// SPDX-License-Identifier: GPL-2.0+ /* Copyright (C) 2021 Maxlinear Corporation * Copyright (C) 2020 Intel Corporation * * Drivers for Maxlinear Ethernet GPY * */ #include <linux/module.h> #include <linux/bitfield.h> #include <linux/hwmon.h> #include <linux/mutex.h> #include <linux/phy.h> #include <linux/polynomial.h> #include <linux/property.h> #include <linux/netdevice.h> /* PHY ID */ #define PHY_ID_GPYx15B_MASK … #define PHY_ID_GPY21xB_MASK … #define PHY_ID_GPY2xx … #define PHY_ID_GPY115B … #define PHY_ID_GPY115C … #define PHY_ID_GPY211B … #define PHY_ID_GPY211C … #define PHY_ID_GPY212B … #define PHY_ID_GPY212C … #define PHY_ID_GPY215B … #define PHY_ID_GPY215C … #define PHY_ID_GPY241B … #define PHY_ID_GPY241BM … #define PHY_ID_GPY245B … #define PHY_CTL1 … #define PHY_CTL1_MDICD … #define PHY_CTL1_MDIAB … #define PHY_CTL1_AMDIX … #define PHY_MIISTAT … #define PHY_IMASK … #define PHY_ISTAT … #define PHY_FWV … #define PHY_MIISTAT_SPD_MASK … #define PHY_MIISTAT_DPX … #define PHY_MIISTAT_LS … #define PHY_MIISTAT_SPD_10 … #define PHY_MIISTAT_SPD_100 … #define PHY_MIISTAT_SPD_1000 … #define PHY_MIISTAT_SPD_2500 … #define PHY_IMASK_WOL … #define PHY_IMASK_ANC … #define PHY_IMASK_ADSC … #define PHY_IMASK_DXMC … #define PHY_IMASK_LSPC … #define PHY_IMASK_LSTC … #define PHY_IMASK_MASK … #define PHY_FWV_REL_MASK … #define PHY_FWV_MAJOR_MASK … #define PHY_FWV_MINOR_MASK … #define PHY_PMA_MGBT_POLARITY … #define PHY_MDI_MDI_X_MASK … #define PHY_MDI_MDI_X_NORMAL … #define PHY_MDI_MDI_X_AB … #define PHY_MDI_MDI_X_CD … #define PHY_MDI_MDI_X_CROSS … /* SGMII */ #define VSPEC1_SGMII_CTRL … #define VSPEC1_SGMII_CTRL_ANEN … #define VSPEC1_SGMII_CTRL_ANRS … #define VSPEC1_SGMII_ANEN_ANRS … /* Temperature sensor */ #define VSPEC1_TEMP_STA … #define VSPEC1_TEMP_STA_DATA … /* Mailbox */ #define VSPEC1_MBOX_DATA … #define VSPEC1_MBOX_ADDRLO … #define VSPEC1_MBOX_CMD … #define VSPEC1_MBOX_CMD_ADDRHI … #define VSPEC1_MBOX_CMD_RD … #define VSPEC1_MBOX_CMD_READY … /* WoL */ #define VPSPEC2_WOL_CTL … #define VPSPEC2_WOL_AD01 … #define VPSPEC2_WOL_AD23 … #define VPSPEC2_WOL_AD45 … #define WOL_EN … /* Internal registers, access via mbox */ #define REG_GPIO0_OUT … struct gpy_priv { … }; static const struct { … } ver_need_sgmii_reaneg[] = …; #if IS_ENABLED(CONFIG_HWMON) /* The original translation formulae of the temperature (in degrees of Celsius) * are as follows: * * T = -2.5761e-11*(N^4) + 9.7332e-8*(N^3) + -1.9165e-4*(N^2) + * 3.0762e-1*(N^1) + -5.2156e1 * * where [-52.156, 137.961]C and N = [0, 1023]. * * They must be accordingly altered to be suitable for the integer arithmetics. * The technique is called 'factor redistribution', which just makes sure the * multiplications and divisions are made so to have a result of the operations * within the integer numbers limit. In addition we need to translate the * formulae to accept millidegrees of Celsius. Here what it looks like after * the alterations: * * T = -25761e-12*(N^4) + 97332e-9*(N^3) + -191650e-6*(N^2) + * 307620e-3*(N^1) + -52156 * * where T = [-52156, 137961]mC and N = [0, 1023]. */ static const struct polynomial poly_N_to_temp = …; static int gpy_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *value) { … } static umode_t gpy_hwmon_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static const struct hwmon_channel_info * const gpy_hwmon_info[] = …; static const struct hwmon_ops gpy_hwmon_hwmon_ops = …; static const struct hwmon_chip_info gpy_hwmon_chip_info = …; static int gpy_hwmon_register(struct phy_device *phydev) { … } #else static int gpy_hwmon_register(struct phy_device *phydev) { return 0; } #endif static int gpy_ack_interrupt(struct phy_device *phydev) { … } static int gpy_mbox_read(struct phy_device *phydev, u32 addr) { … } static int gpy_config_init(struct phy_device *phydev) { … } static int gpy21x_config_init(struct phy_device *phydev) { … } static int gpy_probe(struct phy_device *phydev) { … } static bool gpy_sgmii_need_reaneg(struct phy_device *phydev) { … } static bool gpy_2500basex_chk(struct phy_device *phydev) { … } static bool gpy_sgmii_aneg_en(struct phy_device *phydev) { … } static int gpy_config_mdix(struct phy_device *phydev, u8 ctrl) { … } static int gpy_config_aneg(struct phy_device *phydev) { … } static int gpy_update_mdix(struct phy_device *phydev) { … } static int gpy_update_interface(struct phy_device *phydev) { … } static int gpy_read_status(struct phy_device *phydev) { … } static int gpy_config_intr(struct phy_device *phydev) { … } static irqreturn_t gpy_handle_interrupt(struct phy_device *phydev) { … } static int gpy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { … } static void gpy_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { … } static int gpy_loopback(struct phy_device *phydev, bool enable) { … } static int gpy115_loopback(struct phy_device *phydev, bool enable) { … } static struct phy_driver gpy_drivers[] = …; module_phy_driver(gpy_drivers); static struct mdio_device_id __maybe_unused gpy_tbl[] = …; MODULE_DEVICE_TABLE(mdio, gpy_tbl); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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