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Wed, 21 Jan 2015 01:46:58 +0900 (KST) From: Ajay Kumar To: dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH V9 05/14] drm/exynos: dp: support drm_bridge Date: Tue, 20 Jan 2015 22:08:46 +0530 Message-id: <1421771935-31618-6-git-send-email-ajaykumar.rs@samsung.com> X-Mailer: git-send-email 2.2.0 In-reply-to: <1421771935-31618-1-git-send-email-ajaykumar.rs@samsung.com> References: <1421771935-31618-1-git-send-email-ajaykumar.rs@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpjkeLIzCtJLcpLzFFi42JZI2JSo9vUti/E4Mp+JYsD7w+yWGx4s5DZ YtnafywWCx/eZbaYf+Qcq8WVr+/ZLCbdn8BicXnhJVaL3gVX2Sw2Pb7GajHj/D4mi1WHN7Bb zD2Ya/Fz1zwWBz6Pvd8WsHjsnHWX3WPBplKP+93HmTw2L6n36NuyitHj8ya5APYoLpuU1JzM stQifbsErozXzdcYC7YrV1z8P4O5gXGqbBcjJ4eEgInE4+9f2CBsMYkL99YD2VwcQgJLGSV2 /HjPBFN0bvcFZojEdEaJeX1drCAJIYEJTBItL9VBbDYBbYlt02+ygNgiAl2MEtsOqoM0MAv8 YZT4/Gs/I0hCWMBG4srz3WBTWQRUJZqWfQQbxCvgIfHu2HlmiG1yEltuPWIHsTkFPCV2fLgK tcxDYvH6w2BXSAjcYpdYfuQSK8QgAYlvkw8BbeYASshKbDoANUdS4uCKGywTGIUXMDKsYhRN LUguKE5KLzLWK07MLS7NS9dLzs/dxAiMntP/nvXvYLx7wPoQowAHoxIP74tVe0OEWBPLiitz DzGaAm2YyCwlmpwPjNG8knhDYzMjC1MTU2Mjc0szJXHehVI/g4UE0hNLUrNTUwtSi+KLSnNS iw8xMnFwSjUwelT5NGxr/JWlbRdtv8BrdlO6rKun2on9iudtvWe1nM4XXHb1Ttvc+WeEPoT/ W5+deOq/QOtu67+aav7SU6y1lx8417P7j/S8KW0r+f+3aFanzpQTbji+rGj+tNSqqz3Nq483 lC6IqLue4DjBlS/4yYuXe2qPs8ztkf6dfKZ2R23SkRa9F+dylViKMxINtZiLihMBJhAnrZkC AAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrAIsWRmVeSWpSXmKPExsVy+t9jQd2mtn0hBtOeS1gceH+QxWLDm4XM FsvW/mOxWPjwLrPF/CPnWC2ufH3PZjHp/gQWi8sLL7Fa9C64ymax6fE1VosZ5/cxWaw6vIHd Yu7BXIufu+axOPB57P22gMVj56y77B4LNpV63O8+zuSxeUm9R9+WVYwenzfJBbBHNTDaZKQm pqQWKaTmJeenZOal2yp5B8c7x5uaGRjqGlpamCsp5CXmptoqufgE6Lpl5gBdrKRQlphTChQK SCwuVtK3wzQhNMRN1wKmMULXNyQIrsfIAA0krGHMeN18jbFgu3LFxf8zmBsYp8p2MXJySAiY SJzbfYEZwhaTuHBvPVsXIxeHkMB0Rol5fV2sIAkhgQlMEi0v1UFsNgFtiW3Tb7KA2CICXYwS 2w6qgzQwC/xhlPj8az8jSEJYwEbiyvPdTCA2i4CqRNOyj2CDeAU8JN4dOw+1TU5iy61H7CA2 p4CnxI4PV6GWeUgsXn+YeQIj7wJGhlWMoqkFyQXFSem5hnrFibnFpXnpesn5uZsYwbH5TGoH 48oGi0OMAhyMSjy8Dmv3hgixJpYVV+YeYpTgYFYS4WWq2xcixJuSWFmVWpQfX1Sak1p8iNEU 6KqJzFKiyfnAtJFXEm9obGJuamxqaWJhYmapJM6rZN8WIiSQnliSmp2aWpBaBNPHxMEp1cB4 nCH61sazeZ5HraZ4N8sEizQ3fj5z0n128tGczVuv7cz90pWa0td129jtjN/aY9vS9Ja4f016 0x23Xe5Xz7P3Ls9tZt89MZdjkcqPg8yL9BtUmjo8JpR7XuUudpT6cpQhznr+pJnGmU+2vNLu CNTaOcXrtrTZhGMvnAM57julif5/vfHAMslJSizFGYmGWsxFxYkApMttJOMCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150120_084724_603314_1A77E426 X-CRM114-Status: GOOD ( 16.95 ) X-Spam-Score: -5.0 (-----) Cc: kgene.kim@samsung.com, seanpaul@google.com, daniel.vetter@ffwll.ch, jg1.han@samsung.com, inki.dae@samsung.com, thierry.reding@gmail.com, ajaynumb@gmail.com, bhushan.r@samsung.com, prashanth.g@samsung.com, Ajay Kumar X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Modify driver to support drm_bridge. Signed-off-by: Ajay Kumar Signed-off-by: Inki Dae Tested-by: Rahul Sharma Tested-by: Javier Martinez Canillas Tested-by: Gustavo Padovan Tested-by: Sjoerd Simons --- .../devicetree/bindings/video/exynos_dp.txt | 12 +++++++ drivers/gpu/drm/exynos/exynos_dp_core.c | 37 ++++++++++++++++---- drivers/gpu/drm/exynos/exynos_dp_core.h | 1 + 3 files changed, 44 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt index 53dbccf..7a3a9cd 100644 --- a/Documentation/devicetree/bindings/video/exynos_dp.txt +++ b/Documentation/devicetree/bindings/video/exynos_dp.txt @@ -66,6 +66,10 @@ Optional properties for dp-controller: Hotplug detect GPIO. Indicates which GPIO should be used for hotplug detection + -video interfaces: Device node can contain video interface port + nodes according to [1]. + +[1]: Documentation/devicetree/bindings/media/video-interfaces.txt Example: @@ -105,4 +109,12 @@ Board Specific portion: vsync-len = <6>; }; }; + + ports { + port@0 { + dp_out: endpoint { + remote-endpoint = <&bridge_in>; + }; + }; + }; }; diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index 27e3d27..46f1497 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -994,9 +995,19 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = { }; /* returns the number of bridges attached */ -static int exynos_drm_attach_lcd_bridge(struct drm_device *dev, +static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp, struct drm_encoder *encoder) { + int ret; + + encoder->bridge = dp->bridge; + dp->bridge->encoder = encoder; + ret = drm_bridge_attach(encoder->dev, dp->bridge); + if (ret) { + DRM_ERROR("Failed to attach bridge to drm\n"); + return ret; + } + return 0; } @@ -1010,9 +1021,11 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display, dp->encoder = encoder; /* Pre-empt DP connector creation if there's a bridge */ - ret = exynos_drm_attach_lcd_bridge(dp->drm_dev, encoder); - if (ret) - return 0; + if (dp->bridge) { + ret = exynos_drm_attach_lcd_bridge(dp, encoder); + if (!ret) + return 0; + } connector->polled = DRM_CONNECTOR_POLL_HPD; @@ -1219,7 +1232,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data) } } - if (!dp->panel) { + if (!dp->panel && !dp->bridge) { ret = exynos_dp_dt_parse_panel(dp); if (ret) return ret; @@ -1303,7 +1316,7 @@ static const struct component_ops exynos_dp_ops = { static int exynos_dp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *panel_node; + struct device_node *panel_node, *bridge_node, *endpoint; struct exynos_dp_device *dp; int ret; @@ -1329,6 +1342,18 @@ static int exynos_dp_probe(struct platform_device *pdev) return -EPROBE_DEFER; } + endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); + if (endpoint) { + bridge_node = of_graph_get_remote_port_parent(endpoint); + if (bridge_node) { + dp->bridge = of_drm_find_bridge(bridge_node); + of_node_put(bridge_node); + if (!dp->bridge) + return -EPROBE_DEFER; + } else + return -EPROBE_DEFER; + } + ret = component_add(&pdev->dev, &exynos_dp_ops); if (ret) exynos_drm_component_del(&pdev->dev, diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h index 164f171..a4e7996 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.h +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h @@ -153,6 +153,7 @@ struct exynos_dp_device { struct drm_connector connector; struct drm_encoder *encoder; struct drm_panel *panel; + struct drm_bridge *bridge; struct clk *clock; unsigned int irq; void __iomem *reg_base;