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
mt7921_thermal_temp_show(struct device * dev,struct device_attribute * attr,char * buf)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
mt7921_thermal_init(struct mt792x_phy * phy)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
mt7921_regd_channel_update(struct wiphy * wiphy,struct mt792x_dev * dev)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
mt7921_regd_update(struct mt792x_dev * dev)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
mt7921_regd_notifier(struct wiphy * wiphy,struct regulatory_request * request)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
mt7921_mac_init(struct mt792x_dev * dev)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
__mt7921_init_hardware(struct mt792x_dev * dev)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 mt76_eeprom_override(&dev->mphy);
193
194 ret = mt7921_mcu_set_eeprom(dev);
195 if (ret)
196 goto out;
197
198 ret = mt7921_mac_init(dev);
199 out:
200 return ret;
201 }
202
mt7921_init_hardware(struct mt792x_dev * dev)203 static int mt7921_init_hardware(struct mt792x_dev *dev)
204 {
205 int ret, i;
206
207 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
208
209 for (i = 0; i < MT792x_MCU_INIT_RETRY_COUNT; i++) {
210 ret = __mt7921_init_hardware(dev);
211 if (!ret)
212 break;
213
214 mt792x_init_reset(dev);
215 }
216
217 if (i == MT792x_MCU_INIT_RETRY_COUNT) {
218 dev_err(dev->mt76.dev, "hardware init failed\n");
219 return ret;
220 }
221
222 return 0;
223 }
224
mt7921_init_work(struct work_struct * work)225 static void mt7921_init_work(struct work_struct *work)
226 {
227 struct mt792x_dev *dev = container_of(work, struct mt792x_dev,
228 init_work);
229 int ret;
230
231 ret = mt7921_init_hardware(dev);
232 if (ret)
233 return;
234
235 mt76_set_stream_caps(&dev->mphy, true);
236 mt7921_set_stream_he_caps(&dev->phy);
237 mt792x_config_mac_addr_list(dev);
238
239 ret = mt76_register_device(&dev->mt76, true, mt76_rates,
240 ARRAY_SIZE(mt76_rates));
241 if (ret) {
242 dev_err(dev->mt76.dev, "register device failed\n");
243 return;
244 }
245
246 ret = mt7921_init_debugfs(dev);
247 if (ret) {
248 dev_err(dev->mt76.dev, "register debugfs failed\n");
249 return;
250 }
251
252 ret = mt7921_thermal_init(&dev->phy);
253 if (ret) {
254 dev_err(dev->mt76.dev, "thermal init failed\n");
255 return;
256 }
257
258 /* we support chip reset now */
259 dev->hw_init_done = true;
260
261 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable);
262 }
263
mt7921_register_device(struct mt792x_dev * dev)264 int mt7921_register_device(struct mt792x_dev *dev)
265 {
266 struct ieee80211_hw *hw = mt76_hw(dev);
267 int ret;
268
269 dev->phy.dev = dev;
270 dev->phy.mt76 = &dev->mt76.phy;
271 dev->mt76.phy.priv = &dev->phy;
272 dev->mt76.tx_worker.fn = mt792x_tx_worker;
273
274 INIT_DELAYED_WORK(&dev->pm.ps_work, mt792x_pm_power_save_work);
275 INIT_WORK(&dev->pm.wake_work, mt792x_pm_wake_work);
276 spin_lock_init(&dev->pm.wake.lock);
277 mutex_init(&dev->pm.mutex);
278 init_waitqueue_head(&dev->pm.wait);
279 init_waitqueue_head(&dev->wait);
280 if (mt76_is_sdio(&dev->mt76))
281 init_waitqueue_head(&dev->mt76.sdio.wait);
282 spin_lock_init(&dev->pm.txq_lock);
283 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt792x_mac_work);
284 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
285 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
286 #if IS_ENABLED(CONFIG_IPV6)
287 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work);
288 skb_queue_head_init(&dev->ipv6_ns_list);
289 #endif
290 skb_queue_head_init(&dev->phy.scan_event_list);
291 skb_queue_head_init(&dev->coredump.msg_list);
292
293 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
294 INIT_WORK(&dev->init_work, mt7921_init_work);
295
296 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work);
297 timer_setup(&dev->phy.roc_timer, mt792x_roc_timer, 0);
298 init_waitqueue_head(&dev->phy.roc_wait);
299
300 dev->pm.idle_timeout = MT792x_PM_TIMEOUT;
301 dev->pm.stats.last_wake_event = jiffies;
302 dev->pm.stats.last_doze_event = jiffies;
303 if (!mt76_is_usb(&dev->mt76)) {
304 dev->pm.enable_user = true;
305 dev->pm.enable = true;
306 dev->pm.ds_enable_user = true;
307 dev->pm.ds_enable = true;
308 }
309
310 if (!mt76_is_mmio(&dev->mt76))
311 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;
312
313 mt792x_init_acpi_sar(dev);
314
315 ret = mt792x_init_wcid(dev);
316 if (ret)
317 return ret;
318
319 ret = mt792x_init_wiphy(hw);
320 if (ret)
321 return ret;
322
323 hw->wiphy->reg_notifier = mt7921_regd_notifier;
324 dev->mphy.sband_2g.sband.ht_cap.cap |=
325 IEEE80211_HT_CAP_LDPC_CODING |
326 IEEE80211_HT_CAP_MAX_AMSDU;
327 dev->mphy.sband_5g.sband.ht_cap.cap |=
328 IEEE80211_HT_CAP_LDPC_CODING |
329 IEEE80211_HT_CAP_MAX_AMSDU;
330 dev->mphy.sband_5g.sband.vht_cap.cap |=
331 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
332 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
333 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
334 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
335 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
336 if (is_mt7922(&dev->mt76))
337 dev->mphy.sband_5g.sband.vht_cap.cap |=
338 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
339 IEEE80211_VHT_CAP_SHORT_GI_160;
340
341 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
342 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
343
344 queue_work(system_wq, &dev->init_work);
345
346 return 0;
347 }
348 EXPORT_SYMBOL_GPL(mt7921_register_device);
349