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backlight: generic_bl: Remove this driver as it is unused

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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>
This commit is contained in:
Sam Ravnborg 2020-07-19 10:07:32 +02:00 committed by Lee Jones
parent 2d15bb47f3
commit 7ecdea4a02
4 changed files with 0 additions and 128 deletions
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8
drivers/video/backlight/Kconfig
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@ -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

1
drivers/video/backlight/Makefile
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@ -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

110
drivers/video/backlight/generic_bl.c
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@ -1,110 +0,0 @@
// 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");

9
include/linux/backlight.h
View File

@ -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