RE: [PATCH] drm/amdgpu: add judgement for dc support

["Chen, Guchun" <Guchun.Chen@xxxxxxx>]

[AMD Public Use]

Reviewed-by: Guchun Chen <guchun.chen@xxxxxxx>

Regards,
Guchun

-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Asher Song
Sent: Tuesday, May 25, 2021 12:03 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Gao, Likun <Likun.Gao@xxxxxxx>; Song, Asher <Asher.Song@xxxxxxx>
Subject: [PATCH] drm/amdgpu: add judgement for dc support

Drop DC initialization when DCN is harvested in VBIOS. The way doesn't affect virtual display ip initialization.

Signed-off-by: Likun Gao  <Likun.Gao@xxxxxxx>
Signed-off-by: Asher Song <Asher.Song@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 8848e2b9bef9..148da7ca5d55 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3122,7 +3122,9 @@ bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
  */
 bool amdgpu_device_has_dc_support(struct amdgpu_device *adev)  {
-	if (amdgpu_sriov_vf(adev) || adev->enable_virtual_display)
+	if (amdgpu_sriov_vf(adev) || 
+	    adev->enable_virtual_display ||
+	    (adev->harvest_ip_mask & AMD_HARVEST_IP_DMU_MASK))
 		return false;
 
 	return amdgpu_device_asic_has_dc_support(adev->asic_type);
--
2.25.1

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