From fa1d43818de208bdc2fd789777c538ab4aa7956a Mon Sep 17 00:00:00 2001
From: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Date: Fri, 12 Mar 2010 16:54:34 +0000
Subject: [PATCH 8/10] omap: rx-51: enable tsc2005

Patch-mainline: 2.6.35
Discussions: http://www.mail-archive.com/linux-omap@vger.kernel.org/msg26749.html

Enable TSC2005 touchscreen driver on the RX-51 board.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
---
 arch/arm/configs/rx51_defconfig              |    1 
 arch/arm/mach-omap2/board-rx51-peripherals.c |   46 +++++++++++++++++++++++++--
 2 files changed, 45 insertions(+), 2 deletions(-)

Index: linux-2.6.33-master/arch/arm/configs/rx51_defconfig
===================================================================
--- linux-2.6.33-master.orig/arch/arm/configs/rx51_defconfig	2010-04-19 17:28:20.000000000 +0300
+++ linux-2.6.33-master/arch/arm/configs/rx51_defconfig	2010-04-19 17:28:28.000000000 +0300
@@ -801,6 +801,7 @@
 # CONFIG_TOUCHSCREEN_TOUCHWIN is not set
 # CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
 # CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
+CONFIG_TOUCHSCREEN_TSC2005=m
 # CONFIG_TOUCHSCREEN_TSC2007 is not set
 CONFIG_INPUT_MISC=y
 # CONFIG_INPUT_ATI_REMOTE is not set
Index: linux-2.6.33-master/arch/arm/mach-omap2/board-rx51-peripherals.c
===================================================================
--- linux-2.6.33-master.orig/arch/arm/mach-omap2/board-rx51-peripherals.c	2010-04-19 17:28:20.000000000 +0300
+++ linux-2.6.33-master/arch/arm/mach-omap2/board-rx51-peripherals.c	2010-04-19 17:28:28.000000000 +0300
@@ -14,6 +14,7 @@
 #include <linux/input.h>
 #include <linux/input/matrix_keypad.h>
 #include <linux/spi/spi.h>
+#include <linux/spi/tsc2005.h>
 #include <linux/spi/wl12xx.h>
 #include <linux/i2c.h>
 #include <linux/i2c/twl.h>
@@ -42,6 +43,9 @@
 #define RX51_WL1251_POWER_GPIO		87
 #define RX51_WL1251_IRQ_GPIO		42
 
+#define RX51_TSC2005_RESET_GPIO		104
+#define RX51_TSC2005_IRQ_GPIO		100
+
 /* list all spi devices here */
 enum {
 	RX51_SPI_WL1251,
@@ -50,6 +54,7 @@
 };
 
 static struct wl12xx_platform_data wl1251_pdata;
+static struct tsc2005_platform_data tsc2005_pdata;
 
 static struct omap2_mcspi_device_config wl1251_mcspi_config = {
 	.turbo_mode	= 0,
@@ -87,10 +92,10 @@
 		.modalias		= "tsc2005",
 		.bus_num		= 1,
 		.chip_select		= 0,
-		/* .irq = OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO),*/
+		.irq			= OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO),
 		.max_speed_hz		= 6000000,
 		.controller_data	= &tsc2005_mcspi_config,
-		/* .platform_data = &tsc2005_config,*/
+		.platform_data		= &tsc2005_pdata,
 	},
 };
 
@@ -708,6 +713,42 @@
 
 #endif
 
+static struct tsc2005_platform_data tsc2005_pdata = {
+	.ts_pressure_max   = 2048,
+	.ts_pressure_fudge = 2,
+	.ts_x_max	   = 4096,
+	.ts_x_fudge	   = 4,
+	.ts_y_max	   = 4096,
+	.ts_y_fudge	   = 7,
+	.ts_x_plate_ohm	   = 280,
+	.esd_timeout_ms	   = 8000,
+};
+
+static void rx51_tsc2005_set_reset(bool enable)
+{
+	gpio_set_value(RX51_TSC2005_RESET_GPIO, enable);
+}
+
+static void __init rx51_init_tsc2005(void)
+{
+	int r;
+
+	r = gpio_request(RX51_TSC2005_IRQ_GPIO, "tsc2005 IRQ");
+	if (r >= 0)
+		gpio_direction_input(RX51_TSC2005_IRQ_GPIO);
+	else
+		printk(KERN_ERR "unable to get %s GPIO\n", "tsc2005 IRQ");
+
+	r = gpio_request(RX51_TSC2005_RESET_GPIO, "tsc2005 reset");
+	if (r >= 0) {
+		gpio_direction_output(RX51_TSC2005_RESET_GPIO, 1);
+		tsc2005_pdata.set_reset = rx51_tsc2005_set_reset;
+	} else {
+		printk(KERN_ERR "unable to get %s GPIO\n", "tsc2005 reset");
+		tsc2005_pdata.esd_timeout_ms = 0;
+	}
+}
+
 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
 
 static struct omap_smc91x_platform_data board_smc91x_data = {
@@ -792,6 +833,7 @@
 	board_smc91x_init();
 	rx51_add_gpio_keys();
 	rx51_init_wl1251();
+	rx51_init_tsc2005();
 	spi_register_board_info(rx51_peripherals_spi_board_info,
 				ARRAY_SIZE(rx51_peripherals_spi_board_info));
 }
