1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3  *
4  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
5  *
6  ******************************************************************************/
7 
8 #include <drv_types.h>
9 #include <linux/kernel.h>
10 
11 
12 struct ch_freq {
13 	u32 channel;
14 	u32 frequency;
15 };
16 
17 static struct ch_freq ch_freq_map[] = {
18 	{1, 2412}, {2, 2417}, {3, 2422}, {4, 2427}, {5, 2432},
19 	{6, 2437}, {7, 2442}, {8, 2447}, {9, 2452}, {10, 2457},
20 	{11, 2462}, {12, 2467}, {13, 2472}, {14, 2484},
21 	/*  UNII */
22 	{36, 5180}, {40, 5200}, {44, 5220}, {48, 5240}, {52, 5260},
23 	{56, 5280}, {60, 5300}, {64, 5320}, {149, 5745}, {153, 5765},
24 	{157, 5785}, {161, 5805}, {165, 5825}, {167, 5835}, {169, 5845},
25 	{171, 5855}, {173, 5865},
26 	/* HiperLAN2 */
27 	{100, 5500}, {104, 5520}, {108, 5540}, {112, 5560}, {116, 5580},
28 	{120, 5600}, {124, 5620}, {128, 5640}, {132, 5660}, {136, 5680},
29 	{140, 5700},
30 	/* Japan MMAC */
31 	{34, 5170}, {38, 5190}, {42, 5210}, {46, 5230},
32 	/*  Japan */
33 	{184, 4920}, {188, 4940}, {192, 4960}, {196, 4980},
34 	{208, 5040},/* Japan, means J08 */
35 	{212, 5060},/* Japan, means J12 */
36 	{216, 5080},/* Japan, means J16 */
37 };
38 
39 u32 rtw_ch2freq(u32 channel)
40 {
41 	u8 i;
42 	u32 freq = 0;
43 
44 	for (i = 0; i < ARRAY_SIZE(ch_freq_map); i++) {
45 		if (channel == ch_freq_map[i].channel) {
46 			freq = ch_freq_map[i].frequency;
47 				break;
48 		}
49 	}
50 	if (i == ARRAY_SIZE(ch_freq_map))
51 		freq = 2412;
52 
53 	return freq;
54 }
55