From 1a92c70ed8053855811d5e8c62e6a14e1d06e4ab Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Thu, 8 Jun 2017 13:41:02 -0700 Subject: [PATCH] drm/i915/dp: Generalize intel_dp_link_params function to accept arguments to be validated This function now takes the link rate and lane ocunt to be validated as an argument so that this can be used for validating even the compliance test link parameters. Signed-off-by: Manasi Navare Cc: Ville Syrjala Cc: Jani Nikula Reviewed-by: Jani Nikula Tested-by: Nathan Ciobanu Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/1496954463-18038-1-git-send-email-manasi.d.navare@intel.com --- drivers/gpu/drm/i915/intel_dp.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 5ba8366..de2aaad 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -334,19 +334,20 @@ static int intel_dp_common_len_rate_limit(struct intel_dp *intel_dp, return 0; } -static bool intel_dp_link_params_valid(struct intel_dp *intel_dp) +static bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate, + uint8_t lane_count) { /* * FIXME: we need to synchronize the current link parameters with * hardware readout. Currently fast link training doesn't work on * boot-up. */ - if (intel_dp->link_rate == 0 || - intel_dp->link_rate > intel_dp->max_link_rate) + if (link_rate == 0 || + link_rate > intel_dp->max_link_rate) return false; - if (intel_dp->lane_count == 0 || - intel_dp->lane_count > intel_dp_max_lane_count(intel_dp)) + if (lane_count == 0 || + lane_count > intel_dp_max_lane_count(intel_dp)) return false; return true; @@ -4275,7 +4276,8 @@ intel_dp_check_link_status(struct intel_dp *intel_dp) * Validate the cached values of intel_dp->link_rate and * intel_dp->lane_count before attempting to retrain. */ - if (!intel_dp_link_params_valid(intel_dp)) + if (!intel_dp_link_params_valid(intel_dp, intel_dp->link_rate, + intel_dp->lane_count)) return; /* Retrain if Channel EQ or CR not ok */ -- 2.7.4