On Sun, 2017-04-23 at 18:11 +0200, Hans de Goede wrote: > From: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> > > If a connector added through drm_fb_helper_add_one_connector() has > a crtc attached and that crtc has a rotation configured make the > fbdev inherit the crtc's rotation. > > This is useful on e.g. some tablets which have their lcd panel > mounted > upside down, which before this commit would result in the kernel boot > messages switching from being shown the right way up in efifb to > being > shown upside down as soon as a native kms driver loads. > > BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=94894 > Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> > [hdegoede@xxxxxxxxxx: Split the drm/fb-helper bits out of Ville's > "drm/fb-helper: Inherit rotation wip" patch] > Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx> > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > drivers/gpu/drm/drm_fb_helper.c | 51 > ++++++++++++++++++++++++++++++++++++++--- > include/drm/drm_fb_helper.h | 2 ++ > 2 files changed, 50 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/drm_fb_helper.c > b/drivers/gpu/drm/drm_fb_helper.c > index 324a688..c97e00ab 100644 > --- a/drivers/gpu/drm/drm_fb_helper.c > +++ b/drivers/gpu/drm/drm_fb_helper.c > @@ -159,6 +159,8 @@ int drm_fb_helper_add_one_connector(struct > drm_fb_helper *fb_helper, struct drm_ > { > struct drm_fb_helper_connector **temp; > struct drm_fb_helper_connector *fb_helper_connector; > + struct drm_crtc *crtc = connector->encoder ? > + connector->encoder->crtc : NULL; > > if (!drm_fbdev_emulation) > return 0; > @@ -180,6 +182,11 @@ int drm_fb_helper_add_one_connector(struct > drm_fb_helper *fb_helper, struct drm_ > > drm_connector_reference(connector); > fb_helper_connector->connector = connector; > + if (crtc && crtc->primary->state) > + fb_helper_connector->rotation = crtc->primary- > >state->rotation; > + if (!fb_helper_connector->rotation) > + fb_helper_connector->rotation = DRM_ROTATE_0; That's equivalent to: if (fb_helper_connector->rotation = DRM_ROTATE_0) fb_helper_connector->rotation = DRM_ROTATE_0; Maybe: if (crtc && crtc->primary->state) ... else ...->rotation = DRM_ROTATE_0; would be clearer? Or simply omit it if the connector is zero'ed. <snip> > diff --git a/include/drm/drm_fb_helper.h > b/include/drm/drm_fb_helper.h > index 6f5aceb..19fc313 100644 > --- a/include/drm/drm_fb_helper.h > +++ b/include/drm/drm_fb_helper.h > @@ -48,6 +48,7 @@ struct drm_fb_helper_crtc { > struct drm_mode_set mode_set; > struct drm_display_mode *desired_mode; > int x, y; > + uint8_t rotation; > }; > > /** > @@ -159,6 +160,7 @@ struct drm_fb_helper_funcs { > > struct drm_fb_helper_connector { > struct drm_connector *connector; > + uint8_t rotation; In both those cases, I'd add a mention of the type of enum/mask etc. for the rotation, for example: uint8_t rotation; /* DRM_ROTATE_* */ _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
