Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
platform/x86: alienware-wmi-wmax: Add a DebugFS interface
Add a debugfs interface which exposes thermal private data.
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250329-hwm-v7-9-a14ea39d8a94@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
authored by
Kurt Borja
and committed by
Ilpo Järvinen
b028fb49
07ac2759
+90
+90
drivers/platform/x86/dell/alienware-wmi-wmax.c
+90
drivers/platform/x86/dell/alienware-wmi-wmax.c
···
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#include <linux/bitfield.h>
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#include <linux/bitmap.h>
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#include <linux/bits.h>
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#include <linux/debugfs.h>
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#include <linux/dmi.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/moduleparam.h>
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#include <linux/platform_profile.h>
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#include <linux/pm.h>
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#include <linux/seq_file.h>
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#include <linux/units.h>
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#include <linux/wmi.h>
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#include "alienware-wmi.h"
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return PTR_ERR_OR_ZERO(priv->ppdev);
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}
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/*
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* DebugFS
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*/
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static int awcc_debugfs_system_description_read(struct seq_file *seq, void *data)
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{
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struct device *dev = seq->private;
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struct awcc_priv *priv = dev_get_drvdata(dev);
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seq_printf(seq, "0x%08x\n", priv->system_description);
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return 0;
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}
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static int awcc_debugfs_hwmon_data_read(struct seq_file *seq, void *data)
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{
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struct device *dev = seq->private;
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struct awcc_priv *priv = dev_get_drvdata(dev);
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const struct awcc_fan_data *fan;
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unsigned int bit;
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seq_printf(seq, "Number of fans: %u\n", priv->fan_count);
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seq_printf(seq, "Number of temperature sensors: %u\n\n", priv->temp_count);
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for (u32 i = 0; i < priv->fan_count; i++) {
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fan = priv->fan_data[i];
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seq_printf(seq, "Fan %u:\n", i);
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seq_printf(seq, " ID: 0x%02x\n", fan->id);
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seq_printf(seq, " Related temperature sensors bitmap: %lu\n",
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fan->auto_channels_temp);
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}
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seq_puts(seq, "\nTemperature sensor IDs:\n");
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for_each_set_bit(bit, priv->temp_sensors, AWCC_ID_BITMAP_SIZE)
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seq_printf(seq, " 0x%02x\n", bit);
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return 0;
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}
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static int awcc_debugfs_pprof_data_read(struct seq_file *seq, void *data)
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{
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struct device *dev = seq->private;
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struct awcc_priv *priv = dev_get_drvdata(dev);
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seq_printf(seq, "Number of thermal profiles: %u\n\n", priv->profile_count);
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for (u32 i = 0; i < PLATFORM_PROFILE_LAST; i++) {
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if (!priv->supported_profiles[i])
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continue;
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seq_printf(seq, "Platform profile %u:\n", i);
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seq_printf(seq, " ID: 0x%02x\n", priv->supported_profiles[i]);
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}
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return 0;
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}
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static void awcc_debugfs_remove(void *data)
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{
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struct dentry *root = data;
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debugfs_remove(root);
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}
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static void awcc_debugfs_init(struct wmi_device *wdev)
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{
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struct dentry *root;
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char name[64];
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scnprintf(name, sizeof(name), "%s-%s", "alienware-wmi", dev_name(&wdev->dev));
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root = debugfs_create_dir(name, NULL);
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debugfs_create_devm_seqfile(&wdev->dev, "system_description", root,
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awcc_debugfs_system_description_read);
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if (awcc->hwmon)
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debugfs_create_devm_seqfile(&wdev->dev, "hwmon_data", root,
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awcc_debugfs_hwmon_data_read);
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if (awcc->pprof)
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debugfs_create_devm_seqfile(&wdev->dev, "pprof_data", root,
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awcc_debugfs_pprof_data_read);
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devm_add_action_or_reset(&wdev->dev, awcc_debugfs_remove, root);
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}
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static int alienware_awcc_setup(struct wmi_device *wdev)
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{
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struct awcc_priv *priv;
···
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if (ret)
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return ret;
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}
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awcc_debugfs_init(wdev);
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return 0;
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}