// SPDX-License-Identifier: GPL-2.0-or-later
/* ZD1211 USB-WLAN driver for Linux
 *
 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
 */

#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);
}