From 37aa2243ff4985c0bdf309bf951f2cdd680fbe5c Mon Sep 17 00:00:00 2001 From: Alastair Bridgewater Date: Tue, 11 Apr 2017 13:11:24 -0400 Subject: [PATCH] drm/nouveau: Handle frame-packing mode geometry and timing effects Frame-packing modes add an extra vtotal raster lines to each frame above and beyond what the basic mode description calls for. Account for this during scaler configuration (possibly a bit of a hack), during CRTC configuration (clearly not a hack), and when checking that a mode is valid for a given connector (cribbed from the i915 driver). Signed-off-by: Alastair Bridgewater Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_connector.c | 3 +++ drivers/gpu/drm/nouveau/nv50_display.c | 21 ++++++++++++++------- 2 files changed, 17 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index f802bcd94457..9a91e79158be 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -1045,6 +1045,9 @@ nouveau_connector_mode_valid(struct drm_connector *connector, return MODE_BAD; } + if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING) + clock *= 2; + if (clock < min_clock) return MODE_CLOCK_LOW; diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 0f817a6b1650..36d0cf891eea 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1967,6 +1967,7 @@ nv50_head_atomic_check_view(struct nv50_head_atom *armh, struct drm_display_mode *umode = &asyh->state.mode; int mode = asyc->scaler.mode; struct edid *edid; + int umode_vdisplay, omode_hdisplay, omode_vdisplay; if (connector->edid_blob_ptr) edid = (struct edid *)connector->edid_blob_ptr->data; @@ -1981,12 +1982,18 @@ nv50_head_atomic_check_view(struct nv50_head_atom *armh, mode = DRM_MODE_SCALE_FULLSCREEN; } + /* For the user-specified mode, we must ignore doublescan and + * the like, but honor frame packing. + */ + umode_vdisplay = umode->vdisplay; + if ((umode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING) + umode_vdisplay += umode->vtotal; asyh->view.iW = umode->hdisplay; - asyh->view.iH = umode->vdisplay; - asyh->view.oW = omode->hdisplay; - asyh->view.oH = omode->vdisplay; - if (omode->flags & DRM_MODE_FLAG_DBLSCAN) - asyh->view.oH *= 2; + asyh->view.iH = umode_vdisplay; + /* For the output mode, we can just use the stock helper. */ + drm_mode_get_hv_timing(omode, &omode_hdisplay, &omode_vdisplay); + asyh->view.oW = omode_hdisplay; + asyh->view.oH = omode_vdisplay; /* Add overscan compensation if necessary, will keep the aspect * ratio the same as the backend mode unless overridden by the @@ -2016,7 +2023,7 @@ nv50_head_atomic_check_view(struct nv50_head_atom *armh, switch (mode) { case DRM_MODE_SCALE_CENTER: asyh->view.oW = min((u16)umode->hdisplay, asyh->view.oW); - asyh->view.oH = min((u16)umode->vdisplay, asyh->view.oH); + asyh->view.oH = min((u16)umode_vdisplay, asyh->view.oH); /* fall-through */ case DRM_MODE_SCALE_ASPECT: if (asyh->view.oH < asyh->view.oW) { @@ -2041,7 +2048,7 @@ nv50_head_atomic_check_mode(struct nv50_head *head, struct nv50_head_atom *asyh) struct nv50_head_mode *m = &asyh->mode; u32 blankus; - drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); + drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V | CRTC_STEREO_DOUBLE); /* * DRM modes are defined in terms of a repeating interval -- 2.20.1