On Thu, May 16, 2019 at 07:40:11PM +0530, Uma Shankar wrote:
> Enable writing of HDR metadata infoframe to panel.
> The data will be provid by usersapace compositors, based
> on blending policies and passsed to driver through a blob
> property.
>
> v2: Rebase
>
> v3: Fixed a warning message
>
> v4: Addressed Shashank's review comments
>
> v5: Rebase. Added infoframe calculation in compute config.
>
> v6: Addressed Shashank's review comment. Added HDR metadata
> support from GEN10 onwards as per Shashank's recommendation.
>
> v7: Addressed Shashank's review comments
>
> v8: Added Shashank's RB.
>
> v9: Addressed Ville's review comments.
>
> Signed-off-by: Uma Shankar
> Reviewed-by: Shashank Sharma
> ---
> drivers/gpu/drm/i915/intel_drv.h | 1 +
> drivers/gpu/drm/i915/intel_hdmi.c | 44
> +++
> 2 files changed, 45 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 5258abb..40e2c52 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -910,6 +910,7 @@ struct intel_crtc_state {
> union hdmi_infoframe avi;
> union hdmi_infoframe spd;
> union hdmi_infoframe hdmi;
> + union hdmi_infoframe drm;
> } infoframes;
>
> /* HDMI scrambling status */
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c
> b/drivers/gpu/drm/i915/intel_hdmi.c
> index 92597d8..d3b8e09 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -573,6 +573,7 @@ static u32 hsw_infoframes_enabled(struct intel_encoder
> *encoder,
> HDMI_INFOFRAME_TYPE_AVI,
> HDMI_INFOFRAME_TYPE_SPD,
> HDMI_INFOFRAME_TYPE_VENDOR,
> + HDMI_INFOFRAME_TYPE_DRM,
> };
>
> u32 intel_hdmi_infoframe_enable(unsigned int type)
> @@ -795,6 +796,41 @@ void intel_read_infoframe(struct intel_encoder *encoder,
> return true;
> }
>
> +static bool
> +intel_hdmi_compute_drm_infoframe(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state,
> + struct drm_connector_state *conn_state)
> +{
> + struct hdmi_drm_infoframe *frame = _state->infoframes.drm.drm;
> + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> + int ret;
> +
> + if (!(INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)))
> + return true;
> +
> + if (!crtc_state->has_infoframe)
> + return true;
> +
> + if (!conn_state->hdr_output_metadata ||
> + conn_state->hdr_output_metadata->length == 0)
The core has already done the length check for us. So can be dropped
from here.
> + return true;
> +
> + crtc_state->infoframes.enable |=
> + intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM);
> +
> + ret = drm_hdmi_infoframe_set_hdr_metadata(frame, conn_state);
> + if (ret < 0) {
> + DRM_ERROR("couldn't set HDR metadata in infoframe\n");
Still a user triggreable ERROR.
> + return false;
> + }
> +
> + ret = hdmi_drm_infoframe_check(frame);
> + if (WARN_ON(ret))
> + return false;
> +
> + return true;
> +}
> +
> static void g4x_set_infoframes(struct intel_encoder *encoder,
> bool enable,
> const struct intel_crtc_state *crtc_state,
> @@ -1180,6 +1216,9 @@ static void hsw_set_infoframes(struct intel_encoder
> *encoder,
> intel_write_infoframe(encoder, crtc_state,
> HDMI_INFOFRAME_TYPE_VENDOR,
> _state->infoframes.hdmi);
> + intel_write_infoframe(encoder, crtc_state,
> + HDMI_INFOFRAME_TYPE_DRM,
> + _state->infoframes.drm);
> }
>
> void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
> @@ -2386,6 +2425,11 @@ int intel_hdmi_compute_config(struct intel_encoder
> *encoder,
> return -EINVAL;
> }
>
> + if (!intel_hdmi_compute_drm_infoframe(encoder, pipe_config,
> conn_state)) {
> + DRM_DEBUG_KMS("bad DRM infoframe\n");
> + return -EINVAL;
> + }
> +
> return 0;
> }
>
> --
> 1.9.1
--
Ville Syrjälä
Intel
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