1 /* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 #include <linux/module.h>
19 #include <linux/moduleparam.h>
20 #include <linux/kernel.h>
21 #include <linux/slab.h>
23 #include <linux/string.h>
24 #include <linux/version.h>
25 #include <linux/backlight.h>
29 static int msm_fb_bl_get_brightness(struct backlight_device *pbd)
31 return pbd->props.brightness;
34 static int msm_fb_bl_update_status(struct backlight_device *pbd)
36 struct msm_fb_data_type *mfd = bl_get_data(pbd);
39 bl_lvl = pbd->props.brightness;
40 bl_lvl = mfd->fbi->bl_curve[bl_lvl];
41 msm_fb_set_backlight(mfd, bl_lvl, 1);
45 static struct backlight_ops msm_fb_bl_ops = {
46 .get_brightness = msm_fb_bl_get_brightness,
47 .update_status = msm_fb_bl_update_status,
50 void msm_fb_config_backlight(struct msm_fb_data_type *mfd)
52 struct msm_fb_panel_data *pdata;
53 struct backlight_device *pbd;
58 pdata = (struct msm_fb_panel_data *)mfd->pdev->dev.platform_data;
60 if ((pdata) && (pdata->set_backlight)) {
61 snprintf(name, sizeof(name), "msmfb_bl%d", mfd->index);
63 backlight_device_register(name, fbi->dev, mfd,
67 fb_bl_default_curve(fbi,
69 mfd->panel_info.bl_min,
70 mfd->panel_info.bl_max);
71 pbd->props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
72 pbd->props.brightness = FB_BACKLIGHT_LEVELS - 1;
73 backlight_update_status(pbd);
76 printk(KERN_ERR "msm_fb: backlight_device_register failed!\n");