From: Bayan Zabihiyan <Bayan.Zabihiyan@xxxxxxx>
Modify freesync module to build VTEM infopackets when in HdmiVRR mode
Signed-off-by: Bayan Zabihiyan <Bayan.Zabihiyan@xxxxxxx>
Reviewed-by: Jun Lei <Jun.Lei@xxxxxxx>
Acked-by: Leo Li <sunpeng.li@xxxxxxx>
---
.../drm/amd/display/modules/freesync/freesync.c | 94 ++++++++++++++++++++--
.../gpu/drm/amd/display/modules/inc/mod_freesync.h | 2 +-
.../gpu/drm/amd/display/modules/inc/mod_shared.h | 3 +-
3 files changed, 92 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index d967ac0..94a84bc 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -461,6 +461,26 @@ bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync,
return false;
}
+static void build_vrr_infopacket_header_vtem(enum signal_type signal,
+ struct dc_info_packet *infopacket)
+{
+ // HEADER
+
+ // HB0, HB1, HB2 indicates PacketType VTEMPacket
+ infopacket->hb0 = 0x7F;
+ infopacket->hb1 = 0xC0;
+ infopacket->hb2 = 0x00;
+ /* HB3 Bit Fields
+ * Reserved :1 = 0
+ * Sync :1 = 0
+ * VFR :1 = 1
+ * Ds_Type :2 = 0
+ * End :1 = 0
+ * New :1 = 0
+ */
+ infopacket->hb3 = 0x20;
+}
+
static void build_vrr_infopacket_header_v1(enum signal_type signal,
struct dc_info_packet *infopacket,
unsigned int *payload_size)
@@ -559,6 +579,54 @@ static void build_vrr_infopacket_header_v2(enum signal_type signal,
}
}
+static void build_vrr_vtem_infopacket_data(const struct dc_stream_state *stream,
+ const struct mod_vrr_params *vrr,
+ struct dc_info_packet *infopacket)
+{
+ /* dc_info_packet to VtemPacket Translation of Bit-fields,
+ * SB[6]
+ * unsigned char VRR_EN :1
+ * unsigned char M_CONST :1
+ * unsigned char Reserved2 :2
+ * unsigned char FVA_Factor_M1 :4
+ * SB[7]
+ * unsigned char Base_Vfront :8
+ * SB[8]
+ * unsigned char Base_Refresh_Rate_98 :2
+ * unsigned char RB :1
+ * unsigned char Reserved3 :5
+ * SB[9]
+ * unsigned char Base_RefreshRate_07 :8
+ */
+ unsigned int fieldRateInHz;
+
+ if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
+ vrr->state == VRR_STATE_ACTIVE_FIXED){
+ infopacket->sb[6] |= 0x80; //VRR_EN Bit = 1
+ } else {
+ infopacket->sb[6] &= 0x7F; //VRR_EN Bit = 0
+ }
+
+ if (!stream->timing.vic) {
+ infopacket->sb[7] = stream->timing.v_front_porch;
+
+ /* TODO: In dal2, we check mode flags for a reduced blanking timing.
+ * Need a way to relay that information to this function.
+ * if("ReducedBlanking")
+ * {
+ * infopacket->sb[8] |= 0x20; //Set 3rd bit to 1
+ * }
+ */
+ fieldRateInHz = (stream->timing.pix_clk_100hz * 100)/
+ (stream->timing.h_total * stream->timing.v_total);
+
+ infopacket->sb[8] |= ((fieldRateInHz & 0x300) >> 2);
+ infopacket->sb[9] |= fieldRateInHz & 0xFF;
+
+ }
+ infopacket->valid = true;
+}
+
static void build_vrr_infopacket_data(const struct mod_vrr_params *vrr,
struct dc_info_packet *infopacket)
{
@@ -672,6 +740,19 @@ static void build_vrr_infopacket_v2(enum signal_type signal,
infopacket->valid = true;
}
+static void build_vrr_infopacket_vtem(const struct dc_stream_state *stream,
+ const struct mod_vrr_params *vrr,
+ struct dc_info_packet *infopacket)
+{
+ //VTEM info packet for HdmiVrr
+
+ //VTEM Packet is structured differently
+ build_vrr_infopacket_header_vtem(stream->signal, infopacket);
+ build_vrr_vtem_infopacket_data(stream, vrr, infopacket);
+
+ infopacket->valid = true;
+}
+
void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
const struct dc_stream_state *stream,
const struct mod_vrr_params *vrr,
@@ -679,18 +760,21 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
const enum color_transfer_func *app_tf,
struct dc_info_packet *infopacket)
{
- /* SPD info packet for FreeSync */
-
- /* Check if Freesync is supported. Return if false. If true,
+ /* SPD info packet for FreeSync
+ * VTEM info packet for HdmiVRR
+ * Check if Freesync is supported. Return if false. If true,
* set the corresponding bit in the info packet
*/
- if (!vrr->supported || !vrr->send_vsif)
+ if (!vrr->supported || (!vrr->send_info_frame && packet_type != PACKET_TYPE_VTEM))
return;
switch (packet_type) {
case PACKET_TYPE_FS2:
build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket);
break;
+ case PACKET_TYPE_VTEM:
+ build_vrr_infopacket_vtem(stream, vrr, infopacket);
+ break;
case PACKET_TYPE_VRR:
case PACKET_TYPE_FS1:
default:
@@ -739,7 +823,7 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync,
return;
in_out_vrr->state = in_config->state;
- in_out_vrr->send_vsif = in_config->vsif_supported;
+ in_out_vrr->send_info_frame = in_config->vsif_supported;
if (in_config->state == VRR_STATE_UNSUPPORTED) {
in_out_vrr->state = VRR_STATE_UNSUPPORTED;
diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
index 949a8b6..4222e40 100644
--- a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
@@ -104,7 +104,7 @@ struct mod_vrr_params_fixed_refresh {
struct mod_vrr_params {
bool supported;
- bool send_vsif;
+ bool send_info_frame;
enum mod_vrr_state state;
uint32_t min_refresh_in_uhz;
diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_shared.h b/drivers/gpu/drm/amd/display/modules/inc/mod_shared.h
index 1bd02c0..b711e7e 100644
--- a/drivers/gpu/drm/amd/display/modules/inc/mod_shared.h
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_shared.h
@@ -41,7 +41,8 @@ enum color_transfer_func {
enum vrr_packet_type {
PACKET_TYPE_VRR,
PACKET_TYPE_FS1,
- PACKET_TYPE_FS2
+ PACKET_TYPE_FS2,
+ PACKET_TYPE_VTEM
};
--
2.7.4
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