linux/drivers/hid/hid-roccat-konepure.c
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   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
  28static struct class *konepure_class;
  29
  30static 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
  53static 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) \
  75static 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) \
  84static 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) \
  93KONEPURE_SYSFS_W(thingy, THINGY) \
  94KONEPURE_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
 118KONEPURE_SYSFS_RW(actual_profile, ACTUAL_PROFILE)
 119KONEPURE_SYSFS_W(control, CONTROL)
 120KONEPURE_SYSFS_RW(info, INFO)
 121KONEPURE_SYSFS_W(talk, TALK)
 122KONEPURE_SYSFS_W(macro, MACRO)
 123KONEPURE_SYSFS_RW(sensor, SENSOR)
 124KONEPURE_SYSFS_RW(tcu, TCU)
 125KONEPURE_SYSFS_R(tcu_image, TCU_IMAGE)
 126KONEPURE_SYSFS_RW(profile_settings, PROFILE_SETTINGS)
 127KONEPURE_SYSFS_RW(profile_buttons, PROFILE_BUTTONS)
 128
 129static 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
 143static 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
 151static 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;
 187exit_free:
 188        kfree(konepure);
 189        return retval;
 190}
 191
 192static 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
 207static 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
 232exit_stop:
 233        hid_hw_stop(hdev);
 234exit:
 235        return retval;
 236}
 237
 238static void konepure_remove(struct hid_device *hdev)
 239{
 240        konepure_remove_specials(hdev);
 241        hid_hw_stop(hdev);
 242}
 243
 244static 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
 263static const struct hid_device_id konepure_devices[] = {
 264        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
 265        { }
 266};
 267
 268MODULE_DEVICE_TABLE(hid, konepure_devices);
 269
 270static 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
 278static 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
 293static void __exit konepure_exit(void)
 294{
 295        hid_unregister_driver(&konepure_driver);
 296        class_destroy(konepure_class);
 297}
 298
 299module_init(konepure_init);
 300module_exit(konepure_exit);
 301
 302MODULE_AUTHOR("Stefan Achatz");
 303MODULE_DESCRIPTION("USB Roccat KonePure driver");
 304MODULE_LICENSE("GPL v2");
 305
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