[AMD Official Use Only - Internal Distribution Only]
Reviewed-by: Feifei Xu <feifei...@amd.com>
-----Original Message-----
From: Chengming Gui <jack....@amd.com>
Sent: 2020年2月14日 19:33
To: amd-gfx@lists.freedesktop.org
Cc: Quan, Evan <evan.q...@amd.com>; Feng, Kenneth <kenneth.f...@amd.com>; Xu,
Feifei <feifei...@amd.com>; Gui, Jack <jack....@amd.com>
Subject: [PATCH] drm/amdgpu: add sysfs interface to set arbitrary sclk value
for navi14
Add sysfs interface for arbitrary clock setting pp_sclk - amdgpu_set_pp_sclk
Signed-off-by: Chengming Gui <jack....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 42 +++++++++++++++++++++++++++++++
drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 9 +++++--
2 files changed, 49 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index b03b1eb..e32a1e1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -1036,6 +1036,40 @@ static ssize_t amdgpu_read_mask(const char *buf, size_t
count, uint32_t *mask)
return 0;
}
+static ssize_t amdgpu_set_pp_sclk(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct drm_device *ddev = dev_get_drvdata(dev);
+ struct amdgpu_device *adev = ddev->dev_private;
+ int ret;
+ uint32_t value;
+
+ if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev))
+ return -EINVAL;
+
+ ret = pm_runtime_get_sync(ddev->dev);
+ if (ret < 0)
+ return ret;
+
+ ret = kstrtou32(buf, 0, &value);
+ if (ret < 0)
+ return ret;
+ if (is_support_sw_smu(adev))
+ ret = smu_set_soft_freq_range(&adev->smu, SMU_SCLK, value,
value);
+ else
+ return 0;
+
+ pm_runtime_mark_last_busy(ddev->dev);
+ pm_runtime_put_autosuspend(ddev->dev);
+
+ if (ret)
+ return -EINVAL;
+
+ return count;
+}
+
static ssize_t amdgpu_set_pp_dpm_sclk(struct device *dev,
struct device_attribute *attr,
const char *buf,
@@ -1797,6 +1831,8 @@ static DEVICE_ATTR(pp_force_state, S_IRUGO | S_IWUSR,
static DEVICE_ATTR(pp_table, S_IRUGO | S_IWUSR,
amdgpu_get_pp_table,
amdgpu_set_pp_table);
+static DEVICE_ATTR(pp_sclk, S_IWUSR,
+ NULL, amdgpu_set_pp_sclk);
static DEVICE_ATTR(pp_dpm_sclk, S_IRUGO | S_IWUSR,
amdgpu_get_pp_dpm_sclk,
amdgpu_set_pp_dpm_sclk);
@@ -3288,6 +3324,12 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
return ret;
}
+ ret = device_create_file(adev->dev, &dev_attr_pp_sclk);
+ if (ret) {
+ DRM_ERROR("failed to create device file pp_sclk\n");
+ return ret;
+ }
+
ret = device_create_file(adev->dev, &dev_attr_pp_dpm_sclk);
if (ret) {
DRM_ERROR("failed to create device file pp_dpm_sclk\n"); diff
--git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index b06c057..9d15acf 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1799,12 +1799,17 @@ int smu_v11_0_set_soft_freq_limited_range(struct
smu_context *smu, enum smu_clk_ {
int ret = 0, clk_id = 0;
uint32_t param;
+ uint32_t min_freq, max_freq;
clk_id = smu_clk_get_index(smu, clk_type);
if (clk_id < 0)
return clk_id;
- if (max > 0) {
+ ret = smu_get_dpm_freq_range(smu, clk_type, &min_freq, &max_freq, true);
+ if (ret)
+ return ret;
+
+ if (max > 0 && max <= max_freq) {
param = (uint32_t)((clk_id << 16) | (max & 0xffff));
ret = smu_send_smc_msg_with_param(smu, SMU_MSG_SetSoftMaxByFreq,
param);
@@ -1812,7 +1817,7 @@ int smu_v11_0_set_soft_freq_limited_range(struct
smu_context *smu, enum smu_clk_
return ret;
}
- if (min > 0) {
+ if (min > 0 && min >= min_freq) {
param = (uint32_t)((clk_id << 16) | (min & 0xffff));
ret = smu_send_smc_msg_with_param(smu, SMU_MSG_SetSoftMinByFreq,
param);
--
2.7.4
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