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 if (!name) 56 return -ENOMEM; 57 58 hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy, 59 mt7921_hwmon_groups); 60 return PTR_ERR_OR_ZERO(hwmon); 61 } 62 63 static void 64 mt7921_regd_channel_update(struct wiphy *wiphy, struct mt792x_dev *dev) 65 { 66 #define IS_UNII_INVALID(idx, sfreq, efreq) \ 67 (!(dev->phy.clc_chan_conf & BIT(idx)) && (cfreq) >= (sfreq) && (cfreq) <= (efreq)) 68 struct ieee80211_supported_band *sband; 69 struct mt76_dev *mdev = &dev->mt76; 70 struct device_node *np, *band_np; 71 struct ieee80211_channel *ch; 72 int i, cfreq; 73 74 np = mt76_find_power_limits_node(mdev); 75 76 sband = wiphy->bands[NL80211_BAND_5GHZ]; 77 band_np = np ? of_get_child_by_name(np, "txpower-5g") : NULL; 78 for (i = 0; i < sband->n_channels; i++) { 79 ch = &sband->channels[i]; 80 cfreq = ch->center_freq; 81 82 if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) { 83 ch->flags |= IEEE80211_CHAN_DISABLED; 84 continue; 85 } 86 87 /* UNII-4 */ 88 if (IS_UNII_INVALID(0, 5845, 5925)) 89 ch->flags |= IEEE80211_CHAN_DISABLED; 90 } 91 92 sband = wiphy->bands[NL80211_BAND_6GHZ]; 93 if (!sband) 94 return; 95 96 band_np = np ? of_get_child_by_name(np, "txpower-6g") : NULL; 97 for (i = 0; i < sband->n_channels; i++) { 98 ch = &sband->channels[i]; 99 cfreq = ch->center_freq; 100 101 if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) { 102 ch->flags |= IEEE80211_CHAN_DISABLED; 103 continue; 104 } 105 106 /* UNII-5/6/7/8 */ 107 if (IS_UNII_INVALID(1, 5925, 6425) || 108 IS_UNII_INVALID(2, 6425, 6525) || 109 IS_UNII_INVALID(3, 6525, 6875) || 110 IS_UNII_INVALID(4, 6875, 7125)) 111 ch->flags |= IEEE80211_CHAN_DISABLED; 112 } 113 } 114 115 void mt7921_regd_update(struct mt792x_dev *dev) 116 { 117 struct mt76_dev *mdev = &dev->mt76; 118 struct ieee80211_hw *hw = mdev->hw; 119 struct wiphy *wiphy = hw->wiphy; 120 121 mt7921_mcu_set_clc(dev, mdev->alpha2, dev->country_ie_env); 122 mt7921_regd_channel_update(wiphy, dev); 123 mt76_connac_mcu_set_channel_domain(hw->priv); 124 mt7921_set_tx_sar_pwr(hw, NULL); 125 } 126 EXPORT_SYMBOL_GPL(mt7921_regd_update); 127 128 static void 129 mt7921_regd_notifier(struct wiphy *wiphy, 130 struct regulatory_request *request) 131 { 132 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 133 struct mt792x_dev *dev = mt792x_hw_dev(hw); 134 struct mt76_connac_pm *pm = &dev->pm; 135 136 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2)); 137 dev->mt76.region = request->dfs_region; 138 dev->country_ie_env = request->country_ie_env; 139 140 if (request->initiator == NL80211_REGDOM_SET_BY_USER) { 141 if (dev->mt76.alpha2[0] == '0' && dev->mt76.alpha2[1] == '0') 142 wiphy->regulatory_flags &= ~REGULATORY_COUNTRY_IE_IGNORE; 143 else 144 wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_IGNORE; 145 } 146 147 if (pm->suspended) 148 return; 149 150 dev->regd_in_progress = true; 151 152 mt792x_mutex_acquire(dev); 153 mt7921_regd_update(dev); 154 mt792x_mutex_release(dev); 155 156 dev->regd_in_progress = false; 157 wake_up(&dev->wait); 158 } 159 160 int mt7921_mac_init(struct mt792x_dev *dev) 161 { 162 int i; 163 164 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); 165 /* enable hardware de-agg */ 166 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); 167 /* enable hardware rx header translation */ 168 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN); 169 170 for (i = 0; i < MT792x_WTBL_SIZE; i++) 171 mt7921_mac_wtbl_update(dev, i, 172 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 173 for (i = 0; i < 2; i++) 174 mt792x_mac_init_band(dev, i); 175 176 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0); 177 } 178 EXPORT_SYMBOL_GPL(mt7921_mac_init); 179 180 static int __mt7921_init_hardware(struct mt792x_dev *dev) 181 { 182 int ret; 183 184 /* force firmware operation mode into normal state, 185 * which should be set before firmware download stage. 186 */ 187 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 188 ret = mt792x_mcu_init(dev); 189 if (ret) 190 goto out; 191 192 ret = mt76_eeprom_override(&dev->mphy); 193 if (ret) 194 goto out; 195 196 ret = mt7921_mcu_set_eeprom(dev); 197 if (ret) 198 goto out; 199 200 ret = mt7921_mac_init(dev); 201 out: 202 return ret; 203 } 204 205 static int mt7921_init_hardware(struct mt792x_dev *dev) 206 { 207 int ret, i; 208 209 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 210 211 for (i = 0; i < MT792x_MCU_INIT_RETRY_COUNT; i++) { 212 ret = __mt7921_init_hardware(dev); 213 if (!ret) 214 break; 215 216 mt792x_init_reset(dev); 217 } 218 219 if (i == MT792x_MCU_INIT_RETRY_COUNT) { 220 dev_err(dev->mt76.dev, "hardware init failed\n"); 221 return ret; 222 } 223 224 return 0; 225 } 226 227 static void mt7921_init_work(struct work_struct *work) 228 { 229 struct mt792x_dev *dev = container_of(work, struct mt792x_dev, 230 init_work); 231 int ret; 232 233 ret = mt7921_init_hardware(dev); 234 if (ret) 235 return; 236 237 mt76_set_stream_caps(&dev->mphy, true); 238 mt7921_set_stream_he_caps(&dev->phy); 239 mt792x_config_mac_addr_list(dev); 240 241 ret = mt76_register_device(&dev->mt76, true, mt76_rates, 242 ARRAY_SIZE(mt76_rates)); 243 if (ret) { 244 dev_err(dev->mt76.dev, "register device failed\n"); 245 return; 246 } 247 248 ret = mt7921_init_debugfs(dev); 249 if (ret) { 250 dev_err(dev->mt76.dev, "register debugfs failed\n"); 251 return; 252 } 253 254 ret = mt7921_thermal_init(&dev->phy); 255 if (ret) { 256 dev_err(dev->mt76.dev, "thermal init failed\n"); 257 return; 258 } 259 260 /* we support chip reset now */ 261 dev->hw_init_done = true; 262 263 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable); 264 } 265 266 int mt7921_register_device(struct mt792x_dev *dev) 267 { 268 struct ieee80211_hw *hw = mt76_hw(dev); 269 int ret; 270 271 dev->phy.dev = dev; 272 dev->phy.mt76 = &dev->mt76.phy; 273 dev->mt76.phy.priv = &dev->phy; 274 dev->mt76.tx_worker.fn = mt792x_tx_worker; 275 276 INIT_DELAYED_WORK(&dev->pm.ps_work, mt792x_pm_power_save_work); 277 INIT_WORK(&dev->pm.wake_work, mt792x_pm_wake_work); 278 spin_lock_init(&dev->pm.wake.lock); 279 mutex_init(&dev->pm.mutex); 280 init_waitqueue_head(&dev->pm.wait); 281 init_waitqueue_head(&dev->wait); 282 if (mt76_is_sdio(&dev->mt76)) 283 init_waitqueue_head(&dev->mt76.sdio.wait); 284 spin_lock_init(&dev->pm.txq_lock); 285 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt792x_mac_work); 286 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work); 287 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work); 288 #if IS_ENABLED(CONFIG_IPV6) 289 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work); 290 skb_queue_head_init(&dev->ipv6_ns_list); 291 #endif 292 skb_queue_head_init(&dev->phy.scan_event_list); 293 skb_queue_head_init(&dev->coredump.msg_list); 294 295 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work); 296 INIT_WORK(&dev->init_work, mt7921_init_work); 297 298 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work); 299 timer_setup(&dev->phy.roc_timer, mt792x_roc_timer, 0); 300 init_waitqueue_head(&dev->phy.roc_wait); 301 302 dev->pm.idle_timeout = MT792x_PM_TIMEOUT; 303 dev->pm.stats.last_wake_event = jiffies; 304 dev->pm.stats.last_doze_event = jiffies; 305 if (!mt76_is_usb(&dev->mt76)) { 306 dev->pm.enable_user = true; 307 dev->pm.enable = true; 308 dev->pm.ds_enable_user = true; 309 dev->pm.ds_enable = true; 310 } 311 312 if (!mt76_is_mmio(&dev->mt76)) 313 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 314 315 mt792x_init_acpi_sar(dev); 316 317 ret = mt792x_init_wcid(dev); 318 if (ret) 319 return ret; 320 321 ret = mt792x_init_wiphy(hw); 322 if (ret) 323 return ret; 324 325 hw->wiphy->reg_notifier = mt7921_regd_notifier; 326 dev->mphy.sband_2g.sband.ht_cap.cap |= 327 IEEE80211_HT_CAP_LDPC_CODING | 328 IEEE80211_HT_CAP_MAX_AMSDU; 329 dev->mphy.sband_5g.sband.ht_cap.cap |= 330 IEEE80211_HT_CAP_LDPC_CODING | 331 IEEE80211_HT_CAP_MAX_AMSDU; 332 dev->mphy.sband_5g.sband.vht_cap.cap |= 333 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | 334 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | 335 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 336 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 337 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 338 if (is_mt7922(&dev->mt76)) 339 dev->mphy.sband_5g.sband.vht_cap.cap |= 340 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 341 IEEE80211_VHT_CAP_SHORT_GI_160; 342 343 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask; 344 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask; 345 346 queue_work(system_wq, &dev->init_work); 347 348 return 0; 349 } 350 EXPORT_SYMBOL_GPL(mt7921_register_device); 351