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ste10Xp.c


products/Sources/formale Sprachen/C/Linux/drivers/net/phy/ste10Xp.c

// SPDX-License-Identifier: GPL-2.0+ /* * drivers/net/phy/ste10Xp.c * * Driver for STMicroelectronics STe10Xp PHYs * * Author: Giuseppe Cavallaro * * Copyright (c) 2008 STMicroelectronics Limited */ #include #include #include #include #include #include #include #include #include #include #define MII_XCIIS 0x11 /* Configuration Info IRQ & Status Reg */ #define MII_XIE 0x12 /* Interrupt Enable Register */ #define MII_XIE_DEFAULT_MASK 0x0070 /* ANE complete, Remote Fault, Link Down */ #define STE101P_PHY_ID 0x00061c50 #define STE100P_PHY_ID 0x1c040011 static int ste10Xp_config_init(struct phy_device *phydev) { int value, err; /* Software Reset PHY */ value = phy_read(phydev, MII_BMCR); if (value < 0) return value; value |= BMCR_RESET; err = phy_write(phydev, MII_BMCR, value); if (err < 0) return err; do { value = phy_read(phydev, MII_BMCR); } while (value & BMCR_RESET); return 0; } static int ste10Xp_ack_interrupt(struct phy_device *phydev) { int err = phy_read(phydev, MII_XCIIS); if (err < 0) return err; return 0; } static int ste10Xp_config_intr(struct phy_device *phydev) { int err; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { /* clear any pending interrupts */ err = ste10Xp_ack_interrupt(phydev); if (err) return err; /* Enable all STe101P interrupts (PR12) */ err = phy_write(phydev, MII_XIE, MII_XIE_DEFAULT_MASK); } else { err = phy_write(phydev, MII_XIE, 0); if (err) return err; err = ste10Xp_ack_interrupt(phydev); } return err; } static irqreturn_t ste10Xp_handle_interrupt(struct phy_device *phydev) { int irq_status; irq_status = phy_read(phydev, MII_XCIIS); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; } if (!(irq_status & MII_XIE_DEFAULT_MASK)) return IRQ_NONE; phy_trigger_machine(phydev); return IRQ_HANDLED; } static struct phy_driver ste10xp_pdriver[] = { { .phy_id = STE101P_PHY_ID, .phy_id_mask = 0xfffffff0, .name = "STe101p", /* PHY_BASIC_FEATURES */ .config_init = ste10Xp_config_init, .config_intr = ste10Xp_config_intr, .handle_interrupt = ste10Xp_handle_interrupt, .suspend = genphy_suspend, .resume = genphy_resume, }, { .phy_id = STE100P_PHY_ID, .phy_id_mask = 0xffffffff, .name = "STe100p", /* PHY_BASIC_FEATURES */ .config_init = ste10Xp_config_init, .config_intr = ste10Xp_config_intr, .handle_interrupt = ste10Xp_handle_interrupt, .suspend = genphy_suspend, .resume = genphy_resume, } }; module_phy_driver(ste10xp_pdriver); static const struct mdio_device_id __maybe_unused ste10Xp_tbl[] = { { STE101P_PHY_ID, 0xfffffff0 }, { STE100P_PHY_ID, 0xffffffff }, { } }; MODULE_DEVICE_TABLE(mdio, ste10Xp_tbl); MODULE_DESCRIPTION("STMicroelectronics STe10Xp PHY driver"); MODULE_AUTHOR("Giuseppe Cavallaro "); MODULE_LICENSE("GPL");

                                                                                                                                                                                                                                                                                                                                                                                                     

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