ACPI / fan: convert to platform driver
Convert ACPI fan driver to a platform driver for the purpose of phasing
out ACPI bus.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index fff9696..8a5b450 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -30,17 +30,14 @@
#include <asm/uaccess.h>
#include <linux/thermal.h>
#include <linux/acpi.h>
-
-#define PREFIX "ACPI: "
-
-#define ACPI_FAN_CLASS "fan"
+#include <linux/platform_device.h>
MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION("ACPI Fan Driver");
MODULE_LICENSE("GPL");
-static int acpi_fan_add(struct acpi_device *device);
-static int acpi_fan_remove(struct acpi_device *device);
+static int acpi_fan_probe(struct platform_device *pdev);
+static int acpi_fan_remove(struct platform_device *pdev);
static const struct acpi_device_id fan_device_ids[] = {
{"PNP0C0B", 0},
@@ -62,15 +59,14 @@
#define FAN_PM_OPS_PTR NULL
#endif
-static struct acpi_driver acpi_fan_driver = {
- .name = "fan",
- .class = ACPI_FAN_CLASS,
- .ids = fan_device_ids,
- .ops = {
- .add = acpi_fan_add,
- .remove = acpi_fan_remove,
- },
- .drv.pm = FAN_PM_OPS_PTR,
+static struct platform_driver acpi_fan_driver = {
+ .probe = acpi_fan_probe,
+ .remove = acpi_fan_remove,
+ .driver = {
+ .name = "acpi-fan",
+ .acpi_match_table = fan_device_ids,
+ .pm = FAN_PM_OPS_PTR,
+ },
};
/* thermal cooling device callbacks */
@@ -126,17 +122,15 @@
Driver Interface
-------------------------------------------------------------------------- */
-static int acpi_fan_add(struct acpi_device *device)
+static int acpi_fan_probe(struct platform_device *pdev)
{
int result = 0;
struct thermal_cooling_device *cdev;
-
- strcpy(acpi_device_name(device), "Fan");
- strcpy(acpi_device_class(device), ACPI_FAN_CLASS);
+ struct acpi_device *device = ACPI_COMPANION(&pdev->dev);
result = acpi_device_update_power(device, NULL);
if (result) {
- printk(KERN_ERR PREFIX "Setting initial power state\n");
+ dev_err(&pdev->dev, "Setting initial power state\n");
goto end;
}
@@ -147,24 +141,24 @@
goto end;
}
- dev_dbg(&device->dev, "registered as cooling_device%d\n", cdev->id);
+ dev_dbg(&pdev->dev, "registered as cooling_device%d\n", cdev->id);
- device->driver_data = cdev;
- result = sysfs_create_link(&device->dev.kobj,
+ platform_set_drvdata(pdev, cdev);
+ result = sysfs_create_link(&pdev->dev.kobj,
&cdev->device.kobj,
"thermal_cooling");
if (result)
- dev_err(&device->dev, "Failed to create sysfs link "
+ dev_err(&pdev->dev, "Failed to create sysfs link "
"'thermal_cooling'\n");
result = sysfs_create_link(&cdev->device.kobj,
- &device->dev.kobj,
+ &pdev->dev.kobj,
"device");
if (result)
- dev_err(&device->dev, "Failed to create sysfs link "
+ dev_err(&pdev->dev, "Failed to create sysfs link "
"'device'\n");
- printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
+ dev_info(&pdev->dev, "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
!device->power.state ? "on" : "off");
@@ -172,11 +166,11 @@
return result;
}
-static int acpi_fan_remove(struct acpi_device *device)
+static int acpi_fan_remove(struct platform_device *pdev)
{
- struct thermal_cooling_device *cdev = acpi_driver_data(device);
+ struct thermal_cooling_device *cdev = platform_get_drvdata(pdev);
- sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+ sysfs_remove_link(&pdev->dev.kobj, "thermal_cooling");
sysfs_remove_link(&cdev->device.kobj, "device");
thermal_cooling_device_unregister(cdev);
@@ -186,7 +180,7 @@
#ifdef CONFIG_PM_SLEEP
static int acpi_fan_suspend(struct device *dev)
{
- acpi_device_set_power(to_acpi_device(dev), ACPI_STATE_D0);
+ acpi_device_set_power(ACPI_COMPANION(dev), ACPI_STATE_D0);
return AE_OK;
}
@@ -195,12 +189,12 @@
{
int result;
- result = acpi_device_update_power(to_acpi_device(dev), NULL);
+ result = acpi_device_update_power(ACPI_COMPANION(dev), NULL);
if (result)
- printk(KERN_ERR PREFIX "Error updating fan power state\n");
+ dev_err(dev, "Error updating fan power state\n");
return result;
}
#endif
-module_acpi_driver(acpi_fan_driver);
+module_platform_driver(acpi_fan_driver);