linux.git/drivers/net/wireless/mediatek/mt76/mt7921/init.c, branch master

wifi: mt76: mt7921: add MT7902 MCU support

2026-03-24T15:49:29+00:00

Add MCU support for the MT7902 chipset.

runtime pm is not yet supported by the driver, but normal mac80211
operation is unaffected.

Signed-off-by: Sean Wang 
Link: https://patch.msgid.link/20260219004007.19733-8-sean.wang@kernel.org
Signed-off-by: Felix Fietkau

wifi: mt76: replace use of system_wq with system_percpu_wq

2025-11-24T13:58:52+00:00

Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.

This lack of consistentcy cannot be addressed without refactoring the API.
For more details see the Link tag below.

This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:

commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")

Switch to using system_percpu_wq because system_wq is going away as part of
a workqueue restructuring.

Suggested-by: Tejun Heo 
Signed-off-by: Marco Crivellari 
Link: https://patch.msgid.link/20250922093243.140946-2-marco.crivellari@suse.com
Signed-off-by: Felix Fietkau

wifi: mt76: relicense to BSD-3-Clause-Clear

2025-11-24T13:37:54+00:00

MediaTek has asked to switch from the ISC license to BSD-3-Clause-Clear,
in order to improve clarity and the legal integrity of the code.

The BSD-3-Clause license includes the "no endorsement" clause, which is
important for protecting the reputation of the original authors and
contributors by preventing unauthorized use of their names for endorsement
purposes.

This clause is absent in the BSD-2-Clause license, which is more permissive
but lacks this specific protection.

This change also cleans up the license of some Kconfig/Makefile files,
which were accidentally marked as GPL.

The GPL 2.0 remains in use on mt76x0, as well as two source files in mt7615
for which the license situation still needs to be clarified.

Link: https://patch.msgid.link/20251008104250.46292-2-nbd@nbd.name
Signed-off-by: Felix Fietkau

wifi: mt76: mt76_eeprom_override to int

2025-09-15T07:49:50+00:00

mt76_eeprom_override has of_get_mac_address, which can return
-EPROBE_DEFER if the nvmem driver gets loaded after mt76 for some
reason.

Make sure this gets passed to probe so that nvmem mac overrides always
work.

Signed-off-by: Rosen Penev 
Link: https://patch.msgid.link/20250911221619.16035-1-rosenp@gmail.com
Signed-off-by: Felix Fietkau

wifi: mt76: mt7921: avoid undesired changes of the preset regulatory domain

2025-01-14T12:42:30+00:00

Some countries have strict RF restrictions where changing the regulatory
domain dynamically based on the connected AP is not acceptable.
This patch disables Beacon country IE hinting when a valid country code
is set from usersland (e.g., by system using iw or CRDA).

Signed-off-by: Leon Yen 
Signed-off-by: Ming Yen Hsieh 
Tested-by: David Ruth 
Link: https://patch.msgid.link/20240412085357.13756-1-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau

wifi: mt76: introduce mt792x_config_mac_addr_list routine

2025-01-14T12:34:34+00:00

Add mt792x_config_mac_addr_list routine in order to set
the mac address list supported by the driver. Initialize
wiphy->addresses/n_addresses for mt792x driver

Signed-off-by: Hao Zhang 
Signed-off-by: Leon Yen 
Signed-off-by: Allan Wang 
Link: https://patch.msgid.link/20241016101017.19598-1-allan.wang@mediatek.com
Signed-off-by: Felix Fietkau

wifi: mt76: mt7921: Check devm_kasprintf() returned value

2024-09-06T12:23:07+00:00

devm_kasprintf() can return a NULL pointer on failure but this returned
value is not checked. Fix this lack and check the returned value.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 6ae39b7c7ed4 ("wifi: mt76: mt7921: Support temp sensor")
Signed-off-by: Ma Ke 
Reviwed-by: Matthias Brugger 
Link: https://patch.msgid.link/20240903014455.4144536-1-make24@iscas.ac.cn
Signed-off-by: Felix Fietkau

wifi: mt76: mt7921: fix wrong UNII-4 freq range check for the channel usage

2024-09-05T11:01:55+00:00

The check should start from 5845 to 5925, which includes
channels 169, 173, and 177.

Fixes: 09382d8f8641 ("wifi: mt76: mt7921: update the channel usage when the regd domain changed")
Signed-off-by: Ming Yen Hsieh 
Link: https://patch.msgid.link/20240806013408.17874-1-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau

wifi: mt76: mt7921: fix the unfinished command of regd_notifier before suspend

2024-02-22T08:55:19+00:00

Before entering suspend, we need to ensure that all MCU command are
completed. In some cases, such as with regd_notifier, there is a
chance that CLC commands, will be executed before suspend.

Signed-off-by: Ming Yen Hsieh 
Signed-off-by: Leon Yen 
Signed-off-by: Felix Fietkau

wifi: mt76: mt7921: fix CLC command timeout when suspend/resume

2023-12-11T12:11:53+00:00

When enter suspend/resume while in a connected state, the upper layer
will trigger disconnection before entering suspend, and at the same time,
it will trigger regd_notifier() and update CLC, causing the CLC event to
not be received due to suspend, resulting in a command timeout.

Therefore, the update of CLC is postponed until resume, to ensure data
consistency and avoid the occurrence of command timeout.

Fixes: 4fc8df50fd41 ("wifi: mt76: mt7921: get regulatory information from the clc event")
Signed-off-by: Ming Yen Hsieh 
Signed-off-by: Felix Fietkau