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Mon, 22 Jun 2020 08:01:17 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:b852:bd51:9305:4261]) by smtp.gmail.com with ESMTPSA id h9sm14465808pfe.32.2020.06.22.08.01.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jun 2020 08:01:16 -0700 (PDT) From: Hsin-Yi Wang To: linux-arm-kernel@lists.infradead.org, Chun-Kuang Hu Subject: [PATCH v2] drm/mediatek: check plane visibility in atomic_update Date: Mon, 22 Jun 2020 23:01:09 +0800 Message-Id: <20200622150109.91205-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.27.0.111.gc72c7da667-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200622_160219_977284_FB819F69 X-CRM114-Status: GOOD ( 11.71 ) X-Spam-Score: -2.1 (--) X-Spam-Report: SpamAssassin version 3.4.4 on casper.infradead.org summary: Content analysis details: (-2.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:1042 listed in] [list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Philipp Zabel , David Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, yongqiang.niu@mediatek.com, linux-mediatek@lists.infradead.org, Daniel Vetter , Matthias Brugger , tfiga@chromium.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org Disable the plane if it's not visible. Otherwise mtk_ovl_layer_config() would proceed with invalid plane and we may see vblank timeout. Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.") Signed-off-by: Hsin-Yi Wang Reviewed-by: Chun-Kuang Hu --- v2: Add fixes tag --- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index c2bd683a87c8..74dc71c7f3b6 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -164,6 +164,16 @@ static int mtk_plane_atomic_check(struct drm_plane *plane, true, true); } +static void mtk_plane_atomic_disable(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct mtk_plane_state *state = to_mtk_plane_state(plane->state); + + state->pending.enable = false; + wmb(); /* Make sure the above parameter is set before update */ + state->pending.dirty = true; +} + static void mtk_plane_atomic_update(struct drm_plane *plane, struct drm_plane_state *old_state) { @@ -178,6 +188,9 @@ static void mtk_plane_atomic_update(struct drm_plane *plane, if (!crtc || WARN_ON(!fb)) return; + if (!plane->state->visible) + return mtk_plane_atomic_disable(plane, old_state); + gem = fb->obj[0]; mtk_gem = to_mtk_gem_obj(gem); addr = mtk_gem->dma_addr; @@ -200,16 +213,6 @@ static void mtk_plane_atomic_update(struct drm_plane *plane, state->pending.dirty = true; } -static void mtk_plane_atomic_disable(struct drm_plane *plane, - struct drm_plane_state *old_state) -{ - struct mtk_plane_state *state = to_mtk_plane_state(plane->state); - - state->pending.enable = false; - wmb(); /* Make sure the above parameter is set before update */ - state->pending.dirty = true; -} - static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { .prepare_fb = drm_gem_fb_prepare_fb, .atomic_check = mtk_plane_atomic_check,