diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dp.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dp.c b/drivers/video/fbdev/msm/mdss_dp.c index 619fab4cdb93..7cc27d5fb670 100644 --- a/drivers/video/fbdev/msm/mdss_dp.c +++ b/drivers/video/fbdev/msm/mdss_dp.c @@ -1512,8 +1512,14 @@ exit_loop: pr_debug("end\n"); - /* Send a connect notification */ - if (!mdss_dp_is_phy_test_pattern_requested(dp_drv)) + /* + * Send a connect notification to clients except when processing link + * training and electrical compliance tests. There is no need to send + * a notification in these testing use cases as there is no + * expectation of receiving a video signal as part of the test. + */ + if (!mdss_dp_is_phy_test_pattern_requested(dp_drv) && + !mdss_dp_is_link_training_requested(dp_drv)) mdss_dp_notify_clients(dp_drv, NOTIFY_CONNECT_IRQ_HPD); return ret; @@ -1603,6 +1609,14 @@ int mdss_dp_on(struct mdss_panel_data *pdata) panel_data); if (dp_drv->power_on) { + /* + * Acknowledge the connection event if link training has already + * been done. This will unblock the external display thread and + * allow the driver to progress. For example, in the case of + * video test pattern requests, to send the test response and + * start transmitting the test pattern. + */ + mdss_dp_ack_state(dp_drv, true); pr_debug("Link already setup, return\n"); return 0; } |