From patchwork Tue Nov 22 08:45:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shayne Chen X-Patchwork-Id: 13052053 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3F152C43219 for ; Tue, 22 Nov 2022 08:52:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cz2hRvwAA222Ko9eUmi+gmUgEpr2uwtHyTfISsqXX3o=; b=GmvKk1l1pCzaG90J1ef599uyQE SkJIDuCX6/JB+8em2cSNbd8SdethlDDoD0jbLEb6Fvw1pVxYn27hfDeR2lbtfQgqXv31MMJZVxDPB HUigkY8s5Z7SPfhLRc1eZ8OHm+LlYtOpdapinUv7tR1yY85CTxPxwfMGFnyGHwiM6/6XY+KoQaHtz cQ/gDP/N/SNK9QVbADqmcRSZxrEwo6klmU/wdMN1fCI0dQI2Icg29PxNvTztjc/ziL3Zlzq76WyTe qi/7o9u1tBVl0RMqz9aQ/QyWoUaHUhdV4pOZsD5p6yLiQuHBXflTdDdcCFAVCBy/G4vo8ik9wyz40 6g+DbwYg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oxP1F-006bcy-Fa; Tue, 22 Nov 2022 08:52:41 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oxP1A-006baK-VF for linux-mediatek@lists.infradead.org; Tue, 22 Nov 2022 08:52:40 +0000 X-UUID: 20ddc3df29ac4c738ada0553b44184f6-20221122 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=cz2hRvwAA222Ko9eUmi+gmUgEpr2uwtHyTfISsqXX3o=; b=G3K0YVsLTsCgDBhNPYmNFwS/eJ6UWYbtzLvXt0sYQvQ0uKkUss6krd1AgIuP83GJbbo/1IlCMpXEHk9lQz8aieHbcyRAol4VfHjXmKMVFCv39MsR37p49ujr2AKlhXoOsPW+bQix71BenSFlN4nWjXkS7RlTXqdtYA7fYKG20AA=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.12,REQID:ea6af8df-f04a-4716-b908-b5d9d1672ef3,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:62cd327,CLOUDID:8ee4e5db-6ad4-42ff-91f3-18e0272db660,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 20ddc3df29ac4c738ada0553b44184f6-20221122 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 437135726; Tue, 22 Nov 2022 01:52:25 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Tue, 22 Nov 2022 16:51:58 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Tue, 22 Nov 2022 16:51:58 +0800 From: Shayne Chen To: Felix Fietkau CC: linux-wireless , Lorenzo Bianconi , Ryder Lee , Evelyn Tsai , Bo Jiao , linux-mediatek , Shayne Chen Subject: [PATCH 4/9] wifi: mt76: mt7996: add EEPROM support Date: Tue, 22 Nov 2022 16:45:49 +0800 Message-ID: <20221122084554.9494-5-shayne.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221122084554.9494-1-shayne.chen@mediatek.com> References: <20221122084554.9494-1-shayne.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221122_005237_031684_71E286D0 X-CRM114-Status: GOOD ( 19.82 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org (Split the big patch into smaller intermediate patches by functionality for easier review. Refer to the cover letter for more info.) Signed-off-by: Shayne Chen --- .../wireless/mediatek/mt76/mt7996/eeprom.c | 229 ++++++++++++++++++ .../wireless/mediatek/mt76/mt7996/eeprom.h | 75 ++++++ 2 files changed, 304 insertions(+) create mode 100644 drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c create mode 100644 drivers/net/wireless/mediatek/mt76/mt7996/eeprom.h diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c new file mode 100644 index 000000000000..b9f62bedbc48 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c @@ -0,0 +1,229 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2022 MediaTek Inc. + */ + +#include +#include "mt7996.h" +#include "eeprom.h" + +static int mt7996_check_eeprom(struct mt7996_dev *dev) +{ + u8 *eeprom = dev->mt76.eeprom.data; + u16 val = get_unaligned_le16(eeprom); + + switch (val) { + case 0x7990: + return 0; + default: + return -EINVAL; + } +} + +static char *mt7996_eeprom_name(struct mt7996_dev *dev) +{ + /* reserve for future variants */ + return MT7996_EEPROM_DEFAULT; +} + +static int +mt7996_eeprom_load_default(struct mt7996_dev *dev) +{ + u8 *eeprom = dev->mt76.eeprom.data; + const struct firmware *fw = NULL; + int ret; + + ret = request_firmware(&fw, mt7996_eeprom_name(dev), dev->mt76.dev); + if (ret) + return ret; + + if (!fw || !fw->data) { + dev_err(dev->mt76.dev, "Invalid default bin\n"); + ret = -EINVAL; + goto out; + } + + memcpy(eeprom, fw->data, MT7996_EEPROM_SIZE); + dev->flash_mode = true; + +out: + release_firmware(fw); + + return ret; +} + +static int mt7996_eeprom_load(struct mt7996_dev *dev) +{ + int ret; + + ret = mt76_eeprom_init(&dev->mt76, MT7996_EEPROM_SIZE); + if (ret < 0) + return ret; + + if (ret) { + dev->flash_mode = true; + } else { + u8 free_block_num; + u32 block_num, i; + + /* TODO: check free block event */ + mt7996_mcu_get_eeprom_free_block(dev, &free_block_num); + /* efuse info not enough */ + if (free_block_num >= 59) + return -EINVAL; + + /* read eeprom data from efuse */ + block_num = DIV_ROUND_UP(MT7996_EEPROM_SIZE, MT7996_EEPROM_BLOCK_SIZE); + for (i = 0; i < block_num; i++) + mt7996_mcu_get_eeprom(dev, i * MT7996_EEPROM_BLOCK_SIZE); + } + + return mt7996_check_eeprom(dev); +} + +static int mt7996_eeprom_parse_band_config(struct mt7996_phy *phy) +{ + u8 *eeprom = phy->dev->mt76.eeprom.data; + u32 val = eeprom[MT_EE_WIFI_CONF]; + int ret = 0; + + switch (phy->mt76->band_idx) { + case MT_BAND1: + val = FIELD_GET(MT_EE_WIFI_CONF1_BAND_SEL, val); + break; + case MT_BAND2: + val = eeprom[MT_EE_WIFI_CONF + 1]; + val = FIELD_GET(MT_EE_WIFI_CONF2_BAND_SEL, val); + break; + default: + val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val); + break; + } + + switch (val) { + case MT_EE_BAND_SEL_2GHZ: + phy->mt76->cap.has_2ghz = true; + break; + case MT_EE_BAND_SEL_5GHZ: + phy->mt76->cap.has_5ghz = true; + break; + case MT_EE_BAND_SEL_6GHZ: + phy->mt76->cap.has_6ghz = true; + break; + case MT_EE_BAND_SEL_5GHZ_6GHZ: + phy->mt76->cap.has_5ghz = true; + phy->mt76->cap.has_6ghz = true; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy) +{ + u8 path, nss, band_idx = phy->mt76->band_idx; + u8 *eeprom = dev->mt76.eeprom.data; + struct mt76_phy *mphy = phy->mt76; + + switch (band_idx) { + case MT_BAND1: + path = FIELD_GET(MT_EE_WIFI_CONF2_TX_PATH_BAND1, + eeprom[MT_EE_WIFI_CONF + 2]); + nss = FIELD_GET(MT_EE_WIFI_CONF5_STREAM_NUM_BAND1, + eeprom[MT_EE_WIFI_CONF + 5]); + break; + case MT_BAND2: + path = FIELD_GET(MT_EE_WIFI_CONF2_TX_PATH_BAND2, + eeprom[MT_EE_WIFI_CONF + 2]); + nss = FIELD_GET(MT_EE_WIFI_CONF5_STREAM_NUM_BAND2, + eeprom[MT_EE_WIFI_CONF + 5]); + break; + default: + path = FIELD_GET(MT_EE_WIFI_CONF1_TX_PATH_BAND0, + eeprom[MT_EE_WIFI_CONF + 1]); + nss = FIELD_GET(MT_EE_WIFI_CONF4_STREAM_NUM_BAND0, + eeprom[MT_EE_WIFI_CONF + 4]); + break; + } + + if (!path || path > 4) + path = 4; + + nss = min_t(u8, min_t(u8, 4, nss), path); + + mphy->antenna_mask = BIT(nss) - 1; + mphy->chainmask = (BIT(path) - 1) << dev->chainshift[band_idx]; + dev->chainmask |= mphy->chainmask; + if (band_idx < MT_BAND2) + dev->chainshift[band_idx + 1] = dev->chainshift[band_idx] + + hweight16(mphy->chainmask); + + return mt7996_eeprom_parse_band_config(phy); +} + +int mt7996_eeprom_init(struct mt7996_dev *dev) +{ + int ret; + + ret = mt7996_eeprom_load(dev); + if (ret < 0) { + if (ret != -EINVAL) + return ret; + + dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n"); + ret = mt7996_eeprom_load_default(dev); + if (ret) + return ret; + } + + ret = mt7996_eeprom_parse_hw_cap(dev, &dev->phy); + if (ret < 0) + return ret; + + memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, ETH_ALEN); + mt76_eeprom_override(&dev->mphy); + + return 0; +} + +int mt7996_eeprom_get_target_power(struct mt7996_dev *dev, + struct ieee80211_channel *chan) +{ + u8 *eeprom = dev->mt76.eeprom.data; + int target_power; + + if (chan->band == NL80211_BAND_5GHZ) + target_power = eeprom[MT_EE_TX0_POWER_5G + + mt7996_get_channel_group_5g(chan->hw_value)]; + else if (chan->band == NL80211_BAND_6GHZ) + target_power = eeprom[MT_EE_TX0_POWER_6G + + mt7996_get_channel_group_6g(chan->hw_value)]; + else + target_power = eeprom[MT_EE_TX0_POWER_2G]; + + return target_power; +} + +s8 mt7996_eeprom_get_power_delta(struct mt7996_dev *dev, int band) +{ + u8 *eeprom = dev->mt76.eeprom.data; + u32 val; + s8 delta; + + if (band == NL80211_BAND_5GHZ) + val = eeprom[MT_EE_RATE_DELTA_5G]; + else if (band == NL80211_BAND_6GHZ) + val = eeprom[MT_EE_RATE_DELTA_6G]; + else + val = eeprom[MT_EE_RATE_DELTA_2G]; + + if (!(val & MT_EE_RATE_DELTA_EN)) + return 0; + + delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val); + + return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta; +} diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.h new file mode 100644 index 000000000000..8da599e0abea --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: ISC */ +/* + * Copyright (C) 2022 MediaTek Inc. + */ + +#ifndef __MT7996_EEPROM_H +#define __MT7996_EEPROM_H + +#include "mt7996.h" + +enum mt7996_eeprom_field { + MT_EE_CHIP_ID = 0x000, + MT_EE_VERSION = 0x002, + MT_EE_MAC_ADDR = 0x004, + MT_EE_MAC_ADDR2 = 0x00a, + MT_EE_WIFI_CONF = 0x190, + MT_EE_MAC_ADDR3 = 0x2c0, + MT_EE_RATE_DELTA_2G = 0x1400, + MT_EE_RATE_DELTA_5G = 0x147d, + MT_EE_RATE_DELTA_6G = 0x154a, + MT_EE_TX0_POWER_2G = 0x1300, + MT_EE_TX0_POWER_5G = 0x1301, + MT_EE_TX0_POWER_6G = 0x1310, + + __MT_EE_MAX = 0x1dff, +}; + +#define MT_EE_WIFI_CONF0_TX_PATH GENMASK(2, 0) +#define MT_EE_WIFI_CONF0_BAND_SEL GENMASK(2, 0) +#define MT_EE_WIFI_CONF1_BAND_SEL GENMASK(5, 3) +#define MT_EE_WIFI_CONF2_BAND_SEL GENMASK(2, 0) + +#define MT_EE_WIFI_CONF1_TX_PATH_BAND0 GENMASK(5, 3) +#define MT_EE_WIFI_CONF2_TX_PATH_BAND1 GENMASK(5, 3) +#define MT_EE_WIFI_CONF2_TX_PATH_BAND2 GENMASK(2, 0) +#define MT_EE_WIFI_CONF4_STREAM_NUM_BAND0 GENMASK(5, 3) +#define MT_EE_WIFI_CONF5_STREAM_NUM_BAND1 GENMASK(5, 3) +#define MT_EE_WIFI_CONF5_STREAM_NUM_BAND2 GENMASK(2, 0) + +#define MT_EE_RATE_DELTA_MASK GENMASK(5, 0) +#define MT_EE_RATE_DELTA_SIGN BIT(6) +#define MT_EE_RATE_DELTA_EN BIT(7) + +enum mt7996_eeprom_band { + MT_EE_BAND_SEL_DEFAULT, + MT_EE_BAND_SEL_2GHZ, + MT_EE_BAND_SEL_5GHZ, + MT_EE_BAND_SEL_6GHZ, + MT_EE_BAND_SEL_5GHZ_6GHZ, +}; + +static inline int +mt7996_get_channel_group_5g(int channel) +{ + if (channel <= 64) + return 0; + if (channel <= 96) + return 1; + if (channel <= 128) + return 2; + if (channel <= 144) + return 3; + return 4; +} + +static inline int +mt7996_get_channel_group_6g(int channel) +{ + if (channel <= 29) + return 0; + + return DIV_ROUND_UP(channel - 29, 32); +} + +#endif