staging/vt6655/channel.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002 /*
0003  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
0004  * All rights reserved.
0005  *
0006  */
0007
0008 #include "baseband.h"
0009 #include "channel.h"
0010 #include "device.h"
0011 #include "rf.h"
0012
0013 static struct ieee80211_rate vnt_rates_bg[] = {
0014     { .bitrate = 10,  .hw_value = RATE_1M },
0015     { .bitrate = 20,  .hw_value = RATE_2M },
0016     { .bitrate = 55,  .hw_value = RATE_5M },
0017     { .bitrate = 110, .hw_value = RATE_11M },
0018     { .bitrate = 60,  .hw_value = RATE_6M },
0019     { .bitrate = 90,  .hw_value = RATE_9M },
0020     { .bitrate = 120, .hw_value = RATE_12M },
0021     { .bitrate = 180, .hw_value = RATE_18M },
0022     { .bitrate = 240, .hw_value = RATE_24M },
0023     { .bitrate = 360, .hw_value = RATE_36M },
0024     { .bitrate = 480, .hw_value = RATE_48M },
0025     { .bitrate = 540, .hw_value = RATE_54M },
0026 };
0027
0028 static struct ieee80211_channel vnt_channels_2ghz[] = {
0029     { .center_freq = 2412, .hw_value = 1 },
0030     { .center_freq = 2417, .hw_value = 2 },
0031     { .center_freq = 2422, .hw_value = 3 },
0032     { .center_freq = 2427, .hw_value = 4 },
0033     { .center_freq = 2432, .hw_value = 5 },
0034     { .center_freq = 2437, .hw_value = 6 },
0035     { .center_freq = 2442, .hw_value = 7 },
0036     { .center_freq = 2447, .hw_value = 8 },
0037     { .center_freq = 2452, .hw_value = 9 },
0038     { .center_freq = 2457, .hw_value = 10 },
0039     { .center_freq = 2462, .hw_value = 11 },
0040     { .center_freq = 2467, .hw_value = 12 },
0041     { .center_freq = 2472, .hw_value = 13 },
0042     { .center_freq = 2484, .hw_value = 14 }
0043 };
0044
0045 static struct ieee80211_supported_band vnt_supported_2ghz_band = {
0046     .channels = vnt_channels_2ghz,
0047     .n_channels = ARRAY_SIZE(vnt_channels_2ghz),
0048     .bitrates = vnt_rates_bg,
0049     .n_bitrates = ARRAY_SIZE(vnt_rates_bg),
0050 };
0051
0052 static void vnt_init_band(struct vnt_private *priv,
0053               struct ieee80211_supported_band *supported_band,
0054               enum nl80211_band band)
0055 {
0056     int i;
0057
0058     for (i = 0; i < supported_band->n_channels; i++) {
0059         supported_band->channels[i].max_power = 0x3f;
0060         supported_band->channels[i].flags =
0061             IEEE80211_CHAN_NO_HT40;
0062     }
0063
0064     priv->hw->wiphy->bands[band] = supported_band;
0065 }
0066
0067 void vnt_init_bands(struct vnt_private *priv)
0068 {
0069     vnt_init_band(priv, &vnt_supported_2ghz_band, NL80211_BAND_2GHZ);
0070 }
0071
0072 /**
0073  * set_channel() - Set NIC media channel
0074  *
0075  * @priv: The adapter to be set
0076  * @ch: Channel to be set
0077  *
0078  * Return Value: true if succeeded; false if failed.
0079  *
0080  */
0081 bool set_channel(struct vnt_private *priv, struct ieee80211_channel *ch)
0082 {
0083     bool ret = true;
0084
0085     if (priv->byCurrentCh == ch->hw_value)
0086         return ret;
0087
0088     /* Set VGA to max sensitivity */
0089     if (priv->bUpdateBBVGA &&
0090         priv->byBBVGACurrent != priv->abyBBVGA[0]) {
0091         priv->byBBVGACurrent = priv->abyBBVGA[0];
0092
0093         bb_set_vga_gain_offset(priv, priv->byBBVGACurrent);
0094     }
0095
0096     /* clear NAV */
0097     vt6655_mac_reg_bits_on(priv->port_offset, MAC_REG_MACCR, MACCR_CLRNAV);
0098
0099     /* TX_PE will reserve 3 us for MAX2829 A mode only,
0100      * it is for better TX throughput
0101      */
0102
0103     priv->byCurrentCh = ch->hw_value;
0104     ret &= RFbSelectChannel(priv, priv->byRFType,
0105                 ch->hw_value);
0106
0107     /* Init Synthesizer Table */
0108     if (priv->bEnablePSMode)
0109         rf_write_wake_prog_syn(priv, priv->byRFType, ch->hw_value);
0110
0111     bb_software_reset(priv);
0112
0113     if (priv->local_id > REV_ID_VT3253_B1) {
0114         unsigned long flags;
0115
0116         spin_lock_irqsave(&priv->lock, flags);
0117
0118         /* set HW default power register */
0119         MACvSelectPage1(priv->port_offset);
0120         RFbSetPower(priv, RATE_1M, priv->byCurrentCh);
0121         iowrite8(priv->byCurPwr, priv->port_offset + MAC_REG_PWRCCK);
0122         RFbSetPower(priv, RATE_6M, priv->byCurrentCh);
0123         iowrite8(priv->byCurPwr, priv->port_offset + MAC_REG_PWROFDM);
0124         MACvSelectPage0(priv->port_offset);
0125
0126         spin_unlock_irqrestore(&priv->lock, flags);
0127     }
0128
0129     if (priv->byBBType == BB_TYPE_11B)
0130         RFbSetPower(priv, RATE_1M, priv->byCurrentCh);
0131     else
0132         RFbSetPower(priv, RATE_6M, priv->byCurrentCh);
0133
0134     return ret;
0135 }