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Diffstat (limited to 'arch/mips/bcm63xx/gpio.c')
-rw-r--r--arch/mips/bcm63xx/gpio.c41
1 files changed, 36 insertions, 5 deletions
diff --git a/arch/mips/bcm63xx/gpio.c b/arch/mips/bcm63xx/gpio.c
index f560fe7d38dd..a6c2135dbf38 100644
--- a/arch/mips/bcm63xx/gpio.c
+++ b/arch/mips/bcm63xx/gpio.c
@@ -4,7 +4,7 @@
* for more details.
*
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
- * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
+ * Copyright (C) 2008-2011 Florian Fainelli <florian@openwrt.org>
*/
#include <linux/kernel.h>
@@ -18,6 +18,34 @@
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
+#ifndef BCMCPU_RUNTIME_DETECT
+#define gpio_out_low_reg GPIO_DATA_LO_REG
+#ifdef CONFIG_BCM63XX_CPU_6345
+#ifdef gpio_out_low_reg
+#undef gpio_out_low_reg
+#define gpio_out_low_reg GPIO_DATA_LO_REG_6345
+#endif /* gpio_out_low_reg */
+#endif /* CONFIG_BCM63XX_CPU_6345 */
+
+static inline void bcm63xx_gpio_out_low_reg_init(void)
+{
+}
+#else /* ! BCMCPU_RUNTIME_DETECT */
+static u32 gpio_out_low_reg;
+
+static void bcm63xx_gpio_out_low_reg_init(void)
+{
+ switch (bcm63xx_get_cpu_id()) {
+ case BCM6345_CPU_ID:
+ gpio_out_low_reg = GPIO_DATA_LO_REG_6345;
+ break;
+ default:
+ gpio_out_low_reg = GPIO_DATA_LO_REG;
+ break;
+ }
+}
+#endif /* ! BCMCPU_RUNTIME_DETECT */
+
static DEFINE_SPINLOCK(bcm63xx_gpio_lock);
static u32 gpio_out_low, gpio_out_high;
@@ -33,7 +61,7 @@ static void bcm63xx_gpio_set(struct gpio_chip *chip,
BUG();
if (gpio < 32) {
- reg = GPIO_DATA_LO_REG;
+ reg = gpio_out_low_reg;
mask = 1 << gpio;
v = &gpio_out_low;
} else {
@@ -60,7 +88,7 @@ static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio)
BUG();
if (gpio < 32) {
- reg = GPIO_DATA_LO_REG;
+ reg = gpio_out_low_reg;
mask = 1 << gpio;
} else {
reg = GPIO_DATA_HI_REG;
@@ -125,8 +153,11 @@ static struct gpio_chip bcm63xx_gpio_chip = {
int __init bcm63xx_gpio_init(void)
{
- gpio_out_low = bcm_gpio_readl(GPIO_DATA_LO_REG);
- gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG);
+ bcm63xx_gpio_out_low_reg_init();
+
+ gpio_out_low = bcm_gpio_readl(gpio_out_low_reg);
+ if (!BCMCPU_IS_6345())
+ gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG);
bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count();
pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio);