From: Johannes Berg <johannes@sipsolutions.net>
To: Bitterblue Smith <rtl8821cerfe2@gmail.com>,
Ping-Ke Shih <pkshih@realtek.com>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Cc: Jes Sorensen <Jes.Sorensen@gmail.com>
Subject: Re: [PATCH 1/5] wifi: rtl8xxxu: Add central frequency offset tracking
Date: Fri, 21 Oct 2022 22:22:14 +0200 [thread overview]
Message-ID: <d23613213568545ec808599a33c04a2e77ac7889.camel@sipsolutions.net> (raw)
In-Reply-To: <c3540f87-b124-2642-f53e-aa15704a54e8@gmail.com>
On Fri, 2022-10-21 at 21:32 +0300, Bitterblue Smith wrote:
> >
> > #define XTAL1 GENMASK(22, 17)
> > #define XTAL0 GENMASK(16, 11)
> >
> > val32 &= ~(XTAL1 | XTAL2)
> > val32 |= FIELD_PREP(XTAL1, crystal_cap) |
> > FIELD_PREP(XTAL0, crystal_cap);
> >
>
> Ah, so that's what FIELD_PREP does.
FWIW, personally, I've come to prefer u32_encode_bits() and friends, or,
in this case perhaps
u32p_replace_bits(&val32, crystal_cap, XTAL0);
u32p_replace_bits(&val32, crystal_cap, XTAL1);
or maybe writing that as
val32 &= ~(XTAL0 | XTAL1);
val32 |= u32_encode_bits(crystal_cap, XTAL0);
val32 |= u32_encode_bits(crystal_cap, XTAL1);
instead.
That's partially because there are also le32 variants of it etc. that
are simpler to use with endian-fixed firmware interfaces or similar.
But YMMV (as might that of the maintainers of this driver) :-)
johannes
next prev parent reply other threads:[~2022-10-21 20:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-16 17:26 [PATCH 1/5] wifi: rtl8xxxu: Add central frequency offset tracking Bitterblue Smith
2022-10-16 17:28 ` [PATCH 2/5] wifi: rtl8xxxu: Fix the CCK RSSI calculation Bitterblue Smith
2022-10-16 17:29 ` [PATCH 3/5] wifi: rtl8xxxu: Recognise all possible chip cuts Bitterblue Smith
2022-10-21 5:31 ` Ping-Ke Shih
2022-10-21 17:36 ` Bitterblue Smith
2022-10-16 17:30 ` [PATCH 4/5] wifi: rtl8xxxu: Set IEEE80211_HW_SUPPORT_FAST_XMIT Bitterblue Smith
2022-10-16 17:31 ` [PATCH 5/5] wifi: rtl8xxxu: Use dev_info instead of pr_info Bitterblue Smith
2022-10-21 5:47 ` [PATCH 1/5] wifi: rtl8xxxu: Add central frequency offset tracking Ping-Ke Shih
2022-10-21 18:32 ` Bitterblue Smith
2022-10-21 20:22 ` Johannes Berg [this message]
2022-10-24 1:48 ` Ping-Ke Shih
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