[PATCH 4/7] drm/amdgpu: add an implement for check_power_state equal for Cz.

[Rex Zhu]

Change-Id: I00186c6d316c22fdf065fd8525e927dd2ee79685
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/cz_dpm.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/cz_dpm.c b/drivers/gpu/drm/amd/amdgpu/cz_dpm.c
index f80a083..1ae2b95 100644
--- a/drivers/gpu/drm/amd/amdgpu/cz_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_dpm.c
@@ -2255,6 +2255,18 @@ static void cz_dpm_powergate_vce(struct amdgpu_device *adev, bool gate)
 	}
 }
 
+static int cz_check_state_equal(struct amdgpu_device *adev,
+				struct amdgpu_ps *cps,
+				struct amdgpu_ps *rps,
+				bool *equal)
+{
+	if (equal == NULL)
+		return -EINVAL;
+
+	*equal = false;
+	return 0;
+}
+
 const struct amd_ip_funcs cz_dpm_ip_funcs = {
 	.name = "cz_dpm",
 	.early_init = cz_dpm_early_init,
@@ -2287,6 +2299,7 @@ static const struct amdgpu_dpm_funcs cz_dpm_funcs = {
 	.vblank_too_short = NULL,
 	.powergate_uvd = cz_dpm_powergate_uvd,
 	.powergate_vce = cz_dpm_powergate_vce,
+	.check_state_equal = cz_check_state_equal,
 };
 
 static void cz_dpm_set_funcs(struct amdgpu_device *adev)
-- 
1.9.1