drm: omapdrm: displays: Get connector source at connect time
The connector drivers need a handle to the source they are connected to
in order to control the source.
All drivers get that handle at probe time, resulting in probe deferral
when the source hasn't been probed yet. However they don't need the
handle until their connect handler is called.
Move retrieval of the source handle to the connect handler to avoid
probe deferrals.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
index 6716aef..391d803 100644
--- a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
+++ b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c
@@ -51,16 +51,25 @@ struct panel_drv_data {
static int dvic_connect(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
- struct omap_dss_device *in = ddata->in;
+ struct omap_dss_device *in;
int r;
if (omapdss_device_is_connected(dssdev))
return 0;
- r = in->ops.dvi->connect(in, dssdev);
- if (r)
- return r;
+ in = omapdss_of_find_source_for_first_ep(dssdev->dev->of_node);
+ if (IS_ERR(in)) {
+ dev_err(dssdev->dev, "failed to find video source\n");
+ return PTR_ERR(in);
+ }
+ r = in->ops.dvi->connect(in, dssdev);
+ if (r) {
+ omap_dss_put_device(in);
+ return r;
+ }
+
+ ddata->in = in;
return 0;
}
@@ -73,6 +82,9 @@ static void dvic_disconnect(struct omap_dss_device *dssdev)
return;
in->ops.dvi->disconnect(in, dssdev);
+
+ omap_dss_put_device(in);
+ ddata->in = NULL;
}
static int dvic_enable(struct omap_dss_device *dssdev)
@@ -235,25 +247,15 @@ static int dvic_probe_of(struct platform_device *pdev)
{
struct panel_drv_data *ddata = platform_get_drvdata(pdev);
struct device_node *node = pdev->dev.of_node;
- struct omap_dss_device *in;
struct device_node *adapter_node;
struct i2c_adapter *adapter;
- in = omapdss_of_find_source_for_first_ep(node);
- if (IS_ERR(in)) {
- dev_err(&pdev->dev, "failed to find video source\n");
- return PTR_ERR(in);
- }
-
- ddata->in = in;
-
adapter_node = of_parse_phandle(node, "ddc-i2c-bus", 0);
if (adapter_node) {
adapter = of_get_i2c_adapter_by_node(adapter_node);
of_node_put(adapter_node);
if (adapter == NULL) {
dev_err(&pdev->dev, "failed to parse ddc-i2c-bus\n");
- omap_dss_put_device(ddata->in);
return -EPROBE_DEFER;
}
@@ -297,8 +299,6 @@ static int dvic_probe(struct platform_device *pdev)
return 0;
err_reg:
- omap_dss_put_device(ddata->in);
-
i2c_put_adapter(ddata->i2c_adapter);
return r;
@@ -308,15 +308,12 @@ static int __exit dvic_remove(struct platform_device *pdev)
{
struct panel_drv_data *ddata = platform_get_drvdata(pdev);
struct omap_dss_device *dssdev = &ddata->dssdev;
- struct omap_dss_device *in = ddata->in;
omapdss_unregister_display(&ddata->dssdev);
dvic_disable(dssdev);
dvic_disconnect(dssdev);
- omap_dss_put_device(in);
-
i2c_put_adapter(ddata->i2c_adapter);
return 0;