From 9486190f3fabf8b68fd943ab814c16c303c4177b Mon Sep 17 00:00:00 2001
From: florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Thu, 4 Jun 2009 10:01:55 +0000
Subject: [PATCH] [brcm63xx] cache gpio values in gpio_set
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16330 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c b/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c
index 97e3730c3..77636aa86 100644
--- a/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c
+++ b/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c
@@ -18,12 +18,14 @@
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
+static u32 gpio_out_low, gpio_out_high;
+
static void bcm63xx_gpio_set(struct gpio_chip *chip,
unsigned gpio, int val)
{
u32 reg;
u32 mask;
- u32 tmp;
+ u32 *v;
unsigned long flags;
if (gpio >= chip->ngpio)
@@ -32,18 +34,19 @@ static void bcm63xx_gpio_set(struct gpio_chip *chip,
if (gpio < 32) {
reg = GPIO_DATA_LO_REG;
mask = 1 << gpio;
+ v = &gpio_out_low;
} else {
reg = GPIO_DATA_HI_REG;
mask = 1 << (gpio - 32);
+ v = &gpio_out_high;
}
local_irq_save(flags);
- tmp = bcm_gpio_readl(reg);
if (val)
- tmp |= mask;
+ *v |= mask;
else
- tmp &= ~mask;
- bcm_gpio_writel(tmp, reg);
+ *v &= ~mask;
+ bcm_gpio_writel(*v, reg);
local_irq_restore(flags);
}
--
2.20.1