| /* 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/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"); |
| } |
| } |
| } |