1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. */ 3 4 #include <linux/etherdevice.h> 5 #include <linux/hwmon.h> 6 #include <linux/hwmon-sysfs.h> 7 #include <linux/thermal.h> 8 #include <linux/firmware.h> 9 #include "mt7921.h" 10 #include "../mt76_connac2_mac.h" 11 #include "mcu.h" 12 13 static ssize_t mt7921_thermal_temp_show(struct device *dev, 14 struct device_attribute *attr, 15 char *buf) 16 { 17 switch (to_sensor_dev_attr(attr)->index) { 18 case 0: { 19 struct mt792x_phy *phy = dev_get_drvdata(dev); 20 struct mt792x_dev *mdev = phy->dev; 21 int temperature; 22 23 mt792x_mutex_acquire(mdev); 24 temperature = mt7921_mcu_get_temperature(phy); 25 mt792x_mutex_release(mdev); 26 27 if (temperature < 0) 28 return temperature; 29 /* display in millidegree Celsius */ 30 return sprintf(buf, "%u\n", temperature * 1000); 31 } 32 default: 33 return -EINVAL; 34 } 35 } 36 static SENSOR_DEVICE_ATTR_RO(temp1_input, mt7921_thermal_temp, 0); 37 38 static struct attribute *mt7921_hwmon_attrs[] = { 39 &sensor_dev_attr_temp1_input.dev_attr.attr, 40 NULL, 41 }; 42 ATTRIBUTE_GROUPS(mt7921_hwmon); 43 44 static int mt7921_thermal_init(struct mt792x_phy *phy) 45 { 46 struct wiphy *wiphy = phy->mt76->hw->wiphy; 47 struct device *hwmon; 48 const char *name; 49 50 if (!IS_REACHABLE(CONFIG_HWMON)) 51 return 0; 52 53 name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7921_%s", 54 wiphy_name(wiphy)); 55 56 hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy, 57 mt7921_hwmon_groups); 58 return PTR_ERR_OR_ZERO(hwmon); 59 } 60 61 static void 62 mt7921_regd_channel_update(struct wiphy *wiphy, struct mt792x_dev *dev) 63 { 64 #define IS_UNII_INVALID(idx, sfreq, efreq) \ 65 (!(dev->phy.clc_chan_conf & BIT(idx)) && (cfreq) >= (sfreq) && (cfreq) <= (efreq)) 66 struct ieee80211_supported_band *sband; 67 struct mt76_dev *mdev = &dev->mt76; 68 struct device_node *np, *band_np; 69 struct ieee80211_channel *ch; 70 int i, cfreq; 71 72 np = mt76_find_power_limits_node(mdev); 73 74 sband = wiphy->bands[NL80211_BAND_5GHZ]; 75 band_np = np ? of_get_child_by_name(np, "txpower-5g") : NULL; 76 for (i = 0; i < sband->n_channels; i++) { 77 ch = &sband->channels[i]; 78 cfreq = ch->center_freq; 79 80 if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) { 81 ch->flags |= IEEE80211_CHAN_DISABLED; 82 continue; 83 } 84 85 /* UNII-4 */ 86 if (IS_UNII_INVALID(0, 5850, 5925)) 87 ch->flags |= IEEE80211_CHAN_DISABLED; 88 } 89 90 sband = wiphy->bands[NL80211_BAND_6GHZ]; 91 band_np = np ? of_get_child_by_name(np, "txpower-6g") : NULL; 92 for (i = 0; i < sband->n_channels; i++) { 93 ch = &sband->channels[i]; 94 cfreq = ch->center_freq; 95 96 if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) { 97 ch->flags |= IEEE80211_CHAN_DISABLED; 98 continue; 99 } 100 101 /* UNII-5/6/7/8 */ 102 if (IS_UNII_INVALID(1, 5925, 6425) || 103 IS_UNII_INVALID(2, 6425, 6525) || 104 IS_UNII_INVALID(3, 6525, 6875) || 105 IS_UNII_INVALID(4, 6875, 7125)) 106 ch->flags |= IEEE80211_CHAN_DISABLED; 107 } 108 } 109 110 static void 111 mt7921_regd_notifier(struct wiphy *wiphy, 112 struct regulatory_request *request) 113 { 114 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 115 struct mt792x_dev *dev = mt792x_hw_dev(hw); 116 117 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2)); 118 dev->mt76.region = request->dfs_region; 119 dev->country_ie_env = request->country_ie_env; 120 121 mt792x_mutex_acquire(dev); 122 mt7921_mcu_set_clc(dev, request->alpha2, request->country_ie_env); 123 mt76_connac_mcu_set_channel_domain(hw->priv); 124 mt7921_set_tx_sar_pwr(hw, NULL); 125 mt792x_mutex_release(dev); 126 127 mt7921_regd_channel_update(wiphy, dev); 128 } 129 130 int mt7921_mac_init(struct mt792x_dev *dev) 131 { 132 int i; 133 134 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); 135 /* enable hardware de-agg */ 136 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); 137 /* enable hardware rx header translation */ 138 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN); 139 140 for (i = 0; i < MT792x_WTBL_SIZE; i++) 141 mt7921_mac_wtbl_update(dev, i, 142 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 143 for (i = 0; i < 2; i++) 144 mt792x_mac_init_band(dev, i); 145 146 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0); 147 } 148 EXPORT_SYMBOL_GPL(mt7921_mac_init); 149 150 static int __mt7921_init_hardware(struct mt792x_dev *dev) 151 { 152 int ret; 153 154 /* force firmware operation mode into normal state, 155 * which should be set before firmware download stage. 156 */ 157 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 158 ret = mt792x_mcu_init(dev); 159 if (ret) 160 goto out; 161 162 mt76_eeprom_override(&dev->mphy); 163 164 ret = mt7921_mcu_set_eeprom(dev); 165 if (ret) 166 goto out; 167 168 ret = mt7921_mac_init(dev); 169 out: 170 return ret; 171 } 172 173 static int mt7921_init_hardware(struct mt792x_dev *dev) 174 { 175 int ret, i; 176 177 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 178 179 for (i = 0; i < MT792x_MCU_INIT_RETRY_COUNT; i++) { 180 ret = __mt7921_init_hardware(dev); 181 if (!ret) 182 break; 183 184 mt792x_init_reset(dev); 185 } 186 187 if (i == MT792x_MCU_INIT_RETRY_COUNT) { 188 dev_err(dev->mt76.dev, "hardware init failed\n"); 189 return ret; 190 } 191 192 return 0; 193 } 194 195 static void mt7921_init_work(struct work_struct *work) 196 { 197 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 198 init_work); 199 int ret; 200 201 ret = mt7921_init_hardware(dev); 202 if (ret) 203 return; 204 205 mt76_set_stream_caps(&dev->mphy, true); 206 mt7921_set_stream_he_caps(&dev->phy); 207 208 ret = mt76_register_device(&dev->mt76, true, mt76_rates, 209 ARRAY_SIZE(mt76_rates)); 210 if (ret) { 211 dev_err(dev->mt76.dev, "register device failed\n"); 212 return; 213 } 214 215 ret = mt7921_init_debugfs(dev); 216 if (ret) { 217 dev_err(dev->mt76.dev, "register debugfs failed\n"); 218 return; 219 } 220 221 ret = mt7921_thermal_init(&dev->phy); 222 if (ret) { 223 dev_err(dev->mt76.dev, "thermal init failed\n"); 224 return; 225 } 226 227 /* we support chip reset now */ 228 dev->hw_init_done = true; 229 230 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable); 231 } 232 233 int mt7921_register_device(struct mt792x_dev *dev) 234 { 235 struct ieee80211_hw *hw = mt76_hw(dev); 236 int ret; 237 238 dev->phy.dev = dev; 239 dev->phy.mt76 = &dev->mt76.phy; 240 dev->mt76.phy.priv = &dev->phy; 241 dev->mt76.tx_worker.fn = mt792x_tx_worker; 242 243 INIT_DELAYED_WORK(&dev->pm.ps_work, mt792x_pm_power_save_work); 244 INIT_WORK(&dev->pm.wake_work, mt792x_pm_wake_work); 245 spin_lock_init(&dev->pm.wake.lock); 246 mutex_init(&dev->pm.mutex); 247 init_waitqueue_head(&dev->pm.wait); 248 if (mt76_is_sdio(&dev->mt76)) 249 init_waitqueue_head(&dev->mt76.sdio.wait); 250 spin_lock_init(&dev->pm.txq_lock); 251 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt792x_mac_work); 252 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work); 253 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work); 254 #if IS_ENABLED(CONFIG_IPV6) 255 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work); 256 skb_queue_head_init(&dev->ipv6_ns_list); 257 #endif 258 skb_queue_head_init(&dev->phy.scan_event_list); 259 skb_queue_head_init(&dev->coredump.msg_list); 260 261 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work); 262 INIT_WORK(&dev->init_work, mt7921_init_work); 263 264 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work); 265 timer_setup(&dev->phy.roc_timer, mt792x_roc_timer, 0); 266 init_waitqueue_head(&dev->phy.roc_wait); 267 268 dev->pm.idle_timeout = MT792x_PM_TIMEOUT; 269 dev->pm.stats.last_wake_event = jiffies; 270 dev->pm.stats.last_doze_event = jiffies; 271 if (!mt76_is_usb(&dev->mt76)) { 272 dev->pm.enable_user = true; 273 dev->pm.enable = true; 274 dev->pm.ds_enable_user = true; 275 dev->pm.ds_enable = true; 276 } 277 278 if (!mt76_is_mmio(&dev->mt76)) 279 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 280 281 mt792x_init_acpi_sar(dev); 282 283 ret = mt792x_init_wcid(dev); 284 if (ret) 285 return ret; 286 287 ret = mt792x_init_wiphy(hw); 288 if (ret) 289 return ret; 290 291 hw->wiphy->reg_notifier = mt7921_regd_notifier; 292 dev->mphy.sband_2g.sband.ht_cap.cap |= 293 IEEE80211_HT_CAP_LDPC_CODING | 294 IEEE80211_HT_CAP_MAX_AMSDU; 295 dev->mphy.sband_5g.sband.ht_cap.cap |= 296 IEEE80211_HT_CAP_LDPC_CODING | 297 IEEE80211_HT_CAP_MAX_AMSDU; 298 dev->mphy.sband_5g.sband.vht_cap.cap |= 299 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | 300 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | 301 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 302 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 303 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 304 if (is_mt7922(&dev->mt76)) 305 dev->mphy.sband_5g.sband.vht_cap.cap |= 306 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 307 IEEE80211_VHT_CAP_SHORT_GI_160; 308 309 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask; 310 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask; 311 312 queue_work(system_wq, &dev->init_work); 313 314 return 0; 315 } 316 EXPORT_SYMBOL_GPL(mt7921_register_device); 317