Commit 0cf64555 authored by Chengming Gui's avatar Chengming Gui Committed by Alex Deucher
Browse files

drm/amdgpu: Add debugfs interface to set arbitrary sclk for navi14 (v2) 



add debugfs interface amdgpu_force_sclk
to set arbitrary sclk for navi14

v2: Add lock

Signed-off-by: default avatarChengming Gui <Jack.Gui@amd.com>
Reviewed-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 31faff1a

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

+43 −0
Original line number Diff line number Diff line
@@ -1257,9 +1257,43 @@ static int amdgpu_debugfs_ib_preempt(void *data, u64 val) 
	return 0;

}



static int amdgpu_debugfs_sclk_set(void *data, u64 val)

{

	int ret = 0;

	uint32_t max_freq, min_freq;

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



	if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev))

		return -EINVAL;



	ret = pm_runtime_get_sync(adev->ddev->dev);

	if (ret < 0)

		return ret;



	if (is_support_sw_smu(adev)) {

		ret = smu_get_dpm_freq_range(&adev->smu, SMU_SCLK, &min_freq, &max_freq, true);

		if (ret || val > max_freq || val < min_freq)

			return -EINVAL;

		ret = smu_set_soft_freq_range(&adev->smu, SMU_SCLK, (uint32_t)val, (uint32_t)val, true);

	} else {

		return 0;

	}



	pm_runtime_mark_last_busy(adev->ddev->dev);

	pm_runtime_put_autosuspend(adev->ddev->dev);



	if (ret)

		return -EINVAL;



	return 0;

}



DEFINE_SIMPLE_ATTRIBUTE(fops_ib_preempt, NULL,

			amdgpu_debugfs_ib_preempt, "%llu\n");



DEFINE_SIMPLE_ATTRIBUTE(fops_sclk_set, NULL,

			amdgpu_debugfs_sclk_set, "%llu\n");



int amdgpu_debugfs_init(struct amdgpu_device *adev)

{

	int r, i;
@@ -1273,6 +1307,15 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev) 
		return -EIO;

	}



	adev->smu.debugfs_sclk =

		debugfs_create_file("amdgpu_force_sclk", 0200,

				    adev->ddev->primary->debugfs_root, adev,

				    &fops_sclk_set);

	if (!(adev->smu.debugfs_sclk)) {

		DRM_ERROR("unable to create amdgpu_set_sclk debugsfs file\n");

		return -EIO;

	}



	/* Register debugfs entries for amdgpu_ttm */

	r = amdgpu_ttm_debugfs_init(adev);

	if (r) {

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

+3 −0
Original line number Diff line number Diff line
@@ -372,6 +372,9 @@ struct smu_context 
	struct amd_pp_display_configuration  *display_config;

	struct smu_baco_context		smu_baco;

	void *od_settings;

#if defined(CONFIG_DEBUG_FS)

	struct dentry                   *debugfs_sclk;

#endif



	uint32_t pstate_sclk;

	uint32_t pstate_mclk;