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authorTomeu Vizoso <tomeu.vizoso@collabora.com>2015-01-23 14:03:30 +0300
committerMichael Turquette <mturquette@linaro.org>2015-02-03 01:22:19 +0300
commit035a61c314eb3dab5bcc5683afaf4d412689858a (patch)
tree3c325fc76191cf1319c4a3399dfdd9f777033d6d /include/linux/clk-provider.h
parentaf0f349b2996f9f3d83e5aac1edf58fff727a0e0 (diff)
downloadlinux-035a61c314eb3dab5bcc5683afaf4d412689858a.tar.xz
clk: Make clk API return per-user struct clk instances
Moves clock state to struct clk_core, but takes care to change as little API as possible. struct clk_hw still has a pointer to a struct clk, which is the implementation's per-user clk instance, for backwards compatibility. The struct clk that clk_get_parent() returns isn't owned by the caller, but by the clock implementation, so the former shouldn't call clk_put() on it. Because some boards in mach-omap2 still register clocks statically, their clock registration had to be updated to take into account that the clock information is stored in struct clk_core now. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Michael Turquette <mturquette@linaro.org> [mturquette@linaro.org: adapted clk_has_parent to struct clk_core applied OMAP3+ DPLL fix from Tero & Tony]
Diffstat (limited to 'include/linux/clk-provider.h')
-rw-r--r--include/linux/clk-provider.h12
1 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 0ed5bf2209ad..12f13b0673af 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -33,6 +33,7 @@
#define CLK_GET_ACCURACY_NOCACHE BIT(8) /* do not use the cached clk accuracy */
struct clk_hw;
+struct clk_core;
struct dentry;
/**
@@ -216,13 +217,17 @@ struct clk_init_data {
* clk_foo and then referenced by the struct clk instance that uses struct
* clk_foo's clk_ops
*
- * @clk: pointer to the struct clk instance that points back to this struct
- * clk_hw instance
+ * @core: pointer to the struct clk_core instance that points back to this
+ * struct clk_hw instance
+ *
+ * @clk: pointer to the per-user struct clk instance that can be used to call
+ * into the clk API
*
* @init: pointer to struct clk_init_data that contains the init data shared
* with the common clock framework.
*/
struct clk_hw {
+ struct clk_core *core;
struct clk *clk;
const struct clk_init_data *init;
};
@@ -577,9 +582,6 @@ long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
/*
* FIXME clock api without lock protection
*/
-int __clk_prepare(struct clk *clk);
-void __clk_unprepare(struct clk *clk);
-void __clk_reparent(struct clk *clk, struct clk *new_parent);
unsigned long __clk_round_rate(struct clk *clk, unsigned long rate);
struct of_device_id;