[PATCH 2/2] drm/amdgpu: Power down acp if board uses AZ

[Rex Zhu]

if board uses AZ rather than ACP, we power down acp
through smu to save power.

Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index 71efcf3..4e18a88 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -35,6 +35,7 @@
 
 #include "acp_gfx_if.h"
 
+
 #define ACP_TILE_ON_MASK                	0x03
 #define ACP_TILE_OFF_MASK               	0x02
 #define ACP_TILE_ON_RETAIN_REG_MASK     	0x1f
@@ -289,11 +290,12 @@ static int acp_hw_init(void *handle)
 	r = amd_acp_hw_init(adev->acp.cgs_device,
 			    ip_block->version->major, ip_block->version->minor);
 	/* -ENODEV means board uses AZ rather than ACP */
-	if (r == -ENODEV)
+	if (r == -ENODEV) {
+		amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
 		return 0;
-	else if (r)
+	} else if (r) {
 		return r;
-
+	}
 	if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289)
 		return -EINVAL;
 
-- 
1.9.1