zd_rf.c

Go to the documentation of this file.

/* ZD1211 USB-WLAN driver for Linux
 *
 * Copyright (C) 2005-2007 Ulrich Kunitz <[email protected]>
 * Copyright (C) 2006-2007 Daniel Drake <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/errno.h>
#include <linux/string.h>

#include "zd_def.h"
#include "zd_rf.h"
#include "zd_mac.h"
#include "zd_chip.h"

static const char * const rfs[] = {
    [0]     = "unknown RF0",
    [1]     = "unknown RF1",
    [UW2451_RF] = "UW2451_RF",
    [UCHIP_RF]  = "UCHIP_RF",
    [AL2230_RF] = "AL2230_RF",
    [AL7230B_RF]    = "AL7230B_RF",
    [THETA_RF]  = "THETA_RF",
    [AL2210_RF] = "AL2210_RF",
    [MAXIM_NEW_RF]  = "MAXIM_NEW_RF",
    [UW2453_RF] = "UW2453_RF",
    [AL2230S_RF]    = "AL2230S_RF",
    [RALINK_RF] = "RALINK_RF",
    [INTERSIL_RF]   = "INTERSIL_RF",
    [RF2959_RF] = "RF2959_RF",
    [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
    [PHILIPS_RF]    = "PHILIPS_RF",
};

const char *zd_rf_name(u8 type)
{
    if (type & 0xf0)
        type = 0;
    return rfs[type];
}

void zd_rf_init(struct zd_rf *rf)
{
    memset(rf, 0, sizeof(*rf));

    /* default to update channel integration, as almost all RF's do want
     * this */
    rf->update_channel_int = 1;
}

void zd_rf_clear(struct zd_rf *rf)
{
    if (rf->clear)
        rf->clear(rf);
    ZD_MEMCLEAR(rf, sizeof(*rf));
}

int zd_rf_init_hw(struct zd_rf *rf, u8 type)
{
    int r = 0;
    int t;
    struct zd_chip *chip = zd_rf_to_chip(rf);

    ZD_ASSERT(mutex_is_locked(&chip->mutex));
    switch (type) {
    case RF2959_RF:
        r = zd_rf_init_rf2959(rf);
        break;
    case AL2230_RF:
    case AL2230S_RF:
        r = zd_rf_init_al2230(rf);
        break;
    case AL7230B_RF:
        r = zd_rf_init_al7230b(rf);
        break;
    case MAXIM_NEW_RF:
    case UW2453_RF:
        r = zd_rf_init_uw2453(rf);
        break;
    default:
        dev_err(zd_chip_dev(chip),
            "RF %s %#x is not supported\n", zd_rf_name(type), type);
        rf->type = 0;
        return -ENODEV;
    }

    if (r)
        return r;

    rf->type = type;

    r = zd_chip_lock_phy_regs(chip);
    if (r)
        return r;
    t = rf->init_hw(rf);
    r = zd_chip_unlock_phy_regs(chip);
    if (t)
        r = t;
    return r;
}

int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
{
    return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
}

int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
{
    int r;

    ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
    if (channel < MIN_CHANNEL24)
        return -EINVAL;
    if (channel > MAX_CHANNEL24)
        return -EINVAL;
    dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);

    r = rf->set_channel(rf, channel);
    if (r >= 0)
        rf->channel = channel;
    return r;
}

int zd_switch_radio_on(struct zd_rf *rf)
{
    int r, t;
    struct zd_chip *chip = zd_rf_to_chip(rf);

    ZD_ASSERT(mutex_is_locked(&chip->mutex));
    r = zd_chip_lock_phy_regs(chip);
    if (r)
        return r;
    t = rf->switch_radio_on(rf);
    r = zd_chip_unlock_phy_regs(chip);
    if (t)
        r = t;
    return r;
}

int zd_switch_radio_off(struct zd_rf *rf)
{
    int r, t;
    struct zd_chip *chip = zd_rf_to_chip(rf);

    /* TODO: move phy regs handling to zd_chip */
    ZD_ASSERT(mutex_is_locked(&chip->mutex));
    r = zd_chip_lock_phy_regs(chip);
    if (r)
        return r;
    t = rf->switch_radio_off(rf);
    r = zd_chip_unlock_phy_regs(chip);
    if (t)
        r = t;
    return r;
}

int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
{
    if (!rf->patch_6m_band_edge)
        return 0;

    return rf->patch_6m_band_edge(rf, channel);
}

int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
{
    return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
}