Add CC. Thomas 於 日，2010-10-31 於 00:36 +0800，Lee, Chun-Yi 提到： > Add acer wmi hotkey event support. Install a wmi notify handler to > transfer wmi event key to key code, then send out keycode through acer > wmi input device to userland. > > Signed-off-by: Lee, Chun-Yi <[email protected]> > --- > drivers/platform/x86/Kconfig | 2 + > drivers/platform/x86/acer-wmi.c | 139 > +++++++++++++++++++++++++++++++++++++++ > 2 files changed, 141 insertions(+), 0 deletions(-) > > diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig > index cff7cc2..c242fdd 100644 > --- a/drivers/platform/x86/Kconfig > +++ b/drivers/platform/x86/Kconfig > @@ -23,7 +23,9 @@ config ACER_WMI > depends on BACKLIGHT_CLASS_DEVICE > depends on SERIO_I8042 > depends on RFKILL || RFKILL = n > + depends on INPUT > select ACPI_WMI > + select INPUT_SPARSEKMAP > ---help--- > This is a driver for newer Acer (and Wistron) laptops. It adds > wireless radio and bluetooth control, and on some laptops, > diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c > index 2badee2..930df56 100644 > --- a/drivers/platform/x86/acer-wmi.c > +++ b/drivers/platform/x86/acer-wmi.c > @@ -37,6 +37,8 @@ > #include <linux/workqueue.h> > #include <linux/debugfs.h> > #include <linux/slab.h> > +#include <linux/input.h> > +#include <linux/input/sparse-keymap.h> > > #include <acpi/acpi_drivers.h> > > @@ -48,6 +50,7 @@ MODULE_LICENSE("GPL"); > #define ACER_ERR KERN_ERR ACER_LOGPREFIX > #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX > #define ACER_INFO KERN_INFO ACER_LOGPREFIX > +#define ACER_WARNING KERN_WARNING ACER_LOGPREFIX > > /* > * Magic Number > @@ -83,8 +86,39 @@ MODULE_LICENSE("GPL"); > #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3" > #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" > > +/* > + * Acer ACPI event GUIDs > + */ > +#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" > + > MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); > MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); > +MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); > + > +enum acer_wmi_event_ids { > + WMID_HOTKEY_EVENT = 0x1, > +}; > + > +static const struct key_entry acer_wmi_keymap[] = { > + {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ > + {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ > + {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ > + {KE_KEY, 0x22, {KEY_PROG2} }, /* Aracade */ > + {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ > + {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */ > + {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */ > + {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */ > + {KE_END, 0} > +}; > + > +static struct input_dev *acer_wmi_input_dev; > + > +struct event_return_value { > + u8 function; > + u8 key_num; > + u16 device_state; > + u32 reserved; > +} __attribute__((packed)); > > /* > * Interface capability flags > @@ -1085,6 +1119,99 @@ static ssize_t show_interface(struct device *dev, > struct device_attribute *attr, > > static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL); > > +static void acer_wmi_notify(u32 value, void *context) > +{ > + struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; > + union acpi_object *obj; > + struct event_return_value return_value; > + acpi_status status; > + > + status = wmi_get_event_data(value, &response); > + if (status != AE_OK) { > + printk(ACER_WARNING "bad event status 0x%x\n", status); > + return; > + } > + > + obj = (union acpi_object *)response.pointer; > + > + if (!obj) > + return; > + if (obj->type != ACPI_TYPE_BUFFER) { > + printk(ACER_WARNING "Unknown response received %d\n", > + obj->type); > + kfree(obj); > + return; > + } > + if (obj->buffer.length != 8) { > + printk(ACER_WARNING "Unknown buffer length %d\n", > + obj->buffer.length); > + kfree(obj); > + return; > + } > + > + return_value = *((struct event_return_value *)obj->buffer.pointer); > + kfree(obj); > + > + switch (return_value.function) { > + case WMID_HOTKEY_EVENT: > + if (!sparse_keymap_report_event(acer_wmi_input_dev, > + return_value.key_num, 1, true)) > + printk(ACER_WARNING "Unknown key number - 0x%x\n", > + return_value.key_num); > + break; > + default: > + printk(ACER_WARNING "Unknown function number - %d - %d\n", > + return_value.function, return_value.key_num); > + break; > + } > +} > + > +static int __init acer_wmi_input_setup(void) > +{ > + acpi_status status; > + int err; > + > + acer_wmi_input_dev = input_allocate_device(); > + if (!acer_wmi_input_dev) > + return -ENOMEM; > + > + acer_wmi_input_dev->name = "Acer WMI hotkeys"; > + acer_wmi_input_dev->phys = "wmi/input0"; > + acer_wmi_input_dev->id.bustype = BUS_HOST; > + > + err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL); > + if (err) > + goto err_free_dev; > + > + status = wmi_install_notify_handler(ACERWMID_EVENT_GUID, > + acer_wmi_notify, NULL); > + if (ACPI_FAILURE(status)) { > + err = -EIO; > + goto err_free_keymap; > + } > + > + err = input_register_device(acer_wmi_input_dev); > + if (err) > + goto err_uninstall_notifier; > + > + return 0; > + > +err_uninstall_notifier: > + wmi_remove_notify_handler(ACERWMID_EVENT_GUID); > +err_free_keymap: > + sparse_keymap_free(acer_wmi_input_dev); > +err_free_dev: > + input_free_device(acer_wmi_input_dev); > + return err; > +} > + > +static void acer_wmi_input_destroy(void) > +{ > + wmi_remove_notify_handler(ACERWMID_EVENT_GUID); > + sparse_keymap_free(acer_wmi_input_dev); > + input_unregister_device(acer_wmi_input_dev); > +} > + > /* > * debugfs functions > */ > @@ -1327,6 +1454,12 @@ static int __init acer_wmi_init(void) > "generic video driver\n"); > } > > + if (wmi_has_guid(ACERWMID_EVENT_GUID)) { > + err = acer_wmi_input_setup(); > + if (err) > + return err; > + } > + > err = platform_driver_register(&acer_platform_driver); > if (err) { > printk(ACER_ERR "Unable to register platform driver.\n"); > @@ -1368,11 +1501,17 @@ error_device_add: > error_device_alloc: > platform_driver_unregister(&acer_platform_driver); > error_platform_register: > + if (wmi_has_guid(ACERWMID_EVENT_GUID)) > + acer_wmi_input_destroy(); > + > return err; > } > > static void __exit acer_wmi_exit(void) > { > + if (wmi_has_guid(ACERWMID_EVENT_GUID)) > + acer_wmi_input_destroy(); > + > remove_sysfs(acer_platform_device); > remove_debugfs(); > platform_device_unregister(acer_platform_device);
-- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
