Commit 5bafd85d authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Introduce has_buf_trans_select() 



Add a small helper to determine if DDI_BUF_CTL uses the
DDI_BUF_TRANS_SELECT field, and whether we have the
accompanying DDI_BUF_TRANS table in the hardware.

Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211001130107.1746-3-ville.syrjala@linux.intel.com


Reviewed-by: default avatarImre Deak <imre.deak@intel.com>
parent f820693b

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

+9 −2
Original line number Diff line number Diff line
@@ -92,6 +92,11 @@ static int intel_ddi_hdmi_level(struct intel_encoder *encoder, 
	return level;

}



static bool has_buf_trans_select(struct drm_i915_private *i915)

{

	return DISPLAY_VER(i915) < 10 && !IS_BROXTON(i915);

}



static bool has_iboost(struct drm_i915_private *i915)

{

	return DISPLAY_VER(i915) == 9 && !IS_BROXTON(i915);
@@ -2640,7 +2645,8 @@ static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state, 
		icl_ddi_vswing_sequence(encoder, crtc_state, level);

	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))

		bxt_ddi_vswing_sequence(encoder, crtc_state, level);

	else



	if (has_buf_trans_select(dev_priv))

		hsw_prepare_dp_ddi_buffers(encoder, crtc_state);



	intel_ddi_power_up_lanes(encoder, crtc_state);
@@ -3086,7 +3092,8 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state, 
		icl_ddi_vswing_sequence(encoder, crtc_state, level);

	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))

		bxt_ddi_vswing_sequence(encoder, crtc_state, level);

	else



	if (has_buf_trans_select(dev_priv))

		hsw_prepare_hdmi_ddi_buffers(encoder, crtc_state, level);



	if (has_iboost(dev_priv))