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drm/amd/display: Get replay info from VSDB

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We need to make sure that the panel supports replay.

This info is inside the amd vsdb (vendor specific data block). Create a
function to parse the block and read the replay_mode bit.

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha 2023-06-12 14:06:39 -04:00 committed by Alex Deucher
parent 7957ec80ef
commit ec8e59cb4e
3 changed files with 64 additions and 0 deletions
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43
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -10490,6 +10490,41 @@ static bool parse_edid_cea(struct amdgpu_dm_connector *aconnector,
return ret;
}
static int parse_amd_vsdb(struct amdgpu_dm_connector *aconnector,
struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
{
u8 *edid_ext = NULL;
int i;
int j = 0;
if (edid == NULL || edid->extensions == 0)
return -ENODEV;
/* Find DisplayID extension */
for (i = 0; i < edid->extensions; i++) {
edid_ext = (void *)(edid + (i + 1));
if (edid_ext[0] == DISPLAYID_EXT)
break;
}
while (j < EDID_LENGTH) {
struct amd_vsdb_block *amd_vsdb = (struct amd_vsdb_block *)&edid_ext[j];
unsigned int ieeeId = (amd_vsdb->ieee_id[2] << 16) | (amd_vsdb->ieee_id[1] << 8) | (amd_vsdb->ieee_id[0]);
if (ieeeId == HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_IEEE_REGISTRATION_ID &&
amd_vsdb->version == HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_VERSION_3) {
vsdb_info->replay_mode = (amd_vsdb->feature_caps & AMD_VSDB_VERSION_3_FEATURECAP_REPLAYMODE) ? true : false;
vsdb_info->amd_vsdb_version = HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_VERSION_3;
DRM_DEBUG_KMS("Panel supports Replay Mode: %d\n", vsdb_info->replay_mode);
return true;
}
j++;
}
return false;
}
static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector,
struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
{
@ -10625,6 +10660,14 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
freesync_capable = true;
}
}
parse_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
if (vsdb_info.replay_mode) {
amdgpu_dm_connector->vsdb_info.replay_mode = vsdb_info.replay_mode;
amdgpu_dm_connector->vsdb_info.amd_vsdb_version = vsdb_info.amd_vsdb_version;
amdgpu_dm_connector->as_type = ADAPTIVE_SYNC_TYPE_EDP;
}
} else if (edid && sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) {
i = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
if (i >= 0 && vsdb_info.freesync_supported) {

14
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
View File

@ -51,6 +51,9 @@
#define AMDGPU_DMUB_NOTIFICATION_MAX 5
#define HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_IEEE_REGISTRATION_ID 0x00001A
#define AMD_VSDB_VERSION_3_FEATURECAP_REPLAYMODE 0x40
#define HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_VERSION_3 0x3
/*
#include "include/amdgpu_dal_power_if.h"
#include "amdgpu_dm_irq.h"
@ -75,6 +78,12 @@ struct dmub_srv;
struct dc_plane_state;
struct dmub_notification;
struct amd_vsdb_block {
unsigned char ieee_id[3];
unsigned char version;
unsigned char feature_caps;
};
struct common_irq_params {
struct amdgpu_device *adev;
enum dc_irq_source irq_src;
@ -609,6 +618,11 @@ struct amdgpu_hdmi_vsdb_info {
* @max_refresh_rate_hz: FreeSync Maximum Refresh Rate in Hz
*/
unsigned int max_refresh_rate_hz;
/**
* @replay mode: Replay supported
*/
bool replay_mode;
};
struct amdgpu_dm_connector {

7
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_replay.c
View File

@ -46,6 +46,9 @@ static bool link_supports_replay(struct dc_link *link, struct amdgpu_dm_connecto
if (!state->freesync_capable)
return false;
if (!aconnector->vsdb_info.replay_mode)
return false;
// Check the eDP version
if (dpcd_caps->edp_rev < EDP_REVISION_13)
return false;
@ -71,6 +74,10 @@ bool amdgpu_dm_setup_replay(struct dc_link *link, struct amdgpu_dm_connector *ac
struct replay_config pr_config;
union replay_debug_flags *debug_flags = NULL;
// For eDP, if Replay is supported, return true to skip checks
if (link->replay_settings.config.replay_supported)
return true;
if (!dc_is_embedded_signal(link->connector_signal))
return false;