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From d691a52f1ffe68a039c5f235860fef167ba339b8 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Mon, 18 Nov 2019 13:31:04 -0500
Subject: [PATCH 4715/4736] drm/amd/display: Extend DMCUB offload testing into
dcn20/21
[Why]
To quickly validate whether DMCUB is running and accepting commands for
offload testing we want to intercept a common sequence as part of
modeset programming.
[How]
OTG enable will cause the most impact in terms of golden register
changes and it's a single register write.
This approach was previously done in dcn10 code when it was shared with
dcn20 but it wasn't ported over to the dcn20 code.
Port over start, execute and wait sequence into dcn20_optc.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
index f5854a5d2b76..673c83e2afd4 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
@@ -59,11 +59,16 @@ bool optc2_enable_crtc(struct timing_generator *optc)
REG_UPDATE(CONTROL,
VTG0_ENABLE, 1);
+ REG_SEQ_START();
+
/* Enable CRTC */
REG_UPDATE_2(OTG_CONTROL,
OTG_DISABLE_POINT_CNTL, 3,
OTG_MASTER_EN, 1);
+ REG_SEQ_SUBMIT();
+ REG_SEQ_WAIT_DONE();
+
return true;
}
--
2.17.1
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