diff options
Diffstat (limited to 'drivers/staging/msm/msm_fb_bl.c')
| -rw-r--r-- | drivers/staging/msm/msm_fb_bl.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/staging/msm/msm_fb_bl.c b/drivers/staging/msm/msm_fb_bl.c new file mode 100644 index 000000000000..033fc9486e01 --- /dev/null +++ b/drivers/staging/msm/msm_fb_bl.c @@ -0,0 +1,79 @@ +/* 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 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"); + } + } +} |