drm/amd: Enable seamless boot by default on newer ASICs

Seamless boot can technically be supported as far back as DCN1
but to avoid regressions on older hardware, enable it for DCN3 and
later.

If users report using the module parameter that it works on older
ASICs as well, this can be adjusted.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2116e016178abb23e13c78d05c929b8357457bd2..e055e06d020c22b6ebe8f70243b89d4545d8eee5 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1361,9 +1361,9 @@ bool amdgpu_device_need_post(struct amdgpu_device *adev)
 /*
  * Check whether seamless boot is supported.
  *
- * So far we only support seamless boot on select ASICs.
- * If everything goes well, we may consider expanding
- * seamless boot to other ASICs.
+ * So far we only support seamless boot on DCE 3.0 or later.
+ * If users report that it works on older ASICS as well, we may
+ * loosen this.
  */
 bool amdgpu_device_seamless_boot_supported(struct amdgpu_device *adev)
 {
@@ -1383,14 +1383,7 @@ bool amdgpu_device_seamless_boot_supported(struct amdgpu_device *adev)
        if (adev->mman.keep_stolen_vga_memory)
                return false;
 
-       switch (adev->ip_versions[DCE_HWIP][0]) {
-       case IP_VERSION(3, 0, 1):
-               return true;
-       default:
-               break;
-       }
-
-       return false;
+       return adev->ip_versions[DCE_HWIP][0] >= IP_VERSION(3, 0, 0);
 }
 
 /*