1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Roccat Savu driver for Linux
5 * Copyright (c) 2012 Stefan Achatz <erazor_de@users.sourceforge.net>
11 /* Roccat Savu is a gamer mouse with macro keys that can be configured in
15 #include <linux/device.h>
16 #include <linux/input.h>
17 #include <linux/hid.h>
18 #include <linux/module.h>
19 #include <linux/slab.h>
20 #include <linux/hid-roccat.h>
22 #include "hid-roccat-common.h"
23 #include "hid-roccat-savu.h"
25 static struct class *savu_class;
27 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x4, 0x03);
28 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile, 0x5, 0x03);
29 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(general, 0x6, 0x10);
30 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(buttons, 0x7, 0x2f);
31 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(macro, 0x8, 0x0823);
32 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(info, 0x9, 0x08);
33 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(sensor, 0xc, 0x04);
35 static struct bin_attribute *savu_bin_attrs[] = {
46 static const struct attribute_group savu_group = {
47 .bin_attrs = savu_bin_attrs,
50 static const struct attribute_group *savu_groups[] = {
55 static int savu_init_specials(struct hid_device *hdev)
57 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
58 struct usb_device *usb_dev = interface_to_usbdev(intf);
59 struct roccat_common2_device *savu;
62 if (intf->cur_altsetting->desc.bInterfaceProtocol
63 != USB_INTERFACE_PROTOCOL_MOUSE) {
64 hid_set_drvdata(hdev, NULL);
68 savu = kzalloc(sizeof(*savu), GFP_KERNEL);
70 hid_err(hdev, "can't alloc device descriptor\n");
73 hid_set_drvdata(hdev, savu);
75 retval = roccat_common2_device_init_struct(usb_dev, savu);
77 hid_err(hdev, "couldn't init Savu device\n");
81 retval = roccat_connect(savu_class, hdev,
82 sizeof(struct savu_roccat_report));
84 hid_err(hdev, "couldn't init char dev\n");
86 savu->chrdev_minor = retval;
87 savu->roccat_claimed = 1;
96 static void savu_remove_specials(struct hid_device *hdev)
98 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
99 struct roccat_common2_device *savu;
101 if (intf->cur_altsetting->desc.bInterfaceProtocol
102 != USB_INTERFACE_PROTOCOL_MOUSE)
105 savu = hid_get_drvdata(hdev);
106 if (savu->roccat_claimed)
107 roccat_disconnect(savu->chrdev_minor);
111 static int savu_probe(struct hid_device *hdev,
112 const struct hid_device_id *id)
116 retval = hid_parse(hdev);
118 hid_err(hdev, "parse failed\n");
122 retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
124 hid_err(hdev, "hw start failed\n");
128 retval = savu_init_specials(hdev);
130 hid_err(hdev, "couldn't install mouse\n");
142 static void savu_remove(struct hid_device *hdev)
144 savu_remove_specials(hdev);
148 static void savu_report_to_chrdev(struct roccat_common2_device const *savu,
151 struct savu_roccat_report roccat_report;
152 struct savu_mouse_report_special const *special_report;
154 if (data[0] != SAVU_MOUSE_REPORT_NUMBER_SPECIAL)
157 special_report = (struct savu_mouse_report_special const *)data;
159 roccat_report.type = special_report->type;
160 roccat_report.data[0] = special_report->data[0];
161 roccat_report.data[1] = special_report->data[1];
162 roccat_report_event(savu->chrdev_minor,
163 (uint8_t const *)&roccat_report);
166 static int savu_raw_event(struct hid_device *hdev,
167 struct hid_report *report, u8 *data, int size)
169 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
170 struct roccat_common2_device *savu = hid_get_drvdata(hdev);
172 if (intf->cur_altsetting->desc.bInterfaceProtocol
173 != USB_INTERFACE_PROTOCOL_MOUSE)
179 if (savu->roccat_claimed)
180 savu_report_to_chrdev(savu, data);
185 static const struct hid_device_id savu_devices[] = {
186 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
190 MODULE_DEVICE_TABLE(hid, savu_devices);
192 static struct hid_driver savu_driver = {
194 .id_table = savu_devices,
196 .remove = savu_remove,
197 .raw_event = savu_raw_event
200 static int __init savu_init(void)
204 savu_class = class_create(THIS_MODULE, "savu");
205 if (IS_ERR(savu_class))
206 return PTR_ERR(savu_class);
207 savu_class->dev_groups = savu_groups;
209 retval = hid_register_driver(&savu_driver);
211 class_destroy(savu_class);
215 static void __exit savu_exit(void)
217 hid_unregister_driver(&savu_driver);
218 class_destroy(savu_class);
221 module_init(savu_init);
222 module_exit(savu_exit);
224 MODULE_AUTHOR("Stefan Achatz");
225 MODULE_DESCRIPTION("USB Roccat Savu driver");
226 MODULE_LICENSE("GPL v2");