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drm/i915/display/ehl: Use EHL DP tables for eDP ports without low power support

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Reusing icl_get_combo_buf_trans() for eDP was causing the wrong table
being used when the eDP port don't support low power voltage swing table.

v2: Only use icl_combo_phy_ddi_translations_edp_hbr3 if low_vswing is
set as EHL combo phy supports HBR3 (Matt R)

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Cc: Lee Shawn C <shawn.c.lee@intel.com>
Cc: Khaled Almahallawy <khaled.almahallawy@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826201549.83658-2-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2020-08-26 13:15:48 -07:00
parent a8c90bc119
commit 2a498ab492
1 changed files with 19 additions and 3 deletions
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22
drivers/gpu/drm/i915/display/intel_ddi.c
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@ -1074,12 +1074,28 @@ static const struct cnl_ddi_buf_trans *
ehl_get_combo_buf_trans(struct intel_encoder *encoder, int type, int rate,
int *n_entries)
{
if (type != INTEL_OUTPUT_HDMI && type != INTEL_OUTPUT_EDP) {
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
switch (type) {
case INTEL_OUTPUT_HDMI:
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_hdmi);
return icl_combo_phy_ddi_translations_hdmi;
case INTEL_OUTPUT_EDP:
if (dev_priv->vbt.edp.low_vswing) {
if (rate > 540000) {
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_hbr3);
return icl_combo_phy_ddi_translations_edp_hbr3;
} else {
*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_edp_hbr2);
return icl_combo_phy_ddi_translations_edp_hbr2;
}
}
/* fall through */
default:
/* All combo DP and eDP ports that do not support low_vswing */
*n_entries = ARRAY_SIZE(ehl_combo_phy_ddi_translations_dp);
return ehl_combo_phy_ddi_translations_dp;
}
return icl_get_combo_buf_trans(encoder, type, rate, n_entries);
}
static const struct cnl_ddi_buf_trans *