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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2019-2021 HabanaLabs, Ltd.
* All Rights Reserved.
*/
#include "habanalabs.h"
void hl_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
{
hl_set_frequency(hdev, hdev->asic_prop.clk_pll_index,
hdev->asic_prop.max_freq_value);
}
int hl_get_clk_rate(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk)
{
long value;
if (!hl_device_operational(hdev, NULL))
return -ENODEV;
value = hl_get_frequency(hdev, hdev->asic_prop.clk_pll_index, false);
if (value < 0) {
dev_err(hdev->dev, "Failed to retrieve device max clock %ld\n",
value);
return value;
}
*max_clk = (value / 1000 / 1000);
value = hl_get_frequency(hdev, hdev->asic_prop.clk_pll_index, true);
if (value < 0) {
dev_err(hdev->dev,
"Failed to retrieve device current clock %ld\n",
value);
return value;
}
*cur_clk = (value / 1000 / 1000);
return 0;
}
static ssize_t clk_max_freq_mhz_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (!hl_device_operational(hdev, NULL))
return -ENODEV;
value = hl_get_frequency(hdev, hdev->asic_prop.clk_pll_index, false);
hdev->asic_prop.max_freq_value = value;
return sprintf(buf, "%lu\n", (value / 1000 / 1000));
}
static ssize_t clk_max_freq_mhz_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
int rc;
u64 value;
if (!hl_device_operational(hdev, NULL)) {
count = -ENODEV;
goto fail;
}
rc = kstrtoull(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto fail;
}
hdev->asic_prop.max_freq_value = value * 1000 * 1000;
hl_set_frequency(hdev, hdev->asic_prop.clk_pll_index,
hdev->asic_prop.max_freq_value);
fail:
return count;
}
static ssize_t clk_cur_freq_mhz_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (!hl_device_operational(hdev, NULL))
return -ENODEV;
value = hl_get_frequency(hdev, hdev->asic_prop.clk_pll_index, true);
return sprintf(buf, "%lu\n", (value / 1000 / 1000));
}
static DEVICE_ATTR_RW(clk_max_freq_mhz);
static DEVICE_ATTR_RO(clk_cur_freq_mhz);
static struct attribute *hl_dev_attrs[] = {
&dev_attr_clk_max_freq_mhz.attr,
&dev_attr_clk_cur_freq_mhz.attr,
NULL,
};
void hl_add_device_attr(struct hl_device *hdev,
struct attribute_group *dev_attr_grp)
{
dev_attr_grp->attrs = hl_dev_attrs;
}
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