DP cable should always connect to DPU during the entire PHY compliance
testing run. Since DP PHY compliance test is executed at irq_hpd event
context, dp_ctrl_off_link_stream() should be used instead of dp_ctrl_off().
dp_ctrl_off() is used for unplug event which is triggered when DP cable is
dis connected.
Changes in V2:
-- add fixes statement
Fixes: f21c8a276c2d ("drm/msm/dp: handle irq_hpd with sink_count = 0 correctly")
Signed-off-by: Kuogee Hsieh <[email protected]>
---
drivers/gpu/drm/msm/dp/dp_ctrl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index caf71fa..27fb0f0 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1530,7 +1530,7 @@ static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl)
* running. Add the global reset just before disabling the
* link clocks and core clocks.
*/
- ret = dp_ctrl_off(&ctrl->dp_ctrl);
+ ret = dp_ctrl_off_link_stream(&ctrl->dp_ctrl);
if (ret) {
DRM_ERROR("failed to disable DP controller\n");
return ret;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
Quoting Kuogee Hsieh (2021-07-13 08:54:01)
> DP cable should always connect to DPU during the entire PHY compliance
> testing run. Since DP PHY compliance test is executed at irq_hpd event
> context, dp_ctrl_off_link_stream() should be used instead of dp_ctrl_off().
> dp_ctrl_off() is used for unplug event which is triggered when DP cable is
> dis connected.
>
> Changes in V2:
> -- add fixes statement
>
> Fixes: f21c8a276c2d ("drm/msm/dp: handle irq_hpd with sink_count = 0 correctly")
>
> Signed-off-by: Kuogee Hsieh <[email protected]>
> ---
Reviewed-by: Stephen Boyd <[email protected]>