drivers/net/wireless/mediatek/mt7601u/core.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
   4  * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
   5  */
   6
   7 #include "mt7601u.h"
   8
   9 int mt7601u_wait_asic_ready(struct mt7601u_dev *dev)
  10 {
  11         int i = 100;
  12         u32 val;
  13
  14         do {
  15                 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
  16                         return -EIO;
  17
  18                 val = mt7601u_rr(dev, MT_MAC_CSR0);
  19                 if (val && ~val)
  20                         return 0;
  21
  22                 udelay(10);
  23         } while (i--);
  24
  25         return -EIO;
  26 }
  27
  28 bool mt76_poll(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val,
  29                int timeout)
  30 {
  31         u32 cur;
  32
  33         timeout /= 10;
  34         do {
  35                 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
  36                         return false;
  37
  38                 cur = mt7601u_rr(dev, offset) & mask;
  39                 if (cur == val)
  40                         return true;
  41
  42                 udelay(10);
  43         } while (timeout-- > 0);
  44
  45         dev_err(dev->dev, "Error: Time out with reg %08x\n", offset);
  46
  47         return false;
  48 }
  49
  50 bool mt76_poll_msec(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val,
  51                     int timeout)
  52 {
  53         u32 cur;
  54
  55         timeout /= 10;
  56         do {
  57                 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
  58                         return false;
  59
  60                 cur = mt7601u_rr(dev, offset) & mask;
  61                 if (cur == val)
  62                         return true;
  63
  64                 msleep(10);
  65         } while (timeout-- > 0);
  66
  67         dev_err(dev->dev, "Error: Time out with reg %08x\n", offset);
  68
  69         return false;
  70 }