devm_drm_of_get_bridge is capable of looking up the downstream bridge and panel and trying to add a panel bridge if the panel is found.
Replace explicit finding calls with devm_drm_of_get_bridge. Cc: Philipp Zabel <p.za...@pengutronix.de> Cc: Chun-Kuang Hu <chunkuang...@kernel.org> Cc: Linus Walleij <linus.wall...@linaro.org> Signed-off-by: Jagan Teki <ja...@amarulasolutions.com> --- Note: for mcde_dsi child lookups has dependecy with https://patchwork.kernel.org/project/dri-devel/cover/20211207054747.461029-1-ja...@amarulasolutions.com/ drivers/gpu/drm/bridge/analogix/anx7625.c | 13 +------ drivers/gpu/drm/bridge/chipone-icn6211.c | 7 +--- drivers/gpu/drm/bridge/nwl-dsi.c | 18 ++------- drivers/gpu/drm/bridge/nxp-ptn3460.c | 7 +--- drivers/gpu/drm/bridge/parade-ps8622.c | 7 +--- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 15 ++----- drivers/gpu/drm/mcde/mcde_dsi.c | 39 +++---------------- drivers/gpu/drm/mediatek/mtk_dsi.c | 14 ++----- 8 files changed, 18 insertions(+), 102 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index 001fb39d9919..065cc3b041dd 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -1333,8 +1333,6 @@ static int anx7625_parse_dt(struct device *dev, struct anx7625_platform_data *pdata) { struct device_node *np = dev->of_node, *ep0; - struct drm_panel *panel; - int ret; int bus_type, mipi_lanes; anx7625_get_swing_setting(dev, pdata); @@ -1371,16 +1369,7 @@ static int anx7625_parse_dt(struct device *dev, if (of_property_read_bool(np, "analogix,audio-enable")) pdata->audio_en = 1; - ret = drm_of_find_panel_or_bridge(np, 1, 0, &panel, NULL); - if (ret < 0) { - if (ret == -ENODEV) - return 0; - return ret; - } - if (!panel) - return -ENODEV; - - pdata->panel_bridge = devm_drm_panel_bridge_add(dev, panel); + pdata->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); if (IS_ERR(pdata->panel_bridge)) return PTR_ERR(pdata->panel_bridge); DRM_DEV_DEBUG_DRIVER(dev, "get panel node.\n"); diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c index a6151db95586..23c34039ac48 100644 --- a/drivers/gpu/drm/bridge/chipone-icn6211.c +++ b/drivers/gpu/drm/bridge/chipone-icn6211.c @@ -178,7 +178,6 @@ static const struct drm_bridge_funcs chipone_bridge_funcs = { static int chipone_parse_dt(struct chipone *icn) { struct device *dev = icn->dev; - struct drm_panel *panel; int ret; icn->vdd1 = devm_regulator_get_optional(dev, "vdd1"); @@ -214,11 +213,7 @@ static int chipone_parse_dt(struct chipone *icn) return PTR_ERR(icn->enable_gpio); } - ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL); - if (ret) - return ret; - - icn->panel_bridge = devm_drm_panel_bridge_add(dev, panel); + icn->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); if (IS_ERR(icn->panel_bridge)) return PTR_ERR(icn->panel_bridge); diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c index 6becdcdc99fe..f6859dfa6d36 100644 --- a/drivers/gpu/drm/bridge/nwl-dsi.c +++ b/drivers/gpu/drm/bridge/nwl-dsi.c @@ -910,22 +910,10 @@ static int nwl_dsi_bridge_attach(struct drm_bridge *bridge, { struct nwl_dsi *dsi = bridge_to_dsi(bridge); struct drm_bridge *panel_bridge; - struct drm_panel *panel; - int ret; - - ret = drm_of_find_panel_or_bridge(dsi->dev->of_node, 1, 0, &panel, - &panel_bridge); - if (ret) - return ret; - - if (panel) { - panel_bridge = drm_panel_bridge_add(panel); - if (IS_ERR(panel_bridge)) - return PTR_ERR(panel_bridge); - } - if (!panel_bridge) - return -EPROBE_DEFER; + panel_bridge = devm_drm_of_get_bridge(dsi->dev, dsi->dev->of_node, 1, 0); + if (IS_ERR(panel_bridge)) + return PTR_ERR(panel_bridge); return drm_bridge_attach(bridge->encoder, panel_bridge, bridge, flags); } diff --git a/drivers/gpu/drm/bridge/nxp-ptn3460.c b/drivers/gpu/drm/bridge/nxp-ptn3460.c index e941c1132598..1ab91f4e057b 100644 --- a/drivers/gpu/drm/bridge/nxp-ptn3460.c +++ b/drivers/gpu/drm/bridge/nxp-ptn3460.c @@ -263,7 +263,6 @@ static int ptn3460_probe(struct i2c_client *client, struct device *dev = &client->dev; struct ptn3460_bridge *ptn_bridge; struct drm_bridge *panel_bridge; - struct drm_panel *panel; int ret; ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL); @@ -271,11 +270,7 @@ static int ptn3460_probe(struct i2c_client *client, return -ENOMEM; } - ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &panel, NULL); - if (ret) - return ret; - - panel_bridge = devm_drm_panel_bridge_add(dev, panel); + panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0); if (IS_ERR(panel_bridge)) return PTR_ERR(panel_bridge); diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c index 614b19f0f1b7..37b308850b4e 100644 --- a/drivers/gpu/drm/bridge/parade-ps8622.c +++ b/drivers/gpu/drm/bridge/parade-ps8622.c @@ -452,18 +452,13 @@ static int ps8622_probe(struct i2c_client *client, struct device *dev = &client->dev; struct ps8622_bridge *ps8622; struct drm_bridge *panel_bridge; - struct drm_panel *panel; int ret; ps8622 = devm_kzalloc(dev, sizeof(*ps8622), GFP_KERNEL); if (!ps8622) return -ENOMEM; - ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &panel, NULL); - if (ret) - return ret; - - panel_bridge = devm_drm_panel_bridge_add(dev, panel); + panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0); if (IS_ERR(panel_bridge)) return PTR_ERR(panel_bridge); diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 7900da1d4325..eafd1e5e6852 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -315,7 +315,6 @@ static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host, struct dw_mipi_dsi *dsi = host_to_dsi(host); const struct dw_mipi_dsi_plat_data *pdata = dsi->plat_data; struct drm_bridge *bridge; - struct drm_panel *panel; int ret; if (device->lanes > dsi->plat_data->max_data_lanes) { @@ -329,17 +328,9 @@ static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host, dsi->format = device->format; dsi->mode_flags = device->mode_flags; - ret = drm_of_find_panel_or_bridge(host->dev->of_node, 1, 0, - &panel, &bridge); - if (ret) - return ret; - - if (panel) { - bridge = drm_panel_bridge_add_typed(panel, - DRM_MODE_CONNECTOR_DSI); - if (IS_ERR(bridge)) - return PTR_ERR(bridge); - } + bridge = devm_drm_of_get_bridge(dsi->dev, dsi->dev->of_node, 1, 0); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); dsi->panel_bridge = bridge; diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c index 5651734ce977..9371349b8b25 100644 --- a/drivers/gpu/drm/mcde/mcde_dsi.c +++ b/drivers/gpu/drm/mcde/mcde_dsi.c @@ -1073,9 +1073,7 @@ static int mcde_dsi_bind(struct device *dev, struct device *master, struct drm_device *drm = data; struct mcde *mcde = to_mcde(drm); struct mcde_dsi *d = dev_get_drvdata(dev); - struct device_node *child; - struct drm_panel *panel = NULL; - struct drm_bridge *bridge = NULL; + struct drm_bridge *bridge; if (!of_get_available_child_count(dev->of_node)) { dev_info(dev, "unused DSI interface\n"); @@ -1100,37 +1098,10 @@ static int mcde_dsi_bind(struct device *dev, struct device *master, return PTR_ERR(d->lp_clk); } - /* Look for a panel as a child to this node */ - for_each_available_child_of_node(dev->of_node, child) { - panel = of_drm_find_panel(child); - if (IS_ERR(panel)) { - dev_err(dev, "failed to find panel try bridge (%ld)\n", - PTR_ERR(panel)); - panel = NULL; - - bridge = of_drm_find_bridge(child); - if (!bridge) { - dev_err(dev, "failed to find bridge\n"); - return -EINVAL; - } - } - } - if (panel) { - bridge = drm_panel_bridge_add_typed(panel, - DRM_MODE_CONNECTOR_DSI); - if (IS_ERR(bridge)) { - dev_err(dev, "error adding panel bridge\n"); - return PTR_ERR(bridge); - } - dev_info(dev, "connected to panel\n"); - d->panel = panel; - } else if (bridge) { - /* TODO: AV8100 HDMI encoder goes here for example */ - dev_info(dev, "connected to non-panel bridge (unsupported)\n"); - return -ENODEV; - } else { - dev_err(dev, "no panel or bridge\n"); - return -ENODEV; + bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0); + if (IS_ERR(bridge)) { + dev_err(dev, "error to get bridge\n"); + return PTR_ERR(bridge); } d->bridge_out = bridge; diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 5d90d2eb0019..a1b3e1f4b497 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -1004,7 +1004,6 @@ static int mtk_dsi_probe(struct platform_device *pdev) { struct mtk_dsi *dsi; struct device *dev = &pdev->dev; - struct drm_panel *panel; struct resource *regs; int irq_num; int ret; @@ -1021,17 +1020,10 @@ static int mtk_dsi_probe(struct platform_device *pdev) return ret; } - ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, - &panel, &dsi->next_bridge); - if (ret) + dsi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0); + if (IS_ERR(dsi->next_bridge)) { + ret = PTR_ERR(dsi->next_bridge); goto err_unregister_host; - - if (panel) { - dsi->next_bridge = devm_drm_panel_bridge_add(dev, panel); - if (IS_ERR(dsi->next_bridge)) { - ret = PTR_ERR(dsi->next_bridge); - goto err_unregister_host; - } } dsi->driver_data = of_device_get_match_data(dev); -- 2.25.1
