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drm/i915/dp: Return the right vswing tables

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DDI ports have its encoders initialized with INTEL_OUTPUT_DDI type and
later eDP ports that have the type changed to INTEL_OUTPUT_EDP.
But for all other DDI ports it can drive HDMI or DP depending on what
user connects to the ports.

ehl_get_combo_buf_trans() and tgl_get_combo_buf_trans() was checking
for INTEL_OUTPUT_DP that was never true, causing wrong vswing tables
being used.

So here replacing the INTEL_OUTPUT_DP checks by the valid output types
that this functions receives as parameters. HDMI cases will be
correctly handled as it do not use encoder->type, instead it calls the
functions with INTEL_OUTPUT_HDMI as type parameter and HDMI don't have
retraining.

v2:
changed INTEL_OUTPUT_DDI to INTEL_OUTPUT_EDP and INTEL_OUTPUT_HDMI

Fixes: bd3cf6f7ce ("drm/i915/dp/tgl+: Update combo phy vswing tables")
Cc: Clinton A Taylor <clinton.a.taylor@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200330210044.130510-1-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2020-03-30 14:00:42 -07:00
parent f77a2db27f
commit 70988115ac
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/i915/display/intel_ddi.c
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@ -947,7 +947,8 @@ static const struct cnl_ddi_buf_trans *
ehl_get_combo_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
int *n_entries)
{
if (type == INTEL_OUTPUT_DP && rate > 270000) {
if (type != INTEL_OUTPUT_HDMI && type != INTEL_OUTPUT_EDP &&
rate > 270000) {
*n_entries = ARRAY_SIZE(ehl_combo_phy_ddi_translations_hbr2_hbr3);
return ehl_combo_phy_ddi_translations_hbr2_hbr3;
}
@ -959,7 +960,7 @@ static const struct cnl_ddi_buf_trans *
tgl_get_combo_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
int *n_entries)
{
if (type != INTEL_OUTPUT_DP) {
if (type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_EDP) {
return icl_get_combo_buf_trans(dev_priv, type, rate, n_entries);
} else if (rate > 270000) {
*n_entries = ARRAY_SIZE(tgl_combo_phy_ddi_translations_dp_hbr2);