1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* ZD1211 USB-WLAN driver for Linux
3  *
4  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
5  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
6  */
7 
8 #include <linux/errno.h>
9 #include <linux/string.h>
10 
11 #include "zd_def.h"
12 #include "zd_rf.h"
13 #include "zd_mac.h"
14 #include "zd_chip.h"
15 
16 static const char * const rfs[] = {
17 	[0]		= "unknown RF0",
18 	[1]		= "unknown RF1",
19 	[UW2451_RF]	= "UW2451_RF",
20 	[UCHIP_RF]	= "UCHIP_RF",
21 	[AL2230_RF]	= "AL2230_RF",
22 	[AL7230B_RF]	= "AL7230B_RF",
23 	[THETA_RF]	= "THETA_RF",
24 	[AL2210_RF]	= "AL2210_RF",
25 	[MAXIM_NEW_RF]	= "MAXIM_NEW_RF",
26 	[UW2453_RF]	= "UW2453_RF",
27 	[AL2230S_RF]	= "AL2230S_RF",
28 	[RALINK_RF]	= "RALINK_RF",
29 	[INTERSIL_RF]	= "INTERSIL_RF",
30 	[RF2959_RF]	= "RF2959_RF",
31 	[MAXIM_NEW2_RF]	= "MAXIM_NEW2_RF",
32 	[PHILIPS_RF]	= "PHILIPS_RF",
33 };
34 
zd_rf_name(u8 type)35 const char *zd_rf_name(u8 type)
36 {
37 	if (type & 0xf0)
38 		type = 0;
39 	return rfs[type];
40 }
41 
zd_rf_init(struct zd_rf * rf)42 void zd_rf_init(struct zd_rf *rf)
43 {
44 	memset(rf, 0, sizeof(*rf));
45 
46 	/* default to update channel integration, as almost all RF's do want
47 	 * this */
48 	rf->update_channel_int = 1;
49 }
50 
zd_rf_clear(struct zd_rf * rf)51 void zd_rf_clear(struct zd_rf *rf)
52 {
53 	if (rf->clear)
54 		rf->clear(rf);
55 	ZD_MEMCLEAR(rf, sizeof(*rf));
56 }
57 
zd_rf_init_hw(struct zd_rf * rf,u8 type)58 int zd_rf_init_hw(struct zd_rf *rf, u8 type)
59 {
60 	int r = 0;
61 	int t;
62 	struct zd_chip *chip = zd_rf_to_chip(rf);
63 
64 	ZD_ASSERT(mutex_is_locked(&chip->mutex));
65 	switch (type) {
66 	case RF2959_RF:
67 		r = zd_rf_init_rf2959(rf);
68 		break;
69 	case AL2230_RF:
70 	case AL2230S_RF:
71 		r = zd_rf_init_al2230(rf);
72 		break;
73 	case AL7230B_RF:
74 		r = zd_rf_init_al7230b(rf);
75 		break;
76 	case MAXIM_NEW_RF:
77 	case UW2453_RF:
78 		r = zd_rf_init_uw2453(rf);
79 		break;
80 	default:
81 		dev_err(zd_chip_dev(chip),
82 			"RF %s %#x is not supported\n", zd_rf_name(type), type);
83 		rf->type = 0;
84 		return -ENODEV;
85 	}
86 
87 	if (r)
88 		return r;
89 
90 	rf->type = type;
91 
92 	r = zd_chip_lock_phy_regs(chip);
93 	if (r)
94 		return r;
95 	t = rf->init_hw(rf);
96 	r = zd_chip_unlock_phy_regs(chip);
97 	if (t)
98 		r = t;
99 	return r;
100 }
101 
zd_rf_scnprint_id(struct zd_rf * rf,char * buffer,size_t size)102 int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
103 {
104 	return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
105 }
106 
zd_rf_set_channel(struct zd_rf * rf,u8 channel)107 int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
108 {
109 	int r;
110 
111 	ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
112 	if (channel < MIN_CHANNEL24)
113 		return -EINVAL;
114 	if (channel > MAX_CHANNEL24)
115 		return -EINVAL;
116 	dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
117 
118 	r = rf->set_channel(rf, channel);
119 	if (r >= 0)
120 		rf->channel = channel;
121 	return r;
122 }
123 
zd_switch_radio_on(struct zd_rf * rf)124 int zd_switch_radio_on(struct zd_rf *rf)
125 {
126 	int r, t;
127 	struct zd_chip *chip = zd_rf_to_chip(rf);
128 
129 	ZD_ASSERT(mutex_is_locked(&chip->mutex));
130 	r = zd_chip_lock_phy_regs(chip);
131 	if (r)
132 		return r;
133 	t = rf->switch_radio_on(rf);
134 	r = zd_chip_unlock_phy_regs(chip);
135 	if (t)
136 		r = t;
137 	return r;
138 }
139 
zd_switch_radio_off(struct zd_rf * rf)140 int zd_switch_radio_off(struct zd_rf *rf)
141 {
142 	int r, t;
143 	struct zd_chip *chip = zd_rf_to_chip(rf);
144 
145 	/* TODO: move phy regs handling to zd_chip */
146 	ZD_ASSERT(mutex_is_locked(&chip->mutex));
147 	r = zd_chip_lock_phy_regs(chip);
148 	if (r)
149 		return r;
150 	t = rf->switch_radio_off(rf);
151 	r = zd_chip_unlock_phy_regs(chip);
152 	if (t)
153 		r = t;
154 	return r;
155 }
156 
zd_rf_patch_6m_band_edge(struct zd_rf * rf,u8 channel)157 int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
158 {
159 	if (!rf->patch_6m_band_edge)
160 		return 0;
161 
162 	return rf->patch_6m_band_edge(rf, channel);
163 }
164 
zd_rf_generic_patch_6m(struct zd_rf * rf,u8 channel)165 int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
166 {
167 	return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
168 }
169 
170