Release 4.11 drivers/net/wireless/mediatek/mt7601u/init.c
/*
* (c) Copyright 2002-2010, Ralink Technology, Inc.
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "mt7601u.h"
#include "eeprom.h"
#include "trace.h"
#include "mcu.h"
#include "initvals.h"
static void
mt7601u_set_wlan_state(struct mt7601u_dev *dev, u32 val, bool enable)
{
int i;
/* Note: we don't turn off WLAN_CLK because that makes the device
* not respond properly on the probe path.
* In case anyone (PSM?) wants to use this function we can
* bring the clock stuff back and fixup the probe path.
*/
if (enable)
val |= (MT_WLAN_FUN_CTRL_WLAN_EN |
MT_WLAN_FUN_CTRL_WLAN_CLK_EN);
else
val &= ~(MT_WLAN_FUN_CTRL_WLAN_EN);
mt7601u_wr(dev, MT_WLAN_FUN_CTRL, val);
udelay(20);
if (enable) {
set_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state);
} else {
clear_bit(MT7601U_STATE_WLAN_RUNNING, &dev->state);
return;
}
for (i = 200; i; i--) {
val = mt7601u_rr(dev, MT_CMB_CTRL);
if (val & MT_CMB_CTRL_XTAL_RDY && val & MT_CMB_CTRL_PLL_LD)
break;
udelay(20);
}
/* Note: vendor driver tries to disable/enable wlan here and retry
* but the code which does it is so buggy it must have never
* triggered, so don't bother.
*/
if (!i)
dev_err(dev->dev, "Error: PLL and XTAL check failed!\n");
}
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static void mt7601u_chip_onoff(struct mt7601u_dev *dev, bool enable, bool reset)
{
u32 val;
mutex_lock(&dev->hw_atomic_mutex);
val = mt7601u_rr(dev, MT_WLAN_FUN_CTRL);
if (reset) {
val |= MT_WLAN_FUN_CTRL_GPIO_OUT_EN;
val &= ~MT_WLAN_FUN_CTRL_FRC_WL_ANT_SEL;
if (val & MT_WLAN_FUN_CTRL_WLAN_EN) {
val |= (MT_WLAN_FUN_CTRL_WLAN_RESET |
MT_WLAN_FUN_CTRL_WLAN_RESET_RF);
mt7601u_wr(dev, MT_WLAN_FUN_CTRL, val);
udelay(20);
val &= ~(MT_WLAN_FUN_CTRL_WLAN_RESET |
MT_WLAN_FUN_CTRL_WLAN_RESET_RF);
}
}
mt7601u_wr(dev, MT_WLAN_FUN_CTRL, val);
udelay(20);
mt7601u_set_wlan_state(dev, val, enable);
mutex_unlock(&dev->hw_atomic_mutex);
}
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static void mt7601u_reset_csr_bbp(struct mt7601u_dev *dev)
{
mt7601u_wr(dev, MT_MAC_SYS_CTRL, (MT_MAC_SYS_CTRL_RESET_CSR |
MT_MAC_SYS_CTRL_RESET_BBP));
mt7601u_wr(dev, MT_USB_DMA_CFG, 0);
msleep(1);
mt7601u_wr(dev, MT_MAC_SYS_CTRL, 0);
}
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static void mt7601u_init_usb_dma(struct mt7601u_dev *dev)
{
u32 val;
val = FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, MT_USB_AGGR_TIMEOUT) |
FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_LMT,
MT_USB_AGGR_SIZE_LIMIT) |
MT_USB_DMA_CFG_RX_BULK_EN |
MT_USB_DMA_CFG_TX_BULK_EN;
if (dev->in_max_packet == 512)
val |= MT_USB_DMA_CFG_RX_BULK_AGG_EN;
mt7601u_wr(dev, MT_USB_DMA_CFG, val);
val |= MT_USB_DMA_CFG_UDMA_RX_WL_DROP;
mt7601u_wr(dev, MT_USB_DMA_CFG, val);
val &= ~MT_USB_DMA_CFG_UDMA_RX_WL_DROP;
mt7601u_wr(dev, MT_USB_DMA_CFG, val);
}
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static int mt7601u_init_bbp(struct mt7601u_dev *dev)
{
int ret;
ret = mt7601u_wait_bbp_ready(dev);
if (ret)
return ret;
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP, bbp_common_vals,
ARRAY_SIZE(bbp_common_vals));
if (ret)
return ret;
return mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_BBP, bbp_chip_vals,
ARRAY_SIZE(bbp_chip_vals));
}
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static void
mt76_init_beacon_offsets(struct mt7601u_dev *dev)
{
u16 base = MT_BEACON_BASE;
u32 regs[4] = {};
int i;
for (i = 0; i < 16; i++) {
u16 addr = dev->beacon_offsets[i];
regs[i / 4] |= ((addr - base) / 64) << (8 * (i % 4));
}
for (i = 0; i < 4; i++)
mt7601u_wr(dev, MT_BCN_OFFSET(i), regs[i]);
}
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static int mt7601u_write_mac_initvals(struct mt7601u_dev *dev)
{
int ret;
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_WLAN, mac_common_vals,
ARRAY_SIZE(mac_common_vals));
if (ret)
return ret;
ret = mt7601u_write_reg_pairs(dev, MT_MCU_MEMMAP_WLAN,
mac_chip_vals, ARRAY_SIZE(mac_chip_vals));
if (ret)
return ret;
mt76_init_beacon_offsets(dev);
mt7601u_wr(dev, MT_AUX_CLK_CFG, 0);
return 0;
}
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static int mt7601u_init_wcid_mem(struct mt7601u_dev *dev)
{
u32 *vals;
int i, ret;
vals = kmalloc(sizeof(*vals) * N_WCIDS * 2, GFP_KERNEL);
if (!vals)
return -ENOMEM;
for (i = 0; i < N_WCIDS; i++) {
vals[i * 2] = 0xffffffff;
vals[i * 2 + 1] = 0x00ffffff;
}
ret = mt7601u_burst_write_regs(dev, MT_WCID_ADDR_BASE,
vals, N_WCIDS * 2);
kfree(vals);
return ret;
}
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static int mt7601u_init_key_mem(struct mt7601u_dev *dev)
{
u32 vals[4] = {};
return mt7601u_burst_write_regs(dev, MT_SKEY_MODE_BASE_0,
vals, ARRAY_SIZE(vals));
}
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static int mt7601u_init_wcid_attr_mem(struct mt7601u_dev *dev)
{
u32 *vals;
int i, ret;
vals = kmalloc(sizeof(*vals) * N_WCIDS * 2, GFP_KERNEL);
if (!vals)
return -ENOMEM;
for (i = 0; i < N_WCIDS * 2; i++)
vals[i] = 1;
ret = mt7601u_burst_write_regs(dev, MT_WCID_ATTR_BASE,
vals, N_WCIDS * 2);
kfree(vals);
return ret;
}
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static void mt7601u_reset_counters(struct mt7601u_dev *dev)
{
mt7601u_rr(dev, MT_RX_STA_CNT0);
mt7601u_rr(dev, MT_RX_STA_CNT1);
mt7601u_rr(dev, MT_RX_STA_CNT2);
mt7601u_rr(dev, MT_TX_STA_CNT0);
mt7601u_rr(dev, MT_TX_STA_CNT1);
mt7601u_rr(dev, MT_TX_STA_CNT2);
}
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int mt7601u_mac_start(struct mt7601u_dev *dev)
{
mt7601u_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_TX);
if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 200000))
return -ETIMEDOUT;
dev->rxfilter = MT_RX_FILTR_CFG_CRC_ERR |
MT_RX_FILTR_CFG_PHY_ERR | MT_RX_FILTR_CFG_PROMISC |
MT_RX_FILTR_CFG_VER_ERR | MT_RX_FILTR_CFG_DUP |
MT_RX_FILTR_CFG_CFACK | MT_RX_FILTR_CFG_CFEND |
MT_RX_FILTR_CFG_ACK | MT_RX_FILTR_CFG_CTS |
MT_RX_FILTR_CFG_RTS | MT_RX_FILTR_CFG_PSPOLL |
MT_RX_FILTR_CFG_BA | MT_RX_FILTR_CFG_CTRL_RSV;
mt7601u_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
mt7601u_wr(dev, MT_MAC_SYS_CTRL,
MT_MAC_SYS_CTRL_ENABLE_TX | MT_MAC_SYS_CTRL_ENABLE_RX);
if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 50))
return -ETIMEDOUT;
return 0;
}
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static void mt7601u_mac_stop_hw(struct mt7601u_dev *dev)
{
int i, ok;
if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
return;
mt76_clear(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_TIMER_EN |
MT_BEACON_TIME_CFG_SYNC_MODE | MT_BEACON_TIME_CFG_TBTT_EN |
MT_BEACON_TIME_CFG_BEACON_TX);
if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
dev_warn(dev->dev, "Warning: TX DMA did not stop!\n");
/* Page count on TxQ */
i = 200;
while (i-- && ((mt76_rr(dev, 0x0438) & 0xffffffff) ||
(mt76_rr(dev, 0x0a30) & 0x000000ff) ||
(mt76_rr(dev, 0x0a34) & 0x00ff00ff)))
msleep(10);
if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_TX, 0, 1000))
dev_warn(dev->dev, "Warning: MAC TX did not stop!\n");
mt76_clear(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_RX |
MT_MAC_SYS_CTRL_ENABLE_TX);
/* Page count on RxQ */
ok = 0;
i = 200;
while (i--) {
if (!(mt76_rr(dev, MT_RXQ_STA) & 0x00ff0000) &&
!mt76_rr(dev, 0x0a30) &&
!mt76_rr(dev, 0x0a34)) {
if (ok++ > 5)
break;
continue;
}
msleep(1);
}
if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_RX, 0, 1000))
dev_warn(dev->dev, "Warning: MAC RX did not stop!\n");
if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
dev_warn(dev->dev, "Warning: RX DMA did not stop!\n");
}
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void mt7601u_mac_stop(struct mt7601u_dev *dev)
{
mt7601u_mac_stop_hw(dev);
flush_delayed_work(&dev->stat_work);
cancel_delayed_work_sync(&dev->stat_work);
}
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static void mt7601u_stop_hardware(struct mt7601u_dev *dev)
{
mt7601u_chip_onoff(dev, false, false);
}
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int mt7601u_init_hardware(struct mt7601u_dev *dev)
{
static const u16 beacon_offsets[16] = {
/* 512 byte per beacon */
0xc000, 0xc200, 0xc400, 0xc600,
0xc800, 0xca00, 0xcc00, 0xce00,
0xd000, 0xd200, 0xd400, 0xd600,
0xd800, 0xda00, 0xdc00, 0xde00
};
int ret;
dev->beacon_offsets = beacon_offsets;
mt7601u_chip_onoff(dev, true, false);
ret = mt7601u_wait_asic_ready(dev);
if (ret)
goto err;
ret = mt7601u_mcu_init(dev);
if (ret)
goto err;
if (!mt76_poll_msec(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 100)) {
ret = -EIO;
goto err;
}
/* Wait for ASIC ready after FW load. */
ret = mt7601u_wait_asic_ready(dev);
if (ret)
goto err;
mt7601u_reset_csr_bbp(dev);
mt7601u_init_usb_dma(dev);
ret = mt7601u_mcu_cmd_init(dev);
if (ret)
goto err;
ret = mt7601u_dma_init(dev);
if (ret)
goto err_mcu;
ret = mt7601u_write_mac_initvals(dev);
if (ret)
goto err_rx;
if (!mt76_poll_msec(dev, MT_MAC_STATUS,
MT_MAC_STATUS_TX | MT_MAC_STATUS_RX, 0, 100)) {
ret = -EIO;
goto err_rx;
}
ret = mt7601u_init_bbp(dev);
if (ret)
goto err_rx;
ret = mt7601u_init_wcid_mem(dev);
if (ret)
goto err_rx;
ret = mt7601u_init_key_mem(dev);
if (ret)
goto err_rx;
ret = mt7601u_init_wcid_attr_mem(dev);
if (ret)
goto err_rx;
mt76_clear(dev, MT_BEACON_TIME_CFG, (MT_BEACON_TIME_CFG_TIMER_EN |
MT_BEACON_TIME_CFG_SYNC_MODE |
MT_BEACON_TIME_CFG_TBTT_EN |
MT_BEACON_TIME_CFG_BEACON_TX));
mt7601u_reset_counters(dev);
mt7601u_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
mt7601u_wr(dev, MT_TXOP_CTRL_CFG,
FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
ret = mt7601u_eeprom_init(dev);
if (ret)
goto err_rx;
ret = mt7601u_phy_init(dev);
if (ret)
goto err_rx;
mt7601u_set_rx_path(dev, 0);
mt7601u_set_tx_dac(dev, 0);
mt7601u_mac_set_ctrlch(dev, false);
mt7601u_bbp_set_ctrlch(dev, false);
mt7601u_bbp_set_bw(dev, MT_BW_20);
return 0;
err_rx:
mt7601u_dma_cleanup(dev);
err_mcu:
mt7601u_mcu_cmd_deinit(dev);
err:
mt7601u_chip_onoff(dev, false, false);
return ret;
}
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| Total | 426 | 100.00% | 2 | 100.00% |
void mt7601u_cleanup(struct mt7601u_dev *dev)
{
if (!test_and_clear_bit(MT7601U_STATE_INITIALIZED, &dev->state))
return;
mt7601u_stop_hardware(dev);
mt7601u_dma_cleanup(dev);
mt7601u_mcu_cmd_deinit(dev);
}
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struct mt7601u_dev *mt7601u_alloc_device(struct device *pdev)
{
struct ieee80211_hw *hw;
struct mt7601u_dev *dev;
hw = ieee80211_alloc_hw(sizeof(*dev), &mt7601u_ops);
if (!hw)
return NULL;
dev = hw->priv;
dev->dev = pdev;
dev->hw = hw;
mutex_init(&dev->vendor_req_mutex);
mutex_init(&dev->reg_atomic_mutex);
mutex_init(&dev->hw_atomic_mutex);
mutex_init(&dev->mutex);
spin_lock_init(&dev->tx_lock);
spin_lock_init(&dev->rx_lock);
spin_lock_init(&dev->lock);
spin_lock_init(&dev->mac_lock);
spin_lock_init(&dev->con_mon_lock);
atomic_set(&dev->avg_ampdu_len, 1);
skb_queue_head_init(&dev->tx_skb_done);
dev->stat_wq = alloc_workqueue("mt7601u", WQ_UNBOUND, 0);
if (!dev->stat_wq) {
ieee80211_free_hw(hw);
return NULL;
}
return dev;
}
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#define CHAN2G(_idx, _freq) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_idx), \
.max_power = 30, \
}
static const struct ieee80211_channel mt76_channels_2ghz[] = {
CHAN2G(1, 2412),
CHAN2G(2, 2417),
CHAN2G(3, 2422),
CHAN2G(4, 2427),
CHAN2G(5, 2432),
CHAN2G(6, 2437),
CHAN2G(7, 2442),
CHAN2G(8, 2447),
CHAN2G(9, 2452),
CHAN2G(10, 2457),
CHAN2G(11, 2462),
CHAN2G(12, 2467),
CHAN2G(13, 2472),
CHAN2G(14, 2484),
};
#define CCK_RATE(_idx, _rate) { \
.bitrate = _rate, \
.flags = IEEE80211_RATE_SHORT_PREAMBLE, \
.hw_value = (MT_PHY_TYPE_CCK << 8) | _idx, \
.hw_value_short = (MT_PHY_TYPE_CCK << 8) | (8 + _idx), \
}
#define OFDM_RATE(_idx, _rate) { \
.bitrate = _rate, \
.hw_value = (MT_PHY_TYPE_OFDM << 8) | _idx, \
.hw_value_short = (MT_PHY_TYPE_OFDM << 8) | _idx, \
}
static struct ieee80211_rate mt76_rates[] = {
CCK_RATE(0, 10),
CCK_RATE(1, 20),
CCK_RATE(2, 55),
CCK_RATE(3, 110),
OFDM_RATE(0, 60),
OFDM_RATE(1, 90),
OFDM_RATE(2, 120),
OFDM_RATE(3, 180),
OFDM_RATE(4, 240),
OFDM_RATE(5, 360),
OFDM_RATE(6, 480),
OFDM_RATE(7, 540),
};
static int
mt76_init_sband(struct mt7601u_dev *dev, struct ieee80211_supported_band *sband,
const struct ieee80211_channel *chan, int n_chan,
struct ieee80211_rate *rates, int n_rates)
{
struct ieee80211_sta_ht_cap *ht_cap;
void *chanlist;
int size;
size = n_chan * sizeof(*chan);
chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
if (!chanlist)
return -ENOMEM;
sband->channels = chanlist;
sband->n_channels = n_chan;
sband->bitrates = rates;
sband->n_bitrates = n_rates;
ht_cap = &sband->ht_cap;
ht_cap->ht_supported = true;
ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_GRN_FLD |
IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40 |
(1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
ht_cap->mcs.rx_mask[0] = 0xff;
ht_cap->mcs.rx_mask[4] = 0x1;
ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_2;
dev->chandef.chan = &sband->channels[0];
return 0;
}
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static int
mt76_init_sband_2g(struct mt7601u_dev *dev)
{
dev->sband_2g = devm_kzalloc(dev->dev, sizeof(*dev->sband_2g),
GFP_KERNEL);
dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = dev->sband_2g;
WARN_ON(dev->ee->reg.start - 1 + dev->ee->reg.num >
ARRAY_SIZE(mt76_channels_2ghz));
return mt76_init_sband(dev, dev->sband_2g,
&mt76_channels_2ghz[dev->ee->reg.start - 1],
dev->ee->reg.num,
mt76_rates, ARRAY_SIZE(mt76_rates));
}
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int mt7601u_register_device(struct mt7601u_dev *dev)
{
struct ieee80211_hw *hw = dev->hw;
struct wiphy *wiphy = hw->wiphy;
int ret;
/* Reserve WCID 0 for mcast - thanks to this APs WCID will go to
* entry no. 1 like it does in the vendor driver.
*/
dev->wcid_mask[0] |= 1;
/* init fake wcid for monitor interfaces */
dev->mon_wcid = devm_kmalloc(dev->dev, sizeof(*dev->mon_wcid),
GFP_KERNEL);
if (!dev->mon_wcid)
return -ENOMEM;
dev->mon_wcid->idx = 0xff;
dev->mon_wcid->hw_key_idx = -1;
SET_IEEE80211_DEV(hw, dev->dev);
hw->queues = 4;
ieee80211_hw_set(hw, SIGNAL_DBM);
ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
hw->max_rates = 1;
hw->max_report_rates = 7;
hw->max_rate_tries = 1;
hw->sta_data_size = sizeof(struct mt76_sta);
hw->vif_data_size = sizeof(struct mt76_vif);
SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
ret = mt76_init_sband_2g(dev);
if (ret)
return ret;
INIT_DELAYED_WORK(&dev->mac_work, mt7601u_mac_work);
INIT_DELAYED_WORK(&dev->stat_work, mt7601u_tx_stat);
ret = ieee80211_register_hw(hw);
if (ret)
return ret;
mt7601u_init_debugfs(dev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 226 | 87.26% | 1 | 50.00% |
| Johannes Berg | 33 | 12.74% | 1 | 50.00% |
| Total | 259 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 2767 | 98.36% | 5 | 62.50% |
| Johannes Berg | 35 | 1.24% | 2 | 25.00% |
| Anthony Romano | 11 | 0.39% | 1 | 12.50% |
| Total | 2813 | 100.00% | 8 | 100.00% |
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