From: Kalle Valo <kvalo@kernel.org>
To: Ping-Ke Shih <pkshih@realtek.com>
Cc: <tony0620emma@gmail.com>, <linux-wireless@vger.kernel.org>,
<kevin_yang@realtek.com>
Subject: Re: [PATCH] rtw88: support SAR via kernel common API
Date: Mon, 20 Dec 2021 11:48:04 +0200 [thread overview]
Message-ID: <875yrjboa3.fsf@codeaurora.org> (raw)
In-Reply-To: <20211220093656.65312-1-pkshih@realtek.com> (Ping-Ke Shih's message of "Mon, 20 Dec 2021 17:36:56 +0800")
Ping-Ke Shih <pkshih@realtek.com> writes:
> From: Zong-Zhe Yang <kevin_yang@realtek.com>
>
> Register cfg80211_sar_capa with type NL80211_SAR_TYPE_POWER and four
> frequency ranges for configurations in unit of 0.25 dBm. And handle
> callback set_sar_specs.
>
> Originally, TX power has three main parameters, i.e. power base,
> power by rate, and power limit. The formula can be simply considered
> as TX power = power base + min(power by rate, power limit). With the
> support of SAR which can be treated as another power limit, there is
> one more parameter for TX power. And the formula will evolve into
> TX power = power base + min(power by rate, power limit, power sar).
>
> Besides, debugfs tx_pwr_tbl is also refined to show SAR information.
> The following is an example for the difference.
> Before supporting SAR,
> -----------------------------------
> ...
> path rate pwr base (byr lmt ) rem
> A CCK_1M 66(0x42) 78 -12 ( 12 -12) 0
> A CCK_2M 66(0x42) 78 -12 ( 8 -12) 0
> ...
> -----------------------------------
> After supporting SAR and making some configurations,
> -----------------------------------
> ...
> path rate pwr base (byr lmt sar ) rem
> A CCK_1M 62(0x3e) 78 -16 ( 12 -12 -16) 0
> A CCK_2M 62(0x3e) 78 -16 ( 8 -12 -16) 0
> ...
> -----------------------------------
>
> Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
I switched my email to kvalo@kernel.org and my codeaurora.org address
will stop working soon, please update your address book and scripts.
No need to resend because of this.
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next prev parent reply other threads:[~2021-12-20 9:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-20 9:36 [PATCH] rtw88: support SAR via kernel common API Ping-Ke Shih
2021-12-20 9:48 ` Kalle Valo [this message]
2021-12-21 18:22 ` Kalle Valo
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