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 
25 enum {
26 	KONEPURE_MOUSE_REPORT_NUMBER_BUTTON = 3,
27 };
28 
29 struct 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 
39 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x04, 0x03);
40 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(actual_profile, 0x05, 0x03);
41 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile_settings, 0x06, 0x1f);
42 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile_buttons, 0x07, 0x3b);
43 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(macro, 0x08, 0x0822);
44 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(info, 0x09, 0x06);
45 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(tcu, 0x0c, 0x04);
46 ROCCAT_COMMON2_BIN_ATTRIBUTE_R(tcu_image, 0x0c, 0x0404);
47 ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(sensor, 0x0f, 0x06);
48 ROCCAT_COMMON2_BIN_ATTRIBUTE_W(talk, 0x10, 0x10);
49 
50 static struct bin_attribute *konepure_bin_attrs[] = {
51 	&bin_attr_actual_profile,
52 	&bin_attr_control,
53 	&bin_attr_info,
54 	&bin_attr_talk,
55 	&bin_attr_macro,
56 	&bin_attr_sensor,
57 	&bin_attr_tcu,
58 	&bin_attr_tcu_image,
59 	&bin_attr_profile_settings,
60 	&bin_attr_profile_buttons,
61 	NULL,
62 };
63 
64 static const struct attribute_group konepure_group = {
65 	.bin_attrs = konepure_bin_attrs,
66 };
67 
68 static const struct attribute_group *konepure_groups[] = {
69 	&konepure_group,
70 	NULL,
71 };
72 
73 static const struct class konepure_class = {
74 	.name = "konepure",
75 	.dev_groups = konepure_groups,
76 };
77 
konepure_init_specials(struct hid_device * hdev)78 static int konepure_init_specials(struct hid_device *hdev)
79 {
80 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
81 	struct usb_device *usb_dev = interface_to_usbdev(intf);
82 	struct roccat_common2_device *konepure;
83 	int retval;
84 
85 	if (intf->cur_altsetting->desc.bInterfaceProtocol
86 			!= USB_INTERFACE_PROTOCOL_MOUSE) {
87 		hid_set_drvdata(hdev, NULL);
88 		return 0;
89 	}
90 
91 	konepure = kzalloc(sizeof(*konepure), GFP_KERNEL);
92 	if (!konepure) {
93 		hid_err(hdev, "can't alloc device descriptor\n");
94 		return -ENOMEM;
95 	}
96 	hid_set_drvdata(hdev, konepure);
97 
98 	retval = roccat_common2_device_init_struct(usb_dev, konepure);
99 	if (retval) {
100 		hid_err(hdev, "couldn't init KonePure device\n");
101 		goto exit_free;
102 	}
103 
104 	retval = roccat_connect(&konepure_class, hdev,
105 				sizeof(struct konepure_mouse_report_button));
106 	if (retval < 0) {
107 		hid_err(hdev, "couldn't init char dev\n");
108 	} else {
109 		konepure->chrdev_minor = retval;
110 		konepure->roccat_claimed = 1;
111 	}
112 
113 	return 0;
114 exit_free:
115 	kfree(konepure);
116 	return retval;
117 }
118 
konepure_remove_specials(struct hid_device * hdev)119 static void konepure_remove_specials(struct hid_device *hdev)
120 {
121 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
122 	struct roccat_common2_device *konepure;
123 
124 	if (intf->cur_altsetting->desc.bInterfaceProtocol
125 			!= USB_INTERFACE_PROTOCOL_MOUSE)
126 		return;
127 
128 	konepure = hid_get_drvdata(hdev);
129 	if (konepure->roccat_claimed)
130 		roccat_disconnect(konepure->chrdev_minor);
131 	kfree(konepure);
132 }
133 
konepure_probe(struct hid_device * hdev,const struct hid_device_id * id)134 static int konepure_probe(struct hid_device *hdev,
135 		const struct hid_device_id *id)
136 {
137 	int retval;
138 
139 	if (!hid_is_usb(hdev))
140 		return -EINVAL;
141 
142 	retval = hid_parse(hdev);
143 	if (retval) {
144 		hid_err(hdev, "parse failed\n");
145 		goto exit;
146 	}
147 
148 	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
149 	if (retval) {
150 		hid_err(hdev, "hw start failed\n");
151 		goto exit;
152 	}
153 
154 	retval = konepure_init_specials(hdev);
155 	if (retval) {
156 		hid_err(hdev, "couldn't install mouse\n");
157 		goto exit_stop;
158 	}
159 
160 	return 0;
161 
162 exit_stop:
163 	hid_hw_stop(hdev);
164 exit:
165 	return retval;
166 }
167 
konepure_remove(struct hid_device * hdev)168 static void konepure_remove(struct hid_device *hdev)
169 {
170 	konepure_remove_specials(hdev);
171 	hid_hw_stop(hdev);
172 }
173 
konepure_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)174 static int konepure_raw_event(struct hid_device *hdev,
175 		struct hid_report *report, u8 *data, int size)
176 {
177 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
178 	struct roccat_common2_device *konepure = hid_get_drvdata(hdev);
179 
180 	if (intf->cur_altsetting->desc.bInterfaceProtocol
181 			!= USB_INTERFACE_PROTOCOL_MOUSE)
182 		return 0;
183 
184 	if (data[0] != KONEPURE_MOUSE_REPORT_NUMBER_BUTTON)
185 		return 0;
186 
187 	if (konepure != NULL && konepure->roccat_claimed)
188 		roccat_report_event(konepure->chrdev_minor, data);
189 
190 	return 0;
191 }
192 
193 static const struct hid_device_id konepure_devices[] = {
194 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
195 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
196 	{ }
197 };
198 
199 MODULE_DEVICE_TABLE(hid, konepure_devices);
200 
201 static struct hid_driver konepure_driver = {
202 		.name = "konepure",
203 		.id_table = konepure_devices,
204 		.probe = konepure_probe,
205 		.remove = konepure_remove,
206 		.raw_event = konepure_raw_event
207 };
208 
konepure_init(void)209 static int __init konepure_init(void)
210 {
211 	int retval;
212 
213 	retval = class_register(&konepure_class);
214 	if (retval)
215 		return retval;
216 
217 	retval = hid_register_driver(&konepure_driver);
218 	if (retval)
219 		class_unregister(&konepure_class);
220 	return retval;
221 }
222 
konepure_exit(void)223 static void __exit konepure_exit(void)
224 {
225 	hid_unregister_driver(&konepure_driver);
226 	class_unregister(&konepure_class);
227 }
228 
229 module_init(konepure_init);
230 module_exit(konepure_exit);
231 
232 MODULE_AUTHOR("Stefan Achatz");
233 MODULE_DESCRIPTION("USB Roccat KonePure/Optical driver");
234 MODULE_LICENSE("GPL v2");
235