LXR linux/drivers/net/wireless/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, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 */
  20
  21#include <linux/errno.h>
  22#include <linux/string.h>
  23
  24#include "zd_def.h"
  25#include "zd_rf.h"
  26#include "zd_mac.h"
  27#include "zd_chip.h"
  28
  29static const char * const rfs[] = {
  30        [0]             = "unknown RF0",
  31        [1]             = "unknown RF1",
  32        [UW2451_RF]     = "UW2451_RF",
  33        [UCHIP_RF]      = "UCHIP_RF",
  34        [AL2230_RF]     = "AL2230_RF",
  35        [AL7230B_RF]    = "AL7230B_RF",
  36        [THETA_RF]      = "THETA_RF",
  37        [AL2210_RF]     = "AL2210_RF",
  38        [MAXIM_NEW_RF]  = "MAXIM_NEW_RF",
  39        [UW2453_RF]     = "UW2453_RF",
  40        [AL2230S_RF]    = "AL2230S_RF",
  41        [RALINK_RF]     = "RALINK_RF",
  42        [INTERSIL_RF]   = "INTERSIL_RF",
  43        [RF2959_RF]     = "RF2959_RF",
  44        [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
  45        [PHILIPS_RF]    = "PHILIPS_RF",
  46};
  47
  48const char *zd_rf_name(u8 type)
  49{
  50        if (type & 0xf0)
  51                type = 0;
  52        return rfs[type];
  53}
  54
  55void zd_rf_init(struct zd_rf *rf)
  56{
  57        memset(rf, 0, sizeof(*rf));
  58
  59        /* default to update channel integration, as almost all RF's do want
  60         * this */
  61        rf->update_channel_int = 1;
  62}
  63
  64void zd_rf_clear(struct zd_rf *rf)
  65{
  66        if (rf->clear)
  67                rf->clear(rf);
  68        ZD_MEMCLEAR(rf, sizeof(*rf));
  69}
  70
  71int zd_rf_init_hw(struct zd_rf *rf, u8 type)
  72{
  73        int r = 0;
  74        int t;
  75        struct zd_chip *chip = zd_rf_to_chip(rf);
  76
  77        ZD_ASSERT(mutex_is_locked(&chip->mutex));
  78        switch (type) {
  79        case RF2959_RF:
  80                r = zd_rf_init_rf2959(rf);
  81                break;
  82        case AL2230_RF:
  83        case AL2230S_RF:
  84                r = zd_rf_init_al2230(rf);
  85                break;
  86        case AL7230B_RF:
  87                r = zd_rf_init_al7230b(rf);
  88                break;
  89        case MAXIM_NEW_RF:
  90        case UW2453_RF:
  91                r = zd_rf_init_uw2453(rf);
  92                break;
  93        default:
  94                dev_err(zd_chip_dev(chip),
  95                        "RF %s %#x is not supported\n", zd_rf_name(type), type);
  96                rf->type = 0;
  97                return -ENODEV;
  98        }
  99
 100        if (r)
 101                return r;
 102
 103        rf->type = type;
 104
 105        r = zd_chip_lock_phy_regs(chip);
 106        if (r)
 107                return r;
 108        t = rf->init_hw(rf);
 109        r = zd_chip_unlock_phy_regs(chip);
 110        if (t)
 111                r = t;
 112        return r;
 113}
 114
 115int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
 116{
 117        return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
 118}
 119
 120int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
 121{
 122        int r;
 123
 124        ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
 125        if (channel < MIN_CHANNEL24)
 126                return -EINVAL;
 127        if (channel > MAX_CHANNEL24)
 128                return -EINVAL;
 129        dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
 130
 131        r = rf->set_channel(rf, channel);
 132        if (r >= 0)
 133                rf->channel = channel;
 134        return r;
 135}
 136
 137int zd_switch_radio_on(struct zd_rf *rf)
 138{
 139        int r, t;
 140        struct zd_chip *chip = zd_rf_to_chip(rf);
 141
 142        ZD_ASSERT(mutex_is_locked(&chip->mutex));
 143        r = zd_chip_lock_phy_regs(chip);
 144        if (r)
 145                return r;
 146        t = rf->switch_radio_on(rf);
 147        r = zd_chip_unlock_phy_regs(chip);
 148        if (t)
 149                r = t;
 150        return r;
 151}
 152
 153int zd_switch_radio_off(struct zd_rf *rf)
 154{
 155        int r, t;
 156        struct zd_chip *chip = zd_rf_to_chip(rf);
 157
 158        /* TODO: move phy regs handling to zd_chip */
 159        ZD_ASSERT(mutex_is_locked(&chip->mutex));
 160        r = zd_chip_lock_phy_regs(chip);
 161        if (r)
 162                return r;
 163        t = rf->switch_radio_off(rf);
 164        r = zd_chip_unlock_phy_regs(chip);
 165        if (t)
 166                r = t;
 167        return r;
 168}
 169
 170int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
 171{
 172        if (!rf->patch_6m_band_edge)
 173                return 0;
 174
 175        return rf->patch_6m_band_edge(rf, channel);
 176}
 177
 178int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
 179{
 180        return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
 181}
 182
 183