From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Date: Fri, 14 Nov 2014 08:47:49 +0000 (+0100)
Subject: ARM: 8200/1: amba: Add helpers for (un)preparing AMBA clock v12
X-Git-Tag: v3.19-rc1~98^2~1^3~3
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f560e3229564a673603541ebfb36118d7cd98038;p=karo-tx-linux.git

ARM: 8200/1: amba: Add helpers for (un)preparing AMBA clock v12

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>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index c324f5700d1a..ac02f9bd63dc 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -97,6 +97,16 @@ 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)