From 377ecca9ba6d98f31517e2322075e94d1be94561 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Wed, 8 Dec 2010 23:05:13 +0000 Subject: phy: add the IC+ IP1001 driver This patch adds the IC+ IP1001 (Gigabit Ethernet Transceiver) driver. I've had to add an additional delay (2ns) to adjust RX clock phase at GMII/ RGMII interface (according to the PHY data-sheet). This helps to have the RGMII working on some ST platforms. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/phy/Kconfig | 2 +- drivers/net/phy/icplus.c | 59 ++++++++++++++++++++++++++++++++++++++++++++---- 2 files changed, 55 insertions(+), 6 deletions(-) diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index cb3d13e4e07..35fda5ac812 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -64,7 +64,7 @@ config BCM63XX_PHY config ICPLUS_PHY tristate "Drivers for ICPlus PHYs" ---help--- - Currently supports the IP175C PHY. + Currently supports the IP175C and IP1001 PHYs. config REALTEK_PHY tristate "Drivers for Realtek PHYs" diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c index c1d2d251fe8..9a09e24c30b 100644 --- a/drivers/net/phy/icplus.c +++ b/drivers/net/phy/icplus.c @@ -30,7 +30,7 @@ #include #include -MODULE_DESCRIPTION("ICPlus IP175C PHY driver"); +MODULE_DESCRIPTION("ICPlus IP175C/IC1001 PHY drivers"); MODULE_AUTHOR("Michael Barkowski"); MODULE_LICENSE("GPL"); @@ -89,6 +89,33 @@ static int ip175c_config_init(struct phy_device *phydev) return 0; } +static int ip1001_config_init(struct phy_device *phydev) +{ + int err, value; + + /* Software Reset PHY */ + value = phy_read(phydev, MII_BMCR); + 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); + + /* Additional delay (2ns) used to adjust RX clock phase + * at GMII/ RGMII interface */ + value = phy_read(phydev, 16); + value |= 0x3; + + err = phy_write(phydev, 16, value); + if (err < 0) + return err; + + return err; +} + static int ip175c_read_status(struct phy_device *phydev) { if (phydev->addr == 4) /* WAN port */ @@ -121,21 +148,43 @@ static struct phy_driver ip175c_driver = { .driver = { .owner = THIS_MODULE,}, }; -static int __init ip175c_init(void) +static struct phy_driver ip1001_driver = { + .phy_id = 0x02430d90, + .name = "ICPlus IP1001", + .phy_id_mask = 0x0ffffff0, + .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | + SUPPORTED_Asym_Pause, + .config_init = &ip1001_config_init, + .config_aneg = &genphy_config_aneg, + .read_status = &genphy_read_status, + .suspend = genphy_suspend, + .resume = genphy_resume, + .driver = { .owner = THIS_MODULE,}, +}; + +static int __init icplus_init(void) { + int ret = 0; + + ret = phy_driver_register(&ip1001_driver); + if (ret < 0) + return -ENODEV; + return phy_driver_register(&ip175c_driver); } -static void __exit ip175c_exit(void) +static void __exit icplus_exit(void) { + phy_driver_unregister(&ip1001_driver); phy_driver_unregister(&ip175c_driver); } -module_init(ip175c_init); -module_exit(ip175c_exit); +module_init(icplus_init); +module_exit(icplus_exit); static struct mdio_device_id __maybe_unused icplus_tbl[] = { { 0x02430d80, 0x0ffffff0 }, + { 0x02430d90, 0x0ffffff0 }, { } }; -- cgit v1.2.3-70-g09d2