linux/drivers/hid/hid-roccat-konepure.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Roccat KonePure driver for Linux
   4 *
   5 * Copyright (c) 2012 Stefan Achatz <erazor_de@users.sourceforge.net>
   6 */
   7
   8/*
   9 */
  10
  11/*
  12 * Roccat KonePure is a smaller version of KoneXTD with less buttons and lights.
  13 */
  14
  15#include <linux/types.h>
  16#include <linux/device.h>
  17#include <linux/input.h>
  18#include <linux/hid.h>
  19#include <linux/module.h>
  20#include <linux/slab.h>
  21#include <linux/hid-roccat.h>
  22#include "hid-ids.h"
  23#include "hid-roccat-common.h"
  24
  25enum {
  26        KONEPURE_MOUSE_REPORT_NUMBER_BUTTON = 3,
  27};
  28
  29struct konepure_mouse_report_button {
  30        uint8_t report_number; /* always KONEPURE_MOUSE_REPORT_NUMBER_BUTTON */
  31        uint8_t zero;
  32        uint8_t type;
  33        uint8_t data1;
  34        uint8_t data2;
  35        uint8_t zero2;
  36        uint8_t unknown[2];
  37} __packed;
  38
  39static struct class *konepure_class;
  40
  41ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x04, 0x03);
  42ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(actual_profile, 0x05, 0x03);
  43ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile_settings, 0x06, 0x1f);
  44ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile_buttons, 0x07, 0x3b);
  45ROCCAT_COMMON2_BIN_ATTRIBUTE_W(macro, 0x08, 0x0822);
  46ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(info, 0x09, 0x06);
  47ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(tcu, 0x0c, 0x04);
  48ROCCAT_COMMON2_BIN_ATTRIBUTE_R(tcu_image, 0x0c, 0x0404);
  49ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(sensor, 0x0f, 0x06);
  50ROCCAT_COMMON2_BIN_ATTRIBUTE_W(talk, 0x10, 0x10);
  51
  52static struct bin_attribute *konepure_bin_attrs[] = {
  53        &bin_attr_actual_profile,
  54        &bin_attr_control,
  55        &bin_attr_info,
  56        &bin_attr_talk,
  57        &bin_attr_macro,
  58        &bin_attr_sensor,
  59        &bin_attr_tcu,
  60        &bin_attr_tcu_image,
  61        &bin_attr_profile_settings,
  62        &bin_attr_profile_buttons,
  63        NULL,
  64};
  65
  66static const struct attribute_group konepure_group = {
  67        .bin_attrs = konepure_bin_attrs,
  68};
  69
  70static const struct attribute_group *konepure_groups[] = {
  71        &konepure_group,
  72        NULL,
  73};
  74
  75static int konepure_init_specials(struct hid_device *hdev)
  76{
  77        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
  78        struct usb_device *usb_dev = interface_to_usbdev(intf);
  79        struct roccat_common2_device *konepure;
  80        int retval;
  81
  82        if (intf->cur_altsetting->desc.bInterfaceProtocol
  83                        != USB_INTERFACE_PROTOCOL_MOUSE) {
  84                hid_set_drvdata(hdev, NULL);
  85                return 0;
  86        }
  87
  88        konepure = kzalloc(sizeof(*konepure), GFP_KERNEL);
  89        if (!konepure) {
  90                hid_err(hdev, "can't alloc device descriptor\n");
  91                return -ENOMEM;
  92        }
  93        hid_set_drvdata(hdev, konepure);
  94
  95        retval = roccat_common2_device_init_struct(usb_dev, konepure);
  96        if (retval) {
  97                hid_err(hdev, "couldn't init KonePure device\n");
  98                goto exit_free;
  99        }
 100
 101        retval = roccat_connect(konepure_class, hdev,
 102                        sizeof(struct konepure_mouse_report_button));
 103        if (retval < 0) {
 104                hid_err(hdev, "couldn't init char dev\n");
 105        } else {
 106                konepure->chrdev_minor = retval;
 107                konepure->roccat_claimed = 1;
 108        }
 109
 110        return 0;
 111exit_free:
 112        kfree(konepure);
 113        return retval;
 114}
 115
 116static void konepure_remove_specials(struct hid_device *hdev)
 117{
 118        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 119        struct roccat_common2_device *konepure;
 120
 121        if (intf->cur_altsetting->desc.bInterfaceProtocol
 122                        != USB_INTERFACE_PROTOCOL_MOUSE)
 123                return;
 124
 125        konepure = hid_get_drvdata(hdev);
 126        if (konepure->roccat_claimed)
 127                roccat_disconnect(konepure->chrdev_minor);
 128        kfree(konepure);
 129}
 130
 131static int konepure_probe(struct hid_device *hdev,
 132                const struct hid_device_id *id)
 133{
 134        int retval;
 135
 136        retval = hid_parse(hdev);
 137        if (retval) {
 138                hid_err(hdev, "parse failed\n");
 139                goto exit;
 140        }
 141
 142        retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 143        if (retval) {
 144                hid_err(hdev, "hw start failed\n");
 145                goto exit;
 146        }
 147
 148        retval = konepure_init_specials(hdev);
 149        if (retval) {
 150                hid_err(hdev, "couldn't install mouse\n");
 151                goto exit_stop;
 152        }
 153
 154        return 0;
 155
 156exit_stop:
 157        hid_hw_stop(hdev);
 158exit:
 159        return retval;
 160}
 161
 162static void konepure_remove(struct hid_device *hdev)
 163{
 164        konepure_remove_specials(hdev);
 165        hid_hw_stop(hdev);
 166}
 167
 168static int konepure_raw_event(struct hid_device *hdev,
 169                struct hid_report *report, u8 *data, int size)
 170{
 171        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 172        struct roccat_common2_device *konepure = hid_get_drvdata(hdev);
 173
 174        if (intf->cur_altsetting->desc.bInterfaceProtocol
 175                        != USB_INTERFACE_PROTOCOL_MOUSE)
 176                return 0;
 177
 178        if (data[0] != KONEPURE_MOUSE_REPORT_NUMBER_BUTTON)
 179                return 0;
 180
 181        if (konepure != NULL && konepure->roccat_claimed)
 182                roccat_report_event(konepure->chrdev_minor, data);
 183
 184        return 0;
 185}
 186
 187static const struct hid_device_id konepure_devices[] = {
 188        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
 189        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
 190        { }
 191};
 192
 193MODULE_DEVICE_TABLE(hid, konepure_devices);
 194
 195static struct hid_driver konepure_driver = {
 196                .name = "konepure",
 197                .id_table = konepure_devices,
 198                .probe = konepure_probe,
 199                .remove = konepure_remove,
 200                .raw_event = konepure_raw_event
 201};
 202
 203static int __init konepure_init(void)
 204{
 205        int retval;
 206
 207        konepure_class = class_create(THIS_MODULE, "konepure");
 208        if (IS_ERR(konepure_class))
 209                return PTR_ERR(konepure_class);
 210        konepure_class->dev_groups = konepure_groups;
 211
 212        retval = hid_register_driver(&konepure_driver);
 213        if (retval)
 214                class_destroy(konepure_class);
 215        return retval;
 216}
 217
 218static void __exit konepure_exit(void)
 219{
 220        hid_unregister_driver(&konepure_driver);
 221        class_destroy(konepure_class);
 222}
 223
 224module_init(konepure_init);
 225module_exit(konepure_exit);
 226
 227MODULE_AUTHOR("Stefan Achatz");
 228MODULE_DESCRIPTION("USB Roccat KonePure/Optical driver");
 229MODULE_LICENSE("GPL v2");
 230