drm/amd/amdgpu: add Polaris12 support (v3)

v2: agd: squash in various fixes
v3: agd: squash in:
drm/amdgpu: remove unnecessary smc sk firmware for polaris12

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ken Wang  <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
index 69b66b9..8fec802 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -52,6 +52,7 @@
 #define FIRMWARE_STONEY		"amdgpu/stoney_vce.bin"
 #define FIRMWARE_POLARIS10	"amdgpu/polaris10_vce.bin"
 #define FIRMWARE_POLARIS11         "amdgpu/polaris11_vce.bin"
+#define FIRMWARE_POLARIS12         "amdgpu/polaris12_vce.bin"
 
 #ifdef CONFIG_DRM_AMDGPU_CIK
 MODULE_FIRMWARE(FIRMWARE_BONAIRE);
@@ -66,6 +67,7 @@ MODULE_FIRMWARE(FIRMWARE_FIJI);
 MODULE_FIRMWARE(FIRMWARE_STONEY);
 MODULE_FIRMWARE(FIRMWARE_POLARIS10);
 MODULE_FIRMWARE(FIRMWARE_POLARIS11);
+MODULE_FIRMWARE(FIRMWARE_POLARIS12);
 
 static void amdgpu_vce_idle_work_handler(struct work_struct *work);
 
@@ -121,6 +123,9 @@ int amdgpu_vce_sw_init(struct amdgpu_device *adev, unsigned long size)
 	case CHIP_POLARIS11:
 		fw_name = FIRMWARE_POLARIS11;
 		break;
+	case CHIP_POLARIS12:
+		fw_name = FIRMWARE_POLARIS12;
+		break;
 
 	default:
 		return -EINVAL;