diff options
Diffstat (limited to 'drivers/hwmon/hwmon.c')
| -rw-r--r-- | drivers/hwmon/hwmon.c | 54 |
1 files changed, 44 insertions, 10 deletions
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index 3501a3ead4ba..989e2c8496dd 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -18,6 +18,7 @@ #include <linux/list.h> #include <linux/module.h> #include <linux/pci.h> +#include <linux/property.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/thermal.h> @@ -30,6 +31,7 @@ struct hwmon_device { const char *name; + const char *label; struct device dev; const struct hwmon_chip_info *chip; struct list_head tzdata; @@ -71,17 +73,29 @@ name_show(struct device *dev, struct device_attribute *attr, char *buf) } static DEVICE_ATTR_RO(name); +static ssize_t +label_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sysfs_emit(buf, "%s\n", to_hwmon_device(dev)->label); +} +static DEVICE_ATTR_RO(label); + static struct attribute *hwmon_dev_attrs[] = { &dev_attr_name.attr, + &dev_attr_label.attr, NULL }; -static umode_t hwmon_dev_name_is_visible(struct kobject *kobj, +static umode_t hwmon_dev_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) { struct device *dev = kobj_to_dev(kobj); + struct hwmon_device *hdev = to_hwmon_device(dev); - if (to_hwmon_device(dev)->name == NULL) + if (attr == &dev_attr_name.attr && hdev->name == NULL) + return 0; + + if (attr == &dev_attr_label.attr && hdev->label == NULL) return 0; return attr->mode; @@ -89,7 +103,7 @@ static umode_t hwmon_dev_name_is_visible(struct kobject *kobj, static const struct attribute_group hwmon_dev_attr_group = { .attrs = hwmon_dev_attrs, - .is_visible = hwmon_dev_name_is_visible, + .is_visible = hwmon_dev_attr_is_visible, }; static const struct attribute_group *hwmon_dev_attr_groups[] = { @@ -117,6 +131,7 @@ static void hwmon_dev_release(struct device *dev) if (hwdev->group.attrs) hwmon_free_attrs(hwdev->group.attrs); kfree(hwdev->groups); + kfree(hwdev->label); kfree(hwdev); } @@ -214,12 +229,14 @@ static int hwmon_thermal_add_sensor(struct device *dev, int index) tzd = devm_thermal_zone_of_sensor_register(dev, index, tdata, &hwmon_thermal_ops); - /* - * If CONFIG_THERMAL_OF is disabled, this returns -ENODEV, - * so ignore that error but forward any other error. - */ - if (IS_ERR(tzd) && (PTR_ERR(tzd) != -ENODEV)) - return PTR_ERR(tzd); + if (IS_ERR(tzd)) { + if (PTR_ERR(tzd) != -ENODEV) + return PTR_ERR(tzd); + dev_info(dev, "temp%d_input not attached to any thermal zone\n", + index + 1); + devm_kfree(dev, tdata); + return 0; + } err = devm_add_action(dev, hwmon_thermal_remove_sensor, &tdata->node); if (err) @@ -587,6 +604,7 @@ static const char * const hwmon_pwm_attr_templates[] = { [hwmon_pwm_enable] = "pwm%d_enable", [hwmon_pwm_mode] = "pwm%d_mode", [hwmon_pwm_freq] = "pwm%d_freq", + [hwmon_pwm_auto_channels_temp] = "pwm%d_auto_channels_temp", }; static const char * const hwmon_intrusion_attr_templates[] = { @@ -623,7 +641,9 @@ static const int __templates_size[] = { int hwmon_notify_event(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel) { + char event[MAX_SYSFS_ATTR_NAME_LENGTH + 5]; char sattr[MAX_SYSFS_ATTR_NAME_LENGTH]; + char *envp[] = { event, NULL }; const char * const *templates; const char *template; int base; @@ -639,8 +659,9 @@ int hwmon_notify_event(struct device *dev, enum hwmon_sensor_types type, base = hwmon_attr_base(type); scnprintf(sattr, MAX_SYSFS_ATTR_NAME_LENGTH, template, base + channel); + scnprintf(event, sizeof(event), "NAME=%s", sattr); sysfs_notify(&dev->kobj, NULL, sattr); - kobject_uevent(&dev->kobj, KOBJ_CHANGE); + kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); if (type == hwmon_temp) hwmon_thermal_notify(dev, channel); @@ -733,6 +754,7 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata, const struct attribute_group **groups) { struct hwmon_device *hwdev; + const char *label; struct device *hdev; int i, err, id; @@ -788,6 +810,18 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata, hdev->groups = groups; } + if (dev && device_property_present(dev, "label")) { + err = device_property_read_string(dev, "label", &label); + if (err < 0) + goto free_hwmon; + + hwdev->label = kstrdup(label, GFP_KERNEL); + if (hwdev->label == NULL) { + err = -ENOMEM; + goto free_hwmon; + } + } + hwdev->name = name; hdev->class = &hwmon_class; hdev->parent = dev; |