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authorLinus Walleij <linus.walleij@stericsson.com>2010-09-07 22:43:19 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-10-08 10:02:27 +0100
commit01723a9566f9e9ce4c75e5c4c9f6dc20600871a7 (patch)
treeee80f7c5d7e9b8b02e9b6b882921ea0132d8cb92
parent2da6d64a638eb982bebf34e2999f0b67cfb90f33 (diff)
ARM: 6368/1: move the PrimeCell IDs to use macros
This make four macros for the PrimeCell ID register available to drivers that use them witout using the PrimeCell/AMBA bus abstraction and struct amba_device. It also moves the magic PrimeCell CID "B105F00D" to the bus.h header file. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--drivers/amba/bus.c2
-rw-r--r--include/linux/amba/bus.h15
2 files changed, 12 insertions, 5 deletions
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index d31590e7011b..2737b9752205 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -298,7 +298,7 @@ int amba_device_register(struct amba_device *dev, struct resource *parent)
amba_put_disable_pclk(dev);
- if (cid == 0xb105f00d)
+ if (cid == AMBA_CID)
dev->periphid = pid;
if (!dev->periphid)
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index b0c174012436..c6454cca0447 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -20,6 +20,7 @@
#include <linux/resource.h>
#define AMBA_NR_IRQS 2
+#define AMBA_CID 0xb105f00d
struct clk;
@@ -70,9 +71,15 @@ void amba_release_regions(struct amba_device *);
#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)
-#define amba_part(d) ((d)->periphid & 0xfff)
+/* 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)
+#define AMBA_MANF_BITS(a) (((a) >> 12) & 0xff)
+#define AMBA_PART_BITS(a) ((a) & 0xfff)
+
+#define amba_config(d) AMBA_CONFIG_BITS((d)->periphid)
+#define amba_rev(d) AMBA_REV_BITS((d)->periphid)
+#define amba_manf(d) AMBA_MANF_BITS((d)->periphid)
+#define amba_part(d) AMBA_PART_BITS((d)->periphid)
#endif