On Sun, Mar 24, 2024 at 08:56:51PM +0200, Abel Vesa wrote:
> Instead of relying on different compatibles for eDP and DP, lookup
> the panel node in devicetree to figure out the connector type and
> then pass on that information to the PHY. External DP doesn't have
> a panel described in DT, therefore, assume it's eDP if panel node
> is present.
>
Reviewed-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
Regards,
Bjorn
> Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
> ---
> drivers/gpu/drm/msm/dp/dp_display.c | 29 ++++++++++++++++++++++++++++-
> 1 file changed, 28 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index c4cb82af5c2f..9169a739cc54 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -726,6 +726,14 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
> if (IS_ERR(phy))
> return PTR_ERR(phy);
>
> + rc = phy_set_mode_ext(phy, PHY_MODE_DP,
> + dp->dp_display.is_edp ? PHY_SUBMODE_EDP : PHY_SUBMODE_DP);
> + if (rc) {
> + DRM_ERROR("failed to set phy submode, rc = %d\n", rc);
> + dp->catalog = NULL;
> + goto error;
> + }
> +
> dp->catalog = dp_catalog_get(dev);
> if (IS_ERR(dp->catalog)) {
> rc = PTR_ERR(dp->catalog);
> @@ -1241,6 +1249,25 @@ static int dp_auxbus_done_probe(struct drm_dp_aux *aux)
> return dp_display_probe_tail(aux->dev);
> }
>
> +static int dp_display_get_connector_type(struct platform_device *pdev,
> + const struct msm_dp_desc *desc)
> +{
> + struct device_node *node = pdev->dev.of_node;
> + struct device_node *aux_bus = of_get_child_by_name(node, "aux-bus");
> + struct device_node *panel = of_get_child_by_name(aux_bus, "panel");
> + int connector_type;
> +
> + if (panel)
> + connector_type = DRM_MODE_CONNECTOR_eDP;
> + else
> + connector_type = DRM_MODE_SUBCONNECTOR_DisplayPort;
> +
> + of_node_put(panel);
> + of_node_put(aux_bus);
> +
> + return connector_type;
> +}
> +
> static int dp_display_probe(struct platform_device *pdev)
> {
> int rc = 0;
> @@ -1263,7 +1290,7 @@ static int dp_display_probe(struct platform_device *pdev)
> dp->dp_display.pdev = pdev;
> dp->name = "drm_dp";
> dp->id = desc->id;
> - dp->dp_display.connector_type = desc->connector_type;
> + dp->dp_display.connector_type = dp_display_get_connector_type(pdev, desc);
> dp->wide_bus_supported = desc->wide_bus_supported;
> dp->dp_display.is_edp =
> (dp->dp_display.connector_type == DRM_MODE_CONNECTOR_eDP);
>
> --
> 2.34.1
>
