From bb6481e5f5d78cb83fc07e845766f8094bc51112 Mon Sep 17 00:00:00 2001
From: Kevin Mihelich <kevin@archlinuxarm.org>
Date: Sun, 23 Apr 2017 13:42:34 -0600
Subject: [PATCH 4/4] skip HDCP setup

This causes a lockup immediately upon starting X.
---
 drivers/gpu/drm/rockchip/cdn-dp-core.c | 89 ----------------------------------
 1 file changed, 89 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index e10ac220ef4b..c9d94e17b13c 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1151,88 +1151,6 @@ static int cdn_dp_pd_event(struct notifier_block *nb,
 	return NOTIFY_DONE;
 }
 
-static int cdn_dp_set_hdcp_drm_property(struct cdn_dp_device *dp, uint64_t val)
-{
-	struct drm_connector *connector = &dp->connector;
-	struct drm_mode_config *mc = &connector->dev->mode_config;
-
-	return drm_object_property_set_value(&connector->base,
-					     mc->content_protection_property,
-					     val);
-}
-
-static bool cdn_dp_hdcp_authorize(struct cdn_dp_device *dp)
-{
-	bool auth_done = false;
-	u16 tx_status;
-	u32 sw_event;
-	int ret;
-
-	mutex_lock(&dp->lock);
-
-	/*
-	 * HDCP authentication might cause the disconnect hpd event, just
-	 * stop the hdcp event SM.
-	 */
-	if (!dp->connected) {
-		auth_done = true;
-		goto out;
-	}
-
-	sw_event = cdn_dp_get_event(dp);
-
-	if (sw_event & HDCP_TX_STATUS_EVENT) {
-		auth_done = true;
-
-		ret = cdn_dp_hdcp_tx_status_req(dp, &tx_status);
-		if (ret)
-			goto out;
-		if (HDCP_TX_STATUS_ERROR(tx_status)) {
-			dev_err(dp->dev, "hdcp status error: %x\n",
-				HDCP_TX_STATUS_ERROR(tx_status));
-			goto out;
-		} else if (tx_status & HDCP_TX_STATUS_AUTHENTICATED) {
-			cdn_dp_set_hdcp_drm_property(dp,
-				DRM_MODE_CONTENT_PROTECTION_ENABLED);
-			goto out;
-		} else {
-			auth_done = false;
-		}
-	}
-
-	if (sw_event & HDCP_TX_IS_RECEIVER_ID_VALID_EVENT) {
-		ret = cdn_dp_hdcp_tx_is_receiver_id_valid_req(dp);
-		if (ret) {
-			auth_done = true;
-			goto out;
-		}
-		ret = cdn_dp_hdcp_tx_respond_id_valid(dp, true);
-		if (ret)
-			auth_done = true;
-	}
-
-out:
-	mutex_unlock(&dp->lock);
-
-	return auth_done;
-}
-
-static void cdn_dp_hdcp_event_work(struct work_struct *work)
-{
-	struct cdn_dp_device *dp = container_of(work, struct cdn_dp_device,
-						hdcp_event_work.work);
-	unsigned long timeout = jiffies +
-				msecs_to_jiffies(HDCP_EVENT_TIMEOUT_MS);
-
-	while (time_before(jiffies, timeout)) {
-		if (cdn_dp_hdcp_authorize(dp))
-			return;
-		msleep(HDCP_RETRY_INTERVAL_MS);
-	}
-
-	dev_err(dp->dev, "Failed to authorize hdcp\n");
-}
-
 static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 {
 	struct cdn_dp_device *dp = dev_get_drvdata(dev);
@@ -1240,7 +1158,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 	struct drm_connector *connector;
 	struct cdn_dp_port *port;
 	struct drm_device *drm_dev = data;
-	struct drm_mode_config *mode_config;
 	int ret, i;
 
 	ret = cdn_dp_parse_dt(dp);
@@ -1253,7 +1170,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 	dp->active_port = -1;
 
 	INIT_WORK(&dp->event_work, cdn_dp_pd_event_work);
-	INIT_DELAYED_WORK(&dp->hdcp_event_work, cdn_dp_hdcp_event_work);
 
 	encoder = &dp->encoder;
 
@@ -1310,11 +1226,6 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
 
 	schedule_work(&dp->event_work);
 
-	mode_config = &connector->dev->mode_config;
-	drm_object_attach_property(&connector->base,
-				   mode_config->content_protection_property,
-				   DRM_MODE_CONTENT_PROTECTION_UNDESIRED);
-
 	return 0;
 
 err_free_connector:
-- 
2.14.1