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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: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211001130107.1746-3-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
This commit is contained in:
Ville Syrjälä 2021-10-01 16:00:59 +03:00
parent f820693bc2
commit 5bafd85dd7
1 changed files with 9 additions and 2 deletions
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11
drivers/gpu/drm/i915/display/intel_ddi.c
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@ -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))