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drm/i915/icl: Add DDI HDMI level selection for ICL

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This patch adds a proper HDMI DDI entry level for vswing
programming sequences on ICL.

Spec doesn't specify any default for HDMI tables,
so let's pick the last entry as the default for now
to stay consistent with older platform like CNL.

Cc: Rakshmi Bhatia <rakshmi.bhatia@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180522002558.29262-8-paulo.r.zanoni@intel.com
This commit is contained in:
Manasi Navare 2018-05-21 17:25:41 -07:00 committed by Paulo Zanoni
parent e9e7dc4144
commit dccc7228b5
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/i915/intel_ddi.c
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@ -915,7 +915,14 @@ static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port por
level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift;
if (IS_CANNONLAKE(dev_priv)) {
if (IS_ICELAKE(dev_priv)) {
if (port == PORT_A || port == PORT_B)
icl_get_combo_buf_trans(dev_priv, port,
INTEL_OUTPUT_HDMI, &n_entries);
else
n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations);
default_entry = n_entries - 1;
} else if (IS_CANNONLAKE(dev_priv)) {
cnl_get_buf_trans_hdmi(dev_priv, &n_entries);
default_entry = n_entries - 1;
} else if (IS_GEN9_LP(dev_priv)) {