drivers/hid/hid-roccat-ryos.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Roccat Ryos driver for Linux
   4  *
   5  * Copyright (c) 2013 Stefan Achatz <erazor_de@users.sourceforge.net>
   6  */
   7
   8 /*
   9  */
  10
  11 #include <linux/types.h>
  12 #include <linux/device.h>
  13 #include <linux/input.h>
  14 #include <linux/hid.h>
  15 #include <linux/module.h>
  16 #include <linux/slab.h>
  17 #include <linux/hid-roccat.h>
  18 #include "hid-ids.h"
  19 #include "hid-roccat-common.h"
  20
  21 enum {
  22         RYOS_REPORT_NUMBER_SPECIAL = 3,
  23         RYOS_USB_INTERFACE_PROTOCOL = 0,
  24 };
  25
  26 struct ryos_report_special {
  27         uint8_t number; /* RYOS_REPORT_NUMBER_SPECIAL */
  28         uint8_t data[4];
  29 } __packed;
  30
  31 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x04, 0x03);
  32 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile, 0x05, 0x03);
  33 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_primary, 0x06, 0x7d);
  34 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_function, 0x07, 0x5f);
  35 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_macro, 0x08, 0x23);
  36 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_thumbster, 0x09, 0x17);
  37 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_extra, 0x0a, 0x08);
  38 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_easyzone, 0x0b, 0x126);
  39 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(key_mask, 0x0c, 0x06);
  40 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(light, 0x0d, 0x10);
  41 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(macro, 0x0e, 0x7d2);
  42 ROCCAT_COMMON2_BIN_ATTRIBUTE_R(info, 0x0f, 0x08);
  43 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(reset, 0x11, 0x03);
  44 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(light_control, 0x13, 0x08);
  45 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(talk, 0x16, 0x10);
  46 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(stored_lights, 0x17, 0x0566);
  47 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(custom_lights, 0x18, 0x14);
  48 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(light_macro, 0x19, 0x07d2);
  49
  50 static struct bin_attribute *ryos_bin_attrs[] = {
  51         &bin_attr_control,
  52         &bin_attr_profile,
  53         &bin_attr_keys_primary,
  54         &bin_attr_keys_function,
  55         &bin_attr_keys_macro,
  56         &bin_attr_keys_thumbster,
  57         &bin_attr_keys_extra,
  58         &bin_attr_keys_easyzone,
  59         &bin_attr_key_mask,
  60         &bin_attr_light,
  61         &bin_attr_macro,
  62         &bin_attr_info,
  63         &bin_attr_reset,
  64         &bin_attr_light_control,
  65         &bin_attr_talk,
  66         &bin_attr_stored_lights,
  67         &bin_attr_custom_lights,
  68         &bin_attr_light_macro,
  69         NULL,
  70 };
  71
  72 static const struct attribute_group ryos_group = {
  73         .bin_attrs = ryos_bin_attrs,
  74 };
  75
  76 static const struct attribute_group *ryos_groups[] = {
  77         &ryos_group,
  78         NULL,
  79 };
  80
  81 static const struct class ryos_class = {
  82         .name = "ryos",
  83         .dev_groups = ryos_groups,
  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         if (!hid_is_usb(hdev))
 148                 return -EINVAL;
 149
 150         retval = hid_parse(hdev);
 151         if (retval) {
 152                 hid_err(hdev, "parse failed\n");
 153                 goto exit;
 154         }
 155
 156         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 157         if (retval) {
 158                 hid_err(hdev, "hw start failed\n");
 159                 goto exit;
 160         }
 161
 162         retval = ryos_init_specials(hdev);
 163         if (retval) {
 164                 hid_err(hdev, "couldn't install mouse\n");
 165                 goto exit_stop;
 166         }
 167
 168         return 0;
 169
 170 exit_stop:
 171         hid_hw_stop(hdev);
 172 exit:
 173         return retval;
 174 }
 175
 176 static void ryos_remove(struct hid_device *hdev)
 177 {
 178         ryos_remove_specials(hdev);
 179         hid_hw_stop(hdev);
 180 }
 181
 182 static int ryos_raw_event(struct hid_device *hdev,
 183                 struct hid_report *report, u8 *data, int size)
 184 {
 185         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 186         struct roccat_common2_device *ryos = hid_get_drvdata(hdev);
 187
 188         if (intf->cur_altsetting->desc.bInterfaceProtocol
 189                         != RYOS_USB_INTERFACE_PROTOCOL)
 190                 return 0;
 191
 192         if (data[0] != RYOS_REPORT_NUMBER_SPECIAL)
 193                 return 0;
 194
 195         if (ryos != NULL && ryos->roccat_claimed)
 196                 roccat_report_event(ryos->chrdev_minor, data);
 197
 198         return 0;
 199 }
 200
 201 static const struct hid_device_id ryos_devices[] = {
 202         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
 203         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
 204         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
 205         { }
 206 };
 207
 208 MODULE_DEVICE_TABLE(hid, ryos_devices);
 209
 210 static struct hid_driver ryos_driver = {
 211                 .name = "ryos",
 212                 .id_table = ryos_devices,
 213                 .probe = ryos_probe,
 214                 .remove = ryos_remove,
 215                 .raw_event = ryos_raw_event
 216 };
 217
 218 static int __init ryos_init(void)
 219 {
 220         int retval;
 221
 222         retval = class_register(&ryos_class);
 223         if (retval)
 224                 return retval;
 225
 226         retval = hid_register_driver(&ryos_driver);
 227         if (retval)
 228                 class_unregister(&ryos_class);
 229         return retval;
 230 }
 231
 232 static void __exit ryos_exit(void)
 233 {
 234         hid_unregister_driver(&ryos_driver);
 235         class_unregister(&ryos_class);
 236 }
 237
 238 module_init(ryos_init);
 239 module_exit(ryos_exit);
 240
 241 MODULE_AUTHOR("Stefan Achatz");
 242 MODULE_DESCRIPTION("USB Roccat Ryos MK/Glow/Pro driver");
 243 MODULE_LICENSE("GPL v2");