| 1 | --- a/arch/arm/mach-ixp4xx/common.c |
| 2 | +++ b/arch/arm/mach-ixp4xx/common.c |
| 3 | @@ -36,6 +36,7 @@ |
| 4 | #include <asm/pgtable.h> |
| 5 | #include <asm/page.h> |
| 6 | #include <asm/irq.h> |
| 7 | +#include <asm/gpio.h> |
| 8 | |
| 9 | #include <asm/mach/map.h> |
| 10 | #include <asm/mach/irq.h> |
| 11 | @@ -375,12 +376,39 @@ static struct platform_device *ixp46x_de |
| 12 | unsigned long ixp4xx_exp_bus_size; |
| 13 | EXPORT_SYMBOL(ixp4xx_exp_bus_size); |
| 14 | |
| 15 | +static int ixp4xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) |
| 16 | +{ |
| 17 | + gpio_line_config(gpio, IXP4XX_GPIO_IN); |
| 18 | + return 0; |
| 19 | +} |
| 20 | +EXPORT_SYMBOL(ixp4xx_gpio_direction_input); |
| 21 | + |
| 22 | +static int ixp4xx_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int level) |
| 23 | +{ |
| 24 | + gpio_line_set(gpio, level); |
| 25 | + gpio_line_config(gpio, IXP4XX_GPIO_OUT); |
| 26 | + return 0; |
| 27 | +} |
| 28 | +EXPORT_SYMBOL(ixp4xx_gpio_direction_output); |
| 29 | + |
| 30 | +static struct gpio_chip ixp4xx_gpio_chip = { |
| 31 | + .label = "IXP4XX_GPIO_CHIP", |
| 32 | + .direction_input = ixp4xx_gpio_direction_input, |
| 33 | + .direction_output = ixp4xx_gpio_direction_output, |
| 34 | + .get = gpio_get_value, |
| 35 | + .set = gpio_set_value, |
| 36 | + .base = 0, |
| 37 | + .ngpio = 16, |
| 38 | +}; |
| 39 | + |
| 40 | void __init ixp4xx_sys_init(void) |
| 41 | { |
| 42 | ixp4xx_exp_bus_size = SZ_16M; |
| 43 | |
| 44 | platform_add_devices(ixp4xx_devices, ARRAY_SIZE(ixp4xx_devices)); |
| 45 | |
| 46 | + gpiochip_add(&ixp4xx_gpio_chip); |
| 47 | + |
| 48 | if (cpu_is_ixp46x()) { |
| 49 | int region; |
| 50 | |
| 51 | --- a/arch/arm/Kconfig |
| 52 | +++ b/arch/arm/Kconfig |
| 53 | @@ -418,6 +418,7 @@ config ARCH_IXP4XX |
| 54 | select GENERIC_GPIO |
| 55 | select GENERIC_TIME |
| 56 | select GENERIC_CLOCKEVENTS |
| 57 | + select ARCH_REQUIRE_GPIOLIB |
| 58 | help |
| 59 | Support for Intel's IXP4XX (XScale) family of processors. |
| 60 | |
| 61 | --- a/arch/arm/mach-ixp4xx/include/mach/gpio.h |
| 62 | +++ b/arch/arm/mach-ixp4xx/include/mach/gpio.h |
| 63 | @@ -27,47 +27,31 @@ |
| 64 | |
| 65 | #include <linux/kernel.h> |
| 66 | #include <mach/hardware.h> |
| 67 | +#include <asm-generic/gpio.h> /* cansleep wrappers */ |
| 68 | |
| 69 | -static inline int gpio_request(unsigned gpio, const char *label) |
| 70 | -{ |
| 71 | - return 0; |
| 72 | -} |
| 73 | - |
| 74 | -static inline void gpio_free(unsigned gpio) |
| 75 | -{ |
| 76 | - might_sleep(); |
| 77 | - |
| 78 | - return; |
| 79 | -} |
| 80 | - |
| 81 | -static inline int gpio_direction_input(unsigned gpio) |
| 82 | -{ |
| 83 | - gpio_line_config(gpio, IXP4XX_GPIO_IN); |
| 84 | - return 0; |
| 85 | -} |
| 86 | - |
| 87 | -static inline int gpio_direction_output(unsigned gpio, int level) |
| 88 | -{ |
| 89 | - gpio_line_set(gpio, level); |
| 90 | - gpio_line_config(gpio, IXP4XX_GPIO_OUT); |
| 91 | - return 0; |
| 92 | -} |
| 93 | +#define NR_BUILTIN_GPIO 16 |
| 94 | |
| 95 | static inline int gpio_get_value(unsigned gpio) |
| 96 | { |
| 97 | - int value; |
| 98 | - |
| 99 | - gpio_line_get(gpio, &value); |
| 100 | - |
| 101 | - return value; |
| 102 | + if (gpio < NR_BUILTIN_GPIO) |
| 103 | + { |
| 104 | + int value; |
| 105 | + gpio_line_get(gpio, &value); |
| 106 | + return value; |
| 107 | + } |
| 108 | + else |
| 109 | + return __gpio_get_value(gpio); |
| 110 | } |
| 111 | |
| 112 | static inline void gpio_set_value(unsigned gpio, int value) |
| 113 | { |
| 114 | - gpio_line_set(gpio, value); |
| 115 | + if (gpio < NR_BUILTIN_GPIO) |
| 116 | + gpio_line_set(gpio, value); |
| 117 | + else |
| 118 | + __gpio_set_value(gpio, value); |
| 119 | } |
| 120 | |
| 121 | -#include <asm-generic/gpio.h> /* cansleep wrappers */ |
| 122 | +#define gpio_cansleep __gpio_cansleep |
| 123 | |
| 124 | extern int gpio_to_irq(int gpio); |
| 125 | extern int irq_to_gpio(int gpio); |
| 126 | |
