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: Linus Walleij linus.walleij@linaro.org Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- Changes for v2: - split the patch
drivers/gpu/drm/mcde/mcde_dsi.c | 39 +++++---------------------------- 1 file changed, 5 insertions(+), 34 deletions(-)
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;