acpi_video.c (db6da59cf27b5661ced03754ae0550f8914eda9e) acpi_video.c (6f7016819766a55bf90e21fdb8a8532418009adb)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * video.c - ACPI Video Driver
4 *
5 * Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
6 * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
7 * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net>
8 */

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72
73static bool may_report_brightness_keys;
74static int register_count;
75static DEFINE_MUTEX(register_count_mutex);
76static DEFINE_MUTEX(video_list_lock);
77static LIST_HEAD(video_bus_head);
78static int acpi_video_bus_add(struct acpi_device *device);
79static void acpi_video_bus_remove(struct acpi_device *device);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * video.c - ACPI Video Driver
4 *
5 * Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
6 * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
7 * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net>
8 */

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72
73static bool may_report_brightness_keys;
74static int register_count;
75static DEFINE_MUTEX(register_count_mutex);
76static DEFINE_MUTEX(video_list_lock);
77static LIST_HEAD(video_bus_head);
78static int acpi_video_bus_add(struct acpi_device *device);
79static void acpi_video_bus_remove(struct acpi_device *device);
80static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
80static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data);
81
82/*
83 * Indices in the _BCL method response: the first two items are special,
84 * the rest are all supported levels.
85 *
86 * See page 575 of the ACPI spec 3.0
87 */
88enum acpi_video_level_idx {

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99
100static struct acpi_driver acpi_video_bus = {
101 .name = "video",
102 .class = ACPI_VIDEO_CLASS,
103 .ids = video_device_ids,
104 .ops = {
105 .add = acpi_video_bus_add,
106 .remove = acpi_video_bus_remove,
81
82/*
83 * Indices in the _BCL method response: the first two items are special,
84 * the rest are all supported levels.
85 *
86 * See page 575 of the ACPI spec 3.0
87 */
88enum acpi_video_level_idx {

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99
100static struct acpi_driver acpi_video_bus = {
101 .name = "video",
102 .class = ACPI_VIDEO_CLASS,
103 .ids = video_device_ids,
104 .ops = {
105 .add = acpi_video_bus_add,
106 .remove = acpi_video_bus_remove,
107 .notify = acpi_video_bus_notify,
108 },
109};
110
111struct acpi_video_bus_flags {
112 u8 multihead:1; /* can switch video heads */
113 u8 rom:1; /* can retrieve a video rom */
114 u8 post:1; /* can configure the head to */
115 u8 reserved:5;

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1522}
1523
1524static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
1525{
1526 return acpi_video_bus_DOS(video, 0,
1527 acpi_osi_is_win8() ? 0 : 1);
1528}
1529
107 },
108};
109
110struct acpi_video_bus_flags {
111 u8 multihead:1; /* can switch video heads */
112 u8 rom:1; /* can retrieve a video rom */
113 u8 post:1; /* can configure the head to */
114 u8 reserved:5;

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1521}
1522
1523static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
1524{
1525 return acpi_video_bus_DOS(video, 0,
1526 acpi_osi_is_win8() ? 0 : 1);
1527}
1528
1530static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
1529static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
1531{
1530{
1531 struct acpi_device *device = data;
1532 struct acpi_video_bus *video = acpi_driver_data(device);
1533 struct input_dev *input;
1534 int keycode = 0;
1535
1536 if (!video || !video->input)
1537 return;
1538
1539 input = video->input;

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2048 */
2049 acpi_video_run_bcl_for_osi(video);
2050 if (__acpi_video_get_backlight_type(false, &auto_detect) == acpi_backlight_video &&
2051 !auto_detect)
2052 acpi_video_bus_register_backlight(video);
2053
2054 acpi_video_bus_add_notify_handler(video);
2055
1532 struct acpi_video_bus *video = acpi_driver_data(device);
1533 struct input_dev *input;
1534 int keycode = 0;
1535
1536 if (!video || !video->input)
1537 return;
1538
1539 input = video->input;

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2048 */
2049 acpi_video_run_bcl_for_osi(video);
2050 if (__acpi_video_get_backlight_type(false, &auto_detect) == acpi_backlight_video &&
2051 !auto_detect)
2052 acpi_video_bus_register_backlight(video);
2053
2054 acpi_video_bus_add_notify_handler(video);
2055
2056 error = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
2057 acpi_video_bus_notify);
2058 if (error)
2059 goto err_remove;
2060
2056 return 0;
2057
2061 return 0;
2062
2063err_remove:
2064 mutex_lock(&video_list_lock);
2065 list_del(&video->entry);
2066 mutex_unlock(&video_list_lock);
2067 acpi_video_bus_remove_notify_handler(video);
2068 acpi_video_bus_unregister_backlight(video);
2058err_put_video:
2059 acpi_video_bus_put_devices(video);
2060 kfree(video->attached_array);
2061err_free_video:
2062 kfree(video);
2063 device->driver_data = NULL;
2064
2065 return error;

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2070 struct acpi_video_bus *video = NULL;
2071
2072
2073 if (!device || !acpi_driver_data(device))
2074 return;
2075
2076 video = acpi_driver_data(device);
2077
2069err_put_video:
2070 acpi_video_bus_put_devices(video);
2071 kfree(video->attached_array);
2072err_free_video:
2073 kfree(video);
2074 device->driver_data = NULL;
2075
2076 return error;

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2081 struct acpi_video_bus *video = NULL;
2082
2083
2084 if (!device || !acpi_driver_data(device))
2085 return;
2086
2087 video = acpi_driver_data(device);
2088
2089 acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
2090 acpi_video_bus_notify);
2091
2078 mutex_lock(&video_list_lock);
2079 list_del(&video->entry);
2080 mutex_unlock(&video_list_lock);
2081
2082 acpi_video_bus_remove_notify_handler(video);
2083 acpi_video_bus_unregister_backlight(video);
2084 acpi_video_bus_put_devices(video);
2085

--- 183 unchanged lines hidden --- 		2092 mutex_lock(&video_list_lock);
2093 list_del(&video->entry);
2094 mutex_unlock(&video_list_lock);
2095
2096 acpi_video_bus_remove_notify_handler(video);
2097 acpi_video_bus_unregister_backlight(video);
2098 acpi_video_bus_put_devices(video);
2099

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