[ARM]:tegra:cardhu:Fixing misc kernel crash on FPGA

Fixing kernel crashes which occurs during boot of cardhu
on FPGA with NO_ROOT_DEVICE option.

Original-Change-Id: I0bb935c4654058de759627e54684ceab549195ec
Reviewed-on: http://git-master/r/16053
Reviewed-by: Alok Chauhan <alokc@nvidia.com>
Tested-by: Alok Chauhan <alokc@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Kirubakaran Sampath <ksampath@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Original-Change-Id: I1d0b68b604fe07dc33255b6b949187b74dff885f

Rebase-Id: R3ceb29e0cd0ffdf99981609afb58941b142ab516

1 files changed, 105 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-cardhu-kbc.c b/arch/arm/mach-tegra/board-cardhu-kbc.c
new file mode 100644
index 000000000000..cb798e951c17
--- /dev/null
+++ b/arch/arm/mach-tegra/board-cardhu-kbc.c
@@ -0,0 +1,105 @@
+/*
+ * arch/arm/mach-tegra/board-cardhu-kbc.c
+ * KBC configuration for Nvidia tegra3 cardhu platform.
+ *
+ * Copyright (C) 2011 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 <mach/irqs.h>
+#include <mach/io.h>
+#include <mach/iomap.h>
+#include <mach/kbc.h>
+
+#define CARDHU_ROW_COUNT	2
+#define CARDHU_COL_COUNT	4
+
+static int plain_kbd_keycode[] = {
+	KEY_WAKEUP, KEY_RESERVED, KEY_VOLUMEDOWN, KEY_VOLUMEUP,
+	KEY_HOME,   KEY_MENU,     KEY_BACK,       KEY_SEARCH};
+
+static struct tegra_kbc_wake_key cardhu_wake_cfg[] = {
+	[0] = {
+		.row = 0,
+		.col = 0,
+	},
+};
+
+static struct tegra_kbc_platform_data cardhu_kbc_platform_data = {
+	.debounce_cnt = 20,
+	.repeat_cnt = 50 * 32,
+	.scan_timeout_cnt = 3000 * 32,
+	.plain_keycode = plain_kbd_keycode,
+	.fn_keycode = NULL,
+	.is_filter_keys = false,
+	.is_wake_on_any_key = false,
+	.wake_key_cnt = 1,
+	.wake_cfg = &cardhu_wake_cfg[0],
+};
+
+static struct resource cardhu_kbc_resources[] = {
+	[0] = {
+		.start = TEGRA_KBC_BASE,
+		.end   = TEGRA_KBC_BASE + TEGRA_KBC_SIZE - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = INT_KBC,
+		.end   = INT_KBC,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+
+struct platform_device cardhu_kbc_device = {
+	.name = "tegra-kbc",
+	.id = -1,
+	.dev = {
+		.platform_data = &cardhu_kbc_platform_data,
+	},
+	.resource = cardhu_kbc_resources,
+	.num_resources = ARRAY_SIZE(cardhu_kbc_resources),
+};
+
+int __init cardhu_kbc_init(void)
+{
+	struct tegra_kbc_platform_data *data = &cardhu_kbc_platform_data;
+	int i;
+
+	pr_info("KBC: cardhu_kbc_init\n");
+
+	 /* Setup the pin configuration information. */
+	for (i = 0; i < KBC_MAX_GPIO; i++) {
+		data->pin_cfg[i].num = 0;
+		data->pin_cfg[i].pin_type = kbc_pin_unused;
+	}
+	for (i = 0; i < CARDHU_ROW_COUNT; i++) {
+		data->pin_cfg[i].num = i;
+		data->pin_cfg[i].pin_type = kbc_pin_row;
+	}
+
+	for (i = 0; i < CARDHU_COL_COUNT; i++) {
+		data->pin_cfg[i + CARDHU_ROW_COUNT].num = i;
+		data->pin_cfg[i + CARDHU_ROW_COUNT].pin_type = kbc_pin_col;
+	}
+	platform_device_register(&cardhu_kbc_device);
+	return 0;
+}