From: Imre Deak Date: Mon, 8 Jul 2024 19:00:27 +0000 (+0300) Subject: drm/i915/dp: Keep cached LTTPR mode up-to-date X-Git-Tag: v6.12-rc1~126^2~22^2~65 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=61fe488fc78a3024b8d4cafc90a34158f4562dae;p=thirdparty%2Fkernel%2Flinux.git drm/i915/dp: Keep cached LTTPR mode up-to-date Nothing depends on the cached LTTPR mode, however for consistency keep it up-to-date with the value programmed to the DPCD register. Reviewed-by: Ville Syrjälä Reviewed-by: Ankit Nautiyal Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/20240708190029.271247-5-imre.deak@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 56b9c5cb1254d..af0b71bdf1fcf 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -114,7 +114,13 @@ intel_dp_set_lttpr_transparent_mode(struct intel_dp *intel_dp, bool enable) u8 val = enable ? DP_PHY_REPEATER_MODE_TRANSPARENT : DP_PHY_REPEATER_MODE_NON_TRANSPARENT; - return drm_dp_dpcd_write(&intel_dp->aux, DP_PHY_REPEATER_MODE, &val, 1) == 1; + if (drm_dp_dpcd_write(&intel_dp->aux, DP_PHY_REPEATER_MODE, &val, 1) != 1) + return false; + + intel_dp->lttpr_common_caps[DP_PHY_REPEATER_MODE - + DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV] = val; + + return true; } static bool intel_dp_lttpr_transparent_mode_enabled(struct intel_dp *intel_dp)