Re: [PATCH v4 31/39] drm/msm/dp: add prepared to manage link-level operations

[Dmitry Baryshkov]

On Fri, Apr 10, 2026 at 05:34:06PM +0800, Yongxing Mou wrote:
> In MST mode, multiple streams share the same DP link. Track a prepared
> state so msm_dp_display_prepare() runs only once per link and repeated
> calls are skipped.
> 
> Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
> Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 34 ++++++++++++++++++++++++++--------
>  drivers/gpu/drm/msm/dp/dp_display.h |  1 +
>  2 files changed, 27 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h
> index 5f3ef295d710..bda76319c459 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.h
> +++ b/drivers/gpu/drm/msm/dp/dp_display.h
> @@ -22,6 +22,7 @@ struct msm_dp {
>  	bool mst_active;
>  	unsigned int connector_type;
>  	bool is_edp;
> +	bool prepared;

link_ready

>  
>  	struct msm_dp_audio *msm_dp_audio;
>  	bool psr_supported;
> 
> -- 
> 2.43.0
> 

-- 
With best wishes
Dmitry