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From:   Fabrizio del Tin <devotedmystic@gmail.com>
Date:   Tue, 23 May 2023 15:11:07 +0200
Message-ID: <CAMzNfvPtmGyXDV9m-whhptH5n3xJL1-ZPNed3yrkXG-DSF==+w@mail.gmail.com>
Subject: Re: Realtek RTL8832CU compatibility
To:     Larry Finger <Larry.Finger@lwfinger.net>
Cc:     linux-wireless@vger.kernel.org, James <bjlockie@lockie.ca>
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I found that rtl8852cu should already be in linux-firmware:
https://www.mail-archive.com/kernel-packages@lists.launchpad.net/msg490319.=
html

Maybe it is just matter of adding rtl8832cu as a variant.

Fabrizio

On Tue, May 23, 2023 at 9:28=E2=80=AFAM Fabrizio del Tin
<devotedmystic@gmail.com> wrote:
>
> I got the common.mk file from here:
> https://github.com/lwfinger/rtl8852au/blob/dwa-x1850/common.mk
>
> It seemed to me it could be fit.
>
> It compiled for a long while, then died:
>
>   CC [M]  /usr/src/rtw8852cu/phl/hal_g6/phy/rf/halrf_8852c/halrf_kfree_88=
52c.o
>   CC [M]  /usr/src/rtw8852cu/phl/hal_g6/phy/rf/halrf_8852c/halrf_psd_8852=
c.o
>   LD [M]  /usr/src/rtw8852cu/8852cu.o
>   MODPOST /usr/src/rtw8852cu/Module.symvers
> ERROR: modpost: "dump_radar_detect_status"
> [/usr/src/rtw8852cu/8852cu.ko] undefined!
> ERROR: modpost: "rtw_dfs_rd_hdl" [/usr/src/rtw8852cu/8852cu.ko] undefined=
!
> ERROR: modpost: "rtw_chset_search_ch" [/usr/src/rtw8852cu/8852cu.ko] unde=
fined!
> ERROR: modpost: "dump_chinfos" [/usr/src/rtw8852cu/8852cu.ko] undefined!
> ERROR: modpost: "rtw_rfctl_dfs_init" [/usr/src/rtw8852cu/8852cu.ko] undef=
ined!
> ERROR: modpost: "get_ch_type_from_str" [/usr/src/rtw8852cu/8852cu.ko] und=
efined!
> ERROR: modpost: "rtw_5ghz_a_channels" [/usr/src/rtw8852cu/8852cu.ko] unde=
fined!
> ERROR: modpost: "rtw_ap_check_ecsa_allow"
> [/usr/src/rtw8852cu/8852cu.ko] undefined!
> ERROR: modpost: "rtw_chset_is_bchbw_non_ocp"
> [/usr/src/rtw8852cu/8852cu.ko] undefined!
> ERROR: modpost: "rtw_chset_search_bch" [/usr/src/rtw8852cu/8852cu.ko] und=
efined!
> WARNING: modpost: suppressed 41 unresolved symbol warnings because
> there were too many)
> make[2]: *** [scripts/Makefile.modpost:136:
> /usr/src/rtw8852cu/Module.symvers] Error 1
> make[1]: *** [Makefile:1977: modpost] Error 2
> make: *** [Makefile:705: modules] Error 2
>
> Fabrizio
>
> On Tue, May 23, 2023 at 9:16=E2=80=AFAM Fabrizio del Tin
> <devotedmystic@gmail.com> wrote:
> >
> > Hello Larry,
> > great news really!
> >
> > Actually, the file common.mk is missing, so it fails.
> >
> > #rm -f .symvers.8852cu
> > make ARCH=3Dx86_64 CROSS_COMPILE=3D -C /lib/modules/6.3.3-arch1-1/build
> > M=3D/usr/src/rtw8852cu  modules
> > /usr/src/rtw8852cu/Makefile:654: /usr/src/rtw8852cu/common.mk: No such
> > file or directory
> > make[2]: *** No rule to make target '/usr/src/rtw8852cu/common.mk'.  St=
op.
> > make[1]: *** [Makefile:2025: /usr/src/rtw8852cu] Error 2
> > make: *** [Makefile:705: modules] Error 2
> >
> > Fabrizio
> >
> > On Tue, May 23, 2023 at 7:45=E2=80=AFAM Larry Finger <Larry.Finger@lwfi=
nger.net> wrote:
> > >
> > > On 5/22/23 10:35, Fabrizio del Tin wrote:
> > > > Thank you Larry, that would be great.
> > > >
> > > > I was just advised to return the dongle, but I still keep it.
> > >
> > > The RTW8832CU is a variant of the RTW8852CU. I received a copy of the=
 driver
> > > from Realtek and fixed it to build on kernels thru 6.4.0. The driver =
gives
> > > reasopnable performance (350 Mpps up and down) when connected to the =
5G band of
> > > my ax1500 router. This router does not support the 6G band, thus I ca=
nnot say
> > > whether it would work for that 3rd band.
> > >
> > > To get a copy, do the following:
> > >
> > > git clone https://github.com/lwfinger/rtw8852cu.git
> > > cd rtw8852cu
> > > make
> > > sudo make install
> > >
> > > I suggest that you install the modeswitch package for your distro. Th=
at will
> > > automatically eject the CDROM device and enable the wifi interface.
> > >
> > > I will be making improvements in the coming days, but I wanted you to=
 have
> > > access as soon as possible.
> > >
> > > Larry
> > >