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-rw-r--r--include/linux/amba/bus.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 8b10386..b0c1740 100644
--- 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)