1 files changed, 95 insertions, 0 deletions
diff --git a/arch/mips/bcm47xx/buttons.c b/arch/mips/bcm47xx/buttons.c
new file mode 100644
index 000000000000..d93711bf41b0
--- /dev/null
+++ b/arch/mips/bcm47xx/buttons.c
@@ -0,0 +1,95 @@
+#include "bcm47xx_private.h"
+
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+#include <linux/interrupt.h>
+#include <linux/ssb/ssb_embedded.h>
+#include <bcm47xx_board.h>
+#include <bcm47xx.h>
+
+/**************************************************
+ * Database
+ **************************************************/
+
+static const struct gpio_keys_button
+bcm47xx_buttons_netgear_wndr4500_v1[] __initconst = {
+	{
+		.code		= KEY_WPS_BUTTON,
+		.gpio		= 4,
+		.active_low	= 1,
+	},
+	{
+		.code		= KEY_RFKILL,
+		.gpio		= 5,
+		.active_low	= 1,
+	},
+	{
+		.code		= KEY_RESTART,
+		.gpio		= 6,
+		.active_low	= 1,
+	},
+};
+
+/**************************************************
+ * Init
+ **************************************************/
+
+static struct gpio_keys_platform_data bcm47xx_button_pdata;
+
+static struct platform_device bcm47xx_buttons_gpio_keys = {
+	.name = "gpio-keys",
+	.dev = {
+		.platform_data = &bcm47xx_button_pdata,
+	}
+};
+
+/* Copy data from __initconst */
+static int __init bcm47xx_buttons_copy(const struct gpio_keys_button *buttons,
+				       size_t nbuttons)
+{
+	size_t size = nbuttons * sizeof(*buttons);
+
+	bcm47xx_button_pdata.buttons = kmalloc(size, GFP_KERNEL);
+	if (!bcm47xx_button_pdata.buttons)
+		return -ENOMEM;
+	memcpy(bcm47xx_button_pdata.buttons, buttons, size);
+	bcm47xx_button_pdata.nbuttons = nbuttons;
+
+	return 0;
+}
+
+#define bcm47xx_copy_bdata(dev_buttons)					\
+	bcm47xx_buttons_copy(dev_buttons, ARRAY_SIZE(dev_buttons));
+
+int __init bcm47xx_buttons_register(void)
+{
+	enum bcm47xx_board board = bcm47xx_board_get();
+	int err;
+
+#ifdef CONFIG_BCM47XX_SSB
+	if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_SSB) {
+		pr_debug("Buttons on SSB are not supported yet.\n");
+		return -ENOTSUPP;
+	}
+#endif
+
+	switch (board) {
+	case BCM47XX_BOARD_NETGEAR_WNDR4500V1:
+		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr4500_v1);
+		break;
+	default:
+		pr_debug("No buttons configuration found for this device\n");
+		return -ENOTSUPP;
+	}
+
+	if (err)
+		return -ENOMEM;
+
+	err = platform_device_register(&bcm47xx_buttons_gpio_keys);
+	if (err) {
+		pr_err("Failed to register platform device: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}