| Alan Cox | bbbb262 | 2011-11-03 18:21:31 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * GMA500 Backlight Interface |
| 3 | * |
| 4 | * Copyright (c) 2009-2011, Intel Corporation. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms and conditions of the GNU General Public License, |
| 8 | * version 2, as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | * more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along with |
| 16 | * this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Authors: Eric Knopp |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include "psb_drv.h" |
| 24 | #include "psb_intel_reg.h" |
| 25 | #include "psb_intel_drv.h" |
| 26 | #include "intel_bios.h" |
| 27 | #include "power.h" |
| 28 | |
| 29 | int gma_backlight_init(struct drm_device *dev) |
| 30 | { |
| 31 | #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE |
| 32 | struct drm_psb_private *dev_priv = dev->dev_private; |
| 33 | return dev_priv->ops->backlight_init(dev); |
| 34 | #else |
| 35 | return 0; |
| 36 | #endif |
| 37 | } |
| 38 | |
| 39 | void gma_backlight_exit(struct drm_device *dev) |
| 40 | { |
| 41 | #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE |
| 42 | struct drm_psb_private *dev_priv = dev->dev_private; |
| 43 | if (dev_priv->backlight_device) { |
| 44 | dev_priv->backlight_device->props.brightness = 0; |
| 45 | backlight_update_status(dev_priv->backlight_device); |
| 46 | backlight_device_unregister(dev_priv->backlight_device); |
| 47 | } |
| 48 | #endif |
| 49 | } |