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path: root/drivers/acpi/video.c
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Diffstat (limited to 'drivers/acpi/video.c')
-rw-r--r--drivers/acpi/video.c37
1 files changed, 1 insertions, 36 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a695aeb8b2a7..e0b97add8c63 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -73,16 +73,14 @@ MODULE_LICENSE("GPL");
73 73
74static int acpi_video_bus_add(struct acpi_device *device); 74static int acpi_video_bus_add(struct acpi_device *device);
75static int acpi_video_bus_remove(struct acpi_device *device, int type); 75static int acpi_video_bus_remove(struct acpi_device *device, int type);
76static int acpi_video_bus_match(struct acpi_device *device,
77 struct acpi_driver *driver);
78 76
79static struct acpi_driver acpi_video_bus = { 77static struct acpi_driver acpi_video_bus = {
80 .name = ACPI_VIDEO_DRIVER_NAME, 78 .name = ACPI_VIDEO_DRIVER_NAME,
81 .class = ACPI_VIDEO_CLASS, 79 .class = ACPI_VIDEO_CLASS,
80 .ids = ACPI_VIDEO_HID,
82 .ops = { 81 .ops = {
83 .add = acpi_video_bus_add, 82 .add = acpi_video_bus_add,
84 .remove = acpi_video_bus_remove, 83 .remove = acpi_video_bus_remove,
85 .match = acpi_video_bus_match,
86 }, 84 },
87}; 85};
88 86
@@ -1885,39 +1883,6 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
1885 return 0; 1883 return 0;
1886} 1884}
1887 1885
1888static int
1889acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver)
1890{
1891 acpi_handle h_dummy1;
1892 acpi_handle h_dummy2;
1893 acpi_handle h_dummy3;
1894
1895
1896 if (!device || !driver)
1897 return -EINVAL;
1898
1899 /* Since there is no HID, CID for ACPI Video drivers, we have
1900 * to check well known required nodes for each feature we support.
1901 */
1902
1903 /* Does this device able to support video switching ? */
1904 if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
1905 ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
1906 return 0;
1907
1908 /* Does this device able to retrieve a video ROM ? */
1909 if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
1910 return 0;
1911
1912 /* Does this device able to configure which video head to be POSTed ? */
1913 if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
1914 ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
1915 ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
1916 return 0;
1917
1918 return -ENODEV;
1919}
1920
1921static int __init acpi_video_init(void) 1886static int __init acpi_video_init(void)
1922{ 1887{
1923 int result = 0; 1888 int result = 0;