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authorAndrew Lunn <andrew@lunn.ch>2011-05-15 13:32:52 +0200
committerNicolas Pitre <nico@fluxnic.net>2011-05-16 15:25:54 -0400
commitb2f427a1088a9ad4f86855f4df1fc059bebb441f (patch)
tree61508b83eabb956e6ab1255110689485151872b3 /arch/arm/mach-mv78xx0/mpp.c
parent44350061905b2a502579d3827eacaf8efa393aad (diff)
downloadlinux-linaro-stable-b2f427a1088a9ad4f86855f4df1fc059bebb441f.tar.gz
ARM: orion: Refactor the MPP code common in the orion platform
mv78xx0 and kirkwood use identical mpp code. It should also be possible to rewrite the orion5x mpp to use this platform code. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Diffstat (limited to 'arch/arm/mach-mv78xx0/mpp.c')
-rw-r--r--arch/arm/mach-mv78xx0/mpp.c58
1 files changed, 3 insertions, 55 deletions
diff --git a/arch/arm/mach-mv78xx0/mpp.c b/arch/arm/mach-mv78xx0/mpp.c
index 65b72c454cb0..59b7686b9209 100644
--- a/arch/arm/mach-mv78xx0/mpp.c
+++ b/arch/arm/mach-mv78xx0/mpp.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/mbus.h>
#include <linux/io.h>
+#include <plat/mpp.h>
#include <asm/gpio.h>
#include <mach/hardware.h>
#include "common.h"
@@ -31,61 +32,8 @@ static unsigned int __init mv78xx0_variant(void)
return 0;
}
-#define MPP_CTRL(i) (DEV_BUS_VIRT_BASE + (i) * 4)
-#define MPP_NR_REGS (1 + MPP_MAX/8)
-
void __init mv78xx0_mpp_conf(unsigned int *mpp_list)
{
- u32 mpp_ctrl[MPP_NR_REGS];
- unsigned int variant_mask;
- int i;
-
- variant_mask = mv78xx0_variant();
- if (!variant_mask)
- return;
-
- printk(KERN_DEBUG "initial MPP regs:");
- for (i = 0; i < MPP_NR_REGS; i++) {
- mpp_ctrl[i] = readl(MPP_CTRL(i));
- printk(" %08x", mpp_ctrl[i]);
- }
- printk("\n");
-
- for ( ; *mpp_list; mpp_list++) {
- unsigned int num = MPP_NUM(*mpp_list);
- unsigned int sel = MPP_SEL(*mpp_list);
- int shift, gpio_mode;
-
- if (num > MPP_MAX) {
- printk(KERN_ERR "mv78xx0_mpp_conf: invalid MPP "
- "number (%u)\n", num);
- continue;
- }
- if (!(*mpp_list & variant_mask)) {
- printk(KERN_WARNING
- "mv78xx0_mpp_conf: requested MPP%u config "
- "unavailable on this hardware\n", num);
- continue;
- }
-
- shift = (num & 7) << 2;
- mpp_ctrl[num / 8] &= ~(0xf << shift);
- mpp_ctrl[num / 8] |= sel << shift;
-
- gpio_mode = 0;
- if (*mpp_list & MPP_INPUT_MASK)
- gpio_mode |= GPIO_INPUT_OK;
- if (*mpp_list & MPP_OUTPUT_MASK)
- gpio_mode |= GPIO_OUTPUT_OK;
- if (sel != 0)
- gpio_mode = 0;
- orion_gpio_set_valid(num, gpio_mode);
- }
-
- printk(KERN_DEBUG " final MPP regs:");
- for (i = 0; i < MPP_NR_REGS; i++) {
- writel(mpp_ctrl[i], MPP_CTRL(i));
- printk(" %08x", mpp_ctrl[i]);
- }
- printk("\n");
+ orion_mpp_conf(mpp_list, mv78xx0_variant(),
+ MPP_MAX, DEV_BUS_VIRT_BASE);
}