diff options
Diffstat (limited to 'drivers/gpu/drm/drm_dp_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_helper.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 9461e2f27316..7ecaa11f35f6 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -282,3 +282,18 @@ u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE], } EXPORT_SYMBOL(drm_dp_get_adjust_request_pre_emphasis); +void drm_dp_link_train_clock_recovery_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]) { + if (dpcd[DP_TRAINING_AUX_RD_INTERVAL] == 0) + udelay(100); + else + mdelay(dpcd[DP_TRAINING_AUX_RD_INTERVAL] * 4); +} +EXPORT_SYMBOL(drm_dp_link_train_clock_recovery_delay); + +void drm_dp_link_train_channel_eq_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]) { + if (dpcd[DP_TRAINING_AUX_RD_INTERVAL] == 0) + udelay(400); + else + mdelay(dpcd[DP_TRAINING_AUX_RD_INTERVAL] * 4); +} +EXPORT_SYMBOL(drm_dp_link_train_channel_eq_delay); |