CHROMIUM: arm: tegra: Add platfrom devices for Cypress trackpad

arch/arm/mach-tegra/board-seaboard.c

Index: arch/arm/mach-tegra/board-seaboard.c
diff --git a/arch/arm/mach-tegra/board-seaboard.c b/arch/arm/mach-tegra/board-seaboard.c
index 75fbab68ef61c0c117bb8dafa2aaca90947a860b..de272cc73794c6600994af3c0e834dd884f6b56b 100644
--- a/arch/arm/mach-tegra/board-seaboard.c
+++ b/arch/arm/mach-tegra/board-seaboard.c
@@ -303,6 +303,36 @@ static struct tegra_i2c_platform_data seaboard_dvc_platform_data = {
 	.is_dvc		= true,
 };
 
+/* for Cypress Trackpad. */
+#include <linux/cyapa.h>
+
+static int cyapa_i2c_platform_init(void)
+{
+	return 0;
+}
+
+static int cyapa_i2c_platform_wakeup(void)
+{
+	return 0;
+}
+
+static struct cyapa_platform_data cyapa_i2c_platform_data = {
+	.flag = 0,
+	.gen = CYAPA_GEN2,
+	.power_state = CYAPA_PWR_ACTIVE,
+	.use_absolute_mode = false,
+	.use_polling_mode = false,
+	.polling_interval_time_active = CYAPA_ACTIVE_POLLING_INTVAL_TIME,
+	.polling_interval_time_lowpower = CYAPA_LOWPOWER_POLLING_INTVAL_TIME,
+	.active_touch_timeout = CYAPA_ACTIVE_TOUCH_TIMEOUT,
+	.name = CYAPA_I2C_NAME,
+	.irq_gpio = TEGRA_GPIO_CYTP_INT,
+	.report_rate = CYAPA_REPORT_RATE,
+
+	.wakeup = cyapa_i2c_platform_wakeup,
+	.init = cyapa_i2c_platform_init,
+};
+
 static struct i2c_board_info __initdata seaboard_i2c0_devices[] = {
 	{
 		I2C_BOARD_INFO("wm8903", 0x1a),
@@ -311,6 +341,11 @@ static struct i2c_board_info __initdata seaboard_i2c0_devices[] = {
 		I2C_BOARD_INFO("isl29018", 0x44),
 		.irq = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_ISL29018_IRQ),
 	},
+	{
+		I2C_BOARD_INFO(CYAPA_I2C_NAME, 0x67),
+		.irq = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_CYTP_INT),
+		.platform_data = &cyapa_i2c_platform_data,
+	},
 };
 
 static struct i2c_board_info __initdata seaboard_i2c4_devices[] = {
@@ -549,6 +584,11 @@ static void __init tegra_seaboard_init(void)
 
 	tegra_gpio_enable(TEGRA_GPIO_LIDSWITCH);
 	tegra_gpio_enable(TEGRA_GPIO_POWERKEY);
+
+	/* for Cypress trackpad. */
+	tegra_gpio_enable(TEGRA_GPIO_CYTP_INT);
+	gpio_request(TEGRA_GPIO_CYTP_INT, "gpio_cytp_int");
+	gpio_direction_input(TEGRA_GPIO_CYTP_INT);
 }
 
 MACHINE_START(SEABOARD, "seaboard")