[PATCH 2/2] drm/amdgpu: when suspend, set boot state instand of disable dpm.

[Rex Zhu]

fix pm-hibernat bug, when suspend/resume, dpm start failed.

Change-Id: I03784f0049563b11721ebe905d9bea40ecc82170
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/ci_dpm.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
index 966e5bf..27b1fb4 100644
--- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
@@ -5276,7 +5276,7 @@ static int ci_dpm_enable(struct amdgpu_device *adev)
 	int ret;
 
 	if (amdgpu_ci_is_smc_running(adev))
-		return -EINVAL;
+		return 0;
 	if (pi->voltage_control != CISLANDS_VOLTAGE_CONTROL_NONE) {
 		ci_enable_voltage_control(adev);
 		ret = ci_construct_voltage_tables(adev);
@@ -6345,12 +6345,17 @@ static int ci_dpm_suspend(void *handle)
 
 	if (adev->pm.dpm_enabled) {
 		mutex_lock(&adev->pm.mutex);
-		/* disable dpm */
-		ci_dpm_disable(adev);
-		/* reset the power state */
-		adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps;
+		amdgpu_irq_put(adev, &adev->pm.dpm.thermal.irq,
+			       AMDGPU_THERMAL_IRQ_LOW_TO_HIGH);
+		amdgpu_irq_put(adev, &adev->pm.dpm.thermal.irq,
+			       AMDGPU_THERMAL_IRQ_HIGH_TO_LOW);
+		adev->pm.dpm.user_state = POWER_STATE_TYPE_INTERNAL_BOOT;
+		adev->pm.dpm.state = POWER_STATE_TYPE_INTERNAL_BOOT;
 		mutex_unlock(&adev->pm.mutex);
+		amdgpu_pm_compute_clocks(adev);
+
 	}
+
 	return 0;
 }
 
@@ -6368,6 +6373,8 @@ static int ci_dpm_resume(void *handle)
 			adev->pm.dpm_enabled = false;
 		else
 			adev->pm.dpm_enabled = true;
+		adev->pm.dpm.user_state = POWER_STATE_TYPE_BALANCED;
+		adev->pm.dpm.state = POWER_STATE_TYPE_BALANCED;
 		mutex_unlock(&adev->pm.mutex);
 		if (adev->pm.dpm_enabled)
 			amdgpu_pm_compute_clocks(adev);
-- 
1.9.1