drm/amdgpu: add ATHUB IP v3.0.1 Clock Gating support

Add ATHUB IP v3.0.1 in athub_v3_0_set_clockgating.

The regATHUB_MISC_CNTL has different offset for ATHUB IP v3.0.1,
so need to add IP version checking to use the right REG offset.

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/athub_v3_0.c b/drivers/gpu/drm/amd/amdgpu/athub_v3_0.c
index 33a8a73..f0e235f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/athub_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/athub_v3_0.c
@@ -28,13 +28,44 @@
 #include "navi10_enum.h"
 #include "soc15_common.h"
 
+#define regATHUB_MISC_CNTL_V3_0_1                      0x00d7
+#define regATHUB_MISC_CNTL_V3_0_1_BASE_IDX             0
+
+
+static uint32_t athub_v3_0_get_cg_cntl(struct amdgpu_device *adev)
+{
+       uint32_t data;
+
+       switch (adev->ip_versions[ATHUB_HWIP][0]) {
+       case IP_VERSION(3, 0, 1):
+               data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL_V3_0_1);
+               break;
+       default:
+               data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL);
+               break;
+       }
+       return data;
+}
+
+static void athub_v3_0_set_cg_cntl(struct amdgpu_device *adev, uint32_t data)
+{
+       switch (adev->ip_versions[ATHUB_HWIP][0]) {
+       case IP_VERSION(3, 0, 1):
+               WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL_V3_0_1, data);
+               break;
+       default:
+               WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL, data);
+               break;
+       }
+}
+
 static void
 athub_v3_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
                                            bool enable)
 {
        uint32_t def, data;
 
-       def = data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL);
+       def = data = athub_v3_0_get_cg_cntl(adev);
 
        if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ATHUB_MGCG))
                data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
@@ -42,7 +73,7 @@ athub_v3_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
                data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
 
        if (def != data)
-               WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL, data);
+               athub_v3_0_set_cg_cntl(adev, data);
 }
 
 static void
@@ -51,7 +82,7 @@ athub_v3_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
 {
        uint32_t def, data;
 
-       def = data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL);
+       def = data = athub_v3_0_get_cg_cntl(adev);
 
        if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ATHUB_LS))
                data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
@@ -59,7 +90,7 @@ athub_v3_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
                data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
 
        if (def != data)
-               WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL, data);
+               athub_v3_0_set_cg_cntl(adev, data);
 }
 
 int athub_v3_0_set_clockgating(struct amdgpu_device *adev,
@@ -70,6 +101,7 @@ int athub_v3_0_set_clockgating(struct amdgpu_device *adev,
 
        switch (adev->ip_versions[ATHUB_HWIP][0]) {
        case IP_VERSION(3, 0, 0):
+       case IP_VERSION(3, 0, 1):
        case IP_VERSION(3, 0, 2):
                athub_v3_0_update_medium_grain_clock_gating(adev,
                                state == AMD_CG_STATE_GATE);
@@ -88,7 +120,7 @@ void athub_v3_0_get_clockgating(struct amdgpu_device *adev, u64 *flags)
        int data;
 
        /* AMD_CG_SUPPORT_ATHUB_MGCG */
-       data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL);
+       data = athub_v3_0_get_cg_cntl(adev);
        if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
                *flags |= AMD_CG_SUPPORT_ATHUB_MGCG;