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From 7aae0e3774e0354cd1b096a95d73f739a9347d39 Mon Sep 17 00:00:00 2001
From: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Date: Thu, 17 Jan 2019 13:40:34 -0500
Subject: [PATCH 1205/2940] drm/amd/display: Check that vrefresh is in freesync
range
[Why]
Setting monitor refresh rate below freesync range would cause the
monitor to go blank indefinitely with freesync enabled
[How]
Set vrr_supported and ignore_msa_timing_param according to whether
the refresh rate is above or below the minimum freesync frequency.
Change-Id: I7666040400448749d1fe4061da034825b9eb511f
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Chaudhary Amit Kumar <Chaudharyamit.Kumar@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index e0e5453d9b69..f072a996faee 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3132,9 +3132,6 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
update_stream_signal(stream, sink);
- if (dm_state && dm_state->freesync_capable)
- stream->ignore_msa_timing_param = true;
-
finish:
if (sink && sink->sink_signal == SIGNAL_TYPE_VIRTUAL && aconnector->base.force != DRM_FORCE_ON)
dc_sink_release(sink);
@@ -5482,9 +5479,13 @@ static void get_freesync_config_for_crtc(
struct amdgpu_dm_connector *aconnector =
to_amdgpu_dm_connector(new_con_state->base.connector);
- new_crtc_state->vrr_supported = new_con_state->freesync_capable;
+ struct drm_display_mode *mode = &new_crtc_state->base.mode;
+ new_crtc_state->vrr_supported = new_con_state->freesync_capable &&
+ aconnector->min_vfreq <= drm_mode_vrefresh(mode);
+
+ if (new_crtc_state->vrr_supported) {
+ new_crtc_state->stream->ignore_msa_timing_param = true;
- if (new_con_state->freesync_capable) {
config.state = new_crtc_state->base.vrr_enabled ?
VRR_STATE_ACTIVE_VARIABLE :
VRR_STATE_INACTIVE;
--
2.17.1
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