Commit 6e757850 authored Mar 06, 2020 by Ayush Kumar Committed by Gerrit - the friendly Code Review server May 16, 2020

msm: camera: isp: Fix IRQ delay handling logic



Delayed IRQ handling logic measures time deference between 2 consecutive
IRQs (RUP, EPOCH BUF_DONE), if time difference is greater then 1 frame
time than, it assumes that IRQs are merged.
If KMD does not apply any request, then delay handling logic measures
delta between two epochs IRQs, which should be 1 frame time, which will
be considered delay and fence error will be signaled.
This patch handles above case.

CRs-Fixed: 2639997
Change-Id: I72ea46171d867ec7ae6e2852110a3ef10df81cf1
Signed-off-by: Ayush Kumar <ayushkr@codeaurora.org>
Signed-off-by: Trishansh Bhardwaj <tbhardwa@codeaurora.org>

parent 3aa681b6

drivers/media/platform/msm/camera/cam_isp/cam_isp_context.c

+5 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2017-2020, The Linux Foundation. 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
		@@ -589,6 +589,10 @@ static int __cam_isp_ctx_handle_buf_done_in_activated_state(
		trace_cam_buf_done("ISP", ctx, req);

		req_isp = (struct cam_isp_ctx_req *) req->req_priv;

		if (ctx_isp->active_req_cnt == 1)
		ctx_isp->irq_delay_detect = false;

		if (ctx_isp->frame_id == 1)
		ctx_isp->irq_timestamps = done->irq_mono_boot_time;
		else if (ctx_isp->fps && ((done->irq_mono_boot_time -