drm/amdgpu: Virtual display need to support multiple ctrcs

The crtc num is determined by virtual_display parameter.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 43a1ee3..d791bfe 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -38,7 +38,8 @@ bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev)
 void amdgpu_virt_init_setting(struct amdgpu_device *adev)
 {
        /* enable virtual display */
-       adev->mode_info.num_crtc = 1;
+       if (adev->mode_info.num_crtc == 0)
+               adev->mode_info.num_crtc = 1;
        adev->enable_virtual_display = true;
        adev->ddev->driver->driver_features &= ~DRIVER_ATOMIC;
        adev->cg_flags = 0;