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Commit cc8ef527 authored by Zhang Rui's avatar Zhang Rui Committed by Rafael J. Wysocki
Browse files

ACPI / AC: convert ACPI ac driver to platform bus 



Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 4a10c2ac

drivers/acpi/ac.c

+80 −83
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#endif

#include <linux/platform_device.h>

#include <linux/power_supply.h>

#include <acpi/acpi_bus.h>

#include <acpi/acpi_drivers.h>
@@ -61,39 +62,12 @@ extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); 
static int acpi_ac_open_fs(struct inode *inode, struct file *file);

#endif



static int acpi_ac_add(struct acpi_device *device);

static int acpi_ac_remove(struct acpi_device *device);

static void acpi_ac_notify(struct acpi_device *device, u32 event);



static const struct acpi_device_id ac_device_ids[] = {

	{"ACPI0003", 0},

	{"", 0},

};

MODULE_DEVICE_TABLE(acpi, ac_device_ids);



#ifdef CONFIG_PM_SLEEP

static int acpi_ac_resume(struct device *dev);

#endif

static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);



static int ac_sleep_before_get_state_ms;



static struct acpi_driver acpi_ac_driver = {

	.name = "ac",

	.class = ACPI_AC_CLASS,

	.ids = ac_device_ids,

	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,

	.ops = {

		.add = acpi_ac_add,

		.remove = acpi_ac_remove,

		.notify = acpi_ac_notify,

		},

	.drv.pm = &acpi_ac_pm,

};



struct acpi_ac {

	struct power_supply charger;

	struct acpi_device * device;

	struct acpi_device *adev;

	struct platform_device *pdev;

	unsigned long long state;

};
@@ -115,15 +89,13 @@ static const struct file_operations acpi_ac_fops = { 


static int acpi_ac_get_state(struct acpi_ac *ac)

{

	acpi_status status = AE_OK;

	acpi_status status;





	if (!ac)

		return -EINVAL;



	status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL, &ac->state);

	status = acpi_evaluate_integer(ac->adev->handle, "_PSR", NULL,

				       &ac->state);

	if (ACPI_FAILURE(status)) {

		ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state"));

		ACPI_EXCEPTION((AE_INFO, status,

				"Error reading AC Adapter state"));

		ac->state = ACPI_AC_STATUS_UNKNOWN;

		return -ENODEV;

	}
@@ -201,36 +173,36 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file) 
	return single_open(file, acpi_ac_seq_show, PDE_DATA(inode));

}



static int acpi_ac_add_fs(struct acpi_device *device)

static int acpi_ac_add_fs(struct acpi_ac *ac)

{

	struct proc_dir_entry *entry = NULL;



	printk(KERN_WARNING PREFIX "Deprecated procfs I/F for AC is loaded,"

			" please retry with CONFIG_ACPI_PROCFS_POWER cleared\n");

	if (!acpi_device_dir(device)) {

		acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),

						     acpi_ac_dir);

		if (!acpi_device_dir(device))

	if (!acpi_device_dir(ac->adev)) {

		acpi_device_dir(ac->adev) =

			proc_mkdir(acpi_device_bid(ac->adev), acpi_ac_dir);

		if (!acpi_device_dir(ac->adev))

			return -ENODEV;

	}



	/* 'state' [R] */

	entry = proc_create_data(ACPI_AC_FILE_STATE,

				 S_IRUGO, acpi_device_dir(device),

				 &acpi_ac_fops, acpi_driver_data(device));

				 S_IRUGO, acpi_device_dir(ac->adev),

				 &acpi_ac_fops, ac);

	if (!entry)

		return -ENODEV;

	return 0;

}



static int acpi_ac_remove_fs(struct acpi_device *device)

static int acpi_ac_remove_fs(struct acpi_ac *ac)

{



	if (acpi_device_dir(device)) {

		remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device));



		remove_proc_entry(acpi_device_bid(device), acpi_ac_dir);

		acpi_device_dir(device) = NULL;

	if (acpi_device_dir(ac->adev)) {

		remove_proc_entry(ACPI_AC_FILE_STATE,

				  acpi_device_dir(ac->adev));

		remove_proc_entry(acpi_device_bid(ac->adev), acpi_ac_dir);

		acpi_device_dir(ac->adev) = NULL;

	}



	return 0;
@@ -241,10 +213,9 @@ static int acpi_ac_remove_fs(struct acpi_device *device) 
                                   Driver Model

   -------------------------------------------------------------------------- */



static void acpi_ac_notify(struct acpi_device *device, u32 event)

static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data)

{

	struct acpi_ac *ac = acpi_driver_data(device);



	struct acpi_ac *ac = data;



	if (!ac)

		return;
@@ -267,10 +238,10 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event) 
			msleep(ac_sleep_before_get_state_ms);



		acpi_ac_get_state(ac);

		acpi_bus_generate_netlink_event(device->pnp.device_class,

						  dev_name(&device->dev), event,

						  (u32) ac->state);

		acpi_notifier_call_chain(device, event, (u32) ac->state);

		acpi_bus_generate_netlink_event(ac->adev->pnp.device_class,

						dev_name(&ac->pdev->dev),

						event, (u32) ac->state);

		acpi_notifier_call_chain(ac->adev, event, (u32) ac->state);

		kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);

	}
@@ -295,50 +266,61 @@ static struct dmi_system_id ac_dmi_table[] = { 
	{},

};



static int acpi_ac_add(struct acpi_device *device)

static int acpi_ac_probe(struct platform_device *pdev)

{

	int result = 0;

	struct acpi_ac *ac = NULL;

	struct acpi_device *adev;





	if (!device)

	if (!pdev)

		return -EINVAL;



	result = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);

	if (result)

		return -ENODEV;



	ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);

	if (!ac)

		return -ENOMEM;



	ac->device = device;

	strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);

	strcpy(acpi_device_class(device), ACPI_AC_CLASS);

	device->driver_data = ac;

	strcpy(acpi_device_name(adev), ACPI_AC_DEVICE_NAME);

	strcpy(acpi_device_class(adev), ACPI_AC_CLASS);

	ac->adev = adev;

	ac->pdev = pdev;

	platform_set_drvdata(pdev, ac);



	result = acpi_ac_get_state(ac);

	if (result)

		goto end;



#ifdef CONFIG_ACPI_PROCFS_POWER

	result = acpi_ac_add_fs(device);

#endif

	result = acpi_ac_add_fs(ac);

	if (result)

		goto end;

	ac->charger.name = acpi_device_bid(device);

#endif

	ac->charger.name = acpi_device_bid(adev);

	ac->charger.type = POWER_SUPPLY_TYPE_MAINS;

	ac->charger.properties = ac_props;

	ac->charger.num_properties = ARRAY_SIZE(ac_props);

	ac->charger.get_property = get_ac_property;

	result = power_supply_register(&ac->device->dev, &ac->charger);

	result = power_supply_register(&pdev->dev, &ac->charger);

	if (result)

		goto end;



	result = acpi_install_notify_handler(ACPI_HANDLE(&pdev->dev),

			ACPI_DEVICE_NOTIFY, acpi_ac_notify_handler, ac);

	if (result) {

		power_supply_unregister(&ac->charger);

		goto end;

	}

	printk(KERN_INFO PREFIX "%s [%s] (%s)\n",

	       acpi_device_name(device), acpi_device_bid(device),

	       acpi_device_name(adev), acpi_device_bid(adev),

	       ac->state ? "on-line" : "off-line");



      end:

	if (result) {

#ifdef CONFIG_ACPI_PROCFS_POWER

		acpi_ac_remove_fs(device);

		acpi_ac_remove_fs(ac);

#endif

		kfree(ac);

	}
@@ -356,7 +338,7 @@ static int acpi_ac_resume(struct device *dev) 
	if (!dev)

		return -EINVAL;



	ac = acpi_driver_data(to_acpi_device(dev));

	ac = platform_get_drvdata(to_platform_device(dev));

	if (!ac)

		return -EINVAL;
@@ -368,21 +350,24 @@ static int acpi_ac_resume(struct device *dev) 
	return 0;

}

#endif

static SIMPLE_DEV_PM_OPS(acpi_ac_pm_ops, NULL, acpi_ac_resume);



static int acpi_ac_remove(struct acpi_device *device)

static int acpi_ac_remove(struct platform_device *pdev)

{

	struct acpi_ac *ac = NULL;



	struct acpi_ac *ac;



	if (!device || !acpi_driver_data(device))

	if (!pdev)

		return -EINVAL;



	ac = acpi_driver_data(device);

	acpi_remove_notify_handler(ACPI_HANDLE(&pdev->dev),

			ACPI_DEVICE_NOTIFY, acpi_ac_notify_handler);



	ac = platform_get_drvdata(pdev);

	if (ac->charger.dev)

		power_supply_unregister(&ac->charger);



#ifdef CONFIG_ACPI_PROCFS_POWER

	acpi_ac_remove_fs(device);

	acpi_ac_remove_fs(ac);

#endif



	kfree(ac);
@@ -390,6 +375,23 @@ static int acpi_ac_remove(struct acpi_device *device) 
	return 0;

}



static const struct acpi_device_id acpi_ac_match[] = {

	{ "ACPI0003", 0 },

	{ }

};

MODULE_DEVICE_TABLE(acpi, acpi_ac_match);



static struct platform_driver acpi_ac_driver = {

	.probe          = acpi_ac_probe,

	.remove         = acpi_ac_remove,

	.driver         = {

		.name   = "acpi-ac",

		.owner  = THIS_MODULE,

		.pm     = &acpi_ac_pm_ops,

		.acpi_match_table = ACPI_PTR(acpi_ac_match),

	},

};



static int __init acpi_ac_init(void)

{

	int result;
@@ -403,7 +405,7 @@ static int __init acpi_ac_init(void) 
		return -ENODEV;

#endif



	result = acpi_bus_register_driver(&acpi_ac_driver);

	result = platform_driver_register(&acpi_ac_driver);

	if (result < 0) {

#ifdef CONFIG_ACPI_PROCFS_POWER

		acpi_unlock_ac_dir(acpi_ac_dir);
@@ -416,15 +418,10 @@ static int __init acpi_ac_init(void) 


static void __exit acpi_ac_exit(void)

{



	acpi_bus_unregister_driver(&acpi_ac_driver);



	platform_driver_unregister(&acpi_ac_driver);

#ifdef CONFIG_ACPI_PROCFS_POWER

	acpi_unlock_ac_dir(acpi_ac_dir);

#endif



	return;

}



module_init(acpi_ac_init);

module_exit(acpi_ac_exit);

drivers/acpi/acpi_platform.c

+1 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ ACPI_MODULE_NAME("platform"); 
static const struct acpi_device_id acpi_platform_device_ids[] = {



	{ "PNP0D40" },

	{ "ACPI0003" },



	{ }

};