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Wed, 30 Dec 2020 10:25:02 -0800 Received: from MTKMBS01N2.mediatek.inc (172.21.101.79) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 30 Dec 2020 10:07:47 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 31 Dec 2020 02:06:31 +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, 31 Dec 2020 02:06:31 +0800 From: To: , Subject: [PATCH -next v4 05/13] mt76: mt7921: add EEPROM support Date: Thu, 31 Dec 2020 02:06:16 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-TM-SNTS-SMTP: 6C902F7100D4C73B1624105ACB08D836CE309F57DA1C06FDBF7D1C7A1891833C2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201230_132642_630373_C6BDD9D0 X-CRM114-Status: GOOD ( 17.95 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ryder.lee@mediatek.com, robin.chiu@mediatek.com, ch.yeh@mediatek.com, Eric.Liang@mediatek.com, sean.wang@mediatek.com, linux-wireless@vger.kernel.org, posh.sun@mediatek.com, YN.Chen@mediatek.com, linux-mediatek@lists.infradead.org, Soul.Huang@mediatek.com, Lorenzo Bianconi Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Sean Wang Add EEPROM support to MT7921 to determine the capability the card has such as indentificaiton, MAC address, the band and antenna number the card able to support. Co-developed-by: Lorenzo Bianconi Signed-off-by: Lorenzo Bianconi Co-developed-by: Soul Huang Signed-off-by: Soul Huang Signed-off-by: Sean Wang --- .../wireless/mediatek/mt76/mt7921/Makefile | 2 +- .../wireless/mediatek/mt76/mt7921/eeprom.c | 101 ++++++++++++++++++ .../wireless/mediatek/mt76/mt7921/eeprom.h | 27 +++++ 3 files changed, 129 insertions(+), 1 deletion(-) create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/eeprom.c create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/eeprom.h diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile index 13721f4cdd43..622749311fc6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile +++ b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile @@ -2,4 +2,4 @@ obj-$(CONFIG_MT7921E) += mt7921e.o -mt7921e-y := pci.o mcu.o mac.o dma.o +mt7921e-y := pci.o mcu.o mac.o dma.o eeprom.o diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7921/eeprom.c new file mode 100644 index 000000000000..dddbd3b43aa9 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7921/eeprom.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2020 MediaTek Inc. */ + +#include "mt7921.h" +#include "eeprom.h" + +static u32 mt7921_eeprom_read(struct mt7921_dev *dev, u32 offset) +{ + u8 *data = dev->mt76.eeprom.data; + + if (data[offset] == 0xff) + mt7921_mcu_get_eeprom(dev, offset); + + return data[offset]; +} + +static int mt7921_eeprom_load(struct mt7921_dev *dev) +{ + int ret; + + ret = mt76_eeprom_init(&dev->mt76, MT7921_EEPROM_SIZE); + if (ret < 0) + return ret; + + memset(dev->mt76.eeprom.data, -1, MT7921_EEPROM_SIZE); + + return 0; +} + +static int mt7921_check_eeprom(struct mt7921_dev *dev) +{ + u8 *eeprom = dev->mt76.eeprom.data; + u16 val; + + mt7921_eeprom_read(dev, MT_EE_CHIP_ID); + val = get_unaligned_le16(eeprom); + + switch (val) { + case 0x7961: + return 0; + default: + return -EINVAL; + } +} + +void mt7921_eeprom_parse_band_config(struct mt7921_phy *phy) +{ + struct mt7921_dev *dev = phy->dev; + u32 val; + + val = mt7921_eeprom_read(dev, MT_EE_WIFI_CONF); + val = FIELD_GET(MT_EE_WIFI_CONF_BAND_SEL, val); + + switch (val) { + case MT_EE_5GHZ: + phy->mt76->cap.has_5ghz = true; + break; + case MT_EE_2GHZ: + phy->mt76->cap.has_2ghz = true; + break; + default: + phy->mt76->cap.has_2ghz = true; + phy->mt76->cap.has_5ghz = true; + break; + } +} + +static void mt7921_eeprom_parse_hw_cap(struct mt7921_dev *dev) +{ + u8 tx_mask, *eeprom = dev->mt76.eeprom.data; + + mt7921_eeprom_parse_band_config(&dev->phy); + + /* read tx mask from eeprom (0: 1Tx, 1: 2Tx) */ + tx_mask = FIELD_GET(MT_EE_WIFI_CONF_TX_MASK, eeprom[MT_EE_WIFI_CONF]); + tx_mask = tx_mask + 1; + dev->chainmask = BIT(tx_mask) - 1; + dev->mphy.antenna_mask = dev->chainmask; + dev->phy.chainmask = dev->mphy.antenna_mask; +} + +int mt7921_eeprom_init(struct mt7921_dev *dev) +{ + int ret; + + ret = mt7921_eeprom_load(dev); + if (ret < 0) + return ret; + + ret = mt7921_check_eeprom(dev); + if (ret) + return ret; + + mt7921_eeprom_parse_hw_cap(dev); + memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, + ETH_ALEN); + + mt76_eeprom_override(&dev->mphy); + + return 0; +} diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7921/eeprom.h new file mode 100644 index 000000000000..54f30401343c --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7921/eeprom.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: ISC */ +/* Copyright (C) 2020 MediaTek Inc. */ + +#ifndef __MT7921_EEPROM_H +#define __MT7921_EEPROM_H + +#include "mt7921.h" + +enum mt7921_eeprom_field { + MT_EE_CHIP_ID = 0x000, + MT_EE_VERSION = 0x002, + MT_EE_MAC_ADDR = 0x004, + MT_EE_WIFI_CONF = 0x07c, + __MT_EE_MAX = 0x3bf +}; + +#define MT_EE_WIFI_CONF_TX_MASK BIT(0) +#define MT_EE_WIFI_CONF_BAND_SEL GENMASK(3, 2) + +enum mt7921_eeprom_band { + MT_EE_NA, + MT_EE_5GHZ, + MT_EE_2GHZ, + MT_EE_DUAL_BAND, +}; + +#endif -- 2.25.1 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek