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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/acpi/fan_attr.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/acpi/fan_attr.c')
-rw-r--r--drivers/acpi/fan_attr.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/acpi/fan_attr.c b/drivers/acpi/fan_attr.c
new file mode 100644
index 0000000000..f4f6e2381f
--- /dev/null
+++ b/drivers/acpi/fan_attr.c
@@ -0,0 +1,137 @@
+// 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 += sysfs_emit_at(buf, count, "not-defined:");
+ else
+ count += sysfs_emit_at(buf, count, "%lld:", fps->trip_point);
+
+ if (fps->speed == 0xFFFFFFFF)
+ count += sysfs_emit_at(buf, count, "not-defined:");
+ else
+ count += sysfs_emit_at(buf, count, "%lld:", fps->speed);
+
+ if (fps->noise_level == 0xFFFFFFFF)
+ count += sysfs_emit_at(buf, count, "not-defined:");
+ else
+ count += sysfs_emit_at(buf, count, "%lld:", fps->noise_level * 100);
+
+ if (fps->power == 0xFFFFFFFF)
+ count += sysfs_emit_at(buf, count, "not-defined\n");
+ else
+ count += sysfs_emit_at(buf, 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);
+}