diff options
| author | Leon Huang <Leon.Huang1@amd.com> | 2026-01-20 11:04:09 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-02-12 23:08:30 +0300 |
| commit | d2ca311a832098423261d19f8b9d8e2fc745073f (patch) | |
| tree | c4a14625974b587a10c98fde92c1f1b36e1e3d19 | |
| parent | 1a38ded4bc8ac09fd029ec656b1e2c98cc0d238c (diff) | |
| download | linux-d2ca311a832098423261d19f8b9d8e2fc745073f.tar.xz | |
drm/amd/display: Check frame skip capability in Sink side
[Why&How]
Frame skip capability is described in AMD VSDB in EDID.
Need to retrieve the cap and determine fr.skipping mode enablement
Reviewed-by: ChunTao Tso <chuntao.tso@amd.com>
Signed-off-by: Leon Huang <Leon.Huang1@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_panel_replay.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_panel_replay.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_panel_replay.c index cc3b44cf7662..4a9e86d32dbb 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_panel_replay.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_panel_replay.c @@ -34,6 +34,7 @@ link->ctx->logger #define DP_SINK_PR_ENABLE_AND_CONFIGURATION 0x37B +#define DP_SINK_ENABLE_FRAME_SKIPPING_MODE_SHIFT (5) static unsigned int dp_pr_calc_num_static_frames(unsigned int vsync_rate_hz) { @@ -89,6 +90,7 @@ static bool dp_setup_panel_replay(struct dc_link *link, const struct dc_stream_s union panel_replay_enable_and_configuration_2 pr_config_2 = { 0 }; union dpcd_alpm_configuration alpm_config; + uint8_t data = 0; replay_context.controllerId = CONTROLLER_ID_UNDEFINED; @@ -186,6 +188,14 @@ static bool dp_setup_panel_replay(struct dc_link *link, const struct dc_stream_s DP_RECEIVER_ALPM_CONFIG, &alpm_config.raw, sizeof(alpm_config.raw)); + + //Enable frame skipping + if (link->replay_settings.config.frame_skip_supported) + data = data | (1 << DP_SINK_ENABLE_FRAME_SKIPPING_MODE_SHIFT); + + dm_helpers_dp_write_dpcd(link->ctx, link, + DP_SINK_PR_ENABLE_AND_CONFIGURATION, + (uint8_t *)&(data), sizeof(uint8_t)); } return true; |