The component-based encoder(s) used by HDLCD expect the CRTC port
to be set before binding in order to find the right endpoint.
Without this patch, the TDA19988 encoder driver prints a warning
"Falling back to first CRTC".
Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx>
---
drivers/gpu/drm/arm/hdlcd_drv.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index 345c8357b273..d3da87fbd85a 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -297,6 +297,9 @@ static int hdlcd_drm_bind(struct device *dev)
if (ret)
goto err_free;
+ /* Set the CRTC's port so that the encoder component can find it */
+ hdlcd->crtc.port = of_graph_get_port_by_id(dev->of_node, 0);
+
ret = component_bind_all(dev, drm);
if (ret) {
DRM_ERROR("Failed to bind all components\n");
@@ -340,11 +343,14 @@ static int hdlcd_drm_bind(struct device *dev)
}
err_fbdev:
drm_kms_helper_poll_fini(drm);
+ drm_vblank_cleanup(drm);
err_vblank:
pm_runtime_disable(drm->dev);
err_pm_active:
component_unbind_all(dev, drm);
err_unload:
+ of_node_put(hdlcd->crtc.port);
+ hdlcd->crtc.port = NULL;
drm_irq_uninstall(drm);
of_reserved_mem_device_release(drm->dev);
err_free:
@@ -367,6 +373,9 @@ static void hdlcd_drm_unbind(struct device *dev)
}
drm_kms_helper_poll_fini(drm);
component_unbind_all(dev, drm);
+ of_node_put(hdlcd->crtc.port);
+ hdlcd->crtc.port = NULL;
+ drm_vblank_cleanup(drm);
pm_runtime_get_sync(drm->dev);
drm_irq_uninstall(drm);
pm_runtime_put_sync(drm->dev);
--
2.13.0
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