X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fmacintosh%2Fmac_hid.c;h=e943d2a29253d53b60d35c08cfe89e83902508ac;hb=598b3578ab9ee8e3eef322128485719668d8b93b;hp=2dd29b42a49ebf927a6f794b5d0f6ebbb5b02503;hpb=894d2491153a9f8270dbed21175d06fde4eba6c7;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/macintosh/mac_hid.c b/drivers/macintosh/mac_hid.c index 2dd29b4..e943d2a 100644 --- a/drivers/macintosh/mac_hid.c +++ b/drivers/macintosh/mac_hid.c @@ -13,17 +13,197 @@ #include #include #include -#include +MODULE_LICENSE("GPL"); -static struct input_dev *emumousebtn; -static int emumousebtn_input_register(void); static int mouse_emulate_buttons; static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */ static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */ -static int mouse_last_keycode; -#if defined(CONFIG_SYSCTL) +static struct input_dev *mac_hid_emumouse_dev; + +static int mac_hid_create_emumouse(void) +{ + static struct lock_class_key mac_hid_emumouse_dev_event_class; + static struct lock_class_key mac_hid_emumouse_dev_mutex_class; + int err; + + mac_hid_emumouse_dev = input_allocate_device(); + if (!mac_hid_emumouse_dev) + return -ENOMEM; + + lockdep_set_class(&mac_hid_emumouse_dev->event_lock, + &mac_hid_emumouse_dev_event_class); + lockdep_set_class(&mac_hid_emumouse_dev->mutex, + &mac_hid_emumouse_dev_mutex_class); + + mac_hid_emumouse_dev->name = "Macintosh mouse button emulation"; + mac_hid_emumouse_dev->id.bustype = BUS_ADB; + mac_hid_emumouse_dev->id.vendor = 0x0001; + mac_hid_emumouse_dev->id.product = 0x0001; + mac_hid_emumouse_dev->id.version = 0x0100; + + mac_hid_emumouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); + mac_hid_emumouse_dev->keybit[BIT_WORD(BTN_MOUSE)] = + BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); + mac_hid_emumouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); + + err = input_register_device(mac_hid_emumouse_dev); + if (err) { + input_free_device(mac_hid_emumouse_dev); + mac_hid_emumouse_dev = NULL; + return err; + } + + return 0; +} + +static void mac_hid_destroy_emumouse(void) +{ + input_unregister_device(mac_hid_emumouse_dev); + mac_hid_emumouse_dev = NULL; +} + +static bool mac_hid_emumouse_filter(struct input_handle *handle, + unsigned int type, unsigned int code, + int value) +{ + unsigned int btn; + + if (type != EV_KEY) + return false; + + if (code == mouse_button2_keycode) + btn = BTN_MIDDLE; + else if (code == mouse_button3_keycode) + btn = BTN_RIGHT; + else + return false; + + input_report_key(mac_hid_emumouse_dev, btn, value); + input_sync(mac_hid_emumouse_dev); + + return true; +} + +static int mac_hid_emumouse_connect(struct input_handler *handler, + struct input_dev *dev, + const struct input_device_id *id) +{ + struct input_handle *handle; + int error; + + /* Don't bind to ourselves */ + if (dev == mac_hid_emumouse_dev) + return -ENODEV; + + handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); + if (!handle) + return -ENOMEM; + + handle->dev = dev; + handle->handler = handler; + handle->name = "mac-button-emul"; + + error = input_register_handle(handle); + if (error) { + printk(KERN_ERR + "mac_hid: Failed to register button emulation handle, " + "error %d\n", error); + goto err_free; + } + + error = input_open_device(handle); + if (error) { + printk(KERN_ERR + "mac_hid: Failed to open input device, error %d\n", + error); + goto err_unregister; + } + + return 0; + + err_unregister: + input_unregister_handle(handle); + err_free: + kfree(handle); + return error; +} + +static void mac_hid_emumouse_disconnect(struct input_handle *handle) +{ + input_close_device(handle); + input_unregister_handle(handle); + kfree(handle); +} + +static const struct input_device_id mac_hid_emumouse_ids[] = { + { + .flags = INPUT_DEVICE_ID_MATCH_EVBIT, + .evbit = { BIT_MASK(EV_KEY) }, + }, + { }, +}; + +MODULE_DEVICE_TABLE(input, mac_hid_emumouse_ids); + +static struct input_handler mac_hid_emumouse_handler = { + .filter = mac_hid_emumouse_filter, + .connect = mac_hid_emumouse_connect, + .disconnect = mac_hid_emumouse_disconnect, + .name = "mac-button-emul", + .id_table = mac_hid_emumouse_ids, +}; + +static int mac_hid_start_emulation(void) +{ + int err; + + err = mac_hid_create_emumouse(); + if (err) + return err; + + err = input_register_handler(&mac_hid_emumouse_handler); + if (err) { + mac_hid_destroy_emumouse(); + return err; + } + + return 0; +} + +static void mac_hid_stop_emulation(void) +{ + input_unregister_handler(&mac_hid_emumouse_handler); + mac_hid_destroy_emumouse(); +} + +static int mac_hid_toggle_emumouse(ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos) +{ + int *valp = table->data; + int old_val = *valp; + int rc; + + rc = proc_dointvec(table, write, buffer, lenp, ppos); + + if (rc == 0 && write && *valp != old_val) { + if (*valp == 1) + rc = mac_hid_start_emulation(); + else if (*valp == 0) + mac_hid_stop_emulation(); + else + rc = -EINVAL; + } + + /* Restore the old value in case of error */ + if (rc) + *valp = old_val; + + return rc; +} + /* file(s) in /proc/sys/dev/mac_hid */ static ctl_table mac_hid_files[] = { { @@ -31,21 +211,21 @@ static ctl_table mac_hid_files[] = { .data = &mouse_emulate_buttons, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = &proc_dointvec, + .proc_handler = mac_hid_toggle_emumouse, }, { .procname = "mouse_button2_keycode", .data = &mouse_button2_keycode, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = &proc_dointvec, + .proc_handler = proc_dointvec, }, { .procname = "mouse_button3_keycode", .data = &mouse_button3_keycode, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = &proc_dointvec, + .proc_handler = proc_dointvec, }, { } }; @@ -74,75 +254,21 @@ static ctl_table mac_hid_root_dir[] = { static struct ctl_table_header *mac_hid_sysctl_header; -#endif /* endif CONFIG_SYSCTL */ - -int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down) -{ - switch (caller) { - case 1: - /* Called from keyboard.c */ - if (mouse_emulate_buttons - && (keycode == mouse_button2_keycode - || keycode == mouse_button3_keycode)) { - if (mouse_emulate_buttons == 1) { - input_report_key(emumousebtn, - keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT, - down); - input_sync(emumousebtn); - return 1; - } - mouse_last_keycode = down ? keycode : 0; - } - break; - } - return 0; -} - -static struct lock_class_key emumousebtn_event_class; -static struct lock_class_key emumousebtn_mutex_class; - -static int emumousebtn_input_register(void) +static int __init mac_hid_init(void) { - int ret; - - emumousebtn = input_allocate_device(); - if (!emumousebtn) + mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir); + if (!mac_hid_sysctl_header) return -ENOMEM; - lockdep_set_class(&emumousebtn->event_lock, &emumousebtn_event_class); - lockdep_set_class(&emumousebtn->mutex, &emumousebtn_mutex_class); - - emumousebtn->name = "Macintosh mouse button emulation"; - emumousebtn->id.bustype = BUS_ADB; - emumousebtn->id.vendor = 0x0001; - emumousebtn->id.product = 0x0001; - emumousebtn->id.version = 0x0100; - - emumousebtn->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); - emumousebtn->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | - BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); - emumousebtn->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); - - ret = input_register_device(emumousebtn); - if (ret) - input_free_device(emumousebtn); - - return ret; + return 0; } +module_init(mac_hid_init); -static int __init mac_hid_init(void) +static void __exit mac_hid_exit(void) { - int err; - - err = emumousebtn_input_register(); - if (err) - return err; - -#if defined(CONFIG_SYSCTL) - mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir); -#endif /* CONFIG_SYSCTL */ + unregister_sysctl_table(mac_hid_sysctl_header); - return 0; + if (mouse_emulate_buttons) + mac_hid_stop_emulation(); } - -device_initcall(mac_hid_init); +module_exit(mac_hid_exit);