Release 4.11 drivers/video/backlight/generic_bl.c
/*
* Generic Backlight Driver
*
* Copyright (c) 2004-2008 Richard Purdie
*
* 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>
static int genericbl_intensity;
static struct backlight_device *generic_backlight_device;
static struct generic_bl_info *bl_machinfo;
/* Flag to signal when the battery is low */
#define GENERICBL_BATTLOW BL_CORE_DRIVER1
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;
if (bd->props.state & GENERICBL_BATTLOW)
intensity &= bl_machinfo->limit_mask;
bl_machinfo->set_bl_intensity(intensity);
genericbl_intensity = intensity;
if (bl_machinfo->kick_battery)
bl_machinfo->kick_battery();
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Richard Purdie | 78 | 75.73% | 7 | 87.50% |
| Antonino A. Daplas | 25 | 24.27% | 1 | 12.50% |
| Total | 103 | 100.00% | 8 | 100.00% |
static int genericbl_get_intensity(struct backlight_device *bd)
{
return genericbl_intensity;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Antonino A. Daplas | 12 | 85.71% | 1 | 50.00% |
| Richard Purdie | 2 | 14.29% | 1 | 50.00% |
| Total | 14 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Richard Purdie | 94 | 51.37% | 9 | 56.25% |
| Matthew Garrett | 35 | 19.13% | 2 | 12.50% |
| Antonino A. Daplas | 34 | 18.58% | 1 | 6.25% |
| Jingoo Han | 16 | 8.74% | 3 | 18.75% |
| Russell King | 4 | 2.19% | 1 | 6.25% |
| Total | 183 | 100.00% | 16 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Richard Purdie | 21 | 38.18% | 3 | 42.86% |
| Antonino A. Daplas | 14 | 25.45% | 1 | 14.29% |
| Henrique de Moraes Holschuh | 13 | 23.64% | 1 | 14.29% |
| Jingoo Han | 6 | 10.91% | 1 | 14.29% |
| Russell King | 1 | 1.82% | 1 | 14.29% |
| Total | 55 | 100.00% | 7 | 100.00% |
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");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Richard Purdie | 230 | 49.15% | 11 | 47.83% |
| Antonino A. Daplas | 150 | 32.05% | 1 | 4.35% |
| Matthew Garrett | 35 | 7.48% | 2 | 8.70% |
| Jingoo Han | 22 | 4.70% | 3 | 13.04% |
| Russell King | 14 | 2.99% | 2 | 8.70% |
| Henrique de Moraes Holschuh | 13 | 2.78% | 1 | 4.35% |
| Axel Lin | 2 | 0.43% | 1 | 4.35% |
| Anton Vorontsov | 1 | 0.21% | 1 | 4.35% |
| Emese Revfy | 1 | 0.21% | 1 | 4.35% |
| Total | 468 | 100.00% | 23 | 100.00% |
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