write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/media/rc/ttusbir.c
..
..
@@ -1,17 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  * TechnoTrend USB IR Receiver
3
4
  *
4
5
  * Copyright (C) 2012 Sean Young <sean@mess.org>
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License as published by
8
- * the Free Software Foundation; either version 2 of the License, or
9
- * (at your option) any later version.
10
- *
11
- * This program is distributed in the hope that it will be useful,
12
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
- * GNU General Public License for more details.
15
6
  */
16
7
 
17
8
 #include <linux/module.h>
..
..
@@ -29,8 +20,8 @@
29
20
  * messages per second (!), whether IR is idle or not.
30
21
  */
31
22
 #define NUM_URBS	4
32
-#define NS_PER_BYTE	62500
33
-#define NS_PER_BIT	(NS_PER_BYTE/8)
23
+#define US_PER_BYTE	62
24
+#define US_PER_BIT	(US_PER_BYTE / 8)
34
25
 
35
26
 struct ttusbir {
36
27
 	struct rc_dev *rc;
..
..
@@ -117,24 +108,22 @@
117
108
  */
118
109
 static void ttusbir_process_ir_data(struct ttusbir *tt, uint8_t *buf)
119
110
 {
120
-	struct ir_raw_event rawir;
111
+	struct ir_raw_event rawir = {};
121
112
 	unsigned i, v, b;
122
113
 	bool event = false;
123
-
124
-	init_ir_raw_event(&rawir);
125
114
 
126
115
 	for (i = 0; i < 128; i++) {
127
116
 		v = buf[i] & 0xfe;
128
117
 		switch (v) {
129
118
 		case 0xfe:
130
119
 			rawir.pulse = false;
131
-			rawir.duration = NS_PER_BYTE;
120
+			rawir.duration = US_PER_BYTE;
132
121
 			if (ir_raw_event_store_with_filter(tt->rc, &rawir))
133
122
 				event = true;
134
123
 			break;
135
124
 		case 0:
136
125
 			rawir.pulse = true;
137
-			rawir.duration = NS_PER_BYTE;
126
+			rawir.duration = US_PER_BYTE;
138
127
 			if (ir_raw_event_store_with_filter(tt->rc, &rawir))
139
128
 				event = true;
140
129
 			break;
..
..
@@ -148,12 +137,12 @@
148
137
 				rawir.pulse = false;
149
138
 			}
150
139
 
151
-			rawir.duration = NS_PER_BIT * (8 - b);
140
+			rawir.duration = US_PER_BIT * (8 - b);
152
141
 			if (ir_raw_event_store_with_filter(tt->rc, &rawir))
153
142
 				event = true;
154
143
 
155
144
 			rawir.pulse = !rawir.pulse;
156
-			rawir.duration = NS_PER_BIT * b;
145
+			rawir.duration = US_PER_BIT * b;
157
146
 			if (ir_raw_event_store_with_filter(tt->rc, &rawir))
158
147
 				event = true;
159
148
 			break;
..
..
@@ -322,10 +311,10 @@
322
311
 	rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
323
312
 
324
313
 	/*
325
-	 * The precision is NS_PER_BIT, but since every 8th bit can be
326
-	 * overwritten with garbage the accuracy is at best 2 * NS_PER_BIT.
314
+	 * The precision is US_PER_BIT, but since every 8th bit can be
315
+	 * overwritten with garbage the accuracy is at best 2 * US_PER_BIT.
327
316
 	 */
328
-	rc->rx_resolution = NS_PER_BIT;
317
+	rc->rx_resolution = 2 * US_PER_BIT;
329
318
 
330
319
 	ret = rc_register_device(rc);
331
320
 	if (ret) {