public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

drm/amd/display: Implement VSIF V3 extended refresh rate feature

Browse source 
[Why]
Implement feature of VSIF V3

[How]
Set refresh rate MSB for extended range

Signed-off-by: Reza Amini <Reza.Amini@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Reza Amini 2020-07-09 18:01:22 -04:00 • committed by Alex Deucher
parent a6d64c1ae1
commit 9bc4162665
1 changed files with 82 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

100
drivers/gpu/drm/amd/display/modules/freesync/freesync.c
View file

@ -569,6 +569,12 @@ static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr,
static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
struct dc_info_packet *infopacket)
{
unsigned int min_refresh;
unsigned int max_refresh;
unsigned int fixed_refresh;
unsigned int min_programmed;
unsigned int max_programmed;
/* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */
infopacket->sb[1] = 0x1A;
@ -598,23 +604,29 @@ static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
vrr->state == VRR_STATE_ACTIVE_FIXED)
infopacket->sb[6] |= 0x04;
if (vrr->state == VRR_STATE_ACTIVE_FIXED) {
/* PB7 = FreeSync Minimum refresh rate (Hz) */
infopacket->sb[7] = (unsigned char)((vrr->fixed_refresh_in_uhz + 500000) / 1000000);
/* PB8 = FreeSync Maximum refresh rate (Hz) */
infopacket->sb[8] = (unsigned char)((vrr->fixed_refresh_in_uhz + 500000) / 1000000);
} else if (vrr->state == VRR_STATE_ACTIVE_VARIABLE) {
/* PB7 = FreeSync Minimum refresh rate (Hz) */
infopacket->sb[7] = (unsigned char)((vrr->min_refresh_in_uhz + 500000) / 1000000);
/* PB8 = FreeSync Maximum refresh rate (Hz) */
infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
} else {
// Non-fs case, program nominal range
/* PB7 = FreeSync Minimum refresh rate (Hz) */
infopacket->sb[7] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
/* PB8 = FreeSync Maximum refresh rate (Hz) */
infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
}
min_refresh = (vrr->min_refresh_in_uhz + 500000) / 1000000;
max_refresh = (vrr->max_refresh_in_uhz + 500000) / 1000000;
fixed_refresh = (vrr->fixed_refresh_in_uhz + 500000) / 1000000;
min_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh :
(vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? min_refresh :
max_refresh; // Non-fs case, program nominal range
max_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh :
(vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? max_refresh :
max_refresh;// Non-fs case, program nominal range
/* PB7 = FreeSync Minimum refresh rate (Hz) */
infopacket->sb[7] = min_programmed & 0xFF;
/* PB8 = FreeSync Maximum refresh rate (Hz) */
infopacket->sb[8] = max_programmed & 0xFF;
/* PB11 : MSB FreeSync Minimum refresh rate [Hz] - bits 15:8 */
infopacket->sb[11] = (min_programmed >> 8) & 0xFF;
/* PB12 : MSB FreeSync Maximum refresh rate [Hz] - bits 15:8 */
infopacket->sb[12] = (max_programmed >> 8) & 0xFF;
//FreeSync HDR
infopacket->sb[9] = 0;
@ -733,6 +745,58 @@ static void build_vrr_infopacket_header_v2(enum signal_type signal,
}
}
static void build_vrr_infopacket_header_v3(enum signal_type signal,
struct dc_info_packet *infopacket,
unsigned int *payload_size)
{
unsigned char version;
version = 3;
if (dc_is_hdmi_signal(signal)) {
/* HEADER */
/* HB0 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame)
*/
infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB1 = Version = 0x03 */
infopacket->hb1 = version;
/* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length] */
*payload_size = 0x10;
infopacket->hb2 = *payload_size - 1; //-1 for checksum
} else if (dc_is_dp_signal(signal)) {
/* HEADER */
/* HB0 = Secondary-data Packet ID = 0 - Only non-zero
* when used to associate audio related info packets
*/
infopacket->hb0 = 0x00;
/* HB1 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame)
*/
infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB2 = [Bits 7:0 = Least significant eight bits -
* For INFOFRAME, the value must be 1Bh]
*/
infopacket->hb2 = 0x1B;
/* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2]
* [Bits 1:0 = Most significant two bits = 0x00]
*/
infopacket->hb3 = (version & 0x3F) << 2;
*payload_size = 0x1B;
}
}
static void build_vrr_infopacket_checksum(unsigned int *payload_size,
struct dc_info_packet *infopacket)
{
@ -818,7 +882,7 @@ static void build_vrr_infopacket_v3(enum signal_type signal,
{
unsigned int payload_size = 0;
build_vrr_infopacket_header_v2(signal, infopacket, &payload_size);
build_vrr_infopacket_header_v3(signal, infopacket, &payload_size);
build_vrr_infopacket_data_v3(vrr, infopacket);
build_vrr_infopacket_fs2_data(app_tf, infopacket);