| 1 | // SPDX-License-Identifier: GPL-2.0-only |
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| 2 | /* Copyright(c) 2023 Intel Corporation */ |
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| 3 | #include <linux/debugfs.h> |
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| 4 | #include <linux/fs.h> |
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| 5 | #include <linux/kernel.h> |
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| 6 | |
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| 7 | #include "adf_accel_devices.h" |
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| 8 | #include "adf_pm_dbgfs.h" |
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| 9 | |
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| 10 | static ssize_t pm_status_read(struct file *f, char __user *buf, size_t count, |
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| 11 | loff_t *pos) |
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| 12 | { |
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| 13 | struct adf_accel_dev *accel_dev = file_inode(f)->i_private; |
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| 14 | struct adf_pm pm = accel_dev->power_management; |
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| 15 | |
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| 16 | if (pm.print_pm_status) |
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| 17 | return pm.print_pm_status(accel_dev, buf, count, pos); |
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| 18 | |
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| 19 | return count; |
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| 20 | } |
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| 21 | |
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| 22 | static const struct file_operations pm_status_fops = { |
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| 23 | .owner = THIS_MODULE, |
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| 24 | .read = pm_status_read, |
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| 25 | }; |
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| 26 | |
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| 27 | void adf_pm_dbgfs_add(struct adf_accel_dev *accel_dev) |
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| 28 | { |
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| 29 | struct adf_pm *pm = &accel_dev->power_management; |
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| 30 | |
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| 31 | if (!pm->present || !pm->print_pm_status) |
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| 32 | return; |
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| 33 | |
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| 34 | pm->debugfs_pm_status = debugfs_create_file("pm_status" , 0400, |
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| 35 | accel_dev->debugfs_dir, |
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| 36 | accel_dev, &pm_status_fops); |
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| 37 | } |
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| 38 | |
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| 39 | void adf_pm_dbgfs_rm(struct adf_accel_dev *accel_dev) |
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| 40 | { |
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| 41 | struct adf_pm *pm = &accel_dev->power_management; |
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| 42 | |
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| 43 | if (!pm->present) |
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| 44 | return; |
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| 45 | |
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| 46 | debugfs_remove(dentry: pm->debugfs_pm_status); |
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| 47 | pm->debugfs_pm_status = NULL; |
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| 48 | } |
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| 49 | |
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