[PATCH v4 4/4] drm/amd/display: Set FreeSync state using drm VRR properties
Nicholas Kazlauskas
nicholas.kazlauskas at amd.com
Thu Oct 11 16:39:42 UTC 2018
Support for AMDGPU specific FreeSync properties and ioctls are dropped
from amdgpu_dm in favor of supporting drm variable refresh rate
properties.
The drm vrr_capable property is now attached to any DP/HDMI connector.
Its value is updated accordingly to the connector's FreeSync capabiltiy.
The freesync_enable logic and ioctl control has has been dropped in
favor of utilizing the vrr_enabled on the drm CRTC. This allows for more
fine grained atomic control over which CRTCs should support variable
refresh rate.
To handle state changes for vrr_enabled it was easiest to drop the
forced modeset on freesync_enabled change. This patch now performs the
required stream updates when planes are flipped.
This is done for a few reasons:
(1) VRR stream updates can be done in the fast update path
(2) amdgpu_dm_atomic_check would need to be hacked apart to check
desired variable refresh state and capability before the CRTC
disable pass.
(3) Performing VRR stream updates on-flip is needed for enabling BTR
support.
VRR packets and timing adjustments are now tracked and compared to
previous values sent to the hardware.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 255 +++++++++---------
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 +-
2 files changed, 138 insertions(+), 124 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 6a2342d72742..d5de4b91e144 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1802,72 +1802,6 @@ static void dm_bandwidth_update(struct amdgpu_device *adev)
/* TODO: implement later */
}
-static int amdgpu_notify_freesync(struct drm_device *dev, void *data,
- struct drm_file *filp)
-{
- struct drm_atomic_state *state;
- struct drm_modeset_acquire_ctx ctx;
- struct drm_crtc *crtc;
- struct drm_connector *connector;
- struct drm_connector_state *old_con_state, *new_con_state;
- int ret = 0;
- uint8_t i;
- bool enable = false;
-
- drm_modeset_acquire_init(&ctx, 0);
-
- state = drm_atomic_state_alloc(dev);
- if (!state) {
- ret = -ENOMEM;
- goto out;
- }
- state->acquire_ctx = &ctx;
-
-retry:
- drm_for_each_crtc(crtc, dev) {
- ret = drm_atomic_add_affected_connectors(state, crtc);
- if (ret)
- goto fail;
-
- /* TODO rework amdgpu_dm_commit_planes so we don't need this */
- ret = drm_atomic_add_affected_planes(state, crtc);
- if (ret)
- goto fail;
- }
-
- for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
- struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
- struct drm_crtc_state *new_crtc_state;
- struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
- struct dm_crtc_state *dm_new_crtc_state;
-
- if (!acrtc) {
- ASSERT(0);
- continue;
- }
-
- new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
- dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
-
- dm_new_crtc_state->freesync_enabled = enable;
- }
-
- ret = drm_atomic_commit(state);
-
-fail:
- if (ret == -EDEADLK) {
- drm_atomic_state_clear(state);
- drm_modeset_backoff(&ctx);
- goto retry;
- }
-
- drm_atomic_state_put(state);
-
-out:
- drm_modeset_drop_locks(&ctx);
- drm_modeset_acquire_fini(&ctx);
- return ret;
-}
static const struct amdgpu_display_funcs dm_display_funcs = {
.bandwidth_update = dm_bandwidth_update, /* called unconditionally */
@@ -1881,7 +1815,6 @@ static const struct amdgpu_display_funcs dm_display_funcs = {
dm_crtc_get_scanoutpos,/* called unconditionally */
.add_encoder = NULL, /* VBIOS parsing. DAL does it. */
.add_connector = NULL, /* VBIOS parsing. DAL does it. */
- .notify_freesync = amdgpu_notify_freesync,
};
@@ -2834,7 +2767,8 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc)
state->adjust = cur->adjust;
state->vrr_infopacket = cur->vrr_infopacket;
- state->freesync_enabled = cur->freesync_enabled;
+ state->vrr_supported = cur->vrr_supported;
+ state->freesync_config = cur->freesync_config;
/* TODO Duplicate dc_stream after objects are stream object is flattened */
@@ -3053,8 +2987,6 @@ amdgpu_dm_connector_atomic_duplicate_state(struct drm_connector *connector)
__drm_atomic_helper_connector_duplicate_state(connector, &new_state->base);
new_state->freesync_capable = state->freesync_capable;
- new_state->freesync_enable = state->freesync_enable;
-
return &new_state->base;
}
@@ -3800,6 +3732,11 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
adev->mode_info.underscan_vborder_property,
0);
+ if (connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+ drm_connector_attach_vrr_capable_property(
+ &aconnector->base);
+ }
}
static int amdgpu_dm_i2c_xfer(struct i2c_adapter *i2c_adap,
@@ -4176,6 +4113,77 @@ static void prepare_flip_isr(struct amdgpu_crtc *acrtc)
acrtc->crtc_id);
}
+static void update_freesync_state_on_stream(
+ struct amdgpu_display_manager *dm,
+ struct dm_crtc_state *new_crtc_state,
+ struct dc_stream_state *new_stream)
+{
+ struct mod_vrr_params vrr = {0};
+ struct dc_info_packet vrr_infopacket = {0};
+ struct mod_freesync_config config = new_crtc_state->freesync_config;
+
+ if (!new_stream)
+ return;
+
+ /*
+ * TODO: Determine why min/max totals and vrefresh can be 0 here.
+ * For now it's sufficient to just guard against these conditions.
+ */
+
+ if (!new_stream->timing.h_total || !new_stream->timing.v_total)
+ return;
+
+ if (new_crtc_state->vrr_supported &&
+ config.min_refresh_in_uhz &&
+ config.max_refresh_in_uhz) {
+ config.state = new_crtc_state->base.vrr_enabled ?
+ VRR_STATE_ACTIVE_VARIABLE :
+ VRR_STATE_INACTIVE;
+ } else {
+ config.state = VRR_STATE_UNSUPPORTED;
+ }
+
+ mod_freesync_build_vrr_params(dm->freesync_module,
+ new_stream,
+ &config, &vrr);
+
+ mod_freesync_build_vrr_infopacket(
+ dm->freesync_module,
+ new_stream,
+ &vrr,
+ packet_type_vrr,
+ transfer_func_unknown,
+ &vrr_infopacket);
+
+ new_crtc_state->freesync_timing_changed =
+ (memcmp(&new_crtc_state->adjust,
+ &vrr.adjust,
+ sizeof(vrr.adjust)) != 0);
+
+ new_crtc_state->freesync_vrr_info_changed =
+ (memcmp(&new_crtc_state->vrr_infopacket,
+ &vrr_infopacket,
+ sizeof(vrr_infopacket)) != 0);
+
+ new_crtc_state->adjust = vrr.adjust;
+ new_crtc_state->vrr_infopacket = vrr_infopacket;
+
+ new_stream->adjust = new_crtc_state->adjust;
+ new_stream->vrr_infopacket = vrr_infopacket;
+
+ if (new_crtc_state->freesync_vrr_info_changed)
+ DRM_DEBUG_KMS("VRR packet update: crtc=%u enabled=%d state=%d",
+ new_crtc_state->base.crtc->base.id,
+ (int)new_crtc_state->base.vrr_enabled,
+ (int)vrr.state);
+
+ if (new_crtc_state->freesync_timing_changed)
+ DRM_DEBUG_KMS("VRR timing update: crtc=%u min=%u max=%u\n",
+ new_crtc_state->base.crtc->base.id,
+ vrr.adjust.v_total_min,
+ vrr.adjust.v_total_max);
+}
+
/*
* Executes flip
*
@@ -4197,6 +4205,7 @@ static void amdgpu_dm_do_flip(struct drm_crtc *crtc,
struct dc_flip_addrs addr = { {0} };
/* TODO eliminate or rename surface_update */
struct dc_surface_update surface_updates[1] = { {0} };
+ struct dc_stream_update stream_update = {0};
struct dm_crtc_state *acrtc_state = to_dm_crtc_state(crtc->state);
struct dc_stream_status *stream_status;
@@ -4269,11 +4278,26 @@ static void amdgpu_dm_do_flip(struct drm_crtc *crtc,
}
surface_updates->flip_addr = &addr;
+ if (acrtc_state->stream) {
+ update_freesync_state_on_stream(
+ &adev->dm,
+ acrtc_state,
+ acrtc_state->stream);
+
+ if (acrtc_state->freesync_timing_changed)
+ stream_update.adjust =
+ &acrtc_state->stream->adjust;
+
+ if (acrtc_state->freesync_vrr_info_changed)
+ stream_update.vrr_infopacket =
+ &acrtc_state->stream->vrr_infopacket;
+ }
+
dc_commit_updates_for_stream(adev->dm.dc,
surface_updates,
1,
acrtc_state->stream,
- NULL,
+ &stream_update,
&surface_updates->surface,
state);
@@ -4333,11 +4357,6 @@ static bool commit_planes_to_stream(
stream_update->dst = dc_stream->dst;
stream_update->out_transfer_func = dc_stream->out_transfer_func;
- if (dm_new_crtc_state->freesync_enabled != dm_old_crtc_state->freesync_enabled) {
- stream_update->vrr_infopacket = &dc_stream->vrr_infopacket;
- stream_update->adjust = &dc_stream->adjust;
- }
-
for (i = 0; i < new_plane_count; i++) {
updates[i].surface = plane_states[i];
updates[i].gamma =
@@ -4473,9 +4492,6 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
spin_unlock_irqrestore(&pcrtc->dev->event_lock, flags);
}
- dc_stream_attach->adjust = acrtc_state->adjust;
- dc_stream_attach->vrr_infopacket = acrtc_state->vrr_infopacket;
-
if (false == commit_planes_to_stream(dm->dc,
plane_states_constructed,
planes_count,
@@ -4679,9 +4695,6 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
WARN_ON(!status);
WARN_ON(!status->plane_count);
- dm_new_crtc_state->stream->adjust = dm_new_crtc_state->adjust;
- dm_new_crtc_state->stream->vrr_infopacket = dm_new_crtc_state->vrr_infopacket;
-
/*TODO How it works with MPO ?*/
if (!commit_planes_to_stream(
dm->dc,
@@ -4899,20 +4912,18 @@ static int do_aquire_global_lock(struct drm_device *dev,
return ret < 0 ? ret : 0;
}
-void set_freesync_on_stream(struct amdgpu_display_manager *dm,
- struct dm_crtc_state *new_crtc_state,
- struct dm_connector_state *new_con_state,
- struct dc_stream_state *new_stream)
+static void get_freesync_config_for_crtc(
+ struct dm_crtc_state *new_crtc_state,
+ struct dm_connector_state *new_con_state)
{
struct mod_freesync_config config = {0};
- struct mod_vrr_params vrr = {0};
- struct dc_info_packet vrr_infopacket = {0};
struct amdgpu_dm_connector *aconnector =
to_amdgpu_dm_connector(new_con_state->base.connector);
- if (new_con_state->freesync_capable &&
- new_con_state->freesync_enable) {
- config.state = new_crtc_state->freesync_enabled ?
+ new_crtc_state->vrr_supported = new_con_state->freesync_capable;
+
+ if (new_con_state->freesync_capable) {
+ config.state = new_crtc_state->base.vrr_enabled ?
VRR_STATE_ACTIVE_VARIABLE :
VRR_STATE_INACTIVE;
config.min_refresh_in_uhz =
@@ -4922,19 +4933,18 @@ void set_freesync_on_stream(struct amdgpu_display_manager *dm,
config.vsif_supported = true;
}
- mod_freesync_build_vrr_params(dm->freesync_module,
- new_stream,
- &config, &vrr);
+ new_crtc_state->freesync_config = config;
+}
- mod_freesync_build_vrr_infopacket(dm->freesync_module,
- new_stream,
- &vrr,
- packet_type_fs1,
- NULL,
- &vrr_infopacket);
+static void reset_freesync_config_for_crtc(
+ struct dm_crtc_state *new_crtc_state)
+{
+ new_crtc_state->vrr_supported = false;
- new_crtc_state->adjust = vrr.adjust;
- new_crtc_state->vrr_infopacket = vrr_infopacket;
+ memset(&new_crtc_state->adjust, 0,
+ sizeof(new_crtc_state->adjust));
+ memset(&new_crtc_state->vrr_infopacket, 0,
+ sizeof(new_crtc_state->vrr_infopacket));
}
static int dm_update_crtcs_state(struct amdgpu_display_manager *dm,
@@ -5009,9 +5019,6 @@ static int dm_update_crtcs_state(struct amdgpu_display_manager *dm,
break;
}
- set_freesync_on_stream(dm, dm_new_crtc_state,
- dm_new_conn_state, new_stream);
-
if (dc_is_stream_unchanged(new_stream, dm_old_crtc_state->stream) &&
dc_is_stream_scaling_unchanged(new_stream, dm_old_crtc_state->stream)) {
new_crtc_state->mode_changed = false;
@@ -5020,9 +5027,6 @@ static int dm_update_crtcs_state(struct amdgpu_display_manager *dm,
}
}
- if (dm_old_crtc_state->freesync_enabled != dm_new_crtc_state->freesync_enabled)
- new_crtc_state->mode_changed = true;
-
if (!drm_atomic_crtc_needs_modeset(new_crtc_state))
goto next_crtc;
@@ -5059,6 +5063,8 @@ static int dm_update_crtcs_state(struct amdgpu_display_manager *dm,
dc_stream_release(dm_old_crtc_state->stream);
dm_new_crtc_state->stream = NULL;
+ reset_freesync_config_for_crtc(dm_new_crtc_state);
+
*lock_and_validation_needed = true;
} else {/* Add stream for any updated/enabled CRTC */
@@ -5136,7 +5142,9 @@ static int dm_update_crtcs_state(struct amdgpu_display_manager *dm,
amdgpu_dm_set_ctm(dm_new_crtc_state);
}
-
+ /* Update Freesync settings. */
+ get_freesync_config_for_crtc(dm_new_crtc_state,
+ dm_new_conn_state);
}
return ret;
@@ -5401,12 +5409,9 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
goto fail;
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
- struct dm_crtc_state *dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
- struct dm_crtc_state *dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
-
if (!drm_atomic_crtc_needs_modeset(new_crtc_state) &&
!new_crtc_state->color_mgmt_changed &&
- (dm_old_crtc_state->freesync_enabled == dm_new_crtc_state->freesync_enabled))
+ !new_crtc_state->vrr_enabled)
continue;
if (!new_crtc_state->enable)
@@ -5558,14 +5563,15 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
struct detailed_data_monitor_range *range;
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
- struct dm_connector_state *dm_con_state;
+ struct dm_connector_state *dm_con_state = NULL;
struct drm_device *dev = connector->dev;
struct amdgpu_device *adev = dev->dev_private;
+ bool freesync_capable = false;
if (!connector->state) {
DRM_ERROR("%s - Connector has no state", __func__);
- return;
+ goto update;
}
if (!edid) {
@@ -5575,9 +5581,7 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
amdgpu_dm_connector->max_vfreq = 0;
amdgpu_dm_connector->pixel_clock_mhz = 0;
- dm_con_state->freesync_capable = false;
- dm_con_state->freesync_enable = false;
- return;
+ goto update;
}
dm_con_state = to_dm_connector_state(connector->state);
@@ -5585,10 +5589,10 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
edid_check_required = false;
if (!amdgpu_dm_connector->dc_sink) {
DRM_ERROR("dc_sink NULL, could not add free_sync module.\n");
- return;
+ goto update;
}
if (!adev->dm.freesync_module)
- return;
+ goto update;
/*
* if edid non zero restrict freesync only for dp and edp
*/
@@ -5600,7 +5604,6 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
amdgpu_dm_connector);
}
}
- dm_con_state->freesync_capable = false;
if (edid_check_required == true && (edid->version > 1 ||
(edid->version == 1 && edid->revision > 1))) {
for (i = 0; i < 4; i++) {
@@ -5632,8 +5635,16 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
if (amdgpu_dm_connector->max_vfreq -
amdgpu_dm_connector->min_vfreq > 10) {
- dm_con_state->freesync_capable = true;
+ freesync_capable = true;
}
}
+
+update:
+ if (dm_con_state)
+ dm_con_state->freesync_capable = freesync_capable;
+
+ if (connector->vrr_capable_property)
+ drm_connector_set_vrr_capable_property(connector,
+ freesync_capable);
}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 978b34a5011c..a5aaf8b08968 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -185,7 +185,11 @@ struct dm_crtc_state {
int crc_skip_count;
bool crc_enabled;
- bool freesync_enabled;
+ bool freesync_timing_changed;
+ bool freesync_vrr_info_changed;
+
+ bool vrr_supported;
+ struct mod_freesync_config freesync_config;
struct dc_crtc_timing_adjust adjust;
struct dc_info_packet vrr_infopacket;
};
@@ -207,7 +211,6 @@ struct dm_connector_state {
uint8_t underscan_vborder;
uint8_t underscan_hborder;
bool underscan_enable;
- bool freesync_enable;
bool freesync_capable;
};
--
2.19.1
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