linux-kernel - Re: [PATCH v3 1/2] Bluetooth: btusb: Add new VID/PID 0489/e102 for MT7922

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Date:   Mon, 10 Jul 2023 03:39:56 +0000
From:   Chris Lu (陸稚泓) <Chris.Lu@...iatek.com>
To:     "rgammans@...mascience.co.uk" <rgammans@...mascience.co.uk>
CC:     "marcel@...tmann.org" <marcel@...tmann.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "linux-bluetooth@...r.kernel.org" <linux-bluetooth@...r.kernel.org>,
        "johan.hedberg@...il.com" <johan.hedberg@...il.com>,
        Steve Lee (李視誠) <steve.lee@...iatek.com>,
        Sean Wang <Sean.Wang@...iatek.com>,
        Aaron Hou (侯俊仰) <Aaron.Hou@...iatek.com>,
        "luiz.dentz@...il.com" <luiz.dentz@...il.com>
Subject: Re: [PATCH v3 1/2] Bluetooth: btusb: Add new VID/PID 0489/e102 for
 MT7922

On Fri, 2023-07-07 at 13:04 +0100, Roger Gammans wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  On Fri, Jul 07, 2023 at 02:29:58PM +0800, Chris Lu wrote:
> > Add VID 0489 & PID e102 for MediaTek MT7922 USB Bluetooth chip.
> >
> 
> I've been testing a similar patch here for 0489/e0f1, which is the
> vid/pid I see on m my Dell Inspiron laptop.
> 
> 
> Dev info is:
> T:  Bus=03 Lev=01 Prnt=01 Port=02 Cnt=02 Dev#=  3 Spd=480  MxCh= 0
> D:  Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=0489 ProdID=e0f1 Rev= 1.00
> S:  Manufacturer=MediaTek Inc.
> S:  Product=Wireless_Device
> S:  SerialNumber=000000000
> C:* #Ifs= 3 Cfg#= 1 Atr=e0 MxPwr=100mA
> A:  FirstIf#= 0 IfCount= 3 Cls=e0(wlcon) Sub=01 Prot=01
> I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=125us
> E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
> I:  If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  63 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  63 Ivl=1ms
> I:* If#= 2 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
> E:  Ad=8a(I) Atr=03(Int.) MxPS=  64 Ivl=125us
> E:  Ad=0a(O) Atr=03(Int.) MxPS=  64 Ivl=125us
> I:  If#= 2 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
> E:  Ad=8a(I) Atr=03(Int.) MxPS= 512 Ivl=125us
> E:  Ad=0a(O) Atr=03(Int.) MxPS= 512 Ivl=125us
> 
> I've only tested with keyboard/mice HID devices so far, is that 
> good enough?
> 
> Also, do you want me to send a patch or is this enough info ?
> 
> -- 
> Roger Gammans

Hi Roger,

Thanks for your reported and information,
However, due to our company's policy and limitation, I only maintain
Bluetooth driver to support specific project using upstream driver
and which belongs to Mediatek's customer currently. Vid/Pid 0489/e0f1
is a MT7922 module for Windows PC.

We'll recommend that you can send a patch to support MT7922 Bluetooth
module with 0489/e0f1 by yourself if you needed. Otherwise, you have to
wait until there is a linux project adopted with the same module in the
future.

I'll also let my manager aware of such support problem that user
changing OS from windows to Linux.
Sorry for the inconvenience.

BRs,
Chris
>