From patchwork Tue Dec 22 22:26:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Marko X-Patchwork-Id: 346659 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 1E67FC4332E for ; Tue, 22 Dec 2020 22:28:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEE2922D73 for ; Tue, 22 Dec 2020 22:28:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728412AbgLVW2J (ORCPT ); Tue, 22 Dec 2020 17:28:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728406AbgLVW2I (ORCPT ); Tue, 22 Dec 2020 17:28:08 -0500 Received: from mail-ej1-x644.google.com (mail-ej1-x644.google.com [IPv6:2a00:1450:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51C63C0611CD for ; Tue, 22 Dec 2020 14:26:51 -0800 (PST) Received: by mail-ej1-x644.google.com with SMTP id w1so20261046ejf.11 for ; Tue, 22 Dec 2020 14:26:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sartura-hr.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Yul4iWdlmOk+Q5LRqiSaRQ0ORH0O37VYBFuSOLUHpg0=; b=bwQKxvdpO7GP07Q/xQLUMIfez5ykpIK7uM8jlRfVXubLkKudoZUhiCyATbu8R8zibZ znrR7OnBwHVo56Z51vkNLpPH9JtX5q/Hf0gNx5zr86Bu2eTD+iBOUu5NRVKfYAyCyNB0 ZEnRttBLxOa+xPvYICU9NvhxMtkZag8hmPoRjegjhYiaUvryVNSSaMcicHNrp4GbwXII R5HolJ103yKURVFmhG8oa5yy17cHysg12FXHQYmWs/4b9baTTv27lYDFkg4TUjRotmxK c4IW6mW4t3egkDiM4gYpy/js3ufbNrWXUykHDsRiK3Pr7Q+EUEmzMu7dOHwp9p620G2u UKKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Yul4iWdlmOk+Q5LRqiSaRQ0ORH0O37VYBFuSOLUHpg0=; b=l+kU9TlZ3oXbXEcJpn5VZsVXspD1RYaMMatUfiO4xjl16aOYkq/U63lKNg+xvTDAR4 4a3ZwxAZA6VHYFlt2VKZvOe4I8dxw2Vu4BQS09W7m4Z14rauq2vWW822o5e+pRdhaG0R g/Iaj9MXL/H3xkBRiw4T47Am4Z3V/1C+gC3jh06zYA12OUHiWuV0ZHh0GiQW5jNS1ha5 +Ao0TKXoizrZzR1eM0zTJey/oJaYhklX0qSFdnvAx159vEWiXHSZ1yPym0PNVee/sPLS IQj7/uiZe2+XebPV+PCHgVtUpHztO17m94zMUXBuDtL0Njb3ChkmmIh4dPbU2x5NTSGQ SSig== X-Gm-Message-State: AOAM531Yaj+a1DdyDA/AY699Zv92VPPzvUAZ6VnQnJZwkRLCUS2MYEzj zMypVb5y/wMOvUk45ORt9cD+Bw== X-Google-Smtp-Source: ABdhPJwjX+rw3fKroM69lqAIcwPeFrfvsqUAfJPICGyVNucZknuFfL520heC7sJCZmD2xBJ/cFAfHg== X-Received: by 2002:a17:906:d101:: with SMTP id b1mr2271636ejz.80.1608676009930; Tue, 22 Dec 2020 14:26:49 -0800 (PST) Received: from localhost.localdomain (dh207-99-167.xnet.hr. [88.207.99.167]) by smtp.googlemail.com with ESMTPSA id c23sm30515385eds.88.2020.12.22.14.26.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Dec 2020 14:26:49 -0800 (PST) From: Robert Marko To: agross@kernel.org, bjorn.andersson@linaro.org, robh+dt@kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, andrew@lunn.ch, linux@armlinux.org.uk Cc: Robert Marko , Luka Perkov Subject: [PATCH 3/4] net: phy: Add Qualcomm QCA807x driver Date: Tue, 22 Dec 2020 23:26:36 +0100 Message-Id: <20201222222637.3204929-4-robert.marko@sartura.hr> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201222222637.3204929-1-robert.marko@sartura.hr> References: <20201222222637.3204929-1-robert.marko@sartura.hr> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This adds driver for the Qualcomm QCA8072 and QCA8075 PHY-s. They are 2 or 5 port IEEE 802.3 clause 22 compliant 10BASE-Te, 100BASE-TX and 1000BASE-T PHY-s. They feature 2 SerDes, one for PSGMII or QSGMII connection with MAC, while second one is SGMII for connection to MAC or fiber. Both models have a combo port that supports 1000BASE-X and 100BASE-FX fiber. Each PHY inside of QCA807x series has 2 digitally controlled output only pins that natively drive LED-s. But some vendors used these to driver generic LED-s controlled by user space, so lets enable registering each PHY as GPIO controller and add driver for it. This also adds the ability to specify DT properties so that 1000 Base-T LED will also be lit up for 100 and 10 Base connections. This is usually done by U-boot, but boards running mainline U-boot are not configuring this yet. These PHY-s are commonly used in Qualcomm IPQ40xx, IPQ60xx and IPQ807x boards. Signed-off-by: Robert Marko Cc: Luka Perkov --- drivers/net/phy/Kconfig | 10 + drivers/net/phy/Makefile | 1 + drivers/net/phy/qca807x.c | 811 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 822 insertions(+) create mode 100644 drivers/net/phy/qca807x.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 92164e7b7f60..1aaeca3f133c 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -264,6 +264,16 @@ config QSEMI_PHY help Currently supports the qs6612 +config QCA807X_PHY + tristate "Qualcomm QCA807X PHYs" + depends on OF_MDIO + help + Adds support for the Qualcomm QCA807x PHYs. + These are 802.3 Clause 22 compliant PHYs supporting gigabit + ethernet as well as 100Base-FX and 1000Base-X fibre. + + Currently supports the QCA8072 and QCA8075 models. + config REALTEK_PHY tristate "Realtek PHYs" help diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index ca0a313423b9..5f463ce0f711 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -74,6 +74,7 @@ obj-$(CONFIG_MICROSEMI_PHY) += mscc/ obj-$(CONFIG_NATIONAL_PHY) += national.o obj-$(CONFIG_NXP_TJA11XX_PHY) += nxp-tja11xx.o obj-$(CONFIG_QSEMI_PHY) += qsemi.o +obj-$(CONFIG_QCA807X_PHY) += qca807x.o obj-$(CONFIG_REALTEK_PHY) += realtek.o obj-$(CONFIG_RENESAS_PHY) += uPD60620.o obj-$(CONFIG_ROCKCHIP_PHY) += rockchip.o diff --git a/drivers/net/phy/qca807x.c b/drivers/net/phy/qca807x.c new file mode 100644 index 000000000000..db082d2aa560 --- /dev/null +++ b/drivers/net/phy/qca807x.c @@ -0,0 +1,811 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2020 Sartura Ltd. + * + * Author: Robert Marko + * + * Qualcomm QCA8072 and QCA8075 PHY driver + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#define PHY_ID_QCA8072 0x004dd0b2 +#define PHY_ID_QCA8075 0x004dd0b1 +#define PHY_ID_QCA807X_PSGMII 0x06820805 + +/* Downshift */ +#define QCA807X_SMARTSPEED_EN BIT(5) +#define QCA807X_SMARTSPEED_RETRY_LIMIT_MASK GENMASK(4, 2) +#define QCA807X_SMARTSPEED_RETRY_LIMIT_DEFAULT 5 +#define QCA807X_SMARTSPEED_RETRY_LIMIT_MIN 2 +#define QCA807X_SMARTSPEED_RETRY_LIMIT_MAX 9 + +/* Cable diagnostic test (CDT) */ +#define QCA807X_CDT 0x16 +#define QCA807X_CDT_ENABLE BIT(15) +#define QCA807X_CDT_ENABLE_INTER_PAIR_SHORT BIT(13) +#define QCA807X_CDT_STATUS BIT(11) +#define QCA807X_CDT_MMD3_STATUS 0x8064 +#define QCA807X_CDT_MDI0_STATUS_MASK GENMASK(15, 12) +#define QCA807X_CDT_MDI1_STATUS_MASK GENMASK(11, 8) +#define QCA807X_CDT_MDI2_STATUS_MASK GENMASK(7, 4) +#define QCA807X_CDT_MDI3_STATUS_MASK GENMASK(3, 0) +#define QCA807X_CDT_RESULTS_INVALID 0x0 +#define QCA807X_CDT_RESULTS_OK 0x1 +#define QCA807X_CDT_RESULTS_OPEN 0x2 +#define QCA807X_CDT_RESULTS_SAME_SHORT 0x3 +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OK 0x4 +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OK 0x8 +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OK 0xc +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OPEN 0x6 +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OPEN 0xa +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OPEN 0xe +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_SHORT 0x7 +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_SHORT 0xb +#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_SHORT 0xf +#define QCA807X_CDT_RESULTS_BUSY 0x9 +#define QCA807X_CDT_MMD3_MDI0_LENGTH 0x8065 +#define QCA807X_CDT_MMD3_MDI1_LENGTH 0x8066 +#define QCA807X_CDT_MMD3_MDI2_LENGTH 0x8067 +#define QCA807X_CDT_MMD3_MDI3_LENGTH 0x8068 +#define QCA807X_CDT_SAME_SHORT_LENGTH_MASK GENMASK(15, 8) +#define QCA807X_CDT_CROSS_SHORT_LENGTH_MASK GENMASK(7, 0) + +#define QCA807X_CHIP_CONFIGURATION 0x1f +#define QCA807X_BT_BX_REG_SEL BIT(15) +#define QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK GENMASK(3, 0) +#define QCA807X_CHIP_CONFIGURATION_MODE_QSGMII_SGMII 4 +#define QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_FIBER 3 +#define QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_ALL_COPPER 0 + +#define QCA807X_MEDIA_SELECT_STATUS 0x1a +#define QCA807X_MEDIA_DETECTED_COPPER BIT(5) +#define QCA807X_MEDIA_DETECTED_1000_BASE_X BIT(4) +#define QCA807X_MEDIA_DETECTED_100_BASE_FX BIT(3) + +#define QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION 0x807e +#define QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION_EN BIT(0) + +#define QCA807X_MMD7_1000BASE_T_POWER_SAVE_PER_CABLE_LENGTH 0x801a +#define QCA807X_CONTROL_DAC_MASK GENMASK(2, 0) + +#define QCA807X_MMD7_LED_100N_1 0x8074 +#define QCA807X_MMD7_LED_100N_2 0x8075 +#define QCA807X_MMD7_LED_1000N_1 0x8076 +#define QCA807X_MMD7_LED_1000N_2 0x8077 +#define QCA807X_LED_TXACT_BLK_EN_2 BIT(10) +#define QCA807X_LED_RXACT_BLK_EN_2 BIT(9) +#define QCA807X_LED_GT_ON_EN_2 BIT(6) +#define QCA807X_LED_HT_ON_EN_2 BIT(5) +#define QCA807X_LED_BT_ON_EN_2 BIT(4) +#define QCA807X_GPIO_FORCE_EN BIT(15) +#define QCA807X_GPIO_FORCE_MODE_MASK GENMASK(14, 13) + +#define QCA807X_INTR_ENABLE 0x12 +#define QCA807X_INTR_STATUS 0x13 +#define QCA807X_INTR_ENABLE_AUTONEG_ERR BIT(15) +#define QCA807X_INTR_ENABLE_SPEED_CHANGED BIT(14) +#define QCA807X_INTR_ENABLE_DUPLEX_CHANGED BIT(13) +#define QCA807X_INTR_ENABLE_LINK_FAIL BIT(11) +#define QCA807X_INTR_ENABLE_LINK_SUCCESS BIT(10) + +#define QCA807X_FUNCTION_CONTROL 0x10 +#define QCA807X_FC_MDI_CROSSOVER_MODE_MASK GENMASK(6, 5) +#define QCA807X_FC_MDI_CROSSOVER_AUTO 3 +#define QCA807X_FC_MDI_CROSSOVER_MANUAL_MDIX 1 +#define QCA807X_FC_MDI_CROSSOVER_MANUAL_MDI 0 + +#define QCA807X_PHY_SPECIFIC_STATUS 0x11 +#define QCA807X_SS_SPEED_AND_DUPLEX_RESOLVED BIT(11) +#define QCA807X_SS_SPEED_MASK GENMASK(15, 14) +#define QCA807X_SS_SPEED_1000 2 +#define QCA807X_SS_SPEED_100 1 +#define QCA807X_SS_SPEED_10 0 +#define QCA807X_SS_DUPLEX BIT(13) +#define QCA807X_SS_MDIX BIT(6) + +/* PSGMII PHY specific */ +#define PSGMII_QSGMII_DRIVE_CONTROL_1 0xb +#define PSGMII_QSGMII_TX_DRIVER_MASK GENMASK(7, 4) +#define PSGMII_MODE_CTRL 0x6d +#define PSGMII_MODE_CTRL_AZ_WORKAROUND_MASK GENMASK(3, 0) +#define PSGMII_MMD3_SERDES_CONTROL 0x805a + +struct qca807x_gpio_priv { + struct phy_device *phy; +}; + +static int qca807x_get_downshift(struct phy_device *phydev, u8 *data) +{ + int val, cnt, enable; + + val = phy_read(phydev, MII_NWAYTEST); + if (val < 0) + return val; + + enable = FIELD_GET(QCA807X_SMARTSPEED_EN, val); + cnt = FIELD_GET(QCA807X_SMARTSPEED_RETRY_LIMIT_MASK, val) + 2; + + *data = enable ? cnt : DOWNSHIFT_DEV_DISABLE; + + return 0; +} + +static int qca807x_set_downshift(struct phy_device *phydev, u8 cnt) +{ + int ret, val; + + if (cnt > QCA807X_SMARTSPEED_RETRY_LIMIT_MAX || + (cnt < QCA807X_SMARTSPEED_RETRY_LIMIT_MIN && cnt != DOWNSHIFT_DEV_DISABLE)) + return -EINVAL; + + if (!cnt) { + ret = phy_clear_bits(phydev, MII_NWAYTEST, QCA807X_SMARTSPEED_EN); + } else { + val = QCA807X_SMARTSPEED_EN; + val |= FIELD_PREP(QCA807X_SMARTSPEED_RETRY_LIMIT_MASK, cnt - 2); + + phy_modify(phydev, MII_NWAYTEST, + QCA807X_SMARTSPEED_EN | + QCA807X_SMARTSPEED_RETRY_LIMIT_MASK, + val); + } + + ret = genphy_soft_reset(phydev); + + return ret; +} + +static int qca807x_get_tunable(struct phy_device *phydev, + struct ethtool_tunable *tuna, void *data) +{ + switch (tuna->id) { + case ETHTOOL_PHY_DOWNSHIFT: + return qca807x_get_downshift(phydev, data); + default: + return -EOPNOTSUPP; + } +} + +static int qca807x_set_tunable(struct phy_device *phydev, + struct ethtool_tunable *tuna, const void *data) +{ + switch (tuna->id) { + case ETHTOOL_PHY_DOWNSHIFT: + return qca807x_set_downshift(phydev, *(const u8 *)data); + default: + return -EOPNOTSUPP; + } +} + +static bool qca807x_distance_valid(int result) +{ + switch (result) { + case QCA807X_CDT_RESULTS_OPEN: + case QCA807X_CDT_RESULTS_SAME_SHORT: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OK: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OK: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OK: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OPEN: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OPEN: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OPEN: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_SHORT: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_SHORT: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_SHORT: + return true; + } + return false; +} + +static int qca807x_report_length(struct phy_device *phydev, + int pair, int result) +{ + int length; + int ret; + + ret = phy_read_mmd(phydev, MDIO_MMD_PCS, QCA807X_CDT_MMD3_MDI0_LENGTH + pair); + if (ret < 0) + return ret; + + switch (result) { + case ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT: + length = (FIELD_GET(QCA807X_CDT_SAME_SHORT_LENGTH_MASK, ret) * 800) / 10; + break; + case ETHTOOL_A_CABLE_RESULT_CODE_OPEN: + case ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT: + length = (FIELD_GET(QCA807X_CDT_CROSS_SHORT_LENGTH_MASK, ret) * 800) / 10; + break; + } + + ethnl_cable_test_fault_length(phydev, pair, length); + + return 0; +} + +static int qca807x_cable_test_report_trans(int result) +{ + switch (result) { + case QCA807X_CDT_RESULTS_OK: + return ETHTOOL_A_CABLE_RESULT_CODE_OK; + case QCA807X_CDT_RESULTS_OPEN: + return ETHTOOL_A_CABLE_RESULT_CODE_OPEN; + case QCA807X_CDT_RESULTS_SAME_SHORT: + return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT; + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OK: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OK: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OK: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OPEN: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OPEN: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OPEN: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_SHORT: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_SHORT: + case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_SHORT: + return ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT; + default: + return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC; + } +} + +static int qca807x_cable_test_report(struct phy_device *phydev) +{ + int pair0, pair1, pair2, pair3; + int ret; + + ret = phy_read_mmd(phydev, MDIO_MMD_PCS, QCA807X_CDT_MMD3_STATUS); + if (ret < 0) + return ret; + + pair0 = FIELD_GET(QCA807X_CDT_MDI0_STATUS_MASK, ret); + pair1 = FIELD_GET(QCA807X_CDT_MDI1_STATUS_MASK, ret); + pair2 = FIELD_GET(QCA807X_CDT_MDI2_STATUS_MASK, ret); + pair3 = FIELD_GET(QCA807X_CDT_MDI3_STATUS_MASK, ret); + + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_A, + qca807x_cable_test_report_trans(pair0)); + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_B, + qca807x_cable_test_report_trans(pair1)); + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_C, + qca807x_cable_test_report_trans(pair2)); + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_D, + qca807x_cable_test_report_trans(pair3)); + + if (qca807x_distance_valid(pair0)) + qca807x_report_length(phydev, 0, qca807x_cable_test_report_trans(pair0)); + if (qca807x_distance_valid(pair1)) + qca807x_report_length(phydev, 1, qca807x_cable_test_report_trans(pair1)); + if (qca807x_distance_valid(pair2)) + qca807x_report_length(phydev, 2, qca807x_cable_test_report_trans(pair2)); + if (qca807x_distance_valid(pair3)) + qca807x_report_length(phydev, 3, qca807x_cable_test_report_trans(pair3)); + + return 0; +} + +static int qca807x_cable_test_get_status(struct phy_device *phydev, + bool *finished) +{ + int val; + + *finished = false; + + val = phy_read(phydev, QCA807X_CDT); + if (!((val & QCA807X_CDT_ENABLE) && (val & QCA807X_CDT_STATUS))) { + *finished = true; + + return qca807x_cable_test_report(phydev); + } + + return 0; +} + +static int qca807x_cable_test_start(struct phy_device *phydev) +{ + int val, ret; + + val = phy_read(phydev, QCA807X_CDT); + /* Enable inter-pair short check as well */ + val &= ~QCA807X_CDT_ENABLE_INTER_PAIR_SHORT; + val |= QCA807X_CDT_ENABLE; + ret = phy_write(phydev, QCA807X_CDT, val); + + return ret; +} + +#ifdef CONFIG_GPIOLIB +static int qca807x_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) +{ + return GPIO_LINE_DIRECTION_OUT; +} + +static int qca807x_gpio_get_reg(unsigned int offset) +{ + return QCA807X_MMD7_LED_100N_2 + (offset % 2) * 2; +} + +static int qca807x_gpio_get(struct gpio_chip *gc, unsigned int offset) +{ + struct qca807x_gpio_priv *priv = gpiochip_get_data(gc); + int val; + + val = phy_read_mmd(priv->phy, MDIO_MMD_AN, qca807x_gpio_get_reg(offset)); + + return FIELD_GET(QCA807X_GPIO_FORCE_MODE_MASK, val); +} + +static void qca807x_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) +{ + struct qca807x_gpio_priv *priv = gpiochip_get_data(gc); + int val; + + val = phy_read_mmd(priv->phy, MDIO_MMD_AN, qca807x_gpio_get_reg(offset)); + val &= ~QCA807X_GPIO_FORCE_MODE_MASK; + val |= FIELD_PREP(QCA807X_GPIO_FORCE_MODE_MASK, value); + + phy_write_mmd(priv->phy, MDIO_MMD_AN, qca807x_gpio_get_reg(offset), val); +} + +static int qca807x_gpio_dir_out(struct gpio_chip *gc, unsigned int offset, int value) +{ + qca807x_gpio_set(gc, offset, value); + + return 0; +} + +static int qca807x_gpio(struct phy_device *phydev) +{ + struct device *dev = &phydev->mdio.dev; + struct qca807x_gpio_priv *priv; + struct gpio_chip *gc; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->phy = phydev; + + gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL); + if (!gc) + return -ENOMEM; + + gc->label = dev_name(dev); + gc->base = -1; + gc->ngpio = 2; + gc->parent = dev; + gc->owner = THIS_MODULE; + gc->can_sleep = true; + gc->get_direction = qca807x_gpio_get_direction; + gc->direction_output = qca807x_gpio_dir_out; + gc->get = qca807x_gpio_get; + gc->set = qca807x_gpio_set; + + return devm_gpiochip_add_data(dev, gc, priv); +} +#endif + +static int qca807x_read_copper_status(struct phy_device *phydev, bool combo_port) +{ + int ss, err, page, old_link = phydev->link; + + /* Only combo port has dual pages */ + if (combo_port) { + /* Check whether copper page is set and set if needed */ + page = phy_read(phydev, QCA807X_CHIP_CONFIGURATION); + if (!(page & QCA807X_BT_BX_REG_SEL)) { + page |= QCA807X_BT_BX_REG_SEL; + phy_write(phydev, QCA807X_CHIP_CONFIGURATION, page); + } + } + + /* Update the link, but return if there was an error */ + err = genphy_update_link(phydev); + if (err) + return err; + + /* why bother the PHY if nothing can have changed */ + if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link) + return 0; + + phydev->speed = SPEED_UNKNOWN; + phydev->duplex = DUPLEX_UNKNOWN; + phydev->pause = 0; + phydev->asym_pause = 0; + + err = genphy_read_lpa(phydev); + if (err < 0) + return err; + + /* Read the QCA807x PHY-Specific Status register copper page, + * which indicates the speed and duplex that the PHY is actually + * using, irrespective of whether we are in autoneg mode or not. + */ + ss = phy_read(phydev, QCA807X_PHY_SPECIFIC_STATUS); + if (ss < 0) + return ss; + + if (ss & QCA807X_SS_SPEED_AND_DUPLEX_RESOLVED) { + int sfc; + + sfc = phy_read(phydev, QCA807X_FUNCTION_CONTROL); + if (sfc < 0) + return sfc; + + switch (FIELD_GET(QCA807X_SS_SPEED_MASK, ss)) { + case QCA807X_SS_SPEED_10: + phydev->speed = SPEED_10; + break; + case QCA807X_SS_SPEED_100: + phydev->speed = SPEED_100; + break; + case QCA807X_SS_SPEED_1000: + phydev->speed = SPEED_1000; + break; + } + if (ss & QCA807X_SS_DUPLEX) + phydev->duplex = DUPLEX_FULL; + else + phydev->duplex = DUPLEX_HALF; + + if (ss & QCA807X_SS_MDIX) + phydev->mdix = ETH_TP_MDI_X; + else + phydev->mdix = ETH_TP_MDI; + + switch (FIELD_GET(QCA807X_FC_MDI_CROSSOVER_MODE_MASK, sfc)) { + case QCA807X_FC_MDI_CROSSOVER_MANUAL_MDI: + phydev->mdix_ctrl = ETH_TP_MDI; + break; + case QCA807X_FC_MDI_CROSSOVER_MANUAL_MDIX: + phydev->mdix_ctrl = ETH_TP_MDI_X; + break; + case QCA807X_FC_MDI_CROSSOVER_AUTO: + phydev->mdix_ctrl = ETH_TP_MDI_AUTO; + break; + } + } + + if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) + phy_resolve_aneg_pause(phydev); + + return 0; +} + +static int qca807x_read_fiber_status(struct phy_device *phydev, bool combo_port) +{ + int ss, err, page, lpa, old_link = phydev->link; + + /* Check whether fiber page is set and set if needed */ + page = phy_read(phydev, QCA807X_CHIP_CONFIGURATION); + if (page & QCA807X_BT_BX_REG_SEL) { + page &= ~QCA807X_BT_BX_REG_SEL; + phy_write(phydev, QCA807X_CHIP_CONFIGURATION, page); + } + + /* Update the link, but return if there was an error */ + err = genphy_update_link(phydev); + if (err) + return err; + + /* why bother the PHY if nothing can have changed */ + if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link) + return 0; + + phydev->speed = SPEED_UNKNOWN; + phydev->duplex = DUPLEX_UNKNOWN; + phydev->pause = 0; + phydev->asym_pause = 0; + + if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { + lpa = phy_read(phydev, MII_LPA); + if (lpa < 0) + return lpa; + + linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + phydev->lp_advertising, lpa & LPA_LPACK); + linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, + phydev->lp_advertising, lpa & LPA_1000XFULL); + linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, + phydev->lp_advertising, lpa & LPA_1000XPAUSE); + linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, + phydev->lp_advertising, + lpa & LPA_1000XPAUSE_ASYM); + + phy_resolve_aneg_linkmode(phydev); + } + + /* Read the QCA807x PHY-Specific Status register fiber page, + * which indicates the speed and duplex that the PHY is actually + * using, irrespective of whether we are in autoneg mode or not. + */ + ss = phy_read(phydev, QCA807X_PHY_SPECIFIC_STATUS); + if (ss < 0) + return ss; + + if (ss & QCA807X_SS_SPEED_AND_DUPLEX_RESOLVED) { + switch (FIELD_GET(QCA807X_SS_SPEED_MASK, ss)) { + case QCA807X_SS_SPEED_100: + phydev->speed = SPEED_100; + break; + case QCA807X_SS_SPEED_1000: + phydev->speed = SPEED_1000; + break; + } + + if (ss & QCA807X_SS_DUPLEX) + phydev->duplex = DUPLEX_FULL; + else + phydev->duplex = DUPLEX_HALF; + } + + return 0; +} + +static int qca807x_read_status(struct phy_device *phydev) +{ + int val; + + /* Check for Combo port */ + if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) { + /* Check for fiber mode first */ + if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported)) { + /* Check for actual detected media */ + val = phy_read(phydev, QCA807X_MEDIA_SELECT_STATUS); + if (val & QCA807X_MEDIA_DETECTED_COPPER) { + qca807x_read_copper_status(phydev, true); + } else if ((val & QCA807X_MEDIA_DETECTED_1000_BASE_X) || + (val & QCA807X_MEDIA_DETECTED_100_BASE_FX)) { + qca807x_read_fiber_status(phydev, true); + } + } else { + qca807x_read_copper_status(phydev, true); + } + } else { + qca807x_read_copper_status(phydev, false); + } + + return 0; +} + +static int qca807x_config_intr(struct phy_device *phydev) +{ + int ret, val; + + val = phy_read(phydev, QCA807X_INTR_ENABLE); + + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { + /* Check for combo port as it has fewer interrupts */ + if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) { + val |= QCA807X_INTR_ENABLE_SPEED_CHANGED; + val |= QCA807X_INTR_ENABLE_LINK_FAIL; + val |= QCA807X_INTR_ENABLE_LINK_SUCCESS; + } else { + val |= QCA807X_INTR_ENABLE_AUTONEG_ERR; + val |= QCA807X_INTR_ENABLE_SPEED_CHANGED; + val |= QCA807X_INTR_ENABLE_DUPLEX_CHANGED; + val |= QCA807X_INTR_ENABLE_LINK_FAIL; + val |= QCA807X_INTR_ENABLE_LINK_SUCCESS; + } + ret = phy_write(phydev, QCA807X_INTR_ENABLE, val); + } else { + ret = phy_write(phydev, QCA807X_INTR_ENABLE, 0); + } + + return ret; +} + +static int qca807x_ack_intr(struct phy_device *phydev) +{ + int ret; + + ret = phy_read(phydev, QCA807X_INTR_STATUS); + + return (ret < 0) ? ret : 0; +} + +static int qca807x_led_config(struct phy_device *phydev) +{ + struct device_node *node = phydev->mdio.dev.of_node; + bool led_config = false; + int val; + + val = phy_read_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_LED_1000N_1); + if (val < 0) + return val; + + if (of_property_read_bool(node, "qcom,single-led-1000")) { + val |= QCA807X_LED_TXACT_BLK_EN_2; + val |= QCA807X_LED_RXACT_BLK_EN_2; + val |= QCA807X_LED_GT_ON_EN_2; + + led_config = true; + } + + if (of_property_read_bool(node, "qcom,single-led-100")) { + val |= QCA807X_LED_HT_ON_EN_2; + + led_config = true; + } + + if (of_property_read_bool(node, "qcom,single-led-10")) { + val |= QCA807X_LED_BT_ON_EN_2; + + led_config = true; + } + + if (led_config) + return phy_write_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_LED_1000N_1, val); + else + return 0; +} + +static const struct sfp_upstream_ops qca807x_sfp_ops = { + .attach = phy_sfp_attach, + .detach = phy_sfp_detach, +}; + +static int qca807x_config(struct phy_device *phydev) +{ + struct device_node *node = phydev->mdio.dev.of_node; + int control_dac, ret = 0; + u32 of_control_dac; + + /* Check for Combo port */ + if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) { + int fiber_mode_autodect; + int psgmii_serdes; + int chip_config; + + if (of_property_read_bool(node, "qcom,fiber-enable")) { + /* Enable fiber mode autodection (1000Base-X or 100Base-FX) */ + fiber_mode_autodect = phy_read_mmd(phydev, MDIO_MMD_AN, + QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION); + fiber_mode_autodect |= QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION_EN; + phy_write_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION, + fiber_mode_autodect); + + /* Enable 4 copper + combo port mode */ + chip_config = phy_read(phydev, QCA807X_CHIP_CONFIGURATION); + chip_config &= ~QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK; + chip_config |= FIELD_PREP(QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK, + QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_FIBER); + phy_write(phydev, QCA807X_CHIP_CONFIGURATION, chip_config); + + linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported); + linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->advertising); + } + + /* Prevent PSGMII going into hibernation via PSGMII self test */ + psgmii_serdes = phy_read_mmd(phydev, MDIO_MMD_PCS, PSGMII_MMD3_SERDES_CONTROL); + psgmii_serdes &= ~BIT(1); + ret = phy_write_mmd(phydev, MDIO_MMD_PCS, + PSGMII_MMD3_SERDES_CONTROL, + psgmii_serdes); + } + + if (!of_property_read_u32(node, "qcom,control-dac", &of_control_dac)) { + control_dac = phy_read_mmd(phydev, MDIO_MMD_AN, + QCA807X_MMD7_1000BASE_T_POWER_SAVE_PER_CABLE_LENGTH); + control_dac &= ~QCA807X_CONTROL_DAC_MASK; + control_dac |= FIELD_PREP(QCA807X_CONTROL_DAC_MASK, of_control_dac); + ret = phy_write_mmd(phydev, MDIO_MMD_AN, + QCA807X_MMD7_1000BASE_T_POWER_SAVE_PER_CABLE_LENGTH, + control_dac); + } + + /* Optionally configure LED-s */ + if (IS_ENABLED(CONFIG_GPIOLIB)) { + /* Check whether PHY-s pins are used as GPIO-s */ + if (!of_property_read_bool(node, "gpio-controller")) + ret = qca807x_led_config(phydev); + } else { + ret = qca807x_led_config(phydev); + } + + return ret; +} + +static int qca807x_probe(struct phy_device *phydev) +{ + struct device_node *node = phydev->mdio.dev.of_node; + int ret = 0; + + if (IS_ENABLED(CONFIG_GPIOLIB)) { + /* Do not register a GPIO controller unless flagged for it */ + if (of_property_read_bool(node, "gpio-controller")) + ret = qca807x_gpio(phydev); + } + + /* Attach SFP bus on combo port*/ + if (of_property_read_bool(node, "qcom,fiber-enable")) { + if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) + ret = phy_sfp_probe(phydev, &qca807x_sfp_ops); + } + + return ret; +} + +static int qca807x_psgmii_config(struct phy_device *phydev) +{ + struct device_node *node = phydev->mdio.dev.of_node; + int psgmii_az, tx_amp, ret = 0; + u32 tx_driver_strength; + + /* Workaround to enable AZ transmitting ability */ + if (of_property_read_bool(node, "qcom,psgmii-az")) { + psgmii_az = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, PSGMII_MODE_CTRL); + psgmii_az &= ~PSGMII_MODE_CTRL_AZ_WORKAROUND_MASK; + psgmii_az |= FIELD_PREP(PSGMII_MODE_CTRL_AZ_WORKAROUND_MASK, 0xc); + ret = phy_write_mmd(phydev, MDIO_MMD_PMAPMD, PSGMII_MODE_CTRL, psgmii_az); + psgmii_az = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, PSGMII_MODE_CTRL); + } + + /* PSGMII/QSGMII TX amp set to DT defined value instead of default 600mV */ + if (!of_property_read_u32(node, "qcom,tx-driver-strength", &tx_driver_strength)) { + tx_amp = phy_read(phydev, PSGMII_QSGMII_DRIVE_CONTROL_1); + tx_amp &= ~PSGMII_QSGMII_TX_DRIVER_MASK; + tx_amp |= FIELD_PREP(PSGMII_QSGMII_TX_DRIVER_MASK, tx_driver_strength); + ret = phy_write(phydev, PSGMII_QSGMII_DRIVE_CONTROL_1, tx_amp); + } + + return ret; +} + +static struct phy_driver qca807x_drivers[] = { + { + PHY_ID_MATCH_EXACT(PHY_ID_QCA8072), + .name = "Qualcomm QCA8072", + .flags = PHY_POLL_CABLE_TEST, + /* PHY_GBIT_FEATURES */ + .probe = qca807x_probe, + .config_init = qca807x_config, + .read_status = qca807x_read_status, + .config_intr = qca807x_config_intr, + .ack_interrupt = qca807x_ack_intr, + .soft_reset = genphy_soft_reset, + .get_tunable = qca807x_get_tunable, + .set_tunable = qca807x_set_tunable, + .cable_test_start = qca807x_cable_test_start, + .cable_test_get_status = qca807x_cable_test_get_status, + }, + { + PHY_ID_MATCH_EXACT(PHY_ID_QCA8075), + .name = "Qualcomm QCA8075", + .flags = PHY_POLL_CABLE_TEST, + /* PHY_GBIT_FEATURES */ + .probe = qca807x_probe, + .config_init = qca807x_config, + .read_status = qca807x_read_status, + .config_intr = qca807x_config_intr, + .ack_interrupt = qca807x_ack_intr, + .soft_reset = genphy_soft_reset, + .get_tunable = qca807x_get_tunable, + .set_tunable = qca807x_set_tunable, + .cable_test_start = qca807x_cable_test_start, + .cable_test_get_status = qca807x_cable_test_get_status, + }, + { + PHY_ID_MATCH_EXACT(PHY_ID_QCA807X_PSGMII), + .name = "Qualcomm QCA807x PSGMII", + .probe = qca807x_psgmii_config, + }, +}; +module_phy_driver(qca807x_drivers); + +static struct mdio_device_id __maybe_unused qca807x_tbl[] = { + { PHY_ID_MATCH_EXACT(PHY_ID_QCA8072) }, + { PHY_ID_MATCH_EXACT(PHY_ID_QCA8075) }, + { PHY_ID_MATCH_MODEL(PHY_ID_QCA807X_PSGMII) }, + { } +}; + +MODULE_AUTHOR("Robert Marko"); +MODULE_DESCRIPTION("Qualcomm QCA807x PHY driver"); +MODULE_DEVICE_TABLE(mdio, qca807x_tbl); +MODULE_LICENSE("GPL"); From patchwork Tue Dec 22 22:26:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Marko X-Patchwork-Id: 346658 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=-13.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 453F3C433E9 for ; Tue, 22 Dec 2020 22:28:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 27E4820855 for ; Tue, 22 Dec 2020 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[88.207.99.167]) by smtp.googlemail.com with ESMTPSA id c23sm30515385eds.88.2020.12.22.14.26.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Dec 2020 14:26:51 -0800 (PST) From: Robert Marko To: agross@kernel.org, bjorn.andersson@linaro.org, robh+dt@kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, andrew@lunn.ch, linux@armlinux.org.uk Cc: Robert Marko , Luka Perkov Subject: [PATCH 4/4] MAINTAINERS: Add entry for Qualcomm QCA807x PHY driver Date: Tue, 22 Dec 2020 23:26:37 +0100 Message-Id: <20201222222637.3204929-5-robert.marko@sartura.hr> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201222222637.3204929-1-robert.marko@sartura.hr> References: <20201222222637.3204929-1-robert.marko@sartura.hr> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add maintainers entry for the Qualcomm QCA807x PHY driver. Signed-off-by: Robert Marko Cc: Luka Perkov --- MAINTAINERS | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 281de213ef47..a86731f86292 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14546,6 +14546,15 @@ S: Maintained F: Documentation/devicetree/bindings/regulator/vqmmc-ipq4019-regulator.yaml F: drivers/regulator/vqmmc-ipq4019-regulator.c +QUALCOMM QCA807X PHY DRIVER +M: Robert Marko +M: Luka Perkov +L: linux-arm-msm@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/net/qcom,qca807x.yaml +F: drivers/net/phy/qca807x.c +F: include/dt-bindings/net/qcom-qca807x.h + QUALCOMM RMNET DRIVER M: Subash Abhinov Kasiviswanathan M: Sean Tranchetti