| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dan Murphy | 2286 | 93.65% | 8 | 53.33% |
| Ioana Ciornei | 134 | 5.49% | 3 | 20.00% |
| Michael Walle | 12 | 0.49% | 1 | 6.67% |
| Marek Vašut | 5 | 0.20% | 1 | 6.67% |
| Heiner Kallweit | 2 | 0.08% | 1 | 6.67% |
| Andrew Lunn | 2 | 0.08% | 1 | 6.67% |
| Total | 2441 | 15 |
// SPDX-License-Identifier: GPL-2.0 /* Driver for the Texas Instruments DP83822, DP83825 and DP83826 PHYs. * * Copyright (C) 2017 Texas Instruments Inc. */ #include <linux/ethtool.h> #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/mii.h> #include <linux/module.h> #include <linux/of.h> #include <linux/phy.h> #include <linux/netdevice.h> #define DP83822_PHY_ID 0x2000a240 #define DP83825S_PHY_ID 0x2000a140 #define DP83825I_PHY_ID 0x2000a150 #define DP83825CM_PHY_ID 0x2000a160 #define DP83825CS_PHY_ID 0x2000a170 #define DP83826C_PHY_ID 0x2000a130 #define DP83826NC_PHY_ID 0x2000a110 #define DP83822_DEVADDR 0x1f #define MII_DP83822_CTRL_2 0x0a #define MII_DP83822_PHYSTS 0x10 #define MII_DP83822_PHYSCR 0x11 #define MII_DP83822_MISR1 0x12 #define MII_DP83822_MISR2 0x13 #define MII_DP83822_FCSCR 0x14 #define MII_DP83822_RCSR 0x17 #define MII_DP83822_RESET_CTRL 0x1f #define MII_DP83822_GENCFG 0x465 #define MII_DP83822_SOR1 0x467 /* GENCFG */ #define DP83822_SIG_DET_LOW BIT(0) /* Control Register 2 bits */ #define DP83822_FX_ENABLE BIT(14) #define DP83822_HW_RESET BIT(15) #define DP83822_SW_RESET BIT(14) /* PHY STS bits */ #define DP83822_PHYSTS_DUPLEX BIT(2) #define DP83822_PHYSTS_10 BIT(1) #define DP83822_PHYSTS_LINK BIT(0) /* PHYSCR Register Fields */ #define DP83822_PHYSCR_INT_OE BIT(0) /* Interrupt Output Enable */ #define DP83822_PHYSCR_INTEN BIT(1) /* Interrupt Enable */ /* MISR1 bits */ #define DP83822_RX_ERR_HF_INT_EN BIT(0) #define DP83822_FALSE_CARRIER_HF_INT_EN BIT(1) #define DP83822_ANEG_COMPLETE_INT_EN BIT(2) #define DP83822_DUP_MODE_CHANGE_INT_EN BIT(3) #define DP83822_SPEED_CHANGED_INT_EN BIT(4) #define DP83822_LINK_STAT_INT_EN BIT(5) #define DP83822_ENERGY_DET_INT_EN BIT(6) #define DP83822_LINK_QUAL_INT_EN BIT(7) /* MISR2 bits */ #define DP83822_JABBER_DET_INT_EN BIT(0) #define DP83822_WOL_PKT_INT_EN BIT(1) #define DP83822_SLEEP_MODE_INT_EN BIT(2) #define DP83822_MDI_XOVER_INT_EN BIT(3) #define DP83822_LB_FIFO_INT_EN BIT(4) #define DP83822_PAGE_RX_INT_EN BIT(5) #define DP83822_ANEG_ERR_INT_EN BIT(6) #define DP83822_EEE_ERROR_CHANGE_INT_EN BIT(7) /* INT_STAT1 bits */ #define DP83822_WOL_INT_EN BIT(4) #define DP83822_WOL_INT_STAT BIT(12) #define MII_DP83822_RXSOP1 0x04a5 #define MII_DP83822_RXSOP2 0x04a6 #define MII_DP83822_RXSOP3 0x04a7 /* WoL Registers */ #define MII_DP83822_WOL_CFG 0x04a0 #define MII_DP83822_WOL_STAT 0x04a1 #define MII_DP83822_WOL_DA1 0x04a2 #define MII_DP83822_WOL_DA2 0x04a3 #define MII_DP83822_WOL_DA3 0x04a4 /* WoL bits */ #define DP83822_WOL_MAGIC_EN BIT(0) #define DP83822_WOL_SECURE_ON BIT(5) #define DP83822_WOL_EN BIT(7) #define DP83822_WOL_INDICATION_SEL BIT(8) #define DP83822_WOL_CLR_INDICATION BIT(11) /* RSCR bits */ #define DP83822_RX_CLK_SHIFT BIT(12) #define DP83822_TX_CLK_SHIFT BIT(11) /* SOR1 mode */ #define DP83822_STRAP_MODE1 0 #define DP83822_STRAP_MODE2 BIT(0) #define DP83822_STRAP_MODE3 BIT(1) #define DP83822_STRAP_MODE4 GENMASK(1, 0) #define DP83822_COL_STRAP_MASK GENMASK(11, 10) #define DP83822_COL_SHIFT 10 #define DP83822_RX_ER_STR_MASK GENMASK(9, 8) #define DP83822_RX_ER_SHIFT 8 #define MII_DP83822_FIBER_ADVERTISE (ADVERTISED_TP | ADVERTISED_MII | \ ADVERTISED_FIBRE | \ ADVERTISED_Pause | ADVERTISED_Asym_Pause) struct dp83822_private { bool fx_signal_det_low; int fx_enabled; u16 fx_sd_enable; }; static int dp83822_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { struct net_device *ndev = phydev->attached_dev; u16 value; const u8 *mac; if (wol->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) { mac = (const u8 *)ndev->dev_addr; if (!is_valid_ether_addr(mac)) return -EINVAL; /* MAC addresses start with byte 5, but stored in mac[0]. * 822 PHYs store bytes 4|5, 2|3, 0|1 */ phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_DA1, (mac[1] << 8) | mac[0]); phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_DA2, (mac[3] << 8) | mac[2]); phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_DA3, (mac[5] << 8) | mac[4]); value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG); if (wol->wolopts & WAKE_MAGIC) value |= DP83822_WOL_MAGIC_EN; else value &= ~DP83822_WOL_MAGIC_EN; if (wol->wolopts & WAKE_MAGICSECURE) { phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RXSOP1, (wol->sopass[1] << 8) | wol->sopass[0]); phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RXSOP2, (wol->sopass[3] << 8) | wol->sopass[2]); phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RXSOP3, (wol->sopass[5] << 8) | wol->sopass[4]); value |= DP83822_WOL_SECURE_ON; } else { value &= ~DP83822_WOL_SECURE_ON; } /* Clear any pending WoL interrupt */ phy_read(phydev, MII_DP83822_MISR2); value |= DP83822_WOL_EN | DP83822_WOL_INDICATION_SEL | DP83822_WOL_CLR_INDICATION; return phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, value); } else { return phy_clear_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, DP83822_WOL_EN); } } static void dp83822_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { int value; u16 sopass_val; wol->supported = (WAKE_MAGIC | WAKE_MAGICSECURE); wol->wolopts = 0; value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG); if (value & DP83822_WOL_MAGIC_EN) wol->wolopts |= WAKE_MAGIC; if (value & DP83822_WOL_SECURE_ON) { sopass_val = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RXSOP1); wol->sopass[0] = (sopass_val & 0xff); wol->sopass[1] = (sopass_val >> 8); sopass_val = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RXSOP2); wol->sopass[2] = (sopass_val & 0xff); wol->sopass[3] = (sopass_val >> 8); sopass_val = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RXSOP3); wol->sopass[4] = (sopass_val & 0xff); wol->sopass[5] = (sopass_val >> 8); wol->wolopts |= WAKE_MAGICSECURE; } /* WoL is not enabled so set wolopts to 0 */ if (!(value & DP83822_WOL_EN)) wol->wolopts = 0; } static int dp83822_config_intr(struct phy_device *phydev) { struct dp83822_private *dp83822 = phydev->priv; int misr_status; int physcr_status; int err; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { misr_status = phy_read(phydev, MII_DP83822_MISR1); if (misr_status < 0) return misr_status; misr_status |= (DP83822_RX_ERR_HF_INT_EN | DP83822_FALSE_CARRIER_HF_INT_EN | DP83822_LINK_STAT_INT_EN | DP83822_ENERGY_DET_INT_EN | DP83822_LINK_QUAL_INT_EN); if (!dp83822->fx_enabled) misr_status |= DP83822_ANEG_COMPLETE_INT_EN | DP83822_DUP_MODE_CHANGE_INT_EN | DP83822_SPEED_CHANGED_INT_EN; err = phy_write(phydev, MII_DP83822_MISR1, misr_status); if (err < 0) return err; misr_status = phy_read(phydev, MII_DP83822_MISR2); if (misr_status < 0) return misr_status; misr_status |= (DP83822_JABBER_DET_INT_EN | DP83822_SLEEP_MODE_INT_EN | DP83822_LB_FIFO_INT_EN | DP83822_PAGE_RX_INT_EN | DP83822_EEE_ERROR_CHANGE_INT_EN); if (!dp83822->fx_enabled) misr_status |= DP83822_MDI_XOVER_INT_EN | DP83822_ANEG_ERR_INT_EN | DP83822_WOL_PKT_INT_EN; err = phy_write(phydev, MII_DP83822_MISR2, misr_status); if (err < 0) return err; physcr_status = phy_read(phydev, MII_DP83822_PHYSCR); if (physcr_status < 0) return physcr_status; physcr_status |= DP83822_PHYSCR_INT_OE | DP83822_PHYSCR_INTEN; } else { err = phy_write(phydev, MII_DP83822_MISR1, 0); if (err < 0) return err; err = phy_write(phydev, MII_DP83822_MISR1, 0); if (err < 0) return err; physcr_status = phy_read(phydev, MII_DP83822_PHYSCR); if (physcr_status < 0) return physcr_status; physcr_status &= ~DP83822_PHYSCR_INTEN; } return phy_write(phydev, MII_DP83822_PHYSCR, physcr_status); } static irqreturn_t dp83822_handle_interrupt(struct phy_device *phydev) { bool trigger_machine = false; int irq_status; /* The MISR1 and MISR2 registers are holding the interrupt status in * the upper half (15:8), while the lower half (7:0) is used for * controlling the interrupt enable state of those individual interrupt * sources. To determine the possible interrupt sources, just read the * MISR* register and use it directly to know which interrupts have * been enabled previously or not. */ irq_status = phy_read(phydev, MII_DP83822_MISR1); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; } if (irq_status & ((irq_status & GENMASK(7, 0)) << 8)) trigger_machine = true; irq_status = phy_read(phydev, MII_DP83822_MISR2); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; } if (irq_status & ((irq_status & GENMASK(7, 0)) << 8)) trigger_machine = true; if (!trigger_machine) return IRQ_NONE; phy_trigger_machine(phydev); return IRQ_HANDLED; } static int dp8382x_disable_wol(struct phy_device *phydev) { return phy_clear_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, DP83822_WOL_EN | DP83822_WOL_MAGIC_EN | DP83822_WOL_SECURE_ON); } static int dp83822_read_status(struct phy_device *phydev) { struct dp83822_private *dp83822 = phydev->priv; int status = phy_read(phydev, MII_DP83822_PHYSTS); int ctrl2; int ret; if (dp83822->fx_enabled) { if (status & DP83822_PHYSTS_LINK) { phydev->speed = SPEED_UNKNOWN; phydev->duplex = DUPLEX_UNKNOWN; } else { ctrl2 = phy_read(phydev, MII_DP83822_CTRL_2); if (ctrl2 < 0) return ctrl2; if (!(ctrl2 & DP83822_FX_ENABLE)) { ret = phy_write(phydev, MII_DP83822_CTRL_2, DP83822_FX_ENABLE | ctrl2); if (ret < 0) return ret; } } } ret = genphy_read_status(phydev); if (ret) return ret; if (status < 0) return status; if (status & DP83822_PHYSTS_DUPLEX) phydev->duplex = DUPLEX_FULL; else phydev->duplex = DUPLEX_HALF; if (status & DP83822_PHYSTS_10) phydev->speed = SPEED_10; else phydev->speed = SPEED_100; return 0; } static int dp83822_config_init(struct phy_device *phydev) { struct dp83822_private *dp83822 = phydev->priv; struct device *dev = &phydev->mdio.dev; int rgmii_delay; s32 rx_int_delay; s32 tx_int_delay; int err = 0; int bmcr; if (phy_interface_is_rgmii(phydev)) { rx_int_delay = phy_get_internal_delay(phydev, dev, NULL, 0, true); if (rx_int_delay <= 0) rgmii_delay = 0; else rgmii_delay = DP83822_RX_CLK_SHIFT; tx_int_delay = phy_get_internal_delay(phydev, dev, NULL, 0, false); if (tx_int_delay <= 0) rgmii_delay &= ~DP83822_TX_CLK_SHIFT; else rgmii_delay |= DP83822_TX_CLK_SHIFT; if (rgmii_delay) { err = phy_set_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RCSR, rgmii_delay); if (err) return err; } } if (dp83822->fx_enabled) { err = phy_modify(phydev, MII_DP83822_CTRL_2, DP83822_FX_ENABLE, 1); if (err < 0) return err; /* Only allow advertising what this PHY supports */ linkmode_and(phydev->advertising, phydev->advertising, phydev->supported); linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported); linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->advertising); linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT, phydev->supported); linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT, phydev->supported); linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT, phydev->advertising); linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT, phydev->advertising); /* Auto neg is not supported in fiber mode */ bmcr = phy_read(phydev, MII_BMCR); if (bmcr < 0) return bmcr; if (bmcr & BMCR_ANENABLE) { err = phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0); if (err < 0) return err; } phydev->autoneg = AUTONEG_DISABLE; linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported); linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->advertising); /* Setup fiber advertisement */ err = phy_modify_changed(phydev, MII_ADVERTISE, MII_DP83822_FIBER_ADVERTISE, MII_DP83822_FIBER_ADVERTISE); if (err < 0) return err; if (dp83822->fx_signal_det_low) { err = phy_set_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_GENCFG, DP83822_SIG_DET_LOW); if (err) return err; } } return dp8382x_disable_wol(phydev); } static int dp8382x_config_init(struct phy_device *phydev) { return dp8382x_disable_wol(phydev); } static int dp83822_phy_reset(struct phy_device *phydev) { int err; err = phy_write(phydev, MII_DP83822_RESET_CTRL, DP83822_SW_RESET); if (err < 0) return err; return phydev->drv->config_init(phydev); } #ifdef CONFIG_OF_MDIO static int dp83822_of_init(struct phy_device *phydev) { struct dp83822_private *dp83822 = phydev->priv; struct device *dev = &phydev->mdio.dev; /* Signal detection for the PHY is only enabled if the FX_EN and the * SD_EN pins are strapped. Signal detection can only enabled if FX_EN * is strapped otherwise signal detection is disabled for the PHY. */ if (dp83822->fx_enabled && dp83822->fx_sd_enable) dp83822->fx_signal_det_low = device_property_present(dev, "ti,link-loss-low"); if (!dp83822->fx_enabled) dp83822->fx_enabled = device_property_present(dev, "ti,fiber-mode"); return 0; } #else static int dp83822_of_init(struct phy_device *phydev) { return 0; } #endif /* CONFIG_OF_MDIO */ static int dp83822_read_straps(struct phy_device *phydev) { struct dp83822_private *dp83822 = phydev->priv; int fx_enabled, fx_sd_enable; int val; val = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_SOR1); if (val < 0) return val; fx_enabled = (val & DP83822_COL_STRAP_MASK) >> DP83822_COL_SHIFT; if (fx_enabled == DP83822_STRAP_MODE2 || fx_enabled == DP83822_STRAP_MODE3) dp83822->fx_enabled = 1; if (dp83822->fx_enabled) { fx_sd_enable = (val & DP83822_RX_ER_STR_MASK) >> DP83822_RX_ER_SHIFT; if (fx_sd_enable == DP83822_STRAP_MODE3 || fx_sd_enable == DP83822_STRAP_MODE4) dp83822->fx_sd_enable = 1; } return 0; } static int dp83822_probe(struct phy_device *phydev) { struct dp83822_private *dp83822; int ret; dp83822 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83822), GFP_KERNEL); if (!dp83822) return -ENOMEM; phydev->priv = dp83822; ret = dp83822_read_straps(phydev); if (ret) return ret; dp83822_of_init(phydev); if (dp83822->fx_enabled) phydev->port = PORT_FIBRE; return 0; } static int dp83822_suspend(struct phy_device *phydev) { int value; value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG); if (!(value & DP83822_WOL_EN)) genphy_suspend(phydev); return 0; } static int dp83822_resume(struct phy_device *phydev) { int value; genphy_resume(phydev); value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG); phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, value | DP83822_WOL_CLR_INDICATION); return 0; } #define DP83822_PHY_DRIVER(_id, _name) \ { \ PHY_ID_MATCH_MODEL(_id), \ .name = (_name), \ /* PHY_BASIC_FEATURES */ \ .probe = dp83822_probe, \ .soft_reset = dp83822_phy_reset, \ .config_init = dp83822_config_init, \ .read_status = dp83822_read_status, \ .get_wol = dp83822_get_wol, \ .set_wol = dp83822_set_wol, \ .config_intr = dp83822_config_intr, \ .handle_interrupt = dp83822_handle_interrupt, \ .suspend = dp83822_suspend, \ .resume = dp83822_resume, \ } #define DP8382X_PHY_DRIVER(_id, _name) \ { \ PHY_ID_MATCH_MODEL(_id), \ .name = (_name), \ /* PHY_BASIC_FEATURES */ \ .soft_reset = dp83822_phy_reset, \ .config_init = dp8382x_config_init, \ .get_wol = dp83822_get_wol, \ .set_wol = dp83822_set_wol, \ .config_intr = dp83822_config_intr, \ .handle_interrupt = dp83822_handle_interrupt, \ .suspend = dp83822_suspend, \ .resume = dp83822_resume, \ } static struct phy_driver dp83822_driver[] = { DP83822_PHY_DRIVER(DP83822_PHY_ID, "TI DP83822"), DP8382X_PHY_DRIVER(DP83825I_PHY_ID, "TI DP83825I"), DP8382X_PHY_DRIVER(DP83826C_PHY_ID, "TI DP83826C"), DP8382X_PHY_DRIVER(DP83826NC_PHY_ID, "TI DP83826NC"), DP8382X_PHY_DRIVER(DP83825S_PHY_ID, "TI DP83825S"), DP8382X_PHY_DRIVER(DP83825CM_PHY_ID, "TI DP83825M"), DP8382X_PHY_DRIVER(DP83825CS_PHY_ID, "TI DP83825CS"), }; module_phy_driver(dp83822_driver); static struct mdio_device_id __maybe_unused dp83822_tbl[] = { { DP83822_PHY_ID, 0xfffffff0 }, { DP83825I_PHY_ID, 0xfffffff0 }, { DP83826C_PHY_ID, 0xfffffff0 }, { DP83826NC_PHY_ID, 0xfffffff0 }, { DP83825S_PHY_ID, 0xfffffff0 }, { DP83825CM_PHY_ID, 0xfffffff0 }, { DP83825CS_PHY_ID, 0xfffffff0 }, { }, }; MODULE_DEVICE_TABLE(mdio, dp83822_tbl); MODULE_DESCRIPTION("Texas Instruments DP83822 PHY driver"); MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com"); MODULE_LICENSE("GPL v2");
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