From patchwork Wed Aug 4 22:23:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12419843 X-Patchwork-Delegate: nbd@nbd.name Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14C12C4338F for ; Wed, 4 Aug 2021 22:23:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EFBD760FC3 for ; Wed, 4 Aug 2021 22:23:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233487AbhHDWX2 (ORCPT ); Wed, 4 Aug 2021 18:23:28 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:35044 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S230236AbhHDWX2 (ORCPT ); Wed, 4 Aug 2021 18:23:28 -0400 X-UUID: d1e909313d2e421b82c0b8d3fb9bbc16-20210805 X-UUID: d1e909313d2e421b82c0b8d3fb9bbc16-20210805 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 291457690; Thu, 05 Aug 2021 06:23:10 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 5 Aug 2021 06:23:08 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 5 Aug 2021 06:23:02 +0800 From: To: , CC: , , , , , , , , , , , , , , , Subject: [PATCH v2] mt76: connac: add support maximum regulatory Tx power Date: Thu, 5 Aug 2021 06:23:00 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: YN Chen Consider .max_reg_power in struct ieee80211_channel to limit the maximum power the wireless device allowed to transmit on the corresponding channel according to the regulatory domain. Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: YN Chen --- v2: consider the power limit that can be allowed on mt7663 --- .../wireless/mediatek/mt76/mt76_connac_mcu.c | 43 ++++++++++++++++++- 1 file changed, 41 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c index d71393b1c5e6..80987af03efe 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c @@ -1773,6 +1773,43 @@ static s8 mt76_connac_get_sar_power(struct mt76_phy *phy, return target_power; } +static s8 mt76_connac_get_ch_power(struct mt76_phy *phy, + struct ieee80211_channel *chan, + s8 target_power) +{ + struct mt76_dev *dev = phy->dev; + struct ieee80211_supported_band *sband; + int i; + + switch (chan->band) { + case NL80211_BAND_2GHZ: + sband = &phy->sband_2g.sband; + break; + case NL80211_BAND_5GHZ: + sband = &phy->sband_5g.sband; + break; + default: + return target_power; + } + + for (i = 0; i < sband->n_channels; i++) { + struct ieee80211_channel *ch = &sband->channels[i]; + + if (ch->hw_value == chan->hw_value) { + if (!(ch->flags & IEEE80211_CHAN_DISABLED)) { + int power = 2 * ch->max_reg_power; + + if (is_mt7663(dev) && (power > 63 || power < -64)) + power = 63; + target_power = min_t(s8, power, target_power); + } + break; + } + } + + return target_power; +} + static int mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy, enum nl80211_band band) @@ -1840,10 +1877,12 @@ mt76_connac_mcu_rate_txpower_band(struct mt76_phy *phy, .hw_value = ch_list[idx], .band = band, }; - s8 sar_power; + s8 reg_power, sar_power; + reg_power = mt76_connac_get_ch_power(phy, &chan, + tx_power); sar_power = mt76_connac_get_sar_power(phy, &chan, - tx_power); + reg_power); mt76_get_rate_power_limits(phy, &chan, &limits, sar_power);