1*4882a593SmuzhiyunFrom 192c0204a6dc654ec4b306a08b07367a3de04c60 Mon Sep 17 00:00:00 2001
2*4882a593SmuzhiyunFrom: Jeffy Chen <jeffy.chen@rock-chips.com>
3*4882a593SmuzhiyunDate: Mon, 26 Oct 2020 17:50:06 +0800
4*4882a593SmuzhiyunSubject: [PATCH 40/93] HACK: backend-drm: Workaround atomic flip for BSP 4.4
5*4882a593Smuzhiyun kernel
6*4882a593Smuzhiyun
7*4882a593SmuzhiyunThe Rockchip BSP 4.4 kernel might generate unexpected flip events
8*4882a593Smuzhiyunwhen dpms changed.
9*4882a593Smuzhiyun
10*4882a593SmuzhiyunSigned-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
11*4882a593Smuzhiyun---
12*4882a593Smuzhiyun libweston/backend-drm/kms.c | 6 +++++-
13*4882a593Smuzhiyun 1 file changed, 5 insertions(+), 1 deletion(-)
14*4882a593Smuzhiyun
15*4882a593Smuzhiyundiff --git a/libweston/backend-drm/kms.c b/libweston/backend-drm/kms.c
16*4882a593Smuzhiyunindex fb43c43..61dadef 100644
17*4882a593Smuzhiyun--- a/libweston/backend-drm/kms.c
18*4882a593Smuzhiyun+++ b/libweston/backend-drm/kms.c
19*4882a593Smuzhiyun@@ -1535,7 +1535,11 @@ atomic_flip_handler(int fd, unsigned int frame, unsigned int sec,
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun 	drm_debug(b, "[atomic][CRTC:%u] flip processing started\n", crtc_id);
22*4882a593Smuzhiyun 	assert(device->atomic_modeset);
23*4882a593Smuzhiyun-	assert(output->atomic_complete_pending);
24*4882a593Smuzhiyun+
25*4882a593Smuzhiyun+	/* HACK: Disable this check sink the Rockchip BSP 4.4 kernel might
26*4882a593Smuzhiyun+	 * generate unexpected flip events when dpms changed. */
27*4882a593Smuzhiyun+	//assert(output->atomic_complete_pending);
28*4882a593Smuzhiyun+
29*4882a593Smuzhiyun 	output->atomic_complete_pending = false;
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun 	drm_output_update_complete(output, flags, sec, usec);
32*4882a593Smuzhiyun--
33*4882a593Smuzhiyun2.20.1
34*4882a593Smuzhiyun
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