Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Srinivas Pandruvada | 895 | 100.00% | 2 | 100.00% |
Total | 895 | 2 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * fan_attr.c - Create extra attributes for ACPI Fan driver * * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> * Copyright (C) 2022 Intel Corporation. All rights reserved. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/acpi.h> #include "fan.h" MODULE_LICENSE("GPL"); static ssize_t show_state(struct device *dev, struct device_attribute *attr, char *buf) { struct acpi_fan_fps *fps = container_of(attr, struct acpi_fan_fps, dev_attr); int count; if (fps->control == 0xFFFFFFFF || fps->control > 100) count = scnprintf(buf, PAGE_SIZE, "not-defined:"); else count = scnprintf(buf, PAGE_SIZE, "%lld:", fps->control); if (fps->trip_point == 0xFFFFFFFF || fps->trip_point > 9) count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:"); else count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->trip_point); if (fps->speed == 0xFFFFFFFF) count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:"); else count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->speed); if (fps->noise_level == 0xFFFFFFFF) count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined:"); else count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld:", fps->noise_level * 100); if (fps->power == 0xFFFFFFFF) count += scnprintf(&buf[count], PAGE_SIZE - count, "not-defined\n"); else count += scnprintf(&buf[count], PAGE_SIZE - count, "%lld\n", fps->power); return count; } static ssize_t show_fan_speed(struct device *dev, struct device_attribute *attr, char *buf) { struct acpi_device *acpi_dev = container_of(dev, struct acpi_device, dev); struct acpi_fan_fst fst; int status; status = acpi_fan_get_fst(acpi_dev, &fst); if (status) return status; return sprintf(buf, "%lld\n", fst.speed); } static ssize_t show_fine_grain_control(struct device *dev, struct device_attribute *attr, char *buf) { struct acpi_device *acpi_dev = container_of(dev, struct acpi_device, dev); struct acpi_fan *fan = acpi_driver_data(acpi_dev); return sprintf(buf, "%d\n", fan->fif.fine_grain_ctrl); } int acpi_fan_create_attributes(struct acpi_device *device) { struct acpi_fan *fan = acpi_driver_data(device); int i, status; sysfs_attr_init(&fan->fine_grain_control.attr); fan->fine_grain_control.show = show_fine_grain_control; fan->fine_grain_control.store = NULL; fan->fine_grain_control.attr.name = "fine_grain_control"; fan->fine_grain_control.attr.mode = 0444; status = sysfs_create_file(&device->dev.kobj, &fan->fine_grain_control.attr); if (status) return status; /* _FST is present if we are here */ sysfs_attr_init(&fan->fst_speed.attr); fan->fst_speed.show = show_fan_speed; fan->fst_speed.store = NULL; fan->fst_speed.attr.name = "fan_speed_rpm"; fan->fst_speed.attr.mode = 0444; status = sysfs_create_file(&device->dev.kobj, &fan->fst_speed.attr); if (status) goto rem_fine_grain_attr; for (i = 0; i < fan->fps_count; ++i) { struct acpi_fan_fps *fps = &fan->fps[i]; snprintf(fps->name, ACPI_FPS_NAME_LEN, "state%d", i); sysfs_attr_init(&fps->dev_attr.attr); fps->dev_attr.show = show_state; fps->dev_attr.store = NULL; fps->dev_attr.attr.name = fps->name; fps->dev_attr.attr.mode = 0444; status = sysfs_create_file(&device->dev.kobj, &fps->dev_attr.attr); if (status) { int j; for (j = 0; j < i; ++j) sysfs_remove_file(&device->dev.kobj, &fan->fps[j].dev_attr.attr); goto rem_fst_attr; } } return 0; rem_fst_attr: sysfs_remove_file(&device->dev.kobj, &fan->fst_speed.attr); rem_fine_grain_attr: sysfs_remove_file(&device->dev.kobj, &fan->fine_grain_control.attr); return status; } void acpi_fan_delete_attributes(struct acpi_device *device) { struct acpi_fan *fan = acpi_driver_data(device); int i; for (i = 0; i < fan->fps_count; ++i) sysfs_remove_file(&device->dev.kobj, &fan->fps[i].dev_attr.attr); sysfs_remove_file(&device->dev.kobj, &fan->fst_speed.attr); sysfs_remove_file(&device->dev.kobj, &fan->fine_grain_control.attr); }
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