1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
4 * All rights reserved.
5 *
6 */
7
8#include "baseband.h"
9#include "channel.h"
10#include "device.h"
11#include "rf.h"
12
13static struct ieee80211_rate vnt_rates_bg[] = {
14 { .bitrate = 10, .hw_value = RATE_1M },
15 { .bitrate = 20, .hw_value = RATE_2M },
16 { .bitrate = 55, .hw_value = RATE_5M },
17 { .bitrate = 110, .hw_value = RATE_11M },
18 { .bitrate = 60, .hw_value = RATE_6M },
19 { .bitrate = 90, .hw_value = RATE_9M },
20 { .bitrate = 120, .hw_value = RATE_12M },
21 { .bitrate = 180, .hw_value = RATE_18M },
22 { .bitrate = 240, .hw_value = RATE_24M },
23 { .bitrate = 360, .hw_value = RATE_36M },
24 { .bitrate = 480, .hw_value = RATE_48M },
25 { .bitrate = 540, .hw_value = RATE_54M },
26};
27
28static struct ieee80211_channel vnt_channels_2ghz[] = {
29 { .center_freq = 2412, .hw_value = 1 },
30 { .center_freq = 2417, .hw_value = 2 },
31 { .center_freq = 2422, .hw_value = 3 },
32 { .center_freq = 2427, .hw_value = 4 },
33 { .center_freq = 2432, .hw_value = 5 },
34 { .center_freq = 2437, .hw_value = 6 },
35 { .center_freq = 2442, .hw_value = 7 },
36 { .center_freq = 2447, .hw_value = 8 },
37 { .center_freq = 2452, .hw_value = 9 },
38 { .center_freq = 2457, .hw_value = 10 },
39 { .center_freq = 2462, .hw_value = 11 },
40 { .center_freq = 2467, .hw_value = 12 },
41 { .center_freq = 2472, .hw_value = 13 },
42 { .center_freq = 2484, .hw_value = 14 }
43};
44
45static struct ieee80211_supported_band vnt_supported_2ghz_band = {
46 .channels = vnt_channels_2ghz,
47 .n_channels = ARRAY_SIZE(vnt_channels_2ghz),
48 .bitrates = vnt_rates_bg,
49 .n_bitrates = ARRAY_SIZE(vnt_rates_bg),
50};
51
52static void vnt_init_band(struct vnt_private *priv,
53 struct ieee80211_supported_band *supported_band,
54 enum nl80211_band band)
55{
56 int i;
57
58 for (i = 0; i < supported_band->n_channels; i++) {
59 supported_band->channels[i].max_power = 0x3f;
60 supported_band->channels[i].flags =
61 IEEE80211_CHAN_NO_HT40;
62 }
63
64 priv->hw->wiphy->bands[band] = supported_band;
65}
66
67void vnt_init_bands(struct vnt_private *priv)
68{
69 vnt_init_band(priv, supported_band: &vnt_supported_2ghz_band, band: NL80211_BAND_2GHZ);
70}
71
72/**
73 * set_channel() - Set NIC media channel
74 *
75 * @priv: The adapter to be set
76 * @ch: Channel to be set
77 *
78 * Return Value: true if succeeded; false if failed.
79 *
80 */
81bool set_channel(struct vnt_private *priv, struct ieee80211_channel *ch)
82{
83 bool ret = true;
84
85 if (priv->current_ch == ch->hw_value)
86 return ret;
87
88 /* Set VGA to max sensitivity */
89 if (priv->update_bbvga &&
90 priv->bbvga_current != priv->bbvga[0]) {
91 priv->bbvga_current = priv->bbvga[0];
92
93 bb_set_vga_gain_offset(priv, by_data: priv->bbvga_current);
94 }
95
96 /* clear NAV */
97 vt6655_mac_reg_bits_on(iobase: priv->port_offset, MAC_REG_MACCR, MACCR_CLRNAV);
98
99 /* TX_PE will reserve 3 us for MAX2829 A mode only,
100 * it is for better TX throughput
101 */
102
103 priv->current_ch = ch->hw_value;
104 ret &= RFbSelectChannel(priv, rf_type: priv->rf_type,
105 byChannel: ch->hw_value);
106
107 /* Init Synthesizer Table */
108 if (priv->bEnablePSMode)
109 rf_write_wake_prog_syn(priv, rf_type: priv->rf_type, channel: ch->hw_value);
110
111 bb_software_reset(priv);
112
113 if (priv->local_id > REV_ID_VT3253_B1) {
114 unsigned long flags;
115
116 spin_lock_irqsave(&priv->lock, flags);
117
118 /* set HW default power register */
119 VT6655_MAC_SELECT_PAGE1(priv->port_offset);
120 RFbSetPower(priv, RATE_1M, uCH: priv->current_ch);
121 iowrite8(priv->cur_pwr, priv->port_offset + MAC_REG_PWRCCK);
122 RFbSetPower(priv, RATE_6M, uCH: priv->current_ch);
123 iowrite8(priv->cur_pwr, priv->port_offset + MAC_REG_PWROFDM);
124 VT6655_MAC_SELECT_PAGE0(priv->port_offset);
125
126 spin_unlock_irqrestore(lock: &priv->lock, flags);
127 }
128
129 if (priv->byBBType == BB_TYPE_11B)
130 RFbSetPower(priv, RATE_1M, uCH: priv->current_ch);
131 else
132 RFbSetPower(priv, RATE_6M, uCH: priv->current_ch);
133
134 return ret;
135}
136

source code of linux/drivers/staging/vt6655/channel.c