Applied to mediatek-drm-next [1]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next Regards, Chun-Kuang. Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx> 於 2021年3月13日 週六 下午5:43寫道： > > While updating config, the irq would occur and get the partial > config, so use variable config_updating to make updating atomic. > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx> > --- > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 19 ++++++++++++------- > 1 file changed, 12 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > index 8b0de90156c6..870f66210848 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > @@ -61,6 +61,7 @@ struct mtk_drm_crtc { > > /* lock for display hardware access */ > struct mutex hw_lock; > + bool config_updating; > }; > > struct mtk_crtc_state { > @@ -97,7 +98,7 @@ static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc) > static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc) > { > drm_crtc_handle_vblank(&mtk_crtc->base); > - if (mtk_crtc->pending_needs_vblank) { > + if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank) { > mtk_drm_crtc_finish_page_flip(mtk_crtc); > mtk_crtc->pending_needs_vblank = false; > } > @@ -425,7 +426,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc, > } > } > > -static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > +static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc, > + bool needs_vblank) > { > #if IS_REACHABLE(CONFIG_MTK_CMDQ) > struct cmdq_pkt *cmdq_handle; > @@ -436,6 +438,10 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > int i; > > mutex_lock(&mtk_crtc->hw_lock); > + mtk_crtc->config_updating = true; > + if (needs_vblank) > + mtk_crtc->pending_needs_vblank = true; > + > for (i = 0; i < mtk_crtc->layer_nr; i++) { > struct drm_plane *plane = &mtk_crtc->planes[i]; > struct mtk_plane_state *plane_state; > @@ -472,6 +478,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle); > } > #endif > + mtk_crtc->config_updating = false; > mutex_unlock(&mtk_crtc->hw_lock); > } > > @@ -532,7 +539,7 @@ void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane, > return; > > plane_helper_funcs->atomic_update(plane, new_state); > - mtk_drm_crtc_hw_config(mtk_crtc); > + mtk_drm_crtc_update_config(mtk_crtc, false); > } > > static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc, > @@ -582,7 +589,7 @@ static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc, > } > mtk_crtc->pending_planes = true; > > - mtk_drm_crtc_hw_config(mtk_crtc); > + mtk_drm_crtc_update_config(mtk_crtc, false); > /* Wait for planes to be disabled */ > drm_crtc_wait_one_vblank(crtc); > > @@ -618,14 +625,12 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc, > struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); > int i; > > - if (mtk_crtc->event) > - mtk_crtc->pending_needs_vblank = true; > if (crtc->state->color_mgmt_changed) > for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) { > mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state); > mtk_ddp_ctm_set(mtk_crtc->ddp_comp[i], crtc->state); > } > - mtk_drm_crtc_hw_config(mtk_crtc); > + mtk_drm_crtc_update_config(mtk_crtc, !!mtk_crtc->event); > } > > static const struct drm_crtc_funcs mtk_crtc_funcs = { > -- > 2.17.1 > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
