xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm: Add DRM_MODE_TYPE_USERDEF flag to probed modes matching a video= argument

Browse Source 
drm_helper_probe_add_cmdline_mode() prefers using a probed mode matching
a video= argument over calculating our own timings for the user specified
mode using CVT or GTF.

But userspace code which is auto-configuring the mode may want to know that
the user has specified that mode on the kernel commandline so that it can
pick that mode over the mode which is marked as DRM_MODE_TYPE_PREFERRED.

This commit sets the DRM_MODE_TYPE_USERDEF flag on the matching mode, just
as we would do on the user-specified mode when no matching probed mode is
found.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200221173313.510235-2-hdegoede@redhat.com
This commit is contained in:
Hans de Goede
2020-02-21 18:33:13 +01:00
committed by Emil Velikov
parent a519f6d03f
commit ebdc02dd4c
2 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/drm_probe_helper.c
View File

@@ -159,6 +159,8 @@ static int drm_helper_probe_add_cmdline_mode(struct drm_connector *connector)
continue;
}
/* Mark the matching mode as being preferred by the user */
mode->type |= DRM_MODE_TYPE_USERDEF;
return 0;
}