Merge remote-tracking branch 'lsk/v3.10/topic/arm64-misc' into linux-linaro-lsk
[firefly-linux-kernel-4.4.55.git] / 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         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
266         { }
267 };
268
269 MODULE_DEVICE_TABLE(hid, konepure_devices);
270
271 static struct hid_driver konepure_driver = {
272                 .name = "konepure",
273                 .id_table = konepure_devices,
274                 .probe = konepure_probe,
275                 .remove = konepure_remove,
276                 .raw_event = konepure_raw_event
277 };
278
279 static int __init konepure_init(void)
280 {
281         int retval;
282
283         konepure_class = class_create(THIS_MODULE, "konepure");
284         if (IS_ERR(konepure_class))
285                 return PTR_ERR(konepure_class);
286         konepure_class->dev_bin_attrs = konepure_bin_attributes;
287
288         retval = hid_register_driver(&konepure_driver);
289         if (retval)
290                 class_destroy(konepure_class);
291         return retval;
292 }
293
294 static void __exit konepure_exit(void)
295 {
296         hid_unregister_driver(&konepure_driver);
297         class_destroy(konepure_class);
298 }
299
300 module_init(konepure_init);
301 module_exit(konepure_exit);
302
303 MODULE_AUTHOR("Stefan Achatz");
304 MODULE_DESCRIPTION("USB Roccat KonePure/Optical driver");
305 MODULE_LICENSE("GPL v2");