6d4561110a
For consistency drop & in front of every proc_handler. Explicity taking the address is unnecessary and it prevents optimizations like stubbing the proc_handlers to NULL. Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joe Perches <joe@perches.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
148 lines
3.3 KiB
C
148 lines
3.3 KiB
C
/*
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* drivers/macintosh/mac_hid.c
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*
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* HID support stuff for Macintosh computers.
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*
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* Copyright (C) 2000 Franz Sirl.
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*
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* This file will soon be removed in favor of an uinput userspace tool.
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*/
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#include <linux/sysctl.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/kbd_kern.h>
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static struct input_dev *emumousebtn;
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static int emumousebtn_input_register(void);
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static int mouse_emulate_buttons;
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static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */
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static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */
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static int mouse_last_keycode;
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#if defined(CONFIG_SYSCTL)
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/* file(s) in /proc/sys/dev/mac_hid */
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static ctl_table mac_hid_files[] = {
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{
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.procname = "mouse_button_emulation",
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.data = &mouse_emulate_buttons,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec,
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},
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{
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.procname = "mouse_button2_keycode",
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.data = &mouse_button2_keycode,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec,
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},
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{
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.procname = "mouse_button3_keycode",
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.data = &mouse_button3_keycode,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec,
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},
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{ }
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};
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/* dir in /proc/sys/dev */
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static ctl_table mac_hid_dir[] = {
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{
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.procname = "mac_hid",
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.maxlen = 0,
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.mode = 0555,
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.child = mac_hid_files,
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},
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{ }
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};
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/* /proc/sys/dev itself, in case that is not there yet */
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static ctl_table mac_hid_root_dir[] = {
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{
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.procname = "dev",
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.maxlen = 0,
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.mode = 0555,
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.child = mac_hid_dir,
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},
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{ }
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};
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static struct ctl_table_header *mac_hid_sysctl_header;
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#endif /* endif CONFIG_SYSCTL */
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int mac_hid_mouse_emulate_buttons(int caller, unsigned int keycode, int down)
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{
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switch (caller) {
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case 1:
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/* Called from keyboard.c */
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if (mouse_emulate_buttons
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&& (keycode == mouse_button2_keycode
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|| keycode == mouse_button3_keycode)) {
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if (mouse_emulate_buttons == 1) {
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input_report_key(emumousebtn,
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keycode == mouse_button2_keycode ? BTN_MIDDLE : BTN_RIGHT,
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down);
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input_sync(emumousebtn);
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return 1;
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}
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mouse_last_keycode = down ? keycode : 0;
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}
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break;
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}
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return 0;
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}
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static struct lock_class_key emumousebtn_event_class;
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static struct lock_class_key emumousebtn_mutex_class;
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static int emumousebtn_input_register(void)
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{
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int ret;
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emumousebtn = input_allocate_device();
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if (!emumousebtn)
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return -ENOMEM;
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lockdep_set_class(&emumousebtn->event_lock, &emumousebtn_event_class);
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lockdep_set_class(&emumousebtn->mutex, &emumousebtn_mutex_class);
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emumousebtn->name = "Macintosh mouse button emulation";
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emumousebtn->id.bustype = BUS_ADB;
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emumousebtn->id.vendor = 0x0001;
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emumousebtn->id.product = 0x0001;
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emumousebtn->id.version = 0x0100;
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emumousebtn->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
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emumousebtn->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
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BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
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emumousebtn->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
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ret = input_register_device(emumousebtn);
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if (ret)
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input_free_device(emumousebtn);
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return ret;
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}
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static int __init mac_hid_init(void)
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{
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int err;
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err = emumousebtn_input_register();
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if (err)
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return err;
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#if defined(CONFIG_SYSCTL)
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mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir);
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#endif /* CONFIG_SYSCTL */
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return 0;
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}
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device_initcall(mac_hid_init);
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