zydas/zd1211rw/zd_rf.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /* ZD1211 USB-WLAN driver for Linux
0003  *
0004  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
0005  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
0006  */
0007
0008 #include <linux/errno.h>
0009 #include <linux/string.h>
0010
0011 #include "zd_def.h"
0012 #include "zd_rf.h"
0013 #include "zd_mac.h"
0014 #include "zd_chip.h"
0015
0016 static const char * const rfs[] = {
0017     [0]     = "unknown RF0",
0018     [1]     = "unknown RF1",
0019     [UW2451_RF] = "UW2451_RF",
0020     [UCHIP_RF]  = "UCHIP_RF",
0021     [AL2230_RF] = "AL2230_RF",
0022     [AL7230B_RF]    = "AL7230B_RF",
0023     [THETA_RF]  = "THETA_RF",
0024     [AL2210_RF] = "AL2210_RF",
0025     [MAXIM_NEW_RF]  = "MAXIM_NEW_RF",
0026     [UW2453_RF] = "UW2453_RF",
0027     [AL2230S_RF]    = "AL2230S_RF",
0028     [RALINK_RF] = "RALINK_RF",
0029     [INTERSIL_RF]   = "INTERSIL_RF",
0030     [RF2959_RF] = "RF2959_RF",
0031     [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
0032     [PHILIPS_RF]    = "PHILIPS_RF",
0033 };
0034
0035 const char *zd_rf_name(u8 type)
0036 {
0037     if (type & 0xf0)
0038         type = 0;
0039     return rfs[type];
0040 }
0041
0042 void zd_rf_init(struct zd_rf *rf)
0043 {
0044     memset(rf, 0, sizeof(*rf));
0045
0046     /* default to update channel integration, as almost all RF's do want
0047      * this */
0048     rf->update_channel_int = 1;
0049 }
0050
0051 void zd_rf_clear(struct zd_rf *rf)
0052 {
0053     if (rf->clear)
0054         rf->clear(rf);
0055     ZD_MEMCLEAR(rf, sizeof(*rf));
0056 }
0057
0058 int zd_rf_init_hw(struct zd_rf *rf, u8 type)
0059 {
0060     int r = 0;
0061     int t;
0062     struct zd_chip *chip = zd_rf_to_chip(rf);
0063
0064     ZD_ASSERT(mutex_is_locked(&chip->mutex));
0065     switch (type) {
0066     case RF2959_RF:
0067         r = zd_rf_init_rf2959(rf);
0068         break;
0069     case AL2230_RF:
0070     case AL2230S_RF:
0071         r = zd_rf_init_al2230(rf);
0072         break;
0073     case AL7230B_RF:
0074         r = zd_rf_init_al7230b(rf);
0075         break;
0076     case MAXIM_NEW_RF:
0077     case UW2453_RF:
0078         r = zd_rf_init_uw2453(rf);
0079         break;
0080     default:
0081         dev_err(zd_chip_dev(chip),
0082             "RF %s %#x is not supported\n", zd_rf_name(type), type);
0083         rf->type = 0;
0084         return -ENODEV;
0085     }
0086
0087     if (r)
0088         return r;
0089
0090     rf->type = type;
0091
0092     r = zd_chip_lock_phy_regs(chip);
0093     if (r)
0094         return r;
0095     t = rf->init_hw(rf);
0096     r = zd_chip_unlock_phy_regs(chip);
0097     if (t)
0098         r = t;
0099     return r;
0100 }
0101
0102 int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
0103 {
0104     return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
0105 }
0106
0107 int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
0108 {
0109     int r;
0110
0111     ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
0112     if (channel < MIN_CHANNEL24)
0113         return -EINVAL;
0114     if (channel > MAX_CHANNEL24)
0115         return -EINVAL;
0116     dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
0117
0118     r = rf->set_channel(rf, channel);
0119     if (r >= 0)
0120         rf->channel = channel;
0121     return r;
0122 }
0123
0124 int zd_switch_radio_on(struct zd_rf *rf)
0125 {
0126     int r, t;
0127     struct zd_chip *chip = zd_rf_to_chip(rf);
0128
0129     ZD_ASSERT(mutex_is_locked(&chip->mutex));
0130     r = zd_chip_lock_phy_regs(chip);
0131     if (r)
0132         return r;
0133     t = rf->switch_radio_on(rf);
0134     r = zd_chip_unlock_phy_regs(chip);
0135     if (t)
0136         r = t;
0137     return r;
0138 }
0139
0140 int zd_switch_radio_off(struct zd_rf *rf)
0141 {
0142     int r, t;
0143     struct zd_chip *chip = zd_rf_to_chip(rf);
0144
0145     /* TODO: move phy regs handling to zd_chip */
0146     ZD_ASSERT(mutex_is_locked(&chip->mutex));
0147     r = zd_chip_lock_phy_regs(chip);
0148     if (r)
0149         return r;
0150     t = rf->switch_radio_off(rf);
0151     r = zd_chip_unlock_phy_regs(chip);
0152     if (t)
0153         r = t;
0154     return r;
0155 }
0156
0157 int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
0158 {
0159     if (!rf->patch_6m_band_edge)
0160         return 0;
0161
0162     return rf->patch_6m_band_edge(rf, channel);
0163 }
0164
0165 int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
0166 {
0167     return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
0168 }
0169