gpiokeys: add gpio keyboard platform device

Signed-off-by: NSteven Miao <realmz6@gmail.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>

arch/blackfin/mach-bf609/boards/ezkit.c

@@ -1098,6 +1098,28 @@ static const struct ad7877_platform_data bfin_ad7877_ts_info = {
 };
 #endif
 
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+
+static struct gpio_keys_button bfin_gpio_keys_table[] = {
+	{BTN_0, GPIO_PB10, 1, "gpio-keys: BTN0"},
+	{BTN_1, GPIO_PE1, 1, "gpio-keys: BTN1"},
+};
+
+static struct gpio_keys_platform_data bfin_gpio_keys_data = {
+	.buttons        = bfin_gpio_keys_table,
+	.nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
+};
+
+static struct platform_device bfin_device_gpiokeys = {
+	.name      = "gpio-keys",
+	.dev = {
+		.platform_data = &bfin_gpio_keys_data,
+	},
+};
+#endif
+
 static struct spi_board_info bfin_spi_board_info[] __initdata = {
 #if defined(CONFIG_MTD_M25P80) \
 	|| defined(CONFIG_MTD_M25P80_MODULE)