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Commit de86ae0b authored by Srikanthreddy Ponogoti's avatar Srikanthreddy Ponogoti Committed by Gerrit - the friendly Code Review server
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drm/dp: fix DPCD arbitration with CEC 



Handle CEC_IRQs efficiently so as to resolve
arbitration issues between normal DPCD and CEC registers.

Change-Id: I853124ceb08532558f5059b710873eba7d7f8034
Signed-off-by: default avatarsrikanthreddy ponogoti <quic_sponogot@quicinc.com>
parent 9ee09db4

drivers/gpu/drm/msm/dp/dp_display.c

+2 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.

 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -796,7 +797,7 @@ static int dp_display_usbpd_attention_cb(struct device *dev) 
		return -ENODEV;

	}



	if (dp->usbpd->hpd_high && dp->usbpd->hpd_irq)

	if (dp->usbpd->hpd_irq && dp->usbpd->hpd_high && !dp->power_on)

		drm_dp_cec_irq(dp->aux->drm_aux);



	if (dp->usbpd->hpd_irq && dp->usbpd->hpd_high &&

drivers/gpu/drm/msm/dp/dp_link.c

+3 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2012-2018,2020-2021, The Linux Foundation. All rights reserved.

 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -792,6 +793,8 @@ static int dp_link_parse_request(struct dp_link_private *link) 


	pr_debug("device service irq vector = 0x%x\n", data);



	drm_dp_cec_irq(link->aux->drm_aux);



	if (!(data & DP_AUTOMATED_TEST_REQUEST)) {

		pr_debug("no test requested\n");

		return 0;