util.c

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    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 
    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 EXPORT_SYMBOL(check_hw_ready);
   23 
   24 bool ltecoex_read_reg(struct rtw_dev *rtwdev, u16 offset, u32 *val)
   25 {
   26         struct rtw_chip_info *chip = rtwdev->chip;
   27         const struct rtw_ltecoex_addr *ltecoex = chip->ltecoex_addr;
   28 
   29         if (!check_hw_ready(rtwdev, ltecoex->ctrl, LTECOEX_READY, 1))
   30                 return false;
   31 
   32         rtw_write32(rtwdev, ltecoex->ctrl, 0x800F0000 | offset);
   33         *val = rtw_read32(rtwdev, ltecoex->rdata);
   34 
   35         return true;
   36 }
   37 
   38 bool ltecoex_reg_write(struct rtw_dev *rtwdev, u16 offset, u32 value)
   39 {
   40         struct rtw_chip_info *chip = rtwdev->chip;
   41         const struct rtw_ltecoex_addr *ltecoex = chip->ltecoex_addr;
   42 
   43         if (!check_hw_ready(rtwdev, ltecoex->ctrl, LTECOEX_READY, 1))
   44                 return false;
   45 
   46         rtw_write32(rtwdev, ltecoex->wdata, value);
   47         rtw_write32(rtwdev, ltecoex->ctrl, 0xC00F0000 | offset);
   48 
   49         return true;
   50 }
   51 
   52 void rtw_restore_reg(struct rtw_dev *rtwdev,
   53                      struct rtw_backup_info *bckp, u32 num)
   54 {
   55         u8 len;
   56         u32 reg;
   57         u32 val;
   58         int i;
   59 
   60         for (i = 0; i < num; i++, bckp++) {
   61                 len = bckp->len;
   62                 reg = bckp->reg;
   63                 val = bckp->val;
   64 
   65                 switch (len) {
   66                 case 1:
   67                         rtw_write8(rtwdev, reg, (u8)val);
   68                         break;
   69                 case 2:
   70                         rtw_write16(rtwdev, reg, (u16)val);
   71                         break;
   72                 case 4:
   73                         rtw_write32(rtwdev, reg, (u32)val);
   74                         break;
   75                 default:
   76                         break;
   77                 }
   78         }
   79 }
   80 EXPORT_SYMBOL(rtw_restore_reg);
   81 
   82 void rtw_desc_to_mcsrate(u16 rate, u8 *mcs, u8 *nss)
   83 {
   84         if (rate <= DESC_RATE54M)
   85                 return;
   86 
   87         if (rate >= DESC_RATEVHT1SS_MCS0 &&
   88             rate <= DESC_RATEVHT1SS_MCS9) {
   89                 *nss = 1;
   90                 *mcs = rate - DESC_RATEVHT1SS_MCS0;
   91         } else if (rate >= DESC_RATEVHT2SS_MCS0 &&
   92                    rate <= DESC_RATEVHT2SS_MCS9) {
   93                 *nss = 2;
   94                 *mcs = rate - DESC_RATEVHT2SS_MCS0;
   95         } else if (rate >= DESC_RATEVHT3SS_MCS0 &&
   96                    rate <= DESC_RATEVHT3SS_MCS9) {
   97                 *nss = 3;
   98                 *mcs = rate - DESC_RATEVHT3SS_MCS0;
   99         } else if (rate >= DESC_RATEVHT4SS_MCS0 &&
  100                    rate <= DESC_RATEVHT4SS_MCS9) {
  101                 *nss = 4;
  102                 *mcs = rate - DESC_RATEVHT4SS_MCS0;
  103         } else if (rate >= DESC_RATEMCS0 &&
  104                    rate <= DESC_RATEMCS15) {
  105                 *mcs = rate - DESC_RATEMCS0;
  106         }
  107 }

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FreeBSD/Linux Kernel Cross Reference sys/contrib/dev/rtw88/util.c

FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/rtw88/util.c