Added code to use tegra kbc driver on Ventana board.

This code is off by default.

By default Ventana's buttons are GPIO pins.
But it is possible to connect it to kbc controller
(simple hardware rework needed).
This code might be used as a reference code for using kbc driver.

Original-Change-Id: Iaad4b8ca4b1bf6da1674e282f3bfb86349927fbd
Reviewed-on: http://git-master/r/9801
Tested-by: Victor Ryabukhin <vryabukhin@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

Rebase-Id: Rec5eaab861c97d7b363b796db96b8eb181d38782

1 files changed, 188 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-ventana-kbc.c b/arch/arm/mach-tegra/board-ventana-kbc.c
new file mode 100644
index 000000000000..869af114fa90
--- /dev/null
+++ b/arch/arm/mach-tegra/board-ventana-kbc.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2010 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
+ */
+
+/*
+* Warning: Ventana might need some hardware rework to be able to work with
+* kbc-driver. Default Ventana h/w configuration should use GPIO keyboard
+* driver instead
+*/
+
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/device.h>
+
+#include <mach/clk.h>
+#include <mach/iomap.h>
+#include <mach/irqs.h>
+#include <mach/pinmux.h>
+#include <mach/iomap.h>
+#include <mach/io.h>
+#include <mach/kbc.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+
+static int plain_kbd_keycode[] = {
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_HOME, KEY_BACK, KEY_MENU,
+		KEY_VOLUMEDOWN, KEY_VOLUMEUP, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED
+};
+
+static int fn_kbd_keycode[] = {
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_HOME, KEY_BACK, KEY_MENU,
+		KEY_VOLUMEDOWN, KEY_VOLUMEUP, KEY_RESERVED, KEY_RESERVED,
+	KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+		KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED
+};
+
+
+
+
+static struct tegra_kbc_wake_key ventana_wake_cfg[] = {
+	[0] = {
+		.row = 14,
+		.col = 1,
+	},
+};
+
+
+static struct tegra_kbc_platform_data ventana_kbc_platform_data = {
+	.debounce_cnt = 20,
+	.repeat_cnt = 50 * 32,
+	.wake_cnt = 1,
+	.wake_cfg = &ventana_wake_cfg[0],
+	.filter_keys  = true,
+};
+
+
+static struct resource ventana_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 ventana_kbc_device = {
+	.name = "tegra-kbc",
+	.id = -1,
+	.dev = {
+		.platform_data = &ventana_kbc_platform_data,
+	},
+	.resource = ventana_kbc_resources,
+	.num_resources = ARRAY_SIZE(ventana_kbc_resources),
+};
+
+int __init ventana_kbc_init(void)
+{
+	struct tegra_kbc_platform_data *data = &ventana_kbc_platform_data;
+	int i, j;
+
+	pr_info("KBC: ventana_kbc_init\n");
+
+	/*
+	 * Setup the pin configuration information.
+	 */
+	for (i = 0; i < KBC_MAX_ROW; i++) {
+		data->pin_cfg[i].num = i;
+		data->pin_cfg[i].is_row = true;
+		data->pin_cfg[i].is_col = false;
+	}
+
+	for (j = 0; j < 7/*KBC_MAX_COL*/; j++) {
+		data->pin_cfg[i + j].num = j;
+		data->pin_cfg[i + j].is_row = false;
+		data->pin_cfg[i + j].is_col = true;
+	}
+
+	/* tegra-kbc will use default keycodes. */
+	data->plain_keycode = plain_kbd_keycode;
+	data->fn_keycode = fn_kbd_keycode;
+	data->filter_keys = true;
+	platform_device_register(&ventana_kbc_device);
+	return 0;
+}
+
+
+