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
 13static 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}
 36static SENSOR_DEVICE_ATTR_RO(temp1_input, mt7921_thermal_temp, 0);
 37
 38static struct attribute *mt7921_hwmon_attrs[] = {
 39	&sensor_dev_attr_temp1_input.dev_attr.attr,
 40	NULL,
 41};
 42ATTRIBUTE_GROUPS(mt7921_hwmon);
 43
 44static 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
 61static void
 62mt7921_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	if (!sband)
 92		return;
 93
 94	band_np = np ? of_get_child_by_name(np, "txpower-6g") : NULL;
 95	for (i = 0; i < sband->n_channels; i++) {
 96		ch = &sband->channels[i];
 97		cfreq = ch->center_freq;
 98
 99		if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) {
100			ch->flags |= IEEE80211_CHAN_DISABLED;
101			continue;
102		}
103
104		/* UNII-5/6/7/8 */
105		if (IS_UNII_INVALID(1, 5925, 6425) ||
106		    IS_UNII_INVALID(2, 6425, 6525) ||
107		    IS_UNII_INVALID(3, 6525, 6875) ||
108		    IS_UNII_INVALID(4, 6875, 7125))
109			ch->flags |= IEEE80211_CHAN_DISABLED;
110	}
111}
112
113void mt7921_regd_update(struct mt792x_dev *dev)
114{
115	struct mt76_dev *mdev = &dev->mt76;
116	struct ieee80211_hw *hw = mdev->hw;
117	struct wiphy *wiphy = hw->wiphy;
118
119	mt7921_mcu_set_clc(dev, mdev->alpha2, dev->country_ie_env);
120	mt7921_regd_channel_update(wiphy, dev);
121	mt76_connac_mcu_set_channel_domain(hw->priv);
122	mt7921_set_tx_sar_pwr(hw, NULL);
123}
124EXPORT_SYMBOL_GPL(mt7921_regd_update);
125
126static void
127mt7921_regd_notifier(struct wiphy *wiphy,
128		     struct regulatory_request *request)
129{
130	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
131	struct mt792x_dev *dev = mt792x_hw_dev(hw);
132	struct mt76_connac_pm *pm = &dev->pm;
133
134	memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
135	dev->mt76.region = request->dfs_region;
136	dev->country_ie_env = request->country_ie_env;
137
138	if (pm->suspended)
139		return;
140
141	mt792x_mutex_acquire(dev);
142	mt7921_regd_update(dev);
143	mt792x_mutex_release(dev);
144}
145
146int mt7921_mac_init(struct mt792x_dev *dev)
147{
148	int i;
149
150	mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
151	/* enable hardware de-agg */
152	mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
153	/* enable hardware rx header translation */
154	mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
155
156	for (i = 0; i < MT792x_WTBL_SIZE; i++)
157		mt7921_mac_wtbl_update(dev, i,
158				       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
159	for (i = 0; i < 2; i++)
160		mt792x_mac_init_band(dev, i);
161
162	return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
163}
164EXPORT_SYMBOL_GPL(mt7921_mac_init);
165
166static int __mt7921_init_hardware(struct mt792x_dev *dev)
167{
168	int ret;
169
170	/* force firmware operation mode into normal state,
171	 * which should be set before firmware download stage.
172	 */
173	mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
174	ret = mt792x_mcu_init(dev);
175	if (ret)
176		goto out;
177
178	mt76_eeprom_override(&dev->mphy);
179
180	ret = mt7921_mcu_set_eeprom(dev);
181	if (ret)
182		goto out;
183
184	ret = mt7921_mac_init(dev);
185out:
186	return ret;
187}
188
189static int mt7921_init_hardware(struct mt792x_dev *dev)
190{
191	int ret, i;
192
193	set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
194
195	for (i = 0; i < MT792x_MCU_INIT_RETRY_COUNT; i++) {
196		ret = __mt7921_init_hardware(dev);
197		if (!ret)
198			break;
199
200		mt792x_init_reset(dev);
201	}
202
203	if (i == MT792x_MCU_INIT_RETRY_COUNT) {
204		dev_err(dev->mt76.dev, "hardware init failed\n");
205		return ret;
206	}
207
208	return 0;
209}
210
211static void mt7921_init_work(struct work_struct *work)
212{
213	struct mt792x_dev *dev = container_of(work, struct mt792x_dev,
214					      init_work);
215	int ret;
216
217	ret = mt7921_init_hardware(dev);
218	if (ret)
219		return;
220
221	mt76_set_stream_caps(&dev->mphy, true);
222	mt7921_set_stream_he_caps(&dev->phy);
223
224	ret = mt76_register_device(&dev->mt76, true, mt76_rates,
225				   ARRAY_SIZE(mt76_rates));
226	if (ret) {
227		dev_err(dev->mt76.dev, "register device failed\n");
228		return;
229	}
230
231	ret = mt7921_init_debugfs(dev);
232	if (ret) {
233		dev_err(dev->mt76.dev, "register debugfs failed\n");
234		return;
235	}
236
237	ret = mt7921_thermal_init(&dev->phy);
238	if (ret) {
239		dev_err(dev->mt76.dev, "thermal init failed\n");
240		return;
241	}
242
243	/* we support chip reset now */
244	dev->hw_init_done = true;
245
246	mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable);
247}
248
249int mt7921_register_device(struct mt792x_dev *dev)
250{
251	struct ieee80211_hw *hw = mt76_hw(dev);
252	int ret;
253
254	dev->phy.dev = dev;
255	dev->phy.mt76 = &dev->mt76.phy;
256	dev->mt76.phy.priv = &dev->phy;
257	dev->mt76.tx_worker.fn = mt792x_tx_worker;
258
259	INIT_DELAYED_WORK(&dev->pm.ps_work, mt792x_pm_power_save_work);
260	INIT_WORK(&dev->pm.wake_work, mt792x_pm_wake_work);
261	spin_lock_init(&dev->pm.wake.lock);
262	mutex_init(&dev->pm.mutex);
263	init_waitqueue_head(&dev->pm.wait);
264	if (mt76_is_sdio(&dev->mt76))
265		init_waitqueue_head(&dev->mt76.sdio.wait);
266	spin_lock_init(&dev->pm.txq_lock);
267	INIT_DELAYED_WORK(&dev->mphy.mac_work, mt792x_mac_work);
268	INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
269	INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
270#if IS_ENABLED(CONFIG_IPV6)
271	INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work);
272	skb_queue_head_init(&dev->ipv6_ns_list);
273#endif
274	skb_queue_head_init(&dev->phy.scan_event_list);
275	skb_queue_head_init(&dev->coredump.msg_list);
276
277	INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
278	INIT_WORK(&dev->init_work, mt7921_init_work);
279
280	INIT_WORK(&dev->phy.roc_work, mt7921_roc_work);
281	timer_setup(&dev->phy.roc_timer, mt792x_roc_timer, 0);
282	init_waitqueue_head(&dev->phy.roc_wait);
283
284	dev->pm.idle_timeout = MT792x_PM_TIMEOUT;
285	dev->pm.stats.last_wake_event = jiffies;
286	dev->pm.stats.last_doze_event = jiffies;
287	if (!mt76_is_usb(&dev->mt76)) {
288		dev->pm.enable_user = true;
289		dev->pm.enable = true;
290		dev->pm.ds_enable_user = true;
291		dev->pm.ds_enable = true;
292	}
293
294	if (!mt76_is_mmio(&dev->mt76))
295		hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;
296
297	mt792x_init_acpi_sar(dev);
298
299	ret = mt792x_init_wcid(dev);
300	if (ret)
301		return ret;
302
303	ret = mt792x_init_wiphy(hw);
304	if (ret)
305		return ret;
306
307	hw->wiphy->reg_notifier = mt7921_regd_notifier;
308	dev->mphy.sband_2g.sband.ht_cap.cap |=
309			IEEE80211_HT_CAP_LDPC_CODING |
310			IEEE80211_HT_CAP_MAX_AMSDU;
311	dev->mphy.sband_5g.sband.ht_cap.cap |=
312			IEEE80211_HT_CAP_LDPC_CODING |
313			IEEE80211_HT_CAP_MAX_AMSDU;
314	dev->mphy.sband_5g.sband.vht_cap.cap |=
315			IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
316			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
317			IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
318			IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
319			(3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
320	if (is_mt7922(&dev->mt76))
321		dev->mphy.sband_5g.sband.vht_cap.cap |=
322			IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
323			IEEE80211_VHT_CAP_SHORT_GI_160;
324
325	dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
326	dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
327
328	queue_work(system_wq, &dev->init_work);
329
330	return 0;
331}
332EXPORT_SYMBOL_GPL(mt7921_register_device);