1 files changed, 85 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
new file mode 100644
index 000000000000..fad41ec62300
--- /dev/null
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -0,0 +1,85 @@
+/*
+ * common-board-devices.c
+ *
+ * Copyright (C) 2011 CompuLab, Ltd.
+ * Author: Mike Rapoport <mike@compulab.co.il>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/ads7846.h>
+
+#include <plat/mcspi.h>
+
+#include "common-board-devices.h"
+
+static struct omap2_mcspi_device_config ads7846_mcspi_config = {
+        .turbo_mode     = 0,
+        .single_channel = 1,    /* 0: slave, 1: master */
+};
+
+static struct ads7846_platform_data ads7846_config = {
+        .x_max                  = 0x0fff,
+        .y_max                  = 0x0fff,
+        .x_plate_ohms           = 180,
+        .pressure_max           = 255,
+        .debounce_max           = 10,
+        .debounce_tol           = 3,
+        .debounce_rep           = 1,
+        .gpio_pendown           = -EINVAL,
+        .keep_vref_on           = 1,
+};
+
+static struct spi_board_info ads7846_spi_board_info __initdata = {
+        .modalias               = "ads7846",
+        .bus_num                = -EINVAL,
+        .chip_select            = 0,
+        .max_speed_hz           = 1500000,
+        .controller_data        = &ads7846_mcspi_config,
+        .irq                    = -EINVAL,
+        .platform_data          = &ads7846_config,
+};
+
+void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
+                              struct ads7846_platform_data *board_pdata)
+{
+        struct spi_board_info *spi_bi = &ads7846_spi_board_info;
+        int err;
+
+        err = gpio_request(gpio_pendown, "TS PenDown");
+        if (err) {
+                pr_err("Could not obtain gpio for TS PenDown: %d\n", err);
+                return;
+        }
+
+        gpio_direction_input(gpio_pendown);
+        gpio_export(gpio_pendown, 0);
+
+        if (gpio_debounce)
+                gpio_set_debounce(gpio_pendown, gpio_debounce);
+
+        ads7846_config.gpio_pendown = gpio_pendown;
+
+        spi_bi->bus_num = bus_num;
+        spi_bi->irq     = OMAP_GPIO_IRQ(gpio_pendown);
+
+        if (board_pdata)
+                spi_bi->platform_data = board_pdata;
+
+        spi_register_board_info(&ads7846_spi_board_info, 1);
+}