ARM: AMBA: Add pclk support to AMBA bus infrastructure

[mv-sheeva.git] / include / linux / amba / bus.h

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 8b1038607831360ed621ddb5542c9f686338758e..b0c1740124365979f9e6e50a0671bf217206bdda 100644 (file)
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -14,14 +14,19 @@
 #ifndef ASMARM_AMBA_H
 #define ASMARM_AMBA_H
 
+#include <linux/clk.h>
 #include <linux/device.h>
+#include <linux/err.h>
 #include <linux/resource.h>
 
 #define AMBA_NR_IRQS   2
 
+struct clk;
+
 struct amba_device {
        struct device           dev;
        struct resource         res;
+       struct clk              *pclk;
        u64                     dma_mask;
        unsigned int            periphid;
        unsigned int            irq[AMBA_NR_IRQS];
@@ -59,6 +64,12 @@ struct amba_device *amba_find_device(const char *, struct device *, unsigned int
 int amba_request_regions(struct amba_device *, const char *);
 void amba_release_regions(struct amba_device *);
 
+#define amba_pclk_enable(d)    \
+       (IS_ERR((d)->pclk) ? 0 : clk_enable((d)->pclk))
+
+#define amba_pclk_disable(d)   \
+       do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
+
 #define amba_config(d) (((d)->periphid >> 24) & 0xff)
 #define amba_rev(d)    (((d)->periphid >> 20) & 0x0f)
 #define amba_manf(d)   (((d)->periphid >> 12) & 0xff)