#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_FAN_COMPONENT 0x00200000
+#define PREFIX "ACPI: "
+
#define ACPI_FAN_CLASS "fan"
#define ACPI_FAN_FILE_STATE "state"
};
/* thermal cooling device callbacks */
-static int fan_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+static int fan_get_max_state(struct thermal_cooling_device *cdev, unsigned long
+ *state)
{
/* ACPI fan device only support two states: ON/OFF */
- return sprintf(buf, "1\n");
+ *state = 1;
+ return 0;
}
-static int fan_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long
+ *state)
{
struct acpi_device *device = cdev->devdata;
- int state;
int result;
+ int acpi_state;
if (!device)
return -EINVAL;
- result = acpi_bus_get_power(device->handle, &state);
+ result = acpi_bus_get_power(device->handle, &acpi_state);
if (result)
return result;
- return sprintf(buf, "%s\n", state == ACPI_STATE_D3 ? "0" :
- (state == ACPI_STATE_D0 ? "1" : "unknown"));
+ *state = (acpi_state == ACPI_STATE_D3 ? 0 :
+ (acpi_state == ACPI_STATE_D0 ? 1 : -1));
+ return 0;
}
static int
-fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
{
struct acpi_device *device = cdev->devdata;
int result;
int result = 0;
struct seq_file *m = file->private_data;
struct acpi_device *device = m->private;
- char state_string[12] = { '\0' };
+ char state_string[3] = { '\0' };
if (count > sizeof(state_string) - 1)
return -EINVAL;
return -EFAULT;
state_string[count] = '\0';
+ if ((state_string[0] < '0') || (state_string[0] > '3'))
+ return -EINVAL;
+ if (state_string[1] == '\n')
+ state_string[1] = '\0';
+ if (state_string[1] != '\0')
+ return -EINVAL;
result = acpi_bus_set_power(device->handle,
simple_strtoul(state_string, NULL, 0));
acpi_fan_dir);
if (!acpi_device_dir(device))
return -ENODEV;
- acpi_device_dir(device)->owner = THIS_MODULE;
}
/* 'status' [R/W] */
- entry = create_proc_entry(ACPI_FAN_FILE_STATE,
- S_IFREG | S_IRUGO | S_IWUSR,
- acpi_device_dir(device));
+ entry = proc_create_data(ACPI_FAN_FILE_STATE,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ acpi_device_dir(device),
+ &acpi_fan_state_ops,
+ device);
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_fan_state_ops;
- entry->data = device;
- entry->owner = THIS_MODULE;
- }
-
return 0;
}
cdev = thermal_cooling_device_register("Fan", device,
&fan_cooling_ops);
- if (cdev)
- printk(KERN_INFO PREFIX
- "%s is registered as cooling_device%d\n",
- device->dev.bus_id, cdev->id);
- else
+ if (IS_ERR(cdev)) {
+ result = PTR_ERR(cdev);
goto end;
- acpi_driver_data(device) = cdev;
- result = sysfs_create_link(&device->dev.kobj, &cdev->device.kobj,
- "thermal_cooling");
+ }
+
+ dev_dbg(&device->dev, "registered as cooling_device%d\n", cdev->id);
+
+ device->driver_data = cdev;
+ result = sysfs_create_link(&device->dev.kobj,
+ &cdev->device.kobj,
+ "thermal_cooling");
if (result)
- return result;
+ dev_err(&device->dev, "Failed to create sysfs link "
+ "'thermal_cooling'\n");
- result = sysfs_create_link(&cdev->device.kobj, &device->dev.kobj,
- "device");
- if (result)
- return result;
+ result = sysfs_create_link(&cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result)
+ dev_err(&device->dev, "Failed to create sysfs link "
+ "'device'\n");
result = acpi_fan_add_fs(device);
if (result)
result = acpi_bus_get_power(device->handle, &power_state);
if (result) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error reading fan power state\n"));
+ printk(KERN_ERR PREFIX
+ "Error reading fan power state\n");
return result;
}
acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
if (!acpi_fan_dir)
return -ENODEV;
- acpi_fan_dir->owner = THIS_MODULE;
#endif
result = acpi_bus_register_driver(&acpi_fan_driver);