On Wed, Dec 2, 2015 at 5:57 AM, Inki Dae inki.dae@samsung.com wrote:
This patch adds of_graph dt binding support for panel device and also keeps the backward compatibility.
i.e., The dts file for Exynos5800 based peach pi board has a panel property so we need to keep the backward compatibility.
Changelog v2:
- return -EINVAL if getting a port node failed.
Signed-off-by: Inki Dae inki.dae@samsung.com
drivers/gpu/drm/exynos/exynos_dp_core.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c index 94f02a0..0b53045 100644 --- a/drivers/gpu/drm/exynos/exynos_dp_core.c +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c @@ -1392,7 +1392,7 @@ 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, *bridge_node, *endpoint;
struct device_node *panel_node = NULL, *bridge_node, *endpoint = NULL; struct exynos_dp_device *dp; int ret;@@ -1403,15 +1403,32 @@ static int exynos_dp_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, dp);
/* This is for the backward compatibility. */ panel_node = of_parse_phandle(dev->of_node, "panel", 0); if (panel_node) { dp->panel = of_drm_find_panel(panel_node); of_node_put(panel_node); if (!dp->panel) return -EPROBE_DEFER;} else {endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);if (endpoint) {panel_node = of_graph_get_remote_port_parent(endpoint);if (panel_node) {dp->panel = of_drm_find_panel(panel_node);of_node_put(panel_node);if (!dp->panel)return -EPROBE_DEFER;} else {DRM_ERROR("no port node for panel device.\n");return -EINVAL;}}
This should be a fairly common sequence, so please make it one. Only which port is the panel should vary.
Rob