new file mode 100644
@@ -0,0 +1,262 @@
+/*
+ * USB HID quirks support for the Always Innovating Touch Book
+ * Code borrowed from hid-apple.c
+ *
+ * Copyright (c) 2009 Gregoire Gentil <gregoire@gentil.com>
+ * Copyright (c) 2009 Tim Yamin <plasm@roo.me.uk>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include "hid-ids.h"
+
+struct touchbook_sc {
+ unsigned long quirks;
+ unsigned int fn_on;
+ DECLARE_BITMAP(pressed_fn, KEY_CNT);
+};
+
+struct touchbook_key_translation {
+ u16 from;
+ u16 to;
+ u8 flags;
+};
+
+static struct touchbook_key_translation touchbook_fn_keys[] = {
+ { KEY_F6, KEY_BRIGHTNESSDOWN },
+ { KEY_F7, KEY_BRIGHTNESSUP },
+
+ { KEY_F8, KEY_MUTE },
+ { KEY_F9, KEY_VOLUMEDOWN },
+ { KEY_F10, KEY_VOLUMEUP },
+
+ { KEY_UP, KEY_PAGEUP },
+ { KEY_DOWN, KEY_PAGEDOWN },
+ { }
+};
+
+extern unsigned long touchbook_revision;
+unsigned long swap_key;
+
+static struct touchbook_key_translation *touchbook_find_translation(
+ struct touchbook_key_translation *table, u16 from)
+{
+ struct touchbook_key_translation *trans;
+
+ /* Look for the translation */
+ for (trans = table; trans->from; trans++)
+ if (trans->from == from)
+ return trans;
+
+ return NULL;
+}
+
+static int touchbook_event(struct hid_device *hid, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
+{
+ int do_translate;
+
+ struct input_dev *input = field->hidinput->input;
+ struct touchbook_sc *asc = hid_get_drvdata(hid);
+ struct touchbook_key_translation *trans;
+
+ if (swap_key && usage->code == KEY_RIGHTSHIFT) {
+ input_event(input, usage->type, KEY_END, value);
+ return 1;
+ }
+
+ if (swap_key && usage->code == KEY_END) {
+ input_event(input, usage->type, KEY_RIGHTSHIFT, value);
+ return 1;
+ }
+
+ if (usage->code == KEY_POWER) {
+ asc->fn_on = !!value;
+ input_event(input, usage->type, usage->code, value);
+ return 1;
+ }
+
+ trans = touchbook_find_translation(touchbook_fn_keys, usage->code);
+ if (trans) {
+ if (test_bit(usage->code, asc->pressed_fn))
+ do_translate = 1;
+ else
+ do_translate = asc->fn_on;
+
+ if (do_translate) {
+ if (value)
+ set_bit(usage->code, asc->pressed_fn);
+ else
+ clear_bit(usage->code, asc->pressed_fn);
+
+ input_event(input, usage->type, trans->to,
+ value);
+
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int touchbook_input_mapping(struct hid_device *hdev,
+ struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ struct touchbook_key_translation *trans;
+
+ /* Enable all other keys */
+ for (trans = touchbook_fn_keys; trans->from; trans++)
+ set_bit(trans->to, hi->input->keybit);
+
+ return 0;
+}
+
+static ssize_t show_swap_key(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%lu\n", swap_key);
+}
+
+static ssize_t store_swap_key(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ strict_strtoul(buf, 10, &swap_key);
+
+ if (swap_key != 0 && swap_key != 1) {
+ swap_key = 0;
+ return -EINVAL;
+ }
+
+ return count;
+}
+
+static struct device_attribute touchbook_hid_attrs[] = {
+ __ATTR(swap_key, S_IRUGO | S_IWUGO, show_swap_key, store_swap_key),
+};
+
+int touchbook_create_sysfs(struct hid_device *hdev)
+{
+ int i;
+ int r;
+
+ for (i = 0; i < ARRAY_SIZE(touchbook_hid_attrs); i++) {
+ r = device_create_file(&hdev->dev,
+ &touchbook_hid_attrs[i]);
+
+ if (r) {
+ dev_err(&hdev->dev, "failed to create sysfs file\n");
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+void touchbook_remove_sysfs(struct hid_device *hdev)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(touchbook_hid_attrs); i++)
+ device_remove_file(&hdev->dev,
+ &touchbook_hid_attrs[i]);
+}
+
+static int touchbook_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ unsigned long quirks = id->driver_data;
+ struct touchbook_sc *asc;
+ unsigned int connect_mask = HID_CONNECT_DEFAULT;
+ int ret;
+
+ asc = kzalloc(sizeof(*asc), GFP_KERNEL);
+ if (asc == NULL) {
+ dev_err(&hdev->dev, "can't alloc touchbook descriptor\n");
+ return -ENOMEM;
+ }
+
+ asc->quirks = quirks;
+ hid_set_drvdata(hdev, asc);
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ dev_err(&hdev->dev, "parse failed\n");
+ goto err_free;
+ }
+
+ ret = touchbook_create_sysfs(hdev);
+ if (ret) {
+ dev_err(&hdev->dev, "failed to create sysfs entries\n");
+ goto err_free;
+ }
+
+ swap_key = (touchbook_revision >= 4) ? 1 : 0;
+
+ ret = hid_hw_start(hdev, connect_mask);
+ if (ret) {
+ dev_err(&hdev->dev, "hw start failed\n");
+ goto err_free;
+ }
+
+ return 0;
+err_free:
+ kfree(asc);
+ return ret;
+}
+
+static void touchbook_remove(struct hid_device *hdev)
+{
+ hid_hw_stop(hdev);
+ kfree(hid_get_drvdata(hdev));
+ touchbook_remove_sysfs(hdev);
+}
+
+static const struct hid_device_id touchbook_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_ALWAYSINNOVATING,
+ USB_DEVICE_ID_ALWAYSINNOVATING_TOUCH_BOOK) },
+ { }
+};
+
+MODULE_DEVICE_TABLE(hid, touchbook_devices);
+
+static struct hid_driver touchbook_driver = {
+ .name = "touchbook",
+ .id_table = touchbook_devices,
+ .probe = touchbook_probe,
+ .remove = touchbook_remove,
+ .event = touchbook_event,
+ .input_mapping = touchbook_input_mapping,
+};
+
+static int touchbook_init(void)
+{
+ int ret;
+
+ ret = hid_register_driver(&touchbook_driver);
+ if (ret)
+ printk(KERN_ERR "can't register touchbook driver\n");
+
+ return ret;
+}
+
+static void touchbook_exit(void)
+{
+ hid_unregister_driver(&touchbook_driver);
+}
+
+module_init(touchbook_init);
+module_exit(touchbook_exit);
+MODULE_LICENSE("GPL");