sh: mach-ecovec24: Add TouchScreen support

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index 5f9881e16e2f..52912a6149c7 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -18,6 +18,7 @@
 #include <linux/delay.h>
 #include <linux/usb/r8a66597.h>
 #include <linux/i2c.h>
+#include <linux/i2c/tsc2007.h>
 #include <linux/input.h>
 #include <video/sh_mobile_lcdc.h>
 #include <media/sh_mobile_ceu.h>
@@ -376,6 +377,43 @@ static struct platform_device keysc_device = {
         },
 };
 
+/* TouchScreen */
+#define IRQ0 32
+static int ts_get_pendown_state(void)
+{
+        int val = 0;
+        gpio_free(GPIO_FN_INTC_IRQ0);
+        gpio_request(GPIO_PTZ0, NULL);
+        gpio_direction_input(GPIO_PTZ0);
+
+        val = gpio_get_value(GPIO_PTZ0);
+
+        gpio_free(GPIO_PTZ0);
+        gpio_request(GPIO_FN_INTC_IRQ0, NULL);
+
+        return val ? 0 : 1;
+}
+
+static int ts_init(void)
+{
+        gpio_request(GPIO_FN_INTC_IRQ0, NULL);
+        return 0;
+}
+
+struct tsc2007_platform_data tsc2007_info = {
+        .model                  = 2007,
+        .x_plate_ohms           = 180,
+        .get_pendown_state      = ts_get_pendown_state,
+        .init_platform_hw       = ts_init,
+};
+
+static struct i2c_board_info ts_i2c_clients = {
+        I2C_BOARD_INFO("tsc2007", 0x48),
+        .type           = "tsc2007",
+        .platform_data  = &tsc2007_info,
+        .irq            = IRQ0,
+};
+
 static struct platform_device *ecovec_devices[] __initdata = {
         &heartbeat_device,
         &nor_flash_device,
@@ -590,6 +628,10 @@ static int __init arch_setup(void)
                  */
                 gpio_request(GPIO_PTF4, NULL);
                 gpio_direction_output(GPIO_PTF4, 1);
+
+                /* enable TouchScreen */
+                i2c_register_board_info(0, &ts_i2c_clients, 1);
+                set_irq_type(IRQ0, IRQ_TYPE_LEVEL_LOW);
         }
 
         /* enable CEU0 */