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drm/connector: Add helper to compare HDR metadata

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All the drivers that support the HDR metadata property have a similar
function to compare the metadata from one connector state to the next,
and force a mode change if they differ.

All these functions run pretty much the same code, so let's turn it into
an helper that can be shared across those drivers.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210430094451.2145002-2-maxime@cerno.tech
This commit is contained in:
Maxime Ripard
2021-04-30 11:44:48 +02:00
parent e057b52c1d
commit 72921cdf8a
5 changed files with 34 additions and 49 deletions
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23
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -6275,25 +6275,6 @@ static int fill_hdr_info_packet(const struct drm_connector_state *state,
return 0;
}
static bool
is_hdr_metadata_different(const struct drm_connector_state *old_state,
const struct drm_connector_state *new_state)
{
struct drm_property_blob *old_blob = old_state->hdr_output_metadata;
struct drm_property_blob *new_blob = new_state->hdr_output_metadata;
if (old_blob != new_blob) {
if (old_blob && new_blob &&
old_blob->length == new_blob->length)
return memcmp(old_blob->data, new_blob->data,
old_blob->length);
return true;
}
return false;
}
static int
amdgpu_dm_connector_atomic_check(struct drm_connector *conn,
struct drm_atomic_state *state)
@@ -6311,7 +6292,7 @@ amdgpu_dm_connector_atomic_check(struct drm_connector *conn,
if (!crtc)
return 0;
if (is_hdr_metadata_different(old_con_state, new_con_state)) {
if (!drm_connector_atomic_hdr_metadata_equal(old_con_state, new_con_state)) {
struct dc_info_packet hdr_infopacket;
ret = fill_hdr_info_packet(new_con_state, &hdr_infopacket);
@@ -8803,7 +8784,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
dm_old_crtc_state->abm_level;
hdr_changed =
is_hdr_metadata_different(old_con_state, new_con_state);
!drm_connector_atomic_hdr_metadata_equal(old_con_state, new_con_state);
if (!scaling_changed && !abm_changed && !hdr_changed)
continue;