1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  *  HID driver for UC-Logic devices not fully compliant with HID standard
4  *  - original and fixed report descriptors
5  *
6  *  Copyright (c) 2010-2017 Nikolai Kondrashov
7  *  Copyright (c) 2013 Martin Rusko
8  */
9 
10 /*
11  * This program is free software; you can redistribute it and/or modify it
12  * under the terms of the GNU General Public License as published by the Free
13  * Software Foundation; either version 2 of the License, or (at your option)
14  * any later version.
15  */
16 
17 #include "hid-uclogic-rdesc.h"
18 #include <linux/slab.h>
19 #include <asm/unaligned.h>
20 
21 /* Fixed WP4030U report descriptor */
22 __u8 uclogic_rdesc_wp4030u_fixed_arr[] = {
23 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
24 	0x09, 0x01,         /*  Usage (Digitizer),                  */
25 	0xA1, 0x01,         /*  Collection (Application),           */
26 	0x85, 0x09,         /*      Report ID (9),                  */
27 	0x09, 0x20,         /*      Usage (Stylus),                 */
28 	0xA0,               /*      Collection (Physical),          */
29 	0x75, 0x01,         /*          Report Size (1),            */
30 	0x09, 0x42,         /*          Usage (Tip Switch),         */
31 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
32 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
33 	0x14,               /*          Logical Minimum (0),        */
34 	0x25, 0x01,         /*          Logical Maximum (1),        */
35 	0x95, 0x03,         /*          Report Count (3),           */
36 	0x81, 0x02,         /*          Input (Variable),           */
37 	0x95, 0x05,         /*          Report Count (5),           */
38 	0x81, 0x01,         /*          Input (Constant),           */
39 	0x75, 0x10,         /*          Report Size (16),           */
40 	0x95, 0x01,         /*          Report Count (1),           */
41 	0x14,               /*          Logical Minimum (0),        */
42 	0xA4,               /*          Push,                       */
43 	0x05, 0x01,         /*          Usage Page (Desktop),       */
44 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
45 	0x65, 0x13,         /*          Unit (Inch),                */
46 	0x34,               /*          Physical Minimum (0),       */
47 	0x09, 0x30,         /*          Usage (X),                  */
48 	0x46, 0xA0, 0x0F,   /*          Physical Maximum (4000),    */
49 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
50 	0x81, 0x02,         /*          Input (Variable),           */
51 	0x09, 0x31,         /*          Usage (Y),                  */
52 	0x46, 0xB8, 0x0B,   /*          Physical Maximum (3000),    */
53 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
54 	0x81, 0x02,         /*          Input (Variable),           */
55 	0xB4,               /*          Pop,                        */
56 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
57 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
58 	0x81, 0x02,         /*          Input (Variable),           */
59 	0xC0,               /*      End Collection,                 */
60 	0xC0                /*  End Collection                      */
61 };
62 
63 const size_t uclogic_rdesc_wp4030u_fixed_size =
64 			sizeof(uclogic_rdesc_wp4030u_fixed_arr);
65 
66 /* Fixed WP5540U report descriptor */
67 __u8 uclogic_rdesc_wp5540u_fixed_arr[] = {
68 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
69 	0x09, 0x01,         /*  Usage (Digitizer),                  */
70 	0xA1, 0x01,         /*  Collection (Application),           */
71 	0x85, 0x09,         /*      Report ID (9),                  */
72 	0x09, 0x20,         /*      Usage (Stylus),                 */
73 	0xA0,               /*      Collection (Physical),          */
74 	0x75, 0x01,         /*          Report Size (1),            */
75 	0x09, 0x42,         /*          Usage (Tip Switch),         */
76 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
77 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
78 	0x14,               /*          Logical Minimum (0),        */
79 	0x25, 0x01,         /*          Logical Maximum (1),        */
80 	0x95, 0x03,         /*          Report Count (3),           */
81 	0x81, 0x02,         /*          Input (Variable),           */
82 	0x95, 0x05,         /*          Report Count (5),           */
83 	0x81, 0x01,         /*          Input (Constant),           */
84 	0x75, 0x10,         /*          Report Size (16),           */
85 	0x95, 0x01,         /*          Report Count (1),           */
86 	0x14,               /*          Logical Minimum (0),        */
87 	0xA4,               /*          Push,                       */
88 	0x05, 0x01,         /*          Usage Page (Desktop),       */
89 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
90 	0x65, 0x13,         /*          Unit (Inch),                */
91 	0x34,               /*          Physical Minimum (0),       */
92 	0x09, 0x30,         /*          Usage (X),                  */
93 	0x46, 0x7C, 0x15,   /*          Physical Maximum (5500),    */
94 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
95 	0x81, 0x02,         /*          Input (Variable),           */
96 	0x09, 0x31,         /*          Usage (Y),                  */
97 	0x46, 0xA0, 0x0F,   /*          Physical Maximum (4000),    */
98 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
99 	0x81, 0x02,         /*          Input (Variable),           */
100 	0xB4,               /*          Pop,                        */
101 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
102 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
103 	0x81, 0x02,         /*          Input (Variable),           */
104 	0xC0,               /*      End Collection,                 */
105 	0xC0,               /*  End Collection,                     */
106 	0x05, 0x01,         /*  Usage Page (Desktop),               */
107 	0x09, 0x02,         /*  Usage (Mouse),                      */
108 	0xA1, 0x01,         /*  Collection (Application),           */
109 	0x85, 0x08,         /*      Report ID (8),                  */
110 	0x09, 0x01,         /*      Usage (Pointer),                */
111 	0xA0,               /*      Collection (Physical),          */
112 	0x75, 0x01,         /*          Report Size (1),            */
113 	0x05, 0x09,         /*          Usage Page (Button),        */
114 	0x19, 0x01,         /*          Usage Minimum (01h),        */
115 	0x29, 0x03,         /*          Usage Maximum (03h),        */
116 	0x14,               /*          Logical Minimum (0),        */
117 	0x25, 0x01,         /*          Logical Maximum (1),        */
118 	0x95, 0x03,         /*          Report Count (3),           */
119 	0x81, 0x02,         /*          Input (Variable),           */
120 	0x95, 0x05,         /*          Report Count (5),           */
121 	0x81, 0x01,         /*          Input (Constant),           */
122 	0x05, 0x01,         /*          Usage Page (Desktop),       */
123 	0x75, 0x08,         /*          Report Size (8),            */
124 	0x09, 0x30,         /*          Usage (X),                  */
125 	0x09, 0x31,         /*          Usage (Y),                  */
126 	0x15, 0x81,         /*          Logical Minimum (-127),     */
127 	0x25, 0x7F,         /*          Logical Maximum (127),      */
128 	0x95, 0x02,         /*          Report Count (2),           */
129 	0x81, 0x06,         /*          Input (Variable, Relative), */
130 	0x09, 0x38,         /*          Usage (Wheel),              */
131 	0x15, 0xFF,         /*          Logical Minimum (-1),       */
132 	0x25, 0x01,         /*          Logical Maximum (1),        */
133 	0x95, 0x01,         /*          Report Count (1),           */
134 	0x81, 0x06,         /*          Input (Variable, Relative), */
135 	0x81, 0x01,         /*          Input (Constant),           */
136 	0xC0,               /*      End Collection,                 */
137 	0xC0                /*  End Collection                      */
138 };
139 
140 const size_t uclogic_rdesc_wp5540u_fixed_size =
141 			sizeof(uclogic_rdesc_wp5540u_fixed_arr);
142 
143 /* Fixed WP8060U report descriptor */
144 __u8 uclogic_rdesc_wp8060u_fixed_arr[] = {
145 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
146 	0x09, 0x01,         /*  Usage (Digitizer),                  */
147 	0xA1, 0x01,         /*  Collection (Application),           */
148 	0x85, 0x09,         /*      Report ID (9),                  */
149 	0x09, 0x20,         /*      Usage (Stylus),                 */
150 	0xA0,               /*      Collection (Physical),          */
151 	0x75, 0x01,         /*          Report Size (1),            */
152 	0x09, 0x42,         /*          Usage (Tip Switch),         */
153 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
154 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
155 	0x14,               /*          Logical Minimum (0),        */
156 	0x25, 0x01,         /*          Logical Maximum (1),        */
157 	0x95, 0x03,         /*          Report Count (3),           */
158 	0x81, 0x02,         /*          Input (Variable),           */
159 	0x95, 0x05,         /*          Report Count (5),           */
160 	0x81, 0x01,         /*          Input (Constant),           */
161 	0x75, 0x10,         /*          Report Size (16),           */
162 	0x95, 0x01,         /*          Report Count (1),           */
163 	0x14,               /*          Logical Minimum (0),        */
164 	0xA4,               /*          Push,                       */
165 	0x05, 0x01,         /*          Usage Page (Desktop),       */
166 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
167 	0x65, 0x13,         /*          Unit (Inch),                */
168 	0x34,               /*          Physical Minimum (0),       */
169 	0x09, 0x30,         /*          Usage (X),                  */
170 	0x46, 0x40, 0x1F,   /*          Physical Maximum (8000),    */
171 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
172 	0x81, 0x02,         /*          Input (Variable),           */
173 	0x09, 0x31,         /*          Usage (Y),                  */
174 	0x46, 0x70, 0x17,   /*          Physical Maximum (6000),    */
175 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
176 	0x81, 0x02,         /*          Input (Variable),           */
177 	0xB4,               /*          Pop,                        */
178 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
179 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
180 	0x81, 0x02,         /*          Input (Variable),           */
181 	0xC0,               /*      End Collection,                 */
182 	0xC0,               /*  End Collection,                     */
183 	0x05, 0x01,         /*  Usage Page (Desktop),               */
184 	0x09, 0x02,         /*  Usage (Mouse),                      */
185 	0xA1, 0x01,         /*  Collection (Application),           */
186 	0x85, 0x08,         /*      Report ID (8),                  */
187 	0x09, 0x01,         /*      Usage (Pointer),                */
188 	0xA0,               /*      Collection (Physical),          */
189 	0x75, 0x01,         /*          Report Size (1),            */
190 	0x05, 0x09,         /*          Usage Page (Button),        */
191 	0x19, 0x01,         /*          Usage Minimum (01h),        */
192 	0x29, 0x03,         /*          Usage Maximum (03h),        */
193 	0x14,               /*          Logical Minimum (0),        */
194 	0x25, 0x01,         /*          Logical Maximum (1),        */
195 	0x95, 0x03,         /*          Report Count (3),           */
196 	0x81, 0x02,         /*          Input (Variable),           */
197 	0x95, 0x05,         /*          Report Count (5),           */
198 	0x81, 0x01,         /*          Input (Constant),           */
199 	0x05, 0x01,         /*          Usage Page (Desktop),       */
200 	0x75, 0x08,         /*          Report Size (8),            */
201 	0x09, 0x30,         /*          Usage (X),                  */
202 	0x09, 0x31,         /*          Usage (Y),                  */
203 	0x15, 0x81,         /*          Logical Minimum (-127),     */
204 	0x25, 0x7F,         /*          Logical Maximum (127),      */
205 	0x95, 0x02,         /*          Report Count (2),           */
206 	0x81, 0x06,         /*          Input (Variable, Relative), */
207 	0x09, 0x38,         /*          Usage (Wheel),              */
208 	0x15, 0xFF,         /*          Logical Minimum (-1),       */
209 	0x25, 0x01,         /*          Logical Maximum (1),        */
210 	0x95, 0x01,         /*          Report Count (1),           */
211 	0x81, 0x06,         /*          Input (Variable, Relative), */
212 	0x81, 0x01,         /*          Input (Constant),           */
213 	0xC0,               /*      End Collection,                 */
214 	0xC0                /*  End Collection                      */
215 };
216 
217 const size_t uclogic_rdesc_wp8060u_fixed_size =
218 			sizeof(uclogic_rdesc_wp8060u_fixed_arr);
219 
220 /* Fixed WP1062 report descriptor */
221 __u8 uclogic_rdesc_wp1062_fixed_arr[] = {
222 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
223 	0x09, 0x01,         /*  Usage (Digitizer),                  */
224 	0xA1, 0x01,         /*  Collection (Application),           */
225 	0x85, 0x09,         /*      Report ID (9),                  */
226 	0x09, 0x20,         /*      Usage (Stylus),                 */
227 	0xA0,               /*      Collection (Physical),          */
228 	0x75, 0x01,         /*          Report Size (1),            */
229 	0x09, 0x42,         /*          Usage (Tip Switch),         */
230 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
231 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
232 	0x14,               /*          Logical Minimum (0),        */
233 	0x25, 0x01,         /*          Logical Maximum (1),        */
234 	0x95, 0x03,         /*          Report Count (3),           */
235 	0x81, 0x02,         /*          Input (Variable),           */
236 	0x95, 0x04,         /*          Report Count (4),           */
237 	0x81, 0x01,         /*          Input (Constant),           */
238 	0x09, 0x32,         /*          Usage (In Range),           */
239 	0x95, 0x01,         /*          Report Count (1),           */
240 	0x81, 0x02,         /*          Input (Variable),           */
241 	0x75, 0x10,         /*          Report Size (16),           */
242 	0x95, 0x01,         /*          Report Count (1),           */
243 	0x14,               /*          Logical Minimum (0),        */
244 	0xA4,               /*          Push,                       */
245 	0x05, 0x01,         /*          Usage Page (Desktop),       */
246 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
247 	0x65, 0x13,         /*          Unit (Inch),                */
248 	0x34,               /*          Physical Minimum (0),       */
249 	0x09, 0x30,         /*          Usage (X),                  */
250 	0x46, 0x10, 0x27,   /*          Physical Maximum (10000),   */
251 	0x26, 0x20, 0x4E,   /*          Logical Maximum (20000),    */
252 	0x81, 0x02,         /*          Input (Variable),           */
253 	0x09, 0x31,         /*          Usage (Y),                  */
254 	0x46, 0xB7, 0x19,   /*          Physical Maximum (6583),    */
255 	0x26, 0x6E, 0x33,   /*          Logical Maximum (13166),    */
256 	0x81, 0x02,         /*          Input (Variable),           */
257 	0xB4,               /*          Pop,                        */
258 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
259 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
260 	0x81, 0x02,         /*          Input (Variable),           */
261 	0xC0,               /*      End Collection,                 */
262 	0xC0                /*  End Collection                      */
263 };
264 
265 const size_t uclogic_rdesc_wp1062_fixed_size =
266 			sizeof(uclogic_rdesc_wp1062_fixed_arr);
267 
268 /* Fixed PF1209 report descriptor */
269 __u8 uclogic_rdesc_pf1209_fixed_arr[] = {
270 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
271 	0x09, 0x01,         /*  Usage (Digitizer),                  */
272 	0xA1, 0x01,         /*  Collection (Application),           */
273 	0x85, 0x09,         /*      Report ID (9),                  */
274 	0x09, 0x20,         /*      Usage (Stylus),                 */
275 	0xA0,               /*      Collection (Physical),          */
276 	0x75, 0x01,         /*          Report Size (1),            */
277 	0x09, 0x42,         /*          Usage (Tip Switch),         */
278 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
279 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
280 	0x14,               /*          Logical Minimum (0),        */
281 	0x25, 0x01,         /*          Logical Maximum (1),        */
282 	0x95, 0x03,         /*          Report Count (3),           */
283 	0x81, 0x02,         /*          Input (Variable),           */
284 	0x95, 0x05,         /*          Report Count (5),           */
285 	0x81, 0x01,         /*          Input (Constant),           */
286 	0x75, 0x10,         /*          Report Size (16),           */
287 	0x95, 0x01,         /*          Report Count (1),           */
288 	0x14,               /*          Logical Minimum (0),        */
289 	0xA4,               /*          Push,                       */
290 	0x05, 0x01,         /*          Usage Page (Desktop),       */
291 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
292 	0x65, 0x13,         /*          Unit (Inch),                */
293 	0x34,               /*          Physical Minimum (0),       */
294 	0x09, 0x30,         /*          Usage (X),                  */
295 	0x46, 0xE0, 0x2E,   /*          Physical Maximum (12000),   */
296 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
297 	0x81, 0x02,         /*          Input (Variable),           */
298 	0x09, 0x31,         /*          Usage (Y),                  */
299 	0x46, 0x28, 0x23,   /*          Physical Maximum (9000),    */
300 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
301 	0x81, 0x02,         /*          Input (Variable),           */
302 	0xB4,               /*          Pop,                        */
303 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
304 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
305 	0x81, 0x02,         /*          Input (Variable),           */
306 	0xC0,               /*      End Collection,                 */
307 	0xC0,               /*  End Collection,                     */
308 	0x05, 0x01,         /*  Usage Page (Desktop),               */
309 	0x09, 0x02,         /*  Usage (Mouse),                      */
310 	0xA1, 0x01,         /*  Collection (Application),           */
311 	0x85, 0x08,         /*      Report ID (8),                  */
312 	0x09, 0x01,         /*      Usage (Pointer),                */
313 	0xA0,               /*      Collection (Physical),          */
314 	0x75, 0x01,         /*          Report Size (1),            */
315 	0x05, 0x09,         /*          Usage Page (Button),        */
316 	0x19, 0x01,         /*          Usage Minimum (01h),        */
317 	0x29, 0x03,         /*          Usage Maximum (03h),        */
318 	0x14,               /*          Logical Minimum (0),        */
319 	0x25, 0x01,         /*          Logical Maximum (1),        */
320 	0x95, 0x03,         /*          Report Count (3),           */
321 	0x81, 0x02,         /*          Input (Variable),           */
322 	0x95, 0x05,         /*          Report Count (5),           */
323 	0x81, 0x01,         /*          Input (Constant),           */
324 	0x05, 0x01,         /*          Usage Page (Desktop),       */
325 	0x75, 0x08,         /*          Report Size (8),            */
326 	0x09, 0x30,         /*          Usage (X),                  */
327 	0x09, 0x31,         /*          Usage (Y),                  */
328 	0x15, 0x81,         /*          Logical Minimum (-127),     */
329 	0x25, 0x7F,         /*          Logical Maximum (127),      */
330 	0x95, 0x02,         /*          Report Count (2),           */
331 	0x81, 0x06,         /*          Input (Variable, Relative), */
332 	0x09, 0x38,         /*          Usage (Wheel),              */
333 	0x15, 0xFF,         /*          Logical Minimum (-1),       */
334 	0x25, 0x01,         /*          Logical Maximum (1),        */
335 	0x95, 0x01,         /*          Report Count (1),           */
336 	0x81, 0x06,         /*          Input (Variable, Relative), */
337 	0x81, 0x01,         /*          Input (Constant),           */
338 	0xC0,               /*      End Collection,                 */
339 	0xC0                /*  End Collection                      */
340 };
341 
342 const size_t uclogic_rdesc_pf1209_fixed_size =
343 			sizeof(uclogic_rdesc_pf1209_fixed_arr);
344 
345 /* Fixed PID 0522 tablet report descriptor, interface 0 (stylus) */
346 __u8 uclogic_rdesc_twhl850_fixed0_arr[] = {
347 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
348 	0x09, 0x01,         /*  Usage (Digitizer),                  */
349 	0xA1, 0x01,         /*  Collection (Application),           */
350 	0x85, 0x09,         /*      Report ID (9),                  */
351 	0x09, 0x20,         /*      Usage (Stylus),                 */
352 	0xA0,               /*      Collection (Physical),          */
353 	0x14,               /*          Logical Minimum (0),        */
354 	0x25, 0x01,         /*          Logical Maximum (1),        */
355 	0x75, 0x01,         /*          Report Size (1),            */
356 	0x95, 0x03,         /*          Report Count (3),           */
357 	0x09, 0x42,         /*          Usage (Tip Switch),         */
358 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
359 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
360 	0x81, 0x02,         /*          Input (Variable),           */
361 	0x81, 0x03,         /*          Input (Constant, Variable), */
362 	0x95, 0x01,         /*          Report Count (1),           */
363 	0x09, 0x32,         /*          Usage (In Range),           */
364 	0x81, 0x02,         /*          Input (Variable),           */
365 	0x81, 0x03,         /*          Input (Constant, Variable), */
366 	0x75, 0x10,         /*          Report Size (16),           */
367 	0xA4,               /*          Push,                       */
368 	0x05, 0x01,         /*          Usage Page (Desktop),       */
369 	0x65, 0x13,         /*          Unit (Inch),                */
370 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
371 	0x34,               /*          Physical Minimum (0),       */
372 	0x09, 0x30,         /*          Usage (X),                  */
373 	0x46, 0x40, 0x1F,   /*          Physical Maximum (8000),    */
374 	0x26, 0x00, 0x7D,   /*          Logical Maximum (32000),    */
375 	0x81, 0x02,         /*          Input (Variable),           */
376 	0x09, 0x31,         /*          Usage (Y),                  */
377 	0x46, 0x88, 0x13,   /*          Physical Maximum (5000),    */
378 	0x26, 0x20, 0x4E,   /*          Logical Maximum (20000),    */
379 	0x81, 0x02,         /*          Input (Variable),           */
380 	0xB4,               /*          Pop,                        */
381 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
382 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
383 	0x81, 0x02,         /*          Input (Variable),           */
384 	0xC0,               /*      End Collection,                 */
385 	0xC0                /*  End Collection                      */
386 };
387 
388 const size_t uclogic_rdesc_twhl850_fixed0_size =
389 			sizeof(uclogic_rdesc_twhl850_fixed0_arr);
390 
391 /* Fixed PID 0522 tablet report descriptor, interface 1 (mouse) */
392 __u8 uclogic_rdesc_twhl850_fixed1_arr[] = {
393 	0x05, 0x01,         /*  Usage Page (Desktop),               */
394 	0x09, 0x02,         /*  Usage (Mouse),                      */
395 	0xA1, 0x01,         /*  Collection (Application),           */
396 	0x85, 0x01,         /*      Report ID (1),                  */
397 	0x09, 0x01,         /*      Usage (Pointer),                */
398 	0xA0,               /*      Collection (Physical),          */
399 	0x05, 0x09,         /*          Usage Page (Button),        */
400 	0x75, 0x01,         /*          Report Size (1),            */
401 	0x95, 0x03,         /*          Report Count (3),           */
402 	0x19, 0x01,         /*          Usage Minimum (01h),        */
403 	0x29, 0x03,         /*          Usage Maximum (03h),        */
404 	0x14,               /*          Logical Minimum (0),        */
405 	0x25, 0x01,         /*          Logical Maximum (1),        */
406 	0x81, 0x02,         /*          Input (Variable),           */
407 	0x95, 0x05,         /*          Report Count (5),           */
408 	0x81, 0x03,         /*          Input (Constant, Variable), */
409 	0x05, 0x01,         /*          Usage Page (Desktop),       */
410 	0x09, 0x30,         /*          Usage (X),                  */
411 	0x09, 0x31,         /*          Usage (Y),                  */
412 	0x16, 0x00, 0x80,   /*          Logical Minimum (-32768),   */
413 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),    */
414 	0x75, 0x10,         /*          Report Size (16),           */
415 	0x95, 0x02,         /*          Report Count (2),           */
416 	0x81, 0x06,         /*          Input (Variable, Relative), */
417 	0x09, 0x38,         /*          Usage (Wheel),              */
418 	0x15, 0xFF,         /*          Logical Minimum (-1),       */
419 	0x25, 0x01,         /*          Logical Maximum (1),        */
420 	0x95, 0x01,         /*          Report Count (1),           */
421 	0x75, 0x08,         /*          Report Size (8),            */
422 	0x81, 0x06,         /*          Input (Variable, Relative), */
423 	0x81, 0x03,         /*          Input (Constant, Variable), */
424 	0xC0,               /*      End Collection,                 */
425 	0xC0                /*  End Collection                      */
426 };
427 
428 const size_t uclogic_rdesc_twhl850_fixed1_size =
429 			sizeof(uclogic_rdesc_twhl850_fixed1_arr);
430 
431 /* Fixed PID 0522 tablet report descriptor, interface 2 (frame buttons) */
432 __u8 uclogic_rdesc_twhl850_fixed2_arr[] = {
433 	0x05, 0x01,         /*  Usage Page (Desktop),               */
434 	0x09, 0x06,         /*  Usage (Keyboard),                   */
435 	0xA1, 0x01,         /*  Collection (Application),           */
436 	0x85, 0x03,         /*      Report ID (3),                  */
437 	0x05, 0x07,         /*      Usage Page (Keyboard),          */
438 	0x14,               /*      Logical Minimum (0),            */
439 	0x19, 0xE0,         /*      Usage Minimum (KB Leftcontrol), */
440 	0x29, 0xE7,         /*      Usage Maximum (KB Right GUI),   */
441 	0x25, 0x01,         /*      Logical Maximum (1),            */
442 	0x75, 0x01,         /*      Report Size (1),                */
443 	0x95, 0x08,         /*      Report Count (8),               */
444 	0x81, 0x02,         /*      Input (Variable),               */
445 	0x18,               /*      Usage Minimum (None),           */
446 	0x29, 0xFF,         /*      Usage Maximum (FFh),            */
447 	0x26, 0xFF, 0x00,   /*      Logical Maximum (255),          */
448 	0x75, 0x08,         /*      Report Size (8),                */
449 	0x95, 0x06,         /*      Report Count (6),               */
450 	0x80,               /*      Input,                          */
451 	0xC0                /*  End Collection                      */
452 };
453 
454 const size_t uclogic_rdesc_twhl850_fixed2_size =
455 			sizeof(uclogic_rdesc_twhl850_fixed2_arr);
456 
457 /* Fixed TWHA60 report descriptor, interface 0 (stylus) */
458 __u8 uclogic_rdesc_twha60_fixed0_arr[] = {
459 	0x05, 0x0D,         /*  Usage Page (Digitizer),             */
460 	0x09, 0x01,         /*  Usage (Digitizer),                  */
461 	0xA1, 0x01,         /*  Collection (Application),           */
462 	0x85, 0x09,         /*      Report ID (9),                  */
463 	0x09, 0x20,         /*      Usage (Stylus),                 */
464 	0xA0,               /*      Collection (Physical),          */
465 	0x75, 0x01,         /*          Report Size (1),            */
466 	0x09, 0x42,         /*          Usage (Tip Switch),         */
467 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
468 	0x09, 0x46,         /*          Usage (Tablet Pick),        */
469 	0x14,               /*          Logical Minimum (0),        */
470 	0x25, 0x01,         /*          Logical Maximum (1),        */
471 	0x95, 0x03,         /*          Report Count (3),           */
472 	0x81, 0x02,         /*          Input (Variable),           */
473 	0x95, 0x04,         /*          Report Count (4),           */
474 	0x81, 0x01,         /*          Input (Constant),           */
475 	0x09, 0x32,         /*          Usage (In Range),           */
476 	0x95, 0x01,         /*          Report Count (1),           */
477 	0x81, 0x02,         /*          Input (Variable),           */
478 	0x75, 0x10,         /*          Report Size (16),           */
479 	0x95, 0x01,         /*          Report Count (1),           */
480 	0x14,               /*          Logical Minimum (0),        */
481 	0xA4,               /*          Push,                       */
482 	0x05, 0x01,         /*          Usage Page (Desktop),       */
483 	0x55, 0xFD,         /*          Unit Exponent (-3),         */
484 	0x65, 0x13,         /*          Unit (Inch),                */
485 	0x34,               /*          Physical Minimum (0),       */
486 	0x09, 0x30,         /*          Usage (X),                  */
487 	0x46, 0x10, 0x27,   /*          Physical Maximum (10000),   */
488 	0x27, 0x3F, 0x9C,
489 		0x00, 0x00, /*          Logical Maximum (39999),    */
490 	0x81, 0x02,         /*          Input (Variable),           */
491 	0x09, 0x31,         /*          Usage (Y),                  */
492 	0x46, 0x6A, 0x18,   /*          Physical Maximum (6250),    */
493 	0x26, 0xA7, 0x61,   /*          Logical Maximum (24999),    */
494 	0x81, 0x02,         /*          Input (Variable),           */
495 	0xB4,               /*          Pop,                        */
496 	0x09, 0x30,         /*          Usage (Tip Pressure),       */
497 	0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
498 	0x81, 0x02,         /*          Input (Variable),           */
499 	0xC0,               /*      End Collection,                 */
500 	0xC0                /*  End Collection                      */
501 };
502 
503 const size_t uclogic_rdesc_twha60_fixed0_size =
504 			sizeof(uclogic_rdesc_twha60_fixed0_arr);
505 
506 /* Fixed TWHA60 report descriptor, interface 1 (frame buttons) */
507 __u8 uclogic_rdesc_twha60_fixed1_arr[] = {
508 	0x05, 0x01, /*  Usage Page (Desktop),       */
509 	0x09, 0x06, /*  Usage (Keyboard),           */
510 	0xA1, 0x01, /*  Collection (Application),   */
511 	0x85, 0x05, /*      Report ID (5),          */
512 	0x05, 0x07, /*      Usage Page (Keyboard),  */
513 	0x14,       /*      Logical Minimum (0),    */
514 	0x25, 0x01, /*      Logical Maximum (1),    */
515 	0x75, 0x01, /*      Report Size (1),        */
516 	0x95, 0x08, /*      Report Count (8),       */
517 	0x81, 0x01, /*      Input (Constant),       */
518 	0x95, 0x0C, /*      Report Count (12),      */
519 	0x19, 0x3A, /*      Usage Minimum (KB F1),  */
520 	0x29, 0x45, /*      Usage Maximum (KB F12), */
521 	0x81, 0x02, /*      Input (Variable),       */
522 	0x95, 0x0C, /*      Report Count (12),      */
523 	0x19, 0x68, /*      Usage Minimum (KB F13), */
524 	0x29, 0x73, /*      Usage Maximum (KB F24), */
525 	0x81, 0x02, /*      Input (Variable),       */
526 	0x95, 0x08, /*      Report Count (8),       */
527 	0x81, 0x01, /*      Input (Constant),       */
528 	0xC0        /*  End Collection              */
529 };
530 
531 const size_t uclogic_rdesc_twha60_fixed1_size =
532 			sizeof(uclogic_rdesc_twha60_fixed1_arr);
533 
534 /* Fixed report descriptor template for (tweaked) v1 pen reports */
535 const __u8 uclogic_rdesc_v1_pen_template_arr[] = {
536 	0x05, 0x0D,             /*  Usage Page (Digitizer),                 */
537 	0x09, 0x01,             /*  Usage (Digitizer),                      */
538 	0xA1, 0x01,             /*  Collection (Application),               */
539 	0x85, 0x07,             /*      Report ID (7),                      */
540 	0x09, 0x20,             /*      Usage (Stylus),                     */
541 	0xA0,                   /*      Collection (Physical),              */
542 	0x14,                   /*          Logical Minimum (0),            */
543 	0x25, 0x01,             /*          Logical Maximum (1),            */
544 	0x75, 0x01,             /*          Report Size (1),                */
545 	0x09, 0x42,             /*          Usage (Tip Switch),             */
546 	0x09, 0x44,             /*          Usage (Barrel Switch),          */
547 	0x09, 0x46,             /*          Usage (Tablet Pick),            */
548 	0x95, 0x03,             /*          Report Count (3),               */
549 	0x81, 0x02,             /*          Input (Variable),               */
550 	0x95, 0x03,             /*          Report Count (3),               */
551 	0x81, 0x03,             /*          Input (Constant, Variable),     */
552 	0x09, 0x32,             /*          Usage (In Range),               */
553 	0x95, 0x01,             /*          Report Count (1),               */
554 	0x81, 0x02,             /*          Input (Variable),               */
555 	0x95, 0x01,             /*          Report Count (1),               */
556 	0x81, 0x03,             /*          Input (Constant, Variable),     */
557 	0x75, 0x10,             /*          Report Size (16),               */
558 	0x95, 0x01,             /*          Report Count (1),               */
559 	0xA4,                   /*          Push,                           */
560 	0x05, 0x01,             /*          Usage Page (Desktop),           */
561 	0x65, 0x13,             /*          Unit (Inch),                    */
562 	0x55, 0xFD,             /*          Unit Exponent (-3),             */
563 	0x34,                   /*          Physical Minimum (0),           */
564 	0x09, 0x30,             /*          Usage (X),                      */
565 	0x27, UCLOGIC_RDESC_PEN_PH(X_LM),
566 				/*          Logical Maximum (PLACEHOLDER),  */
567 	0x47, UCLOGIC_RDESC_PEN_PH(X_PM),
568 				/*          Physical Maximum (PLACEHOLDER), */
569 	0x81, 0x02,             /*          Input (Variable),               */
570 	0x09, 0x31,             /*          Usage (Y),                      */
571 	0x27, UCLOGIC_RDESC_PEN_PH(Y_LM),
572 				/*          Logical Maximum (PLACEHOLDER),  */
573 	0x47, UCLOGIC_RDESC_PEN_PH(Y_PM),
574 				/*          Physical Maximum (PLACEHOLDER), */
575 	0x81, 0x02,             /*          Input (Variable),               */
576 	0xB4,                   /*          Pop,                            */
577 	0x09, 0x30,             /*          Usage (Tip Pressure),           */
578 	0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM),
579 				/*          Logical Maximum (PLACEHOLDER),  */
580 	0x81, 0x02,             /*          Input (Variable),               */
581 	0xC0,                   /*      End Collection,                     */
582 	0xC0                    /*  End Collection                          */
583 };
584 
585 const size_t uclogic_rdesc_v1_pen_template_size =
586 			sizeof(uclogic_rdesc_v1_pen_template_arr);
587 
588 /* Fixed report descriptor template for (tweaked) v2 pen reports */
589 const __u8 uclogic_rdesc_v2_pen_template_arr[] = {
590 	0x05, 0x0D,             /*  Usage Page (Digitizer),                 */
591 	0x09, 0x01,             /*  Usage (Digitizer),                      */
592 	0xA1, 0x01,             /*  Collection (Application),               */
593 	0x85, 0x08,             /*      Report ID (8),                      */
594 	0x09, 0x20,             /*      Usage (Stylus),                     */
595 	0xA0,                   /*      Collection (Physical),              */
596 	0x14,                   /*          Logical Minimum (0),            */
597 	0x25, 0x01,             /*          Logical Maximum (1),            */
598 	0x75, 0x01,             /*          Report Size (1),                */
599 	0x09, 0x42,             /*          Usage (Tip Switch),             */
600 	0x09, 0x44,             /*          Usage (Barrel Switch),          */
601 	0x09, 0x46,             /*          Usage (Tablet Pick),            */
602 	0x95, 0x03,             /*          Report Count (3),               */
603 	0x81, 0x02,             /*          Input (Variable),               */
604 	0x95, 0x03,             /*          Report Count (3),               */
605 	0x81, 0x03,             /*          Input (Constant, Variable),     */
606 	0x09, 0x32,             /*          Usage (In Range),               */
607 	0x95, 0x01,             /*          Report Count (1),               */
608 	0x81, 0x02,             /*          Input (Variable),               */
609 	0x95, 0x01,             /*          Report Count (1),               */
610 	0x81, 0x03,             /*          Input (Constant, Variable),     */
611 	0x95, 0x01,             /*          Report Count (1),               */
612 	0xA4,                   /*          Push,                           */
613 	0x05, 0x01,             /*          Usage Page (Desktop),           */
614 	0x65, 0x13,             /*          Unit (Inch),                    */
615 	0x55, 0xFD,             /*          Unit Exponent (-3),             */
616 	0x75, 0x18,             /*          Report Size (24),               */
617 	0x34,                   /*          Physical Minimum (0),           */
618 	0x09, 0x30,             /*          Usage (X),                      */
619 	0x27, UCLOGIC_RDESC_PEN_PH(X_LM),
620 				/*          Logical Maximum (PLACEHOLDER),  */
621 	0x47, UCLOGIC_RDESC_PEN_PH(X_PM),
622 				/*          Physical Maximum (PLACEHOLDER), */
623 	0x81, 0x02,             /*          Input (Variable),               */
624 	0x09, 0x31,             /*          Usage (Y),                      */
625 	0x27, UCLOGIC_RDESC_PEN_PH(Y_LM),
626 				/*          Logical Maximum (PLACEHOLDER),  */
627 	0x47, UCLOGIC_RDESC_PEN_PH(Y_PM),
628 				/*          Physical Maximum (PLACEHOLDER), */
629 	0x81, 0x02,             /*          Input (Variable),               */
630 	0xB4,                   /*          Pop,                            */
631 	0x09, 0x30,             /*          Usage (Tip Pressure),           */
632 	0x75, 0x10,             /*          Report Size (16),               */
633 	0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM),
634 				/*          Logical Maximum (PLACEHOLDER),  */
635 	0x81, 0x02,             /*          Input (Variable),               */
636 	0x54,                   /*          Unit Exponent (0),              */
637 	0x65, 0x14,             /*          Unit (Degrees),                 */
638 	0x35, 0xC4,             /*          Physical Minimum (-60),         */
639 	0x45, 0x3C,             /*          Physical Maximum (60),          */
640 	0x15, 0xC4,             /*          Logical Minimum (-60),          */
641 	0x25, 0x3C,             /*          Logical Maximum (60),           */
642 	0x75, 0x08,             /*          Report Size (8),                */
643 	0x95, 0x02,             /*          Report Count (2),               */
644 	0x09, 0x3D,             /*          Usage (X Tilt),                 */
645 	0x09, 0x3E,             /*          Usage (Y Tilt),                 */
646 	0x81, 0x02,             /*          Input (Variable),               */
647 	0xC0,                   /*      End Collection,                     */
648 	0xC0                    /*  End Collection                          */
649 };
650 
651 const size_t uclogic_rdesc_v2_pen_template_size =
652 			sizeof(uclogic_rdesc_v2_pen_template_arr);
653 
654 /*
655  * Expand to the contents of a generic frame buttons report descriptor.
656  *
657  * @_id:	The report ID to use.
658  * @_size:	Size of the report to pad to, including report ID, bytes.
659  */
660 #define UCLOGIC_RDESC_FRAME_BUTTONS_BYTES(_id, _size) \
661 	0x05, 0x01,     /*  Usage Page (Desktop),               */ \
662 	0x09, 0x07,     /*  Usage (Keypad),                     */ \
663 	0xA1, 0x01,     /*  Collection (Application),           */ \
664 	0x85, (_id),    /*      Report ID (_id),                */ \
665 	0x14,           /*      Logical Minimum (0),            */ \
666 	0x25, 0x01,     /*      Logical Maximum (1),            */ \
667 	0x75, 0x01,     /*      Report Size (1),                */ \
668 	0x05, 0x0D,     /*      Usage Page (Digitizer),         */ \
669 	0x09, 0x39,     /*      Usage (Tablet Function Keys),   */ \
670 	0xA0,           /*      Collection (Physical),          */ \
671 	0x09, 0x44,     /*          Usage (Barrel Switch),      */ \
672 	0x95, 0x01,     /*          Report Count (1),           */ \
673 	0x81, 0x02,     /*          Input (Variable),           */ \
674 	0x05, 0x01,     /*          Usage Page (Desktop),       */ \
675 	0x09, 0x30,     /*          Usage (X),                  */ \
676 	0x09, 0x31,     /*          Usage (Y),                  */ \
677 	0x95, 0x02,     /*          Report Count (2),           */ \
678 	0x81, 0x02,     /*          Input (Variable),           */ \
679 	0x95, 0x15,     /*          Report Count (21),          */ \
680 	0x81, 0x01,     /*          Input (Constant),           */ \
681 	0x05, 0x09,     /*          Usage Page (Button),        */ \
682 	0x19, 0x01,     /*          Usage Minimum (01h),        */ \
683 	0x29, 0x0A,     /*          Usage Maximum (0Ah),        */ \
684 	0x95, 0x0A,     /*          Report Count (10),          */ \
685 	0x81, 0x02,     /*          Input (Variable),           */ \
686 	0xC0,           /*      End Collection,                 */ \
687 	0x05, 0x01,     /*      Usage Page (Desktop),           */ \
688 	0x09, 0x05,     /*      Usage (Gamepad),                */ \
689 	0xA0,           /*      Collection (Physical),          */ \
690 	0x05, 0x09,     /*          Usage Page (Button),        */ \
691 	0x19, 0x01,     /*          Usage Minimum (01h),        */ \
692 	0x29, 0x03,     /*          Usage Maximum (03h),        */ \
693 	0x95, 0x03,     /*          Report Count (3),           */ \
694 	0x81, 0x02,     /*          Input (Variable),           */ \
695 	0x95, ((_size) * 8 - 45),                                  \
696 			/*          Report Count (padding),     */ \
697 	0x81, 0x01,     /*          Input (Constant),           */ \
698 	0xC0,           /*      End Collection,                 */ \
699 	0xC0            /*  End Collection                      */
700 
701 /* Fixed report descriptor for (tweaked) v1 frame reports */
702 const __u8 uclogic_rdesc_v1_frame_arr[] = {
703 	UCLOGIC_RDESC_FRAME_BUTTONS_BYTES(UCLOGIC_RDESC_V1_FRAME_ID, 8)
704 };
705 const size_t uclogic_rdesc_v1_frame_size =
706 			sizeof(uclogic_rdesc_v1_frame_arr);
707 
708 /* Fixed report descriptor for (tweaked) v2 frame button reports */
709 const __u8 uclogic_rdesc_v2_frame_buttons_arr[] = {
710 	UCLOGIC_RDESC_FRAME_BUTTONS_BYTES(UCLOGIC_RDESC_V2_FRAME_BUTTONS_ID,
711 					  12)
712 };
713 const size_t uclogic_rdesc_v2_frame_buttons_size =
714 			sizeof(uclogic_rdesc_v2_frame_buttons_arr);
715 
716 /* Fixed report descriptor for (tweaked) v2 frame touch ring reports */
717 const __u8 uclogic_rdesc_v2_frame_touch_ring_arr[] = {
718 	0x05, 0x01,         /*  Usage Page (Desktop),               */
719 	0x09, 0x07,         /*  Usage (Keypad),                     */
720 	0xA1, 0x01,         /*  Collection (Application),           */
721 	0x85, UCLOGIC_RDESC_V2_FRAME_TOUCH_ID,
722 			    /*      Report ID (TOUCH_ID),           */
723 	0x14,               /*      Logical Minimum (0),            */
724 	0x05, 0x0D,         /*      Usage Page (Digitizer),         */
725 	0x09, 0x39,         /*      Usage (Tablet Function Keys),   */
726 	0xA0,               /*      Collection (Physical),          */
727 	0x25, 0x01,         /*          Logical Maximum (1),        */
728 	0x75, 0x01,         /*          Report Size (1),            */
729 	0x05, 0x09,         /*          Usage Page (Button),        */
730 	0x09, 0x01,         /*          Usage (01h),                */
731 	0x95, 0x01,         /*          Report Count (1),           */
732 	0x81, 0x02,         /*          Input (Variable),           */
733 	0x95, 0x07,         /*          Report Count (7),           */
734 	0x81, 0x01,         /*          Input (Constant),           */
735 	0x75, 0x08,         /*          Report Size (8),            */
736 	0x95, 0x02,         /*          Report Count (2),           */
737 	0x81, 0x01,         /*          Input (Constant),           */
738 	0x05, 0x0D,         /*          Usage Page (Digitizer),     */
739 	0x0A, 0xFF, 0xFF,   /*          Usage (FFFFh),              */
740 	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
741 	0x95, 0x01,         /*          Report Count (1),           */
742 	0x81, 0x02,         /*          Input (Variable),           */
743 	0x05, 0x01,         /*          Usage Page (Desktop),       */
744 	0x09, 0x38,         /*          Usage (Wheel),              */
745 	0x95, 0x01,         /*          Report Count (1),           */
746 	0x15, 0x00,         /*          Logical Minimum (0),        */
747 	0x25, 0x0B,         /*          Logical Maximum (11),       */
748 	0x81, 0x02,         /*          Input (Variable),           */
749 	0x09, 0x30,         /*          Usage (X),                  */
750 	0x09, 0x31,         /*          Usage (Y),                  */
751 	0x14,               /*          Logical Minimum (0),        */
752 	0x25, 0x01,         /*          Logical Maximum (1),        */
753 	0x75, 0x01,         /*          Report Size (1),            */
754 	0x95, 0x02,         /*          Report Count (2),           */
755 	0x81, 0x02,         /*          Input (Variable),           */
756 	0x95, 0x2E,         /*          Report Count (46),          */
757 	0x81, 0x01,         /*          Input (Constant),           */
758 	0xC0,               /*      End Collection,                 */
759 	0xC0                /*  End Collection                      */
760 };
761 const size_t uclogic_rdesc_v2_frame_touch_ring_size =
762 			sizeof(uclogic_rdesc_v2_frame_touch_ring_arr);
763 
764 /* Fixed report descriptor for (tweaked) v2 frame touch strip reports */
765 const __u8 uclogic_rdesc_v2_frame_touch_strip_arr[] = {
766 	0x05, 0x01,         /*  Usage Page (Desktop),               */
767 	0x09, 0x07,         /*  Usage (Keypad),                     */
768 	0xA1, 0x01,         /*  Collection (Application),           */
769 	0x85, UCLOGIC_RDESC_V2_FRAME_TOUCH_ID,
770 			    /*      Report ID (TOUCH_ID),           */
771 	0x14,               /*      Logical Minimum (0),            */
772 	0x05, 0x0D,         /*      Usage Page (Digitizer),         */
773 	0x09, 0x39,         /*      Usage (Tablet Function Keys),   */
774 	0xA0,               /*      Collection (Physical),          */
775 	0x25, 0x01,         /*          Logical Maximum (1),        */
776 	0x75, 0x01,         /*          Report Size (1),            */
777 	0x05, 0x09,         /*          Usage Page (Button),        */
778 	0x09, 0x01,         /*          Usage (01h),                */
779 	0x95, 0x01,         /*          Report Count (1),           */
780 	0x81, 0x02,         /*          Input (Variable),           */
781 	0x95, 0x07,         /*          Report Count (7),           */
782 	0x81, 0x01,         /*          Input (Constant),           */
783 	0x75, 0x08,         /*          Report Size (8),            */
784 	0x95, 0x02,         /*          Report Count (2),           */
785 	0x81, 0x01,         /*          Input (Constant),           */
786 	0x05, 0x0D,         /*          Usage Page (Digitizer),     */
787 	0x0A, 0xFF, 0xFF,   /*          Usage (FFFFh),              */
788 	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
789 	0x95, 0x01,         /*          Report Count (1),           */
790 	0x81, 0x02,         /*          Input (Variable),           */
791 	0x05, 0x01,         /*          Usage Page (Desktop),       */
792 	0x09, 0x38,         /*          Usage (Wheel),              */
793 	0x95, 0x01,         /*          Report Count (1),           */
794 	0x15, 0x00,         /*          Logical Minimum (0),        */
795 	0x25, 0x07,         /*          Logical Maximum (7),        */
796 	0x81, 0x02,         /*          Input (Variable),           */
797 	0x09, 0x30,         /*          Usage (X),                  */
798 	0x09, 0x31,         /*          Usage (Y),                  */
799 	0x14,               /*          Logical Minimum (0),        */
800 	0x25, 0x01,         /*          Logical Maximum (1),        */
801 	0x75, 0x01,         /*          Report Size (1),            */
802 	0x95, 0x02,         /*          Report Count (2),           */
803 	0x81, 0x02,         /*          Input (Variable),           */
804 	0x95, 0x2E,         /*          Report Count (46),          */
805 	0x81, 0x01,         /*          Input (Constant),           */
806 	0xC0,               /*      End Collection,                 */
807 	0xC0                /*  End Collection                      */
808 };
809 const size_t uclogic_rdesc_v2_frame_touch_strip_size =
810 			sizeof(uclogic_rdesc_v2_frame_touch_strip_arr);
811 
812 /* Fixed report descriptor for (tweaked) v2 frame dial reports */
813 const __u8 uclogic_rdesc_v2_frame_dial_arr[] = {
814 	0x05, 0x01,         /*  Usage Page (Desktop),               */
815 	0x09, 0x07,         /*  Usage (Keypad),                     */
816 	0xA1, 0x01,         /*  Collection (Application),           */
817 	0x85, UCLOGIC_RDESC_V2_FRAME_DIAL_ID,
818 			    /*      Report ID (DIAL_ID),            */
819 	0x14,               /*      Logical Minimum (0),            */
820 	0x05, 0x0D,         /*      Usage Page (Digitizer),         */
821 	0x09, 0x39,         /*      Usage (Tablet Function Keys),   */
822 	0xA0,               /*      Collection (Physical),          */
823 	0x25, 0x01,         /*          Logical Maximum (1),        */
824 	0x75, 0x01,         /*          Report Size (1),            */
825 	0x95, 0x01,         /*          Report Count (1),           */
826 	0x81, 0x01,         /*          Input (Constant),           */
827 	0x05, 0x09,         /*          Usage Page (Button),        */
828 	0x09, 0x01,         /*          Usage (01h),                */
829 	0x95, 0x01,         /*          Report Count (1),           */
830 	0x81, 0x02,         /*          Input (Variable),           */
831 	0x95, 0x06,         /*          Report Count (6),           */
832 	0x81, 0x01,         /*          Input (Constant),           */
833 	0x75, 0x08,         /*          Report Size (8),            */
834 	0x95, 0x02,         /*          Report Count (2),           */
835 	0x81, 0x01,         /*          Input (Constant),           */
836 	0x05, 0x0D,         /*          Usage Page (Digitizer),     */
837 	0x0A, 0xFF, 0xFF,   /*          Usage (FFFFh),              */
838 	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
839 	0x95, 0x01,         /*          Report Count (1),           */
840 	0x81, 0x02,         /*          Input (Variable),           */
841 	0x05, 0x01,         /*          Usage Page (Desktop),       */
842 	0x09, 0x38,         /*          Usage (Wheel),              */
843 	0x95, 0x01,         /*          Report Count (1),           */
844 	0x15, 0xFF,         /*          Logical Minimum (-1),       */
845 	0x25, 0x01,         /*          Logical Maximum (1),        */
846 	0x81, 0x06,         /*          Input (Variable, Relative), */
847 	0x09, 0x30,         /*          Usage (X),                  */
848 	0x09, 0x31,         /*          Usage (Y),                  */
849 	0x14,               /*          Logical Minimum (0),        */
850 	0x25, 0x01,         /*          Logical Maximum (1),        */
851 	0x75, 0x01,         /*          Report Size (1),            */
852 	0x95, 0x02,         /*          Report Count (2),           */
853 	0x81, 0x02,         /*          Input (Variable),           */
854 	0x95, 0x2E,         /*          Report Count (46),          */
855 	0x81, 0x01,         /*          Input (Constant),           */
856 	0xC0,               /*      End Collection,                 */
857 	0xC0                /*  End Collection                      */
858 };
859 const size_t uclogic_rdesc_v2_frame_dial_size =
860 			sizeof(uclogic_rdesc_v2_frame_dial_arr);
861 
862 /* Fixed report descriptor template for UGEE v2 pen reports */
863 const __u8 uclogic_rdesc_ugee_v2_pen_template_arr[] = {
864 	0x05, 0x0d,         /*  Usage Page (Digitizers),                */
865 	0x09, 0x01,         /*  Usage (Digitizer),                      */
866 	0xa1, 0x01,         /*  Collection (Application),               */
867 	0x85, 0x02,         /*      Report ID (2),                      */
868 	0x09, 0x20,         /*      Usage (Stylus),                     */
869 	0xa1, 0x00,         /*      Collection (Physical),              */
870 	0x09, 0x42,         /*          Usage (Tip Switch),             */
871 	0x09, 0x44,         /*          Usage (Barrel Switch),          */
872 	0x09, 0x46,         /*          Usage (Tablet Pick),            */
873 	0x75, 0x01,         /*          Report Size (1),                */
874 	0x95, 0x03,         /*          Report Count (3),               */
875 	0x14,               /*          Logical Minimum (0),            */
876 	0x25, 0x01,         /*          Logical Maximum (1),            */
877 	0x81, 0x02,         /*          Input (Variable),               */
878 	0x95, 0x02,         /*          Report Count (2),               */
879 	0x81, 0x03,         /*          Input (Constant, Variable),     */
880 	0x09, 0x32,         /*          Usage (In Range),               */
881 	0x95, 0x01,         /*          Report Count (1),               */
882 	0x81, 0x02,         /*          Input (Variable),               */
883 	0x95, 0x02,         /*          Report Count (2),               */
884 	0x81, 0x03,         /*          Input (Constant, Variable),     */
885 	0x75, 0x10,         /*          Report Size (16),               */
886 	0x95, 0x01,         /*          Report Count (1),               */
887 	0x35, 0x00,         /*          Physical Minimum (0),           */
888 	0xa4,               /*          Push,                           */
889 	0x05, 0x01,         /*          Usage Page (Desktop),           */
890 	0x09, 0x30,         /*          Usage (X),                      */
891 	0x65, 0x13,         /*          Unit (Inch),                    */
892 	0x55, 0x0d,         /*          Unit Exponent (-3),             */
893 	0x27, UCLOGIC_RDESC_PEN_PH(X_LM),
894 			    /*          Logical Maximum (PLACEHOLDER),  */
895 	0x47, UCLOGIC_RDESC_PEN_PH(X_PM),
896 			    /*          Physical Maximum (PLACEHOLDER), */
897 	0x81, 0x02,         /*          Input (Variable),               */
898 	0x09, 0x31,         /*          Usage (Y),                      */
899 	0x27, UCLOGIC_RDESC_PEN_PH(Y_LM),
900 			    /*          Logical Maximum (PLACEHOLDER),  */
901 	0x47, UCLOGIC_RDESC_PEN_PH(Y_PM),
902 			    /*          Physical Maximum (PLACEHOLDER), */
903 	0x81, 0x02,         /*          Input (Variable),               */
904 	0xb4,               /*          Pop,                            */
905 	0x09, 0x30,         /*          Usage (Tip Pressure),           */
906 	0x45, 0x00,         /*          Physical Maximum (0),           */
907 	0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM),
908 			    /*          Logical Maximum (PLACEHOLDER),  */
909 	0x75, 0x0D,         /*          Report Size (13),               */
910 	0x95, 0x01,         /*          Report Count (1),               */
911 	0x81, 0x02,         /*          Input (Variable),               */
912 	0x75, 0x01,         /*          Report Size (1),                */
913 	0x95, 0x03,         /*          Report Count (3),               */
914 	0x81, 0x01,         /*          Input (Constant),               */
915 	0x09, 0x3d,         /*          Usage (X Tilt),                 */
916 	0x35, 0xC3,         /*          Physical Minimum (-61),         */
917 	0x45, 0x3C,         /*          Physical Maximum (60),          */
918 	0x15, 0xC3,         /*          Logical Minimum (-61),          */
919 	0x25, 0x3C,         /*          Logical Maximum (60),           */
920 	0x75, 0x08,         /*          Report Size (8),                */
921 	0x95, 0x01,         /*          Report Count (1),               */
922 	0x81, 0x02,         /*          Input (Variable),               */
923 	0x09, 0x3e,         /*          Usage (Y Tilt),                 */
924 	0x35, 0xC3,         /*          Physical Minimum (-61),         */
925 	0x45, 0x3C,         /*          Physical Maximum (60),          */
926 	0x15, 0xC3,         /*          Logical Minimum (-61),          */
927 	0x25, 0x3C,         /*          Logical Maximum (60),           */
928 	0x81, 0x02,         /*          Input (Variable),               */
929 	0xc0,               /*      End Collection,                     */
930 	0xc0,               /*  End Collection                          */
931 };
932 const size_t uclogic_rdesc_ugee_v2_pen_template_size =
933 			sizeof(uclogic_rdesc_ugee_v2_pen_template_arr);
934 
935 /* Fixed report descriptor template for UGEE v2 frame reports (buttons only) */
936 const __u8 uclogic_rdesc_ugee_v2_frame_btn_template_arr[] = {
937 	0x05, 0x01,         /*  Usage Page (Desktop),                   */
938 	0x09, 0x07,         /*  Usage (Keypad),                         */
939 	0xA1, 0x01,         /*  Collection (Application),               */
940 	0x85, UCLOGIC_RDESC_V1_FRAME_ID,
941 			    /*      Report ID,                          */
942 	0x05, 0x0D,         /*      Usage Page (Digitizer),             */
943 	0x09, 0x39,         /*      Usage (Tablet Function Keys),       */
944 	0xA0,               /*      Collection (Physical),              */
945 	0x75, 0x01,         /*          Report Size (1),                */
946 	0x95, 0x08,         /*          Report Count (8),               */
947 	0x81, 0x01,         /*          Input (Constant),               */
948 	0x05, 0x09,         /*          Usage Page (Button),            */
949 	0x19, 0x01,         /*          Usage Minimum (01h),            */
950 	UCLOGIC_RDESC_FRAME_PH_BTN,
951 			    /*          Usage Maximum (PLACEHOLDER),    */
952 	0x95, 0x0A,         /*          Report Count (10),              */
953 	0x14,               /*          Logical Minimum (0),            */
954 	0x25, 0x01,         /*          Logical Maximum (1),            */
955 	0x81, 0x02,         /*          Input (Variable),               */
956 	0x95, 0x46,         /*          Report Count (70),              */
957 	0x81, 0x01,         /*          Input (Constant),               */
958 	0xC0,               /*      End Collection,                     */
959 	0xC0                /*  End Collection                          */
960 };
961 const size_t uclogic_rdesc_ugee_v2_frame_btn_template_size =
962 			sizeof(uclogic_rdesc_ugee_v2_frame_btn_template_arr);
963 
964 /* Fixed report descriptor template for UGEE v2 frame reports (dial) */
965 const __u8 uclogic_rdesc_ugee_v2_frame_dial_template_arr[] = {
966 	0x05, 0x01,         /*  Usage Page (Desktop),                   */
967 	0x09, 0x07,         /*  Usage (Keypad),                         */
968 	0xA1, 0x01,         /*  Collection (Application),               */
969 	0x85, UCLOGIC_RDESC_V1_FRAME_ID,
970 			    /*      Report ID,                          */
971 	0x05, 0x0D,         /*      Usage Page (Digitizer),             */
972 	0x09, 0x39,         /*      Usage (Tablet Function Keys),       */
973 	0xA0,               /*      Collection (Physical),              */
974 	0x75, 0x01,         /*          Report Size (1),                */
975 	0x95, 0x08,         /*          Report Count (8),               */
976 	0x81, 0x01,         /*          Input (Constant),               */
977 	0x05, 0x09,         /*          Usage Page (Button),            */
978 	0x19, 0x01,         /*          Usage Minimum (01h),            */
979 	UCLOGIC_RDESC_FRAME_PH_BTN,
980 			    /*          Usage Maximum (PLACEHOLDER),    */
981 	0x95, 0x0A,         /*          Report Count (10),              */
982 	0x14,               /*          Logical Minimum (0),            */
983 	0x25, 0x01,         /*          Logical Maximum (1),            */
984 	0x81, 0x02,         /*          Input (Variable),               */
985 	0x95, 0x06,         /*          Report Count (6),               */
986 	0x81, 0x01,         /*          Input (Constant),               */
987 	0x75, 0x08,         /*          Report Size (8),                */
988 	0x95, 0x03,         /*          Report Count (3),               */
989 	0x81, 0x01,         /*          Input (Constant),               */
990 	0x05, 0x01,         /*          Usage Page (Desktop),           */
991 	0x09, 0x38,         /*          Usage (Wheel),                  */
992 	0x95, 0x01,         /*          Report Count (1),               */
993 	0x15, 0xFF,         /*          Logical Minimum (-1),           */
994 	0x25, 0x01,         /*          Logical Maximum (1),            */
995 	0x81, 0x06,         /*          Input (Variable, Relative),     */
996 	0x95, 0x02,         /*          Report Count (2),               */
997 	0x81, 0x01,         /*          Input (Constant),               */
998 	0xC0,               /*      End Collection,                     */
999 	0xC0                /*  End Collection                          */
1000 };
1001 const size_t uclogic_rdesc_ugee_v2_frame_dial_template_size =
1002 			sizeof(uclogic_rdesc_ugee_v2_frame_dial_template_arr);
1003 
1004 /* Fixed report descriptor template for UGEE v2 frame reports (mouse) */
1005 const __u8 uclogic_rdesc_ugee_v2_frame_mouse_template_arr[] = {
1006 	0x05, 0x01,         /*  Usage Page (Desktop),                   */
1007 	0x09, 0x02,         /*  Usage (Mouse),                          */
1008 	0xA1, 0x01,         /*  Collection (Application),               */
1009 	0x85, 0x01,         /*      Report ID (1),                      */
1010 	0x05, 0x01,         /*      Usage Page (Pointer),               */
1011 	0xA0,               /*      Collection (Physical),              */
1012 	0x75, 0x01,         /*          Report Size (1),                */
1013 	0x95, 0x02,         /*          Report Count (2),               */
1014 	0x05, 0x09,         /*          Usage Page (Button),            */
1015 	0x19, 0x01,         /*          Usage Minimum (01h),            */
1016 	0x29, 0x02,         /*          Usage Maximum (02h),            */
1017 	0x14,               /*          Logical Minimum (0),            */
1018 	0x25, 0x01,         /*          Logical Maximum (1),            */
1019 	0x81, 0x02,         /*          Input (Variable),               */
1020 	0x95, 0x06,         /*          Report Count (6),               */
1021 	0x81, 0x01,         /*          Input (Constant),               */
1022 	0x05, 0x01,         /*          Usage Page (Generic Desktop),   */
1023 	0x09, 0x30,         /*          Usage (X),                      */
1024 	0x09, 0x31,         /*          Usage (Y),                      */
1025 	0x75, 0x10,         /*          Report Size (16),               */
1026 	0x95, 0x02,         /*          Report Count (2),               */
1027 	0x16, 0x00, 0x80,   /*          Logical Minimum (-32768),       */
1028 	0x26, 0xFF, 0x7F,   /*          Logical Maximum (32767),        */
1029 	0x81, 0x06,         /*          Input (Variable, Relative),     */
1030 	0x95, 0x01,         /*          Report Count (1),               */
1031 	0x81, 0x01,         /*          Input (Constant),               */
1032 	0xC0,               /*      End Collection,                     */
1033 	0xC0                /*  End Collection                          */
1034 };
1035 const size_t uclogic_rdesc_ugee_v2_frame_mouse_template_size =
1036 			sizeof(uclogic_rdesc_ugee_v2_frame_mouse_template_arr);
1037 
1038 /* Fixed report descriptor for Ugee EX07 frame */
1039 const __u8 uclogic_rdesc_ugee_ex07_frame_arr[] = {
1040 	0x05, 0x01,             /*  Usage Page (Desktop),                   */
1041 	0x09, 0x07,             /*  Usage (Keypad),                         */
1042 	0xA1, 0x01,             /*  Collection (Application),               */
1043 	0x85, 0x06,             /*      Report ID (6),                      */
1044 	0x05, 0x0D,             /*      Usage Page (Digitizer),             */
1045 	0x09, 0x39,             /*      Usage (Tablet Function Keys),       */
1046 	0xA0,                   /*      Collection (Physical),              */
1047 	0x05, 0x09,             /*          Usage Page (Button),            */
1048 	0x75, 0x01,             /*          Report Size (1),                */
1049 	0x19, 0x03,             /*          Usage Minimum (03h),            */
1050 	0x29, 0x06,             /*          Usage Maximum (06h),            */
1051 	0x95, 0x04,             /*          Report Count (4),               */
1052 	0x81, 0x02,             /*          Input (Variable),               */
1053 	0x95, 0x1A,             /*          Report Count (26),              */
1054 	0x81, 0x03,             /*          Input (Constant, Variable),     */
1055 	0x19, 0x01,             /*          Usage Minimum (01h),            */
1056 	0x29, 0x02,             /*          Usage Maximum (02h),            */
1057 	0x95, 0x02,             /*          Report Count (2),               */
1058 	0x81, 0x02,             /*          Input (Variable),               */
1059 	0xC0,                   /*      End Collection,                     */
1060 	0xC0                    /*  End Collection                          */
1061 };
1062 const size_t uclogic_rdesc_ugee_ex07_frame_size =
1063 			sizeof(uclogic_rdesc_ugee_ex07_frame_arr);
1064 
1065 /* Fixed report descriptor for Ugee G5 frame controls */
1066 const __u8 uclogic_rdesc_ugee_g5_frame_arr[] = {
1067 	0x05, 0x01,         /*  Usage Page (Desktop),               */
1068 	0x09, 0x07,         /*  Usage (Keypad),                     */
1069 	0xA1, 0x01,         /*  Collection (Application),           */
1070 	0x85, 0x06,         /*      Report ID (6),                  */
1071 	0x05, 0x0D,         /*      Usage Page (Digitizer),         */
1072 	0x09, 0x39,         /*      Usage (Tablet Function Keys),   */
1073 	0xA0,               /*      Collection (Physical),          */
1074 	0x14,               /*          Logical Minimum (0),        */
1075 	0x25, 0x01,         /*          Logical Maximum (1),        */
1076 	0x05, 0x01,         /*          Usage Page (Desktop),       */
1077 	0x05, 0x09,         /*          Usage Page (Button),        */
1078 	0x19, 0x01,         /*          Usage Minimum (01h),        */
1079 	0x29, 0x05,         /*          Usage Maximum (05h),        */
1080 	0x75, 0x01,         /*          Report Size (1),            */
1081 	0x95, 0x05,         /*          Report Count (5),           */
1082 	0x81, 0x02,         /*          Input (Variable),           */
1083 	0x75, 0x01,         /*          Report Size (1),            */
1084 	0x95, 0x03,         /*          Report Count (3),           */
1085 	0x81, 0x01,         /*          Input (Constant),           */
1086 	0x05, 0x0D,         /*          Usage Page (Digitizer),     */
1087 	0x0A, 0xFF, 0xFF,   /*          Usage (FFFFh),              */
1088 	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
1089 	0x75, 0x08,         /*          Report Size (8),            */
1090 	0x95, 0x01,         /*          Report Count (1),           */
1091 	0x81, 0x02,         /*          Input (Variable),           */
1092 	0x25, 0x01,         /*          Logical Maximum (1),        */
1093 	0x09, 0x44,         /*          Usage (Barrel Switch),      */
1094 	0x75, 0x01,         /*          Report Size (1),            */
1095 	0x95, 0x01,         /*          Report Count (1),           */
1096 	0x81, 0x02,         /*          Input (Variable),           */
1097 	0x05, 0x01,         /*          Usage Page (Desktop),       */
1098 	0x09, 0x30,         /*          Usage (X),                  */
1099 	0x09, 0x31,         /*          Usage (Y),                  */
1100 	0x75, 0x01,         /*          Report Size (1),            */
1101 	0x95, 0x02,         /*          Report Count (2),           */
1102 	0x81, 0x02,         /*          Input (Variable),           */
1103 	0x75, 0x01,         /*          Report Size (1),            */
1104 	0x95, 0x0B,         /*          Report Count (11),          */
1105 	0x81, 0x01,         /*          Input (Constant),           */
1106 	0x05, 0x01,         /*          Usage Page (Desktop),       */
1107 	0x09, 0x38,         /*          Usage (Wheel),              */
1108 	0x15, 0xFF,         /*          Logical Minimum (-1),       */
1109 	0x25, 0x01,         /*          Logical Maximum (1),        */
1110 	0x75, 0x02,         /*          Report Size (2),            */
1111 	0x95, 0x01,         /*          Report Count (1),           */
1112 	0x81, 0x06,         /*          Input (Variable, Relative), */
1113 	0xC0,               /*      End Collection,                 */
1114 	0xC0                /*  End Collection                      */
1115 };
1116 const size_t uclogic_rdesc_ugee_g5_frame_size =
1117 			sizeof(uclogic_rdesc_ugee_g5_frame_arr);
1118 
1119 /* Fixed report descriptor for XP-Pen Deco 01 frame controls */
1120 const __u8 uclogic_rdesc_xppen_deco01_frame_arr[] = {
1121 	0x05, 0x01, /*  Usage Page (Desktop),               */
1122 	0x09, 0x07, /*  Usage (Keypad),                     */
1123 	0xA1, 0x01, /*  Collection (Application),           */
1124 	0x85, 0x06, /*      Report ID (6),                  */
1125 	0x14,       /*      Logical Minimum (0),            */
1126 	0x25, 0x01, /*      Logical Maximum (1),            */
1127 	0x75, 0x01, /*      Report Size (1),                */
1128 	0x05, 0x0D, /*      Usage Page (Digitizer),         */
1129 	0x09, 0x39, /*      Usage (Tablet Function Keys),   */
1130 	0xA0,       /*      Collection (Physical),          */
1131 	0x05, 0x09, /*          Usage Page (Button),        */
1132 	0x19, 0x01, /*          Usage Minimum (01h),        */
1133 	0x29, 0x08, /*          Usage Maximum (08h),        */
1134 	0x95, 0x08, /*          Report Count (8),           */
1135 	0x81, 0x02, /*          Input (Variable),           */
1136 	0x05, 0x0D, /*          Usage Page (Digitizer),     */
1137 	0x09, 0x44, /*          Usage (Barrel Switch),      */
1138 	0x95, 0x01, /*          Report Count (1),           */
1139 	0x81, 0x02, /*          Input (Variable),           */
1140 	0x05, 0x01, /*          Usage Page (Desktop),       */
1141 	0x09, 0x30, /*          Usage (X),                  */
1142 	0x09, 0x31, /*          Usage (Y),                  */
1143 	0x95, 0x02, /*          Report Count (2),           */
1144 	0x81, 0x02, /*          Input (Variable),           */
1145 	0x95, 0x15, /*          Report Count (21),          */
1146 	0x81, 0x01, /*          Input (Constant),           */
1147 	0xC0,       /*      End Collection,                 */
1148 	0xC0        /*  End Collection                      */
1149 };
1150 
1151 const size_t uclogic_rdesc_xppen_deco01_frame_size =
1152 			sizeof(uclogic_rdesc_xppen_deco01_frame_arr);
1153 
1154 /**
1155  * uclogic_rdesc_template_apply() - apply report descriptor parameters to a
1156  * report descriptor template, creating a report descriptor. Copies the
1157  * template over to the new report descriptor and replaces every occurrence of
1158  * the template placeholders, followed by an index byte, with the value from the
1159  * parameter list at that index.
1160  *
1161  * @template_ptr:	Pointer to the template buffer.
1162  * @template_size:	Size of the template buffer.
1163  * @param_list:		List of template parameters.
1164  * @param_num:		Number of parameters in the list.
1165  *
1166  * Returns:
1167  *	Kmalloc-allocated pointer to the created report descriptor,
1168  *	or NULL if allocation failed.
1169  */
1170 __u8 *uclogic_rdesc_template_apply(const __u8 *template_ptr,
1171 				   size_t template_size,
1172 				   const s32 *param_list,
1173 				   size_t param_num)
1174 {
1175 	static const __u8 btn_head[] = {UCLOGIC_RDESC_FRAME_PH_BTN_HEAD};
1176 	static const __u8 pen_head[] = {UCLOGIC_RDESC_PEN_PH_HEAD};
1177 	__u8 *rdesc_ptr;
1178 	__u8 *p;
1179 	s32 v;
1180 
1181 	rdesc_ptr = kmemdup(template_ptr, template_size, GFP_KERNEL);
1182 	if (rdesc_ptr == NULL)
1183 		return NULL;
1184 
1185 	for (p = rdesc_ptr; p + sizeof(btn_head) < rdesc_ptr + template_size;) {
1186 		if (p + sizeof(pen_head) < rdesc_ptr + template_size &&
1187 		    memcmp(p, pen_head, sizeof(pen_head)) == 0 &&
1188 		    p[sizeof(pen_head)] < param_num) {
1189 			v = param_list[p[sizeof(pen_head)]];
1190 			put_unaligned((__force u32)cpu_to_le32(v), (s32 *)p);
1191 			p += sizeof(pen_head) + 1;
1192 		} else if (memcmp(p, btn_head, sizeof(btn_head)) == 0 &&
1193 			   p[sizeof(btn_head)] < param_num) {
1194 			v = param_list[p[sizeof(btn_head)]];
1195 			put_unaligned((__u8)0x2A, p); /* Usage Maximum */
1196 			put_unaligned_le16((__force u16)cpu_to_le16(v), p + 1);
1197 			p += sizeof(btn_head) + 1;
1198 		} else {
1199 			p++;
1200 		}
1201 	}
1202 
1203 	return rdesc_ptr;
1204 }
1205