1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright(c) 2018-2019 Realtek Corporation
3 */
4
5 #include "main.h"
6 #include "util.h"
7 #include "reg.h"
8
check_hw_ready(struct rtw_dev * rtwdev,u32 addr,u32 mask,u32 target)9 bool check_hw_ready(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 target)
10 {
11 u32 cnt;
12
13 for (cnt = 0; cnt < 1000; cnt++) {
14 if (rtw_read32_mask(rtwdev, addr, mask) == target)
15 return true;
16
17 udelay(10);
18 }
19
20 return false;
21 }
22
ltecoex_read_reg(struct rtw_dev * rtwdev,u16 offset,u32 * val)23 bool ltecoex_read_reg(struct rtw_dev *rtwdev, u16 offset, u32 *val)
24 {
25 if (!check_hw_ready(rtwdev, LTECOEX_ACCESS_CTRL, LTECOEX_READY, 1))
26 return false;
27
28 rtw_write32(rtwdev, LTECOEX_ACCESS_CTRL, 0x800F0000 | offset);
29 *val = rtw_read32(rtwdev, LTECOEX_READ_DATA);
30
31 return true;
32 }
33
ltecoex_reg_write(struct rtw_dev * rtwdev,u16 offset,u32 value)34 bool ltecoex_reg_write(struct rtw_dev *rtwdev, u16 offset, u32 value)
35 {
36 if (!check_hw_ready(rtwdev, LTECOEX_ACCESS_CTRL, LTECOEX_READY, 1))
37 return false;
38
39 rtw_write32(rtwdev, LTECOEX_WRITE_DATA, value);
40 rtw_write32(rtwdev, LTECOEX_ACCESS_CTRL, 0xC00F0000 | offset);
41
42 return true;
43 }
44
rtw_restore_reg(struct rtw_dev * rtwdev,struct rtw_backup_info * bckp,u32 num)45 void rtw_restore_reg(struct rtw_dev *rtwdev,
46 struct rtw_backup_info *bckp, u32 num)
47 {
48 u8 len;
49 u32 reg;
50 u32 val;
51 int i;
52
53 for (i = 0; i < num; i++, bckp++) {
54 len = bckp->len;
55 reg = bckp->reg;
56 val = bckp->val;
57
58 switch (len) {
59 case 1:
60 rtw_write8(rtwdev, reg, (u8)val);
61 break;
62 case 2:
63 rtw_write16(rtwdev, reg, (u16)val);
64 break;
65 case 4:
66 rtw_write32(rtwdev, reg, (u32)val);
67 break;
68 default:
69 break;
70 }
71 }
72 }
73
