backlight.c (71af75b6929458d85f63c0649dc26d6f4c19729e) backlight.c (f71635e893c3832790484f2e22b8d5825cc6ce1c)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * GMA500 Backlight Interface
4 *
5 * Copyright (c) 2009-2011, Intel Corporation.
6 *
7 * Authors: Eric Knopp
8 */
9
10#include "psb_drv.h"
11#include "psb_intel_reg.h"
12#include "psb_intel_drv.h"
13#include "intel_bios.h"
14#include "power.h"
15
16#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
17static void do_gma_backlight_set(struct drm_device *dev)
18{
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * GMA500 Backlight Interface
4 *
5 * Copyright (c) 2009-2011, Intel Corporation.
6 *
7 * Authors: Eric Knopp
8 */
9
10#include "psb_drv.h"
11#include "psb_intel_reg.h"
12#include "psb_intel_drv.h"
13#include "intel_bios.h"
14#include "power.h"
15
16#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
17static void do_gma_backlight_set(struct drm_device *dev)
18{
19 struct drm_psb_private *dev_priv = dev->dev_private;
19 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
20 backlight_update_status(dev_priv->backlight_device);
21}
22#endif
23
24void gma_backlight_enable(struct drm_device *dev)
25{
26#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
20 backlight_update_status(dev_priv->backlight_device);
21}
22#endif
23
24void gma_backlight_enable(struct drm_device *dev)
25{
26#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
27 struct drm_psb_private *dev_priv = dev->dev_private;
27 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
28 dev_priv->backlight_enabled = true;
29 if (dev_priv->backlight_device) {
30 dev_priv->backlight_device->props.brightness = dev_priv->backlight_level;
31 do_gma_backlight_set(dev);
32 }
33#endif
34}
35
36void gma_backlight_disable(struct drm_device *dev)
37{
38#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
28 dev_priv->backlight_enabled = true;
29 if (dev_priv->backlight_device) {
30 dev_priv->backlight_device->props.brightness = dev_priv->backlight_level;
31 do_gma_backlight_set(dev);
32 }
33#endif
34}
35
36void gma_backlight_disable(struct drm_device *dev)
37{
38#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
39 struct drm_psb_private *dev_priv = dev->dev_private;
39 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
40 dev_priv->backlight_enabled = false;
41 if (dev_priv->backlight_device) {
42 dev_priv->backlight_device->props.brightness = 0;
43 do_gma_backlight_set(dev);
44 }
45#endif
46}
47
48void gma_backlight_set(struct drm_device *dev, int v)
49{
50#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
40 dev_priv->backlight_enabled = false;
41 if (dev_priv->backlight_device) {
42 dev_priv->backlight_device->props.brightness = 0;
43 do_gma_backlight_set(dev);
44 }
45#endif
46}
47
48void gma_backlight_set(struct drm_device *dev, int v)
49{
50#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
51 struct drm_psb_private *dev_priv = dev->dev_private;
51 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
52 dev_priv->backlight_level = v;
53 if (dev_priv->backlight_device && dev_priv->backlight_enabled) {
54 dev_priv->backlight_device->props.brightness = v;
55 do_gma_backlight_set(dev);
56 }
57#endif
58}
59
60int gma_backlight_init(struct drm_device *dev)
61{
62#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
52 dev_priv->backlight_level = v;
53 if (dev_priv->backlight_device && dev_priv->backlight_enabled) {
54 dev_priv->backlight_device->props.brightness = v;
55 do_gma_backlight_set(dev);
56 }
57#endif
58}
59
60int gma_backlight_init(struct drm_device *dev)
61{
62#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
63 struct drm_psb_private *dev_priv = dev->dev_private;
63 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
64 dev_priv->backlight_enabled = true;
65 return dev_priv->ops->backlight_init(dev);
66#else
67 return 0;
68#endif
69}
70
71void gma_backlight_exit(struct drm_device *dev)
72{
73#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
64 dev_priv->backlight_enabled = true;
65 return dev_priv->ops->backlight_init(dev);
66#else
67 return 0;
68#endif
69}
70
71void gma_backlight_exit(struct drm_device *dev)
72{
73#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
74 struct drm_psb_private *dev_priv = dev->dev_private;
74 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
75 if (dev_priv->backlight_device) {
76 dev_priv->backlight_device->props.brightness = 0;
77 backlight_update_status(dev_priv->backlight_device);
78 backlight_device_unregister(dev_priv->backlight_device);
79 }
80#endif
81}
75 if (dev_priv->backlight_device) {
76 dev_priv->backlight_device->props.brightness = 0;
77 backlight_update_status(dev_priv->backlight_device);
78 backlight_device_unregister(dev_priv->backlight_device);
79 }
80#endif
81}