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

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add debugfs interface amdgpu_force_sclk
to set arbitrary sclk for navi14

v2: Add lock

Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chengming Gui 2020-02-27 12:44:22 +08:00 committed by Alex Deucher
parent 31faff1a1c
commit 0cf64555fe
2 changed files with 46 additions and 0 deletions
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43
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
View File

@ -1257,9 +1257,43 @@ failure:
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) {

3
drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
View File

@ -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;