Commit deaaff49 authored by Jani Nikula's avatar Jani Nikula
Browse files

drm/i915/dsc: make DSC source support helper generic 



Move intel_dp_source_supports_dsc() from intel_dp.c as
intel_dsc_source_support() in intel_vdsc.c. The DSC source support is
more about DSC than about DP, and will be needed for DP independent
code.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: default avatarManasi Navare <manasi.d.navare@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6c9f646090913290fb00efd46a4332421bf95930.1575974743.git.jani.nikula@intel.com
parent 2d15f392

drivers/gpu/drm/i915/display/intel_dp.c

+5 −22
Original line number Diff line number Diff line
@@ -1889,32 +1889,15 @@ static bool intel_dp_supports_fec(struct intel_dp *intel_dp, 
		drm_dp_sink_supports_fec(intel_dp->fec_capable);

}



static bool intel_dp_source_supports_dsc(struct intel_dp *intel_dp,

					 const struct intel_crtc_state *pipe_config)

{

	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);



	if (!INTEL_INFO(dev_priv)->display.has_dsc)

		return false;



	/* On TGL, DSC is supported on all Pipes */

	if (INTEL_GEN(dev_priv) >= 12)

		return true;



	if (INTEL_GEN(dev_priv) >= 10 &&

	    pipe_config->cpu_transcoder != TRANSCODER_A)

		return true;



	return false;

}



static bool intel_dp_supports_dsc(struct intel_dp *intel_dp,

				  const struct intel_crtc_state *pipe_config)

				  const struct intel_crtc_state *crtc_state)

{

	if (!intel_dp_is_edp(intel_dp) && !pipe_config->fec_enable)

	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;



	if (!intel_dp_is_edp(intel_dp) && !crtc_state->fec_enable)

		return false;



	return intel_dp_source_supports_dsc(intel_dp, pipe_config) &&

	return intel_dsc_source_support(encoder, crtc_state) &&

		drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd);

}

drivers/gpu/drm/i915/display/intel_vdsc.c

+19 −0
Original line number Diff line number Diff line
@@ -334,6 +334,25 @@ static const struct rc_parameters *get_rc_params(u16 compressed_bpp, 
	return &rc_parameters[row_index][column_index];

}



bool intel_dsc_source_support(struct intel_encoder *encoder,

			      const struct intel_crtc_state *crtc_state)

{

	struct drm_i915_private *i915 = to_i915(encoder->base.dev);



	if (!INTEL_INFO(i915)->display.has_dsc)

		return false;



	/* On TGL, DSC is supported on all Pipes */

	if (INTEL_GEN(i915) >= 12)

		return true;



	if (INTEL_GEN(i915) >= 10 &&

	    crtc_state->cpu_transcoder != TRANSCODER_A)

		return true;



	return false;

}



int intel_dsc_compute_params(struct intel_encoder *encoder,

			     struct intel_crtc_state *pipe_config)

{

drivers/gpu/drm/i915/display/intel_vdsc.h

+4 −0
Original line number Diff line number Diff line
@@ -6,9 +6,13 @@ 
#ifndef __INTEL_VDSC_H__

#define __INTEL_VDSC_H__



#include <linux/types.h>



struct intel_encoder;

struct intel_crtc_state;



bool intel_dsc_source_support(struct intel_encoder *encoder,

			      const struct intel_crtc_state *crtc_state);

void intel_dsc_enable(struct intel_encoder *encoder,

		      const struct intel_crtc_state *crtc_state);

void intel_dsc_disable(const struct intel_crtc_state *crtc_state);

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