| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dan Murphy | 1326 | 100.00% | 1 | 100.00% |
| Total | 1326 | 1 |
/* * Driver for the Texas Instruments DP83822 PHY * * Copyright (C) 2017 Texas Instruments Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #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 DP83822_DEVADDR 0x1f #define MII_DP83822_PHYSCR 0x11 #define MII_DP83822_MISR1 0x12 #define MII_DP83822_MISR2 0x13 #define MII_DP83822_RESET_CTRL 0x1f #define DP83822_HW_RESET BIT(15) #define DP83822_SW_RESET BIT(14) /* 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) static int dp83822_ack_interrupt(struct phy_device *phydev) { int err; err = phy_read(phydev, MII_DP83822_MISR1); if (err < 0) return err; err = phy_read(phydev, MII_DP83822_MISR2); if (err < 0) return err; return 0; } 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; } value |= (DP83822_WOL_EN | DP83822_WOL_INDICATION_SEL | DP83822_WOL_CLR_INDICATION); phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, value); } else { value = phy_read_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG); value &= ~DP83822_WOL_EN; phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, value); } return 0; } 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) { 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_ANEG_COMPLETE_INT_EN | DP83822_DUP_MODE_CHANGE_INT_EN | DP83822_SPEED_CHANGED_INT_EN | DP83822_LINK_STAT_INT_EN | DP83822_ENERGY_DET_INT_EN | DP83822_LINK_QUAL_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_WOL_PKT_INT_EN | DP83822_SLEEP_MODE_INT_EN | DP83822_MDI_XOVER_INT_EN | DP83822_LB_FIFO_INT_EN | DP83822_PAGE_RX_INT_EN | DP83822_ANEG_ERR_INT_EN | DP83822_EEE_ERROR_CHANGE_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 int dp83822_config_init(struct phy_device *phydev) { int err; int value; err = genphy_config_init(phydev); if (err < 0) return err; value = DP83822_WOL_MAGIC_EN | DP83822_WOL_SECURE_ON | DP83822_WOL_EN; return phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG, value); } static int dp83822_phy_reset(struct phy_device *phydev) { int err; err = phy_write(phydev, MII_DP83822_RESET_CTRL, DP83822_HW_RESET); if (err < 0) return err; dp83822_config_init(phydev); 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; } static struct phy_driver dp83822_driver[] = { { .phy_id = DP83822_PHY_ID, .phy_id_mask = 0xfffffff0, .name = "TI DP83822", .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_init = dp83822_config_init, .soft_reset = dp83822_phy_reset, .get_wol = dp83822_get_wol, .set_wol = dp83822_set_wol, .ack_interrupt = dp83822_ack_interrupt, .config_intr = dp83822_config_intr, .suspend = dp83822_suspend, .resume = dp83822_resume, }, }; module_phy_driver(dp83822_driver); static struct mdio_device_id __maybe_unused dp83822_tbl[] = { { DP83822_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");
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