diff options
| author | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2023-06-17 00:00:28 +0300 |
|---|---|---|
| committer | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2023-06-21 00:19:56 +0300 |
| commit | d9c078d30e2c605d1a0460e893f7c4d75949c5b0 (patch) | |
| tree | 352eae12a6725c705eef090c6ba2ce78d9c3105c /drivers/gpu/drm/i915/display/intel_bios.c | |
| parent | 7e8d87e2da3b359ad73246233673a84c4dabfa07 (diff) | |
| download | linux-d9c078d30e2c605d1a0460e893f7c4d75949c5b0.tar.xz | |
drm/i915/mtl: Skip using vbt hdmi_level_shifter selection on MTL
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@intel.com>
Cc: Lee Shawn C <shawn.c.lee@intel.com>
Cc: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230616210028.1601533-1-radhakrishna.sripada@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; |