126 lines
2.8 KiB
Diff
126 lines
2.8 KiB
Diff
--- a/arch/arm/mach-ixp4xx/common.c
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+++ b/arch/arm/mach-ixp4xx/common.c
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@@ -36,6 +36,7 @@
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/irq.h>
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+#include <asm/gpio.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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@@ -374,12 +375,39 @@ static struct platform_device *ixp46x_de
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unsigned long ixp4xx_exp_bus_size;
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EXPORT_SYMBOL(ixp4xx_exp_bus_size);
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+static int ixp4xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
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+{
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+ gpio_line_config(gpio, IXP4XX_GPIO_IN);
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+ return 0;
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+}
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+EXPORT_SYMBOL(ixp4xx_gpio_direction_input);
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+
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+static int ixp4xx_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int level)
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+{
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+ gpio_line_set(gpio, level);
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+ gpio_line_config(gpio, IXP4XX_GPIO_OUT);
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+ return 0;
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+}
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+EXPORT_SYMBOL(ixp4xx_gpio_direction_output);
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+
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+static struct gpio_chip ixp4xx_gpio_chip = {
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+ .label = "IXP4XX_GPIO_CHIP",
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+ .direction_input = ixp4xx_gpio_direction_input,
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+ .direction_output = ixp4xx_gpio_direction_output,
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+ .get = gpio_get_value,
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+ .set = gpio_set_value,
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+ .base = 0,
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+ .ngpio = 16,
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+};
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+
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void __init ixp4xx_sys_init(void)
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{
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ixp4xx_exp_bus_size = SZ_16M;
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platform_add_devices(ixp4xx_devices, ARRAY_SIZE(ixp4xx_devices));
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+ gpiochip_add(&ixp4xx_gpio_chip);
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+
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if (cpu_is_ixp46x()) {
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int region;
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--- a/arch/arm/Kconfig
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+++ b/arch/arm/Kconfig
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@@ -375,6 +375,7 @@ config ARCH_IXP4XX
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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+ select ARCH_REQUIRE_GPIOLIB
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help
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Support for Intel's IXP4XX (XScale) family of processors.
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--- a/arch/arm/mach-ixp4xx/include/mach/gpio.h
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+++ b/arch/arm/mach-ixp4xx/include/mach/gpio.h
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@@ -27,47 +27,31 @@
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#include <linux/kernel.h>
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#include <mach/hardware.h>
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+#include <asm-generic/gpio.h> /* cansleep wrappers */
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-static inline int gpio_request(unsigned gpio, const char *label)
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-{
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- return 0;
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-}
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-
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-static inline void gpio_free(unsigned gpio)
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-{
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- might_sleep();
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-
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- return;
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-}
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-
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-static inline int gpio_direction_input(unsigned gpio)
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-{
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- gpio_line_config(gpio, IXP4XX_GPIO_IN);
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- return 0;
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-}
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-
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-static inline int gpio_direction_output(unsigned gpio, int level)
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-{
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- gpio_line_set(gpio, level);
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- gpio_line_config(gpio, IXP4XX_GPIO_OUT);
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- return 0;
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-}
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+#define NR_BUILTIN_GPIO 16
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static inline int gpio_get_value(unsigned gpio)
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{
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- int value;
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-
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- gpio_line_get(gpio, &value);
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-
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- return value;
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+ if (gpio < NR_BUILTIN_GPIO)
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+ {
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+ int value;
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+ gpio_line_get(gpio, &value);
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+ return value;
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+ }
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+ else
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+ return __gpio_get_value(gpio);
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}
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static inline void gpio_set_value(unsigned gpio, int value)
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{
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- gpio_line_set(gpio, value);
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+ if (gpio < NR_BUILTIN_GPIO)
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+ gpio_line_set(gpio, value);
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+ else
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+ __gpio_set_value(gpio, value);
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}
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-#include <asm-generic/gpio.h> /* cansleep wrappers */
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+#define gpio_cansleep __gpio_cansleep
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extern int gpio_to_irq(int gpio);
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extern int irq_to_gpio(int gpio);
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