openwrt/target/linux/omap24xx/patches-3.1/330-n800-tsc2301-platform.patch

From f0bb9e67f0f13021e5033fed3dfe8ef78fe6a538 Mon Sep 17 00:00:00 2001
From: Marat Radchenko <marat@slonopotamus.org>
Date: Tue, 18 Oct 2011 21:52:56 +0400
Subject: [PATCH 2/2] N800: add TSC2301 board info

This patch adds TSC2301 init logic to N800 board file
---
 arch/arm/mach-omap2/board-n8x0.c |  141 ++++++++++++++++++++++++++++++++++++--
 1 files changed, 135 insertions(+), 6 deletions(-)

--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -27,6 +27,7 @@
 #include <linux/spi/tsc2005.h>
 #include <linux/input.h>
 #include <linux/i2c/lm8323.h>
+#include <linux/spi/tsc2301.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -63,7 +64,75 @@ static struct omap2_mcspi_device_config
 };
 #endif
 
-static void __init tsc2005_set_config(void)
+#ifdef CONFIG_TOUCHSCREEN_TSC2301
+
+#define N800_KEYB_IRQ_GPIO		109
+
+static struct tsc2301_platform_data tsc2301_config = {
+	.reset_gpio	= 118,
+	.keymap = {
+		-1,		/* Event for bit 0 */
+		KEY_UP,		/* Event for bit 1 (up) */
+		KEY_F5,		/* Event for bit 2 (home) */
+		-1,		/* Event for bit 3 */
+		KEY_LEFT,	/* Event for bit 4 (left) */
+		KEY_ENTER,	/* Event for bit 5 (enter) */
+		KEY_RIGHT,	/* Event for bit 6 (right) */
+		-1,		/* Event for bit 7 */
+		KEY_ESC,	/* Event for bit 8 (cycle) */
+		KEY_DOWN,	/* Event for bit 9 (down) */
+		KEY_F4,		/* Event for bit 10 (menu) */
+		-1,		/* Event for bit 11 */
+		KEY_F8,		/* Event for bit 12 (Zoom-) */
+		KEY_F6,		/* Event for bit 13 (FS) */
+		KEY_F7,		/* Event for bit 14 (Zoom+) */
+		-1,		/* Event for bit 15 */
+	},
+	.kp_rep 	= 0,
+	.keyb_name	= "Internal keypad",
+};
+
+static struct omap2_mcspi_device_config tsc2301_mcspi_config = {
+	.turbo_mode	= 0,
+	.single_channel = 1,
+};
+
+/*
+  TODO(Marat Radchenko): better pass GPIO to tsc2301 driver and let it
+  allocate irq itself (as it is already done for touchscreen)
+ */
+static void tsc2301_dev_init(void)
+{
+	int r;
+	int gpio = N800_KEYB_IRQ_GPIO;
+
+	r = gpio_request(gpio, "tsc2301 KBD IRQ");
+	if (r >= 0) {
+		gpio_direction_input(gpio);
+		tsc2301_config.keyb_int = gpio_to_irq(gpio);
+	} else {
+		printk(KERN_ERR "unable to get KBD GPIO");
+	}
+
+	gpio = 103;
+	r = gpio_request(gpio, "tsc2301 DAV IRQ");
+	if (r >= 0) {
+		gpio_direction_input(gpio);
+		tsc2301_config.dav_int = gpio_to_irq(gpio);
+	} else {
+		printk(KERN_ERR "unable to get DAV GPIO");
+	}
+}
+
+#else
+
+static void __init tsc2301_dev_init(void)
+{
+}
+
+#endif
+
+static void __init n8x0_ts_set_config(void)
 {
 	const struct omap_lcd_config *conf;
 
@@ -94,6 +163,37 @@ static void __init tsc2005_set_config(vo
 			tsc2005_config.ts_x_plate_ohm = 200;
 		}
 #endif
+
+#ifdef CONFIG_TOUCHSCREEN_TSC2301
+		if (strcmp(conf->panel_name, "lph8923") == 0) {
+			tsc2301_config.ts_x_plate_ohm	= 180;
+			tsc2301_config.ts_hw_avg	= 8;
+			tsc2301_config.ts_max_pressure	= 2048;
+			tsc2301_config.ts_touch_pressure = 400;
+			tsc2301_config.ts_stab_time	= 100;
+			tsc2301_config.ts_pressure_fudge = 2;
+			tsc2301_config.ts_x_max		= 4096;
+			tsc2301_config.ts_x_fudge	= 4;
+			tsc2301_config.ts_y_max		= 4096;
+			tsc2301_config.ts_y_fudge	= 7;
+		} else if (strcmp(conf->panel_name, "ls041y3") == 0) {
+			tsc2301_config.ts_x_plate_ohm	= 280;
+			tsc2301_config.ts_hw_avg	= 8;
+			tsc2301_config.ts_touch_pressure = 400;
+			tsc2301_config.ts_max_pressure	= 2048;
+			tsc2301_config.ts_stab_time	= 1000;
+			tsc2301_config.ts_pressure_fudge = 2;
+			tsc2301_config.ts_x_max		= 4096;
+			tsc2301_config.ts_x_fudge	= 4;
+			tsc2301_config.ts_y_max		= 4096;
+			tsc2301_config.ts_y_fudge	= 7;
+		} else {
+			printk(KERN_ERR "Unknown panel type, set default "
+			       "touchscreen configuration\n");
+			tsc2301_config.ts_x_plate_ohm	= 200;
+			tsc2301_config.ts_stab_time	= 100;
+		}
+#endif
 	}
 }
 
@@ -347,13 +447,12 @@ static void __init n8x0_usb_init(void) {
 
 #endif /*CONFIG_USB_MUSB_TUSB6010 */
 
-
 static struct omap2_mcspi_device_config p54spi_mcspi_config = {
 	.turbo_mode	= 0,
 	.single_channel = 1,
 };
 
-static struct spi_board_info n800_spi_board_info[] __initdata = {
+static struct spi_board_info n8x0_common_spi_board_info[] __initdata = {
 	{
 		.modalias	= "lcd_mipid",
 		.bus_num	= 1,
@@ -369,6 +468,10 @@ static struct spi_board_info n800_spi_bo
 		.max_speed_hz   = 48000000,
 		.controller_data = &p54spi_mcspi_config,
 	},
+};
+
+static struct spi_board_info n810_spi_board_info[] __initdata = {
+#ifdef CONFIG_TOUCHSCREEN_TSC2005
 	{
 		.modalias	 = "tsc2005",
 		.bus_num	 = 1,
@@ -378,6 +481,20 @@ static struct spi_board_info n800_spi_bo
 		.controller_data = &tsc2005_mcspi_config,
 		.platform_data   = &tsc2005_config,
 	},
+#endif
+};
+
+static struct spi_board_info n800_spi_board_info[] __initdata = {
+#if defined(CONFIG_TOUCHSCREEN_TSC2301)
+	{
+		.modalias	 = "tsc2301",
+		.bus_num	 = 1,
+		.chip_select	 = 0,
+		.max_speed_hz    = 6000000,
+		.controller_data = &tsc2301_mcspi_config,
+		.platform_data   = &tsc2301_config,
+	},
+#endif
 };
 
 #if defined(CONFIG_MTD_ONENAND_OMAP2) || \
@@ -1023,9 +1140,17 @@ static void __init n8x0_init_machine(voi
 	n8x0_bt_init();
 
 	/* FIXME: add n810 spi devices */
-	tsc2005_set_config();
-	spi_register_board_info(n800_spi_board_info,
-				ARRAY_SIZE(n800_spi_board_info));
+	n8x0_ts_set_config();
+
+	spi_register_board_info(n8x0_common_spi_board_info,
+				ARRAY_SIZE(n8x0_common_spi_board_info));
+	if (machine_is_nokia_n800())
+		spi_register_board_info(n800_spi_board_info,
+					ARRAY_SIZE(n800_spi_board_info));
+	else
+		spi_register_board_info(n810_spi_board_info,
+					ARRAY_SIZE(n810_spi_board_info));
+
 	omap_register_i2c_bus(1, 400, n8x0_i2c_board_info_1,
 			      ARRAY_SIZE(n8x0_i2c_board_info_1));
 	omap_register_i2c_bus(2, 400, NULL, 0);
@@ -1035,6 +1160,8 @@ static void __init n8x0_init_machine(voi
 	board_serial_init();
 	n8x0_mipid_init();
 	n8x0_blizzard_init();
+	if (machine_is_nokia_n800())
+		tsc2301_dev_init();
 	gpmc_onenand_init(board_onenand_data);
 	n8x0_mmc_init();
 	n8x0_usb_init();