LXR linux/drivers/net/wireless/zydas/zd1211rw/zd

   1/* ZD1211 USB-WLAN driver for Linux
   2 *
   3 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
   4 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#include <linux/errno.h>
  21#include <linux/string.h>
  22
  23#include "zd_def.h"
  24#include "zd_rf.h"
  25#include "zd_mac.h"
  26#include "zd_chip.h"
  27
  28static const char * const rfs[] = {
  29        [0]             = "unknown RF0",
  30        [1]             = "unknown RF1",
  31        [UW2451_RF]     = "UW2451_RF",
  32        [UCHIP_RF]      = "UCHIP_RF",
  33        [AL2230_RF]     = "AL2230_RF",
  34        [AL7230B_RF]    = "AL7230B_RF",
  35        [THETA_RF]      = "THETA_RF",
  36        [AL2210_RF]     = "AL2210_RF",
  37        [MAXIM_NEW_RF]  = "MAXIM_NEW_RF",
  38        [UW2453_RF]     = "UW2453_RF",
  39        [AL2230S_RF]    = "AL2230S_RF",
  40        [RALINK_RF]     = "RALINK_RF",
  41        [INTERSIL_RF]   = "INTERSIL_RF",
  42        [RF2959_RF]     = "RF2959_RF",
  43        [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
  44        [PHILIPS_RF]    = "PHILIPS_RF",
  45};
  46
  47const char *zd_rf_name(u8 type)
  48{
  49        if (type & 0xf0)
  50                type = 0;
  51        return rfs[type];
  52}
  53
  54void zd_rf_init(struct zd_rf *rf)
  55{
  56        memset(rf, 0, sizeof(*rf));
  57
  58        /* default to update channel integration, as almost all RF's do want
  59         * this */
  60        rf->update_channel_int = 1;
  61}
  62
  63void zd_rf_clear(struct zd_rf *rf)
  64{
  65        if (rf->clear)
  66                rf->clear(rf);
  67        ZD_MEMCLEAR(rf, sizeof(*rf));
  68}
  69
  70int zd_rf_init_hw(struct zd_rf *rf, u8 type)
  71{
  72        int r = 0;
  73        int t;
  74        struct zd_chip *chip = zd_rf_to_chip(rf);
  75
  76        ZD_ASSERT(mutex_is_locked(&chip->mutex));
  77        switch (type) {
  78        case RF2959_RF:
  79                r = zd_rf_init_rf2959(rf);
  80                break;
  81        case AL2230_RF:
  82        case AL2230S_RF:
  83                r = zd_rf_init_al2230(rf);
  84                break;
  85        case AL7230B_RF:
  86                r = zd_rf_init_al7230b(rf);
  87                break;
  88        case MAXIM_NEW_RF:
  89        case UW2453_RF:
  90                r = zd_rf_init_uw2453(rf);
  91                break;
  92        default:
  93                dev_err(zd_chip_dev(chip),
  94                        "RF %s %#x is not supported\n", zd_rf_name(type), type);
  95                rf->type = 0;
  96                return -ENODEV;
  97        }
  98
  99        if (r)
 100                return r;
 101
 102        rf->type = type;
 103
 104        r = zd_chip_lock_phy_regs(chip);
 105        if (r)
 106                return r;
 107        t = rf->init_hw(rf);
 108        r = zd_chip_unlock_phy_regs(chip);
 109        if (t)
 110                r = t;
 111        return r;
 112}
 113
 114int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
 115{
 116        return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
 117}
 118
 119int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
 120{
 121        int r;
 122
 123        ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
 124        if (channel < MIN_CHANNEL24)
 125                return -EINVAL;
 126        if (channel > MAX_CHANNEL24)
 127                return -EINVAL;
 128        dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
 129
 130        r = rf->set_channel(rf, channel);
 131        if (r >= 0)
 132                rf->channel = channel;
 133        return r;
 134}
 135
 136int zd_switch_radio_on(struct zd_rf *rf)
 137{
 138        int r, t;
 139        struct zd_chip *chip = zd_rf_to_chip(rf);
 140
 141        ZD_ASSERT(mutex_is_locked(&chip->mutex));
 142        r = zd_chip_lock_phy_regs(chip);
 143        if (r)
 144                return r;
 145        t = rf->switch_radio_on(rf);
 146        r = zd_chip_unlock_phy_regs(chip);
 147        if (t)
 148                r = t;
 149        return r;
 150}
 151
 152int zd_switch_radio_off(struct zd_rf *rf)
 153{
 154        int r, t;
 155        struct zd_chip *chip = zd_rf_to_chip(rf);
 156
 157        /* TODO: move phy regs handling to zd_chip */
 158        ZD_ASSERT(mutex_is_locked(&chip->mutex));
 159        r = zd_chip_lock_phy_regs(chip);
 160        if (r)
 161                return r;
 162        t = rf->switch_radio_off(rf);
 163        r = zd_chip_unlock_phy_regs(chip);
 164        if (t)
 165                r = t;
 166        return r;
 167}
 168
 169int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
 170{
 171        if (!rf->patch_6m_band_edge)
 172                return 0;
 173
 174        return rf->patch_6m_band_edge(rf, channel);
 175}
 176
 177int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
 178{
 179        return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
 180}
 181
 182