Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
  backlight: Adds HP Jornada 700 series backlight driver
  backlight: Add HP Jornada 700 series LCD driver
  backlight: fix pwm_bl.c when multiple PWM backlights exist
  backlight: mbp_nvidia_bl - Add a debug switch
  backlight: Add support for MacBook 5, MacBook Air 2, and MacBook Pro 5

6 files changed, 491 insertions, 38 deletions

diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 72facb9eb7db..f9d19be05540 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -84,6 +84,15 @@ config LCD_TOSA
 	  If you have an Sharp SL-6000 Zaurus say Y to enable a driver
 	  for its LCD.
 
+config LCD_HP700
+	tristate "HP Jornada 700 series LCD Driver"
+	depends on LCD_CLASS_DEVICE
+	depends on SA1100_JORNADA720_SSP && !PREEMPT
+	default y
+	help
+	  If you have an HP Jornada 700 series handheld (710/720/728)
+	  say Y to enable LCD control driver.
+
 #
 # Backlight
 #
@@ -157,6 +166,15 @@ config BACKLIGHT_HP680
 	  If you have a HP Jornada 680, say y to enable the
 	  backlight driver.
 
+config BACKLIGHT_HP700
+	tristate "HP Jornada 700 series Backlight Driver"
+	depends on BACKLIGHT_CLASS_DEVICE
+	depends on SA1100_JORNADA720_SSP && !PREEMPT
+	default y
+	help
+	  If you have an HP Jornada 700 series,
+	  say Y to include backlight control driver.
+
 config BACKLIGHT_PROGEAR
 	tristate "Frontpath ProGear Backlight Driver"
 	depends on BACKLIGHT_CLASS_DEVICE && PCI && X86
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 63d759498165..4eb178c1d684 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -2,6 +2,7 @@
 
 obj-$(CONFIG_LCD_CLASS_DEVICE)     += lcd.o
 obj-$(CONFIG_LCD_CORGI)		   += corgi_lcd.o
+obj-$(CONFIG_LCD_HP700)		   += jornada720_lcd.o
 obj-$(CONFIG_LCD_LTV350QV)	   += ltv350qv.o
 obj-$(CONFIG_LCD_ILI9320)	   += ili9320.o
 obj-$(CONFIG_LCD_PLATFORM)	   += platform_lcd.o
@@ -12,6 +13,7 @@ obj-$(CONFIG_LCD_TOSA)		   += tosa_lcd.o
 obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
 obj-$(CONFIG_BACKLIGHT_ATMEL_PWM)    += atmel-pwm-bl.o
 obj-$(CONFIG_BACKLIGHT_GENERIC)	+= generic_bl.o
+obj-$(CONFIG_BACKLIGHT_HP700)	+= jornada720_bl.o
 obj-$(CONFIG_BACKLIGHT_HP680)	+= hp680_bl.o
 obj-$(CONFIG_BACKLIGHT_LOCOMO)	+= locomolcd.o
 obj-$(CONFIG_BACKLIGHT_OMAP1)	+= omap1_bl.o
diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c
new file mode 100644
index 000000000000..c3ebb6b41ce1
--- /dev/null
+++ b/drivers/video/backlight/jornada720_bl.c
@@ -0,0 +1,161 @@
+/*
+ *
+ * Backlight driver for HP Jornada 700 series (710/720/728)
+ * Copyright (C) 2006-2009 Kristoffer Ericson <kristoffer.ericson@gmail.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 or any later version as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/backlight.h>
+#include <linux/device.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <mach/jornada720.h>
+#include <mach/hardware.h>
+
+#include <video/s1d13xxxfb.h>
+
+#define BL_MAX_BRIGHT	255
+#define BL_DEF_BRIGHT	25
+
+static int jornada_bl_get_brightness(struct backlight_device *bd)
+{
+	int ret;
+
+	/* check if backlight is on */
+	if (!(PPSR & PPC_LDD1))
+		return 0;
+
+	jornada_ssp_start();
+
+	/* cmd should return txdummy */
+	ret = jornada_ssp_byte(GETBRIGHTNESS);
+
+	if (jornada_ssp_byte(GETBRIGHTNESS) != TXDUMMY) {
+		printk(KERN_ERR "bl : get brightness timeout\n");
+		jornada_ssp_end();
+		return -ETIMEDOUT;
+	} else /* exchange txdummy for value */
+		ret = jornada_ssp_byte(TXDUMMY);
+
+	jornada_ssp_end();
+
+	return (BL_MAX_BRIGHT - ret);
+}
+
+static int jornada_bl_update_status(struct backlight_device *bd)
+{
+	int ret = 0;
+
+	jornada_ssp_start();
+
+	/* If backlight is off then really turn it off */
+	if ((bd->props.power != FB_BLANK_UNBLANK) || (bd->props.fb_blank != FB_BLANK_UNBLANK)) {
+		ret = jornada_ssp_byte(BRIGHTNESSOFF);
+		if (ret != TXDUMMY) {
+			printk(KERN_INFO "bl : brightness off timeout\n");
+			/* turn off backlight */
+			PPSR &= ~PPC_LDD1;
+			PPDR |= PPC_LDD1;
+			ret = -ETIMEDOUT;
+		}
+	} else  /* turn on backlight */
+		PPSR |= PPC_LDD1;
+
+		/* send command to our mcu */
+		if (jornada_ssp_byte(SETBRIGHTNESS) != TXDUMMY) {
+			printk(KERN_INFO "bl : failed to set brightness\n");
+			ret = -ETIMEDOUT;
+			goto out
+		}
+
+		/* at this point we expect that the mcu has accepted
+		   our command and is waiting for our new value
+		   please note that maximum brightness is 255,
+		   but due to physical layout it is equal to 0, so we simply
+		   invert the value (MAX VALUE - NEW VALUE). */
+		if (jornada_ssp_byte(BL_MAX_BRIGHT - bd->props.brightness) != TXDUMMY) {
+			printk(KERN_ERR "bl : set brightness failed\n");
+			ret = -ETIMEDOUT;
+		}
+
+		/* If infact we get an TXDUMMY as output we are happy and dont
+		   make any further comments about it */
+out:
+	jornada_ssp_end();
+
+	return ret;
+}
+
+static struct backlight_ops jornada_bl_ops = {
+	.get_brightness = jornada_bl_get_brightness,
+	.update_status = jornada_bl_update_status,
+	.options = BL_CORE_SUSPENDRESUME,
+};
+
+static int jornada_bl_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct backlight_device *bd;
+
+	bd = backlight_device_register(S1D_DEVICENAME, &pdev->dev, NULL, &jornada_bl_ops);
+
+	if (IS_ERR(bd)) {
+		ret = PTR_ERR(bd);
+		printk(KERN_ERR "bl : failed to register device, err=%x\n", ret);
+		return ret;
+	}
+
+	bd->props.power = FB_BLANK_UNBLANK;
+	bd->props.brightness = BL_DEF_BRIGHT;
+	/* note. make sure max brightness is set otherwise
+	   you will get seemingly non-related errors when
+	   trying to change brightness */
+	bd->props.max_brightness = BL_MAX_BRIGHT;
+	jornada_bl_update_status(bd);
+
+	platform_set_drvdata(pdev, bd);
+	printk(KERN_INFO "HP Jornada 700 series backlight driver\n");
+
+	return 0;
+}
+
+static int jornada_bl_remove(struct platform_device *pdev)
+{
+	struct backlight_device *bd = platform_get_drvdata(pdev);
+
+	backlight_device_unregister(bd);
+
+	return 0;
+}
+
+static struct platform_driver jornada_bl_driver = {
+	.probe		= jornada_bl_probe,
+	.remove		= jornada_bl_remove,
+	.driver	= {
+		.name	= "jornada_bl",
+	},
+};
+
+int __init jornada_bl_init(void)
+{
+	return platform_driver_register(&jornada_bl_driver);
+}
+
+void __exit jornada_bl_exit(void)
+{
+	platform_driver_unregister(&jornada_bl_driver);
+}
+
+MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson>");
+MODULE_DESCRIPTION("HP Jornada 710/720/728 Backlight driver");
+MODULE_LICENSE("GPL");
+
+module_init(jornada_bl_init);
+module_exit(jornada_bl_exit);
diff --git a/drivers/video/backlight/jornada720_lcd.c b/drivers/video/backlight/jornada720_lcd.c
new file mode 100644
index 000000000000..cbbb167fd268
--- /dev/null
+++ b/drivers/video/backlight/jornada720_lcd.c
@@ -0,0 +1,153 @@
+/*
+ *
+ * LCD driver for HP Jornada 700 series (710/720/728)
+ * Copyright (C) 2006-2009 Kristoffer Ericson <kristoffer.ericson@gmail.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 or any later version as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/lcd.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+#include <mach/jornada720.h>
+#include <mach/hardware.h>
+
+#include <video/s1d13xxxfb.h>
+
+#define LCD_MAX_CONTRAST	0xff
+#define LCD_DEF_CONTRAST	0x80
+
+static int jornada_lcd_get_power(struct lcd_device *dev)
+{
+	/* LDD2 in PPC = LCD POWER */
+	if (PPSR & PPC_LDD2)
+		return FB_BLANK_UNBLANK;	/* PW ON */
+	else
+		return FB_BLANK_POWERDOWN;	/* PW OFF */
+}
+
+static int jornada_lcd_get_contrast(struct lcd_device *dev)
+{
+	int ret;
+
+	if (jornada_lcd_get_power(dev) != FB_BLANK_UNBLANK)
+		return 0;
+
+	jornada_ssp_start();
+
+	if (jornada_ssp_byte(GETCONTRAST) != TXDUMMY) {
+		printk(KERN_ERR "lcd: get contrast failed\n");
+		jornada_ssp_end();
+		return -ETIMEDOUT;
+	} else {
+		ret = jornada_ssp_byte(TXDUMMY);
+		jornada_ssp_end();
+		return ret;
+	}
+}
+
+static int jornada_lcd_set_contrast(struct lcd_device *dev, int value)
+{
+	int ret;
+
+	jornada_ssp_start();
+
+	/* start by sending our set contrast cmd to mcu */
+	ret = jornada_ssp_byte(SETCONTRAST);
+
+	/* push the new value */
+	if (jornada_ssp_byte(value) != TXDUMMY) {
+		printk(KERN_ERR "lcd : set contrast failed\n");
+		jornada_ssp_end();
+		return -ETIMEDOUT;
+	}
+
+	/* if we get here we can assume everything went well */
+	jornada_ssp_end();
+
+	return 0;
+}
+
+static int jornada_lcd_set_power(struct lcd_device *dev, int power)
+{
+	if (power != FB_BLANK_UNBLANK) {
+		PPSR &= ~PPC_LDD2;
+		PPDR |= PPC_LDD2;
+	} else
+		PPSR |= PPC_LDD2;
+
+	return 0;
+}
+
+static struct lcd_ops jornada_lcd_props = {
+	.get_contrast = jornada_lcd_get_contrast,
+	.set_contrast = jornada_lcd_set_contrast,
+	.get_power = jornada_lcd_get_power,
+	.set_power = jornada_lcd_set_power,
+};
+
+static int jornada_lcd_probe(struct platform_device *pdev)
+{
+	struct lcd_device *lcd_device;
+	int ret;
+
+	lcd_device = lcd_device_register(S1D_DEVICENAME, &pdev->dev, NULL, &jornada_lcd_props);
+
+	if (IS_ERR(lcd_device)) {
+		ret = PTR_ERR(lcd_device);
+		printk(KERN_ERR "lcd : failed to register device\n");
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, lcd_device);
+
+	/* lets set our default values */
+	jornada_lcd_set_contrast(lcd_device, LCD_DEF_CONTRAST);
+	jornada_lcd_set_power(lcd_device, FB_BLANK_UNBLANK);
+	/* give it some time to startup */
+	msleep(100);
+
+	return 0;
+}
+
+static int jornada_lcd_remove(struct platform_device *pdev)
+{
+	struct lcd_device *lcd_device = platform_get_drvdata(pdev);
+
+	lcd_device_unregister(lcd_device);
+
+	return 0;
+}
+
+static struct platform_driver jornada_lcd_driver = {
+	.probe	= jornada_lcd_probe,
+	.remove	= jornada_lcd_remove,
+	.driver	= {
+		.name	= "jornada_lcd",
+	},
+};
+
+int __init jornada_lcd_init(void)
+{
+	return platform_driver_register(&jornada_lcd_driver);
+}
+
+void __exit jornada_lcd_exit(void)
+{
+	platform_driver_unregister(&jornada_lcd_driver);
+}
+
+MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
+MODULE_DESCRIPTION("HP Jornada 710/720/728 LCD driver");
+MODULE_LICENSE("GPL");
+
+module_init(jornada_lcd_init);
+module_exit(jornada_lcd_exit);
diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c
index 65864c500455..3bb4c0a50c62 100644
--- a/drivers/video/backlight/mbp_nvidia_bl.c
+++ b/drivers/video/backlight/mbp_nvidia_bl.c
@@ -27,73 +27,192 @@
 
 static struct backlight_device *mbp_backlight_device;
 
-static struct dmi_system_id __initdata mbp_device_table[] = {
+/* Structure to be passed to the DMI_MATCH function. */
+struct dmi_match_data {
+	/* I/O resource to allocate. */
+	unsigned long iostart;
+	unsigned long iolen;
+	/* Backlight operations structure. */
+	struct backlight_ops backlight_ops;
+};
+
+/* Module parameters. */
+static int debug;
+module_param_named(debug, debug, int, 0644);
+MODULE_PARM_DESC(debug, "Set to one to enable debugging messages.");
+
+/*
+ * Implementation for MacBooks with Intel chipset.
+ */
+static int intel_chipset_send_intensity(struct backlight_device *bd)
+{
+	int intensity = bd->props.brightness;
+
+	if (debug)
+		printk(KERN_DEBUG "mbp_nvidia_bl: setting brightness to %d\n",
+		       intensity);
+
+	outb(0x04 | (intensity << 4), 0xb3);
+	outb(0xbf, 0xb2);
+	return 0;
+}
+
+static int intel_chipset_get_intensity(struct backlight_device *bd)
+{
+	int intensity;
+
+	outb(0x03, 0xb3);
+	outb(0xbf, 0xb2);
+	intensity = inb(0xb3) >> 4;
+
+	if (debug)
+		printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
+		       intensity);
+
+	return intensity;
+}
+
+static const struct dmi_match_data intel_chipset_data = {
+	.iostart = 0xb2,
+	.iolen = 2,
+	.backlight_ops	= {
+		.options	= BL_CORE_SUSPENDRESUME,
+		.get_brightness	= intel_chipset_get_intensity,
+		.update_status	= intel_chipset_send_intensity,
+	}
+};
+
+/*
+ * Implementation for MacBooks with Nvidia chipset.
+ */
+static int nvidia_chipset_send_intensity(struct backlight_device *bd)
+{
+	int intensity = bd->props.brightness;
+
+	if (debug)
+		printk(KERN_DEBUG "mbp_nvidia_bl: setting brightness to %d\n",
+		       intensity);
+
+	outb(0x04 | (intensity << 4), 0x52f);
+	outb(0xbf, 0x52e);
+	return 0;
+}
+
+static int nvidia_chipset_get_intensity(struct backlight_device *bd)
+{
+	int intensity;
+
+	outb(0x03, 0x52f);
+	outb(0xbf, 0x52e);
+	intensity = inb(0x52f) >> 4;
+
+	if (debug)
+		printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
+		       intensity);
+
+	return intensity;
+}
+
+static const struct dmi_match_data nvidia_chipset_data = {
+	.iostart = 0x52e,
+	.iolen = 2,
+	.backlight_ops		= {
+		.options	= BL_CORE_SUSPENDRESUME,
+		.get_brightness	= nvidia_chipset_get_intensity,
+		.update_status	= nvidia_chipset_send_intensity
+	}
+};
+
+/*
+ * DMI matching.
+ */
+static /* const */ struct dmi_match_data *driver_data;
+
+static int mbp_dmi_match(const struct dmi_system_id *id)
+{
+	driver_data = id->driver_data;
+
+	printk(KERN_INFO "mbp_nvidia_bl: %s detected\n", id->ident);
+	return 1;
+}
+
+static const struct dmi_system_id __initdata mbp_device_table[] = {
 	{
-		.ident = "3,1",
-		.matches = {
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 3,1",
+		.matches	= {
 			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
 		},
+		.driver_data	= (void *)&intel_chipset_data,
 	},
 	{
-		.ident = "3,2",
-		.matches = {
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 3,2",
+		.matches	= {
 			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,2"),
 		},
+		.driver_data	= (void *)&intel_chipset_data,
 	},
 	{
-		.ident = "4,1",
-		.matches = {
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 4,1",
+		.matches	= {
 			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4,1"),
 		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBook 5,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,1"),
+		},
+		.driver_data	= (void *)&nvidia_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookAir 2,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir2,1"),
+		},
+		.driver_data	= (void *)&nvidia_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 5,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,1"),
+		},
+		.driver_data	= (void *)&nvidia_chipset_data,
 	},
 	{ }
 };
 
-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 = {
-	.options = BL_CORE_SUSPENDRESUME,
-	.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"))
+	if (!request_region(driver_data->iostart, driver_data->iolen, 
+						"Macbook Pro backlight"))
 		return -ENXIO;
 
 	mbp_backlight_device = backlight_device_register("mbp_backlight",
-							 NULL, NULL,
-							 &mbp_ops);
+					NULL, NULL, &driver_data->backlight_ops);
 	if (IS_ERR(mbp_backlight_device)) {
-		release_region(0xb2, 2);
+		release_region(driver_data->iostart, driver_data->iolen);
 		return PTR_ERR(mbp_backlight_device);
 	}
 
 	mbp_backlight_device->props.max_brightness = 15;
 	mbp_backlight_device->props.brightness =
-		mbp_get_intensity(mbp_backlight_device);
+		driver_data->backlight_ops.get_brightness(mbp_backlight_device);
 	backlight_update_status(mbp_backlight_device);
 
 	return 0;
@@ -103,7 +222,7 @@ static void __exit mbp_exit(void)
 {
 	backlight_device_unregister(mbp_backlight_device);
 
-	release_region(0xb2, 2);
+	release_region(driver_data->iostart, driver_data->iolen);
 }
 
 module_init(mbp_init);
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index ea07258565f0..e641584e212e 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -3,7 +3,7 @@
  *
  * simple PWM based backlight control, board code has to setup
  * 1) pin configuration so PWM waveforms can output
- * 2) platform_data casts to the PWM id (0/1/2/3 on PXA)
+ * 2) platform_data being correctly configured
  *
  * 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
@@ -97,7 +97,7 @@ static int pwm_backlight_probe(struct platform_device *pdev)
 	} else
 		dev_dbg(&pdev->dev, "got pwm for backlight\n");
 
-	bl = backlight_device_register(pdev->name, &pdev->dev,
+	bl = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
 			pb, &pwm_backlight_ops);
 	if (IS_ERR(bl)) {
 		dev_err(&pdev->dev, "failed to register backlight\n");