[v5 07/13] drm/i915: Write HDR infoframe and send to panel

[Shankar, Uma]

>-----Original Message-----
>From: Sharma, Shashank
>Sent: Friday, March 15, 2019 4:38 PM
>To: Shankar, Uma <uma.shankar at intel.com>; intel-gfx at lists.freedesktop.org; dri-
>devel at lists.freedesktop.org
>Cc: Lankhorst, Maarten <maarten.lankhorst at intel.com>; Syrjala, Ville
><ville.syrjala at intel.com>; emil.l.velikov at gmail.com; brian.starkey at arm.com;
>Liviu.Dudau at arm.com
>Subject: Re: [v5 07/13] drm/i915: Write HDR infoframe and send to panel
>
>
>On 3/11/2019 9:27 AM, 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.
>>
>> Signed-off-by: Uma Shankar <uma.shankar at intel.com>
>> ---
>>   drivers/gpu/drm/i915/intel_drv.h  |  1 +
>>   drivers/gpu/drm/i915/intel_hdmi.c | 33 +++++++++++++++++++++++++++++++++
>>   2 files changed, 34 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_drv.h
>> b/drivers/gpu/drm/i915/intel_drv.h
>> index 58483f8..a5ee124 100644
>> --- a/drivers/gpu/drm/i915/intel_drv.h
>> +++ b/drivers/gpu/drm/i915/intel_drv.h
>> @@ -1037,6 +1037,7 @@ 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 0952475..ea7afa0 100644
>> --- a/drivers/gpu/drm/i915/intel_hdmi.c
>> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
>> @@ -555,6 +555,7 @@ 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) @@ -777,6 +778,30
>> @@ 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 = &crtc_state->infoframes.drm.drm;
>> +	struct hdr_static_metadata *hdr_metadata;
>> +	int ret;
>> +
>
>Don't we need a GEN/monitor check before going ahead with HDR metadata ?

Sure, will add that check.

Regards,
Uma Shankar

>- Shashank
>
>> +	hdr_metadata = (struct hdr_static_metadata *)
>> +			conn_state->hdr_output_metadata_blob_ptr->data;
>> +
>> +	ret = drm_hdmi_infoframe_set_hdr_metadata(frame, hdr_metadata);
>> +	if (ret < 0) {
>> +		DRM_ERROR("couldn't set HDR metadata in infoframe\n");
>> +		return false;
>> +	}
>> +
>> +	crtc_state->infoframes.enable |=
>> +		intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM);
>> +
>> +	return true;
>> +}
>> +
>>   static void g4x_set_infoframes(struct intel_encoder *encoder,
>>   			       bool enable,
>>   			       const struct intel_crtc_state *crtc_state, @@ -1175,6
>> +1200,9 @@ static void hsw_set_infoframes(struct intel_encoder *encoder,
>>   	intel_write_infoframe(encoder, crtc_state,
>>   			      HDMI_INFOFRAME_TYPE_VENDOR,
>>   			      &crtc_state->infoframes.hdmi);
>> +	intel_write_infoframe(encoder, crtc_state,
>> +			      HDMI_INFOFRAME_TYPE_DRM,
>> +			      &crtc_state->infoframes.drm);
>>   }
>>
>>   void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi,
>> bool enable) @@ -2381,6 +2409,11 @@ 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;
>>   }
>>