On 02/23, Stylon Wang wrote:
> ASSR implementation was already in DC and DM guarded by
> CONFIG_DRM_AMD_DC_HDCP. This patch enables ASSR if display
> declares such support in DPCD.
>
> Signed-off-by: Stylon Wang <stylon.wang@xxxxxxx>
> ---
> drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
> index c1391bfb7a9b..099f43709060 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
> @@ -1669,6 +1669,22 @@ bool perform_link_training_with_retries(
> msleep(delay_dp_power_up_in_ms);
> }
>
> +#ifdef CONFIG_DRM_AMD_DC_HDCP
> + if (panel_mode == DP_PANEL_MODE_EDP) {
> + struct cp_psp *cp_psp = &stream->ctx->cp_psp;
> +
> + if (cp_psp && cp_psp->funcs.enable_assr) {
> + if (!cp_psp->funcs.enable_assr(cp_psp->handle, link)) {
> + /* since eDP implies ASSR on, change panel
> + * mode to disable ASSR
> + */
> + panel_mode = DP_PANEL_MODE_DEFAULT;
> + }
> + } else
> + panel_mode = DP_PANEL_MODE_DEFAULT;
> + }
> +#endif
> +
> dp_set_panel_mode(link, panel_mode);
>
> if (link->aux_access_disabled) {
> --
> 2.25.1
>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
--
Rodrigo Siqueira
https://siqueira.tech
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