diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2019-11-18 16:51:30 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2019-12-16 12:13:18 +0100 |
| commit | 4e7a4a6fbdc669c44e6079f9d5eb25673749455f (patch) | |
| tree | a57a8b9358aacedc5b4ad7d07519c4fef882f666 /Documentation/fb/modedb.rst | |
| parent | 7b1cce760afe38b40f0989cdf10b2190dccf9815 (diff) | |
drm/modes: parse_cmdline: Add support for specifying panel_orientation (v2)
Sometimes we want to override a connector's panel_orientation from the
kernel commandline. Either for testing and for special cases, e.g. a kiosk
like setup which uses a TV mounted in portrait mode.
Users can already specify a "rotate" option through a video= kernel cmdline
option. But that only supports 0/180 degrees (see drm_client_modeset TODO)
and only works for in kernel modeset clients, not for userspace kms users.
The "panel-orientation" connector property OTOH does support 90/270 degrees
as it leaves dealing with the rotation up to userspace and this does work
for userspace kms clients (at least those which support this property).
Changes in v2:
-Add missing ':' after @panel_orientation (reported by kbuild test robot)
BugLink: https://gitlab.freedesktop.org/plymouth/plymouth/merge_requests/83
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191118155134.30468-9-hdegoede@redhat.com
Diffstat (limited to 'Documentation/fb/modedb.rst')
| -rw-r--r-- | Documentation/fb/modedb.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/fb/modedb.rst b/Documentation/fb/modedb.rst index 9c4e3fd39e6d..624d08fd2856 100644 --- a/Documentation/fb/modedb.rst +++ b/Documentation/fb/modedb.rst @@ -65,6 +65,9 @@ Valid options are:: - reflect_y (boolean): Perform an axial symmetry on the Y axis - rotate (integer): Rotate the initial framebuffer by x degrees. Valid values are 0, 90, 180 and 270. + - panel_orientation, one of "normal", "upside_down", "left_side_up", or + "right_side_up". For KMS drivers only, this sets the "panel orientation" + property on the kms connector as hint for kms users. ----------------------------------------------------------------------------- |