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Re: [PATCH 8/9] wifi: mt76: mt7921: introduce remain_on_channel support

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Hi Lorenzo,

On Thu, Aug 18, 2022 at 12:39 AM Lorenzo Bianconi <lorenzo@xxxxxxxxxx> wrote:
>
> > Hi Lorenzo,
> >
> > On Wed, Aug 17, 2022 at 12:18 AM Lorenzo Bianconi <lorenzo@xxxxxxxxxx> wrote:
> > >
> > > > From: Sean Wang <sean.wang@xxxxxxxxxxxx>
> > > >
> > > > Introduce remain_on_channel support. Additionally, we add
> > > > mt7921_check_offload_capability to disable .remain_on_channel and
> > > > .cancel_remain_on_channel and related configuration because those
> > > > operations would rely on the fundamental MCU commands that will be only
> > > > supported with newer firmware.
> > > >
> > > > Co-developed-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
> > > > Signed-off-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
> > > > Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
> > > > ---
> > > >  .../net/wireless/mediatek/mt76/mt7921/init.c  |  36 ++++++
> > > >  .../net/wireless/mediatek/mt76/mt7921/main.c  | 112 ++++++++++++++++++
> > > >  .../net/wireless/mediatek/mt76/mt7921/mcu.c   |  24 ++++
> > > >  .../wireless/mediatek/mt76/mt7921/mt7921.h    |  34 ++++++
> > > >  .../net/wireless/mediatek/mt76/mt7921/pci.c   |  13 +-
> > > >  .../net/wireless/mediatek/mt76/mt7921/sdio.c  |  11 +-
> > > >  .../net/wireless/mediatek/mt76/mt7921/usb.c   |   1 +
> > > >  7 files changed, 225 insertions(+), 6 deletions(-)
> > > >
> > > > diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > > index cd960e23770f..1b7a18d42f5b 100644
> > > > --- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > > +++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
> > > > @@ -44,6 +44,35 @@ mt7921_regd_notifier(struct wiphy *wiphy,
> > > >       mt7921_mutex_release(dev);
> > > >  }
> > > >
> > > > +static int mt7921_check_offload_capability(struct mt7921_dev *dev)
> > > > +{
> > > > +     struct ieee80211_hw *hw = mt76_hw(dev);
> > > > +     int year, mon, day, hour, min, sec;
> > > > +     struct wiphy *wiphy = hw->wiphy;
> > > > +     bool fw_can_roc = false;
> > > > +     int ret;
> > > > +
> > > > +     ret = sscanf(dev->mt76.hw->wiphy->fw_version + 11, "%4d%2d%2d%2d%2d%2d",
> > > > +                  &year, &mon, &day, &hour, &min, &sec);
> > >
> > > does the fw have a differnt base version with respect to the previous ones?
> > > checking the date is a bit ugly.
> >
> > I admitted that way was a bit ugly, but I have investigated for a
> > while, and that is the only way we can use to distinguish the version
> > in current mt7921 firmware.
>
> the fw seems pretty new (2022/7/15), is it already available in linux-firmware
> git tree? If not I guess you can increment fw version in a more evident way.
> For the future please remember to do it for major fw changes.

The new FW is not released in linux-firmware. I will try to figure out
a better way to recognize the FW can support the feature and add it in
v2.

     Sean
>
> >
> > >
<snip>



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