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/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/string.h>
#include <linux/version.h>
#include <linux/backlight.h>
#include "msm_fb.h"
static int msm_fb_bl_get_brightness(struct backlight_device *pbd)
{
return pbd->props.brightness;
}
static int msm_fb_bl_update_status(struct backlight_device *pbd)
{
struct msm_fb_data_type *mfd = bl_get_data(pbd);
__u32 bl_lvl;
bl_lvl = pbd->props.brightness;
bl_lvl = mfd->fbi->bl_curve[bl_lvl];
msm_fb_set_backlight(mfd, bl_lvl, 1);
return 0;
}
static const struct backlight_ops msm_fb_bl_ops = {
.get_brightness = msm_fb_bl_get_brightness,
.update_status = msm_fb_bl_update_status,
};
void msm_fb_config_backlight(struct msm_fb_data_type *mfd)
{
struct msm_fb_panel_data *pdata;
struct backlight_device *pbd;
struct fb_info *fbi;
char name[16];
fbi = mfd->fbi;
pdata = (struct msm_fb_panel_data *)mfd->pdev->dev.platform_data;
if ((pdata) && (pdata->set_backlight)) {
snprintf(name, sizeof(name), "msmfb_bl%d", mfd->index);
pbd =
backlight_device_register(name, fbi->dev, mfd,
&msm_fb_bl_ops);
if (!IS_ERR(pbd)) {
fbi->bl_dev = pbd;
fb_bl_default_curve(fbi,
0,
mfd->panel_info.bl_min,
mfd->panel_info.bl_max);
pbd->props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
pbd->props.brightness = FB_BACKLIGHT_LEVELS - 1;
backlight_update_status(pbd);
} else {
fbi->bl_dev = NULL;
printk(KERN_ERR "msm_fb: backlight_device_register failed!\n");
}
}
}
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