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");