#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;
acpi_fan_dir);
if (!acpi_device_dir(device))
return -ENODEV;
- acpi_device_dir(device)->owner = THIS_MODULE;
}
/* 'status' [R/W] */
goto end;
}
- dev_info(&device->dev, "registered as cooling_device%d\n", cdev->id);
+ dev_dbg(&device->dev, "registered as cooling_device%d\n", cdev->id);
- acpi_driver_data(device) = cdev;
+ device->driver_data = cdev;
result = sysfs_create_link(&device->dev.kobj,
&cdev->device.kobj,
"thermal_cooling");
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);