Commit 3bc62aa4 authored by Ming Yen Hsieh's avatar Ming Yen Hsieh Committed by Felix Fietkau
Browse files

wifi: mt76: mt7925: add auto regdomain switch support 



Implement 802.11d-based automatic regulatory domain switching to
dynamically determine the regulatory domain at runtime.

Signed-off-by: default avatarMing Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20251031090352.1400079-6-mingyen.hsieh@mediatek.com


Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 6338709a

drivers/net/wireless/mediatek/mt76/mt7925/init.c

+0 −2
Original line number Diff line number Diff line
@@ -91,8 +91,6 @@ int mt7925_mac_init(struct mt792x_dev *dev) 


	mt7925_mac_init_basic_rates(dev);



	memzero_explicit(&dev->mt76.alpha2, sizeof(dev->mt76.alpha2));



	return 0;

}

EXPORT_SYMBOL_GPL(mt7925_mac_init);

drivers/net/wireless/mediatek/mt76/mt7925/mac.c

+2 −3
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
#include <linux/timekeeping.h>

#include "mt7925.h"

#include "../dma.h"

#include "regd.h"

#include "mac.h"

#include "mcu.h"
@@ -1329,9 +1330,7 @@ void mt7925_mac_reset_work(struct work_struct *work) 
					    mt7925_vif_connect_iter, NULL);

	mt76_connac_power_save_sched(&dev->mt76.phy, pm);



	mt792x_mutex_acquire(dev);

	mt7925_mcu_set_clc(dev, "00", ENVIRON_INDOOR);

	mt792x_mutex_release(dev);

	mt7925_regd_change(&dev->phy, "00");

}



void mt7925_coredump_work(struct work_struct *work)

drivers/net/wireless/mediatek/mt76/mt7925/main.c

+1 −22
Original line number Diff line number Diff line
@@ -1313,20 +1313,6 @@ void mt7925_mlo_pm_work(struct work_struct *work) 
					    mt7925_mlo_pm_iter, dev);

}



static bool is_valid_alpha2(const char *alpha2)

{

	if (!alpha2)

		return false;



	if (alpha2[0] == '0' && alpha2[1] == '0')

		return true;



	if (isalpha(alpha2[0]) && isalpha(alpha2[1]))

		return true;



	return false;

}



void mt7925_scan_work(struct work_struct *work)

{

	struct mt792x_phy *phy;
@@ -1335,7 +1321,6 @@ void mt7925_scan_work(struct work_struct *work) 
						scan_work.work);



	while (true) {

		struct mt76_dev *mdev = &phy->dev->mt76;

		struct sk_buff *skb;

		struct tlv *tlv;

		int tlv_len;
@@ -1366,13 +1351,7 @@ void mt7925_scan_work(struct work_struct *work) 
			case UNI_EVENT_SCAN_DONE_CHNLINFO:

				evt = (struct mt7925_mcu_scan_chinfo_event *)tlv->data;



				if (!is_valid_alpha2(evt->alpha2))

					break;



				if (mdev->alpha2[0] != '0' && mdev->alpha2[1] != '0')

					break;



				mt7925_mcu_set_clc(phy->dev, evt->alpha2, ENVIRON_INDOOR);

				mt7925_regd_change(phy, evt->alpha2);



				break;

			case UNI_EVENT_SCAN_DONE_NLO:

drivers/net/wireless/mediatek/mt76/mt7925/mcu.c

+1 −0
Original line number Diff line number Diff line
@@ -755,6 +755,7 @@ static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name) 
		}

	}



	ret = mt7925_regd_init(phy);

out:

	release_firmware(fw);

drivers/net/wireless/mediatek/mt76/mt7925/regd.c

+61 −0
Original line number Diff line number Diff line
@@ -197,3 +197,64 @@ void mt7925_regd_notifier(struct wiphy *wiphy, struct regulatory_request *req) 
			       req->country_ie_env);

	return;

}



static bool

mt7925_regd_is_valid_alpha2(const char *alpha2)

{

	if (!alpha2)

		return false;



	if (alpha2[0] == '0' && alpha2[1] == '0')

		return true;



	if (isalpha(alpha2[0]) && isalpha(alpha2[1]))

		return true;



	return false;

}



int mt7925_regd_change(struct mt792x_phy *phy, char *alpha2)

{

	struct wiphy *wiphy = phy->mt76->hw->wiphy;

	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);

	struct mt792x_dev *dev = mt792x_hw_dev(hw);

	struct mt76_dev *mdev = &dev->mt76;



	if (dev->hw_full_reset)

		return 0;



	if (!mt7925_regd_is_valid_alpha2(alpha2) ||

	    !mt7925_regd_clc_supported(dev))

		return -EINVAL;



	if (mdev->alpha2[0] != '0' && mdev->alpha2[1] != '0')

		return 0;



	/* do not need to update the same country twice */

	if (!memcmp(alpha2, mdev->alpha2, 2))

		return 0;



	if (phy->chip_cap & MT792x_CHIP_CAP_11D_EN) {

		return regulatory_hint(wiphy, alpha2);

	} else {

		return mt7925_mcu_set_clc(dev, alpha2, ENVIRON_INDOOR);

	}

}

EXPORT_SYMBOL_GPL(mt7925_regd_change);



int mt7925_regd_init(struct mt792x_phy *phy)

{

	struct wiphy *wiphy = phy->mt76->hw->wiphy;

	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);

	struct mt792x_dev *dev = mt792x_hw_dev(hw);

	struct mt76_dev *mdev = &dev->mt76;



	if (phy->chip_cap & MT792x_CHIP_CAP_11D_EN) {

		wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_IGNORE |

					   REGULATORY_DISABLE_BEACON_HINTS;

	} else {

		memzero_explicit(&mdev->alpha2, sizeof(mdev->alpha2));

	}



	return 0;

}