On Mon, Oct 23, 2017 at 09:14:22AM +0200, Hans de Goede wrote: > Apply the "panel orientation" drm connector prop to the primary plane so > that fbcon and fbdev using userspace programs display the right way up. > > Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=94894 > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > Changes in v2: > -New patch in v2 of this patch-set > > Changes in v3: > -Use a rotation member in struct drm_fb_helper_crtc and set that from > drm_setup_crtcs instead of looping over all crtc's to find the right one > later > -Since we now no longer look at rotation quirks directly in the fbcon code, > set fb_info.fbcon_rotate_hint when the panel is not mounted upright and > we cannot use hardware rotation > --- > drivers/gpu/drm/drm_fb_helper.c | 76 +++++++++++++++++++++++++++++++++++++++-- > include/drm/drm_fb_helper.h | 8 +++++ > 2 files changed, 82 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c > index 116d1f1337c7..e0f95f2cc52f 100644 > --- a/drivers/gpu/drm/drm_fb_helper.c > +++ b/drivers/gpu/drm/drm_fb_helper.c > @@ -41,6 +41,7 @@ > #include <drm/drm_atomic.h> > #include <drm/drm_atomic_helper.h> > > +#include "drm_crtc_internal.h" > #include "drm_crtc_helper_internal.h" > > static bool drm_fbdev_emulation = true; > @@ -350,6 +351,7 @@ EXPORT_SYMBOL(drm_fb_helper_debug_leave); > static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool active) > { > struct drm_device *dev = fb_helper->dev; > + struct drm_plane_state *plane_state; > struct drm_plane *plane; > struct drm_atomic_state *state; > int i, ret; > @@ -368,8 +370,6 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ > retry: > plane_mask = 0; > drm_for_each_plane(plane, dev) { > - struct drm_plane_state *plane_state; > - > plane_state = drm_atomic_get_plane_state(state, plane); > if (IS_ERR(plane_state)) { > ret = PTR_ERR(plane_state); > @@ -392,6 +392,11 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ > > for (i = 0; i < fb_helper->crtc_count; i++) { > struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; > + struct drm_plane *primary = mode_set->crtc->primary; > + > + /* Cannot fail as we've already gotten the plane state above */ > + plane_state = drm_atomic_get_new_plane_state(state, primary); > + plane_state->rotation = fb_helper->crtc_info[i].rotation; > > ret = __drm_atomic_helper_set_config(mode_set, state); > if (ret != 0) > @@ -2334,6 +2339,57 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, > return best_score; > } > > +/* > + * This function checks if rotation is necessary because of panel orientation > + * and if it is, if it is supported. > + * If rotation is necessary and supported, its gets set in fb_crtc.rotation. > + * If rotation is necessary but not supported, a DRM_MODE_ROTATE_* flag gets > + * or-ed into fb_helper->rotations. In drm_setup_crtcs_fb() we check if only > + * one bit is set and then we set fb_info.fbcon_rotate_hint to make fbcon do > + * the unsupported rotation. > + */ > +static void drm_setup_crtc_rotation(struct drm_fb_helper *fb_helper, > + struct drm_fb_helper_crtc *fb_crtc, > + struct drm_connector *connector) > +{ > + struct drm_plane *plane = fb_crtc->mode_set.crtc->primary; > + uint64_t valid_mask = 0; > + int i, rotation; > + > + fb_crtc->rotation = DRM_MODE_ROTATE_0; > + > + switch (connector->display_info.panel_orientation) { > + case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP: > + rotation = DRM_MODE_ROTATE_180; > + break; > + case DRM_MODE_PANEL_ORIENTATION_LEFT_UP: > + rotation = DRM_MODE_ROTATE_90; > + break; > + case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP: > + rotation = DRM_MODE_ROTATE_270; > + break; For 90/270 hw rotation you need to flip the coordinates/sizes of the fb. > + default: > + rotation = DRM_MODE_ROTATE_0; > + } > + > + if (rotation == DRM_MODE_ROTATE_0 || !plane->rotation_property) { > + fb_helper->rotations |= rotation; > + return; > + } > + > + for (i = 0; i < plane->rotation_property->num_values; i++) > + valid_mask |= (1ULL << plane->rotation_property->values[i]); This isn't a good enough check for atomic drivers (and not for gen9+ intel hw), since we might expose 90° rotations, but it only works if you have the correct tiling format. For atomic drivers it'd be really good if we could do a TEST_ONLY commit first, and if that fails, fall back to sw rotation. But that poses a bit a chicken&egg with creating the framebuffer (we need one for the TEST_ONLY), so probably a bit too much more for this. And afaiui your quirk list only applies to older stuff. At least add a FIXME meanwhile? In a way we have a FIXME already for multi-pipe, since we don't try to fall back to fewer pipes if the single atomic commit failed. Or maybe just don't use 90/270 hw rotation for now since it seems buggy in your code anyway. > + > + if (!(rotation & valid_mask)) { > + fb_helper->rotations |= rotation; > + return; > + } > + > + fb_crtc->rotation = rotation; > + /* Rotating in hardware, fbcon should not rotate */ > + fb_helper->rotations |= DRM_MODE_ROTATE_0; Wrong bitopt I think. Or you're doing some really funny control logic by oring in another value to hit the default case below which doesn't rotate anything. I think that should be done explicitly, by explicitly setting to rotation to ROTATE_0 instead of this. Same for the check above. > +} > + > static void drm_setup_crtcs(struct drm_fb_helper *fb_helper, > u32 width, u32 height) > { > @@ -2393,6 +2449,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper, > drm_fb_helper_modeset_release(fb_helper, > &fb_helper->crtc_info[i].mode_set); > > + fb_helper->rotations = 0; > drm_fb_helper_for_each_connector(fb_helper, i) { > struct drm_display_mode *mode = modes[i]; > struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; > @@ -2412,6 +2469,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper, > modeset->mode = drm_mode_duplicate(dev, > fb_crtc->desired_mode); > drm_connector_get(connector); > + drm_setup_crtc_rotation(fb_helper, fb_crtc, connector); > modeset->connectors[modeset->num_connectors++] = connector; > modeset->x = offset->x; > modeset->y = offset->y; > @@ -2453,6 +2511,20 @@ static void drm_setup_crtcs_fb(struct drm_fb_helper *fb_helper) > } > } > mutex_unlock(&fb_helper->dev->mode_config.mutex); > + > + switch (fb_helper->rotations) { > + case DRM_MODE_ROTATE_90: > + info->fbcon_rotate_hint = FB_ROTATE_CCW; > + break; > + case DRM_MODE_ROTATE_180: > + info->fbcon_rotate_hint = FB_ROTATE_UD; > + break; > + case DRM_MODE_ROTATE_270: > + info->fbcon_rotate_hint = FB_ROTATE_CW; > + break; > + default: > + info->fbcon_rotate_hint = FB_ROTATE_UR; > + } > } > > /* Note: Drops fb_helper->lock before returning. */ > diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h > index 33fe95927742..4ee834a077a2 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; > + int rotation; > }; > > /** > @@ -158,6 +159,13 @@ struct drm_fb_helper { > struct drm_fb_helper_crtc *crtc_info; > int connector_count; > int connector_info_alloc_count; > + /** > + * @rotations: > + * Bitmask of all rotations requested for panel-orientation which > + * could not be handled in hardware. If only one bit is set > + * fbdev->fbcon_rotate_hint gets set to the requested rotation. > + */ > + int rotations; > /** > * @connector_info: > * > -- > 2.14.2 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
