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Commit aaf4ee3c authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu/tonga: don't call smu_init on resume 



smu_init allocates buffers and initializes them.  It does not
touch the hw.  There is no need to do it again on resume.  It
should really be part of sw_init (and smu_fini should be part
of sw_fini), but we need the firmware sizes from the other IPs
for firmware loading so we have to wait until sw init is done
for all other IPs.

Reviewed-by: default avatarSonny Jiang <Sonny.Jiang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 05188312

drivers/gpu/drm/amd/amdgpu/tonga_dpm.c

+19 −6
Original line number Diff line number Diff line
@@ -81,6 +81,10 @@ static int tonga_dpm_hw_init(void *handle) 


	mutex_lock(&adev->pm.mutex);



	/* smu init only needs to be called at startup, not resume.

	 * It should be in sw_init, but requires the fw info gathered

	 * in sw_init from other IP modules.

	 */

	ret = tonga_smu_init(adev);

	if (ret) {

		DRM_ERROR("SMU initialization failed\n");
@@ -107,6 +111,10 @@ static int tonga_dpm_hw_fini(void *handle) 
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;



	mutex_lock(&adev->pm.mutex);

	/* smu fini only needs to be called at teardown, not suspend.

	 * It should be in sw_fini, but we put it here for symmetry

	 * with smu init.

	 */

	tonga_smu_fini(adev);

	mutex_unlock(&adev->pm.mutex);

	return 0;
@@ -114,20 +122,25 @@ static int tonga_dpm_hw_fini(void *handle) 


static int tonga_dpm_suspend(void *handle)

{

	struct amdgpu_device *adev = (struct amdgpu_device *)handle;



	tonga_dpm_hw_fini(adev);



	return 0;

}



static int tonga_dpm_resume(void *handle)

{

	int ret;

	struct amdgpu_device *adev = (struct amdgpu_device *)handle;



	tonga_dpm_hw_init(adev);

	mutex_lock(&adev->pm.mutex);



	return 0;

	ret = tonga_smu_start(adev);

	if (ret) {

		DRM_ERROR("SMU start failed\n");

		goto fail;

	}



fail:

	mutex_unlock(&adev->pm.mutex);

	return ret;

}



static int tonga_dpm_set_clockgating_state(void *handle,