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[93.34.89.13]) by smtp.googlemail.com with ESMTPSA id j33-20020a05600c1c2100b0040772934b12sm18205846wms.7.2023.11.20.05.51.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Nov 2023 05:51:32 -0800 (PST) From: Christian Marangi To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andy Gross , Bjorn Andersson , Konrad Dybcio , Andrew Lunn , Heiner Kallweit , Russell King , Florian Fainelli , Broadcom internal kernel review list , Daniel Golle , Qingfang Deng , SkyLake Huang , Matthias Brugger , AngeloGioacchino Del Regno , David Epping , Vladimir Oltean , Christian Marangi , "Russell King (Oracle)" , Harini Katakam , Simon Horman , Robert Marko , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [net-next RFC PATCH 13/14] net: phy: add Qualcom QCA807x driver Date: Mon, 20 Nov 2023 14:50:40 +0100 Message-Id: <20231120135041.15259-14-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231120135041.15259-1-ansuelsmth@gmail.com> References: <20231120135041.15259-1-ansuelsmth@gmail.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Robert Marko 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 4 digitally controlled output only pins that natively drive LED-s. But some vendors used these to driver generic LED-s controlled by userspace, so lets enable registering each PHY as GPIO controller and add driver for it. These are commonly used in Qualcomm IPQ40xx, IPQ60xx and IPQ807x boards. Co-developed-by: Christian Marangi Signed-off-by: Robert Marko Signed-off-by: Christian Marangi --- drivers/net/phy/Kconfig | 7 + drivers/net/phy/Makefile | 1 + drivers/net/phy/qca807x.c | 864 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 872 insertions(+) create mode 100644 drivers/net/phy/qca807x.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 25cfc5ded1da..5ad85bd978a0 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -325,6 +325,13 @@ config AT803X_PHY Currently supports the AR8030, AR8031, AR8033, AR8035 and internal QCA8337(Internal qca8k PHY) model +config QCA807X_PHY + tristate "Qualcomm QCA807x PHYs" + depends on OF_MDIO + help + Currently supports the Qualcomm QCA8072, QCA8075 and the PSGMII + control PHY. + config QSEMI_PHY tristate "Quality Semiconductor PHYs" help diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index f65e85c91fc1..a4da4f127b23 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -82,6 +82,7 @@ obj-$(CONFIG_NCN26000_PHY) += ncn26000.o obj-$(CONFIG_NXP_C45_TJA11XX_PHY) += nxp-c45-tja11xx.o obj-$(CONFIG_NXP_CBTX_PHY) += nxp-cbtx.o obj-$(CONFIG_NXP_TJA11XX_PHY) += nxp-tja11xx.o +obj-$(CONFIG_QCA807X_PHY) += qca807x.o obj-$(CONFIG_QSEMI_PHY) += qsemi.o obj-$(CONFIG_REALTEK_PHY) += realtek.o obj-$(CONFIG_RENESAS_PHY) += uPD60620.o diff --git a/drivers/net/phy/qca807x.c b/drivers/net/phy/qca807x.c new file mode 100644 index 000000000000..5b82af52778a --- /dev/null +++ b/drivers/net/phy/qca807x.c @@ -0,0 +1,864 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2023 Sartura Ltd. + * + * Author: Robert Marko + * Christian Marangi + * + * Qualcomm QCA8072 and QCA8075 PHY driver + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define PHY_ID_QCA8072 0x004dd0b2 +#define PHY_ID_QCA8075 0x004dd0b1 + +/* 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_BT_BX_REG_SEL_FIBER 0 +#define QCA807X_BT_BX_REG_SEL_COPPER 1 +#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) + +/* PQSGMII Analog PHY specific */ +#define PQSGMII_CTRL_REG 0x0 +#define PQSGMII_ANALOG_SW_RESET BIT(6) +#define PQSGMII_DRIVE_CONTROL_1 0xb +#define PQSGMII_TX_DRIVER_MASK GENMASK(7, 4) +#define PQSGMII_MODE_CTRL 0x6d +#define PQSGMII_MODE_CTRL_AZ_WORKAROUND_MASK BIT(0) +#define PQSGMII_MMD3_SERDES_CONTROL 0x805a + +#define SERDES_RESET_SLEEP 100 + +enum qca807x_global_phy { + QCA807X_COMBO_ADDR = 0, + QCA807X_PQSGMII_ADDR, + + __QCA807X_GLOBAL_PHY_MAX, +}; + +const char * const qca807x_global_phy_names[] = { + [QCA807X_COMBO_ADDR] = "combo", + [QCA807X_PQSGMII_ADDR] = "pqsgmii", +}; + +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 |= QCA807X_GPIO_FORCE_EN; + 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) +{ + int ss, err, old_link = phydev->link; + + /* 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) +{ + int ss, err, lpa, old_link = phydev->link; + + /* 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) +{ + if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported)) { + switch (phydev->port) { + case PORT_FIBRE: + return qca807x_read_fiber_status(phydev); + case PORT_TP: + return qca807x_read_copper_status(phydev); + default: + return -EINVAL; + } + } + + return qca807x_read_copper_status(phydev); +} + +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 irqreturn_t qca807x_handle_interrupt(struct phy_device *phydev) +{ + int irq_status, int_enabled; + + irq_status = phy_read(phydev, QCA807X_INTR_STATUS); + if (irq_status < 0) { + phy_error(phydev); + return IRQ_NONE; + } + + /* Read the current enabled interrupts */ + int_enabled = phy_read(phydev, QCA807X_INTR_ENABLE); + if (int_enabled < 0) { + phy_error(phydev); + return IRQ_NONE; + } + + /* See if this was one of our enabled interrupts */ + if (!(irq_status & int_enabled)) + return IRQ_NONE; + + phy_trigger_machine(phydev); + + return IRQ_HANDLED; +} + +static int qca807x_sfp_insert(void *upstream, const struct sfp_eeprom_id *id) +{ + struct phy_device *phydev = upstream; + __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, }; + phy_interface_t iface; + int ret; + DECLARE_PHY_INTERFACE_MASK(interfaces); + + sfp_parse_support(phydev->sfp_bus, id, support, interfaces); + iface = sfp_select_interface(phydev->sfp_bus, support); + + dev_info(&phydev->mdio.dev, "%s SFP module inserted\n", phy_modes(iface)); + + switch (iface) { + case PHY_INTERFACE_MODE_1000BASEX: + case PHY_INTERFACE_MODE_100BASEX: + /* Set PHY mode to PSGMII combo (1/4 copper + combo ports) mode */ + ret = phy_modify(phydev, + QCA807X_CHIP_CONFIGURATION, + QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK, + QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_FIBER); + /* Enable fiber mode autodection (1000Base-X or 100Base-FX) */ + ret = phy_set_bits_mmd(phydev, + MDIO_MMD_AN, + QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION, + QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION_EN); + /* Select fiber page */ + ret = phy_clear_bits(phydev, + QCA807X_CHIP_CONFIGURATION, + QCA807X_BT_BX_REG_SEL); + + phydev->port = PORT_FIBRE; + break; + default: + dev_err(&phydev->mdio.dev, "Incompatible SFP module inserted\n"); + return -EINVAL; + } + + return ret; +} + +static void qca807x_sfp_remove(void *upstream) +{ + struct phy_device *phydev = upstream; + + /* Select copper page */ + phy_set_bits(phydev, + QCA807X_CHIP_CONFIGURATION, + QCA807X_BT_BX_REG_SEL); + + phydev->port = PORT_TP; +} + +static const struct sfp_upstream_ops qca807x_sfp_ops = { + .attach = phy_sfp_attach, + .detach = phy_sfp_detach, + .module_insert = qca807x_sfp_insert, + .module_remove = qca807x_sfp_remove, +}; + +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; + + if (of_property_read_u32(node, "qcom,control-dac", &of_control_dac)) + of_control_dac = QCA807X_CONTROL_DAC_DSP_VOLT_QUARTER_BIAS; + + 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); + + 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)) { + if (of_find_property(node, "leds") && + of_find_property(node, "gpio-controller")) { + phydev_err("Invalid property detected. LEDs and gpio-controller are mutually exclusive."); + return -EINVAL; + } + + /* Do not register a GPIO controller unless flagged for it */ + if (of_property_read_bool(node, "gpio-controller")) { + ret = qca807x_gpio(phydev); + if (ret) + return ret; + } + } + + /* Attach SFP bus on combo port*/ + if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) { + ret = phy_sfp_probe(phydev, &qca807x_sfp_ops); + linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported); + linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->advertising); + } + + return ret; +} + +static int qca807x_phy_package_config_init_once(struct phy_device *phydev) +{ + phy_interface_t package_interface = PHY_INTERFACE_MODE_NA; + struct phy_package_shared *shared = phydev->shared; + u32 tx_driver_strength; + int val, ret; + + if (of_property_read_u32(shared->np, "qcom,tx-driver-strength", + &tx_driver_strength)) + tx_driver_strength = PSGMII_QSGMII_TX_DRIVER_600MV; + + phy_lock_mdio_bus(phydev); + + /* Set correct PHY package mode */ + phy_package_get_mode(phydev, &package_interface); + val = __phy_package_read(phydev, QCA807X_COMBO_ADDR, + QCA807X_CHIP_CONFIGURATION); + val &= ~QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK; + if (package_interface == PHY_INTERFACE_MODE_QSGMII) + val |= QCA807X_CHIP_CONFIGURATION_MODE_QSGMII_SGMII; + else if (package_interface == PHY_INTERFACE_MODE_PSGMII) + val |= QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_ALL_COPPER; + ret = __phy_package_write(phydev, QCA807X_COMBO_ADDR, + QCA807X_CHIP_CONFIGURATION, val); + if (ret) + goto exit; + + /* After mode change Serdes reset is required */ + val = __phy_package_read(phydev, QCA807X_PQSGMII_ADDR, + PQSGMII_CTRL_REG); + val &= ~PQSGMII_ANALOG_SW_RESET; + ret = __phy_package_write(phydev, QCA807X_PQSGMII_ADDR, + PQSGMII_CTRL_REG, val); + if (ret) + goto exit; + + msleep(SERDES_RESET_SLEEP); + + val = __phy_package_read(phydev, QCA807X_PQSGMII_ADDR, + PQSGMII_CTRL_REG); + val |= PQSGMII_ANALOG_SW_RESET; + ret = __phy_package_write(phydev, QCA807X_PQSGMII_ADDR, + PQSGMII_CTRL_REG, val); + if (ret) + goto exit; + + /* Workaround to enable AZ transmitting ability */ + val = __phy_package_read_mmd(phydev, QCA807X_PQSGMII_ADDR, + MDIO_MMD_PMAPMD, PQSGMII_MODE_CTRL); + val &= ~PQSGMII_MODE_CTRL_AZ_WORKAROUND_MASK; + ret = __phy_package_write_mmd(phydev, QCA807X_PQSGMII_ADDR, + MDIO_MMD_PMAPMD, PQSGMII_MODE_CTRL, val); + if (ret) + goto exit; + + /* Set PQSGMII TX AMP strength */ + val = __phy_package_read(phydev, QCA807X_PQSGMII_ADDR, + PQSGMII_DRIVE_CONTROL_1); + val &= ~PQSGMII_TX_DRIVER_MASK; + val |= FIELD_PREP(PQSGMII_TX_DRIVER_MASK, tx_driver_strength); + ret = __phy_package_write(phydev, QCA807X_PQSGMII_ADDR, + PQSGMII_DRIVE_CONTROL_1, val); + if (ret) + goto exit; + + /* Prevent PSGMII going into hibernation via PSGMII self test */ + val = __phy_package_read_mmd(phydev, QCA807X_COMBO_ADDR, + MDIO_MMD_PCS, PQSGMII_MMD3_SERDES_CONTROL); + val &= ~BIT(1); + ret = __phy_package_write_mmd(phydev, QCA807X_COMBO_ADDR, + MDIO_MMD_PCS, PQSGMII_MMD3_SERDES_CONTROL, val); + +exit: + phy_unlock_mdio_bus(phydev); + + 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, + .handle_interrupt = qca807x_handle_interrupt, + .soft_reset = genphy_soft_reset, + .get_tunable = qca807x_get_tunable, + .set_tunable = qca807x_set_tunable, + .resume = genphy_resume, + .suspend = genphy_suspend, + .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, + .handle_interrupt = qca807x_handle_interrupt, + .soft_reset = genphy_soft_reset, + .get_tunable = qca807x_get_tunable, + .set_tunable = qca807x_set_tunable, + .resume = genphy_resume, + .suspend = genphy_suspend, + .cable_test_start = qca807x_cable_test_start, + .cable_test_get_status = qca807x_cable_test_get_status, + /* PHY package define */ + .phy_package_global_phy_num = ARRAY_SIZE(qca807x_global_phy_names), + .phy_package_global_phy_names = qca807x_global_phy_names, + .phy_package_config_init_once = qca807x_phy_package_config_init_once, + }, +}; +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) }, + { } +}; + +MODULE_AUTHOR("Robert Marko "); +MODULE_AUTHOR("Christian Marangi "); +MODULE_DESCRIPTION("Qualcomm QCA807x PHY driver"); +MODULE_DEVICE_TABLE(mdio, qca807x_tbl); +MODULE_LICENSE("GPL");