--- /dev/null
+/*
+ * Roccat Arvo driver for Linux
+ *
+ * Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net>
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * Roccat Arvo is a gamer keyboard with 5 macro keys that can be configured in
+ * 5 profiles.
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/hid.h>
+#include <linux/usb.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include "hid-ids.h"
+#include "hid-roccat.h"
+#include "hid-roccat-arvo.h"
+
+static struct class *arvo_class;
+
+static int arvo_receive(struct usb_device *usb_dev, uint usb_command,
+ void *buf, uint size)
+{
+ int len;
+
+ len = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
+ USB_REQ_CLEAR_FEATURE,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ usb_command, 0, buf, size, USB_CTRL_SET_TIMEOUT);
+
+ return (len != size) ? -EIO : 0;
+}
+
+static int arvo_send(struct usb_device *usb_dev, uint usb_command,
+ void const *buf, uint size)
+{
+ int len;
+
+ len = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_CONFIGURATION,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
+ usb_command, 0, (void *)buf, size, USB_CTRL_SET_TIMEOUT);
+
+ return (len != size) ? -EIO : 0;
+}
+
+static ssize_t arvo_sysfs_show_mode_key(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct arvo_device *arvo =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
+ struct usb_device *usb_dev =
+ interface_to_usbdev(to_usb_interface(dev->parent->parent));
+ struct arvo_mode_key *temp_buf;
+ int retval;
+
+ temp_buf = kmalloc(sizeof(struct arvo_mode_key), GFP_KERNEL);
+ if (!temp_buf)
+ return -ENOMEM;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_receive(usb_dev, ARVO_USB_COMMAND_MODE_KEY,
+ temp_buf, sizeof(struct arvo_mode_key));
+ mutex_unlock(&arvo->arvo_lock);
+ if (retval)
+ goto out;
+
+ retval = snprintf(buf, PAGE_SIZE, "%d\n", temp_buf->state);
+out:
+ kfree(temp_buf);
+ return retval;
+}
+
+static ssize_t arvo_sysfs_set_mode_key(struct device *dev,
+ struct device_attribute *attr, char const *buf, size_t size)
+{
+ struct arvo_device *arvo =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
+ struct usb_device *usb_dev =
+ interface_to_usbdev(to_usb_interface(dev->parent->parent));
+ struct arvo_mode_key *temp_buf;
+ unsigned long state;
+ int retval;
+
+ temp_buf = kmalloc(sizeof(struct arvo_mode_key), GFP_KERNEL);
+ if (!temp_buf)
+ return -ENOMEM;
+
+ retval = strict_strtoul(buf, 10, &state);
+ if (retval)
+ goto out;
+
+ temp_buf->command = ARVO_COMMAND_MODE_KEY;
+ temp_buf->state = state;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_send(usb_dev, ARVO_USB_COMMAND_MODE_KEY,
+ temp_buf, sizeof(struct arvo_mode_key));
+ mutex_unlock(&arvo->arvo_lock);
+ if (retval)
+ goto out;
+
+ retval = size;
+out:
+ kfree(temp_buf);
+ return retval;
+}
+
+static ssize_t arvo_sysfs_show_key_mask(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct arvo_device *arvo =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
+ struct usb_device *usb_dev =
+ interface_to_usbdev(to_usb_interface(dev->parent->parent));
+ struct arvo_key_mask *temp_buf;
+ int retval;
+
+ temp_buf = kmalloc(sizeof(struct arvo_key_mask), GFP_KERNEL);
+ if (!temp_buf)
+ return -ENOMEM;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_receive(usb_dev, ARVO_USB_COMMAND_KEY_MASK,
+ temp_buf, sizeof(struct arvo_key_mask));
+ mutex_unlock(&arvo->arvo_lock);
+ if (retval)
+ goto out;
+
+ retval = snprintf(buf, PAGE_SIZE, "%d\n", temp_buf->key_mask);
+out:
+ kfree(temp_buf);
+ return retval;
+}
+
+static ssize_t arvo_sysfs_set_key_mask(struct device *dev,
+ struct device_attribute *attr, char const *buf, size_t size)
+{
+ struct arvo_device *arvo =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
+ struct usb_device *usb_dev =
+ interface_to_usbdev(to_usb_interface(dev->parent->parent));
+ struct arvo_key_mask *temp_buf;
+ unsigned long key_mask;
+ int retval;
+
+ temp_buf = kmalloc(sizeof(struct arvo_key_mask), GFP_KERNEL);
+ if (!temp_buf)
+ return -ENOMEM;
+
+ retval = strict_strtoul(buf, 10, &key_mask);
+ if (retval)
+ goto out;
+
+ temp_buf->command = ARVO_COMMAND_KEY_MASK;
+ temp_buf->key_mask = key_mask;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_send(usb_dev, ARVO_USB_COMMAND_KEY_MASK,
+ temp_buf, sizeof(struct arvo_key_mask));
+ mutex_unlock(&arvo->arvo_lock);
+ if (retval)
+ goto out;
+
+ retval = size;
+out:
+ kfree(temp_buf);
+ return retval;
+}
+
+/* retval is 1-5 on success, < 0 on error */
+static int arvo_get_actual_profile(struct usb_device *usb_dev)
+{
+ struct arvo_actual_profile *temp_buf;
+ int retval;
+
+ temp_buf = kmalloc(sizeof(struct arvo_actual_profile), GFP_KERNEL);
+ if (!temp_buf)
+ return -ENOMEM;
+
+ retval = arvo_receive(usb_dev, ARVO_USB_COMMAND_ACTUAL_PROFILE,
+ temp_buf, sizeof(struct arvo_actual_profile));
+
+ if (!retval)
+ retval = temp_buf->actual_profile;
+
+ kfree(temp_buf);
+ return retval;
+}
+
+static ssize_t arvo_sysfs_show_actual_profile(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct arvo_device *arvo =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", arvo->actual_profile);
+}
+
+static ssize_t arvo_sysfs_set_actual_profile(struct device *dev,
+ struct device_attribute *attr, char const *buf, size_t size)
+{
+ struct arvo_device *arvo =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
+ struct usb_device *usb_dev =
+ interface_to_usbdev(to_usb_interface(dev->parent->parent));
+ struct arvo_actual_profile *temp_buf;
+ unsigned long profile;
+ int retval;
+
+ temp_buf = kmalloc(sizeof(struct arvo_actual_profile), GFP_KERNEL);
+ if (!temp_buf)
+ return -ENOMEM;
+
+ retval = strict_strtoul(buf, 10, &profile);
+ if (retval)
+ goto out;
+
+ temp_buf->command = ARVO_COMMAND_ACTUAL_PROFILE;
+ temp_buf->actual_profile = profile;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_send(usb_dev, ARVO_USB_COMMAND_ACTUAL_PROFILE,
+ temp_buf, sizeof(struct arvo_actual_profile));
+ if (!retval) {
+ arvo->actual_profile = profile;
+ retval = size;
+ }
+ mutex_unlock(&arvo->arvo_lock);
+
+out:
+ kfree(temp_buf);
+ return retval;
+}
+
+static ssize_t arvo_sysfs_write(struct file *fp,
+ struct kobject *kobj, void const *buf,
+ loff_t off, size_t count, size_t real_size, uint command)
+{
+ struct device *dev =
+ container_of(kobj, struct device, kobj)->parent->parent;
+ struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev));
+ struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+ int retval;
+
+ if (off != 0 || count != real_size)
+ return -EINVAL;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_send(usb_dev, command, buf, real_size);
+ mutex_unlock(&arvo->arvo_lock);
+
+ return (retval ? retval : real_size);
+}
+
+static ssize_t arvo_sysfs_read(struct file *fp,
+ struct kobject *kobj, void *buf, loff_t off,
+ size_t count, size_t real_size, uint command)
+{
+ struct device *dev =
+ container_of(kobj, struct device, kobj)->parent->parent;
+ struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev));
+ struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+ int retval;
+
+ if (off >= real_size)
+ return 0;
+
+ if (off != 0 || count != real_size)
+ return -EINVAL;
+
+ mutex_lock(&arvo->arvo_lock);
+ retval = arvo_receive(usb_dev, command, buf, real_size);
+ mutex_unlock(&arvo->arvo_lock);
+
+ return (retval ? retval : real_size);
+}
+
+static ssize_t arvo_sysfs_write_button(struct file *fp,
+ struct kobject *kobj, struct bin_attribute *attr, char *buf,
+ loff_t off, size_t count)
+{
+ return arvo_sysfs_write(fp, kobj, buf, off, count,
+ sizeof(struct arvo_button), ARVO_USB_COMMAND_BUTTON);
+}
+
+static ssize_t arvo_sysfs_read_info(struct file *fp,
+ struct kobject *kobj, struct bin_attribute *attr, char *buf,
+ loff_t off, size_t count)
+{
+ return arvo_sysfs_read(fp, kobj, buf, off, count,
+ sizeof(struct arvo_info), ARVO_USB_COMMAND_INFO);
+}
+
+
+static struct device_attribute arvo_attributes[] = {
+ __ATTR(mode_key, 0660,
+ arvo_sysfs_show_mode_key, arvo_sysfs_set_mode_key),
+ __ATTR(key_mask, 0660,
+ arvo_sysfs_show_key_mask, arvo_sysfs_set_key_mask),
+ __ATTR(actual_profile, 0660,
+ arvo_sysfs_show_actual_profile,
+ arvo_sysfs_set_actual_profile),
+ __ATTR_NULL
+};
+
+static struct bin_attribute arvo_bin_attributes[] = {
+ {
+ .attr = { .name = "button", .mode = 0220 },
+ .size = sizeof(struct arvo_button),
+ .write = arvo_sysfs_write_button
+ },
+ {
+ .attr = { .name = "info", .mode = 0440 },
+ .size = sizeof(struct arvo_info),
+ .read = arvo_sysfs_read_info
+ },
+ __ATTR_NULL
+};
+
+static int arvo_init_arvo_device_struct(struct usb_device *usb_dev,
+ struct arvo_device *arvo)
+{
+ int retval;
+
+ mutex_init(&arvo->arvo_lock);
+
+ retval = arvo_get_actual_profile(usb_dev);
+ if (retval < 0)
+ return retval;
+ arvo->actual_profile = retval;
+
+ return 0;
+}
+
+static int arvo_init_specials(struct hid_device *hdev)
+{
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct usb_device *usb_dev = interface_to_usbdev(intf);
+ struct arvo_device *arvo;
+ int retval;
+
+ if (intf->cur_altsetting->desc.bInterfaceProtocol
+ == USB_INTERFACE_PROTOCOL_KEYBOARD) {
+ hid_set_drvdata(hdev, NULL);
+ return 0;
+ }
+
+ arvo = kzalloc(sizeof(*arvo), GFP_KERNEL);
+ if (!arvo) {
+ dev_err(&hdev->dev, "can't alloc device descriptor\n");
+ return -ENOMEM;
+ }
+ hid_set_drvdata(hdev, arvo);
+
+ retval = arvo_init_arvo_device_struct(usb_dev, arvo);
+ if (retval) {
+ dev_err(&hdev->dev,
+ "couldn't init struct arvo_device\n");
+ goto exit_free;
+ }
+
+ retval = roccat_connect(arvo_class, hdev);
+ if (retval < 0) {
+ dev_err(&hdev->dev, "couldn't init char dev\n");
+ } else {
+ arvo->chrdev_minor = retval;
+ arvo->roccat_claimed = 1;
+ }
+
+ return 0;
+exit_free:
+ kfree(arvo);
+ return retval;
+}
+
+static void arvo_remove_specials(struct hid_device *hdev)
+{
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct arvo_device *arvo;
+
+ if (intf->cur_altsetting->desc.bInterfaceProtocol
+ == USB_INTERFACE_PROTOCOL_KEYBOARD)
+ return;
+
+ arvo = hid_get_drvdata(hdev);
+ if (arvo->roccat_claimed)
+ roccat_disconnect(arvo->chrdev_minor);
+ kfree(arvo);
+}
+
+static int arvo_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int retval;
+
+ retval = hid_parse(hdev);
+ if (retval) {
+ dev_err(&hdev->dev, "parse failed\n");
+ goto exit;
+ }
+
+ retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (retval) {
+ dev_err(&hdev->dev, "hw start failed\n");
+ goto exit;
+ }
+
+ retval = arvo_init_specials(hdev);
+ if (retval) {
+ dev_err(&hdev->dev, "couldn't install keyboard\n");
+ goto exit_stop;
+ }
+
+ return 0;
+
+exit_stop:
+ hid_hw_stop(hdev);
+exit:
+ return retval;
+}
+
+static void arvo_remove(struct hid_device *hdev)
+{
+ arvo_remove_specials(hdev);
+ hid_hw_stop(hdev);
+}
+
+static void arvo_report_to_chrdev(struct arvo_device const *arvo,
+ u8 const *data)
+{
+ struct arvo_special_report const *special_report;
+ struct arvo_roccat_report roccat_report;
+
+ special_report = (struct arvo_special_report const *)data;
+
+ roccat_report.profile = arvo->actual_profile;
+ roccat_report.button = special_report->event &
+ ARVO_SPECIAL_REPORT_EVENT_MASK_BUTTON;
+ if ((special_report->event & ARVO_SPECIAL_REPORT_EVENT_MASK_ACTION) ==
+ ARVO_SPECIAL_REPORT_EVENT_ACTION_PRESS)
+ roccat_report.action = ARVO_ROCCAT_REPORT_ACTION_PRESS;
+ else
+ roccat_report.action = ARVO_ROCCAT_REPORT_ACTION_RELEASE;
+
+ roccat_report_event(arvo->chrdev_minor, (uint8_t const *)&roccat_report,
+ sizeof(struct arvo_roccat_report));
+}
+
+static int arvo_raw_event(struct hid_device *hdev,
+ struct hid_report *report, u8 *data, int size)
+{
+ struct arvo_device *arvo = hid_get_drvdata(hdev);
+
+ if (size != 3)
+ return 0;
+
+ if (arvo->roccat_claimed)
+ arvo_report_to_chrdev(arvo, data);
+
+ return 0;
+}
+
+static const struct hid_device_id arvo_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
+ { }
+};
+
+MODULE_DEVICE_TABLE(hid, arvo_devices);
+
+static struct hid_driver arvo_driver = {
+ .name = "arvo",
+ .id_table = arvo_devices,
+ .probe = arvo_probe,
+ .remove = arvo_remove,
+ .raw_event = arvo_raw_event
+};
+
+static int __init arvo_init(void)
+{
+ int retval;
+
+ arvo_class = class_create(THIS_MODULE, "arvo");
+ if (IS_ERR(arvo_class))
+ return PTR_ERR(arvo_class);
+ arvo_class->dev_attrs = arvo_attributes;
+ arvo_class->dev_bin_attrs = arvo_bin_attributes;
+
+ retval = hid_register_driver(&arvo_driver);
+ if (retval)
+ class_destroy(arvo_class);
+ return retval;
+}
+
+static void __exit arvo_exit(void)
+{
+ class_destroy(arvo_class);
+ hid_unregister_driver(&arvo_driver);
+}
+
+module_init(arvo_init);
+module_exit(arvo_exit);
+
+MODULE_AUTHOR("Stefan Achatz");
+MODULE_DESCRIPTION("USB Roccat Arvo driver");
+MODULE_LICENSE("GPL v2");
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff