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authorGabor Juhos <juhosg@openwrt.org>2008-09-12 12:41:29 +0000
committerGabor Juhos <juhosg@openwrt.org>2008-09-12 12:41:29 +0000
commit1abbb27f865a841a42f6f60db34d592c1a23c31a (patch)
treebe340ef61a74c7095cefe34c155fb49930938c60 /target/linux/adm5120
parent3601e8b9bb576ca62b99442b7d5c436705fbb521 (diff)
downloadmtk-20170518-1abbb27f865a841a42f6f60db34d592c1a23c31a.zip
mtk-20170518-1abbb27f865a841a42f6f60db34d592c1a23c31a.tar.gz
mtk-20170518-1abbb27f865a841a42f6f60db34d592c1a23c31a.tar.bz2
convert to GPIOLIB
SVN-Revision: 12571
Diffstat (limited to 'target/linux/adm5120')
-rw-r--r--target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/gpio.c365
-rw-r--r--target/linux/adm5120/files-2.6.26/include/asm-mips/mach-adm5120/gpio.h77
-rw-r--r--target/linux/adm5120/patches-2.6.26/001-adm5120.patch3
-rw-r--r--target/linux/adm5120/router_be/config-2.6.263
-rw-r--r--target/linux/adm5120/router_le/config-2.6.263
5 files changed, 210 insertions, 241 deletions
diff --git a/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/gpio.c b/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/gpio.c
index aed0038..8143d31 100644
--- a/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/gpio.c
+++ b/target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/gpio.c
@@ -1,5 +1,5 @@
/*
- * ADM5120 generic GPIO API support
+ * ADM5120 generic GPIO API support via GPIOLIB
*
* Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
*
@@ -25,60 +25,69 @@
#include <asm/mach-adm5120/adm5120_info.h>
#include <asm/mach-adm5120/adm5120_switch.h>
-#define GPIO_READ(r) __raw_readl((r))
-#define GPIO_WRITE(v, r) __raw_writel((v), (r))
-#define GPIO_REG(r) (void __iomem *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+r)
+#define GPIO_REG(r) (void __iomem *)(KSEG1ADDR(ADM5120_SWITCH_BASE) + r)
-struct adm5120_gpio_line {
- u32 flags;
- const char *label;
- int irq;
+struct gpio1_desc {
+ void __iomem *reg; /* register address */
+ u8 iv_shift; /* shift amount for input bit */
+ u8 mode_shift; /* shift amount for mode bits */
};
-#define GPIO_FLAG_VALID 0x01
-#define GPIO_FLAG_USED 0x02
-
-struct led_desc {
- void __iomem *reg; /* LED register address */
- u8 iv_shift; /* shift amount for input bit */
- u8 mode_shift; /* shift amount for mode bits */
-};
-
-#define LED_DESC(p, l) { \
- .reg = GPIO_REG(SWITCH_REG_PORT0_LED+((p) * 4)), \
- .iv_shift = LED0_IV_SHIFT + (l), \
- .mode_shift = (l) * 4 \
+#define GPIO1_DESC(p, l) { \
+ .reg = GPIO_REG(SWITCH_REG_PORT0_LED + ((p) * 4)), \
+ .iv_shift = LED0_IV_SHIFT + (l), \
+ .mode_shift = (l) * 4 \
}
-static struct led_desc led_table[15] = {
- LED_DESC(0, 0), LED_DESC(0, 1), LED_DESC(0, 2),
- LED_DESC(1, 0), LED_DESC(1, 1), LED_DESC(1, 2),
- LED_DESC(2, 0), LED_DESC(2, 1), LED_DESC(2, 2),
- LED_DESC(3, 0), LED_DESC(3, 1), LED_DESC(3, 2),
- LED_DESC(4, 0), LED_DESC(4, 1), LED_DESC(4, 2)
+static struct gpio1_desc gpio1_table[15] = {
+ GPIO1_DESC(0, 0), GPIO1_DESC(0, 1), GPIO1_DESC(0, 2),
+ GPIO1_DESC(1, 0), GPIO1_DESC(1, 1), GPIO1_DESC(1, 2),
+ GPIO1_DESC(2, 0), GPIO1_DESC(2, 1), GPIO1_DESC(2, 2),
+ GPIO1_DESC(3, 0), GPIO1_DESC(3, 1), GPIO1_DESC(3, 2),
+ GPIO1_DESC(4, 0), GPIO1_DESC(4, 1), GPIO1_DESC(4, 2)
};
-static struct adm5120_gpio_line adm5120_gpio_map[ADM5120_GPIO_COUNT];
-
static u32 gpio_conf2;
-/*-------------------------------------------------------------------------*/
-
-static inline int gpio_is_invalid(unsigned gpio)
+int adm5120_gpio_to_irq(unsigned gpio)
{
- if ((gpio > ADM5120_GPIO_MAX) ||
- (adm5120_gpio_map[gpio].flags & GPIO_FLAG_VALID) == 0)
- return 1;
+ int ret;
- return 0;
+ switch (gpio) {
+ case ADM5120_GPIO_PIN2:
+ ret = ADM5120_IRQ_GPIO2;
+ break;
+ case ADM5120_GPIO_PIN4:
+ ret = ADM5120_IRQ_GPIO4;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
}
+EXPORT_SYMBOL(adm5120_gpio_to_irq);
-static inline int gpio_is_used(unsigned gpio)
+int adm5120_irq_to_gpio(unsigned irq)
{
- return ((adm5120_gpio_map[gpio].flags & GPIO_FLAG_USED) != 0);
-}
+ int ret;
+
+ switch (irq) {
+ case ADM5120_IRQ_GPIO2:
+ ret = ADM5120_GPIO_PIN2;
+ break;
+ case ADM5120_IRQ_GPIO4:
+ ret = ADM5120_GPIO_PIN4;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
-/*-------------------------------------------------------------------------*/
+ return ret;
+}
+EXPORT_SYMBOL(adm5120_irq_to_gpio);
/*
* Helpers for GPIO lines in GPIO_CONF0 register
@@ -88,97 +97,125 @@ static inline int gpio_is_used(unsigned gpio)
#define PIN_OE(p) ((1 << GPIO_CONF0_OE_SHIFT) << p)
#define PIN_OV(p) ((1 << GPIO_CONF0_OV_SHIFT) << p)
-static inline int pins_direction_input(unsigned pin)
+int __adm5120_gpio0_get_value(unsigned offset)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
- t = GPIO_READ(reg);
- t &= ~(PIN_OE(pin));
- t |= PIN_IM(pin);
- GPIO_WRITE(t, reg);
+ t = __raw_readl(reg);
+ if ((t & PIN_IM(offset)) != 0)
+ t &= PIN_IV(offset);
+ else
+ t &= PIN_OV(offset);
- return 0;
+ return (t) ? 1 : 0;
}
+EXPORT_SYMBOL(__adm5120_gpio0_get_value);
-static inline int pins_direction_output(unsigned pin, int value)
+void __adm5120_gpio0_set_value(unsigned offset, int value)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
- t = GPIO_READ(reg);
- t &= ~(PIN_IM(pin) | PIN_OV(pin));
- t |= PIN_OE(pin);
+ t = __raw_readl(reg);
+ if (value == 0)
+ t &= ~(PIN_OV(offset));
+ else
+ t |= PIN_OV(offset);
- if (value)
- t |= PIN_OV(pin);
+ __raw_writel(t, reg);
+}
+EXPORT_SYMBOL(__adm5120_gpio0_set_value);
- GPIO_WRITE(t, reg);
+static int adm5120_gpio0_get_value(struct gpio_chip *chip, unsigned offset)
+{
+ return __adm5120_gpio0_get_value(offset);
+}
- return 0;
+static void adm5120_gpio0_set_value(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ __adm5120_gpio0_set_value(offset, value);
}
-static inline int pins_get_value(unsigned pin)
+static int adm5120_gpio0_direction_input(struct gpio_chip *chip,
+ unsigned offset)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
- t = GPIO_READ(reg);
- if ((t & PIN_IM(pin)) != 0)
- t &= PIN_IV(pin);
- else
- t &= PIN_OV(pin);
+ t = __raw_readl(reg);
+ t &= ~(PIN_OE(offset));
+ t |= PIN_IM(offset);
+ __raw_writel(t, reg);
- return (t) ? 1 : 0;
+ return 0;
}
-static inline void pins_set_value(unsigned pin, int value)
+static int adm5120_gpio0_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
- t = GPIO_READ(reg);
- if (value == 0)
- t &= ~(PIN_OV(pin));
- else
- t |= PIN_OV(pin);
+ t = __raw_readl(reg);
+ t &= ~(PIN_IM(offset) | PIN_OV(offset));
+ t |= PIN_OE(offset);
+
+ if (value)
+ t |= PIN_OV(offset);
- GPIO_WRITE(t, reg);
+ __raw_writel(t, reg);
+
+ return 0;
}
-/*
- * Helpers for GPIO lines in PORTx_LED registers
- */
-static inline int leds_direction_input(unsigned led)
+static struct gpio_chip adm5120_gpio0_chip = {
+ .label = "adm5120 gpio0",
+ .get = adm5120_gpio0_get_value,
+ .set = adm5120_gpio0_set_value,
+ .direction_input = adm5120_gpio0_direction_input,
+ .direction_output = adm5120_gpio0_direction_output,
+ .base = ADM5120_GPIO_PIN0,
+ .ngpio = ADM5120_GPIO_PIN7 - ADM5120_GPIO_PIN0 + 1,
+};
+
+int __adm5120_gpio1_get_value(unsigned offset)
{
void __iomem **reg;
- u32 t;
+ u32 t, m;
- reg = led_table[led].reg;
- t = GPIO_READ(reg);
- t &= ~(LED_MODE_MASK << led_table[led].mode_shift);
- GPIO_WRITE(t, reg);
+ reg = gpio1_table[offset].reg;
- return 0;
+ t = __raw_readl(reg);
+ m = (t >> gpio1_table[offset].mode_shift) & LED_MODE_MASK;
+ if (m == LED_MODE_INPUT)
+ return (t >> gpio1_table[offset].iv_shift) & 1;
+
+ if (m == LED_MODE_OUT_LOW)
+ return 0;
+
+ return 1;
}
+EXPORT_SYMBOL(__adm5120_gpio1_get_value);
-static inline int leds_direction_output(unsigned led, int value)
+void __adm5120_gpio1_set_value(unsigned offset, int value)
{
void __iomem **reg;
u32 t, s;
- reg = led_table[led].reg;
- s = led_table[led].mode_shift;
+ reg = gpio1_table[offset].reg;
+ s = gpio1_table[offset].mode_shift;
- t = GPIO_READ(reg);
+ t = __raw_readl(reg);
t &= ~(LED_MODE_MASK << s);
switch (value) {
@@ -202,137 +239,58 @@ static inline int leds_direction_output(unsigned led, int value)
break;
}
- GPIO_WRITE(t, reg);
-
- return 0;
-}
-
-static inline int leds_get_value(unsigned led)
-{
- void __iomem **reg;
- u32 t, m;
-
- reg = led_table[led].reg;
-
- t = GPIO_READ(reg);
- m = (t >> led_table[led].mode_shift) & LED_MODE_MASK;
- if (m == LED_MODE_INPUT)
- return (t >> led_table[led].iv_shift) & 1;
-
- if (m == LED_MODE_OUT_LOW)
- return 0;
-
- return 1;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Main GPIO support routines
- */
-int adm5120_gpio_direction_input(unsigned gpio)
-{
- if (gpio_is_invalid(gpio))
- return -EINVAL;
-
- if (gpio < ADM5120_GPIO_P0L0)
- return pins_direction_input(gpio);
-
- gpio -= ADM5120_GPIO_P0L0;
- return leds_direction_input(gpio);
+ __raw_writel(t, reg);
}
-EXPORT_SYMBOL(adm5120_gpio_direction_input);
+EXPORT_SYMBOL(__adm5120_gpio1_set_value);
-int adm5120_gpio_direction_output(unsigned gpio, int value)
+static int adm5120_gpio1_get_value(struct gpio_chip *chip, unsigned offset)
{
- if (gpio_is_invalid(gpio))
- return -EINVAL;
-
- if (gpio < ADM5120_GPIO_P0L0)
- return pins_direction_output(gpio, value);
-
- gpio -= ADM5120_GPIO_P0L0;
- return leds_direction_output(gpio, value);
+ return __adm5120_gpio1_get_value(offset);
}
-EXPORT_SYMBOL(adm5120_gpio_direction_output);
-int adm5120_gpio_get_value(unsigned gpio)
+static void adm5120_gpio1_set_value(struct gpio_chip *chip,
+ unsigned offset, int value)
{
- if (gpio < ADM5120_GPIO_P0L0)
- return pins_get_value(gpio);
-
- gpio -= ADM5120_GPIO_P0L0;
- return leds_get_value(gpio);
+ __adm5120_gpio1_set_value(offset, value);
}
-EXPORT_SYMBOL(adm5120_gpio_get_value);
-void adm5120_gpio_set_value(unsigned gpio, int value)
+static int adm5120_gpio1_direction_input(struct gpio_chip *chip,
+ unsigned offset)
{
- if (gpio < ADM5120_GPIO_P0L0) {
- pins_set_value(gpio, value);
- return;
- }
-
- gpio -= ADM5120_GPIO_P0L0;
- leds_direction_output(gpio, value);
-}
-EXPORT_SYMBOL(adm5120_gpio_set_value);
-
-int adm5120_gpio_request(unsigned gpio, const char *label)
-{
- if (gpio_is_invalid(gpio))
- return -EINVAL;
-
- if (gpio_is_used(gpio))
- return -EBUSY;
+ void __iomem **reg;
+ u32 t;
- adm5120_gpio_map[gpio].flags |= GPIO_FLAG_USED;
- adm5120_gpio_map[gpio].label = label;
+ reg = gpio1_table[offset].reg;
+ t = __raw_readl(reg);
+ t &= ~(LED_MODE_MASK << gpio1_table[offset].mode_shift);
+ __raw_writel(t, reg);
return 0;
}
-EXPORT_SYMBOL(adm5120_gpio_request);
-void adm5120_gpio_free(unsigned gpio)
+static int adm5120_gpio1_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
{
- if (gpio_is_invalid(gpio))
- return;
-
- adm5120_gpio_map[gpio].flags &= ~GPIO_FLAG_USED;
- adm5120_gpio_map[gpio].label = NULL;
-}
-EXPORT_SYMBOL(adm5120_gpio_free);
-
-int adm5120_gpio_to_irq(unsigned gpio)
-{
- if (gpio > ADM5120_GPIO_MAX)
- return -EINVAL;
-
- return adm5120_gpio_map[gpio].irq;
-}
-EXPORT_SYMBOL(adm5120_gpio_to_irq);
-
-int adm5120_irq_to_gpio(unsigned irq)
-{
- int i;
-
- for (i = 0; i < ADM5120_GPIO_COUNT; i++)
- if (adm5120_gpio_map[i].irq == irq)
- return i;
-
- return -EINVAL;
+ __adm5120_gpio1_set_value(offset, value);
+ return 0;
}
-EXPORT_SYMBOL(adm5120_irq_to_gpio);
-/*-------------------------------------------------------------------------*/
+static struct gpio_chip adm5120_gpio1_chip = {
+ .label = "adm5120 gpio1",
+ .get = adm5120_gpio1_get_value,
+ .set = adm5120_gpio1_set_value,
+ .direction_input = adm5120_gpio1_direction_input,
+ .direction_output = adm5120_gpio1_direction_output,
+ .base = ADM5120_GPIO_P0L0,
+ .ngpio = ADM5120_GPIO_P4L2 - ADM5120_GPIO_P0L0 + 1,
+};
void __init adm5120_gpio_csx0_enable(void)
{
gpio_conf2 |= GPIO_CONF2_CSX0;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
- adm5120_gpio_map[ADM5120_GPIO_PIN1].flags &= ~GPIO_FLAG_VALID;
- adm5120_gpio_map[ADM5120_GPIO_PIN2].irq = ADM5120_IRQ_GPIO2;
+ gpio_request(ADM5120_GPIO_PIN1, "CSX0");
}
void __init adm5120_gpio_csx1_enable(void)
@@ -340,9 +298,7 @@ void __init adm5120_gpio_csx1_enable(void)
gpio_conf2 |= GPIO_CONF2_CSX1;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
- adm5120_gpio_map[ADM5120_GPIO_PIN3].flags &= ~GPIO_FLAG_VALID;
- if (adm5120_package_bga())
- adm5120_gpio_map[ADM5120_GPIO_PIN4].irq = ADM5120_IRQ_GPIO4;
+ gpio_request(ADM5120_GPIO_PIN3, "CSX1");
}
void __init adm5120_gpio_ew_enable(void)
@@ -350,23 +306,26 @@ void __init adm5120_gpio_ew_enable(void)
gpio_conf2 |= GPIO_CONF2_EW;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
- adm5120_gpio_map[ADM5120_GPIO_PIN0].flags &= ~GPIO_FLAG_VALID;
+ gpio_request(ADM5120_GPIO_PIN0, "EW");
}
void __init adm5120_gpio_init(void)
{
- int i;
+ int err;
- gpio_conf2 = 0;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
- for (i = 0; i < ADM5120_GPIO_COUNT; i++)
- adm5120_gpio_map[i].flags = GPIO_FLAG_VALID;
-
if (adm5120_package_pqfp()) {
- adm5120_gpio_map[ADM5120_GPIO_PIN4].flags &= ~GPIO_FLAG_VALID;
- adm5120_gpio_map[ADM5120_GPIO_PIN5].flags &= ~GPIO_FLAG_VALID;
- adm5120_gpio_map[ADM5120_GPIO_PIN6].flags &= ~GPIO_FLAG_VALID;
- adm5120_gpio_map[ADM5120_GPIO_PIN7].flags &= ~GPIO_FLAG_VALID;
+ gpiochip_reserve(ADM5120_GPIO_PIN4, 4);
+ adm5120_gpio0_chip.ngpio = 4;
}
+
+ err = gpiochip_add(&adm5120_gpio0_chip);
+ if (err)
+ panic("cannot add ADM5120 GPIO0 chip, error=%d", err);
+
+ err = gpiochip_add(&adm5120_gpio1_chip);
+ if (err)
+ panic("cannot add ADM5120 GPIO1 chip, error=%d", err);
+
}
diff --git a/target/linux/adm5120/files-2.6.26/include/asm-mips/mach-adm5120/gpio.h b/target/linux/adm5120/files-2.6.26/include/asm-mips/mach-adm5120/gpio.h
index 6007693..7ba7efc 100644
--- a/target/linux/adm5120/files-2.6.26/include/asm-mips/mach-adm5120/gpio.h
+++ b/target/linux/adm5120/files-2.6.26/include/asm-mips/mach-adm5120/gpio.h
@@ -9,8 +9,12 @@
*
*/
-#ifndef _ASM_MACH_ADM5120_GPIO_H
-#define _ASM_MACH_ADM5120_GPIO_H
+#ifndef _ASM_MIPS_MACH_ADM5120_GPIO_H
+#define _ASM_MIPS_MACH_ADM5120_GPIO_H
+
+#define ARCH_NR_GPIOS 64
+
+#include <asm-generic/gpio.h>
#include <asm/mach-adm5120/adm5120_switch.h>
@@ -55,46 +59,45 @@
#define ADM5120_GPIO_10M_ACT (ADM5120_GPIO_SWITCH | LED_MODE_10M_ACT)
#define ADM5120_GPIO_100M_ACT (ADM5120_GPIO_SWITCH | LED_MODE_100M_ACT)
-extern int adm5120_gpio_direction_input(unsigned gpio);
-extern int adm5120_gpio_direction_output(unsigned gpio, int value);
-extern int adm5120_gpio_get_value(unsigned gpio);
-extern void adm5120_gpio_set_value(unsigned gpio, int value);
-extern int adm5120_gpio_request(unsigned gpio, const char *label);
-extern void adm5120_gpio_free(unsigned gpio);
-extern int adm5120_gpio_to_irq(unsigned gpio);
-extern int adm5120_irq_to_gpio(unsigned irq);
-
-/*
- * Wrappers for the generic GPIO layer
- */
-static inline int gpio_direction_input(unsigned gpio)
-{
- return adm5120_gpio_direction_input(gpio);
-}
-
-static inline int gpio_direction_output(unsigned gpio, int value)
-{
- return adm5120_gpio_direction_output(gpio,value);
-}
+extern int __adm5120_gpio0_get_value(unsigned gpio);
+extern void __adm5120_gpio0_set_value(unsigned gpio, int value);
+extern int __adm5120_gpio1_get_value(unsigned gpio);
+extern void __adm5120_gpio1_set_value(unsigned gpio, int value);
+extern int adm5120_gpio_to_irq(unsigned gpio);
+extern int adm5120_irq_to_gpio(unsigned irq);
static inline int gpio_get_value(unsigned gpio)
{
- return adm5120_gpio_get_value(gpio);
+ int ret;
+
+ switch (gpio) {
+ case ADM5120_GPIO_PIN0 ... ADM5120_GPIO_PIN7:
+ ret = __adm5120_gpio0_get_value(gpio);
+ break;
+ case ADM5120_GPIO_P0L0 ... ADM5120_GPIO_P4L2:
+ ret = __adm5120_gpio1_get_value(gpio - ADM5120_GPIO_P0L0);
+ break;
+ default:
+ ret = __gpio_get_value(gpio);
+ break;
+ }
+
+ return ret;
}
static inline void gpio_set_value(unsigned gpio, int value)
{
- adm5120_gpio_set_value(gpio, value);
-}
-
-static inline int gpio_request(unsigned gpio, const char *label)
-{
- return adm5120_gpio_request(gpio, label);
-}
-
-static inline void gpio_free(unsigned gpio)
-{
- adm5120_gpio_free(gpio);
+ switch (gpio) {
+ case ADM5120_GPIO_PIN0 ... ADM5120_GPIO_PIN7:
+ __adm5120_gpio0_set_value(gpio, value);
+ break;
+ case ADM5120_GPIO_P0L0 ... ADM5120_GPIO_P4L2:
+ __adm5120_gpio1_set_value(gpio - ADM5120_GPIO_P0L0, value);
+ break;
+ default:
+ __gpio_set_value(gpio, value);
+ break;
+ }
}
static inline int gpio_to_irq(unsigned gpio)
@@ -107,6 +110,6 @@ static inline int irq_to_gpio(unsigned irq)
return adm5120_irq_to_gpio(irq);
}
-#include <asm-generic/gpio.h> /* cansleep wrappers */
+#define gpio_cansleep __gpio_cansleep
-#endif /* _ASM_MACH_ADM5120_GPIO_H */
+#endif /* _ASM_MIPS_MACH_ADM5120_GPIO_H */
diff --git a/target/linux/adm5120/patches-2.6.26/001-adm5120.patch b/target/linux/adm5120/patches-2.6.26/001-adm5120.patch
index 334362c..52c8c81 100644
--- a/target/linux/adm5120/patches-2.6.26/001-adm5120.patch
+++ b/target/linux/adm5120/patches-2.6.26/001-adm5120.patch
@@ -1,6 +1,6 @@
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
-@@ -18,6 +18,20 @@
+@@ -18,6 +18,21 @@
prompt "System type"
default SGI_IP22
@@ -16,6 +16,7 @@
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select GENERIC_GPIO
++ select HAVE_GPIO_LIB
+ select SWAP_IO_SPACE if CPU_BIG_ENDIAN
+
config MACH_ALCHEMY
diff --git a/target/linux/adm5120/router_be/config-2.6.26 b/target/linux/adm5120/router_be/config-2.6.26
index 4e05db8..bc07fbb 100644
--- a/target/linux/adm5120/router_be/config-2.6.26
+++ b/target/linux/adm5120/router_be/config-2.6.26
@@ -83,10 +83,13 @@ CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
+# CONFIG_GPIO_MCP23S08 is not set
+CONFIG_GPIO_SYSFS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
# CONFIG_HAVE_DMA_ATTRS is not set
+CONFIG_HAVE_GPIO_LIB=y
CONFIG_HAVE_IDE=y
# CONFIG_HAVE_KPROBES is not set
# CONFIG_HAVE_KRETPROBES is not set
diff --git a/target/linux/adm5120/router_le/config-2.6.26 b/target/linux/adm5120/router_le/config-2.6.26
index 742f9ba..c340a67 100644
--- a/target/linux/adm5120/router_le/config-2.6.26
+++ b/target/linux/adm5120/router_le/config-2.6.26
@@ -104,10 +104,13 @@ CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
+# CONFIG_GPIO_MCP23S08 is not set
+CONFIG_GPIO_SYSFS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
# CONFIG_HAVE_DMA_ATTRS is not set
+CONFIG_HAVE_GPIO_LIB=y
CONFIG_HAVE_IDE=y
# CONFIG_HAVE_KPROBES is not set
# CONFIG_HAVE_KRETPROBES is not set