diff options
| -rw-r--r-- | drivers/platform/x86/eeepc-wmi.c | 102 |
1 files changed, 86 insertions, 16 deletions
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c index daed4a476b3..0c9596c97a0 100644 --- a/drivers/platform/x86/eeepc-wmi.c +++ b/drivers/platform/x86/eeepc-wmi.c @@ -32,9 +32,12 @@ #include <linux/slab.h> #include <linux/input.h> #include <linux/input/sparse-keymap.h> +#include <linux/platform_device.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> +#define EEEPC_WMI_FILE "eeepc-wmi" + MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>"); MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); MODULE_LICENSE("GPL"); @@ -64,7 +67,7 @@ struct eeepc_wmi { struct input_dev *inputdev; }; -static struct eeepc_wmi *eeepc; +static struct platform_device *platform_device; static void eeepc_wmi_notify(u32 value, void *context) { @@ -107,8 +110,9 @@ static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc) return -ENOMEM; eeepc->inputdev->name = "Eee PC WMI hotkeys"; - eeepc->inputdev->phys = "wmi/input0"; + eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0"; eeepc->inputdev->id.bustype = BUS_HOST; + eeepc->inputdev->dev.parent = &platform_device->dev; err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL); if (err) @@ -137,11 +141,60 @@ static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc) eeepc->inputdev = NULL; } -static int __init eeepc_wmi_init(void) +static int __devinit eeepc_wmi_platform_probe(struct platform_device *device) { + struct eeepc_wmi *eeepc; int err; acpi_status status; + eeepc = platform_get_drvdata(device); + + err = eeepc_wmi_input_init(eeepc); + if (err) + return err; + + status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, + eeepc_wmi_notify, eeepc); + if (ACPI_FAILURE(status)) { + pr_err("Unable to register notify handler - %d\n", + status); + err = -ENODEV; + goto error_wmi; + } + + return 0; + +error_wmi: + eeepc_wmi_input_exit(eeepc); + + return err; +} + +static int __devexit eeepc_wmi_platform_remove(struct platform_device *device) +{ + struct eeepc_wmi *eeepc; + + eeepc = platform_get_drvdata(device); + wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); + eeepc_wmi_input_exit(eeepc); + + return 0; +} + +static struct platform_driver platform_driver = { + .driver = { + .name = EEEPC_WMI_FILE, + .owner = THIS_MODULE, + }, + .probe = eeepc_wmi_platform_probe, + .remove = __devexit_p(eeepc_wmi_platform_remove), +}; + +static int __init eeepc_wmi_init(void) +{ + struct eeepc_wmi *eeepc; + int err; + if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID)) { pr_warning("No known WMI GUID found\n"); return -ENODEV; @@ -151,29 +204,46 @@ static int __init eeepc_wmi_init(void) if (!eeepc) return -ENOMEM; - err = eeepc_wmi_input_init(eeepc); + platform_device = platform_device_alloc(EEEPC_WMI_FILE, -1); + if (!platform_device) { + pr_warning("Unable to allocate platform device\n"); + err = -ENOMEM; + goto fail_platform; + } + + err = platform_device_add(platform_device); if (err) { - kfree(eeepc); - return err; + pr_warning("Unable to add platform device\n"); + goto put_dev; } - status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, - eeepc_wmi_notify, eeepc); - if (ACPI_FAILURE(status)) { - pr_err("Unable to register notify handler - %d\n", - status); - eeepc_wmi_input_exit(eeepc); - kfree(eeepc); - return -ENODEV; + platform_set_drvdata(platform_device, eeepc); + + err = platform_driver_register(&platform_driver); + if (err) { + pr_warning("Unable to register platform driver\n"); + goto del_dev; } return 0; + +del_dev: + platform_device_del(platform_device); +put_dev: + platform_device_put(platform_device); +fail_platform: + kfree(eeepc); + + return err; } static void __exit eeepc_wmi_exit(void) { - wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); - eeepc_wmi_input_exit(eeepc); + struct eeepc_wmi *eeepc; + + eeepc = platform_get_drvdata(platform_device); + platform_driver_unregister(&platform_driver); + platform_device_unregister(platform_device); kfree(eeepc); } |