diff options
25 files changed, 85 insertions, 110 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_hdmi.c b/drivers/gpu/drm/arc/arcpgu_hdmi.c index b69c66b4897e..0ce7f398bcff 100644 --- a/drivers/gpu/drm/arc/arcpgu_hdmi.c +++ b/drivers/gpu/drm/arc/arcpgu_hdmi.c @@ -47,10 +47,7 @@ int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np) return ret; /* Link drm_bridge to encoder */ - bridge->encoder = encoder; - encoder->bridge = bridge; - - ret = drm_bridge_attach(drm, bridge); + ret = drm_bridge_attach(encoder, bridge, NULL); if (ret) drm_encoder_cleanup(encoder); diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c index 6119b5085501..e7799b6ee829 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c @@ -230,9 +230,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, of_node_put(np); if (bridge) { - output->encoder.bridge = bridge; - bridge->encoder = &output->encoder; - ret = drm_bridge_attach(dev, bridge); + ret = drm_bridge_attach(&output->encoder, bridge, NULL); if (!ret) return 0; } diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 134bd28337a9..02b97bf64ee4 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1232,12 +1232,10 @@ static int analogix_dp_create_bridge(struct drm_device *drm_dev, dp->bridge = bridge; - dp->encoder->bridge = bridge; bridge->driver_private = dp; - bridge->encoder = dp->encoder; bridge->funcs = &analogix_dp_bridge_funcs; - ret = drm_bridge_attach(drm_dev, bridge); + ret = drm_bridge_attach(dp->encoder, bridge, NULL); if (ret) { DRM_ERROR("failed to attach drm bridge\n"); return -EINVAL; diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c index 235ce7d1583d..f5009ae39b89 100644 --- a/drivers/gpu/drm/bridge/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/dw-hdmi.c @@ -1841,13 +1841,12 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi) hdmi->bridge = bridge; bridge->driver_private = hdmi; bridge->funcs = &dw_hdmi_bridge_funcs; - ret = drm_bridge_attach(drm, bridge); + ret = drm_bridge_attach(encoder, bridge, NULL); if (ret) { DRM_ERROR("Failed to initialize bridge with drm\n"); return -EINVAL; } - encoder->bridge = bridge; hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD; drm_connector_helper_add(&hdmi->connector, diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 0ee052b7c21a..850bd6509ef1 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -26,6 +26,7 @@ #include <linux/mutex.h> #include <drm/drm_bridge.h> +#include <drm/drm_encoder.h> /** * DOC: overview @@ -92,32 +93,53 @@ void drm_bridge_remove(struct drm_bridge *bridge) EXPORT_SYMBOL(drm_bridge_remove); /** - * drm_bridge_attach - associate given bridge to our DRM device + * drm_bridge_attach - attach the bridge to an encoder's chain * - * @dev: DRM device - * @bridge: bridge control structure + * @encoder: DRM encoder + * @bridge: bridge to attach + * @previous: previous bridge in the chain (optional) * - * Called by a kms driver to link one of our encoder/bridge to the given - * bridge. + * Called by a kms driver to link the bridge to an encoder's chain. The previous + * argument specifies the previous bridge in the chain. If NULL, the bridge is + * linked directly at the encoder's output. Otherwise it is linked at the + * previous bridge's output. * - * Note that setting up links between the bridge and our encoder/bridge - * objects needs to be handled by the kms driver itself. + * If non-NULL the previous bridge must be already attached by a call to this + * function. * * RETURNS: * Zero on success, error code on failure */ -int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge) +int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, + struct drm_bridge *previous) { - if (!dev || !bridge) + int ret; + + if (!encoder || !bridge) + return -EINVAL; + + if (previous && (!previous->dev || previous->encoder != encoder)) return -EINVAL; if (bridge->dev) return -EBUSY; - bridge->dev = dev; + bridge->dev = encoder->dev; + bridge->encoder = encoder; + + if (bridge->funcs->attach) { + ret = bridge->funcs->attach(bridge); + if (ret < 0) { + bridge->dev = NULL; + bridge->encoder = NULL; + return ret; + } + } - if (bridge->funcs->attach) - return bridge->funcs->attach(bridge); + if (previous) + previous->next = bridge; + else + encoder->bridge = bridge; return 0; } diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c index 7bae08c2bf0a..ba7be6169339 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -182,9 +182,7 @@ static const struct drm_plane_funcs drm_simple_kms_plane_funcs = { int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe, struct drm_bridge *bridge) { - bridge->encoder = &pipe->encoder; - pipe->encoder.bridge = bridge; - return drm_bridge_attach(pipe->encoder.dev, bridge); + return drm_bridge_attach(&pipe->encoder, bridge, NULL); } EXPORT_SYMBOL(drm_simple_display_pipe_attach_bridge); diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c index 528229faffe4..1ef0be338b85 100644 --- a/drivers/gpu/drm/exynos/exynos_dp.c +++ b/drivers/gpu/drm/exynos/exynos_dp.c @@ -99,7 +99,6 @@ static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data, struct drm_connector *connector) { struct exynos_dp_device *dp = to_dp(plat_data); - struct drm_encoder *encoder = &dp->encoder; int ret; drm_connector_register(connector); @@ -107,9 +106,7 @@ static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data, /* Pre-empt DP connector creation if there's a bridge */ if (dp->ptn_bridge) { - bridge->next = dp->ptn_bridge; - dp->ptn_bridge->encoder = encoder; - ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge); + ret = drm_bridge_attach(&dp->encoder, dp->ptn_bridge, bridge); if (ret) { DRM_ERROR("Failed to attach bridge to drm\n"); bridge->next = NULL; diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index e07cb1fe4860..812e2ec0761d 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1718,10 +1718,8 @@ static int exynos_dsi_bind(struct device *dev, struct device *master, } bridge = of_drm_find_bridge(dsi->bridge_node); - if (bridge) { - encoder->bridge = bridge; - drm_bridge_attach(drm_dev, bridge); - } + if (bridge) + drm_bridge_attach(encoder, bridge, NULL); return mipi_dsi_host_register(&dsi->dsi_host); } diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c index 05a8ee106879..c3651456c963 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c @@ -160,10 +160,7 @@ static int fsl_dcu_attach_endpoint(struct fsl_dcu_drm_device *fsl_dev, if (!bridge) return -ENODEV; - fsl_dev->encoder.bridge = bridge; - bridge->encoder = &fsl_dev->encoder; - - return drm_bridge_attach(fsl_dev->drm, bridge); + return drm_bridge_attach(&fsl_dev->encoder, bridge, NULL); } int fsl_dcu_create_outputs(struct fsl_dcu_drm_device *fsl_dev) diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c index 998452ad0fcb..1737e98bc10a 100644 --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c @@ -709,10 +709,7 @@ static int dsi_bridge_init(struct drm_device *dev, struct dw_dsi *dsi) int ret; /* associate the bridge to dsi encoder */ - encoder->bridge = bridge; - bridge->encoder = encoder; - - ret = drm_bridge_attach(dev, bridge); + ret = drm_bridge_attach(encoder, bridge, NULL); if (ret) { DRM_ERROR("failed to attach external bridge\n"); return ret; diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c index 516d06490465..ec49ea3d8e40 100644 --- a/drivers/gpu/drm/imx/imx-ldb.c +++ b/drivers/gpu/drm/imx/imx-ldb.c @@ -454,10 +454,8 @@ static int imx_ldb_register(struct drm_device *drm, DRM_MODE_ENCODER_LVDS, NULL); if (imx_ldb_ch->bridge) { - imx_ldb_ch->bridge->encoder = encoder; - - imx_ldb_ch->encoder.bridge = imx_ldb_ch->bridge; - ret = drm_bridge_attach(drm, imx_ldb_ch->bridge); + ret = drm_bridge_attach(&imx_ldb_ch->encoder, + imx_ldb_ch->bridge, NULL); if (ret) { DRM_ERROR("Failed to initialize bridge with drm\n"); return ret; diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 8582a83c0d9b..51d9f735c358 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -191,9 +191,7 @@ static int imx_pd_register(struct drm_device *drm, drm_panel_attach(imxpd->panel, &imxpd->connector); if (imxpd->bridge) { - imxpd->bridge->encoder = encoder; - encoder->bridge = imxpd->bridge; - ret = drm_bridge_attach(drm, imxpd->bridge); + ret = drm_bridge_attach(encoder, imxpd->bridge, NULL); if (ret < 0) { dev_err(imxpd->dev, "failed to attach bridge: %d\n", ret); diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 90fb831ef031..3bd3bd688d1a 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -63,6 +63,7 @@ enum mtk_dpi_out_color_format { struct mtk_dpi { struct mtk_ddp_comp ddp_comp; struct drm_encoder encoder; + struct drm_bridge *bridge; void __iomem *regs; struct device *dev; struct clk *engine_clk; @@ -620,8 +621,7 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data) /* Currently DPI0 is fixed to be driven by OVL1 */ dpi->encoder.possible_crtcs = BIT(1); - dpi->encoder.bridge->encoder = &dpi->encoder; - ret = drm_bridge_attach(dpi->encoder.dev, dpi->encoder.bridge); + ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL); if (ret) { dev_err(dev, "Failed to attach bridge: %d\n", ret); goto err_cleanup; @@ -718,9 +718,9 @@ static int mtk_dpi_probe(struct platform_device *pdev) dev_info(dev, "Found bridge node: %s\n", bridge_node->full_name); - dpi->encoder.bridge = of_drm_find_bridge(bridge_node); + dpi->bridge = of_drm_find_bridge(bridge_node); of_node_put(bridge_node); - if (!dpi->encoder.bridge) + if (!dpi->bridge) return -EPROBE_DEFER; comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI); diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 2c42f90809d8..dd71cbb1a622 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -622,26 +622,6 @@ static const struct drm_connector_helper_funcs .get_modes = mtk_dsi_connector_get_modes, }; -static int mtk_drm_attach_bridge(struct drm_bridge *bridge, - struct drm_encoder *encoder) -{ - int ret; - - if (!bridge) - return -ENOENT; - - encoder->bridge = bridge; - bridge->encoder = encoder; - ret = drm_bridge_attach(encoder->dev, bridge); - if (ret) { - DRM_ERROR("Failed to attach bridge to drm\n"); - encoder->bridge = NULL; - bridge->encoder = NULL; - } - - return ret; -} - static int mtk_dsi_create_connector(struct drm_device *drm, struct mtk_dsi *dsi) { int ret; @@ -692,8 +672,10 @@ static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi) dsi->encoder.possible_crtcs = 1; /* If there's a bridge, attach to it and let it create the connector */ - ret = mtk_drm_attach_bridge(dsi->bridge, &dsi->encoder); + ret = drm_bridge_attach(&dsi->encoder, dsi->bridge, NULL); if (ret) { + DRM_ERROR("Failed to attach bridge to drm\n"); + /* Otherwise create our own connector and attach to a panel */ ret = mtk_dsi_create_connector(drm, dsi); if (ret) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 0e8c4d9af340..c26251260b83 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -149,6 +149,7 @@ struct hdmi_audio_param { struct mtk_hdmi { struct drm_bridge bridge; + struct drm_bridge *next_bridge; struct drm_connector conn; struct device *dev; struct phy *phy; @@ -1314,9 +1315,9 @@ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge) return ret; } - if (bridge->next) { - bridge->next->encoder = bridge->encoder; - ret = drm_bridge_attach(bridge->encoder->dev, bridge->next); + if (hdmi->next_bridge) { + ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge, + bridge); if (ret) { dev_err(hdmi->dev, "Failed to attach external bridge: %d\n", ret); @@ -1510,8 +1511,8 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, of_node_put(ep); if (!of_device_is_compatible(remote, "hdmi-connector")) { - hdmi->bridge.next = of_drm_find_bridge(remote); - if (!hdmi->bridge.next) { + hdmi->next_bridge = of_drm_find_bridge(remote); + if (!hdmi->next_bridge) { dev_err(dev, "Waiting for external bridge\n"); of_node_put(remote); return -EPROBE_DEFER; diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index c8d1f19c9a6d..2bd8dad76105 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -579,6 +579,7 @@ struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); struct drm_bridge *bridge = NULL; struct dsi_bridge *dsi_bridge; + struct drm_encoder *encoder; int ret; dsi_bridge = devm_kzalloc(msm_dsi->dev->dev, @@ -590,10 +591,18 @@ struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) dsi_bridge->id = id; + /* + * HACK: we may not know the external DSI bridge device's mode + * flags here. We'll get to know them only when the device + * attaches to the dsi host. For now, assume the bridge supports + * DSI video mode + */ + encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID]; + bridge = &dsi_bridge->base; bridge->funcs = &dsi_mgr_bridge_funcs; - ret = drm_bridge_attach(msm_dsi->dev, bridge); + ret = drm_bridge_attach(encoder, bridge, NULL); if (ret) goto fail; @@ -628,11 +637,7 @@ struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) encoder = msm_dsi->encoders[MSM_DSI_VIDEO_ENCODER_ID]; /* link the internal dsi bridge to the external bridge */ - int_bridge->next = ext_bridge; - /* set the external bridge's encoder as dsi's encoder */ - ext_bridge->encoder = encoder; - - drm_bridge_attach(dev, ext_bridge); + drm_bridge_attach(encoder, ext_bridge, int_bridge); /* * we need the drm_connector created by the external bridge diff --git a/drivers/gpu/drm/msm/edp/edp_bridge.c b/drivers/gpu/drm/msm/edp/edp_bridge.c index 2bc73f82f3f5..931a5c97cccf 100644 --- a/drivers/gpu/drm/msm/edp/edp_bridge.c +++ b/drivers/gpu/drm/msm/edp/edp_bridge.c @@ -106,7 +106,7 @@ struct drm_bridge *msm_edp_bridge_init(struct msm_edp *edp) bridge = &edp_bridge->base; bridge->funcs = &edp_bridge_funcs; - ret = drm_bridge_attach(edp->dev, bridge); + ret = drm_bridge_attach(edp->encoder, bridge, NULL); if (ret) goto fail; diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index bacbd5d8df0e..4e6d1bf27474 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -227,7 +227,7 @@ struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi) bridge = &hdmi_bridge->base; bridge->funcs = &msm_hdmi_bridge_funcs; - ret = drm_bridge_attach(hdmi->dev, bridge); + ret = drm_bridge_attach(hdmi->encoder, bridge, NULL); if (ret) goto fail; diff --git a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c index f9515f53cc5b..c4c5d1abcff8 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c @@ -124,10 +124,7 @@ int rcar_du_hdmienc_init(struct rcar_du_device *rcdu, hdmienc->renc = renc; /* Link the bridge to the encoder. */ - bridge->encoder = encoder; - encoder->bridge = bridge; - - ret = drm_bridge_attach(rcdu->ddev, bridge); + ret = drm_bridge_attach(encoder, bridge, NULL); if (ret) { drm_encoder_cleanup(encoder); return ret; diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c index e8c1ed08a9f7..411dc6ec976e 100644 --- a/drivers/gpu/drm/sti/sti_dvo.c +++ b/drivers/gpu/drm/sti/sti_dvo.c @@ -478,14 +478,13 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data) return err; } - err = drm_bridge_attach(drm_dev, bridge); + err = drm_bridge_attach(encoder, bridge, NULL); if (err) { DRM_ERROR("Failed to attach bridge\n"); return err; } dvo->bridge = bridge; - encoder->bridge = bridge; connector->encoder = encoder; dvo->encoder = encoder; diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c index 96f336dd0e29..66d37d78152a 100644 --- a/drivers/gpu/drm/sti/sti_hda.c +++ b/drivers/gpu/drm/sti/sti_hda.c @@ -707,9 +707,8 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data) bridge->driver_private = hda; bridge->funcs = &sti_hda_bridge_funcs; - drm_bridge_attach(drm_dev, bridge); + drm_bridge_attach(encoder, bridge, NULL); - encoder->bridge = bridge; connector->encoder = encoder; drm_connector = (struct drm_connector *)connector; diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 376b0763c874..f0af1ae82ee9 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -1308,9 +1308,8 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) bridge->driver_private = hdmi; bridge->funcs = &sti_hdmi_bridge_funcs; - drm_bridge_attach(drm_dev, bridge); + drm_bridge_attach(encoder, bridge, NULL); - encoder->bridge = bridge; connector->encoder = encoder; drm_connector = (struct drm_connector *)connector; diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c index f5e86fe7750e..757208f51731 100644 --- a/drivers/gpu/drm/sun4i/sun4i_rgb.c +++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c @@ -208,6 +208,7 @@ int sun4i_rgb_init(struct drm_device *drm) struct sun4i_drv *drv = drm->dev_private; struct sun4i_tcon *tcon = drv->tcon; struct drm_encoder *encoder; + struct drm_bridge *bridge; struct sun4i_rgb *rgb; int ret; @@ -218,8 +219,8 @@ int sun4i_rgb_init(struct drm_device *drm) encoder = &rgb->encoder; tcon->panel = sun4i_tcon_find_panel(tcon->dev->of_node); - encoder->bridge = sun4i_tcon_find_bridge(tcon->dev->of_node); - if (IS_ERR(tcon->panel) && IS_ERR(encoder->bridge)) { + bridge = sun4i_tcon_find_bridge(tcon->dev->of_node); + if (IS_ERR(tcon->panel) && IS_ERR(bridge)) { dev_info(drm->dev, "No panel or bridge found... RGB output disabled\n"); return 0; } @@ -260,16 +261,12 @@ int sun4i_rgb_init(struct drm_device *drm) } } - if (!IS_ERR(encoder->bridge)) { - encoder->bridge->encoder = &rgb->encoder; - - ret = drm_bridge_attach(drm, encoder->bridge); + if (!IS_ERR(bridge)) { + ret = drm_bridge_attach(encoder, bridge, NULL); if (ret) { dev_err(drm->dev, "Couldn't attach our bridge\n"); goto err_cleanup_connector; } - } else { - encoder->bridge = NULL; } return 0; diff --git a/drivers/gpu/drm/tilcdc/tilcdc_external.c b/drivers/gpu/drm/tilcdc/tilcdc_external.c index c67d7cd7d57e..b0dd5e8634ae 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_external.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_external.c @@ -167,10 +167,8 @@ int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge) int ret; priv->external_encoder->possible_crtcs = BIT(0); - priv->external_encoder->bridge = bridge; - bridge->encoder = priv->external_encoder; - ret = drm_bridge_attach(ddev, bridge); + ret = drm_bridge_attach(priv->external_encoder, bridge, NULL); if (ret) { dev_err(ddev->dev, "drm_bridge_attach() failed %d\n", ret); return ret; diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 530a1d6e8cde..94e5ee96b3b5 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -201,7 +201,8 @@ struct drm_bridge { int drm_bridge_add(struct drm_bridge *bridge); void drm_bridge_remove(struct drm_bridge *bridge); struct drm_bridge *of_drm_find_bridge(struct device_node *np); -int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge); +int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, + struct drm_bridge *previous); void drm_bridge_detach(struct drm_bridge *bridge); bool drm_bridge_mode_fixup(struct drm_bridge *bridge, |