diff options
| -rw-r--r-- | drivers/acpi/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/acpi/button.c | 223 |
2 files changed, 139 insertions, 85 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 0f9d4be..0ed8012 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -97,6 +97,7 @@ config ACPI_BATTERY config ACPI_BUTTON tristate "Button" + depends on INPUT default y help This driver handles events on the power, sleep and lid buttons. diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 5ef885e..ac86058 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -29,6 +29,7 @@ #include <linux/types.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/input.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> @@ -62,7 +63,7 @@ #define _COMPONENT ACPI_BUTTON_COMPONENT ACPI_MODULE_NAME("acpi_button") - MODULE_AUTHOR("Paul Diefenbaugh"); +MODULE_AUTHOR("Paul Diefenbaugh"); MODULE_DESCRIPTION(ACPI_BUTTON_DRIVER_NAME); MODULE_LICENSE("GPL"); @@ -78,12 +79,14 @@ static struct acpi_driver acpi_button_driver = { .ops = { .add = acpi_button_add, .remove = acpi_button_remove, - }, + }, }; struct acpi_button { struct acpi_device *device; /* Fixed button kludge */ - u8 type; + unsigned int type; + struct input_dev *input; + char phys[32]; /* for input device */ unsigned long pushed; }; @@ -109,8 +112,7 @@ static struct proc_dir_entry *acpi_button_dir; static int acpi_button_info_seq_show(struct seq_file *seq, void *offset) { - struct acpi_button *button = (struct acpi_button *)seq->private; - + struct acpi_button *button = seq->private; if (!button || !button->device) return 0; @@ -128,22 +130,17 @@ static int acpi_button_info_open_fs(struct inode *inode, struct file *file) static int acpi_button_state_seq_show(struct seq_file *seq, void *offset) { - struct acpi_button *button = (struct acpi_button *)seq->private; + struct acpi_button *button = seq->private; acpi_status status; unsigned long state; - if (!button || !button->device) return 0; status = acpi_evaluate_integer(button->device->handle, "_LID", NULL, &state); - if (ACPI_FAILURE(status)) { - seq_printf(seq, "state: unsupported\n"); - } else { - seq_printf(seq, "state: %s\n", - (state ? "open" : "closed")); - } - + seq_printf(seq, "state: %s\n", + ACPI_FAILURE(status) ? "unsupported" : + (state ? "open" : "closed")); return 0; } @@ -159,8 +156,7 @@ static struct proc_dir_entry *acpi_lid_dir; static int acpi_button_add_fs(struct acpi_device *device) { struct proc_dir_entry *entry = NULL; - struct acpi_button *button = NULL; - + struct acpi_button *button; if (!device || !acpi_driver_data(device)) return -EINVAL; @@ -228,10 +224,8 @@ static int acpi_button_add_fs(struct acpi_device *device) static int acpi_button_remove_fs(struct acpi_device *device) { - struct acpi_button *button = NULL; - + struct acpi_button *button = acpi_driver_data(device); - button = acpi_driver_data(device); if (acpi_device_dir(device)) { if (button->type == ACPI_BUTTON_TYPE_LID) remove_proc_entry(ACPI_BUTTON_FILE_STATE, @@ -253,14 +247,34 @@ static int acpi_button_remove_fs(struct acpi_device *device) static void acpi_button_notify(acpi_handle handle, u32 event, void *data) { - struct acpi_button *button = (struct acpi_button *)data; - + struct acpi_button *button = data; + struct input_dev *input; if (!button || !button->device) return; switch (event) { case ACPI_BUTTON_NOTIFY_STATUS: + input = button->input; + + if (button->type == ACPI_BUTTON_TYPE_LID) { + struct acpi_handle *handle = button->device->handle; + unsigned long state; + + if (!ACPI_FAILURE(acpi_evaluate_integer(handle, "_LID", + NULL, &state))) + input_report_switch(input, SW_LID, !state); + + } else { + int keycode = test_bit(KEY_SLEEP, input->keybit) ? + KEY_SLEEP : KEY_POWER; + + input_report_key(input, keycode, 1); + input_sync(input); + input_report_key(input, keycode, 0); + } + input_sync(input); + acpi_bus_generate_event(button->device, event, ++button->pushed); break; @@ -275,8 +289,7 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data) static acpi_status acpi_button_notify_fixed(void *data) { - struct acpi_button *button = (struct acpi_button *)data; - + struct acpi_button *button = data; if (!button) return AE_BAD_PARAMETER; @@ -286,24 +299,75 @@ static acpi_status acpi_button_notify_fixed(void *data) return AE_OK; } -static int acpi_button_add(struct acpi_device *device) +static int acpi_button_install_notify_handlers(struct acpi_button *button) { - int result = 0; - acpi_status status = AE_OK; - struct acpi_button *button = NULL; + acpi_status status; + switch (button->type) { + case ACPI_BUTTON_TYPE_POWERF: + status = + acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_button_notify_fixed, + button); + break; + case ACPI_BUTTON_TYPE_SLEEPF: + status = + acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, + acpi_button_notify_fixed, + button); + break; + default: + status = acpi_install_notify_handler(button->device->handle, + ACPI_DEVICE_NOTIFY, + acpi_button_notify, + button); + break; + } + + return ACPI_FAILURE(status) ? -ENODEV : 0; +} + +static void acpi_button_remove_notify_handlers(struct acpi_button *button) +{ + switch (button->type) { + case ACPI_BUTTON_TYPE_POWERF: + acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_button_notify_fixed); + break; + case ACPI_BUTTON_TYPE_SLEEPF: + acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, + acpi_button_notify_fixed); + break; + default: + acpi_remove_notify_handler(button->device->handle, + ACPI_DEVICE_NOTIFY, + acpi_button_notify); + break; + } +} + +static int acpi_button_add(struct acpi_device *device) +{ + int error; + struct acpi_button *button; + struct input_dev *input; if (!device) return -EINVAL; - button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL); + button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); if (!button) return -ENOMEM; - memset(button, 0, sizeof(struct acpi_button)); button->device = device; acpi_driver_data(device) = button; + button->input = input = input_allocate_device(); + if (!input) { + error = -ENOMEM; + goto err_free_button; + } + /* * Determine the button type (via hid), as fixed-feature buttons * need to be handled a bit differently than generic-space. @@ -338,39 +402,48 @@ static int acpi_button_add(struct acpi_device *device) } else { printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", acpi_device_hid(device)); - result = -ENODEV; - goto end; + error = -ENODEV; + goto err_free_input; } - result = acpi_button_add_fs(device); - if (result) - goto end; + error = acpi_button_add_fs(device); + if (error) + goto err_free_input; + + error = acpi_button_install_notify_handlers(button); + if (error) + goto err_remove_fs; + + snprintf(button->phys, sizeof(button->phys), + "%s/button/input0", acpi_device_hid(device)); + + input->name = acpi_device_name(device); + input->phys = button->phys; + input->id.bustype = BUS_HOST; + input->id.product = button->type; switch (button->type) { + case ACPI_BUTTON_TYPE_POWER: case ACPI_BUTTON_TYPE_POWERF: - status = - acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, - acpi_button_notify_fixed, - button); + input->evbit[0] = BIT(EV_KEY); + set_bit(KEY_POWER, input->keybit); break; + + case ACPI_BUTTON_TYPE_SLEEP: case ACPI_BUTTON_TYPE_SLEEPF: - status = - acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, - acpi_button_notify_fixed, - button); + input->evbit[0] = BIT(EV_KEY); + set_bit(KEY_SLEEP, input->keybit); break; - default: - status = acpi_install_notify_handler(device->handle, - ACPI_DEVICE_NOTIFY, - acpi_button_notify, - button); + + case ACPI_BUTTON_TYPE_LID: + input->evbit[0] = BIT(EV_SW); + set_bit(SW_LID, input->swbit); break; } - if (ACPI_FAILURE(status)) { - result = -ENODEV; - goto end; - } + error = input_register_device(input); + if (error) + goto err_remove_handlers; if (device->wakeup.flags.valid) { /* Button's GPE is run-wake GPE */ @@ -385,47 +458,31 @@ static int acpi_button_add(struct acpi_device *device) printk(KERN_INFO PREFIX "%s [%s]\n", acpi_device_name(device), acpi_device_bid(device)); - end: - if (result) { - acpi_button_remove_fs(device); - kfree(button); - } + return 0; - return result; + err_remove_handlers: + acpi_button_remove_notify_handlers(button); + err_remove_fs: + acpi_button_remove_fs(device); + err_free_input: + input_free_device(input); + err_free_button: + kfree(button); + return error; } static int acpi_button_remove(struct acpi_device *device, int type) { - acpi_status status = 0; - struct acpi_button *button = NULL; - + struct acpi_button *button; if (!device || !acpi_driver_data(device)) return -EINVAL; button = acpi_driver_data(device); - /* Unregister for device notifications. */ - switch (button->type) { - case ACPI_BUTTON_TYPE_POWERF: - status = - acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, - acpi_button_notify_fixed); - break; - case ACPI_BUTTON_TYPE_SLEEPF: - status = - acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, - acpi_button_notify_fixed); - break; - default: - status = acpi_remove_notify_handler(device->handle, - ACPI_DEVICE_NOTIFY, - acpi_button_notify); - break; - } - + acpi_button_remove_notify_handlers(button); acpi_button_remove_fs(device); - + input_unregister_device(button->input); kfree(button); return 0; @@ -433,8 +490,7 @@ static int acpi_button_remove(struct acpi_device *device, int type) static int __init acpi_button_init(void) { - int result = 0; - + int result; acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); if (!acpi_button_dir) @@ -451,7 +507,6 @@ static int __init acpi_button_init(void) static void __exit acpi_button_exit(void) { - acpi_bus_unregister_driver(&acpi_button_driver); if (acpi_power_dir) @@ -461,8 +516,6 @@ static void __exit acpi_button_exit(void) if (acpi_lid_dir) remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); - - return; } module_init(acpi_button_init); |