From: Rex Zhu <Rex.Zhu@amd.com>
Date: Thu, 8 Dec 2016 02:58:15 +0000 (+0800)
Subject: drm/amdgpu: add drm light sleep support for Vi
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f6f534e2af5b518f522b5df244accf945a6207ec;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drm/amdgpu: add drm light sleep support for Vi

v2: fix copy error.

Signed-off-by: Rex Zhu <Rex.Zhu@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/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c
index bb6eacb6b23d..fbb7d8bf5a58 100644
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -1177,6 +1177,23 @@ static void vi_update_hdp_light_sleep(struct amdgpu_device *adev,
 		WREG32(mmHDP_MEM_POWER_LS, data);
 }
 
+static void vi_update_drm_light_sleep(struct amdgpu_device *adev,
+				      bool enable)
+{
+	uint32_t temp, data;
+
+	temp = data = RREG32(0x157a);
+
+	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_DRM_LS))
+		data |= 1;
+	else
+		data &= ~1;
+
+	if (temp != data)
+		WREG32(0x157a, data);
+}
+
+
 static void vi_update_rom_medium_grain_clock_gating(struct amdgpu_device *adev,
 						    bool enable)
 {
@@ -1337,6 +1354,8 @@ static int vi_common_set_clockgating_state(void *handle,
 				state == AMD_CG_STATE_GATE ? true : false);
 		vi_update_hdp_light_sleep(adev,
 				state == AMD_CG_STATE_GATE ? true : false);
+		vi_update_drm_light_sleep(adev,
+				state == AMD_CG_STATE_GATE ? true : false);
 		break;
 	case CHIP_TONGA:
 	case CHIP_POLARIS10: