On Fri, Jun 04, 2021 at 07:17:23PM +0200, Werner Sembach wrote:
> This commits implements the "active bpc" drm property for the Intel GPU driver.
>
> Signed-off-by: Werner Sembach <wse@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 13 +++++++++++++
> drivers/gpu/drm/i915/display/intel_dp.c | 8 ++++++--
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 4 +++-
> drivers/gpu/drm/i915/display/intel_hdmi.c | 4 +++-
> 4 files changed, 25 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 64e9107d70f7..f7898d9d7438 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -10164,6 +10164,8 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
> struct drm_i915_private *dev_priv = to_i915(dev);
> struct intel_crtc_state *new_crtc_state, *old_crtc_state;
> struct intel_crtc *crtc;
> + struct drm_connector *connector;
> + struct drm_connector_state *new_conn_state;
> u64 put_domains[I915_MAX_PIPES] = {};
> intel_wakeref_t wakeref = 0;
> int i;
> @@ -10324,6 +10326,17 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
> }
> intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
>
> + /* 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 drm_crtc *crtc = new_conn_state->crtc;
> + if (crtc) {
> + new_crtc_state = to_intel_crtc_state(drm_atomic_get_new_crtc_state(&state->base, crtc));
intel_atomic_get_new_crtc_state()
> + new_conn_state->active_bpc = new_crtc_state->pipe_bpp / 3;
> + }
> + else
> + new_conn_state->active_bpc = 0;
> + }
This also seems too late. I think the whole thing should be
done somewhere around the normal swap_state() stuff.
> +
> /*
> * Defer the cleanup of the old state to a separate worker to not
> * impede the current task (userspace for blocking modesets) that
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 642c60f3d9b1..67826ba976ed 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -4671,10 +4671,14 @@ 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 2daa3f67791e..5a1869dc2210 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -844,8 +844,10 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
> */
> connector->max_bpc_property =
> intel_dp->attached_connector->base.max_bpc_property;
> - if (connector->max_bpc_property)
> + if (connector->max_bpc_property) {
> drm_connector_attach_max_bpc_property(connector, 6, 12);
> + drm_connector_attach_active_bpc_property(connector, 6, 12);
> + }
>
> return connector;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index d69f0a6dc26d..8af78b27b6ce 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2463,8 +2463,10 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
> drm_object_attach_property(&connector->base,
> connector->dev->mode_config.hdr_output_metadata_property, 0);
>
> - 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
--
Ville Syrjälä
Intel
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