ARM: mach-shmobile: ap4evb: Add TouchScreen support

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

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index 1c2ec96ce261..b10431451f39 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -26,6 +26,8 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
+#include <linux/i2c.h>
+#include <linux/i2c/tsc2007.h>
 #include <linux/io.h>
 #include <linux/smsc911x.h>
 #include <linux/gpio.h>
@@ -234,6 +236,23 @@ static struct platform_device *ap4evb_devices[] __initdata = {
         &sdhi0_device,
 };
 
+/* TouchScreen */
+#define IRQ28   396
+struct tsc2007_platform_data tsc2007_info = {
+        .model                  = 2007,
+        .x_plate_ohms           = 180,
+};
+
+/* I2C */
+static struct i2c_board_info i2c1_devices[] = {
+        {
+                I2C_BOARD_INFO("tsc2007", 0x48),
+                .type           = "tsc2007",
+                .platform_data  = &tsc2007_info,
+                .irq            = IRQ28,
+        },
+};
+
 static struct map_desc ap4evb_io_desc[] __initdata = {
         /* create a 1:1 entity map for 0xe6xxxxxx
          * used by CPGA, INTC and PFC.
@@ -318,6 +337,13 @@ static void __init ap4evb_init(void)
         gpio_request(GPIO_FN_SDHID0_1, NULL);
         gpio_request(GPIO_FN_SDHID0_0, NULL);
 
+        /* enable TouchScreen */
+        gpio_request(GPIO_FN_IRQ28_123, NULL);
+        set_irq_type(IRQ28, IRQ_TYPE_LEVEL_LOW);
+
+        i2c_register_board_info(1, i2c1_devices,
+                                ARRAY_SIZE(i2c1_devices));
+
         sh7372_add_standard_devices();
 
         platform_add_devices(ap4evb_devices, ARRAY_SIZE(ap4evb_devices));