drm/amdgpu/uvd6: add bypass support for fiji (v3)

Handle uvd clock bypass settings as part of clockgating
setup.

v2: fix gate logic
v3: fix header include

Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
index 5665a4fd09ce..d015cb0c9eb5 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -31,6 +31,8 @@
 #include "uvd/uvd_6_0_sh_mask.h"
 #include "oss/oss_2_0_d.h"
 #include "oss/oss_2_0_sh_mask.h"
+#include "smu/smu_7_1_3_d.h"
+#include "smu/smu_7_1_3_sh_mask.h"
 #include "vi.h"
 
 static void uvd_v6_0_set_ring_funcs(struct amdgpu_device *adev);
@@ -823,6 +825,20 @@ static void uvd_v6_0_set_hw_clock_gating(struct amdgpu_device *adev)
 }
 #endif
 
+static void uvd_v6_set_bypass_mode(struct amdgpu_device *adev, bool enable)
+{
+        u32 tmp = RREG32_SMC(ixGCK_DFS_BYPASS_CNTL);
+
+        if (enable)
+                tmp |= (GCK_DFS_BYPASS_CNTL__BYPASSDCLK_MASK |
+                        GCK_DFS_BYPASS_CNTL__BYPASSVCLK_MASK);
+        else
+                tmp &= ~(GCK_DFS_BYPASS_CNTL__BYPASSDCLK_MASK |
+                         GCK_DFS_BYPASS_CNTL__BYPASSVCLK_MASK);
+
+        WREG32_SMC(ixGCK_DFS_BYPASS_CNTL, tmp);
+}
+
 static int uvd_v6_0_set_clockgating_state(void *handle,
                                           enum amd_clockgating_state state)
 {
@@ -830,6 +846,9 @@ static int uvd_v6_0_set_clockgating_state(void *handle,
         bool enable = (state == AMD_CG_STATE_GATE) ? true : false;
         static int curstate = -1;
 
+        if (adev->asic_type == CHIP_FIJI)
+                uvd_v6_set_bypass_mode(adev, enable);
+
         if (!(adev->cg_flags & AMD_CG_SUPPORT_UVD_MGCG))
                 return 0;