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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-11 23:25:08 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-11 23:25:08 +0400
commit93874681aa3f538a2b9d59a6c5b7c0e882a36978 (patch)
tree6ec88fb9fb50e2b5e15b008e7353cc7d6395e1f8 /include/linux/clk-provider.h
parent505cbedab9c7c565957e64af6348e5d84acd510e (diff)
parent8f87189653d60656e262060665f52c855508a301 (diff)
downloadlinux-93874681aa3f538a2b9d59a6c5b7c0e882a36978.tar.xz
Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux
Pull clock framework changes from Mike Turquette: "The common clock framework changes for 3.8 are comprised of lots of fixes for existing platforms as well as new ports for some ARM platforms. In addition there are new clk drivers for audio devices and MFDs." Fix up trivial conflict in <linux/clk-provider.h> (removal of 'inline' clashing with return type fixes) * tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux: (51 commits) MAINTAINERS: bad email address for Mike Turquette clk: introduce optional disable_unused callback clk: ux500: fix bit error clk: clock multiplexers may register out of order clk: ux500: Initial support for abx500 clock driver CLK: SPEAr: Remove unused dummy apb_pclk CLK: SPEAr: Correct index scanning done for clock synths CLK: SPEAr: Update clock rate table CLK: SPEAr: Add missing clocks CLK: SPEAr: Set CLK_SET_RATE_PARENT for few clocks CLK: SPEAr13xx: fix parent names of multiple clocks CLK: SPEAr13xx: Fix mux clock names CLK: SPEAr: Fix dev_id & con_id for multiple clocks clk: move IM-PD1 clocks to drivers/clk clk: make ICST driver handle the VCO registers clk: add GPLv2 headers to the Versatile clock files clk: mxs: Use a better name for the USB PHY clock clk: spear: Add stub functions for spear3[0|1|2]0_clk_init() CLK: clk-twl6040: fix return value check in twl6040_clk_probe() clk: ux500: Register nomadik keypad clock lookups for u8500 ...
Diffstat (limited to 'include/linux/clk-provider.h')
-rw-r--r--include/linux/clk-provider.h24
1 files changed, 18 insertions, 6 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index f9f5e9eeb9dd..4989b8a7bed1 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -53,9 +53,18 @@ struct clk_hw;
* @disable: Disable the clock atomically. Called with enable_lock held.
* This function must not sleep.
*
- * @recalc_rate Recalculate the rate of this clock, by quering hardware. The
+ * @is_enabled: Queries the hardware to determine if the clock is enabled.
+ * This function must not sleep. Optional, if this op is not
+ * set then the enable count will be used.
+ *
+ * @disable_unused: Disable the clock atomically. Only called from
+ * clk_disable_unused for gate clocks with special needs.
+ * Called with enable_lock held. This function must not
+ * sleep.
+ *
+ * @recalc_rate Recalculate the rate of this clock, by querying hardware. The
* parent rate is an input parameter. It is up to the caller to
- * insure that the prepare_mutex is held across this call.
+ * ensure that the prepare_mutex is held across this call.
* Returns the calculated rate. Optional, but recommended - if
* this op is not set then clock rate will be initialized to 0.
*
@@ -89,7 +98,7 @@ struct clk_hw;
* implementations to split any work between atomic (enable) and sleepable
* (prepare) contexts. If enabling a clock requires code that might sleep,
* this must be done in clk_prepare. Clock enable code that will never be
- * called in a sleepable context may be implement in clk_enable.
+ * called in a sleepable context may be implemented in clk_enable.
*
* Typically, drivers will call clk_prepare when a clock may be needed later
* (eg. when a device is opened), and clk_enable when the clock is actually
@@ -102,6 +111,7 @@ struct clk_ops {
int (*enable)(struct clk_hw *hw);
void (*disable)(struct clk_hw *hw);
int (*is_enabled)(struct clk_hw *hw);
+ void (*disable_unused)(struct clk_hw *hw);
unsigned long (*recalc_rate)(struct clk_hw *hw,
unsigned long parent_rate);
long (*round_rate)(struct clk_hw *hw, unsigned long,
@@ -327,19 +337,21 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
* error code; drivers must test for an error code after calling clk_register.
*/
struct clk *clk_register(struct device *dev, struct clk_hw *hw);
+struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw);
void clk_unregister(struct clk *clk);
+void devm_clk_unregister(struct device *dev, struct clk *clk);
/* helper functions */
const char *__clk_get_name(struct clk *clk);
struct clk_hw *__clk_get_hw(struct clk *clk);
u8 __clk_get_num_parents(struct clk *clk);
struct clk *__clk_get_parent(struct clk *clk);
-int __clk_get_enable_count(struct clk *clk);
-int __clk_get_prepare_count(struct clk *clk);
+unsigned int __clk_get_enable_count(struct clk *clk);
+unsigned int __clk_get_prepare_count(struct clk *clk);
unsigned long __clk_get_rate(struct clk *clk);
unsigned long __clk_get_flags(struct clk *clk);
-int __clk_is_enabled(struct clk *clk);
+bool __clk_is_enabled(struct clk *clk);
struct clk *__clk_lookup(const char *name);
/*