[adm5120] convert to GPIOLIB

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12571 3c298f89-4303-0410-b956-a3cf2f4a3e73

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 aed003875..8143d31f6 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 6007693d7..7ba7efca1 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 334362c21..52c8c812f 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 4e05db860..bc07fbb2f 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 742f9ba5a..c340a678a 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