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drm/rockchip: dw-dp: power on phy when enter mst mode

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Change-Id: I5cf78578784741b031721ef39df578c93606cf86
Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
This commit is contained in:
Zhang Yubing
2024-02-19 20:47:22 +08:00
committed by Tao Huang
parent 430ada503b
commit 9e65f43e46
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/rockchip/dw-dp.c
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@@ -317,6 +317,7 @@ struct dw_dp_link {
struct drm_dp_desc desc;
u8 sink_count;
u8 vsc_sdp_extension_for_colorimetry_supported;
bool sink_support_mst;
};
struct dw_dp_video {
@@ -1567,6 +1568,8 @@ static int dw_dp_link_probe(struct dw_dp *dp)
return -ENODEV;
}
link->sink_support_mst = drm_dp_read_mst_cap(&dp->aux, dp->link.dpcd);
ret = drm_dp_dpcd_readb(&dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST,
&dpcd);
if (ret < 0)
@@ -4094,7 +4097,6 @@ static enum drm_connector_status dw_dp_bridge_detect(struct drm_bridge *bridge)
{
struct dw_dp *dp = bridge_to_dp(bridge);
enum drm_connector_status status = connector_status_connected;
bool sink_support_mst;
if (dp->panel)
drm_panel_prepare(dp->panel);
@@ -4122,11 +4124,13 @@ out:
dev_info(dp->dev, "MST device may have disappeared\n");
dp->is_mst = false;
drm_dp_mst_topology_mgr_set_mst(&dp->mst_mgr, dp->is_mst);
phy_power_off(dp->phy);
}
} else {
sink_support_mst = drm_dp_read_mst_cap(&dp->aux, dp->link.dpcd);
if (sink_support_mst && dp->mst_mgr.cbs) {
if (dp->link.sink_support_mst && dp->mst_mgr.cbs) {
dev_info(dp->dev, "MST device appeared\n");
if (!dp->is_mst)
phy_power_on(dp->phy);
dp->is_mst = true;
drm_dp_mst_topology_mgr_set_mst(&dp->mst_mgr, dp->is_mst);
status = connector_status_disconnected;