diff options
-rw-r--r-- | drivers/gpu/drm/i915/intel_lvds.c | 67 |
1 files changed, 2 insertions, 65 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 3118ce274e67..539d97ee79e6 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c | |||
@@ -854,65 +854,6 @@ static const struct dmi_system_id intel_no_lvds[] = { | |||
854 | { } /* terminating entry */ | 854 | { } /* terminating entry */ |
855 | }; | 855 | }; |
856 | 856 | ||
857 | #ifdef CONFIG_ACPI | ||
858 | /* | ||
859 | * check_lid_device -- check whether @handle is an ACPI LID device. | ||
860 | * @handle: ACPI device handle | ||
861 | * @level : depth in the ACPI namespace tree | ||
862 | * @context: the number of LID device when we find the device | ||
863 | * @rv: a return value to fill if desired (Not use) | ||
864 | */ | ||
865 | static acpi_status | ||
866 | check_lid_device(acpi_handle handle, u32 level, void *context, | ||
867 | void **return_value) | ||
868 | { | ||
869 | struct acpi_device *acpi_dev; | ||
870 | int *lid_present = context; | ||
871 | |||
872 | acpi_dev = NULL; | ||
873 | /* Get the acpi device for device handle */ | ||
874 | if (acpi_bus_get_device(handle, &acpi_dev) || !acpi_dev) { | ||
875 | /* If there is no ACPI device for handle, return */ | ||
876 | return AE_OK; | ||
877 | } | ||
878 | |||
879 | if (!strncmp(acpi_device_hid(acpi_dev), "PNP0C0D", 7)) | ||
880 | *lid_present = 1; | ||
881 | |||
882 | return AE_OK; | ||
883 | } | ||
884 | |||
885 | /** | ||
886 | * check whether there exists the ACPI LID device by enumerating the ACPI | ||
887 | * device tree. | ||
888 | */ | ||
889 | static int intel_lid_present(void) | ||
890 | { | ||
891 | int lid_present = 0; | ||
892 | |||
893 | if (acpi_disabled) { | ||
894 | /* If ACPI is disabled, there is no ACPI device tree to | ||
895 | * check, so assume the LID device would have been present. | ||
896 | */ | ||
897 | return 1; | ||
898 | } | ||
899 | |||
900 | acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, | ||
901 | ACPI_UINT32_MAX, | ||
902 | check_lid_device, NULL, &lid_present, NULL); | ||
903 | |||
904 | return lid_present; | ||
905 | } | ||
906 | #else | ||
907 | static int intel_lid_present(void) | ||
908 | { | ||
909 | /* In the absence of ACPI built in, assume that the LID device would | ||
910 | * have been present. | ||
911 | */ | ||
912 | return 1; | ||
913 | } | ||
914 | #endif | ||
915 | |||
916 | /** | 857 | /** |
917 | * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID | 858 | * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID |
918 | * @dev: drm device | 859 | * @dev: drm device |
@@ -1031,12 +972,8 @@ void intel_lvds_init(struct drm_device *dev) | |||
1031 | if (dmi_check_system(intel_no_lvds)) | 972 | if (dmi_check_system(intel_no_lvds)) |
1032 | return; | 973 | return; |
1033 | 974 | ||
1034 | /* | 975 | if (!lvds_is_present_in_vbt(dev)) { |
1035 | * Assume LVDS is present if there's an ACPI lid device or if the | 976 | DRM_DEBUG_KMS("LVDS is not present in VBT\n"); |
1036 | * device is present in the VBT. | ||
1037 | */ | ||
1038 | if (!lvds_is_present_in_vbt(dev) && !intel_lid_present()) { | ||
1039 | DRM_DEBUG_KMS("LVDS is not present in VBT and no lid detected\n"); | ||
1040 | return; | 977 | return; |
1041 | } | 978 | } |
1042 | 979 | ||