mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
024b7b1d6d
Make the frequency set/get functionality common to all ASICs. This makes more code reusable when adding support for newer ASICs. Signed-off-by: Rajaravi Krishna Katta <rkatta@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
// 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;
|
|
}
|