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ARM: UniPhier: add set_pinsel macro for use in assembly code

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The function sg_set_pinsel is useful for switching I/O pins
but it can be only used in C code.  This commit adds a simple
macro that is available in asm code.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit is contained in:
Masahiro Yamada 2014-11-07 21:08:52 +09:00
parent 495deb44f2
commit 2d5d1c9e29
1 changed files with 12 additions and 1 deletions
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13
arch/arm/include/asm/arch-uniphier/sg-regs.h
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@ -88,7 +88,18 @@
#define SG_PINMON0_CLK_MODE_AXOSEL_20480KHZ (0x2 << 16)
#define SG_PINMON0_CLK_MODE_AXOSEL_25000KHZ_A (0x3 << 16)
#ifndef __ASSEMBLY__
#ifdef __ASSEMBLY__
.macro set_pinsel, n, value, ra, rd
ldr \ra, =SG_PINSEL_ADDR(\n)
ldr \rd, [\ra]
and \rd, \rd, #SG_PINSEL_MASK(\n)
orr \rd, \rd, #SG_PINSEL_MODE(\n, \value)
str \rd, [\ra]
.endm
#else
#include <linux/types.h>
#include <asm/io.h>