summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorThomas Chou <thomas@wytron.com.tw>2015-09-30 20:56:53 +0800
committerThomas Chou <thomas@wytron.com.tw>2015-10-23 07:37:03 +0800
commitd21275ef5e7fe67c592896d6dbb157e219ec0450 (patch)
tree3440de477eabc39230f7af66114ffa9f234c626c /arch
parent15a56f9cb73fbf832e4ade37651605eb9662b388 (diff)
downloadu-boot-imx-d21275ef5e7fe67c592896d6dbb157e219ec0450.zip
u-boot-imx-d21275ef5e7fe67c592896d6dbb157e219ec0450.tar.gz
u-boot-imx-d21275ef5e7fe67c592896d6dbb157e219ec0450.tar.bz2
nios2: add clear and set bits macros
These macros can be used to clear and set multiple bits in a register using a single call. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Chin Liang See <clsee@altera.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/nios2/include/asm/io.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
index b4bd20f..2200dab 100644
--- a/arch/nios2/include/asm/io.h
+++ b/arch/nios2/include/asm/io.h
@@ -116,4 +116,59 @@ static inline void outsl (unsigned long port, const void *src, unsigned long cou
while (count--) outl (*p++, port);
}
+/*
+ * Clear and set bits in one shot. These macros can be used to clear and
+ * set multiple bits in a register using a single call. These macros can
+ * also be used to set a multiple-bit bit pattern using a mask, by
+ * specifying the mask in the 'clear' parameter and the new bit pattern
+ * in the 'set' parameter.
+ */
+
+#define out_arch(type,endian,a,v) __raw_write##type(cpu_to_##endian(v),a)
+#define in_arch(type,endian,a) endian##_to_cpu(__raw_read##type(a))
+
+#define out_le32(a,v) out_arch(l,le32,a,v)
+#define out_le16(a,v) out_arch(w,le16,a,v)
+
+#define in_le32(a) in_arch(l,le32,a)
+#define in_le16(a) in_arch(w,le16,a)
+
+#define out_be32(a,v) out_arch(l,be32,a,v)
+#define out_be16(a,v) out_arch(w,be16,a,v)
+
+#define in_be32(a) in_arch(l,be32,a)
+#define in_be16(a) in_arch(w,be16,a)
+
+#define out_8(a,v) __raw_writeb(v,a)
+#define in_8(a) __raw_readb(a)
+
+#define clrbits(type, addr, clear) \
+ out_##type((addr), in_##type(addr) & ~(clear))
+
+#define setbits(type, addr, set) \
+ out_##type((addr), in_##type(addr) | (set))
+
+#define clrsetbits(type, addr, clear, set) \
+ out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
+
+#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
+#define setbits_be32(addr, set) setbits(be32, addr, set)
+#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
+
+#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
+#define setbits_le32(addr, set) setbits(le32, addr, set)
+#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
+
+#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
+#define setbits_be16(addr, set) setbits(be16, addr, set)
+#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
+
+#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
+#define setbits_le16(addr, set) setbits(le16, addr, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
+
+#define clrbits_8(addr, clear) clrbits(8, addr, clear)
+#define setbits_8(addr, set) setbits(8, addr, set)
+#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
+
#endif /* __ASM_NIOS2_IO_H_ */