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Subject[PATCH v11 2/6] amba: Add helpers for (un)preparing AMBA clock
Date
Add amba_pclk_prepare() and amba_pclk_unprepare() inline functions for
handling the AMBA bus clock by device drivers.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
---
include/linux/amba/bus.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index d024bd9c9d9b..2afc618b15ce 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -98,6 +98,16 @@ void amba_release_regions(struct amba_device *);
#define amba_pclk_disable(d) \
do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)

+static inline int amba_pclk_prepare(struct amba_device *dev)
+{
+ return clk_prepare(dev->pclk);
+}
+
+static inline void amba_pclk_unprepare(struct amba_device *dev)
+{
+ clk_unprepare(dev->pclk);
+}
+
/* Some drivers don't use the struct amba_device */
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
--
1.9.1


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