09c434b8a0047 (Thomas Gleixner 2019-05-19 13:08:20 +0100 1) // SPDX-License-Identifier: GPL-2.0-only
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 2) /*
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 3) * drivers/macintosh/mac_hid.c
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 4) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 5) * HID support stuff for Macintosh computers.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 6) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 7) * Copyright (C) 2000 Franz Sirl.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8) *
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 9) * This file will soon be removed in favor of an uinput userspace tool.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 10) */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 11)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 12) #include <linux/init.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 13) #include <linux/proc_fs.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 14) #include <linux/sysctl.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 15) #include <linux/input.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 16) #include <linux/module.h>
5a0e3ad6af866 (Tejun Heo 2010-03-24 17:04:11 +0900 17) #include <linux/slab.h>
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 18)
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 19) MODULE_LICENSE("GPL");
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 20)
872758563d7f1 (Olaf Hering 2007-02-10 21:35:12 +0100 21) static int mouse_emulate_buttons;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 22) static int mouse_button2_keycode = KEY_RIGHTCTRL; /* right control key */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 23) static int mouse_button3_keycode = KEY_RIGHTALT; /* right option key */
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 24)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 25) static struct input_dev *mac_hid_emumouse_dev;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 26)
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 27) static DEFINE_MUTEX(mac_hid_emumouse_mutex);
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 28)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 29) static int mac_hid_create_emumouse(void)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 30) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 31) static struct lock_class_key mac_hid_emumouse_dev_event_class;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 32) static struct lock_class_key mac_hid_emumouse_dev_mutex_class;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 33) int err;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 34)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 35) mac_hid_emumouse_dev = input_allocate_device();
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 36) if (!mac_hid_emumouse_dev)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 37) return -ENOMEM;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 38)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 39) lockdep_set_class(&mac_hid_emumouse_dev->event_lock,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 40) &mac_hid_emumouse_dev_event_class);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 41) lockdep_set_class(&mac_hid_emumouse_dev->mutex,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 42) &mac_hid_emumouse_dev_mutex_class);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 43)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 44) mac_hid_emumouse_dev->name = "Macintosh mouse button emulation";
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 45) mac_hid_emumouse_dev->id.bustype = BUS_ADB;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 46) mac_hid_emumouse_dev->id.vendor = 0x0001;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 47) mac_hid_emumouse_dev->id.product = 0x0001;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 48) mac_hid_emumouse_dev->id.version = 0x0100;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 49)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 50) mac_hid_emumouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 51) mac_hid_emumouse_dev->keybit[BIT_WORD(BTN_MOUSE)] =
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 52) BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 53) mac_hid_emumouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 54)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 55) err = input_register_device(mac_hid_emumouse_dev);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 56) if (err) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 57) input_free_device(mac_hid_emumouse_dev);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 58) mac_hid_emumouse_dev = NULL;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 59) return err;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 60) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 61)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 62) return 0;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 63) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 64)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 65) static void mac_hid_destroy_emumouse(void)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 66) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 67) input_unregister_device(mac_hid_emumouse_dev);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 68) mac_hid_emumouse_dev = NULL;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 69) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 70)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 71) static bool mac_hid_emumouse_filter(struct input_handle *handle,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 72) unsigned int type, unsigned int code,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 73) int value)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 74) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 75) unsigned int btn;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 76)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 77) if (type != EV_KEY)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 78) return false;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 79)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 80) if (code == mouse_button2_keycode)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 81) btn = BTN_MIDDLE;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 82) else if (code == mouse_button3_keycode)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 83) btn = BTN_RIGHT;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 84) else
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 85) return false;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 86)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 87) input_report_key(mac_hid_emumouse_dev, btn, value);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 88) input_sync(mac_hid_emumouse_dev);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 89)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 90) return true;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 91) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 92)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 93) static int mac_hid_emumouse_connect(struct input_handler *handler,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 94) struct input_dev *dev,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 95) const struct input_device_id *id)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 96) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 97) struct input_handle *handle;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 98) int error;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 99)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 100) /* Don't bind to ourselves */
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 101) if (dev == mac_hid_emumouse_dev)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 102) return -ENODEV;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 103)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 104) handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 105) if (!handle)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 106) return -ENOMEM;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 107)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 108) handle->dev = dev;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 109) handle->handler = handler;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 110) handle->name = "mac-button-emul";
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 111)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 112) error = input_register_handle(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 113) if (error) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 114) printk(KERN_ERR
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 115) "mac_hid: Failed to register button emulation handle, "
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 116) "error %d\n", error);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 117) goto err_free;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 118) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 119)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 120) error = input_open_device(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 121) if (error) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 122) printk(KERN_ERR
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 123) "mac_hid: Failed to open input device, error %d\n",
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 124) error);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 125) goto err_unregister;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 126) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 127)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 128) return 0;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 129)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 130) err_unregister:
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 131) input_unregister_handle(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 132) err_free:
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 133) kfree(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 134) return error;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 135) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 136)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 137) static void mac_hid_emumouse_disconnect(struct input_handle *handle)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 138) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 139) input_close_device(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 140) input_unregister_handle(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 141) kfree(handle);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 142) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 143)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 144) static const struct input_device_id mac_hid_emumouse_ids[] = {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 145) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 146) .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 147) .evbit = { BIT_MASK(EV_KEY) },
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 148) },
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 149) { },
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 150) };
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 151)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 152) MODULE_DEVICE_TABLE(input, mac_hid_emumouse_ids);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 153)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 154) static struct input_handler mac_hid_emumouse_handler = {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 155) .filter = mac_hid_emumouse_filter,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 156) .connect = mac_hid_emumouse_connect,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 157) .disconnect = mac_hid_emumouse_disconnect,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 158) .name = "mac-button-emul",
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 159) .id_table = mac_hid_emumouse_ids,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 160) };
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 161)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 162) static int mac_hid_start_emulation(void)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 163) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 164) int err;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 165)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 166) err = mac_hid_create_emumouse();
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 167) if (err)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 168) return err;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 169)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 170) err = input_register_handler(&mac_hid_emumouse_handler);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 171) if (err) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 172) mac_hid_destroy_emumouse();
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 173) return err;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 174) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 175)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 176) return 0;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 177) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 178)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 179) static void mac_hid_stop_emulation(void)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 180) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 181) input_unregister_handler(&mac_hid_emumouse_handler);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 182) mac_hid_destroy_emumouse();
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 183) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 184)
5eb969d0e8b8f (Joe Perches 2013-06-13 19:37:37 -0700 185) static int mac_hid_toggle_emumouse(struct ctl_table *table, int write,
32927393dc1cc (Christoph Hellwig 2020-04-24 08:43:38 +0200 186) void *buffer, size_t *lenp, loff_t *ppos)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 187) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 188) int *valp = table->data;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 189) int old_val = *valp;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 190) int rc;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 191)
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 192) rc = mutex_lock_killable(&mac_hid_emumouse_mutex);
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 193) if (rc)
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 194) return rc;
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 195)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 196) rc = proc_dointvec(table, write, buffer, lenp, ppos);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 197)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 198) if (rc == 0 && write && *valp != old_val) {
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 199) if (*valp == 1)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 200) rc = mac_hid_start_emulation();
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 201) else if (*valp == 0)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 202) mac_hid_stop_emulation();
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 203) else
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 204) rc = -EINVAL;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 205) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 206)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 207) /* Restore the old value in case of error */
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 208) if (rc)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 209) *valp = old_val;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 210)
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 211) mutex_unlock(&mac_hid_emumouse_mutex);
87abb6bbdbcfb (Dmitry Torokhov 2010-11-11 22:03:59 -0800 212)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 213) return rc;
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 214) }
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 215)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 216) /* file(s) in /proc/sys/dev/mac_hid */
5eb969d0e8b8f (Joe Perches 2013-06-13 19:37:37 -0700 217) static struct ctl_table mac_hid_files[] = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 218) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 219) .procname = "mouse_button_emulation",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 220) .data = &mouse_emulate_buttons,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 221) .maxlen = sizeof(int),
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 222) .mode = 0644,
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 223) .proc_handler = mac_hid_toggle_emumouse,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 224) },
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 225) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 226) .procname = "mouse_button2_keycode",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 227) .data = &mouse_button2_keycode,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 228) .maxlen = sizeof(int),
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 229) .mode = 0644,
6d4561110a3e9 (Eric W. Biederman 2009-11-16 03:11:48 -0800 230) .proc_handler = proc_dointvec,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 231) },
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 232) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 233) .procname = "mouse_button3_keycode",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 234) .data = &mouse_button3_keycode,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 235) .maxlen = sizeof(int),
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 236) .mode = 0644,
6d4561110a3e9 (Eric W. Biederman 2009-11-16 03:11:48 -0800 237) .proc_handler = proc_dointvec,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 238) },
894d2491153a9 (Eric W. Biederman 2009-11-05 14:34:02 -0800 239) { }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 240) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 241)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 242) /* dir in /proc/sys/dev */
5eb969d0e8b8f (Joe Perches 2013-06-13 19:37:37 -0700 243) static struct ctl_table mac_hid_dir[] = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 244) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 245) .procname = "mac_hid",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 246) .maxlen = 0,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 247) .mode = 0555,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 248) .child = mac_hid_files,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 249) },
894d2491153a9 (Eric W. Biederman 2009-11-05 14:34:02 -0800 250) { }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 251) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 252)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 253) /* /proc/sys/dev itself, in case that is not there yet */
5eb969d0e8b8f (Joe Perches 2013-06-13 19:37:37 -0700 254) static struct ctl_table mac_hid_root_dir[] = {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 255) {
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 256) .procname = "dev",
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 257) .maxlen = 0,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 258) .mode = 0555,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 259) .child = mac_hid_dir,
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 260) },
894d2491153a9 (Eric W. Biederman 2009-11-05 14:34:02 -0800 261) { }
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 262) };
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 263)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 264) static struct ctl_table_header *mac_hid_sysctl_header;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 265)
f3e5d2bf52514 (Adrian Bunk 2007-03-08 09:41:07 +1100 266) static int __init mac_hid_init(void)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 267) {
0b4d414714f0d (Eric W. Biederman 2007-02-14 00:34:09 -0800 268) mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir);
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 269) if (!mac_hid_sysctl_header)
99b089c3c38a8 (Dmitry Torokhov 2010-01-30 00:53:29 -0800 270) return -ENOMEM;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 271)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 272) return 0;
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 273) }
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 274) module_init(mac_hid_init);
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 275)
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 276) static void __exit mac_hid_exit(void)
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 277) {
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 278) unregister_sysctl_table(mac_hid_sysctl_header);
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 279)
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 280) if (mouse_emulate_buttons)
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 281) mac_hid_stop_emulation();
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 282) }
429722e19dff3 (Dmitry Torokhov 2010-01-30 01:44:20 -0800 283) module_exit(mac_hid_exit);
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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