blob: 35600d070cb53e36a96e7ac21a12de3fa6310b11 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* GMA500 Backlight Interface
*
* Copyright (c) 2009-2011, Intel Corporation.
*
* Authors: Eric Knopp
*/
#include "psb_drv.h"
#include "psb_intel_reg.h"
#include "psb_intel_drv.h"
#include "intel_bios.h"
#include "power.h"
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
static void do_gma_backlight_set(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
backlight_update_status(dev_priv->backlight_device);
}
#endif
void gma_backlight_enable(struct drm_device *dev)
{
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
struct drm_psb_private *dev_priv = dev->dev_private;
dev_priv->backlight_enabled = true;
if (dev_priv->backlight_device) {
dev_priv->backlight_device->props.brightness = dev_priv->backlight_level;
do_gma_backlight_set(dev);
}
#endif
}
void gma_backlight_disable(struct drm_device *dev)
{
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
struct drm_psb_private *dev_priv = dev->dev_private;
dev_priv->backlight_enabled = false;
if (dev_priv->backlight_device) {
dev_priv->backlight_device->props.brightness = 0;
do_gma_backlight_set(dev);
}
#endif
}
void gma_backlight_set(struct drm_device *dev, int v)
{
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
struct drm_psb_private *dev_priv = dev->dev_private;
dev_priv->backlight_level = v;
if (dev_priv->backlight_device && dev_priv->backlight_enabled) {
dev_priv->backlight_device->props.brightness = v;
do_gma_backlight_set(dev);
}
#endif
}
int gma_backlight_init(struct drm_device *dev)
{
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
struct drm_psb_private *dev_priv = dev->dev_private;
dev_priv->backlight_enabled = true;
return dev_priv->ops->backlight_init(dev);
#else
return 0;
#endif
}
void gma_backlight_exit(struct drm_device *dev)
{
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
struct drm_psb_private *dev_priv = dev->dev_private;
if (dev_priv->backlight_device) {
dev_priv->backlight_device->props.brightness = 0;
backlight_update_status(dev_priv->backlight_device);
backlight_device_unregister(dev_priv->backlight_device);
}
#endif
}
|
