sh: mach-x3proto: gpio-keys support.

This adds gpio-keys mappings for the button matrix on the baseboard,
now that we have support for the pin controller.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 105 insertions, 2 deletions

diff --git a/arch/sh/boards/mach-x3proto/setup.c b/arch/sh/boards/mach-x3proto/setup.c
index 8fd75109bdc6..d682e2b6a856 100644
--- a/arch/sh/boards/mach-x3proto/setup.c
+++ b/arch/sh/boards/mach-x3proto/setup.c
@@ -1,9 +1,9 @@
 /*
- * arch/sh/boards/renesas/x3proto/setup.c
+ * arch/sh/boards/mach-x3proto/setup.c
  *
  * Renesas SH-X3 Prototype Board Support.
  *
- * Copyright (C) 2007 - 2008 Paul Mundt
+ * Copyright (C) 2007 - 2010  Paul Mundt
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -16,9 +16,13 @@
 #include <linux/smc91x.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
+#include <linux/input.h>
 #include <linux/usb/r8a66597.h>
 #include <linux/usb/m66592.h>
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
 #include <mach/ilsel.h>
+#include <mach/hardware.h>
 #include <asm/smp-ops.h>
 
 static struct resource heartbeat_resources[] = {
@@ -122,11 +126,95 @@ static struct platform_device m66592_usb_peripheral_device = {
         .resource       = m66592_usb_peripheral_resources,
 };
 
+static struct gpio_keys_button baseboard_buttons[NR_BASEBOARD_GPIOS] = {
+        {
+                .desc           = "key44",
+                .code           = KEY_POWER,
+                .active_low     = 1,
+                .wakeup         = 1,
+        }, {
+                .desc           = "key43",
+                .code           = KEY_SUSPEND,
+                .active_low     = 1,
+                .wakeup         = 1,
+        }, {
+                .desc           = "key42",
+                .code           = KEY_KATAKANAHIRAGANA,
+                .active_low     = 1,
+        }, {
+                .desc           = "key41",
+                .code           = KEY_SWITCHVIDEOMODE,
+                .active_low     = 1,
+        }, {
+                .desc           = "key34",
+                .code           = KEY_F12,
+                .active_low     = 1,
+        }, {
+                .desc           = "key33",
+                .code           = KEY_F11,
+                .active_low     = 1,
+        }, {
+                .desc           = "key32",
+                .code           = KEY_F10,
+                .active_low     = 1,
+        }, {
+                .desc           = "key31",
+                .code           = KEY_F9,
+                .active_low     = 1,
+        }, {
+                .desc           = "key24",
+                .code           = KEY_F8,
+                .active_low     = 1,
+        }, {
+                .desc           = "key23",
+                .code           = KEY_F7,
+                .active_low     = 1,
+        }, {
+                .desc           = "key22",
+                .code           = KEY_F6,
+                .active_low     = 1,
+        }, {
+                .desc           = "key21",
+                .code           = KEY_F5,
+                .active_low     = 1,
+        }, {
+                .desc           = "key14",
+                .code           = KEY_F4,
+                .active_low     = 1,
+        }, {
+                .desc           = "key13",
+                .code           = KEY_F3,
+                .active_low     = 1,
+        }, {
+                .desc           = "key12",
+                .code           = KEY_F2,
+                .active_low     = 1,
+        }, {
+                .desc           = "key11",
+                .code           = KEY_F1,
+                .active_low     = 1,
+        },
+};
+
+static struct gpio_keys_platform_data baseboard_buttons_data = {
+        .buttons        = baseboard_buttons,
+        .nbuttons       = ARRAY_SIZE(baseboard_buttons),
+};
+
+static struct platform_device baseboard_buttons_device = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &baseboard_buttons_data,
+        },
+};
+
 static struct platform_device *x3proto_devices[] __initdata = {
         &heartbeat_device,
         &smc91x_device,
         &r8a66597_usb_host_device,
         &m66592_usb_peripheral_device,
+        &baseboard_buttons_device,
 };
 
 static void __init x3proto_init_irq(void)
@@ -139,12 +227,27 @@ static void __init x3proto_init_irq(void)
 
 static int __init x3proto_devices_setup(void)
 {
+        int ret, i;
+
         /*
          * IRLs are only needed for ILSEL mappings, so flip over the INTC
          * pins at a later point to enable the GPIOs to settle.
          */
         x3proto_init_irq();
 
+        /*
+         * Now that ILSELs are available, set up the baseboard GPIOs.
+         */
+        ret = x3proto_gpio_setup();
+        if (unlikely(ret))
+                return ret;
+
+        /*
+         * Propagate dynamic GPIOs for the baseboard button device.
+         */
+        for (i = 0; i < ARRAY_SIZE(baseboard_buttons); i++)
+                baseboard_buttons[i].gpio = x3proto_gpio_chip.base + i;
+
         r8a66597_usb_host_resources[1].start =
                 r8a66597_usb_host_resources[1].end = ilsel_enable(ILSEL_USBH_I);