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Subject[PATCH v5 05/17] drm/i915/display: Add handling for new "active bpc" property
Date
This commit implements the "active bpc" drm property for the Intel GPU
driver.

Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 19 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_dp.c | 7 +++++--
drivers/gpu/drm/i915/display/intel_dp_mst.c | 5 +++++
drivers/gpu/drm/i915/display/intel_hdmi.c | 4 +++-
4 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 6be1b31af07b..1b63d1404d06 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10839,6 +10839,9 @@ static int intel_atomic_commit(struct drm_device *dev,
{
struct intel_atomic_state *state = to_intel_atomic_state(_state);
struct drm_i915_private *dev_priv = to_i915(dev);
+ struct drm_connector *connector;
+ struct drm_connector_state *new_conn_state;
+ int i;
int ret = 0;

state->wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
@@ -10907,6 +10910,22 @@ static int intel_atomic_commit(struct drm_device *dev,
intel_shared_dpll_swap_state(state);
intel_atomic_track_fbs(state);

+ /* Extract information from crtc to communicate it to userspace as connector properties */
+ for_each_new_connector_in_state(&state->base, connector, new_conn_state, i) {
+ struct intel_crtc *crtc = to_intel_crtc(new_conn_state->crtc);
+
+ if (crtc) {
+ struct intel_crtc_state *new_crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ drm_connector_set_active_bpc_property(connector,
+ new_crtc_state->dsc.compression_enable ?
+ new_crtc_state->dsc.compressed_bpp / 3 :
+ new_crtc_state->pipe_bpp / 3);
+ } else
+ drm_connector_set_active_bpc_property(connector, 0);
+ }
+
drm_atomic_state_get(&state->base);
INIT_WORK(&state->base.commit_work, intel_atomic_commit_work);

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 6cc03b9e4321..815bc313b954 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4688,10 +4688,13 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
intel_attach_force_audio_property(connector);

intel_attach_broadcast_rgb_property(connector);
- if (HAS_GMCH(dev_priv))
+ if (HAS_GMCH(dev_priv)) {
drm_connector_attach_max_bpc_property(connector, 6, 10);
- else if (DISPLAY_VER(dev_priv) >= 5)
+ drm_connector_attach_active_bpc_property(connector, 6, 10);
+ } else if (DISPLAY_VER(dev_priv) >= 5) {
drm_connector_attach_max_bpc_property(connector, 6, 12);
+ drm_connector_attach_active_bpc_property(connector, 6, 12);
+ }

/* Register HDMI colorspace for case of lspcon */
if (intel_bios_is_lspcon_present(dev_priv, port)) {
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index b170e272bdee..16bfc59570a5 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -851,6 +851,11 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
if (connector->max_bpc_property)
drm_connector_attach_max_bpc_property(connector, 6, 12);

+ connector->active_bpc_property =
+ intel_dp->attached_connector->base.active_bpc_property;
+ if (connector->active_bpc_property)
+ drm_connector_attach_active_bpc_property(connector, 6, 12);
+
return connector;

err:
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 7e51c98c475e..9160e21ac9d6 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2513,8 +2513,10 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
if (DISPLAY_VER(dev_priv) >= 10)
drm_connector_attach_hdr_output_metadata_property(connector);

- if (!HAS_GMCH(dev_priv))
+ if (!HAS_GMCH(dev_priv)) {
drm_connector_attach_max_bpc_property(connector, 8, 12);
+ drm_connector_attach_active_bpc_property(connector, 8, 12);
+ }
}

/*
--
2.25.1
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