backlight: generic_bl: Remove this driver as it is unused

The backlight_bl driver required initialization using
struct generic_bl_info. As there are no more references
to this struct there is no users left.
So it is safe to delete the driver.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/video/backlight/Kconfig

@@ -173,14 +173,6 @@ config BACKLIGHT_EP93XX
 	  To compile this driver as a module, choose M here: the module will
 	  be called ep93xx_bl.
 
-config BACKLIGHT_GENERIC
-	tristate "Generic (aka Sharp Corgi) Backlight Driver"
-	default y
-	help
-	  Say y to enable the generic platform backlight driver previously
-	  known as the Corgi backlight driver. If you have a Sharp Zaurus
-	  SL-C7xx, SL-Cxx00 or SL-6000x say y.
-
 config BACKLIGHT_IPAQ_MICRO
 	tristate "iPAQ microcontroller backlight driver"
 	depends on MFD_IPAQ_MICRO

drivers/video/backlight/Makefile

@@ -31,7 +31,6 @@ obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE)	+= backlight.o
 obj-$(CONFIG_BACKLIGHT_DA903X)		+= da903x_bl.o
 obj-$(CONFIG_BACKLIGHT_DA9052)		+= da9052_bl.o
 obj-$(CONFIG_BACKLIGHT_EP93XX)		+= ep93xx_bl.o
-obj-$(CONFIG_BACKLIGHT_GENERIC)		+= generic_bl.o
 obj-$(CONFIG_BACKLIGHT_GPIO)		+= gpio_backlight.o
 obj-$(CONFIG_BACKLIGHT_HP680)		+= hp680_bl.o
 obj-$(CONFIG_BACKLIGHT_HP700)		+= jornada720_bl.o

drivers/video/backlight/generic_bl.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  Generic Backlight Driver
- *
- *  Copyright (c) 2004-2008 Richard Purdie
- */
-
-#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>
-
-static int genericbl_intensity;
-static struct backlight_device *generic_backlight_device;
-static struct generic_bl_info *bl_machinfo;
-
-static int genericbl_send_intensity(struct backlight_device *bd)
-{
-	int intensity = bd->props.brightness;
-
-	if (bd->props.power != FB_BLANK_UNBLANK)
-		intensity = 0;
-	if (bd->props.state & BL_CORE_FBBLANK)
-		intensity = 0;
-	if (bd->props.state & BL_CORE_SUSPENDED)
-		intensity = 0;
-
-	bl_machinfo->set_bl_intensity(intensity);
-
-	genericbl_intensity = intensity;
-
-	if (bl_machinfo->kick_battery)
-		bl_machinfo->kick_battery();
-
-	return 0;
-}
-
-static int genericbl_get_intensity(struct backlight_device *bd)
-{
-	return genericbl_intensity;
-}
-
-static const struct backlight_ops genericbl_ops = {
-	.options = BL_CORE_SUSPENDRESUME,
-	.get_brightness = genericbl_get_intensity,
-	.update_status  = genericbl_send_intensity,
-};
-
-static int genericbl_probe(struct platform_device *pdev)
-{
-	struct backlight_properties props;
-	struct generic_bl_info *machinfo = dev_get_platdata(&pdev->dev);
-	const char *name = "generic-bl";
-	struct backlight_device *bd;
-
-	bl_machinfo = machinfo;
-	if (!machinfo->limit_mask)
-		machinfo->limit_mask = -1;
-
-	if (machinfo->name)
-		name = machinfo->name;
-
-	memset(&props, 0, sizeof(struct backlight_properties));
-	props.type = BACKLIGHT_RAW;
-	props.max_brightness = machinfo->max_intensity;
-	bd = devm_backlight_device_register(&pdev->dev, name, &pdev->dev,
-					NULL, &genericbl_ops, &props);
-	if (IS_ERR(bd))
-		return PTR_ERR(bd);
-
-	platform_set_drvdata(pdev, bd);
-
-	bd->props.power = FB_BLANK_UNBLANK;
-	bd->props.brightness = machinfo->default_intensity;
-	backlight_update_status(bd);
-
-	generic_backlight_device = bd;
-
-	dev_info(&pdev->dev, "Generic Backlight Driver Initialized.\n");
-	return 0;
-}
-
-static int genericbl_remove(struct platform_device *pdev)
-{
-	struct backlight_device *bd = platform_get_drvdata(pdev);
-
-	bd->props.power = 0;
-	bd->props.brightness = 0;
-	backlight_update_status(bd);
-
-	dev_info(&pdev->dev, "Generic Backlight Driver Unloaded\n");
-	return 0;
-}
-
-static struct platform_driver genericbl_driver = {
-	.probe		= genericbl_probe,
-	.remove		= genericbl_remove,
-	.driver		= {
-		.name	= "generic-bl",
-	},
-};
-
-module_platform_driver(genericbl_driver);
-
-MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
-MODULE_DESCRIPTION("Generic Backlight Driver");
-MODULE_LICENSE("GPL");

include/linux/backlight.h

@@ -454,15 +454,6 @@ static inline void * bl_get_data(struct backlight_device *bl_dev)
 	return dev_get_drvdata(&bl_dev->dev);
 }
 
-struct generic_bl_info {
-	const char *name;
-	int max_intensity;
-	int default_intensity;
-	int limit_mask;
-	void (*set_bl_intensity)(int intensity);
-	void (*kick_battery)(void);
-};
-
 #ifdef CONFIG_OF
 struct backlight_device *of_find_backlight_by_node(struct device_node *node);
 #else