From 497f15f2bdef0124b0803ba9cceadf7a9b670079 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Tue, 7 Jul 2020 11:37:14 -0400
Subject: [PATCH] drm/amd/display: Add missing CW4 programming for DCN30
[Why]
To support inbox1 in CW4 we need to actually program CW4 instead of
region 4 for newer firmware.
This is done correctly on DCN20/DCN21 but this code wasn't added to
DCN30.
[How]
Copy over the missing code. It doesn't need address translation since
DCN30 uses virtual addressing.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
.../gpu/drm/amd/display/dmub/src/dmub_dcn30.c | 21 ++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn30.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn30.c
index ba8d0bfb5522d..215178b8d415f 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn30.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn30.c
@@ -153,11 +153,22 @@ void dmub_dcn30_setup_windows(struct dmub_srv *dmub,
offset = cw4->offset;
- REG_WRITE(DMCUB_REGION4_OFFSET, offset.u.low_part);
- REG_WRITE(DMCUB_REGION4_OFFSET_HIGH, offset.u.high_part);
- REG_SET_2(DMCUB_REGION4_TOP_ADDRESS, 0, DMCUB_REGION4_TOP_ADDRESS,
- cw4->region.top - cw4->region.base - 1, DMCUB_REGION4_ENABLE,
- 1);
+ /* New firmware can support CW4. */
+ if (dmub->fw_version > DMUB_FW_VERSION(1, 0, 10)) {
+ REG_WRITE(DMCUB_REGION3_CW4_OFFSET, offset.u.low_part);
+ REG_WRITE(DMCUB_REGION3_CW4_OFFSET_HIGH, offset.u.high_part);
+ REG_WRITE(DMCUB_REGION3_CW4_BASE_ADDRESS, cw4->region.base);
+ REG_SET_2(DMCUB_REGION3_CW4_TOP_ADDRESS, 0,
+ DMCUB_REGION3_CW4_TOP_ADDRESS, cw4->region.top,
+ DMCUB_REGION3_CW4_ENABLE, 1);
+ } else {
+ REG_WRITE(DMCUB_REGION4_OFFSET, offset.u.low_part);
+ REG_WRITE(DMCUB_REGION4_OFFSET_HIGH, offset.u.high_part);
+ REG_SET_2(DMCUB_REGION4_TOP_ADDRESS, 0,
+ DMCUB_REGION4_TOP_ADDRESS,
+ cw4->region.top - cw4->region.base - 1,
+ DMCUB_REGION4_ENABLE, 1);
+ }
offset = cw5->offset;
--
2.30.2