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Message-ID: <20220128034701.17174-1-Tsung-Hua.Lin@amd.com>
Date: Fri, 28 Jan 2022 11:47:01 +0800
From: RyanLin <Tsung-Hua.Lin@....com>
To: <harry.wentland@....com>, <sunpeng.li@....com>,
<alexander.deucher@....com>, <christian.koenig@....com>,
<David1.Zhou@....com>, <airlied@...ux.ie>, <daniel@...ll.ch>,
<seanpaul@...omium.org>, <bas@...nieuwenhuizen.nl>,
<nicholas.kazlauskas@....com>, <sashal@...nel.org>,
<markyacoub@...gle.com>, <victorchengchi.lu@....com>,
<ching-shih.li@....corp-partner.google.com>,
<Rodrigo.Siqueira@....com>, <ddavenport@...omium.org>,
<amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
<linux-kernel@...r.kernel.org>, <leon.li@....com>
CC: RyanLin <Tsung-Hua.Lin@....com>
Subject: [PATCH v2 1/28] drm/amdgpu: fix that issue that the number of the crtc of the 3250c is not correct
v2:
- remove unnecessary comments and Id
[Why]
External displays take priority over internal display when there are fewer
display controllers than displays.
[How]
The root cause is because of that number of the crtc is not correct.
The number of the crtc on the 3250c is 3, but on the 3500c is 4.
>From the source code, we can see that number of the crtc has been fixed at 4.
Needs to set the num_crtc to 3 for 3250c platform.
Signed-off-by: RyanLin <Tsung-Hua.Lin@....com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 40c91b448f7d..455a2c45e8cd 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2738,9 +2738,15 @@ static int dm_early_init(void *handle)
break;
#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
case CHIP_RAVEN:
- adev->mode_info.num_crtc = 4;
- adev->mode_info.num_hpd = 4;
- adev->mode_info.num_dig = 4;
+ if (adev->rev_id >= 8) {
+ adev->mode_info.num_crtc = 3;
+ adev->mode_info.num_hpd = 3;
+ adev->mode_info.num_dig = 3;
+ } else {
+ adev->mode_info.num_crtc = 4;
+ adev->mode_info.num_hpd = 4;
+ adev->mode_info.num_dig = 4;
+ }
break;
#endif
#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
--
2.25.1
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