diff -rupN linux-5.10.100-orig/drivers/video/backlight/Kconfig linux-5.10.100/drivers/video/backlight/Kconfig
--- linux-5.10.100-orig/drivers/video/backlight/Kconfig	2022-02-11 08:09:03.000000000 +0000
+++ linux-5.10.100/drivers/video/backlight/Kconfig	2022-02-12 21:52:54.561179953 +0000
@@ -386,6 +386,13 @@ config BACKLIGHT_LP8788
 	help
 	  This supports TI LP8788 backlight driver.
 
+config BACKLIGHT_OPENFRAME
+	tristate "Openframe Backlight Driver"
+	depends on BACKLIGHT_CLASS_DEVICE && PCI && X86
+	help
+	  If you have an OpenFrame device say Y to enable the
+	  backlight driver.
+
 config BACKLIGHT_PANDORA
 	tristate "Backlight driver for Pandora console"
 	depends on TWL4030_CORE
diff -rupN linux-5.10.100-orig/drivers/video/backlight/Makefile linux-5.10.100/drivers/video/backlight/Makefile
--- linux-5.10.100-orig/drivers/video/backlight/Makefile	2022-02-11 08:09:03.000000000 +0000
+++ linux-5.10.100/drivers/video/backlight/Makefile	2022-02-12 21:53:21.357585032 +0000
@@ -45,6 +45,7 @@ obj-$(CONFIG_BACKLIGHT_LP8788)		+= lp878
 obj-$(CONFIG_BACKLIGHT_LV5207LP)	+= lv5207lp.o
 obj-$(CONFIG_BACKLIGHT_MAX8925)		+= max8925_bl.o
 obj-$(CONFIG_BACKLIGHT_OMAP1)		+= omap1_bl.o
+obj-$(CONFIG_BACKLIGHT_OPENFRAME)	+= openframe_bl.o
 obj-$(CONFIG_BACKLIGHT_PANDORA)		+= pandora_bl.o
 obj-$(CONFIG_BACKLIGHT_PCF50633)	+= pcf50633-backlight.o
 obj-$(CONFIG_BACKLIGHT_PWM)		+= pwm_bl.o
diff -rupN linux-5.10.100-orig/drivers/video/backlight/openframe_bl.c linux-5.10.100/drivers/video/backlight/openframe_bl.c
--- linux-5.10.100-orig/drivers/video/backlight/openframe_bl.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-5.10.100/drivers/video/backlight/openframe_bl.c	2022-02-12 21:54:07.241431420 +0000
@@ -0,0 +1,143 @@
+/*
+ *  Backlight Driver for Openframe devices
+ *
+ *  Copyright (c) 2010 Andrew de Quincey
+ *
+ *  Based onprogear_bl.c driver by Marcin Juszkiewicz
+ *  <linux at hrw dot one dot pl>
+ *
+ *  Based on Progear LCD driver by M Schacht
+ *  <mschacht at alumni dot washington dot edu>
+ *
+ *  Based on Sharp's Corgi Backlight Driver
+ *  Based on Backlight Driver for HP Jornada 680
+ *
+ *  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/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/pci.h>
+
+static struct pci_dev *gfx_dev = NULL;
+static u32 *bl_baseptr = NULL;
+
+static int openframe_set_intensity(struct backlight_device *bd)
+{
+	int intensity = bd->props.brightness;
+
+	if (bd->props.power != FB_BLANK_UNBLANK)
+		intensity = 0;
+	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
+		intensity = 0;
+
+	*bl_baseptr = (intensity << 1) | 0x400000;
+
+	return 0;
+}
+
+static int openframe_get_intensity(struct backlight_device *bd)
+{
+	int intensity;
+
+	intensity = (*bl_baseptr >> 1) & 0x2f;
+
+	return intensity;
+}
+
+static struct backlight_ops openframe_ops = {
+	.get_brightness = openframe_get_intensity,
+	.update_status = openframe_set_intensity,
+};
+
+static int openframe_probe(struct platform_device *pdev)
+{
+	u32 temp;
+	struct backlight_device *openframe_backlight_device;
+	struct backlight_properties props;
+
+	gfx_dev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x8108, NULL);
+	if (!gfx_dev) {
+		printk("Intel SCH Poulsbo graphics controller not found.\n");
+		return -ENODEV;
+	}
+
+	pci_read_config_dword(gfx_dev, 16, &temp);
+	bl_baseptr = ioremap(temp + 0x61254, 4);
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.max_brightness = 32;
+	props.power = FB_BLANK_UNBLANK;
+	props.type = BACKLIGHT_PLATFORM;
+	props.brightness = 32;
+	openframe_backlight_device = backlight_device_register("openframe-bl",
+							     &pdev->dev, NULL,
+							     &openframe_ops, &props);
+	if (IS_ERR(openframe_backlight_device)) {
+		iounmap(bl_baseptr);
+		pci_dev_put(gfx_dev);
+		return PTR_ERR(openframe_backlight_device);
+	}
+	platform_set_drvdata(pdev, openframe_backlight_device);
+
+	openframe_set_intensity(openframe_backlight_device);
+
+	return 0;
+}
+
+static int openframe_remove(struct platform_device *pdev)
+{
+	struct backlight_device *bd = platform_get_drvdata(pdev);
+	backlight_device_unregister(bd);
+
+	iounmap(bl_baseptr);
+	pci_dev_put(gfx_dev);
+
+	return 0;
+}
+
+static struct platform_driver openframe_driver = {
+	.probe = openframe_probe,
+	.remove = openframe_remove,
+	.driver = {
+		   .name = "openframe-bl",
+		   },
+};
+
+static struct platform_device *openframe_device;
+
+static int __init openframe_init(void)
+{
+	int ret = platform_driver_register(&openframe_driver);
+
+	if (ret)
+		return ret;
+	openframe_device = platform_device_register_simple("openframe-bl", -1,
+								NULL, 0);
+	if (IS_ERR(openframe_device)) {
+		platform_driver_unregister(&openframe_driver);
+		return PTR_ERR(openframe_device);
+	}
+
+	return 0;
+}
+
+static void __exit openframe_exit(void)
+{
+	platform_device_unregister(openframe_device);
+	platform_driver_unregister(&openframe_driver);
+}
+
+module_init(openframe_init);
+module_exit(openframe_exit);
+
+MODULE_AUTHOR("Andrew de Quincey <adq@lidskialf.net>");
+MODULE_DESCRIPTION("Openframe Backlight Driver");
+MODULE_LICENSE("GPL");