init.c

// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */

#include <linux/etherdevice.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/thermal.h>
#include <linux/firmware.h>
#include "mt7921.h"
#include "../mt76_connac2_mac.h"
#include "mcu.h"

#if defined(__linux__)
static ssize_t mt7921_thermal_temp_show(struct device *dev,
					struct device_attribute *attr,
					char *buf)
{
	switch (to_sensor_dev_attr(attr)->index) {
	case 0: {
		struct mt792x_phy *phy = dev_get_drvdata(dev);
		struct mt792x_dev *mdev = phy->dev;
		int temperature;

		mt792x_mutex_acquire(mdev);
		temperature = mt7921_mcu_get_temperature(phy);
		mt792x_mutex_release(mdev);

		if (temperature < 0)
			return temperature;
		/* display in millidegree Celsius */
		return sprintf(buf, "%u\n", temperature * 1000);
	}
	default:
		return -EINVAL;
	}
}
static SENSOR_DEVICE_ATTR_RO(temp1_input, mt7921_thermal_temp, 0);

static struct attribute *mt7921_hwmon_attrs[] = {
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	NULL,
};
ATTRIBUTE_GROUPS(mt7921_hwmon);

static int mt7921_thermal_init(struct mt792x_phy *phy)
{
	struct wiphy *wiphy = phy->mt76->hw->wiphy;
	struct device *hwmon;
	const char *name;

	if (!IS_REACHABLE(CONFIG_HWMON))
		return 0;

	name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7921_%s",
			      wiphy_name(wiphy));
	if (!name)
		return -ENOMEM;

	hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy,
						       mt7921_hwmon_groups);
	return PTR_ERR_OR_ZERO(hwmon);
}
#endif

static void
mt7921_regd_channel_update(struct wiphy *wiphy, struct mt792x_dev *dev)
{
#define IS_UNII_INVALID(idx, sfreq, efreq) \
	(!(dev->phy.clc_chan_conf & BIT(idx)) && (cfreq) >= (sfreq) && (cfreq) <= (efreq))
	struct ieee80211_supported_band *sband;
	struct mt76_dev *mdev = &dev->mt76;
	struct device_node *np, *band_np;
	struct ieee80211_channel *ch;
	int i, cfreq;

	np = mt76_find_power_limits_node(mdev);

	sband = wiphy->bands[NL80211_BAND_5GHZ];
#if defined(CONFIG_OF)
	band_np = np ? of_get_child_by_name(np, "txpower-5g") : NULL;
#else
	band_np = NULL;
#endif
	for (i = 0; i < sband->n_channels; i++) {
		ch = &sband->channels[i];
		cfreq = ch->center_freq;

		if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) {
			ch->flags |= IEEE80211_CHAN_DISABLED;
			continue;
		}

		/* UNII-4 */
		if (IS_UNII_INVALID(0, 5845, 5925))
			ch->flags |= IEEE80211_CHAN_DISABLED;
	}

	sband = wiphy->bands[NL80211_BAND_6GHZ];
	if (!sband)
		return;

#if defined(CONFIG_OF)
	band_np = np ? of_get_child_by_name(np, "txpower-6g") : NULL;
#else
	band_np = NULL;
#endif
	for (i = 0; i < sband->n_channels; i++) {
		ch = &sband->channels[i];
		cfreq = ch->center_freq;

		if (np && (!band_np || !mt76_find_channel_node(band_np, ch))) {
			ch->flags |= IEEE80211_CHAN_DISABLED;
			continue;
		}

		/* UNII-5/6/7/8 */
		if (IS_UNII_INVALID(1, 5925, 6425) ||
		    IS_UNII_INVALID(2, 6425, 6525) ||
		    IS_UNII_INVALID(3, 6525, 6875) ||
		    IS_UNII_INVALID(4, 6875, 7125))
			ch->flags |= IEEE80211_CHAN_DISABLED;
	}
}

void mt7921_regd_update(struct mt792x_dev *dev)
{
	struct mt76_dev *mdev = &dev->mt76;
	struct ieee80211_hw *hw = mdev->hw;
	struct wiphy *wiphy = hw->wiphy;

	mt7921_mcu_set_clc(dev, mdev->alpha2, dev->country_ie_env);
	mt7921_regd_channel_update(wiphy, dev);
	mt76_connac_mcu_set_channel_domain(hw->priv);
	mt7921_set_tx_sar_pwr(hw, NULL);
}
EXPORT_SYMBOL_GPL(mt7921_regd_update);

static void
mt7921_regd_notifier(struct wiphy *wiphy,
		     struct regulatory_request *request)
{
	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
	struct mt792x_dev *dev = mt792x_hw_dev(hw);
	struct mt76_connac_pm *pm = &dev->pm;

	memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
	dev->mt76.region = request->dfs_region;
	dev->country_ie_env = request->country_ie_env;

	if (request->initiator == NL80211_REGDOM_SET_BY_USER) {
		if (dev->mt76.alpha2[0] == '0' && dev->mt76.alpha2[1] == '0')
			wiphy->regulatory_flags &= ~REGULATORY_COUNTRY_IE_IGNORE;
		else
			wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_IGNORE;
	}

	if (pm->suspended)
		return;

	dev->regd_in_progress = true;

	mt792x_mutex_acquire(dev);
	mt7921_regd_update(dev);
	mt792x_mutex_release(dev);

	dev->regd_in_progress = false;
	wake_up(&dev->wait);
}

int mt7921_mac_init(struct mt792x_dev *dev)
{
	int i;

	mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
	/* enable hardware de-agg */
	mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
	/* enable hardware rx header translation */
	mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);

	for (i = 0; i < MT792x_WTBL_SIZE; i++)
		mt7921_mac_wtbl_update(dev, i,
				       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
	for (i = 0; i < 2; i++)
		mt792x_mac_init_band(dev, i);

	return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
}
EXPORT_SYMBOL_GPL(mt7921_mac_init);

static int __mt7921_init_hardware(struct mt792x_dev *dev)
{
	int ret;

	/* force firmware operation mode into normal state,
	 * which should be set before firmware download stage.
	 */
	mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
	ret = mt792x_mcu_init(dev);
	if (ret)
		goto out;

	mt76_eeprom_override(&dev->mphy);

	ret = mt7921_mcu_set_eeprom(dev);
	if (ret)
		goto out;

	ret = mt7921_mac_init(dev);
out:
	return ret;
}

static int mt7921_init_hardware(struct mt792x_dev *dev)
{
	int ret, i;

	set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);

	for (i = 0; i < MT792x_MCU_INIT_RETRY_COUNT; i++) {
		ret = __mt7921_init_hardware(dev);
		if (!ret)
			break;

		mt792x_init_reset(dev);
	}

	if (i == MT792x_MCU_INIT_RETRY_COUNT) {
		dev_err(dev->mt76.dev, "hardware init failed\n");
		return ret;
	}

	return 0;
}

static void mt7921_init_work(struct work_struct *work)
{
	struct mt792x_dev *dev = container_of(work, struct mt792x_dev,
					      init_work);
	int ret;

	ret = mt7921_init_hardware(dev);
	if (ret)
		return;

	mt76_set_stream_caps(&dev->mphy, true);
	mt7921_set_stream_he_caps(&dev->phy);
	mt792x_config_mac_addr_list(dev);

	ret = mt76_register_device(&dev->mt76, true, mt76_rates,
				   ARRAY_SIZE(mt76_rates));
	if (ret) {
		dev_err(dev->mt76.dev, "register device failed\n");
		return;
	}

#if !defined(__FreeBSD__) || defined(CONFIG_MT7921_DEBUGFS)
	ret = mt7921_init_debugfs(dev);
	if (ret) {
		dev_err(dev->mt76.dev, "register debugfs failed\n");
		return;
	}
#endif

#if defined(__linux__)
	ret = mt7921_thermal_init(&dev->phy);
	if (ret) {
		dev_err(dev->mt76.dev, "thermal init failed\n");
		return;
	}
#endif

	/* we support chip reset now */
	dev->hw_init_done = true;

	mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable);
}

int mt7921_register_device(struct mt792x_dev *dev)
{
	struct ieee80211_hw *hw = mt76_hw(dev);
	int ret;

	dev->phy.dev = dev;
	dev->phy.mt76 = &dev->mt76.phy;
	dev->mt76.phy.priv = &dev->phy;
	dev->mt76.tx_worker.fn = mt792x_tx_worker;

	INIT_DELAYED_WORK(&dev->pm.ps_work, mt792x_pm_power_save_work);
	INIT_WORK(&dev->pm.wake_work, mt792x_pm_wake_work);
	spin_lock_init(&dev->pm.wake.lock);
	mutex_init(&dev->pm.mutex);
	init_waitqueue_head(&dev->pm.wait);
	init_waitqueue_head(&dev->wait);
	if (mt76_is_sdio(&dev->mt76))
		init_waitqueue_head(&dev->mt76.sdio.wait);
	spin_lock_init(&dev->pm.txq_lock);
	INIT_DELAYED_WORK(&dev->mphy.mac_work, mt792x_mac_work);
	INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
	INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
#if IS_ENABLED(CONFIG_IPV6)
	INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work);
	skb_queue_head_init(&dev->ipv6_ns_list);
#endif
	skb_queue_head_init(&dev->phy.scan_event_list);
	skb_queue_head_init(&dev->coredump.msg_list);

	INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
	INIT_WORK(&dev->init_work, mt7921_init_work);

	INIT_WORK(&dev->phy.roc_work, mt7921_roc_work);
	timer_setup(&dev->phy.roc_timer, mt792x_roc_timer, 0);
	init_waitqueue_head(&dev->phy.roc_wait);

	dev->pm.idle_timeout = MT792x_PM_TIMEOUT;
	dev->pm.stats.last_wake_event = jiffies;
	dev->pm.stats.last_doze_event = jiffies;
	if (!mt76_is_usb(&dev->mt76)) {
		dev->pm.enable_user = true;
		dev->pm.enable = true;
		dev->pm.ds_enable_user = true;
		dev->pm.ds_enable = true;
	}

	if (!mt76_is_mmio(&dev->mt76))
		hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;

	mt792x_init_acpi_sar(dev);

	ret = mt792x_init_wcid(dev);
	if (ret)
		return ret;

	ret = mt792x_init_wiphy(hw);
	if (ret)
		return ret;

	hw->wiphy->reg_notifier = mt7921_regd_notifier;
	dev->mphy.sband_2g.sband.ht_cap.cap |=
			IEEE80211_HT_CAP_LDPC_CODING |
			IEEE80211_HT_CAP_MAX_AMSDU;
	dev->mphy.sband_5g.sband.ht_cap.cap |=
			IEEE80211_HT_CAP_LDPC_CODING |
			IEEE80211_HT_CAP_MAX_AMSDU;
	dev->mphy.sband_5g.sband.vht_cap.cap |=
			IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
			IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
			IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
			(3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
	if (is_mt7922(&dev->mt76))
		dev->mphy.sband_5g.sband.vht_cap.cap |=
			IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
			IEEE80211_VHT_CAP_SHORT_GI_160;

	dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
	dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;

	queue_work(system_wq, &dev->init_work);

	return 0;
}
EXPORT_SYMBOL_GPL(mt7921_register_device);