diff options
Diffstat (limited to 'kernel/drivers/net/phy/aquantia.c')
| -rw-r--r-- | kernel/drivers/net/phy/aquantia.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/kernel/drivers/net/phy/aquantia.c b/kernel/drivers/net/phy/aquantia.c new file mode 100644 index 000000000..f1936b7a7 --- /dev/null +++ b/kernel/drivers/net/phy/aquantia.c @@ -0,0 +1,188 @@ +/* + * Driver for Aquantia PHY + * + * Author: Shaohui Xie <Shaohui.Xie@freescale.com> + * + * Copyright 2015 Freescale Semiconductor, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/phy.h> +#include <linux/mdio.h> + +#define PHY_ID_AQ1202 0x03a1b445 +#define PHY_ID_AQ2104 0x03a1b460 +#define PHY_ID_AQR105 0x03a1b4a2 +#define PHY_ID_AQR405 0x03a1b4b0 + +#define PHY_AQUANTIA_FEATURES (SUPPORTED_10000baseT_Full | \ + SUPPORTED_1000baseT_Full | \ + SUPPORTED_100baseT_Full | \ + PHY_DEFAULT_FEATURES) + +static int aquantia_config_aneg(struct phy_device *phydev) +{ + phydev->supported = PHY_AQUANTIA_FEATURES; + phydev->advertising = phydev->supported; + + return 0; +} + +static int aquantia_aneg_done(struct phy_device *phydev) +{ + int reg; + + reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); + return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE); +} + +static int aquantia_config_intr(struct phy_device *phydev) +{ + int err; + + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { + err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 1); + if (err < 0) + return err; + + err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 1); + if (err < 0) + return err; + + err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0x1001); + } else { + err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 0); + if (err < 0) + return err; + + err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 0); + if (err < 0) + return err; + + err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0); + } + + return err; +} + +static int aquantia_ack_interrupt(struct phy_device *phydev) +{ + int reg; + + reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xcc01); + return (reg < 0) ? reg : 0; +} + +static int aquantia_read_status(struct phy_device *phydev) +{ + int reg; + + reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); + reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); + if (reg & MDIO_STAT1_LSTATUS) + phydev->link = 1; + else + phydev->link = 0; + + reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800); + mdelay(10); + reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800); + + switch (reg) { + case 0x9: + phydev->speed = SPEED_2500; + break; + case 0x5: + phydev->speed = SPEED_1000; + break; + case 0x3: + phydev->speed = SPEED_100; + break; + case 0x7: + default: + phydev->speed = SPEED_10000; + break; + } + phydev->duplex = DUPLEX_FULL; + + return 0; +} + +static struct phy_driver aquantia_driver[] = { +{ + .phy_id = PHY_ID_AQ1202, + .phy_id_mask = 0xfffffff0, + .name = "Aquantia AQ1202", + .features = PHY_AQUANTIA_FEATURES, + .flags = PHY_HAS_INTERRUPT, + .aneg_done = aquantia_aneg_done, + .config_aneg = aquantia_config_aneg, + .config_intr = aquantia_config_intr, + .ack_interrupt = aquantia_ack_interrupt, + .read_status = aquantia_read_status, + .driver = { .owner = THIS_MODULE,}, +}, +{ + .phy_id = PHY_ID_AQ2104, + .phy_id_mask = 0xfffffff0, + .name = "Aquantia AQ2104", + .features = PHY_AQUANTIA_FEATURES, + .flags = PHY_HAS_INTERRUPT, + .aneg_done = aquantia_aneg_done, + .config_aneg = aquantia_config_aneg, + .config_intr = aquantia_config_intr, + .ack_interrupt = aquantia_ack_interrupt, + .read_status = aquantia_read_status, + .driver = { .owner = THIS_MODULE,}, +}, +{ + .phy_id = PHY_ID_AQR105, + .phy_id_mask = 0xfffffff0, + .name = "Aquantia AQR105", + .features = PHY_AQUANTIA_FEATURES, + .flags = PHY_HAS_INTERRUPT, + .aneg_done = aquantia_aneg_done, + .config_aneg = aquantia_config_aneg, + .config_intr = aquantia_config_intr, + .ack_interrupt = aquantia_ack_interrupt, + .read_status = aquantia_read_status, + .driver = { .owner = THIS_MODULE,}, +}, +{ + .phy_id = PHY_ID_AQR405, + .phy_id_mask = 0xfffffff0, + .name = "Aquantia AQR405", + .features = PHY_AQUANTIA_FEATURES, + .flags = PHY_HAS_INTERRUPT, + .aneg_done = aquantia_aneg_done, + .config_aneg = aquantia_config_aneg, + .config_intr = aquantia_config_intr, + .ack_interrupt = aquantia_ack_interrupt, + .read_status = aquantia_read_status, + .driver = { .owner = THIS_MODULE,}, +}, +}; + +module_phy_driver(aquantia_driver); + +static struct mdio_device_id __maybe_unused aquantia_tbl[] = { + { PHY_ID_AQ1202, 0xfffffff0 }, + { PHY_ID_AQ2104, 0xfffffff0 }, + { PHY_ID_AQR105, 0xfffffff0 }, + { PHY_ID_AQR405, 0xfffffff0 }, + { } +}; + +MODULE_DEVICE_TABLE(mdio, aquantia_tbl); + +MODULE_DESCRIPTION("Aquantia PHY driver"); +MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>"); +MODULE_LICENSE("GPL v2"); |