drivers/hid/hid-roccat-konepure.c

   1 /*
   2  * Roccat KonePure driver for Linux
   3  *
   4  * Copyright (c) 2012 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 /*
  15  * Roccat KonePure is a smaller version of KoneXTD with less buttons and lights.
  16  */
  17
  18 #include <linux/device.h>
  19 #include <linux/input.h>
  20 #include <linux/hid.h>
  21 #include <linux/module.h>
  22 #include <linux/slab.h>
  23 #include <linux/hid-roccat.h>
  24 #include "hid-ids.h"
  25 #include "hid-roccat-common.h"
  26 #include "hid-roccat-konepure.h"
  27
  28 static struct class *konepure_class;
  29
  30 static ssize_t konepure_sysfs_read(struct file *fp, struct kobject *kobj,
  31                 char *buf, loff_t off, size_t count,
  32                 size_t real_size, uint command)
  33 {
  34         struct device *dev =
  35                         container_of(kobj, struct device, kobj)->parent->parent;
  36         struct konepure_device *konepure = hid_get_drvdata(dev_get_drvdata(dev));
  37         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
  38         int retval;
  39
  40         if (off >= real_size)
  41                 return 0;
  42
  43         if (off != 0 || count != real_size)
  44                 return -EINVAL;
  45
  46         mutex_lock(&konepure->konepure_lock);
  47         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
  48         mutex_unlock(&konepure->konepure_lock);
  49
  50         return retval ? retval : real_size;
  51 }
  52
  53 static ssize_t konepure_sysfs_write(struct file *fp, struct kobject *kobj,
  54                 void const *buf, loff_t off, size_t count,
  55                 size_t real_size, uint command)
  56 {
  57         struct device *dev =
  58                         container_of(kobj, struct device, kobj)->parent->parent;
  59         struct konepure_device *konepure = hid_get_drvdata(dev_get_drvdata(dev));
  60         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
  61         int retval;
  62
  63         if (off != 0 || count != real_size)
  64                 return -EINVAL;
  65
  66         mutex_lock(&konepure->konepure_lock);
  67         retval = roccat_common2_send_with_status(usb_dev, command,
  68                         (void *)buf, real_size);
  69         mutex_unlock(&konepure->konepure_lock);
  70
  71         return retval ? retval : real_size;
  72 }
  73
  74 #define KONEPURE_SYSFS_W(thingy, THINGY) \
  75 static ssize_t konepure_sysfs_write_ ## thingy(struct file *fp, \
  76                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
  77                 loff_t off, size_t count) \
  78 { \
  79         return konepure_sysfs_write(fp, kobj, buf, off, count, \
  80                         KONEPURE_SIZE_ ## THINGY, KONEPURE_COMMAND_ ## THINGY); \
  81 }
  82
  83 #define KONEPURE_SYSFS_R(thingy, THINGY) \
  84 static ssize_t konepure_sysfs_read_ ## thingy(struct file *fp, \
  85                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
  86                 loff_t off, size_t count) \
  87 { \
  88         return konepure_sysfs_read(fp, kobj, buf, off, count, \
  89                         KONEPURE_SIZE_ ## THINGY, KONEPURE_COMMAND_ ## THINGY); \
  90 }
  91
  92 #define KONEPURE_SYSFS_RW(thingy, THINGY) \
  93 KONEPURE_SYSFS_W(thingy, THINGY) \
  94 KONEPURE_SYSFS_R(thingy, THINGY)
  95
  96 #define KONEPURE_BIN_ATTRIBUTE_RW(thingy, THINGY) \
  97 { \
  98         .attr = { .name = #thingy, .mode = 0660 }, \
  99         .size = KONEPURE_SIZE_ ## THINGY, \
 100         .read = konepure_sysfs_read_ ## thingy, \
 101         .write = konepure_sysfs_write_ ## thingy \
 102 }
 103
 104 #define KONEPURE_BIN_ATTRIBUTE_R(thingy, THINGY) \
 105 { \
 106         .attr = { .name = #thingy, .mode = 0440 }, \
 107         .size = KONEPURE_SIZE_ ## THINGY, \
 108         .read = konepure_sysfs_read_ ## thingy, \
 109 }
 110
 111 #define KONEPURE_BIN_ATTRIBUTE_W(thingy, THINGY) \
 112 { \
 113         .attr = { .name = #thingy, .mode = 0220 }, \
 114         .size = KONEPURE_SIZE_ ## THINGY, \
 115         .write = konepure_sysfs_write_ ## thingy \
 116 }
 117
 118 KONEPURE_SYSFS_RW(actual_profile, ACTUAL_PROFILE)
 119 KONEPURE_SYSFS_W(control, CONTROL)
 120 KONEPURE_SYSFS_RW(info, INFO)
 121 KONEPURE_SYSFS_W(talk, TALK)
 122 KONEPURE_SYSFS_W(macro, MACRO)
 123 KONEPURE_SYSFS_RW(sensor, SENSOR)
 124 KONEPURE_SYSFS_RW(tcu, TCU)
 125 KONEPURE_SYSFS_R(tcu_image, TCU_IMAGE)
 126 KONEPURE_SYSFS_RW(profile_settings, PROFILE_SETTINGS)
 127 KONEPURE_SYSFS_RW(profile_buttons, PROFILE_BUTTONS)
 128
 129 static struct bin_attribute konepure_bin_attributes[] = {
 130         KONEPURE_BIN_ATTRIBUTE_RW(actual_profile, ACTUAL_PROFILE),
 131         KONEPURE_BIN_ATTRIBUTE_W(control, CONTROL),
 132         KONEPURE_BIN_ATTRIBUTE_RW(info, INFO),
 133         KONEPURE_BIN_ATTRIBUTE_W(talk, TALK),
 134         KONEPURE_BIN_ATTRIBUTE_W(macro, MACRO),
 135         KONEPURE_BIN_ATTRIBUTE_RW(sensor, SENSOR),
 136         KONEPURE_BIN_ATTRIBUTE_RW(tcu, TCU),
 137         KONEPURE_BIN_ATTRIBUTE_R(tcu_image, TCU_IMAGE),
 138         KONEPURE_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS),
 139         KONEPURE_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS),
 140         __ATTR_NULL
 141 };
 142
 143 static int konepure_init_konepure_device_struct(struct usb_device *usb_dev,
 144                 struct konepure_device *konepure)
 145 {
 146         mutex_init(&konepure->konepure_lock);
 147
 148         return 0;
 149 }
 150
 151 static int konepure_init_specials(struct hid_device *hdev)
 152 {
 153         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 154         struct usb_device *usb_dev = interface_to_usbdev(intf);
 155         struct konepure_device *konepure;
 156         int retval;
 157
 158         if (intf->cur_altsetting->desc.bInterfaceProtocol
 159                         != USB_INTERFACE_PROTOCOL_MOUSE) {
 160                 hid_set_drvdata(hdev, NULL);
 161                 return 0;
 162         }
 163
 164         konepure = kzalloc(sizeof(*konepure), GFP_KERNEL);
 165         if (!konepure) {
 166                 hid_err(hdev, "can't alloc device descriptor\n");
 167                 return -ENOMEM;
 168         }
 169         hid_set_drvdata(hdev, konepure);
 170
 171         retval = konepure_init_konepure_device_struct(usb_dev, konepure);
 172         if (retval) {
 173                 hid_err(hdev, "couldn't init struct konepure_device\n");
 174                 goto exit_free;
 175         }
 176
 177         retval = roccat_connect(konepure_class, hdev,
 178                         sizeof(struct konepure_mouse_report_button));
 179         if (retval < 0) {
 180                 hid_err(hdev, "couldn't init char dev\n");
 181         } else {
 182                 konepure->chrdev_minor = retval;
 183                 konepure->roccat_claimed = 1;
 184         }
 185
 186         return 0;
 187 exit_free:
 188         kfree(konepure);
 189         return retval;
 190 }
 191
 192 static void konepure_remove_specials(struct hid_device *hdev)
 193 {
 194         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 195         struct konepure_device *konepure;
 196
 197         if (intf->cur_altsetting->desc.bInterfaceProtocol
 198                         != USB_INTERFACE_PROTOCOL_MOUSE)
 199                 return;
 200
 201         konepure = hid_get_drvdata(hdev);
 202         if (konepure->roccat_claimed)
 203                 roccat_disconnect(konepure->chrdev_minor);
 204         kfree(konepure);
 205 }
 206
 207 static int konepure_probe(struct hid_device *hdev,
 208                 const struct hid_device_id *id)
 209 {
 210         int retval;
 211
 212         retval = hid_parse(hdev);
 213         if (retval) {
 214                 hid_err(hdev, "parse failed\n");
 215                 goto exit;
 216         }
 217
 218         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 219         if (retval) {
 220                 hid_err(hdev, "hw start failed\n");
 221                 goto exit;
 222         }
 223
 224         retval = konepure_init_specials(hdev);
 225         if (retval) {
 226                 hid_err(hdev, "couldn't install mouse\n");
 227                 goto exit_stop;
 228         }
 229
 230         return 0;
 231
 232 exit_stop:
 233         hid_hw_stop(hdev);
 234 exit:
 235         return retval;
 236 }
 237
 238 static void konepure_remove(struct hid_device *hdev)
 239 {
 240         konepure_remove_specials(hdev);
 241         hid_hw_stop(hdev);
 242 }
 243
 244 static int konepure_raw_event(struct hid_device *hdev,
 245                 struct hid_report *report, u8 *data, int size)
 246 {
 247         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 248         struct konepure_device *konepure = hid_get_drvdata(hdev);
 249
 250         if (intf->cur_altsetting->desc.bInterfaceProtocol
 251                         != USB_INTERFACE_PROTOCOL_MOUSE)
 252                 return 0;
 253
 254         if (data[0] != KONEPURE_MOUSE_REPORT_NUMBER_BUTTON)
 255                 return 0;
 256
 257         if (konepure != NULL && konepure->roccat_claimed)
 258                 roccat_report_event(konepure->chrdev_minor, data);
 259
 260         return 0;
 261 }
 262
 263 static const struct hid_device_id konepure_devices[] = {
 264         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
 265         { }
 266 };
 267
 268 MODULE_DEVICE_TABLE(hid, konepure_devices);
 269
 270 static struct hid_driver konepure_driver = {
 271                 .name = "konepure",
 272                 .id_table = konepure_devices,
 273                 .probe = konepure_probe,
 274                 .remove = konepure_remove,
 275                 .raw_event = konepure_raw_event
 276 };
 277
 278 static int __init konepure_init(void)
 279 {
 280         int retval;
 281
 282         konepure_class = class_create(THIS_MODULE, "konepure");
 283         if (IS_ERR(konepure_class))
 284                 return PTR_ERR(konepure_class);
 285         konepure_class->dev_bin_attrs = konepure_bin_attributes;
 286
 287         retval = hid_register_driver(&konepure_driver);
 288         if (retval)
 289                 class_destroy(konepure_class);
 290         return retval;
 291 }
 292
 293 static void __exit konepure_exit(void)
 294 {
 295         hid_unregister_driver(&konepure_driver);
 296         class_destroy(konepure_class);
 297 }
 298
 299 module_init(konepure_init);
 300 module_exit(konepure_exit);
 301
 302 MODULE_AUTHOR("Stefan Achatz");
 303 MODULE_DESCRIPTION("USB Roccat KonePure driver");
 304 MODULE_LICENSE("GPL v2");