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SubjectRe: [PATCH v3] drm/msm/dp: make eDP panel as the first connected connector
From
On 06/07/2022 20:24, Kuogee Hsieh wrote:
> Some userspace presumes that the first connected connector is the main
> display, where it's supposed to display e.g. the login screen. For
> laptops, this should be the main panel.
>
> This patch call drm_helper_move_panel_connectors_to_head() after
> drm_bridge_connector_init() to make sure eDP stay at head of
> connected connector list. This fixes unexpected corruption happen
> at eDP panel if eDP is not placed at head of connected connector
> list.
>
> Changes in v2:
> -- move drm_helper_move_panel_connectors_to_head() to
> dpu_kms_drm_obj_init()
>
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index 2b9d931..50ff666 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -763,6 +763,8 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
> if (ret)
> return ret;
>
> + drm_helper_move_panel_connectors_to_head(dev);

This should be in msm_drv.c unless you have a strong reason to have it here.

> +
> num_encoders = 0;
> drm_for_each_encoder(encoder, dev)
> num_encoders++;


--
With best wishes
Dmitry

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