Commit 4cb48c44 authored by Jani Nikula's avatar Jani Nikula
Browse files

drm/i915/dsc: clarify DSC support for pipe A on ICL 



The check for cpu_transcoder != TRANSCODER_A is more magic than
necessary, and potentially misleading. Before TGL, DSC is supported on
pipe A if, and only if, it's used with eDP or DSI transcoders. No
functional changes.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: default avatarVandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f00e9d55ce20b256177222588780c660aa587cc3.1576081155.git.jani.nikula@intel.com
parent 0314da78

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

+7 −1
Original line number Diff line number Diff line
@@ -337,7 +337,10 @@ static const struct rc_parameters *get_rc_params(u16 compressed_bpp, 
bool intel_dsc_source_support(struct intel_encoder *encoder,

			      const struct intel_crtc_state *crtc_state)

{

	const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);

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

	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;

	enum pipe pipe = crtc->pipe;



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

		return false;
@@ -347,7 +350,10 @@ bool intel_dsc_source_support(struct intel_encoder *encoder, 
		return true;



	if (INTEL_GEN(i915) >= 10 &&

	    crtc_state->cpu_transcoder != TRANSCODER_A)

	    (pipe != PIPE_A ||

	     (cpu_transcoder == TRANSCODER_EDP ||

	      cpu_transcoder == TRANSCODER_DSI_0 ||

	      cpu_transcoder == TRANSCODER_DSI_1)))

		return true;



	return false;

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