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-rw-r--r--drivers/video/backlight/Kconfig45
-rw-r--r--drivers/video/backlight/Makefile8
-rw-r--r--drivers/video/backlight/atmel-pwm-bl.c244
-rw-r--r--drivers/video/backlight/backlight.c1
-rw-r--r--drivers/video/backlight/ili9320.c330
-rw-r--r--drivers/video/backlight/ili9320.h80
-rw-r--r--drivers/video/backlight/lcd.c2
-rw-r--r--drivers/video/backlight/mbp_nvidia_bl.c116
-rw-r--r--drivers/video/backlight/platform_lcd.c172
-rw-r--r--drivers/video/backlight/vgg2432a4.c284
10 files changed, 1280 insertions, 2 deletions
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 30bf7f2f163..452b770d8cc 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -36,6 +36,30 @@ config LCD_LTV350QV
The LTV350QV panel is present on all ATSTK1000 boards.
+config LCD_ILI9320
+ tristate
+ depends on LCD_CLASS_DEVICE && BACKLIGHT_LCD_SUPPORT
+ default n
+ help
+ If you have a panel based on the ILI9320 controller chip
+ then say y to include a power driver for it.
+
+config LCD_VGG2432A4
+ tristate "VGG2432A4 LCM device support"
+ depends on BACKLIGHT_LCD_SUPPORT && LCD_CLASS_DEVICE && SPI_MASTER
+ select LCD_ILI9320
+ default n
+ help
+ If you have a VGG2432A4 panel based on the ILI9320 controller chip
+ then say y to include a power driver for it.
+
+config LCD_PLATFORM
+ tristate "Platform LCD controls"
+ depends on LCD_CLASS_DEVICE
+ help
+ This driver provides a platform-device registered LCD power
+ control interface.
+
#
# Backlight
#
@@ -63,6 +87,18 @@ config BACKLIGHT_ATMEL_LCDC
If in doubt, it's safe to enable this option; it doesn't kick
in unless the board's description says it's wired that way.
+config BACKLIGHT_ATMEL_PWM
+ tristate "Atmel PWM backlight control"
+ depends on BACKLIGHT_CLASS_DEVICE && ATMEL_PWM
+ default n
+ help
+ Say Y here if you want to use the PWM peripheral in Atmel AT91 and
+ AVR32 devices. This driver will need additional platform data to know
+ which PWM instance to use and how to configure it.
+
+ To compile this driver as a module, choose M here: the module will be
+ called atmel-pwm-bl.
+
config BACKLIGHT_CORGI
tristate "Generic (aka Sharp Corgi) Backlight Driver"
depends on BACKLIGHT_CLASS_DEVICE
@@ -119,3 +155,12 @@ config BACKLIGHT_PWM
help
If you have a LCD backlight adjustable by PWM, say Y to enable
this driver.
+
+config BACKLIGHT_MBP_NVIDIA
+ tristate "MacBook Pro Nvidia Backlight Driver"
+ depends on BACKLIGHT_CLASS_DEVICE && X86
+ default n
+ help
+ If you have an Apple Macbook Pro with Nvidia graphics hardware say Y
+ to enable a driver for its backlight
+
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index b51a7cd1250..b405aace803 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -1,9 +1,13 @@
# Backlight & LCD drivers
obj-$(CONFIG_LCD_CLASS_DEVICE) += lcd.o
-obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.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-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
+obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
@@ -11,3 +15,5 @@ obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
+obj-$(CONFIG_BACKLIGHT_MBP_NVIDIA) += mbp_nvidia_bl.o
+
diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c
new file mode 100644
index 00000000000..505c0823a10
--- /dev/null
+++ b/drivers/video/backlight/atmel-pwm-bl.c
@@ -0,0 +1,244 @@
+/*
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * Backlight driver using Atmel PWM peripheral.
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/backlight.h>
+#include <linux/atmel_pwm.h>
+#include <linux/atmel-pwm-bl.h>
+
+struct atmel_pwm_bl {
+ const struct atmel_pwm_bl_platform_data *pdata;
+ struct backlight_device *bldev;
+ struct platform_device *pdev;
+ struct pwm_channel pwmc;
+ int gpio_on;
+};
+
+static int atmel_pwm_bl_set_intensity(struct backlight_device *bd)
+{
+ struct atmel_pwm_bl *pwmbl = bl_get_data(bd);
+ int intensity = bd->props.brightness;
+ int pwm_duty;
+
+ if (bd->props.power != FB_BLANK_UNBLANK)
+ intensity = 0;
+ if (bd->props.fb_blank != FB_BLANK_UNBLANK)
+ intensity = 0;
+
+ if (pwmbl->pdata->pwm_active_low)
+ pwm_duty = pwmbl->pdata->pwm_duty_min + intensity;
+ else
+ pwm_duty = pwmbl->pdata->pwm_duty_max - intensity;
+
+ if (pwm_duty > pwmbl->pdata->pwm_duty_max)
+ pwm_duty = pwmbl->pdata->pwm_duty_max;
+ if (pwm_duty < pwmbl->pdata->pwm_duty_min)
+ pwm_duty = pwmbl->pdata->pwm_duty_min;
+
+ if (!intensity) {
+ if (pwmbl->gpio_on != -1) {
+ gpio_set_value(pwmbl->gpio_on,
+ 0 ^ pwmbl->pdata->on_active_low);
+ }
+ pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty);
+ pwm_channel_disable(&pwmbl->pwmc);
+ } else {
+ pwm_channel_enable(&pwmbl->pwmc);
+ pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty);
+ if (pwmbl->gpio_on != -1) {
+ gpio_set_value(pwmbl->gpio_on,
+ 1 ^ pwmbl->pdata->on_active_low);
+ }
+ }
+
+ return 0;
+}
+
+static int atmel_pwm_bl_get_intensity(struct backlight_device *bd)
+{
+ struct atmel_pwm_bl *pwmbl = bl_get_data(bd);
+ u8 intensity;
+
+ if (pwmbl->pdata->pwm_active_low) {
+ intensity = pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY) -
+ pwmbl->pdata->pwm_duty_min;
+ } else {
+ intensity = pwmbl->pdata->pwm_duty_max -
+ pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY);
+ }
+
+ return intensity;
+}
+
+static int atmel_pwm_bl_init_pwm(struct atmel_pwm_bl *pwmbl)
+{
+ unsigned long pwm_rate = pwmbl->pwmc.mck;
+ unsigned long prescale = DIV_ROUND_UP(pwm_rate,
+ (pwmbl->pdata->pwm_frequency *
+ pwmbl->pdata->pwm_compare_max)) - 1;
+
+ /*
+ * Prescale must be power of two and maximum 0xf in size because of
+ * hardware limit. PWM speed will be:
+ * PWM module clock speed / (2 ^ prescale).
+ */
+ prescale = fls(prescale);
+ if (prescale > 0xf)
+ prescale = 0xf;
+
+ pwm_channel_writel(&pwmbl->pwmc, PWM_CMR, prescale);
+ pwm_channel_writel(&pwmbl->pwmc, PWM_CDTY,
+ pwmbl->pdata->pwm_duty_min +
+ pwmbl->bldev->props.brightness);
+ pwm_channel_writel(&pwmbl->pwmc, PWM_CPRD,
+ pwmbl->pdata->pwm_compare_max);
+
+ dev_info(&pwmbl->pdev->dev, "Atmel PWM backlight driver "
+ "(%lu Hz)\n", pwmbl->pwmc.mck /
+ pwmbl->pdata->pwm_compare_max /
+ (1 << prescale));
+
+ return pwm_channel_enable(&pwmbl->pwmc);
+}
+
+static struct backlight_ops atmel_pwm_bl_ops = {
+ .get_brightness = atmel_pwm_bl_get_intensity,
+ .update_status = atmel_pwm_bl_set_intensity,
+};
+
+static int atmel_pwm_bl_probe(struct platform_device *pdev)
+{
+ const struct atmel_pwm_bl_platform_data *pdata;
+ struct backlight_device *bldev;
+ struct atmel_pwm_bl *pwmbl;
+ int retval;
+
+ pwmbl = kzalloc(sizeof(struct atmel_pwm_bl), GFP_KERNEL);
+ if (!pwmbl)
+ return -ENOMEM;
+
+ pwmbl->pdev = pdev;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ retval = -ENODEV;
+ goto err_free_mem;
+ }
+
+ if (pdata->pwm_compare_max < pdata->pwm_duty_max ||
+ pdata->pwm_duty_min > pdata->pwm_duty_max ||
+ pdata->pwm_frequency == 0) {
+ retval = -EINVAL;
+ goto err_free_mem;
+ }
+
+ pwmbl->pdata = pdata;
+ pwmbl->gpio_on = pdata->gpio_on;
+
+ retval = pwm_channel_alloc(pdata->pwm_channel, &pwmbl->pwmc);
+ if (retval)
+ goto err_free_mem;
+
+ if (pwmbl->gpio_on != -1) {
+ retval = gpio_request(pwmbl->gpio_on, "gpio_atmel_pwm_bl");
+ if (retval) {
+ pwmbl->gpio_on = -1;
+ goto err_free_pwm;
+ }
+
+ /* Turn display off by defatult. */
+ retval = gpio_direction_output(pwmbl->gpio_on,
+ 0 ^ pdata->on_active_low);
+ if (retval)
+ goto err_free_gpio;
+ }
+
+ bldev = backlight_device_register("atmel-pwm-bl",
+ &pdev->dev, pwmbl, &atmel_pwm_bl_ops);
+ if (IS_ERR(bldev)) {
+ retval = PTR_ERR(bldev);
+ goto err_free_gpio;
+ }
+
+ pwmbl->bldev = bldev;
+
+ platform_set_drvdata(pdev, pwmbl);
+
+ /* Power up the backlight by default at middle intesity. */
+ bldev->props.power = FB_BLANK_UNBLANK;
+ bldev->props.max_brightness = pdata->pwm_duty_max - pdata->pwm_duty_min;
+ bldev->props.brightness = bldev->props.max_brightness / 2;
+
+ retval = atmel_pwm_bl_init_pwm(pwmbl);
+ if (retval)
+ goto err_free_bl_dev;
+
+ atmel_pwm_bl_set_intensity(bldev);
+
+ return 0;
+
+err_free_bl_dev:
+ platform_set_drvdata(pdev, NULL);
+ backlight_device_unregister(bldev);
+err_free_gpio:
+ if (pwmbl->gpio_on != -1)
+ gpio_free(pwmbl->gpio_on);
+err_free_pwm:
+ pwm_channel_free(&pwmbl->pwmc);
+err_free_mem:
+ kfree(pwmbl);
+ return retval;
+}
+
+static int __exit atmel_pwm_bl_remove(struct platform_device *pdev)
+{
+ struct atmel_pwm_bl *pwmbl = platform_get_drvdata(pdev);
+
+ if (pwmbl->gpio_on != -1) {
+ gpio_set_value(pwmbl->gpio_on, 0);
+ gpio_free(pwmbl->gpio_on);
+ }
+ pwm_channel_disable(&pwmbl->pwmc);
+ pwm_channel_free(&pwmbl->pwmc);
+ backlight_device_unregister(pwmbl->bldev);
+ platform_set_drvdata(pdev, NULL);
+ kfree(pwmbl);
+
+ return 0;
+}
+
+static struct platform_driver atmel_pwm_bl_driver = {
+ .driver = {
+ .name = "atmel-pwm-bl",
+ },
+ /* REVISIT add suspend() and resume() */
+ .remove = __exit_p(atmel_pwm_bl_remove),
+};
+
+static int __init atmel_pwm_bl_init(void)
+{
+ return platform_driver_probe(&atmel_pwm_bl_driver, atmel_pwm_bl_probe);
+}
+module_init(atmel_pwm_bl_init);
+
+static void __exit atmel_pwm_bl_exit(void)
+{
+ platform_driver_unregister(&atmel_pwm_bl_driver);
+}
+module_exit(atmel_pwm_bl_exit);
+
+MODULE_AUTHOR("Hans-Christian egtvedt <hans-christian.egtvedt@atmel.com>");
+MODULE_DESCRIPTION("Atmel PWM backlight driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 39394757679..fab0bc874b5 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -191,6 +191,7 @@ static struct device_attribute bl_device_attributes[] = {
* backlight_device class.
* @name: the name of the new object(must be the same as the name of the
* respective framebuffer device).
+ * @parent: a pointer to the parent device
* @devdata: an optional pointer to be stored for private driver use. The
* methods may retrieve it by using bl_get_data(bd).
* @ops: the backlight operations structure.
diff --git a/drivers/video/backlight/ili9320.c b/drivers/video/backlight/ili9320.c
new file mode 100644
index 00000000000..ba89b41b639
--- /dev/null
+++ b/drivers/video/backlight/ili9320.c
@@ -0,0 +1,330 @@
+/* drivers/video/backlight/ili9320.c
+ *
+ * ILI9320 LCD controller driver core.
+ *
+ * Copyright 2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * 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/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+
+#include <linux/spi/spi.h>
+
+#include <video/ili9320.h>
+
+#include "ili9320.h"
+
+
+static inline int ili9320_write_spi(struct ili9320 *ili,
+ unsigned int reg,
+ unsigned int value)
+{
+ struct ili9320_spi *spi = &ili->access.spi;
+ unsigned char *addr = spi->buffer_addr;
+ unsigned char *data = spi->buffer_data;
+
+ /* spi message consits of:
+ * first byte: ID and operation
+ */
+
+ addr[0] = spi->id | ILI9320_SPI_INDEX | ILI9320_SPI_WRITE;
+ addr[1] = reg >> 8;
+ addr[2] = reg;
+
+ /* second message is the data to transfer */
+
+ data[0] = spi->id | ILI9320_SPI_DATA | ILI9320_SPI_WRITE;
+ data[1] = value >> 8;
+ data[2] = value;
+
+ return spi_sync(spi->dev, &spi->message);
+}
+
+int ili9320_write(struct ili9320 *ili, unsigned int reg, unsigned int value)
+{
+ dev_dbg(ili->dev, "write: reg=%02x, val=%04x\n", reg, value);
+ return ili->write(ili, reg, value);
+}
+
+EXPORT_SYMBOL_GPL(ili9320_write);
+
+int ili9320_write_regs(struct ili9320 *ili,
+ struct ili9320_reg *values,
+ int nr_values)
+{
+ int index;
+ int ret;
+
+ for (index = 0; index < nr_values; index++, values++) {
+ ret = ili9320_write(ili, values->address, values->value);
+ if (ret != 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_write_regs);
+
+static void ili9320_reset(struct ili9320 *lcd)
+{
+ struct ili9320_platdata *cfg = lcd->platdata;
+
+ cfg->reset(1);
+ mdelay(50);
+
+ cfg->reset(0);
+ mdelay(50);
+
+ cfg->reset(1);
+ mdelay(100);
+}
+
+static inline int ili9320_init_chip(struct ili9320 *lcd)
+{
+ int ret;
+
+ ili9320_reset(lcd);
+
+ ret = lcd->client->init(lcd, lcd->platdata);
+ if (ret != 0) {
+ dev_err(lcd->dev, "failed to initialise display\n");
+ return ret;
+ }
+
+ lcd->initialised = 1;
+ return 0;
+}
+
+static inline int ili9320_power_on(struct ili9320 *lcd)
+{
+ if (!lcd->initialised)
+ ili9320_init_chip(lcd);
+
+ lcd->display1 |= (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);
+ ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
+
+ return 0;
+}
+
+static inline int ili9320_power_off(struct ili9320 *lcd)
+{
+ lcd->display1 &= ~(ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_BASEE);
+ ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
+
+ return 0;
+}
+
+#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL)
+
+static int ili9320_power(struct ili9320 *lcd, int power)
+{
+ int ret = 0;
+
+ dev_dbg(lcd->dev, "power %d => %d\n", lcd->power, power);
+
+ if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+ ret = ili9320_power_on(lcd);
+ else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+ ret = ili9320_power_off(lcd);
+
+ if (ret == 0)
+ lcd->power = power;
+ else
+ dev_warn(lcd->dev, "failed to set power mode %d\n", power);
+
+ return ret;
+}
+
+static inline struct ili9320 *to_our_lcd(struct lcd_device *lcd)
+{
+ return lcd_get_data(lcd);
+}
+
+static int ili9320_set_power(struct lcd_device *ld, int power)
+{
+ struct ili9320 *lcd = to_our_lcd(ld);
+
+ return ili9320_power(lcd, power);
+}
+
+static int ili9320_get_power(struct lcd_device *ld)
+{
+ struct ili9320 *lcd = to_our_lcd(ld);
+
+ return lcd->power;
+}
+
+static struct lcd_ops ili9320_ops = {
+ .get_power = ili9320_get_power,
+ .set_power = ili9320_set_power,
+};
+
+static void __devinit ili9320_setup_spi(struct ili9320 *ili,
+ struct spi_device *dev)
+{
+ struct ili9320_spi *spi = &ili->access.spi;
+
+ ili->write = ili9320_write_spi;
+ spi->dev = dev;
+
+ /* fill the two messages we are going to use to send the data
+ * with, the first the address followed by the data. The datasheet
+ * says they should be done as two distinct cycles of the SPI CS line.
+ */
+
+ spi->xfer[0].tx_buf = spi->buffer_addr;
+ spi->xfer[1].tx_buf = spi->buffer_data;
+ spi->xfer[0].len = 3;
+ spi->xfer[1].len = 3;
+ spi->xfer[0].bits_per_word = 8;
+ spi->xfer[1].bits_per_word = 8;
+ spi->xfer[0].cs_change = 1;
+
+ spi_message_init(&spi->message);
+ spi_message_add_tail(&spi->xfer[0], &spi->message);
+ spi_message_add_tail(&spi->xfer[1], &spi->message);
+}
+
+int __devinit ili9320_probe_spi(struct spi_device *spi,
+ struct ili9320_client *client)
+{
+ struct ili9320_platdata *cfg = spi->dev.platform_data;
+ struct device *dev = &spi->dev;
+ struct ili9320 *ili;
+ struct lcd_device *lcd;
+ int ret = 0;
+
+ /* verify we where given some information */
+
+ if (cfg == NULL) {
+ dev_err(dev, "no platform data supplied\n");
+ return -EINVAL;
+ }
+
+ if (cfg->hsize <= 0 || cfg->vsize <= 0 || cfg->reset == NULL) {
+ dev_err(dev, "invalid platform data supplied\n");
+ return -EINVAL;
+ }
+
+ /* allocate and initialse our state */
+
+ ili = kzalloc(sizeof(struct ili9320), GFP_KERNEL);
+ if (ili == NULL) {
+ dev_err(dev, "no memory for device\n");
+ return -ENOMEM;
+ }
+
+ ili->access.spi.id = ILI9320_SPI_IDCODE | ILI9320_SPI_ID(1);
+
+ ili->dev = dev;
+ ili->client = client;
+ ili->power = FB_BLANK_POWERDOWN;
+ ili->platdata = cfg;
+
+ dev_set_drvdata(&spi->dev, ili);
+
+ ili9320_setup_spi(ili, spi);
+
+ lcd = lcd_device_register("ili9320", dev, ili, &ili9320_ops);
+ if (IS_ERR(lcd)) {
+ dev_err(dev, "failed to register lcd device\n");
+ ret = PTR_ERR(lcd);
+ goto err_free;
+ }
+
+ ili->lcd = lcd;
+
+ dev_info(dev, "initialising %s\n", client->name);
+
+ ret = ili9320_power(ili, FB_BLANK_UNBLANK);
+ if (ret != 0) {
+ dev_err(dev, "failed to set lcd power state\n");
+ goto err_unregister;
+ }
+
+ return 0;
+
+ err_unregister:
+ lcd_device_unregister(lcd);
+
+ err_free:
+ kfree(ili);
+
+ return ret;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_probe_spi);
+
+int __devexit ili9320_remove(struct ili9320 *ili)
+{
+ ili9320_power(ili, FB_BLANK_POWERDOWN);
+
+ lcd_device_unregister(ili->lcd);
+ kfree(ili);
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_remove);
+
+#ifdef CONFIG_PM
+int ili9320_suspend(struct ili9320 *lcd, pm_message_t state)
+{
+ int ret;
+
+ dev_dbg(lcd->dev, "%s: event %d\n", __func__, state.event);
+
+ if (state.event == PM_EVENT_SUSPEND) {
+ ret = ili9320_power(lcd, FB_BLANK_POWERDOWN);
+
+ if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {
+ ili9320_write(lcd, ILI9320_POWER1, lcd->power1 |
+ ILI9320_POWER1_SLP |
+ ILI9320_POWER1_DSTB);
+ lcd->initialised = 0;
+ }
+
+ return ret;
+ }
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(ili9320_suspend);
+
+int ili9320_resume(struct ili9320 *lcd)
+{
+ dev_info(lcd->dev, "resuming from power state %d\n", lcd->power);
+
+ if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) {
+ ili9320_write(lcd, ILI9320_POWER1, 0x00);
+ }
+
+ return ili9320_power(lcd, FB_BLANK_UNBLANK);
+}
+
+EXPORT_SYMBOL_GPL(ili9320_resume);
+#endif
+
+/* Power down all displays on reboot, poweroff or halt */
+void ili9320_shutdown(struct ili9320 *lcd)
+{
+ ili9320_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+EXPORT_SYMBOL_GPL(ili9320_shutdown);
+
+MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
+MODULE_DESCRIPTION("ILI9320 LCD Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/video/backlight/ili9320.h b/drivers/video/backlight/ili9320.h
new file mode 100644
index 00000000000..e388eca7cac
--- /dev/null
+++ b/drivers/video/backlight/ili9320.h
@@ -0,0 +1,80 @@
+/* drivers/video/backlight/ili9320.h
+ *
+ * ILI9320 LCD controller driver core.
+ *
+ * Copyright 2007 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * http://armlinux.simtec.co.uk/
+ *
+ * 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.
+*/
+
+/* Holder for register and value pairs. */
+struct ili9320_reg {
+ unsigned short address;
+ unsigned short value;
+};
+
+struct ili9320;
+
+struct ili9320_client {
+ const char *name;
+ int (*init)(struct ili9320 *ili, struct ili9320_platdata *cfg);
+
+};
+/* Device attached via an SPI bus. */
+struct ili9320_spi {
+ struct spi_device *dev;
+ struct spi_message message;
+ struct spi_transfer xfer[2];
+
+ unsigned char id;
+ unsigned char buffer_addr[4];
+ unsigned char buffer_data[4];
+};
+
+/* ILI9320 device state. */
+struct ili9320 {
+ union {
+ struct ili9320_spi spi; /* SPI attachged device. */
+ } access; /* Register access method. */
+
+ struct device *dev;
+ struct lcd_device *lcd; /* LCD device we created. */
+ struct ili9320_client *client;
+ struct ili9320_platdata *platdata;
+
+ int power; /* current power state. */
+ int initialised;
+
+ unsigned short display1;
+ unsigned short power1;
+
+ int (*write)(struct ili9320 *ili, unsigned int reg, unsigned int val);
+};
+
+
+/* ILI9320 register access routines */
+
+extern int ili9320_write(struct ili9320 *ili,
+ unsigned int reg, unsigned int value);
+
+extern int ili9320_write_regs(struct ili9320 *ili,
+ struct ili9320_reg *values,
+ int nr_values);
+
+/* Device probe */
+
+extern int ili9320_probe_spi(struct spi_device *spi,
+ struct ili9320_client *cli);
+
+extern int ili9320_remove(struct ili9320 *lcd);
+extern void ili9320_shutdown(struct ili9320 *lcd);
+
+/* PM */
+
+extern int ili9320_suspend(struct ili9320 *lcd, pm_message_t state);
+extern int ili9320_resume(struct ili9320 *lcd);
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 299fd318dd4..b15b2b84a6f 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -33,7 +33,7 @@ static int fb_notifier_callback(struct notifier_block *self,
ld = container_of(self, struct lcd_device, fb_notif);
mutex_lock(&ld->ops_lock);
if (ld->ops)
- if (!ld->ops->check_fb || ld->ops->check_fb(evdata->info))
+ if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info))
ld->ops->set_power(ld, *(int *)evdata->data);
mutex_unlock(&ld->ops_lock);
return 0;
diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c
new file mode 100644
index 00000000000..385cba40ea8
--- /dev/null
+++ b/drivers/video/backlight/mbp_nvidia_bl.c
@@ -0,0 +1,116 @@
+/*
+ * Backlight Driver for Nvidia 8600 in Macbook Pro
+ *
+ * Copyright (c) Red Hat <mjg@redhat.com>
+ * Based on code from Pommed:
+ * Copyright (C) 2006 Nicolas Boichat <nicolas @boichat.ch>
+ * Copyright (C) 2006 Felipe Alfaro Solana <felipe_alfaro @linuxmail.org>
+ * Copyright (C) 2007 Julien BLACHE <jb@jblache.org>
+ *
+ * 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.
+ *
+ * This driver triggers SMIs which cause the firmware to change the
+ * backlight brightness. This is icky in many ways, but it's impractical to
+ * get at the firmware code in order to figure out what it's actually doing.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/dmi.h>
+#include <linux/io.h>
+
+static struct backlight_device *mbp_backlight_device;
+
+static struct dmi_system_id __initdata mbp_device_table[] = {
+ {
+ .ident = "3,1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
+ },
+ },
+ {
+ .ident = "3,2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,2"),
+ },
+ },
+ {
+ .ident = "4,1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4,1"),
+ },
+ },
+ { }
+};
+
+static int mbp_send_intensity(struct backlight_device *bd)
+{
+ int intensity = bd->props.brightness;
+
+ outb(0x04 | (intensity << 4), 0xb3);
+ outb(0xbf, 0xb2);
+
+ return 0;
+}
+
+static int mbp_get_intensity(struct backlight_device *bd)
+{
+ outb(0x03, 0xb3);
+ outb(0xbf, 0xb2);
+ return inb(0xb3) >> 4;
+}
+
+static struct backlight_ops mbp_ops = {
+ .get_brightness = mbp_get_intensity,
+ .update_status = mbp_send_intensity,
+};
+
+static int __init mbp_init(void)
+{
+ if (!dmi_check_system(mbp_device_table))
+ return -ENODEV;
+
+ if (!request_region(0xb2, 2, "Macbook Pro backlight"))
+ return -ENXIO;
+
+ mbp_backlight_device = backlight_device_register("mbp_backlight",
+ NULL, NULL,
+ &mbp_ops);
+ if (IS_ERR(mbp_backlight_device)) {
+ release_region(0xb2, 2);
+ return PTR_ERR(mbp_backlight_device);
+ }
+
+ mbp_backlight_device->props.max_brightness = 15;
+ mbp_backlight_device->props.brightness =
+ mbp_get_intensity(mbp_backlight_device);
+ backlight_update_status(mbp_backlight_device);
+
+ return 0;
+}
+
+static void __exit mbp_exit(void)
+{
+ backlight_device_unregister(mbp_backlight_device);
+
+ release_region(0xb2, 2);
+}
+
+module_init(mbp_init);
+module_exit(mbp_exit);
+
+MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_DESCRIPTION("Nvidia-based Macbook Pro Backlight Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("svnAppleInc.:pnMacBookPro3,1");
+MODULE_ALIAS("svnAppleInc.:pnMacBookPro3,2");
+MODULE_ALIAS("svnAppleInc.:pnMacBookPro4,1");
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c
new file mode 100644
index 00000000000..72d44dbfce8
--- /dev/null
+++ b/drivers/video/backlight/platform_lcd.c
@@ -0,0 +1,172 @@
+/* drivers/video/backlight/platform_lcd.c
+ *
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * Generic platform-device LCD power control interface.
+ *
+ * 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/platform_device.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/lcd.h>
+
+#include <video/platform_lcd.h>
+
+struct platform_lcd {
+ struct device *us;
+ struct lcd_device *lcd;
+ struct plat_lcd_data *pdata;
+
+ unsigned int power;
+ unsigned int suspended : 1;
+};
+
+static inline struct platform_lcd *to_our_lcd(struct lcd_device *lcd)
+{
+ return lcd_get_data(lcd);
+}
+
+static int platform_lcd_get_power(struct lcd_device *lcd)
+{
+ struct platform_lcd *plcd = to_our_lcd(lcd);
+
+ return plcd->power;
+}
+
+static int platform_lcd_set_power(struct lcd_device *lcd, int power)
+{
+ struct platform_lcd *plcd = to_our_lcd(lcd);
+ int lcd_power = 1;
+
+ if (power == FB_BLANK_POWERDOWN || plcd->suspended)
+ lcd_power = 0;
+
+ plcd->pdata->set_power(plcd->pdata, lcd_power);
+ plcd->power = power;
+
+ return 0;
+}
+
+static int platform_lcd_match(struct lcd_device *lcd, struct fb_info *info)
+{
+ struct platform_lcd *plcd = to_our_lcd(lcd);
+ struct plat_lcd_data *pdata = plcd->pdata;
+
+ if (pdata->match_fb)
+ return pdata->match_fb(pdata, info);
+
+ return plcd->us->parent == info->device;
+}
+
+static struct lcd_ops platform_lcd_ops = {
+ .get_power = platform_lcd_get_power,
+ .set_power = platform_lcd_set_power,
+ .check_fb = platform_lcd_match,
+};
+
+static int __devinit platform_lcd_probe(struct platform_device *pdev)
+{
+ struct plat_lcd_data *pdata;
+ struct platform_lcd *plcd;
+ struct device *dev = &pdev->dev;
+ int err;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(dev, "no platform data supplied\n");
+ return -EINVAL;
+ }
+
+ plcd = kzalloc(sizeof(struct platform_lcd), GFP_KERNEL);
+ if (!plcd) {
+ dev_err(dev, "no memory for state\n");
+ return -ENOMEM;
+ }
+
+ plcd->us = dev;
+ plcd->pdata = pdata;
+ plcd->lcd = lcd_device_register("platform-lcd", dev,
+ plcd, &platform_lcd_ops);
+ if (IS_ERR(plcd->lcd)) {
+ dev_err(dev, "cannot register lcd device\n");
+ err = PTR_ERR(plcd->lcd);
+ goto err_mem;
+ }
+
+ platform_set_drvdata(pdev, plcd);
+ return 0;
+
+ err_mem:
+ kfree(plcd);
+ return err;
+}
+
+static int __devexit platform_lcd_remove(struct platform_device *pdev)
+{
+ struct platform_lcd *plcd = platform_get_drvdata(pdev);
+
+ lcd_device_unregister(plcd->lcd);
+ kfree(plcd);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int platform_lcd_suspend(struct platform_device *pdev, pm_message_t st)
+{
+ struct platform_lcd *plcd = platform_get_drvdata(pdev);
+
+ plcd->suspended = 1;
+ platform_lcd_set_power(plcd->lcd, plcd->power);
+
+ return 0;
+}
+
+static int platform_lcd_resume(struct platform_device *pdev)
+{
+ struct platform_lcd *plcd = platform_get_drvdata(pdev);
+
+ plcd->suspended = 0;
+ platform_lcd_set_power(plcd->lcd, plcd->power);
+
+ return 0;
+}
+#else
+#define platform_lcd_suspend NULL
+#define platform_lcd_resume NULL
+#endif
+
+static struct platform_driver platform_lcd_driver = {
+ .driver = {
+ .name = "platform-lcd",
+ .owner = THIS_MODULE,
+ },
+ .probe = platform_lcd_probe,
+ .remove = __devexit_p(platform_lcd_remove),
+ .suspend = platform_lcd_suspend,
+ .resume = platform_lcd_resume,
+};
+
+static int __init platform_lcd_init(void)
+{
+ return platform_driver_register(&platform_lcd_driver);
+}
+
+static void __exit platform_lcd_cleanup(void)
+{
+ platform_driver_unregister(&platform_lcd_driver);
+}
+
+module_init(platform_lcd_init);
+module_exit(platform_lcd_cleanup);
+
+MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:platform-lcd");
diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c
new file mode 100644
index 00000000000..593c7687d54
--- /dev/null
+++ b/drivers/video/backlight/vgg2432a4.c
@@ -0,0 +1,284 @@
+/* drivers/video/backlight/vgg2432a4.c
+ *
+ * VGG2432A4 (ILI9320) LCD controller driver.
+ *
+ * Copyright 2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * 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/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+
+#include <linux/spi/spi.h>
+
+#include <video/ili9320.h>
+
+#include "ili9320.h"
+
+/* Device initialisation sequences */
+
+static struct ili9320_reg vgg_init1[] = {
+ {
+ .address = ILI9320_POWER1,
+ .value = ILI9320_POWER1_AP(0) | ILI9320_POWER1_BT(0),
+ }, {
+ .address = ILI9320_POWER2,
+ .value = (ILI9320_POWER2_VC(7) |
+ ILI9320_POWER2_DC0(0) | ILI9320_POWER2_DC1(0)),
+ }, {
+ .address = ILI9320_POWER3,
+ .value = ILI9320_POWER3_VRH(0),
+ }, {
+ .address = ILI9320_POWER4,
+ .value = ILI9320_POWER4_VREOUT(0),
+ },
+};
+
+static struct ili9320_reg vgg_init2[] = {
+ {
+ .address = ILI9320_POWER1,
+ .value = (ILI9320_POWER1_AP(3) | ILI9320_POWER1_APE |
+ ILI9320_POWER1_BT(7) | ILI9320_POWER1_SAP),
+ }, {
+ .address = ILI9320_POWER2,
+ .value = ILI9320_POWER2_VC(7) | ILI9320_POWER2_DC0(3),
+ }
+};
+
+static struct ili9320_reg vgg_gamma[] = {
+ {
+ .address = ILI9320_GAMMA1,
+ .value = 0x0000,
+ }, {
+ .address = ILI9320_GAMMA2,
+ .value = 0x0505,
+ }, {
+ .address = ILI9320_GAMMA3,
+ .value = 0x0004,
+ }, {
+ .address = ILI9320_GAMMA4,
+ .value = 0x0006,
+ }, {
+ .address = ILI9320_GAMMA5,
+ .value = 0x0707,
+ }, {
+ .address = ILI9320_GAMMA6,
+ .value = 0x0105,
+ }, {
+ .address = ILI9320_GAMMA7,
+ .value = 0x0002,
+ }, {
+ .address = ILI9320_GAMMA8,
+ .value = 0x0707,
+ }, {
+ .address = ILI9320_GAMMA9,
+ .value = 0x0704,
+ }, {
+ .address = ILI9320_GAMMA10,
+ .value = 0x807,
+ }
+
+};
+
+static struct ili9320_reg vgg_init0[] = {
+ [0] = {
+ /* set direction and scan mode gate */
+ .address = ILI9320_DRIVER,
+ .value = ILI9320_DRIVER_SS,
+ }, {
+ .address = ILI9320_DRIVEWAVE,
+ .value = (ILI9320_DRIVEWAVE_MUSTSET |
+ ILI9320_DRIVEWAVE_EOR | ILI9320_DRIVEWAVE_BC),
+ }, {
+ .address = ILI9320_ENTRYMODE,
+ .value = ILI9320_ENTRYMODE_ID(3) | ILI9320_ENTRYMODE_BGR,
+ }, {
+ .address = ILI9320_RESIZING,
+ .value = 0x0,
+ },
+};
+
+
+static int vgg2432a4_lcd_init(struct ili9320 *lcd,
+ struct ili9320_platdata *cfg)
+{
+ unsigned int addr;
+ int ret;
+
+ /* Set VCore before anything else (VGG243237-6UFLWA) */
+ ret = ili9320_write(lcd, 0x00e5, 0x8000);
+ if (ret)
+ goto err_initial;
+
+ /* Start the oscillator up before we can do anything else. */
+ ret = ili9320_write(lcd, ILI9320_OSCILATION, ILI9320_OSCILATION_OSC);
+ if (ret)
+ goto err_initial;
+
+ /* must wait at-lesat 10ms after starting */
+ mdelay(15);
+
+ ret = ili9320_write_regs(lcd, vgg_init0, ARRAY_SIZE(vgg_init0));
+ if (ret != 0)
+ goto err_initial;
+
+ ili9320_write(lcd, ILI9320_DISPLAY2, cfg->display2);
+ ili9320_write(lcd, ILI9320_DISPLAY3, cfg->display3);
+ ili9320_write(lcd, ILI9320_DISPLAY4, cfg->display4);
+
+ ili9320_write(lcd, ILI9320_RGB_IF1, cfg->rgb_if1);
+ ili9320_write(lcd, ILI9320_FRAMEMAKER, 0x0);
+ ili9320_write(lcd, ILI9320_RGB_IF2, ILI9320_RGBIF2_DPL);
+
+ ret = ili9320_write_regs(lcd, vgg_init1, ARRAY_SIZE(vgg_init1));
+ if (ret != 0)
+ goto err_vgg;
+
+ mdelay(300);
+
+ ret = ili9320_write_regs(lcd, vgg_init2, ARRAY_SIZE(vgg_init2));
+ if (ret != 0)
+ goto err_vgg2;
+
+ mdelay(100);
+
+ ili9320_write(lcd, ILI9320_POWER3, 0x13c);
+
+ mdelay(100);
+
+ ili9320_write(lcd, ILI9320_POWER4, 0x1c00);
+ ili9320_write(lcd, ILI9320_POWER7, 0x000e);
+
+ mdelay(100);
+
+ ili9320_write(lcd, ILI9320_GRAM_HORIZ_ADDR, 0x00);
+ ili9320_write(lcd, ILI9320_GRAM_VERT_ADD, 0x00);
+
+ ret = ili9320_write_regs(lcd, vgg_gamma, ARRAY_SIZE(vgg_gamma));
+ if (ret != 0)
+ goto err_vgg3;
+
+ ili9320_write(lcd, ILI9320_HORIZ_START, 0x0);
+ ili9320_write(lcd, ILI9320_HORIZ_END, cfg->hsize - 1);
+ ili9320_write(lcd, ILI9320_VERT_START, 0x0);
+ ili9320_write(lcd, ILI9320_VERT_END, cfg->vsize - 1);
+
+ ili9320_write(lcd, ILI9320_DRIVER2,
+ ILI9320_DRIVER2_NL(((cfg->vsize - 240) / 8) + 0x1D));
+
+ ili9320_write(lcd, ILI9320_BASE_IMAGE, 0x1);
+ ili9320_write(lcd, ILI9320_VERT_SCROLL, 0x00);
+
+ for (addr = ILI9320_PARTIAL1_POSITION; addr <= ILI9320_PARTIAL2_END;
+ addr++) {
+ ili9320_write(lcd, addr, 0x0);
+ }
+
+ ili9320_write(lcd, ILI9320_INTERFACE1, 0x10);
+ ili9320_write(lcd, ILI9320_INTERFACE2, cfg->interface2);
+ ili9320_write(lcd, ILI9320_INTERFACE3, cfg->interface3);
+ ili9320_write(lcd, ILI9320_INTERFACE4, cfg->interface4);
+ ili9320_write(lcd, ILI9320_INTERFACE5, cfg->interface5);
+ ili9320_write(lcd, ILI9320_INTERFACE6, cfg->interface6);
+
+ lcd->display1 = (ILI9320_DISPLAY1_D(3) | ILI9320_DISPLAY1_DTE |
+ ILI9320_DISPLAY1_GON | ILI9320_DISPLAY1_BASEE |
+ 0x40);
+
+ ili9320_write(lcd, ILI9320_DISPLAY1, lcd->display1);
+
+ return 0;
+
+ err_vgg3:
+ err_vgg2:
+ err_vgg:
+ err_initial:
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int vgg2432a4_suspend(struct spi_device *spi, pm_message_t state)
+{
+ return ili9320_suspend(dev_get_drvdata(&spi->dev), state);
+}
+
+static int vgg2432a4_resume(struct spi_device *spi)
+{
+ return ili9320_resume(dev_get_drvdata(&spi->dev));
+}
+#else
+#define vgg2432a4_suspend NULL
+#define vgg2432a4_resume NULL
+#endif
+
+static struct ili9320_client vgg2432a4_client = {
+ .name = "VGG2432A4",
+ .init = vgg2432a4_lcd_init,
+};
+
+/* Device probe */
+
+static int __devinit vgg2432a4_probe(struct spi_device *spi)
+{
+ int ret;
+
+ ret = ili9320_probe_spi(spi, &vgg2432a4_client);
+ if (ret != 0) {
+ dev_err(&spi->dev, "failed to initialise ili9320\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __devexit vgg2432a4_remove(struct spi_device *spi)
+{
+ return ili9320_remove(dev_get_drvdata(&spi->dev));
+}
+
+static void vgg2432a4_shutdown(struct spi_device *spi)
+{
+ ili9320_shutdown(dev_get_drvdata(&spi->dev));
+}
+
+static struct spi_driver vgg2432a4_driver = {
+ .driver = {
+ .name = "VGG2432A4",
+ .owner = THIS_MODULE,
+ },
+ .probe = vgg2432a4_probe,
+ .remove = __devexit_p(vgg2432a4_remove),
+ .shutdown = vgg2432a4_shutdown,
+ .suspend = vgg2432a4_suspend,
+ .resume = vgg2432a4_resume,
+};
+
+/* Device driver initialisation */
+
+static int __init vgg2432a4_init(void)
+{
+ return spi_register_driver(&vgg2432a4_driver);
+}
+
+static void __exit vgg2432a4_exit(void)
+{
+ spi_unregister_driver(&vgg2432a4_driver);
+}
+
+module_init(vgg2432a4_init);
+module_exit(vgg2432a4_exit);
+
+MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
+MODULE_DESCRIPTION("VGG2432A4 LCD Driver");
+MODULE_LICENSE("GPL v2");
+
+