arm: tegra: e1853: add WXGA touch panel support

Support WXGA display and touch input for e1853.

bug 1036173

Change-Id: Ia66119c1f05dd61a46346a1b7e5dc5bbbeb43495
Signed-off-by: Dongfang Shi <dshi@nvidia.com>
Reviewed-on: http://git-master/r/129521
(cherry picked from commit a766194a31b6fe7e9834959a19c88d375c15d6de)
Reviewed-on: http://git-master/r/143774
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>

3 files changed, 144 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-e1853-panel.c b/arch/arm/mach-tegra/board-e1853-panel.c
index f500b66638c2..400534e41035 100644
--- a/arch/arm/mach-tegra/board-e1853-panel.c
+++ b/arch/arm/mach-tegra/board-e1853-panel.c
@@ -168,6 +168,34 @@ static int e1853_lvds_disable(void)
 	return 0;
 }
 
+#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT
+
+static struct tegra_dc_mode e1853_panel_modes[] = {
+	{
+		/* 1366x768@60Hz */
+		.pclk = 74180000,
+		.h_ref_to_sync = 1,
+		.v_ref_to_sync = 1,
+		.h_sync_width = 30,
+		.v_sync_width = 5,
+		.h_back_porch = 52,
+		.v_back_porch = 20,
+		.h_active = 1366,
+		.v_active = 768,
+		.h_front_porch = 64,
+		.v_front_porch = 25,
+	},
+};
+
+static struct tegra_fb_data e1853_fb_data = {
+	.win        = 0,
+	.xres       = 1366,
+	.yres       = 768,
+	.bits_per_pixel = 32,
+};
+
+#else
+
 static struct tegra_dc_mode e1853_panel_modes[] = {
 	{
 		/* 800x480@60 */
@@ -192,6 +220,8 @@ static struct tegra_fb_data e1853_fb_data = {
 	.bits_per_pixel	= 32,
 };
 
+#endif
+
 static struct tegra_dc_out e1853_ser_out = {
 	.align		= TEGRA_DC_ALIGN_MSB,
 	.order		= TEGRA_DC_ORDER_RED_BLUE,
diff --git a/arch/arm/mach-tegra/board-e1853.c b/arch/arm/mach-tegra/board-e1853.c
index 9481aa2f3249..e58d106ca8b5 100644
--- a/arch/arm/mach-tegra/board-e1853.c
+++ b/arch/arm/mach-tegra/board-e1853.c
@@ -35,6 +35,9 @@
 #include <linux/platform_data/tegra_nor.h>
 #include <linux/spi/spi.h>
 #include <linux/mtd/partitions.h>
+#if defined(CONFIG_TOUCHSCREEN_ATMEL_MXT)
+#include <linux/i2c/atmel_mxt_ts.h>
+#endif
 #include <mach/clk.h>
 #include <mach/iomap.h>
 #include <mach/irqs.h>
@@ -354,6 +357,107 @@ static struct platform_device *e1853_devices[] __initdata = {
 	&tegra_wdt0_device
 };
 
+#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT
+
+#define MXT_CONFIG_CRC  0xD62DE8
+static const u8 config[] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xFF, 0xFF, 0x32, 0x0A, 0x00, 0x14, 0x14, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x8B, 0x00, 0x00,
+	0x1B, 0x2A, 0x00, 0x20, 0x3C, 0x04, 0x05, 0x00,
+	0x02, 0x01, 0x00, 0x0A, 0x0A, 0x0A, 0x0A, 0xFF,
+	0x02, 0x55, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x64, 0x02, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23,
+	0x00, 0x00, 0x00, 0x05, 0x0A, 0x15, 0x1E, 0x00,
+	0x00, 0x04, 0xFF, 0x03, 0x3F, 0x64, 0x64, 0x01,
+	0x0A, 0x14, 0x28, 0x4B, 0x00, 0x02, 0x00, 0x64,
+	0x00, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x08, 0x10, 0x3C, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+#define MXT_CONFIG_CRC_SKU2000  0xA24D9A
+static const u8 config_sku2000[] = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xFF, 0xFF, 0x32, 0x0A, 0x00, 0x14, 0x14, 0x19,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x8B, 0x00, 0x00,
+	0x1B, 0x2A, 0x00, 0x20, 0x3A, 0x04, 0x05, 0x00, /* 23=thr 2 di */
+	0x04, 0x04, 0x41, 0x0A, 0x0A, 0x0A, 0x0A, 0xFF,
+	0x02, 0x55, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x00, 0x00, /* 0A=limit */
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23,
+	0x00, 0x00, 0x00, 0x05, 0x0A, 0x15, 0x1E, 0x00,
+	0x00, 0x04, 0x00, 0x03, 0x3F, 0x64, 0x64, 0x01,
+	0x0A, 0x14, 0x28, 0x4B, 0x00, 0x02, 0x00, 0x64,
+	0x00, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x08, 0x10, 0x3C, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static struct mxt_platform_data atmel_mxt_info = {
+	.x_line         = 27,
+	.y_line         = 42,
+	.x_size         = 768,
+	.y_size         = 1366,
+	.blen           = 0x20,
+	.threshold      = 0x3C,
+	.voltage        = 3300000,              /* 3.3V */
+	.orient         = 5,
+	.config         = config,
+	.config_length  = 157,
+	.config_crc     = MXT_CONFIG_CRC,
+	.irqflags       = IRQF_TRIGGER_FALLING,
+	.read_chg       = NULL,
+};
+
+static struct i2c_board_info __initdata atmel_i2c_info[] = {
+	{
+		I2C_BOARD_INFO("atmel_mxt_ts", 0x5A),
+		.irq = TEGRA_GPIO_TO_IRQ(TOUCH_GPIO_IRQ_ATMEL_T9),
+		.platform_data = &atmel_mxt_info,
+	}
+};
+
+static __initdata struct tegra_clk_init_table spi_clk_init_table[] = {
+	/* name         parent          rate            enabled */
+	{ "sbc1",       "pll_p",        52000000,       true},
+	{ NULL,         NULL,           0,              0},
+};
+
+static int __init e1853_touch_init(void)
+{
+	gpio_request(TOUCH_GPIO_IRQ_ATMEL_T9, "atmel-irq");
+	gpio_direction_input(TOUCH_GPIO_IRQ_ATMEL_T9);
+
+	gpio_request(TOUCH_GPIO_RST_ATMEL_T9, "atmel-reset");
+	gpio_direction_output(TOUCH_GPIO_RST_ATMEL_T9, 0);
+	usleep_range(1000, 2000);
+	gpio_set_value(TOUCH_GPIO_RST_ATMEL_T9, 1);
+	msleep(100);
+
+	atmel_mxt_info.config = config_sku2000;
+	atmel_mxt_info.config_crc = MXT_CONFIG_CRC_SKU2000;
+
+	i2c_register_board_info(TOUCH_BUS_ATMEL_T9, atmel_i2c_info, 1);
+
+	return 0;
+}
+
+#endif /* CONFIG_TOUCHSCREEN_ATMEL_MXT */
+
 #if defined(CONFIG_USB_G_ANDROID)
 static struct tegra_usb_platform_data tegra_udc_pdata = {
 	.port_otg = false,
@@ -405,6 +509,7 @@ static struct tegra_usb_platform_data tegra_ehci1_utmi_pdata = {
 	},
 };
 #endif
+
 static struct tegra_usb_platform_data tegra_ehci2_utmi_pdata = {
 	.port_otg = false,
 	.has_hostpc = true,
@@ -519,6 +624,9 @@ static void __init tegra_e1853_init(void)
 	e1853_sdhci_init();
 	e1853_spi_init();
 	platform_add_devices(e1853_devices, ARRAY_SIZE(e1853_devices));
+#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT
+	e1853_touch_init();
+#endif
 	e1853_panel_init();
 	e1853_nor_init();
 	e1853_pcie_init();
diff --git a/arch/arm/mach-tegra/board-e1853.h b/arch/arm/mach-tegra/board-e1853.h
index 58b8ab8725af..beb636ce9b5b 100644
--- a/arch/arm/mach-tegra/board-e1853.h
+++ b/arch/arm/mach-tegra/board-e1853.h
@@ -25,4 +25,10 @@ int e1853_panel_init(void);
 int e1853_gpio_init(void);
 int e1853_pins_state_init(void);
 
+#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT
+#define TOUCH_GPIO_IRQ_ATMEL_T9 TEGRA_GPIO_PEE1
+#define TOUCH_GPIO_RST_ATMEL_T9 TEGRA_GPIO_PR2
+#define TOUCH_BUS_ATMEL_T9  0
+#endif
+
 #endif