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Linux/drivers/hid/hid-roccat-ryos.c

  1 /*
  2  * Roccat Ryos driver for Linux
  3  *
  4  * Copyright (c) 2013 Stefan Achatz <erazor_de@users.sourceforge.net>
  5  */
  6 
  7 /*
  8  * This program is free software; you can redistribute it and/or modify it
  9  * under the terms of the GNU General Public License as published by the Free
 10  * Software Foundation; either version 2 of the License, or (at your option)
 11  * any later version.
 12  */
 13 
 14 #include <linux/types.h>
 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>
 21 #include "hid-ids.h"
 22 #include "hid-roccat-common.h"
 23 
 24 enum {
 25         RYOS_REPORT_NUMBER_SPECIAL = 3,
 26         RYOS_USB_INTERFACE_PROTOCOL = 0,
 27 };
 28 
 29 struct ryos_report_special {
 30         uint8_t number; /* RYOS_REPORT_NUMBER_SPECIAL */
 31         uint8_t data[4];
 32 } __packed;
 33 
 34 static struct class *ryos_class;
 35 
 36 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x04, 0x03);
 37 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile, 0x05, 0x03);
 38 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_primary, 0x06, 0x7d);
 39 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_function, 0x07, 0x5f);
 40 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_macro, 0x08, 0x23);
 41 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_thumbster, 0x09, 0x17);
 42 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_extra, 0x0a, 0x08);
 43 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_easyzone, 0x0b, 0x126);
 44 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(key_mask, 0x0c, 0x06);
 45 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(light, 0x0d, 0x10);
 46 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(macro, 0x0e, 0x7d2);
 47 ROCCAT_COMMON2_BIN_ATTRIBUTE_R(info, 0x0f, 0x08);
 48 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(reset, 0x11, 0x03);
 49 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(light_control, 0x13, 0x08);
 50 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(talk, 0x16, 0x10);
 51 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(stored_lights, 0x17, 0x0566);
 52 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(custom_lights, 0x18, 0x14);
 53 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(light_macro, 0x19, 0x07d2);
 54 
 55 static struct bin_attribute *ryos_bin_attrs[] = {
 56         &bin_attr_control,
 57         &bin_attr_profile,
 58         &bin_attr_keys_primary,
 59         &bin_attr_keys_function,
 60         &bin_attr_keys_macro,
 61         &bin_attr_keys_thumbster,
 62         &bin_attr_keys_extra,
 63         &bin_attr_keys_easyzone,
 64         &bin_attr_key_mask,
 65         &bin_attr_light,
 66         &bin_attr_macro,
 67         &bin_attr_info,
 68         &bin_attr_reset,
 69         &bin_attr_light_control,
 70         &bin_attr_talk,
 71         &bin_attr_stored_lights,
 72         &bin_attr_custom_lights,
 73         &bin_attr_light_macro,
 74         NULL,
 75 };
 76 
 77 static const struct attribute_group ryos_group = {
 78         .bin_attrs = ryos_bin_attrs,
 79 };
 80 
 81 static const struct attribute_group *ryos_groups[] = {
 82         &ryos_group,
 83         NULL,
 84 };
 85 
 86 static int ryos_init_specials(struct hid_device *hdev)
 87 {
 88         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 89         struct usb_device *usb_dev = interface_to_usbdev(intf);
 90         struct roccat_common2_device *ryos;
 91         int retval;
 92 
 93         if (intf->cur_altsetting->desc.bInterfaceProtocol
 94                         != RYOS_USB_INTERFACE_PROTOCOL) {
 95                 hid_set_drvdata(hdev, NULL);
 96                 return 0;
 97         }
 98 
 99         ryos = kzalloc(sizeof(*ryos), GFP_KERNEL);
100         if (!ryos) {
101                 hid_err(hdev, "can't alloc device descriptor\n");
102                 return -ENOMEM;
103         }
104         hid_set_drvdata(hdev, ryos);
105 
106         retval = roccat_common2_device_init_struct(usb_dev, ryos);
107         if (retval) {
108                 hid_err(hdev, "couldn't init Ryos device\n");
109                 goto exit_free;
110         }
111 
112         retval = roccat_connect(ryos_class, hdev,
113                         sizeof(struct ryos_report_special));
114         if (retval < 0) {
115                 hid_err(hdev, "couldn't init char dev\n");
116         } else {
117                 ryos->chrdev_minor = retval;
118                 ryos->roccat_claimed = 1;
119         }
120 
121         return 0;
122 exit_free:
123         kfree(ryos);
124         return retval;
125 }
126 
127 static void ryos_remove_specials(struct hid_device *hdev)
128 {
129         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
130         struct roccat_common2_device *ryos;
131 
132         if (intf->cur_altsetting->desc.bInterfaceProtocol
133                         != RYOS_USB_INTERFACE_PROTOCOL)
134                 return;
135 
136         ryos = hid_get_drvdata(hdev);
137         if (ryos->roccat_claimed)
138                 roccat_disconnect(ryos->chrdev_minor);
139         kfree(ryos);
140 }
141 
142 static int ryos_probe(struct hid_device *hdev,
143                 const struct hid_device_id *id)
144 {
145         int retval;
146 
147         retval = hid_parse(hdev);
148         if (retval) {
149                 hid_err(hdev, "parse failed\n");
150                 goto exit;
151         }
152 
153         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
154         if (retval) {
155                 hid_err(hdev, "hw start failed\n");
156                 goto exit;
157         }
158 
159         retval = ryos_init_specials(hdev);
160         if (retval) {
161                 hid_err(hdev, "couldn't install mouse\n");
162                 goto exit_stop;
163         }
164 
165         return 0;
166 
167 exit_stop:
168         hid_hw_stop(hdev);
169 exit:
170         return retval;
171 }
172 
173 static void ryos_remove(struct hid_device *hdev)
174 {
175         ryos_remove_specials(hdev);
176         hid_hw_stop(hdev);
177 }
178 
179 static int ryos_raw_event(struct hid_device *hdev,
180                 struct hid_report *report, u8 *data, int size)
181 {
182         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
183         struct roccat_common2_device *ryos = hid_get_drvdata(hdev);
184 
185         if (intf->cur_altsetting->desc.bInterfaceProtocol
186                         != RYOS_USB_INTERFACE_PROTOCOL)
187                 return 0;
188 
189         if (data[0] != RYOS_REPORT_NUMBER_SPECIAL)
190                 return 0;
191 
192         if (ryos != NULL && ryos->roccat_claimed)
193                 roccat_report_event(ryos->chrdev_minor, data);
194 
195         return 0;
196 }
197 
198 static const struct hid_device_id ryos_devices[] = {
199         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
200         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
201         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
202         { }
203 };
204 
205 MODULE_DEVICE_TABLE(hid, ryos_devices);
206 
207 static struct hid_driver ryos_driver = {
208                 .name = "ryos",
209                 .id_table = ryos_devices,
210                 .probe = ryos_probe,
211                 .remove = ryos_remove,
212                 .raw_event = ryos_raw_event
213 };
214 
215 static int __init ryos_init(void)
216 {
217         int retval;
218 
219         ryos_class = class_create(THIS_MODULE, "ryos");
220         if (IS_ERR(ryos_class))
221                 return PTR_ERR(ryos_class);
222         ryos_class->dev_groups = ryos_groups;
223 
224         retval = hid_register_driver(&ryos_driver);
225         if (retval)
226                 class_destroy(ryos_class);
227         return retval;
228 }
229 
230 static void __exit ryos_exit(void)
231 {
232         hid_unregister_driver(&ryos_driver);
233         class_destroy(ryos_class);
234 }
235 
236 module_init(ryos_init);
237 module_exit(ryos_exit);
238 
239 MODULE_AUTHOR("Stefan Achatz");
240 MODULE_DESCRIPTION("USB Roccat Ryos MK/Glow/Pro driver");
241 MODULE_LICENSE("GPL v2");
242 

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