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 
29 static 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 
zd_rf_name(u8 type)48 const char *zd_rf_name(u8 type)
49 {
50 	if (type & 0xf0)
51 		type = 0;
52 	return rfs[type];
53 }
54 
zd_rf_init(struct zd_rf * rf)55 void 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 
zd_rf_clear(struct zd_rf * rf)64 void zd_rf_clear(struct zd_rf *rf)
65 {
66 	if (rf->clear)
67 		rf->clear(rf);
68 	ZD_MEMCLEAR(rf, sizeof(*rf));
69 }
70 
zd_rf_init_hw(struct zd_rf * rf,u8 type)71 int 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 
zd_rf_scnprint_id(struct zd_rf * rf,char * buffer,size_t size)115 int 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 
zd_rf_set_channel(struct zd_rf * rf,u8 channel)120 int 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 
zd_switch_radio_on(struct zd_rf * rf)137 int 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 
zd_switch_radio_off(struct zd_rf * rf)153 int 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 
zd_rf_patch_6m_band_edge(struct zd_rf * rf,u8 channel)170 int 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 
zd_rf_generic_patch_6m(struct zd_rf * rf,u8 channel)178 int 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