Ping-Ke Shih <pkshih@xxxxxxxxxxx> wrote: > From: Zong-Zhe Yang <kevin_yang@xxxxxxxxxxx> > > 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@xxxxxxxxxxx> > Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx> Patch applied to wireless-drivers-next.git, thanks. 8704d0befb59 rtw88: support SAR via kernel common API -- https://patchwork.kernel.org/project/linux-wireless/patch/20211220093656.65312-1-pkshih@xxxxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
