Merge tag 'mmc-v5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[linux-2.6-microblaze.git] / drivers / net / wireless / zydas / zd1211rw / zd_rf.c
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
35 const char *zd_rf_name(u8 type)
36 {
37         if (type & 0xf0)
38                 type = 0;
39         return rfs[type];
40 }
41
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
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
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
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
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
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
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
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
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