From: Radhakrishna Sripada Date: Fri, 16 Jun 2023 21:00:28 +0000 (-0700) Subject: drm/i915/mtl: Skip using vbt hdmi_level_shifter selection on MTL X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d9c078d30e2c605d1a0460e893f7c4d75949c5b0;p=linux.git 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 Cc: Lee Shawn C Cc: Clint Taylor Signed-off-by: Radhakrishna Sripada Reviewed-by: Clint Taylor Link: https://patchwork.freedesktop.org/patch/msgid/20230616210028.1601533-1-radhakrishna.sripada@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 34a397adbd6b0..4b9bf76e137d9 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;