openwrt-owl/target/linux/omap24xx/patches-3.1/310-n810-lcd.patch

Index: linux-3.1/arch/arm/mach-omap2/board-n8x0.c
===================================================================
--- linux-3.1.orig/arch/arm/mach-omap2/board-n8x0.c	2011-10-30 21:14:31.600257909 +0100
+++ linux-3.1/arch/arm/mach-omap2/board-n8x0.c	2011-10-30 21:14:46.712140689 +0100
@@ -24,6 +24,7 @@
 #include <linux/spi/spi.h>
 #include <linux/usb/musb.h>
 #include <sound/tlv320aic3x.h>
+#include <linux/spi/tsc2005.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -43,6 +44,66 @@ static int slot1_cover_open;
 static int slot2_cover_open;
 static struct device *mmc_device;
 
+#define	RX51_TSC2005_RESET_GPIO	94
+#define	RX51_TSC2005_IRQ_GPIO	106
+
+#ifdef CONFIG_TOUCHSCREEN_TSC2005
+static struct tsc2005_platform_data tsc2005_config;
+static void rx51_tsc2005_set_reset(bool enable)
+{
+	gpio_set_value(RX51_TSC2005_RESET_GPIO, enable);
+}
+
+static struct omap2_mcspi_device_config tsc2005_mcspi_config = {
+	.turbo_mode	= 0,
+	.single_channel = 1,
+};
+#endif
+
+static void __init tsc2005_set_config(void)
+{
+	const struct omap_lcd_config *conf;
+
+	conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
+	if (conf != NULL) {
+#ifdef CONFIG_TOUCHSCREEN_TSC2005
+		if (strcmp(conf->panel_name, "lph8923") == 0) {
+			tsc2005_config.ts_x_plate_ohm = 180;
+			tsc2005_config.ts_pressure_max = 2048;
+			tsc2005_config.ts_pressure_fudge = 2;
+			tsc2005_config.ts_x_max = 4096;
+			tsc2005_config.ts_x_fudge = 4;
+			tsc2005_config.ts_y_max = 4096;
+			tsc2005_config.ts_y_fudge = 7;
+			tsc2005_config.set_reset = rx51_tsc2005_set_reset;
+		} else if (strcmp(conf->panel_name, "ls041y3") == 0) {
+			tsc2005_config.ts_x_plate_ohm = 280;
+			tsc2005_config.ts_pressure_max = 2048;
+			tsc2005_config.ts_pressure_fudge = 2;
+			tsc2005_config.ts_x_max = 4096;
+			tsc2005_config.ts_x_fudge = 4;
+			tsc2005_config.ts_y_max = 4096;
+			tsc2005_config.ts_y_fudge = 7;
+			tsc2005_config.set_reset = rx51_tsc2005_set_reset;
+		} else {
+			printk(KERN_ERR "Unknown panel type, set default "
+			       "touchscreen configuration\n");
+			tsc2005_config.ts_x_plate_ohm = 200;
+		}
+#endif
+	}
+}
+
+static struct omap2_mcspi_device_config mipid_mcspi_config = {
+	.turbo_mode	= 0,
+	.single_channel	= 1,
+};
+
+extern struct mipid_platform_data n8x0_mipid_platform_data;
+
+extern void n8x0_mipid_init(void);
+extern void n8x0_blizzard_init(void);
+
 #define TUSB6010_ASYNC_CS	1
 #define TUSB6010_SYNC_CS	4
 #define TUSB6010_GPIO_INT	58
@@ -145,12 +206,29 @@ static struct omap2_mcspi_device_config
 
 static struct spi_board_info n800_spi_board_info[] __initdata = {
 	{
+		.modalias	= "lcd_mipid",
+		.bus_num	= 1,
+		.chip_select	= 1,
+		.max_speed_hz	= 4000000,
+		.controller_data= &mipid_mcspi_config,
+		.platform_data	= &n8x0_mipid_platform_data,
+	},
+	{
 		.modalias	= "p54spi",
 		.bus_num	= 2,
 		.chip_select	= 0,
 		.max_speed_hz   = 48000000,
 		.controller_data = &p54spi_mcspi_config,
 	},
+	{
+		.modalias	 = "tsc2005",
+		.bus_num	 = 1,
+		.chip_select	 = 0,
+		.irq		 = OMAP_GPIO_IRQ(RX51_TSC2005_IRQ_GPIO),
+		.max_speed_hz    = 6000000,
+		.controller_data = &tsc2005_mcspi_config,
+		.platform_data   = &tsc2005_config,
+	},
 };
 
 #if defined(CONFIG_MTD_ONENAND_OMAP2) || \
@@ -789,6 +867,7 @@ static void __init n8x0_init_machine(voi
 	n8x0_cbus_init();
 
 	/* FIXME: add n810 spi devices */
+	tsc2005_set_config();
 	spi_register_board_info(n800_spi_board_info,
 				ARRAY_SIZE(n800_spi_board_info));
 	omap_register_i2c_bus(1, 400, n8x0_i2c_board_info_1,
@@ -798,6 +877,8 @@ static void __init n8x0_init_machine(voi
 		i2c_register_board_info(2, n810_i2c_board_info_2,
 					ARRAY_SIZE(n810_i2c_board_info_2));
 	board_serial_init();
+	n8x0_mipid_init();
+	n8x0_blizzard_init();
 	gpmc_onenand_init(board_onenand_data);
 	n8x0_mmc_init();
 	n8x0_usb_init();
Index: linux-3.1/arch/arm/mach-omap2/board-n8x0-lcd.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-3.1/arch/arm/mach-omap2/board-n8x0-lcd.c	2011-10-30 21:14:46.712140689 +0100
@@ -0,0 +1,231 @@
+/*
+ * linux/arch/arm/mach-omap2/board-n8x0.c
+ *
+ * Copyright (C) 2005-2009 Nokia Corporation
+ * Author: Juha Yrjola <juha.yrjola@nokia.com>
+ *
+ * Modified from mach-omap2/board-generic.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/omapfb.h>
+
+#include <plat/lcd_mipid.h>
+#include <plat/blizzard.h>
+
+#include "../../../drivers/cbus/tahvo.h"
+
+
+struct tahvo_pwm_device {
+	struct device *dev;
+	int tahvo_7bit_backlight;
+};
+
+static struct tahvo_pwm_device *tahvo_pwm;
+
+static unsigned int tahvo_pwm_get_backlight_level(struct tahvo_pwm_device *pd)
+{
+	unsigned int mask;
+
+	if (pd->tahvo_7bit_backlight)
+		mask = 0x7f;
+	else
+		mask = 0x0f;
+	return tahvo_read_reg(pd->dev, TAHVO_REG_LEDPWMR) & mask;
+}
+
+static unsigned int tahvo_pwm_get_max_backlight_level(struct tahvo_pwm_device *pd)
+{
+	if (pd->tahvo_7bit_backlight)
+		return 0x7f;
+	return 0x0f;
+}
+
+static void tahvo_pwm_set_backlight_level(struct tahvo_pwm_device *pd, unsigned int level)
+{
+	unsigned int max_level;
+
+	max_level = tahvo_pwm_get_max_backlight_level(pd);
+	if (level > max_level)
+		level = max_level;
+	tahvo_write_reg(pd->dev, TAHVO_REG_LEDPWMR, level);
+}
+
+static int __init n8x0_tahvo_pwm_probe(struct platform_device *pdev)
+{
+	struct tahvo_pwm_device *pd;
+	unsigned int rev, id;
+
+	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
+	if (WARN_ON(!pd))
+		return -ENOMEM;
+	pd->dev = &pdev->dev;
+
+	rev = tahvo_read_reg(pd->dev, TAHVO_REG_ASICR);
+	id = (rev >> 8) & 0xff;
+	if (id == 0x03) {
+		if ((rev & 0xff) >= 0x50)
+			pd->tahvo_7bit_backlight = 1;
+	} else if (id == 0x0b)
+		pd->tahvo_7bit_backlight = 1;
+
+	dev_set_drvdata(pd->dev, pd);
+	tahvo_pwm = pd;
+
+	return 0;
+}
+
+static struct platform_driver n8x0_tahvo_pwm_driver = {
+	.driver		= {
+		.name	= "tahvo-pwm",
+	},
+};
+
+static int __init n8x0_tahvo_pwm_init(void)
+{
+	return platform_driver_probe(&n8x0_tahvo_pwm_driver, n8x0_tahvo_pwm_probe);
+}
+fs_initcall(n8x0_tahvo_pwm_init);
+
+static int n8x0_get_backlight_level(struct mipid_platform_data *pdata)
+{
+	return tahvo_pwm_get_backlight_level(tahvo_pwm);
+}
+
+static int n8x0_get_max_backlight_level(struct mipid_platform_data *pdata)
+{
+	return tahvo_pwm_get_max_backlight_level(tahvo_pwm);
+}
+
+static void n8x0_set_backlight_level(struct mipid_platform_data *pdata, int level)
+{
+	tahvo_pwm_set_backlight_level(tahvo_pwm, level);
+}
+
+#define N8X0_BLIZZARD_POWERDOWN_GPIO	15
+
+// MIPID LCD Panel
+
+static void mipid_shutdown(struct mipid_platform_data *pdata)
+{
+	if (pdata->nreset_gpio != -1) {
+		pr_info("shutdown LCD\n");
+		gpio_set_value(pdata->nreset_gpio, 0);
+		msleep(120);
+	}
+}
+
+struct mipid_platform_data n8x0_mipid_platform_data = {
+	.shutdown = mipid_shutdown,
+	.get_bklight_level = n8x0_get_backlight_level,
+	.set_bklight_level = n8x0_set_backlight_level,
+	.get_bklight_max = n8x0_get_max_backlight_level,
+};
+
+void __init n8x0_mipid_init(void)
+{
+	const struct omap_lcd_config *conf;
+	int err;
+
+	conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
+	if (conf != NULL) {
+		n8x0_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
+		n8x0_mipid_platform_data.data_lines = conf->data_lines;
+		if (conf->nreset_gpio != -1) {
+			err = gpio_request(conf->nreset_gpio, "MIPID nreset");
+			if (err) {
+				printk(KERN_ERR "N8x0 MIPID failed to request nreset GPIO %d\n",
+				       conf->nreset_gpio);
+			} else {
+				err = gpio_direction_output(conf->nreset_gpio, 1);
+				if (err) {
+					printk(KERN_ERR "N8x0 MIPID failed to set nreset GPIO %d\n",
+					       conf->nreset_gpio);
+				}
+			}
+		}
+		printk(KERN_INFO "N8x0 MIPID config loaded");
+	}
+	else
+		printk(KERN_INFO "N8x0 MIPID config not provided");
+}
+
+
+// Epson Blizzard LCD Controller
+
+static struct {
+	struct clk *sys_ck;
+} blizzard;
+
+static int blizzard_get_clocks(void)
+{
+	blizzard.sys_ck = clk_get(0, "osc_ck");
+	if (IS_ERR(blizzard.sys_ck)) {
+		printk(KERN_ERR "can't get Blizzard clock\n");
+		return PTR_ERR(blizzard.sys_ck);
+	}
+	return 0;
+}
+
+static unsigned long blizzard_get_clock_rate(struct device *dev)
+{
+	return clk_get_rate(blizzard.sys_ck);
+}
+
+static void blizzard_enable_clocks(int enable)
+{
+	if (enable)
+		clk_enable(blizzard.sys_ck);
+	else
+		clk_disable(blizzard.sys_ck);
+}
+
+static void blizzard_power_up(struct device *dev)
+{
+	/* Vcore to 1.475V */
+	tahvo_set_clear_reg_bits(tahvo_pwm->dev, 0x07, 0, 0xf);
+	msleep(10);
+
+	blizzard_enable_clocks(1);
+	gpio_set_value(N8X0_BLIZZARD_POWERDOWN_GPIO, 1);
+}
+
+static void blizzard_power_down(struct device *dev)
+{
+	gpio_set_value(N8X0_BLIZZARD_POWERDOWN_GPIO, 0);
+	blizzard_enable_clocks(0);
+
+	/* Vcore to 1.005V */
+	tahvo_set_clear_reg_bits(tahvo_pwm->dev, 0x07, 0xf, 0);
+}
+
+static struct blizzard_platform_data n8x0_blizzard_data = {
+	.power_up	= blizzard_power_up,
+	.power_down	= blizzard_power_down,
+	.get_clock_rate	= blizzard_get_clock_rate,
+	.te_connected	= 1,
+};
+
+void __init n8x0_blizzard_init(void)
+{
+	int r;
+
+	r = gpio_request(N8X0_BLIZZARD_POWERDOWN_GPIO, "Blizzard pd");
+	if (r < 0)
+	{
+		printk(KERN_ERR "Can't get N8x0 Blizzard powerdown GPIO %d\n", N8X0_BLIZZARD_POWERDOWN_GPIO);
+		return;
+	}
+	gpio_direction_output(N8X0_BLIZZARD_POWERDOWN_GPIO, 1);
+
+	blizzard_get_clocks();
+	omapfb_set_ctrl_platform_data(&n8x0_blizzard_data);
+
+	printk(KERN_INFO "N8x0 Blizzard initialized");
+}
Index: linux-3.1/arch/arm/mach-omap2/Makefile
===================================================================
--- linux-3.1.orig/arch/arm/mach-omap2/Makefile	2011-10-30 21:14:31.608257847 +0100
+++ linux-3.1/arch/arm/mach-omap2/Makefile	2011-10-30 21:14:46.712140689 +0100
@@ -209,6 +209,7 @@ obj-$(CONFIG_MACH_OMAP_3430SDP)		+= boar
 					   hsmmc.o \
 					   board-flash.o
 obj-$(CONFIG_MACH_NOKIA_N8X0)		+= board-n8x0.o
+obj-$(CONFIG_MACH_NOKIA_N8X0)		+= board-n8x0-lcd.o
 obj-$(CONFIG_MACH_NOKIA_RM680)		+= board-rm680.o \
 					   sdram-nokia.o \
 					   hsmmc.o