Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	include/asm-x86/statfs.h

5 files changed, 1069 insertions, 3 deletions

diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 452b770d8cc..c72a1356295 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -24,6 +24,13 @@ config LCD_CLASS_DEVICE
 	  To have support for your specific LCD panel you will have to
 	  select the proper drivers which depend on this option.
 
+config LCD_CORGI
+	tristate "LCD Panel support for SHARP corgi/spitz model"
+	depends on LCD_CLASS_DEVICE && SPI_MASTER && PXA_SHARPSL
+	help
+	  Say y here to support the LCD panels usually found on SHARP
+	  corgi (C7x0) and spitz (Cxx00) models.
+
 config LCD_LTV350QV
 	tristate "Samsung LTV350QV LCD Panel"
 	depends on LCD_CLASS_DEVICE && SPI_MASTER
@@ -44,6 +51,14 @@ config LCD_ILI9320
 	  If you have a panel based on the ILI9320 controller chip
 	  then say y to include a power driver for it.
 
+config LCD_TDO24M
+	tristate "Toppoly TDO24M LCD Panels support"
+	depends on LCD_CLASS_DEVICE && SPI_MASTER
+	default n
+	help
+	  If you have a Toppoly TDO24M series LCD panel, say y here to
+	  include the support for it.
+
 config LCD_VGG2432A4
 	tristate "VGG2432A4 LCM device support"
 	depends on BACKLIGHT_LCD_SUPPORT && LCD_CLASS_DEVICE && SPI_MASTER
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index b405aace803..3ec551eb472 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -1,10 +1,12 @@
 # Backlight & LCD drivers
 
 obj-$(CONFIG_LCD_CLASS_DEVICE)     += lcd.o
+obj-$(CONFIG_LCD_CORGI)		   += corgi_lcd.o
 obj-$(CONFIG_LCD_LTV350QV)	   += ltv350qv.o
 obj-$(CONFIG_LCD_ILI9320)	   += ili9320.o
 obj-$(CONFIG_LCD_PLATFORM)	   += platform_lcd.o
 obj-$(CONFIG_LCD_VGG2432A4)	   += vgg2432a4.o
+obj-$(CONFIG_LCD_TDO24M)	   += tdo24m.o
 
 obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
 obj-$(CONFIG_BACKLIGHT_ATMEL_PWM)    += atmel-pwm-bl.o
diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c
new file mode 100644
index 00000000000..2afd47eefe7
--- /dev/null
+++ b/drivers/video/backlight/corgi_lcd.c
@@ -0,0 +1,641 @@
+/*
+ *  LCD/Backlight Driver for Sharp Zaurus Handhelds (various models)
+ *
+ *  Copyright (c) 2004-2006 Richard Purdie
+ *
+ *  Based on Sharp's 2.4 Backlight Driver
+ *
+ *  Copyright (c) 2008 Marvell International Ltd.
+ *  	Converted to SPI device based LCD/Backlight device driver
+ *  	by Eric Miao <eric.miao@marvell.com>
+ *
+ *  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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/fb.h>
+#include <linux/lcd.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/corgi_lcd.h>
+#include <asm/mach/sharpsl_param.h>
+
+#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
+
+/* Register Addresses */
+#define RESCTL_ADRS     0x00
+#define PHACTRL_ADRS    0x01
+#define DUTYCTRL_ADRS   0x02
+#define POWERREG0_ADRS  0x03
+#define POWERREG1_ADRS  0x04
+#define GPOR3_ADRS      0x05
+#define PICTRL_ADRS     0x06
+#define POLCTRL_ADRS    0x07
+
+/* Register Bit Definitions */
+#define RESCTL_QVGA     0x01
+#define RESCTL_VGA      0x00
+
+#define POWER1_VW_ON    0x01  /* VW Supply FET ON */
+#define POWER1_GVSS_ON  0x02  /* GVSS(-8V) Power Supply ON */
+#define POWER1_VDD_ON   0x04  /* VDD(8V),SVSS(-4V) Power Supply ON */
+
+#define POWER1_VW_OFF   0x00  /* VW Supply FET OFF */
+#define POWER1_GVSS_OFF 0x00  /* GVSS(-8V) Power Supply OFF */
+#define POWER1_VDD_OFF  0x00  /* VDD(8V),SVSS(-4V) Power Supply OFF */
+
+#define POWER0_COM_DCLK 0x01  /* COM Voltage DC Bias DAC Serial Data Clock */
+#define POWER0_COM_DOUT 0x02  /* COM Voltage DC Bias DAC Serial Data Out */
+#define POWER0_DAC_ON   0x04  /* DAC Power Supply ON */
+#define POWER0_COM_ON   0x08  /* COM Power Supply ON */
+#define POWER0_VCC5_ON  0x10  /* VCC5 Power Supply ON */
+
+#define POWER0_DAC_OFF  0x00  /* DAC Power Supply OFF */
+#define POWER0_COM_OFF  0x00  /* COM Power Supply OFF */
+#define POWER0_VCC5_OFF 0x00  /* VCC5 Power Supply OFF */
+
+#define PICTRL_INIT_STATE      0x01
+#define PICTRL_INIOFF          0x02
+#define PICTRL_POWER_DOWN      0x04
+#define PICTRL_COM_SIGNAL_OFF  0x08
+#define PICTRL_DAC_SIGNAL_OFF  0x10
+
+#define POLCTRL_SYNC_POL_FALL  0x01
+#define POLCTRL_EN_POL_FALL    0x02
+#define POLCTRL_DATA_POL_FALL  0x04
+#define POLCTRL_SYNC_ACT_H     0x08
+#define POLCTRL_EN_ACT_L       0x10
+
+#define POLCTRL_SYNC_POL_RISE  0x00
+#define POLCTRL_EN_POL_RISE    0x00
+#define POLCTRL_DATA_POL_RISE  0x00
+#define POLCTRL_SYNC_ACT_L     0x00
+#define POLCTRL_EN_ACT_H       0x00
+
+#define PHACTRL_PHASE_MANUAL   0x01
+#define DEFAULT_PHAD_QVGA     (9)
+#define DEFAULT_COMADJ        (125)
+
+struct corgi_lcd {
+	struct spi_device	*spi_dev;
+	struct lcd_device	*lcd_dev;
+	struct backlight_device	*bl_dev;
+
+	int	limit_mask;
+	int	intensity;
+	int	power;
+	int	mode;
+	char	buf[2];
+
+	int	gpio_backlight_on;
+	int	gpio_backlight_cont;
+	int	gpio_backlight_cont_inverted;
+
+	void (*kick_battery)(void);
+};
+
+static int corgi_ssp_lcdtg_send(struct corgi_lcd *lcd, int reg, uint8_t val);
+
+static struct corgi_lcd *the_corgi_lcd;
+static unsigned long corgibl_flags;
+#define CORGIBL_SUSPENDED     0x01
+#define CORGIBL_BATTLOW       0x02
+
+/*
+ * This is only a psuedo I2C interface. We can't use the standard kernel
+ * routines as the interface is write only. We just assume the data is acked...
+ */
+static void lcdtg_ssp_i2c_send(struct corgi_lcd *lcd, uint8_t data)
+{
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS, data);
+	udelay(10);
+}
+
+static void lcdtg_i2c_send_bit(struct corgi_lcd *lcd, uint8_t data)
+{
+	lcdtg_ssp_i2c_send(lcd, data);
+	lcdtg_ssp_i2c_send(lcd, data | POWER0_COM_DCLK);
+	lcdtg_ssp_i2c_send(lcd, data);
+}
+
+static void lcdtg_i2c_send_start(struct corgi_lcd *lcd, uint8_t base)
+{
+	lcdtg_ssp_i2c_send(lcd, base | POWER0_COM_DCLK | POWER0_COM_DOUT);
+	lcdtg_ssp_i2c_send(lcd, base | POWER0_COM_DCLK);
+	lcdtg_ssp_i2c_send(lcd, base);
+}
+
+static void lcdtg_i2c_send_stop(struct corgi_lcd *lcd, uint8_t base)
+{
+	lcdtg_ssp_i2c_send(lcd, base);
+	lcdtg_ssp_i2c_send(lcd, base | POWER0_COM_DCLK);
+	lcdtg_ssp_i2c_send(lcd, base | POWER0_COM_DCLK | POWER0_COM_DOUT);
+}
+
+static void lcdtg_i2c_send_byte(struct corgi_lcd *lcd,
+				uint8_t base, uint8_t data)
+{
+	int i;
+	for (i = 0; i < 8; i++) {
+		if (data & 0x80)
+			lcdtg_i2c_send_bit(lcd, base | POWER0_COM_DOUT);
+		else
+			lcdtg_i2c_send_bit(lcd, base);
+		data <<= 1;
+	}
+}
+
+static void lcdtg_i2c_wait_ack(struct corgi_lcd *lcd, uint8_t base)
+{
+	lcdtg_i2c_send_bit(lcd, base);
+}
+
+static void lcdtg_set_common_voltage(struct corgi_lcd *lcd,
+				     uint8_t base_data, uint8_t data)
+{
+	/* Set Common Voltage to M62332FP via I2C */
+	lcdtg_i2c_send_start(lcd, base_data);
+	lcdtg_i2c_send_byte(lcd, base_data, 0x9c);
+	lcdtg_i2c_wait_ack(lcd, base_data);
+	lcdtg_i2c_send_byte(lcd, base_data, 0x00);
+	lcdtg_i2c_wait_ack(lcd, base_data);
+	lcdtg_i2c_send_byte(lcd, base_data, data);
+	lcdtg_i2c_wait_ack(lcd, base_data);
+	lcdtg_i2c_send_stop(lcd, base_data);
+}
+
+static int corgi_ssp_lcdtg_send(struct corgi_lcd *lcd, int adrs, uint8_t data)
+{
+	struct spi_message msg;
+	struct spi_transfer xfer = {
+		.len		= 1,
+		.cs_change	= 1,
+		.tx_buf		= lcd->buf,
+	};
+
+	lcd->buf[0] = ((adrs & 0x07) << 5) | (data & 0x1f);
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	return spi_sync(lcd->spi_dev, &msg);
+}
+
+/* Set Phase Adjust */
+static void lcdtg_set_phadadj(struct corgi_lcd *lcd, int mode)
+{
+	int adj;
+
+	switch(mode) {
+	case CORGI_LCD_MODE_VGA:
+		/* Setting for VGA */
+		adj = sharpsl_param.phadadj;
+		adj = (adj < 0) ? PHACTRL_PHASE_MANUAL :
+				  PHACTRL_PHASE_MANUAL | ((adj & 0xf) << 1);
+		break;
+	case CORGI_LCD_MODE_QVGA:
+	default:
+		/* Setting for QVGA */
+		adj = (DEFAULT_PHAD_QVGA << 1) | PHACTRL_PHASE_MANUAL;
+		break;
+	}
+
+	corgi_ssp_lcdtg_send(lcd, PHACTRL_ADRS, adj);
+}
+
+static void corgi_lcd_power_on(struct corgi_lcd *lcd)
+{
+	int comadj;
+
+	/* Initialize Internal Logic & Port */
+	corgi_ssp_lcdtg_send(lcd, PICTRL_ADRS,
+			PICTRL_POWER_DOWN | PICTRL_INIOFF |
+			PICTRL_INIT_STATE | PICTRL_COM_SIGNAL_OFF |
+			PICTRL_DAC_SIGNAL_OFF);
+
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_OFF |
+			POWER0_COM_OFF | POWER0_VCC5_OFF);
+
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF);
+
+	/* VDD(+8V), SVSS(-4V) ON */
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_ON);
+	mdelay(3);
+
+	/* DAC ON */
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON |
+			POWER0_COM_OFF | POWER0_VCC5_OFF);
+
+	/* INIB = H, INI = L  */
+	/* PICTL[0] = H , PICTL[1] = PICTL[2] = PICTL[4] = L */
+	corgi_ssp_lcdtg_send(lcd, PICTRL_ADRS,
+			PICTRL_INIT_STATE | PICTRL_COM_SIGNAL_OFF);
+
+	/* Set Common Voltage */
+	comadj = sharpsl_param.comadj;
+	if (comadj < 0)
+		comadj = DEFAULT_COMADJ;
+
+	lcdtg_set_common_voltage(lcd, POWER0_DAC_ON | POWER0_COM_OFF |
+				 POWER0_VCC5_OFF, comadj);
+
+	/* VCC5 ON, DAC ON */
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON |
+			POWER0_COM_OFF | POWER0_VCC5_ON);
+
+	/* GVSS(-8V) ON, VDD ON */
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_OFF | POWER1_GVSS_ON | POWER1_VDD_ON);
+	mdelay(2);
+
+	/* COM SIGNAL ON (PICTL[3] = L) */
+	corgi_ssp_lcdtg_send(lcd, PICTRL_ADRS, PICTRL_INIT_STATE);
+
+	/* COM ON, DAC ON, VCC5_ON */
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON |
+			POWER0_COM_ON | POWER0_VCC5_ON);
+
+	/* VW ON, GVSS ON, VDD ON */
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_ON | POWER1_GVSS_ON | POWER1_VDD_ON);
+
+	/* Signals output enable */
+	corgi_ssp_lcdtg_send(lcd, PICTRL_ADRS, 0);
+
+	/* Set Phase Adjust */
+	lcdtg_set_phadadj(lcd, lcd->mode);
+
+	/* Initialize for Input Signals from ATI */
+	corgi_ssp_lcdtg_send(lcd, POLCTRL_ADRS,
+			POLCTRL_SYNC_POL_RISE | POLCTRL_EN_POL_RISE |
+			POLCTRL_DATA_POL_RISE | POLCTRL_SYNC_ACT_L |
+			POLCTRL_EN_ACT_H);
+	udelay(1000);
+
+	switch (lcd->mode) {
+	case CORGI_LCD_MODE_VGA:
+		corgi_ssp_lcdtg_send(lcd, RESCTL_ADRS, RESCTL_VGA);
+		break;
+	case CORGI_LCD_MODE_QVGA:
+	default:
+		corgi_ssp_lcdtg_send(lcd, RESCTL_ADRS, RESCTL_QVGA);
+		break;
+	}
+}
+
+static void corgi_lcd_power_off(struct corgi_lcd *lcd)
+{
+	/* 60Hz x 2 frame = 16.7msec x 2 = 33.4 msec */
+	msleep(34);
+
+	/* (1)VW OFF */
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_OFF | POWER1_GVSS_ON | POWER1_VDD_ON);
+
+	/* (2)COM OFF */
+	corgi_ssp_lcdtg_send(lcd, PICTRL_ADRS, PICTRL_COM_SIGNAL_OFF);
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_ON);
+
+	/* (3)Set Common Voltage Bias 0V */
+	lcdtg_set_common_voltage(lcd, POWER0_DAC_ON | POWER0_COM_OFF |
+			POWER0_VCC5_ON, 0);
+
+	/* (4)GVSS OFF */
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_ON);
+
+	/* (5)VCC5 OFF */
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_OFF);
+
+	/* (6)Set PDWN, INIOFF, DACOFF */
+	corgi_ssp_lcdtg_send(lcd, PICTRL_ADRS,
+			PICTRL_INIOFF | PICTRL_DAC_SIGNAL_OFF |
+			PICTRL_POWER_DOWN | PICTRL_COM_SIGNAL_OFF);
+
+	/* (7)DAC OFF */
+	corgi_ssp_lcdtg_send(lcd, POWERREG0_ADRS,
+			POWER0_DAC_OFF | POWER0_COM_OFF | POWER0_VCC5_OFF);
+
+	/* (8)VDD OFF */
+	corgi_ssp_lcdtg_send(lcd, POWERREG1_ADRS,
+			POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF);
+}
+
+static int corgi_lcd_set_mode(struct lcd_device *ld, struct fb_videomode *m)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev);
+	int mode = CORGI_LCD_MODE_QVGA;
+
+	if (m->xres == 640 || m->xres == 480)
+		mode = CORGI_LCD_MODE_VGA;
+
+	if (lcd->mode == mode)
+		return 0;
+
+	lcdtg_set_phadadj(lcd, mode);
+
+	switch (mode) {
+	case CORGI_LCD_MODE_VGA:
+		corgi_ssp_lcdtg_send(lcd, RESCTL_ADRS, RESCTL_VGA);
+		break;
+	case CORGI_LCD_MODE_QVGA:
+	default:
+		corgi_ssp_lcdtg_send(lcd, RESCTL_ADRS, RESCTL_QVGA);
+		break;
+	}
+
+	lcd->mode = mode;
+	return 0;
+}
+
+static int corgi_lcd_set_power(struct lcd_device *ld, int power)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev);
+
+	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+		corgi_lcd_power_on(lcd);
+
+	if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+		corgi_lcd_power_off(lcd);
+
+	lcd->power = power;
+	return 0;
+}
+
+static int corgi_lcd_get_power(struct lcd_device *ld)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev);
+
+	return lcd->power;
+}
+
+static struct lcd_ops corgi_lcd_ops = {
+	.get_power	= corgi_lcd_get_power,
+	.set_power	= corgi_lcd_set_power,
+	.set_mode	= corgi_lcd_set_mode,
+};
+
+static int corgi_bl_get_intensity(struct backlight_device *bd)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&bd->dev);
+
+	return lcd->intensity;
+}
+
+static int corgi_bl_set_intensity(struct corgi_lcd *lcd, int intensity)
+{
+	int cont;
+
+	if (intensity > 0x10)
+		intensity += 0x10;
+
+	corgi_ssp_lcdtg_send(lcd, DUTYCTRL_ADRS, intensity);
+
+	/* Bit 5 via GPIO_BACKLIGHT_CONT */
+	cont = !!(intensity & 0x20) ^ lcd->gpio_backlight_cont_inverted;
+
+	if (gpio_is_valid(lcd->gpio_backlight_cont))
+		gpio_set_value(lcd->gpio_backlight_cont, cont);
+
+	if (gpio_is_valid(lcd->gpio_backlight_on))
+		gpio_set_value(lcd->gpio_backlight_on, intensity);
+
+	if (lcd->kick_battery)
+		lcd->kick_battery();
+
+	lcd->intensity = intensity;
+	return 0;
+}
+
+static int corgi_bl_update_status(struct backlight_device *bd)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&bd->dev);
+	int intensity = bd->props.brightness;
+
+	if (bd->props.power != FB_BLANK_UNBLANK)
+		intensity = 0;
+
+	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
+		intensity = 0;
+
+	if (corgibl_flags & CORGIBL_SUSPENDED)
+		intensity = 0;
+	if (corgibl_flags & CORGIBL_BATTLOW)
+		intensity &= lcd->limit_mask;
+
+	return corgi_bl_set_intensity(lcd, intensity);
+}
+
+void corgibl_limit_intensity(int limit)
+{
+	if (limit)
+		corgibl_flags |= CORGIBL_BATTLOW;
+	else
+		corgibl_flags &= ~CORGIBL_BATTLOW;
+
+	backlight_update_status(the_corgi_lcd->bl_dev);
+}
+EXPORT_SYMBOL(corgibl_limit_intensity);
+
+static struct backlight_ops corgi_bl_ops = {
+	.get_brightness	= corgi_bl_get_intensity,
+	.update_status  = corgi_bl_update_status,
+};
+
+#ifdef CONFIG_PM
+static int corgi_lcd_suspend(struct spi_device *spi, pm_message_t state)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev);
+
+	corgibl_flags |= CORGIBL_SUSPENDED;
+	corgi_bl_set_intensity(lcd, 0);
+	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_POWERDOWN);
+	return 0;
+}
+
+static int corgi_lcd_resume(struct spi_device *spi)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev);
+
+	corgibl_flags &= ~CORGIBL_SUSPENDED;
+	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK);
+	backlight_update_status(lcd->bl_dev);
+	return 0;
+}
+#else
+#define corgi_lcd_suspend	NULL
+#define corgi_lcd_resume	NULL
+#endif
+
+static int setup_gpio_backlight(struct corgi_lcd *lcd,
+				struct corgi_lcd_platform_data *pdata)
+{
+	struct spi_device *spi = lcd->spi_dev;
+	int err;
+
+	lcd->gpio_backlight_on = -1;
+	lcd->gpio_backlight_cont = -1;
+
+	if (gpio_is_valid(pdata->gpio_backlight_on)) {
+		err = gpio_request(pdata->gpio_backlight_on, "BL_ON");
+		if (err) {
+			dev_err(&spi->dev, "failed to request GPIO%d for "
+				"backlight_on\n", pdata->gpio_backlight_on);
+			return err;
+		}
+
+		lcd->gpio_backlight_on = pdata->gpio_backlight_on;
+		gpio_direction_output(lcd->gpio_backlight_on, 0);
+	}
+
+	if (gpio_is_valid(pdata->gpio_backlight_cont)) {
+		err = gpio_request(pdata->gpio_backlight_cont, "BL_CONT");
+		if (err) {
+			dev_err(&spi->dev, "failed to request GPIO%d for "
+				"backlight_cont\n", pdata->gpio_backlight_cont);
+			goto err_free_backlight_on;
+		}
+
+		lcd->gpio_backlight_cont = pdata->gpio_backlight_cont;
+
+		/* spitz and akita use both GPIOs for backlight, and
+		 * have inverted polarity of GPIO_BACKLIGHT_CONT
+		 */
+		if (gpio_is_valid(lcd->gpio_backlight_on)) {
+			lcd->gpio_backlight_cont_inverted = 1;
+			gpio_direction_output(lcd->gpio_backlight_cont, 1);
+		} else {
+			lcd->gpio_backlight_cont_inverted = 0;
+			gpio_direction_output(lcd->gpio_backlight_cont, 0);
+		}
+	}
+	return 0;
+
+err_free_backlight_on:
+	if (gpio_is_valid(lcd->gpio_backlight_on))
+		gpio_free(lcd->gpio_backlight_on);
+	return err;
+}
+
+static int __devinit corgi_lcd_probe(struct spi_device *spi)
+{
+	struct corgi_lcd_platform_data *pdata = spi->dev.platform_data;
+	struct corgi_lcd *lcd;
+	int ret = 0;
+
+	if (pdata == NULL) {
+		dev_err(&spi->dev, "platform data not available\n");
+		return -EINVAL;
+	}
+
+	lcd = kzalloc(sizeof(struct corgi_lcd), GFP_KERNEL);
+	if (!lcd) {
+		dev_err(&spi->dev, "failed to allocate memory\n");
+		return -ENOMEM;
+	}
+
+	lcd->spi_dev = spi;
+
+	lcd->lcd_dev = lcd_device_register("corgi_lcd", &spi->dev,
+					lcd, &corgi_lcd_ops);
+	if (IS_ERR(lcd->lcd_dev)) {
+		ret = PTR_ERR(lcd->lcd_dev);
+		goto err_free_lcd;
+	}
+	lcd->power = FB_BLANK_POWERDOWN;
+	lcd->mode = (pdata) ? pdata->init_mode : CORGI_LCD_MODE_VGA;
+
+	lcd->bl_dev = backlight_device_register("corgi_bl", &spi->dev,
+					lcd, &corgi_bl_ops);
+	if (IS_ERR(lcd->bl_dev)) {
+		ret = PTR_ERR(lcd->bl_dev);
+		goto err_unregister_lcd;
+	}
+	lcd->bl_dev->props.max_brightness = pdata->max_intensity;
+	lcd->bl_dev->props.brightness = pdata->default_intensity;
+	lcd->bl_dev->props.power = FB_BLANK_UNBLANK;
+
+	ret = setup_gpio_backlight(lcd, pdata);
+	if (ret)
+		goto err_unregister_bl;
+
+	lcd->kick_battery = pdata->kick_battery;
+
+	dev_set_drvdata(&spi->dev, lcd);
+	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK);
+	backlight_update_status(lcd->bl_dev);
+
+	lcd->limit_mask = pdata->limit_mask;
+	the_corgi_lcd = lcd;
+	return 0;
+
+err_unregister_bl:
+	backlight_device_unregister(lcd->bl_dev);
+err_unregister_lcd:
+	lcd_device_unregister(lcd->lcd_dev);
+err_free_lcd:
+	kfree(lcd);
+	return ret;
+}
+
+static int __devexit corgi_lcd_remove(struct spi_device *spi)
+{
+	struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev);
+
+	lcd->bl_dev->props.power = FB_BLANK_UNBLANK;
+	lcd->bl_dev->props.brightness = 0;
+	backlight_update_status(lcd->bl_dev);
+	backlight_device_unregister(lcd->bl_dev);
+
+	if (gpio_is_valid(lcd->gpio_backlight_on))
+		gpio_free(lcd->gpio_backlight_on);
+
+	if (gpio_is_valid(lcd->gpio_backlight_cont))
+		gpio_free(lcd->gpio_backlight_cont);
+
+	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_POWERDOWN);
+	lcd_device_unregister(lcd->lcd_dev);
+	kfree(lcd);
+
+	return 0;
+}
+
+static struct spi_driver corgi_lcd_driver = {
+	.driver		= {
+		.name	= "corgi-lcd",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= corgi_lcd_probe,
+	.remove		= __devexit_p(corgi_lcd_remove),
+	.suspend	= corgi_lcd_suspend,
+	.resume		= corgi_lcd_resume,
+};
+
+static int __init corgi_lcd_init(void)
+{
+	return spi_register_driver(&corgi_lcd_driver);
+}
+module_init(corgi_lcd_init);
+
+static void __exit corgi_lcd_exit(void)
+{
+	spi_unregister_driver(&corgi_lcd_driver);
+}
+module_exit(corgi_lcd_exit);
+
+MODULE_DESCRIPTION("LCD and backlight driver for SHARP C7x0/Cxx00");
+MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index b15b2b84a6f..8e1731d3b22 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -27,14 +27,26 @@ static int fb_notifier_callback(struct notifier_block *self,
 	struct fb_event *evdata = data;
 
 	/* If we aren't interested in this event, skip it immediately ... */
-	if (event != FB_EVENT_BLANK)
+	switch (event) {
+	case FB_EVENT_BLANK:
+	case FB_EVENT_MODE_CHANGE:
+	case FB_EVENT_MODE_CHANGE_ALL:
+		break;
+	default:
 		return 0;
+	}
 
 	ld = container_of(self, struct lcd_device, fb_notif);
+	if (!ld->ops)
+		return 0;
+
 	mutex_lock(&ld->ops_lock);
-	if (ld->ops)
-		if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info))
+	if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info)) {
+		if (event == FB_EVENT_BLANK)
 			ld->ops->set_power(ld, *(int *)evdata->data);
+		else
+			ld->ops->set_mode(ld, evdata->data);
+	}
 	mutex_unlock(&ld->ops_lock);
 	return 0;
 }
diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
new file mode 100644
index 00000000000..8427669162e
--- /dev/null
+++ b/drivers/video/backlight/tdo24m.c
@@ -0,0 +1,396 @@
+/*
+ * tdo24m - SPI-based drivers for Toppoly TDO24M series LCD panels
+ *
+ * Copyright (C) 2008 Marvell International Ltd.
+ * 	Eric Miao <eric.miao@marvell.com>
+ *
+ *  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
+ *  publishhed by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/spi/spi.h>
+#include <linux/fb.h>
+#include <linux/lcd.h>
+
+#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
+
+#define TDO24M_SPI_BUFF_SIZE	(4)
+#define MODE_QVGA	0
+#define MODE_VGA	1
+
+struct tdo24m {
+	struct spi_device	*spi_dev;
+	struct lcd_device	*lcd_dev;
+
+	struct spi_message	msg;
+	struct spi_transfer	xfer;
+	uint8_t			*buf;
+
+	int			power;
+	int			mode;
+};
+
+/* use bit 30, 31 as the indicator of command parameter number */
+#define CMD0(x)		((0 << 30) | (x))
+#define CMD1(x, x1)	((1 << 30) | ((x) << 9) | 0x100 | (x1))
+#define CMD2(x, x1, x2)	((2 << 30) | ((x) << 18) | 0x20000 |\
+			((x1) << 9) | 0x100 | (x2))
+#define CMD_NULL	(-1)
+
+static uint32_t lcd_panel_reset[] = {
+	CMD0(0x1), /* reset */
+	CMD0(0x0), /* nop */
+	CMD0(0x0), /* nop */
+	CMD0(0x0), /* nop */
+	CMD_NULL,
+};
+
+static uint32_t lcd_panel_on[] = {
+	CMD0(0x29),		/* Display ON */
+	CMD2(0xB8, 0xFF, 0xF9),	/* Output Control */
+	CMD0(0x11),		/* Sleep out */
+	CMD1(0xB0, 0x16),	/* Wake */
+	CMD_NULL,
+};
+
+static uint32_t lcd_panel_off[] = {
+	CMD0(0x28),		/* Display OFF */
+	CMD2(0xB8, 0x80, 0x02),	/* Output Control */
+	CMD0(0x10),		/* Sleep in */
+	CMD1(0xB0, 0x00),	/* Deep stand by in */
+	CMD_NULL,
+};
+
+static uint32_t lcd_vga_pass_through[] = {
+	CMD1(0xB0, 0x16),
+	CMD1(0xBC, 0x80),
+	CMD1(0xE1, 0x00),
+	CMD1(0x36, 0x50),
+	CMD1(0x3B, 0x00),
+	CMD_NULL,
+};
+
+static uint32_t lcd_qvga_pass_through[] = {
+	CMD1(0xB0, 0x16),
+	CMD1(0xBC, 0x81),
+	CMD1(0xE1, 0x00),
+	CMD1(0x36, 0x50),
+	CMD1(0x3B, 0x22),
+	CMD_NULL,
+};
+
+static uint32_t lcd_vga_transfer[] = {
+	CMD1(0xcf, 0x02), 	/* Blanking period control (1) */
+	CMD2(0xd0, 0x08, 0x04),	/* Blanking period control (2) */
+	CMD1(0xd1, 0x01),	/* CKV timing control on/off */
+	CMD2(0xd2, 0x14, 0x00),	/* CKV 1,2 timing control */
+	CMD2(0xd3, 0x1a, 0x0f),	/* OEV timing control */
+	CMD2(0xd4, 0x1f, 0xaf),	/* ASW timing control (1) */
+	CMD1(0xd5, 0x14),	/* ASW timing control (2) */
+	CMD0(0x21),		/* Invert for normally black display */
+	CMD0(0x29),		/* Display on */
+	CMD_NULL,
+};
+
+static uint32_t lcd_qvga_transfer[] = {
+	CMD1(0xd6, 0x02),	/* Blanking period control (1) */
+	CMD2(0xd7, 0x08, 0x04),	/* Blanking period control (2) */
+	CMD1(0xd8, 0x01),	/* CKV timing control on/off */
+	CMD2(0xd9, 0x00, 0x08),	/* CKV 1,2 timing control */
+	CMD2(0xde, 0x05, 0x0a),	/* OEV timing control */
+	CMD2(0xdf, 0x0a, 0x19),	/* ASW timing control (1) */
+	CMD1(0xe0, 0x0a),	/* ASW timing control (2) */
+	CMD0(0x21),		/* Invert for normally black display */
+	CMD0(0x29),		/* Display on */
+	CMD_NULL,
+};
+
+static uint32_t lcd_panel_config[] = {
+	CMD2(0xb8, 0xff, 0xf9),	/* Output control */
+	CMD0(0x11),		/* sleep out */
+	CMD1(0xba, 0x01),	/* Display mode (1) */
+	CMD1(0xbb, 0x00),	/* Display mode (2) */
+	CMD1(0x3a, 0x60),	/* Display mode 18-bit RGB */
+	CMD1(0xbf, 0x10),	/* Drive system change control */
+	CMD1(0xb1, 0x56),	/* Booster operation setup */
+	CMD1(0xb2, 0x33),	/* Booster mode setup */
+	CMD1(0xb3, 0x11),	/* Booster frequency setup */
+	CMD1(0xb4, 0x02),	/* Op amp/system clock */
+	CMD1(0xb5, 0x35),	/* VCS voltage */
+	CMD1(0xb6, 0x40),	/* VCOM voltage */
+	CMD1(0xb7, 0x03),	/* External display signal */
+	CMD1(0xbd, 0x00),	/* ASW slew rate */
+	CMD1(0xbe, 0x00),	/* Dummy data for QuadData operation */
+	CMD1(0xc0, 0x11),	/* Sleep out FR count (A) */
+	CMD1(0xc1, 0x11),	/* Sleep out FR count (B) */
+	CMD1(0xc2, 0x11),	/* Sleep out FR count (C) */
+	CMD2(0xc3, 0x20, 0x40),	/* Sleep out FR count (D) */
+	CMD2(0xc4, 0x60, 0xc0),	/* Sleep out FR count (E) */
+	CMD2(0xc5, 0x10, 0x20),	/* Sleep out FR count (F) */
+	CMD1(0xc6, 0xc0),	/* Sleep out FR count (G) */
+	CMD2(0xc7, 0x33, 0x43),	/* Gamma 1 fine tuning (1) */
+	CMD1(0xc8, 0x44),	/* Gamma 1 fine tuning (2) */
+	CMD1(0xc9, 0x33),	/* Gamma 1 inclination adjustment */
+	CMD1(0xca, 0x00),	/* Gamma 1 blue offset adjustment */
+	CMD2(0xec, 0x01, 0xf0),	/* Horizontal clock cycles */
+	CMD_NULL,
+};
+
+static int tdo24m_writes(struct tdo24m *lcd, uint32_t *array)
+{
+	struct spi_transfer *x = &lcd->xfer;
+	uint32_t data, *p = array;
+	int nparams, err = 0;
+
+	for (; *p != CMD_NULL; p++) {
+
+		nparams = (*p >> 30) & 0x3;
+
+		data = *p << (7 - nparams);
+		switch (nparams) {
+		case 0:
+			lcd->buf[0] = (data >> 8) & 0xff;
+			lcd->buf[1] = data & 0xff;
+			break;
+		case 1:
+			lcd->buf[0] = (data >> 16) & 0xff;
+			lcd->buf[1] = (data >> 8) & 0xff;
+			lcd->buf[2] = data & 0xff;
+			break;
+		case 2:
+			lcd->buf[0] = (data >> 24) & 0xff;
+			lcd->buf[1] = (data >> 16) & 0xff;
+			lcd->buf[2] = (data >> 8) & 0xff;
+			lcd->buf[3] = data & 0xff;
+			break;
+		default:
+			continue;
+		}
+		x->len = nparams + 2;
+		err = spi_sync(lcd->spi_dev, &lcd->msg);
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static int tdo24m_adj_mode(struct tdo24m *lcd, int mode)
+{
+	switch (mode) {
+	case MODE_VGA:
+		tdo24m_writes(lcd, lcd_vga_pass_through);
+		tdo24m_writes(lcd, lcd_panel_config);
+		tdo24m_writes(lcd, lcd_vga_transfer);
+		break;
+	case MODE_QVGA:
+		tdo24m_writes(lcd, lcd_qvga_pass_through);
+		tdo24m_writes(lcd, lcd_panel_config);
+		tdo24m_writes(lcd, lcd_qvga_transfer);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	lcd->mode = mode;
+	return 0;
+}
+
+static int tdo24m_power_on(struct tdo24m *lcd)
+{
+	int err;
+
+	err = tdo24m_writes(lcd, lcd_panel_on);
+	if (err)
+		goto out;
+
+	err = tdo24m_writes(lcd, lcd_panel_reset);
+	if (err)
+		goto out;
+
+	err = tdo24m_adj_mode(lcd, lcd->mode);
+out:
+	return err;
+}
+
+static int tdo24m_power_off(struct tdo24m *lcd)
+{
+	return tdo24m_writes(lcd, lcd_panel_off);
+}
+
+static int tdo24m_power(struct tdo24m *lcd, int power)
+{
+	int ret = 0;
+
+	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+		ret = tdo24m_power_on(lcd);
+	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+		ret = tdo24m_power_off(lcd);
+
+	if (!ret)
+		lcd->power = power;
+
+	return ret;
+}
+
+
+static int tdo24m_set_power(struct lcd_device *ld, int power)
+{
+	struct tdo24m *lcd = lcd_get_data(ld);
+	return tdo24m_power(lcd, power);
+}
+
+static int tdo24m_get_power(struct lcd_device *ld)
+{
+	struct tdo24m *lcd = lcd_get_data(ld);
+	return lcd->power;
+}
+
+static int tdo24m_set_mode(struct lcd_device *ld, struct fb_videomode *m)
+{
+	struct tdo24m *lcd = lcd_get_data(ld);
+	int mode = MODE_QVGA;
+
+	if (m->xres == 640 || m->xres == 480)
+		mode = MODE_VGA;
+
+	if (lcd->mode == mode)
+		return 0;
+
+	return tdo24m_adj_mode(lcd, mode);
+}
+
+static struct lcd_ops tdo24m_ops = {
+	.get_power	= tdo24m_get_power,
+	.set_power	= tdo24m_set_power,
+	.set_mode	= tdo24m_set_mode,
+};
+
+static int __devinit tdo24m_probe(struct spi_device *spi)
+{
+	struct tdo24m *lcd;
+	struct spi_message *m;
+	struct spi_transfer *x;
+	int err;
+
+	spi->bits_per_word = 8;
+	spi->mode = SPI_MODE_3;
+	err = spi_setup(spi);
+	if (err)
+		return err;
+
+	lcd = kzalloc(sizeof(struct tdo24m), GFP_KERNEL);
+	if (!lcd)
+		return -ENOMEM;
+
+	lcd->spi_dev = spi;
+	lcd->power = FB_BLANK_POWERDOWN;
+	lcd->mode = MODE_VGA;	/* default to VGA */
+
+	lcd->buf = kmalloc(TDO24M_SPI_BUFF_SIZE, sizeof(GFP_KERNEL));
+	if (lcd->buf == NULL) {
+		kfree(lcd);
+		return -ENOMEM;
+	}
+
+	m = &lcd->msg;
+	x = &lcd->xfer;
+
+	spi_message_init(m);
+
+	x->tx_buf = &lcd->buf[0];
+	spi_message_add_tail(x, m);
+
+	lcd->lcd_dev = lcd_device_register("tdo24m", &spi->dev,
+					lcd, &tdo24m_ops);
+	if (IS_ERR(lcd->lcd_dev)) {
+		err = PTR_ERR(lcd->lcd_dev);
+		goto out_free;
+	}
+
+	dev_set_drvdata(&spi->dev, lcd);
+	err = tdo24m_power(lcd, FB_BLANK_UNBLANK);
+	if (err)
+		goto out_unregister;
+
+	return 0;
+
+out_unregister:
+	lcd_device_unregister(lcd->lcd_dev);
+out_free:
+	kfree(lcd->buf);
+	kfree(lcd);
+	return err;
+}
+
+static int __devexit tdo24m_remove(struct spi_device *spi)
+{
+	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+
+	tdo24m_power(lcd, FB_BLANK_POWERDOWN);
+	lcd_device_unregister(lcd->lcd_dev);
+	kfree(lcd->buf);
+	kfree(lcd);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int tdo24m_suspend(struct spi_device *spi, pm_message_t state)
+{
+	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+
+	return tdo24m_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static int tdo24m_resume(struct spi_device *spi)
+{
+	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+
+	return tdo24m_power(lcd, FB_BLANK_UNBLANK);
+}
+#else
+#define tdo24m_suspend	NULL
+#define tdo24m_resume	NULL
+#endif
+
+/* Power down all displays on reboot, poweroff or halt */
+static void tdo24m_shutdown(struct spi_device *spi)
+{
+	struct tdo24m *lcd = dev_get_drvdata(&spi->dev);
+
+	tdo24m_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver tdo24m_driver = {
+	.driver = {
+		.name		= "tdo24m",
+		.owner		= THIS_MODULE,
+	},
+	.probe		= tdo24m_probe,
+	.remove		= __devexit_p(tdo24m_remove),
+	.shutdown	= tdo24m_shutdown,
+	.suspend	= tdo24m_suspend,
+	.resume		= tdo24m_resume,
+};
+
+static int __init tdo24m_init(void)
+{
+	return spi_register_driver(&tdo24m_driver);
+}
+module_init(tdo24m_init);
+
+static void __exit tdo24m_exit(void)
+{
+	spi_unregister_driver(&tdo24m_driver);
+}
+module_exit(tdo24m_exit);
+
+MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>");
+MODULE_DESCRIPTION("Driver for Toppoly TDO24M LCD Panel");
+MODULE_LICENSE("GPL");