The hdmi_level_shifter part of General Bytes definition in VBT, which was
used for choosing different levels on earlier platforms is now a hidden
optin and shows the default value of 0. The level shifter is now to be
deduced from hdmi_default_entry in intel_ddi_buf_trans for each phy.
Skip providing the default hw provided value to force driver to choose hdmi
default entry.
Bspec: 20124
Cc: Khaled Almahallawy <khaled.almahallawy@xxxxxxxxx>
Cc: Lee Shawn C <shawn.c.lee@xxxxxxxxx>
Cc: Clint Taylor <Clinton.A.Taylor@xxxxxxxxx>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_bios.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 34a397adbd6b..4b9bf76e137d 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2615,7 +2615,8 @@ intel_bios_encoder_is_lspcon(const struct intel_bios_encoder_data *devdata)
/* This is an index in the HDMI/DVI DDI buffer translation table, or -1 */
int intel_bios_hdmi_level_shift(const struct intel_bios_encoder_data *devdata)
{
- if (!devdata || devdata->i915->display.vbt.version < 158)
+ if (!devdata || devdata->i915->display.vbt.version < 158 ||
+ DISPLAY_VER(devdata->i915) >= 14)
return -1;
return devdata->child.hdmi_level_shifter_value;
--
2.34.1
