ACPI / AC: convert ACPI ac driver to platform bus
Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>hifive-unleashed-5.1
Zhang Rui
Rafael J. Wysocki
parent
4a10c2ac2f
commit
cc8ef52707
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@ -34,6 +34,7 @@
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#endif
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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@ -61,39 +62,12 @@ extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
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static int acpi_ac_open_fs(struct inode *inode, struct file *file);
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#endif
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static int acpi_ac_add(struct acpi_device *device);
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static int acpi_ac_remove(struct acpi_device *device);
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static void acpi_ac_notify(struct acpi_device *device, u32 event);
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static const struct acpi_device_id ac_device_ids[] = {
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{"ACPI0003", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, ac_device_ids);
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#ifdef CONFIG_PM_SLEEP
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static int acpi_ac_resume(struct device *dev);
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#endif
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static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
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static int ac_sleep_before_get_state_ms;
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static struct acpi_driver acpi_ac_driver = {
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.name = "ac",
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.class = ACPI_AC_CLASS,
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.ids = ac_device_ids,
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.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
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.ops = {
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.add = acpi_ac_add,
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.remove = acpi_ac_remove,
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.notify = acpi_ac_notify,
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},
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.drv.pm = &acpi_ac_pm,
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};
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struct acpi_ac {
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struct power_supply charger;
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struct acpi_device * device;
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struct acpi_device *adev;
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struct platform_device *pdev;
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unsigned long long state;
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};
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@ -115,15 +89,13 @@ static const struct file_operations acpi_ac_fops = {
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static int acpi_ac_get_state(struct acpi_ac *ac)
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{
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acpi_status status = AE_OK;
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acpi_status status;
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if (!ac)
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return -EINVAL;
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status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL, &ac->state);
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status = acpi_evaluate_integer(ac->adev->handle, "_PSR", NULL,
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&ac->state);
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state"));
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ACPI_EXCEPTION((AE_INFO, status,
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"Error reading AC Adapter state"));
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ac->state = ACPI_AC_STATUS_UNKNOWN;
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return -ENODEV;
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}
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@ -201,36 +173,36 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file)
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return single_open(file, acpi_ac_seq_show, PDE_DATA(inode));
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}
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static int acpi_ac_add_fs(struct acpi_device *device)
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static int acpi_ac_add_fs(struct acpi_ac *ac)
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{
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struct proc_dir_entry *entry = NULL;
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printk(KERN_WARNING PREFIX "Deprecated procfs I/F for AC is loaded,"
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" please retry with CONFIG_ACPI_PROCFS_POWER cleared\n");
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if (!acpi_device_dir(device)) {
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acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
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acpi_ac_dir);
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if (!acpi_device_dir(device))
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if (!acpi_device_dir(ac->adev)) {
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acpi_device_dir(ac->adev) =
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proc_mkdir(acpi_device_bid(ac->adev), acpi_ac_dir);
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if (!acpi_device_dir(ac->adev))
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return -ENODEV;
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}
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/* 'state' [R] */
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entry = proc_create_data(ACPI_AC_FILE_STATE,
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S_IRUGO, acpi_device_dir(device),
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&acpi_ac_fops, acpi_driver_data(device));
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S_IRUGO, acpi_device_dir(ac->adev),
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&acpi_ac_fops, ac);
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if (!entry)
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return -ENODEV;
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return 0;
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}
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static int acpi_ac_remove_fs(struct acpi_device *device)
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static int acpi_ac_remove_fs(struct acpi_ac *ac)
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{
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if (acpi_device_dir(device)) {
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remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device));
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remove_proc_entry(acpi_device_bid(device), acpi_ac_dir);
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acpi_device_dir(device) = NULL;
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if (acpi_device_dir(ac->adev)) {
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remove_proc_entry(ACPI_AC_FILE_STATE,
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acpi_device_dir(ac->adev));
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remove_proc_entry(acpi_device_bid(ac->adev), acpi_ac_dir);
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acpi_device_dir(ac->adev) = NULL;
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}
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return 0;
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@ -241,10 +213,9 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
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Driver Model
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-------------------------------------------------------------------------- */
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static void acpi_ac_notify(struct acpi_device *device, u32 event)
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static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data)
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{
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struct acpi_ac *ac = acpi_driver_data(device);
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struct acpi_ac *ac = data;
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if (!ac)
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return;
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@ -267,10 +238,10 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event)
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msleep(ac_sleep_before_get_state_ms);
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acpi_ac_get_state(ac);
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acpi_bus_generate_netlink_event(device->pnp.device_class,
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dev_name(&device->dev), event,
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(u32) ac->state);
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acpi_notifier_call_chain(device, event, (u32) ac->state);
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acpi_bus_generate_netlink_event(ac->adev->pnp.device_class,
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dev_name(&ac->pdev->dev),
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event, (u32) ac->state);
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acpi_notifier_call_chain(ac->adev, event, (u32) ac->state);
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kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
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}
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@ -295,50 +266,61 @@ static struct dmi_system_id ac_dmi_table[] = {
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{},
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};
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static int acpi_ac_add(struct acpi_device *device)
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static int acpi_ac_probe(struct platform_device *pdev)
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{
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int result = 0;
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struct acpi_ac *ac = NULL;
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struct acpi_device *adev;
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if (!device)
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if (!pdev)
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return -EINVAL;
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result = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
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if (result)
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return -ENODEV;
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ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
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if (!ac)
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return -ENOMEM;
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ac->device = device;
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strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
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strcpy(acpi_device_class(device), ACPI_AC_CLASS);
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device->driver_data = ac;
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strcpy(acpi_device_name(adev), ACPI_AC_DEVICE_NAME);
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strcpy(acpi_device_class(adev), ACPI_AC_CLASS);
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ac->adev = adev;
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ac->pdev = pdev;
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platform_set_drvdata(pdev, ac);
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result = acpi_ac_get_state(ac);
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if (result)
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goto end;
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#ifdef CONFIG_ACPI_PROCFS_POWER
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result = acpi_ac_add_fs(device);
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#endif
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result = acpi_ac_add_fs(ac);
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if (result)
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goto end;
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ac->charger.name = acpi_device_bid(device);
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#endif
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ac->charger.name = acpi_device_bid(adev);
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ac->charger.type = POWER_SUPPLY_TYPE_MAINS;
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ac->charger.properties = ac_props;
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ac->charger.num_properties = ARRAY_SIZE(ac_props);
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ac->charger.get_property = get_ac_property;
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result = power_supply_register(&ac->device->dev, &ac->charger);
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result = power_supply_register(&pdev->dev, &ac->charger);
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if (result)
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goto end;
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result = acpi_install_notify_handler(ACPI_HANDLE(&pdev->dev),
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ACPI_DEVICE_NOTIFY, acpi_ac_notify_handler, ac);
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if (result) {
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power_supply_unregister(&ac->charger);
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goto end;
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}
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printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
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acpi_device_name(device), acpi_device_bid(device),
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acpi_device_name(adev), acpi_device_bid(adev),
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ac->state ? "on-line" : "off-line");
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end:
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if (result) {
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#ifdef CONFIG_ACPI_PROCFS_POWER
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acpi_ac_remove_fs(device);
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acpi_ac_remove_fs(ac);
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#endif
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kfree(ac);
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}
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@ -356,7 +338,7 @@ static int acpi_ac_resume(struct device *dev)
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if (!dev)
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return -EINVAL;
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ac = acpi_driver_data(to_acpi_device(dev));
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ac = platform_get_drvdata(to_platform_device(dev));
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if (!ac)
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return -EINVAL;
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@ -368,21 +350,24 @@ static int acpi_ac_resume(struct device *dev)
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return 0;
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}
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#endif
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static SIMPLE_DEV_PM_OPS(acpi_ac_pm_ops, NULL, acpi_ac_resume);
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static int acpi_ac_remove(struct acpi_device *device)
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static int acpi_ac_remove(struct platform_device *pdev)
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{
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struct acpi_ac *ac = NULL;
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struct acpi_ac *ac;
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if (!device || !acpi_driver_data(device))
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if (!pdev)
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return -EINVAL;
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ac = acpi_driver_data(device);
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acpi_remove_notify_handler(ACPI_HANDLE(&pdev->dev),
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ACPI_DEVICE_NOTIFY, acpi_ac_notify_handler);
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ac = platform_get_drvdata(pdev);
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if (ac->charger.dev)
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power_supply_unregister(&ac->charger);
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#ifdef CONFIG_ACPI_PROCFS_POWER
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acpi_ac_remove_fs(device);
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acpi_ac_remove_fs(ac);
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#endif
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kfree(ac);
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@ -390,6 +375,23 @@ static int acpi_ac_remove(struct acpi_device *device)
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return 0;
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}
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static const struct acpi_device_id acpi_ac_match[] = {
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{ "ACPI0003", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(acpi, acpi_ac_match);
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static struct platform_driver acpi_ac_driver = {
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.probe = acpi_ac_probe,
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.remove = acpi_ac_remove,
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.driver = {
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.name = "acpi-ac",
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.owner = THIS_MODULE,
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.pm = &acpi_ac_pm_ops,
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.acpi_match_table = ACPI_PTR(acpi_ac_match),
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},
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};
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static int __init acpi_ac_init(void)
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{
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int result;
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@ -403,7 +405,7 @@ static int __init acpi_ac_init(void)
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return -ENODEV;
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#endif
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result = acpi_bus_register_driver(&acpi_ac_driver);
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result = platform_driver_register(&acpi_ac_driver);
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if (result < 0) {
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#ifdef CONFIG_ACPI_PROCFS_POWER
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acpi_unlock_ac_dir(acpi_ac_dir);
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@ -416,15 +418,10 @@ static int __init acpi_ac_init(void)
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static void __exit acpi_ac_exit(void)
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{
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acpi_bus_unregister_driver(&acpi_ac_driver);
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platform_driver_unregister(&acpi_ac_driver);
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#ifdef CONFIG_ACPI_PROCFS_POWER
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acpi_unlock_ac_dir(acpi_ac_dir);
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#endif
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return;
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}
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module_init(acpi_ac_init);
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module_exit(acpi_ac_exit);
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@ -29,6 +29,7 @@ ACPI_MODULE_NAME("platform");
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static const struct acpi_device_id acpi_platform_device_ids[] = {
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{ "PNP0D40" },
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{ "ACPI0003" },
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{ }
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};
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