On 2021-10-05 03:51, Wayne Lin wrote:
> From: Jimmy Kizito <Jimmy.Kizito@xxxxxxx>
>
> [why & how]
> Add codes for commit "f42ef862fb1f drm/amd/display: Add dynamic
> link encoder selection" to support USB4 DP tunneling feature.
>
Title should be:
"Set DPIA link endpoint type"
Description:
"We will need a way to distinguish physically connected
links and DPIA endpoints."
Harry
> Reviewed-by: Jun Lei <Jun.Lei@xxxxxxx>
> Acked-by: Wayne Lin <Wayne.Lin@xxxxxxx>
> Acked-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
> Signed-off-by: Jimmy Kizito <Jimmy.Kizito@xxxxxxx>
> ---
> drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 ++
> drivers/gpu/drm/amd/display/dc/dc_types.h | 1 +
> 2 files changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
> index 20b4819b73e4..66182b8c217b 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
> @@ -1732,6 +1732,8 @@ static bool dc_link_construct_dpia(struct dc_link *link,
> init_params->connector_index,
> link->connector_signal);
>
> + link->ep_type = DISPLAY_ENDPOINT_USB4_DPIA;
> +
> /* TODO: Initialize link : funcs->link_init */
>
> ddc_service_init_data.ctx = link->ctx;
> diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
> index 3c109c805447..15c353c389d8 100644
> --- a/drivers/gpu/drm/amd/display/dc/dc_types.h
> +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
> @@ -955,6 +955,7 @@ enum dc_psr_version {
> /* Possible values of display_endpoint_id.endpoint */
> enum display_endpoint_type {
> DISPLAY_ENDPOINT_PHY = 0, /* Physical connector. */
> + DISPLAY_ENDPOINT_USB4_DPIA, /* USB4 DisplayPort tunnel. */
> DISPLAY_ENDPOINT_UNKNOWN = -1
> };
>
>
