drm/amdgpu/gfx9: rework lbpw enable code

To avoid changing the global lbpw module parameter directly.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 12 insertions, 17 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index d6783ba2c9d0..c27caa144c57 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2400,26 +2400,21 @@ static int gfx_v9_0_rlc_resume(struct amdgpu_device *adev)
                         return r;
         }
 
-        if (amdgpu_lbpw == -1) {
-                switch (adev->asic_type) {
-                case CHIP_RAVEN:
-                        amdgpu_lbpw = 1;
-                        break;
-                case CHIP_VEGA20:
-                        amdgpu_lbpw = 0;
-                        break;
-                default:
-                        amdgpu_lbpw = 0;
-                        break;
-                }
-        }
-
-        if (adev->asic_type == CHIP_RAVEN ||
-            adev->asic_type == CHIP_VEGA20) {
-                if (amdgpu_lbpw != 0)
+        switch (adev->asic_type) {
+        case CHIP_RAVEN:
+                if (amdgpu_lbpw == 0)
+                        gfx_v9_0_enable_lbpw(adev, false);
+                else
+                        gfx_v9_0_enable_lbpw(adev, true);
+                break;
+        case CHIP_VEGA20:
+                if (amdgpu_lbpw > 0)
                         gfx_v9_0_enable_lbpw(adev, true);
                 else
                         gfx_v9_0_enable_lbpw(adev, false);
+                break;
+        default:
+                break;
         }
 
         adev->gfx.rlc.funcs->start(adev);