drm/amd/display: Do not fill Null packet in the blank period

[Description]
Do not fill Null packet in the blank period for new packet gen
This is based on HW IP team recommended default setting change.
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c

@@ -512,11 +512,12 @@ void enc1_stream_encoder_hdmi_set_stream_attribute(
 	enc1_stream_encoder_set_stream_attribute_helper(enc1, crtc_timing);
 
 	/* setup HDMI engine */
-	REG_UPDATE_5(HDMI_CONTROL,
+	REG_UPDATE_6(HDMI_CONTROL,
 		HDMI_PACKET_GEN_VERSION, 1,
 		HDMI_KEEPOUT_MODE, 1,
 		HDMI_DEEP_COLOR_ENABLE, 0,
 		HDMI_DATA_SCRAMBLE_EN, 0,
+		HDMI_NO_EXTRA_NULL_PACKET_FILLED, 1,
 		HDMI_CLOCK_CHANNEL_RATE, 0);
 
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.h

@@ -189,6 +189,7 @@ struct dcn10_stream_enc_registers {
 	SE_SF(DIG0_HDMI_CONTROL, HDMI_DEEP_COLOR_ENABLE, mask_sh),\
 	SE_SF(DIG0_HDMI_CONTROL, HDMI_DEEP_COLOR_DEPTH, mask_sh),\
 	SE_SF(DIG0_HDMI_CONTROL, HDMI_DATA_SCRAMBLE_EN, mask_sh),\
+	SE_SF(DIG0_HDMI_CONTROL, HDMI_NO_EXTRA_NULL_PACKET_FILLED, mask_sh),\
 	SE_SF(DIG0_HDMI_VBI_PACKET_CONTROL, HDMI_GC_CONT, mask_sh),\
 	SE_SF(DIG0_HDMI_VBI_PACKET_CONTROL, HDMI_GC_SEND, mask_sh),\
 	SE_SF(DIG0_HDMI_VBI_PACKET_CONTROL, HDMI_NULL_SEND, mask_sh),\
@@ -374,6 +375,7 @@ struct dcn10_stream_enc_registers {
 	type HDMI_GC_SEND;\
 	type HDMI_NULL_SEND;\
 	type HDMI_DATA_SCRAMBLE_EN;\
+	type HDMI_NO_EXTRA_NULL_PACKET_FILLED;\
 	type HDMI_AUDIO_INFO_SEND;\
 	type AFMT_AUDIO_INFO_UPDATE;\
 	type HDMI_AUDIO_INFO_LINE;\