diff mbox

[U-Boot,v2] nios2: add clear and set bits macros

Message ID 1443619947-13562-1-git-send-email-thomas@wytron.com.tw
State Accepted, archived
Delegated to: Thomas Chou
Headers show

Commit Message

Thomas Chou Sept. 30, 2015, 1:32 p.m. UTC 
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>
---
v2
  remove unsupported 64 btis macros as Chin Liang suggested.

 arch/nios2/include/asm/io.h | 55 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

Comments

Chin Liang See Oct. 1, 2015, 12:18 a.m. UTC | #1 
Hi Thomas,

On Wed, 2015-09-30 at 21:32 +0800, thomas@wytron.com.tw wrote:
> 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>
> ---
> v2
>   remove unsupported 64 btis macros as Chin Liang suggested.
> 

Acked-by: Chin Liang See <clsee@altera.com>

Thanks
Chin Liang
Thomas Chou Oct. 3, 2015, 1:09 p.m. UTC | #2 
On 09/30/2015 09:32 PM, Thomas Chou wrote:
> 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>
> ---
> v2
>    remove unsupported 64 btis macros as Chin Liang suggested.
>
>   arch/nios2/include/asm/io.h | 55 +++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 55 insertions(+)
>

Applied to u-boot-nios.
diff mbox

Patch

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_ */