_node *node)
struct clk *clk;
const char *clk_name = node->name;
u32 rate;
+ u32 accuracy = 0;
if (of_property_read_u32(node, "clock-frequency", &rate))
return;
+ of_property_read_u32(node, "clock-accuracy", &accuracy);
+
of_property_read_string(node, "clock-output-names", &clk_name);
- clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT, rate);
+ clk = clk_register_fixed_rate_with_accuracy(NULL, clk_name, NULL,
+ CLK_IS_ROOT, rate,
+ accuracy);
if (!IS_ERR(clk))
of_clk_add_provider(node, of_clk_src_simple_get, clk);
}