From 3fb068c3ec862b63b002e7818896cebea925e109 Mon Sep 17 00:00:00 2001 From: Wenjing Liu Date: Tue, 11 Aug 2020 18:27:48 -0400 Subject: [PATCH] drm/amd/display: always use 100us for cr aux rd interval [why] The cr training aux rd interval is modified without following specs requirements. According to the commit message the change was not intended to modify the value. Therefore it looks like it is caused by a typo in the change. Signed-off-by: Wenjing Liu Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 2334ec428098c..e4b3b71dad03c 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -49,14 +49,14 @@ static struct dc_link_settings get_common_supported_link_settings( struct dc_link_settings link_setting_a, struct dc_link_settings link_setting_b); -static uint32_t get_training_aux_rd_interval( +static uint32_t get_eq_training_aux_rd_interval( struct dc_link *link, - uint32_t default_wait_in_micro_secs) + const struct dc_link_settings *link_settings) { union training_aux_rd_interval training_rd_interval; + uint32_t wait_in_micro_secs = 400; memset(&training_rd_interval, 0, sizeof(training_rd_interval)); - /* overwrite the delay if rev > 1.1*/ if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) { /* DP 1.2 or later - retrieve delay through @@ -68,10 +68,10 @@ static uint32_t get_training_aux_rd_interval( sizeof(training_rd_interval)); if (training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL) - default_wait_in_micro_secs = training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL * 4000; + wait_in_micro_secs = training_rd_interval.bits.TRAINIG_AUX_RD_INTERVAL * 4000; } - return default_wait_in_micro_secs; + return wait_in_micro_secs; } static void wait_for_training_aux_rd_interval( @@ -1251,12 +1251,12 @@ static void initialize_training_settings( if (overrides->cr_pattern_time != NULL) lt_settings->cr_pattern_time = *overrides->cr_pattern_time; else - lt_settings->cr_pattern_time = get_training_aux_rd_interval(link, 100); + lt_settings->cr_pattern_time = 100; if (overrides->eq_pattern_time != NULL) lt_settings->eq_pattern_time = *overrides->eq_pattern_time; else - lt_settings->eq_pattern_time = get_training_aux_rd_interval(link, 400); + lt_settings->eq_pattern_time = get_eq_training_aux_rd_interval(link, link_setting); if (overrides->pattern_for_cr != NULL) lt_settings->pattern_for_cr = *overrides->pattern_for_cr; -- 2.30.2