drivers/net/wireless/zydas/zd1211rw/zd_rf.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* ZD1211 USB-WLAN driver for Linux
   3  *
   4  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
   5  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
   6  */
   7
   8 #include <linux/errno.h>
   9 #include <linux/string.h>
  10
  11 #include "zd_def.h"
  12 #include "zd_rf.h"
  13 #include "zd_mac.h"
  14 #include "zd_chip.h"
  15
  16 static const char * const rfs[] = {
  17         [0]             = "unknown RF0",
  18         [1]             = "unknown RF1",
  19         [UW2451_RF]     = "UW2451_RF",
  20         [UCHIP_RF]      = "UCHIP_RF",
  21         [AL2230_RF]     = "AL2230_RF",
  22         [AL7230B_RF]    = "AL7230B_RF",
  23         [THETA_RF]      = "THETA_RF",
  24         [AL2210_RF]     = "AL2210_RF",
  25         [MAXIM_NEW_RF]  = "MAXIM_NEW_RF",
  26         [UW2453_RF]     = "UW2453_RF",
  27         [AL2230S_RF]    = "AL2230S_RF",
  28         [RALINK_RF]     = "RALINK_RF",
  29         [INTERSIL_RF]   = "INTERSIL_RF",
  30         [RF2959_RF]     = "RF2959_RF",
  31         [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
  32         [PHILIPS_RF]    = "PHILIPS_RF",
  33 };
  34
  35 const char *zd_rf_name(u8 type)
  36 {
  37         if (type & 0xf0)
  38                 type = 0;
  39         return rfs[type];
  40 }
  41
  42 void zd_rf_init(struct zd_rf *rf)
  43 {
  44         memset(rf, 0, sizeof(*rf));
  45
  46         /* default to update channel integration, as almost all RF's do want
  47          * this */
  48         rf->update_channel_int = 1;
  49 }
  50
  51 void zd_rf_clear(struct zd_rf *rf)
  52 {
  53         if (rf->clear)
  54                 rf->clear(rf);
  55         ZD_MEMCLEAR(rf, sizeof(*rf));
  56 }
  57
  58 int zd_rf_init_hw(struct zd_rf *rf, u8 type)
  59 {
  60         int r = 0;
  61         int t;
  62         struct zd_chip *chip = zd_rf_to_chip(rf);
  63
  64         ZD_ASSERT(mutex_is_locked(&chip->mutex));
  65         switch (type) {
  66         case RF2959_RF:
  67                 r = zd_rf_init_rf2959(rf);
  68                 break;
  69         case AL2230_RF:
  70         case AL2230S_RF:
  71                 r = zd_rf_init_al2230(rf);
  72                 break;
  73         case AL7230B_RF:
  74                 r = zd_rf_init_al7230b(rf);
  75                 break;
  76         case MAXIM_NEW_RF:
  77         case UW2453_RF:
  78                 r = zd_rf_init_uw2453(rf);
  79                 break;
  80         default:
  81                 dev_err(zd_chip_dev(chip),
  82                         "RF %s %#x is not supported\n", zd_rf_name(type), type);
  83                 rf->type = 0;
  84                 return -ENODEV;
  85         }
  86
  87         if (r)
  88                 return r;
  89
  90         rf->type = type;
  91
  92         r = zd_chip_lock_phy_regs(chip);
  93         if (r)
  94                 return r;
  95         t = rf->init_hw(rf);
  96         r = zd_chip_unlock_phy_regs(chip);
  97         if (t)
  98                 r = t;
  99         return r;
 100 }
 101
 102 int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
 103 {
 104         return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
 105 }
 106
 107 int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
 108 {
 109         int r;
 110
 111         ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
 112         if (channel < MIN_CHANNEL24)
 113                 return -EINVAL;
 114         if (channel > MAX_CHANNEL24)
 115                 return -EINVAL;
 116         dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
 117
 118         r = rf->set_channel(rf, channel);
 119         if (r >= 0)
 120                 rf->channel = channel;
 121         return r;
 122 }
 123
 124 int zd_switch_radio_on(struct zd_rf *rf)
 125 {
 126         int r, t;
 127         struct zd_chip *chip = zd_rf_to_chip(rf);
 128
 129         ZD_ASSERT(mutex_is_locked(&chip->mutex));
 130         r = zd_chip_lock_phy_regs(chip);
 131         if (r)
 132                 return r;
 133         t = rf->switch_radio_on(rf);
 134         r = zd_chip_unlock_phy_regs(chip);
 135         if (t)
 136                 r = t;
 137         return r;
 138 }
 139
 140 int zd_switch_radio_off(struct zd_rf *rf)
 141 {
 142         int r, t;
 143         struct zd_chip *chip = zd_rf_to_chip(rf);
 144
 145         /* TODO: move phy regs handling to zd_chip */
 146         ZD_ASSERT(mutex_is_locked(&chip->mutex));
 147         r = zd_chip_lock_phy_regs(chip);
 148         if (r)
 149                 return r;
 150         t = rf->switch_radio_off(rf);
 151         r = zd_chip_unlock_phy_regs(chip);
 152         if (t)
 153                 r = t;
 154         return r;
 155 }
 156
 157 int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
 158 {
 159         if (!rf->patch_6m_band_edge)
 160                 return 0;
 161
 162         return rf->patch_6m_band_edge(rf, channel);
 163 }
 164
 165 int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
 166 {
 167         return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
 168 }
 169