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

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;