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Commit df40834e authored by Sankeerth Billakanti's avatar Sankeerth Billakanti
Browse files

disp: msm: dp: send dp hpd notification from attention_work 



The hpd notification is skipped in connect_work if there is an
attention_work pending. So, the notification has to be sent in
attention_work.

Some dongles issue multiple attention events with LINK_STATUS_UPDATED
while the connect_work is in progress. So, once the link training
is successfully completed the LINK_STATUS_UPDATED attention event is
considered handled and the attention_work scheduled to execute after
the connect_work will return early without handling the
hpd_notification cases.

This change will ensure the hpd_notification is sent from
attention_work in such cases.

Change-Id: I5ef6781354b80842d2a6f44360cde25ee6d2b0b7
Signed-off-by: default avatarSankeerth Billakanti <sbillaka@codeaurora.org>
parent c0018ab6

msm/dp/dp_display.c

+14 −12
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/module.h>
@@ -1365,9 +1365,15 @@ static void dp_display_attention_work(struct work_struct *work) 
		mutex_unlock(&dp->session_lock);



		if (dp->link->sink_request & (DP_TEST_LINK_PHY_TEST_PATTERN |

			DP_TEST_LINK_TRAINING)) {

			DP_TEST_LINK_TRAINING))

			goto mst_attention;

		} else {

	}



cp_irq:

	if (dp_display_is_hdcp_enabled(dp) && dp->hdcp.ops->cp_irq)

		dp->hdcp.ops->cp_irq(dp->hdcp.data);



	if (!dp->mst.mst_active) {

		/*

		 * It is possible that the connect_work skipped sending

		 * the HPD notification if the attention message was
@@ -1377,11 +1383,7 @@ static void dp_display_attention_work(struct work_struct *work) 
		 */

		dp_display_send_hpd_notification(dp);

	}

	}



cp_irq:

	if (dp_display_is_hdcp_enabled(dp) && dp->hdcp.ops->cp_irq)

		dp->hdcp.ops->cp_irq(dp->hdcp.data);

mst_attention:

	dp_display_mst_attention(dp);

	SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT, dp->state);