drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets

add event thread to execute events serially from event queue. Also
timeout mode is supported  which allow an event be deferred to be
executed at later time. Both link and phy compliant tests had been
done successfully.

Changes in v2:
-- Fix potential deadlock by removing redundant connect_mutex
-- Check and enable link clock during modeset
-- Drop unused code and fix function prototypes.
-- set sink power to normal operation state (D0) before DPCD read

Changes in v3:
-- push idle pattern at main link before timing generator off
-- add timeout handles for both connect and disconnect

Changes in v4:
-- add ST_SUSPEND_PENDING to handles suspend/modeset test operations
-- clear dp phy aux interrupt status when ERR_DPPHY_AUX error
-- send segment addr during edid read
-- clear bpp depth before MISC register write

Changes in v5:
-- add ST_SUSPENDED to fix crash at resume

Changes in v6:
-- at msm_dp_display_enable() do not return until resume_done to avoid
   kms commit timeout

Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.c b/drivers/gpu/drm/msm/dp/dp_hpd.c
index 5b08ce580702..5b8fe32022b5 100644
--- a/drivers/gpu/drm/msm/dp/dp_hpd.c
+++ b/drivers/gpu/drm/msm/dp/dp_hpd.c
@@ -24,7 +24,7 @@ struct dp_hpd_private {
 	struct dp_usbpd dp_usbpd;
 };
 
-static int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd)
+int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd)
 {
 	int rc = 0;
 	struct dp_hpd_private *hpd_priv;