drm/amd/display: Get replay info from VSDB
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>
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@ -10490,6 +10490,41 @@ static bool parse_edid_cea(struct amdgpu_dm_connector *aconnector,
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return ret;
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}
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static int parse_amd_vsdb(struct amdgpu_dm_connector *aconnector,
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struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
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{
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u8 *edid_ext = NULL;
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int i;
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int j = 0;
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if (edid == NULL || edid->extensions == 0)
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return -ENODEV;
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/* Find DisplayID extension */
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for (i = 0; i < edid->extensions; i++) {
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edid_ext = (void *)(edid + (i + 1));
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if (edid_ext[0] == DISPLAYID_EXT)
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break;
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}
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while (j < EDID_LENGTH) {
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struct amd_vsdb_block *amd_vsdb = (struct amd_vsdb_block *)&edid_ext[j];
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unsigned int ieeeId = (amd_vsdb->ieee_id[2] << 16) | (amd_vsdb->ieee_id[1] << 8) | (amd_vsdb->ieee_id[0]);
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if (ieeeId == HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_IEEE_REGISTRATION_ID &&
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amd_vsdb->version == HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_VERSION_3) {
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vsdb_info->replay_mode = (amd_vsdb->feature_caps & AMD_VSDB_VERSION_3_FEATURECAP_REPLAYMODE) ? true : false;
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vsdb_info->amd_vsdb_version = HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_VERSION_3;
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DRM_DEBUG_KMS("Panel supports Replay Mode: %d\n", vsdb_info->replay_mode);
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return true;
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}
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j++;
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}
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return false;
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}
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static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector,
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struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
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{
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@ -10625,6 +10660,14 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
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freesync_capable = true;
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}
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}
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parse_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
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if (vsdb_info.replay_mode) {
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amdgpu_dm_connector->vsdb_info.replay_mode = vsdb_info.replay_mode;
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amdgpu_dm_connector->vsdb_info.amd_vsdb_version = vsdb_info.amd_vsdb_version;
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amdgpu_dm_connector->as_type = ADAPTIVE_SYNC_TYPE_EDP;
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}
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} else if (edid && sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) {
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i = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
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if (i >= 0 && vsdb_info.freesync_supported) {
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@ -51,6 +51,9 @@
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#define AMDGPU_DMUB_NOTIFICATION_MAX 5
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#define HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_IEEE_REGISTRATION_ID 0x00001A
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#define AMD_VSDB_VERSION_3_FEATURECAP_REPLAYMODE 0x40
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#define HDMI_AMD_VENDOR_SPECIFIC_DATA_BLOCK_VERSION_3 0x3
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/*
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#include "include/amdgpu_dal_power_if.h"
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#include "amdgpu_dm_irq.h"
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@ -75,6 +78,12 @@ struct dmub_srv;
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struct dc_plane_state;
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struct dmub_notification;
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struct amd_vsdb_block {
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unsigned char ieee_id[3];
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unsigned char version;
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unsigned char feature_caps;
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};
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struct common_irq_params {
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struct amdgpu_device *adev;
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enum dc_irq_source irq_src;
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@ -609,6 +618,11 @@ struct amdgpu_hdmi_vsdb_info {
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* @max_refresh_rate_hz: FreeSync Maximum Refresh Rate in Hz
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*/
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unsigned int max_refresh_rate_hz;
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/**
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* @replay mode: Replay supported
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*/
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bool replay_mode;
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};
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struct amdgpu_dm_connector {
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@ -46,6 +46,9 @@ static bool link_supports_replay(struct dc_link *link, struct amdgpu_dm_connecto
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if (!state->freesync_capable)
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return false;
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if (!aconnector->vsdb_info.replay_mode)
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return false;
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// Check the eDP version
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if (dpcd_caps->edp_rev < EDP_REVISION_13)
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return false;
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@ -71,6 +74,10 @@ bool amdgpu_dm_setup_replay(struct dc_link *link, struct amdgpu_dm_connector *ac
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struct replay_config pr_config;
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union replay_debug_flags *debug_flags = NULL;
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// For eDP, if Replay is supported, return true to skip checks
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if (link->replay_settings.config.replay_supported)
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return true;
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if (!dc_is_embedded_signal(link->connector_signal))
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return false;
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