ARM: EXYNOS4: Add Atmel mXT touchscreen device to the NURI board

This patch is to support Atmel mXT touchscreen device to the NURI board.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

2 files changed, 91 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index e849f67be47d..11b57a4d53fa 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -169,8 +169,10 @@ config MACH_NURI
         select S3C_DEV_HSMMC2
         select S3C_DEV_HSMMC3
         select S3C_DEV_I2C1
+        select S3C_DEV_I2C3
         select S3C_DEV_I2C5
         select EXYNOS4_SETUP_I2C1
+        select EXYNOS4_SETUP_I2C3
         select EXYNOS4_SETUP_I2C5
         select EXYNOS4_SETUP_SDHCI
         select SAMSUNG_DEV_PWM
diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-nuri.c
index b79ad010d194..d13c5e81c6a4 100644
--- a/arch/arm/mach-exynos4/mach-nuri.c
+++ b/arch/arm/mach-exynos4/mach-nuri.c
@@ -12,6 +12,7 @@
 #include <linux/serial_core.h>
 #include <linux/input.h>
 #include <linux/i2c.h>
+#include <linux/i2c/atmel_mxt_ts.h>
 #include <linux/gpio_keys.h>
 #include <linux/gpio.h>
 #include <linux/regulator/machine.h>
@@ -30,6 +31,8 @@
 #include <plat/cpu.h>
 #include <plat/devs.h>
 #include <plat/sdhci.h>
+#include <plat/gpio-cfg.h>
+#include <plat/iic.h>
 
 #include <mach/map.h>
 
@@ -257,6 +260,88 @@ static struct i2c_board_info i2c1_devs[] __initdata = {
         /* Gyro, To be updated */
 };
 
+/* TSP */
+static u8 mxt_init_vals[] = {
+        /* MXT_GEN_COMMAND(6) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        /* MXT_GEN_POWER(7) */
+        0x20, 0xff, 0x32,
+        /* MXT_GEN_ACQUIRE(8) */
+        0x0a, 0x00, 0x05, 0x00, 0x00, 0x00, 0x09, 0x23,
+        /* MXT_TOUCH_MULTI(9) */
+        0x00, 0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x00, 0x02, 0x00,
+        0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00,
+        /* MXT_TOUCH_KEYARRAY(15) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
+        0x00,
+        /* MXT_SPT_GPIOPWM(19) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        /* MXT_PROCI_GRIPFACE(20) */
+        0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x28, 0x04,
+        0x0f, 0x0a,
+        /* MXT_PROCG_NOISE(22) */
+        0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x23, 0x00,
+        0x00, 0x05, 0x0f, 0x19, 0x23, 0x2d, 0x03,
+        /* MXT_TOUCH_PROXIMITY(23) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00,
+        /* MXT_PROCI_ONETOUCH(24) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        /* MXT_SPT_SELFTEST(25) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00,
+        /* MXT_PROCI_TWOTOUCH(27) */
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        /* MXT_SPT_CTECONFIG(28) */
+        0x00, 0x00, 0x02, 0x08, 0x10, 0x00,
+};
+
+static struct mxt_platform_data mxt_platform_data = {
+        .config                 = mxt_init_vals,
+        .config_length          = ARRAY_SIZE(mxt_init_vals),
+
+        .x_line                 = 18,
+        .y_line                 = 11,
+        .x_size                 = 1024,
+        .y_size                 = 600,
+        .blen                   = 0x1,
+        .threshold              = 0x28,
+        .voltage                = 2800000,              /* 2.8V */
+        .orient                 = MXT_DIAGONAL_COUNTER,
+        .irqflags               = IRQF_TRIGGER_FALLING,
+};
+
+static struct s3c2410_platform_i2c i2c3_data __initdata = {
+        .flags          = 0,
+        .bus_num        = 3,
+        .slave_addr     = 0x10,
+        .frequency      = 400 * 1000,
+        .sda_delay      = 100,
+};
+
+static struct i2c_board_info i2c3_devs[] __initdata = {
+        {
+                I2C_BOARD_INFO("atmel_mxt_ts", 0x4a),
+                .platform_data  = &mxt_platform_data,
+                .irq            = IRQ_EINT(4),
+        },
+};
+
+static void __init nuri_tsp_init(void)
+{
+        int gpio;
+
+        /* TOUCH_INT: XEINT_4 */
+        gpio = EXYNOS4_GPX0(4);
+        gpio_request(gpio, "TOUCH_INT");
+        s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(0xf));
+        s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
+}
+
 /* GPIO I2C 5 (PMIC) */
 static struct i2c_board_info i2c5_devs[] __initdata = {
         /* max8997, To be updated */
@@ -270,6 +355,7 @@ static struct platform_device *nuri_devices[] __initdata = {
         &s3c_device_hsmmc3,
         &s3c_device_wdt,
         &s3c_device_timer[0],
+        &s3c_device_i2c3,
 
         /* NURI Devices */
         &nuri_gpio_keys,
@@ -287,8 +373,11 @@ static void __init nuri_map_io(void)
 static void __init nuri_machine_init(void)
 {
         nuri_sdhci_init();
+        nuri_tsp_init();
 
         i2c_register_board_info(1, i2c1_devs, ARRAY_SIZE(i2c1_devs));
+        s3c_i2c3_set_platdata(&i2c3_data);
+        i2c_register_board_info(3, i2c3_devs, ARRAY_SIZE(i2c3_devs));
         i2c_register_board_info(5, i2c5_devs, ARRAY_SIZE(i2c5_devs));
 
         /* Last */