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
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