1 files changed, 103 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-kai-kbc.c b/arch/arm/mach-tegra/board-kai-kbc.c
new file mode 100644
index 00000000000..5c528640279
--- /dev/null
+++ b/arch/arm/mach-tegra/board-kai-kbc.c
@@ -0,0 +1,103 @@
+/*
+ * arch/arm/mach-tegra/board-kai-kbc.c
+ * Keys configuration for Nvidia tegra3 kai platform.
+ *
+ * Copyright (C) 2012 NVIDIA, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
+#include <linux/mfd/max77663-core.h>
+#include <linux/gpio_scrollwheel.h>
+
+#include <mach/irqs.h>
+#include <mach/io.h>
+#include <mach/iomap.h>
+#include <mach/kbc.h>
+#include "board.h"
+#include "board-kai.h"
+
+#include "gpio-names.h"
+#include "devices.h"
+
+#define GPIO_KEY(_id, _gpio, _iswake)           \
+        {                                       \
+                .code = _id,                    \
+                .gpio = TEGRA_GPIO_##_gpio,     \
+                .active_low = 1,                \
+                .desc = #_id,                   \
+                .type = EV_KEY,                 \
+                .wakeup = _iswake,              \
+                .debounce_interval = 10,        \
+        }
+
+#define GPIO_IKEY(_id, _irq, _iswake, _deb)     \
+        {                                       \
+                .code = _id,                    \
+                .gpio = -1,                     \
+                .irq = _irq,                    \
+                .desc = #_id,                   \
+                .type = EV_KEY,                 \
+                .wakeup = _iswake,              \
+                .debounce_interval = _deb,      \
+        }
+
+static struct gpio_keys_button kai_keys[] = {
+        [0] = GPIO_KEY(KEY_MENU, PR2, 0),
+        [1] = GPIO_KEY(KEY_BACK, PQ1, 0),
+        [2] = GPIO_KEY(KEY_HOME, PQ0, 0),
+        [3] = GPIO_KEY(KEY_SEARCH, PQ3, 0),
+        [4] = GPIO_KEY(KEY_VOLUMEUP, PR1, 0),
+        [5] = GPIO_KEY(KEY_VOLUMEDOWN, PR0, 0),
+        [6] = GPIO_IKEY(KEY_POWER, MAX77663_IRQ_BASE + MAX77663_IRQ_ONOFF_EN0_FALLING, 1, 100),
+        [7] = GPIO_IKEY(KEY_POWER, MAX77663_IRQ_BASE + MAX77663_IRQ_ONOFF_EN0_1SEC, 1, 3000),
+};
+
+static struct gpio_keys_platform_data kai_keys_platform_data = {
+        .buttons        = kai_keys,
+        .nbuttons       = ARRAY_SIZE(kai_keys),
+};
+
+static struct platform_device kai_keys_device = {
+        .name   = "gpio-keys",
+        .id     = 0,
+        .dev    = {
+                .platform_data  = &kai_keys_platform_data,
+        },
+};
+
+int __init kai_keys_init(void)
+{
+        int i;
+
+        pr_info("Registering gpio keys\n");
+
+        /* Enable gpio mode for other pins */
+        for (i = 0; i < kai_keys_platform_data.nbuttons; i++) {
+                if (kai_keys_platform_data.buttons[i].gpio < 0)
+                        continue;
+                tegra_gpio_enable(kai_keys_platform_data.buttons[i].gpio);
+        }
+
+        platform_device_register(&kai_keys_device);
+
+        return 0;
+}