From 02dc1f3d613d5a859513d7416c9aca370425a7e0 Mon Sep 17 00:00:00 2001 From: Woojung Huh Date: Wed, 7 Dec 2016 20:26:25 +0000 Subject: [PATCH] lan78xx: add LAN7801 MAC only support Add LAN7801 MAC only support with phy fixup functions. Signed-off-by: Woojung Huh Signed-off-by: David S. Miller --- drivers/net/usb/Kconfig | 5 ++ drivers/net/usb/lan78xx.c | 109 +++++++++++++++++++++++++++++++++++++- drivers/net/usb/lan78xx.h | 14 +++++ 3 files changed, 126 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig index cdde59089f72..3dd490f53e48 100644 --- a/drivers/net/usb/Kconfig +++ b/drivers/net/usb/Kconfig @@ -114,6 +114,11 @@ config USB_LAN78XX help This option adds support for Microchip LAN78XX based USB 2 & USB 3 10/100/1000 Ethernet adapters. + LAN7800 : USB 3 to 10/100/1000 Ethernet adapter + LAN7850 : USB 2 to 10/100/1000 Ethernet adapter + LAN7801 : USB 3 to 10/100/1000 Ethernet adapter (MAC only) + + Proper PHY driver is required for LAN7801. To compile this driver as a module, choose M here: the module will be called lan78xx. diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 019f758953fc..08f8703e4d54 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -40,7 +40,7 @@ #define DRIVER_AUTHOR "WOOJUNG HUH " #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" #define DRIVER_NAME "lan78xx" -#define DRIVER_VERSION "1.0.5" +#define DRIVER_VERSION "1.0.6" #define TX_TIMEOUT_JIFFIES (5 * HZ) #define THROTTLE_JIFFIES (HZ / 8) @@ -67,6 +67,7 @@ #define LAN78XX_USB_VENDOR_ID (0x0424) #define LAN7800_USB_PRODUCT_ID (0x7800) #define LAN7850_USB_PRODUCT_ID (0x7850) +#define LAN7801_USB_PRODUCT_ID (0x7801) #define LAN78XX_EEPROM_MAGIC (0x78A5) #define LAN78XX_OTP_MAGIC (0x78F3) @@ -390,6 +391,7 @@ struct lan78xx_net { u32 chipid; u32 chiprev; struct mii_bus *mdiobus; + phy_interface_t interface; int fc_autoneg; u8 fc_request_control; @@ -400,6 +402,10 @@ struct lan78xx_net { struct irq_domain_data domain_data; }; +/* define external phy id */ +#define PHY_LAN8835 (0x0007C130) +#define PHY_KSZ9031RNX (0x00221620) + /* use ethtool to change the level for any given device */ static int msg_level = -1; module_param(msg_level, int, 0); @@ -1697,6 +1703,7 @@ static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) done: mutex_unlock(&dev->phy_mutex); usb_autopm_put_interface(dev->intf); + return ret; } @@ -1759,6 +1766,10 @@ static int lan78xx_mdio_init(struct lan78xx_net *dev) /* set to internal PHY id */ dev->mdiobus->phy_mask = ~(1 << 1); break; + case ID_REV_CHIP_ID_7801_: + /* scan thru PHYAD[2..0] */ + dev->mdiobus->phy_mask = ~(0xFF); + break; } ret = mdiobus_register(dev->mdiobus); @@ -1933,6 +1944,47 @@ static void lan78xx_remove_irq_domain(struct lan78xx_net *dev) dev->domain_data.irqdomain = NULL; } +static int lan8835_fixup(struct phy_device *phydev) +{ + int buf; + int ret; + struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); + + /* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */ + buf = phy_read_mmd_indirect(phydev, 0x8010, 3); + buf &= ~0x1800; + buf |= 0x0800; + phy_write_mmd_indirect(phydev, 0x8010, 3, buf); + + /* RGMII MAC TXC Delay Enable */ + ret = lan78xx_write_reg(dev, MAC_RGMII_ID, + MAC_RGMII_ID_TXC_DELAY_EN_); + + /* RGMII TX DLL Tune Adjust */ + ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); + + dev->interface = PHY_INTERFACE_MODE_RGMII_TXID; + + return 1; +} + +static int ksz9031rnx_fixup(struct phy_device *phydev) +{ + struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); + + /* Micrel9301RNX PHY configuration */ + /* RGMII Control Signal Pad Skew */ + phy_write_mmd_indirect(phydev, 4, 2, 0x0077); + /* RGMII RX Data Pad Skew */ + phy_write_mmd_indirect(phydev, 5, 2, 0x7777); + /* RGMII RX Clock Pad Skew */ + phy_write_mmd_indirect(phydev, 8, 2, 0x1FF); + + dev->interface = PHY_INTERFACE_MODE_RGMII_RXID; + + return 1; +} + static int lan78xx_phy_init(struct lan78xx_net *dev) { int ret; @@ -1945,6 +1997,42 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) return -EIO; } + if ((dev->chipid == ID_REV_CHIP_ID_7800_) || + (dev->chipid == ID_REV_CHIP_ID_7850_)) { + phydev->is_internal = true; + dev->interface = PHY_INTERFACE_MODE_GMII; + + } else if (dev->chipid == ID_REV_CHIP_ID_7801_) { + if (!phydev->drv) { + netdev_err(dev->net, "no PHY driver found\n"); + return -EIO; + } + + dev->interface = PHY_INTERFACE_MODE_RGMII; + + /* external PHY fixup for KSZ9031RNX */ + ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0, + ksz9031rnx_fixup); + if (ret < 0) { + netdev_err(dev->net, "fail to register fixup\n"); + return ret; + } + /* external PHY fixup for LAN8835 */ + ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0, + lan8835_fixup); + if (ret < 0) { + netdev_err(dev->net, "fail to register fixup\n"); + return ret; + } + /* add more external PHY fixup here if needed */ + + phydev->is_internal = false; + } else { + netdev_err(dev->net, "unknown ID found\n"); + ret = -EIO; + goto error; + } + /* if phyirq is not set, use polling mode in phylib */ if (dev->domain_data.phyirq > 0) phydev->irq = dev->domain_data.phyirq; @@ -1957,7 +2045,7 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) ret = phy_connect_direct(dev->net, phydev, lan78xx_link_status_change, - PHY_INTERFACE_MODE_GMII); + dev->interface); if (ret) { netdev_err(dev->net, "can't attach PHY to %s\n", dev->mdiobus->id); @@ -1982,6 +2070,12 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); return 0; + +error: + phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); + phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); + + return ret; } static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) @@ -2338,6 +2432,9 @@ static int lan78xx_reset(struct lan78xx_net *dev) } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_)); ret = lan78xx_read_reg(dev, MAC_CR, &buf); + /* LAN7801 only has RGMII mode */ + if (dev->chipid == ID_REV_CHIP_ID_7801_) + buf &= ~MAC_CR_GMII_EN_; buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; ret = lan78xx_write_reg(dev, MAC_CR, buf); @@ -2464,8 +2561,12 @@ static int lan78xx_stop(struct net_device *net) if (timer_pending(&dev->stat_monitor)) del_timer_sync(&dev->stat_monitor); + phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); + phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); + phy_stop(net->phydev); phy_disconnect(net->phydev); + net->phydev = NULL; clear_bit(EVENT_DEV_OPEN, &dev->flags); @@ -3888,6 +3989,10 @@ static const struct usb_device_id products[] = { /* LAN7850 USB Gigabit Ethernet Device */ USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID), }, + { + /* LAN7801 USB Gigabit Ethernet Device */ + USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID), + }, {}, }; MODULE_DEVICE_TABLE(usb, products); diff --git a/drivers/net/usb/lan78xx.h b/drivers/net/usb/lan78xx.h index 40927906109a..25aa54611774 100644 --- a/drivers/net/usb/lan78xx.h +++ b/drivers/net/usb/lan78xx.h @@ -108,6 +108,7 @@ #define ID_REV_CHIP_REV_MASK_ (0x0000FFFF) #define ID_REV_CHIP_ID_7800_ (0x7800) #define ID_REV_CHIP_ID_7850_ (0x7850) +#define ID_REV_CHIP_ID_7801_ (0x7801) #define FPGA_REV (0x04) #define FPGA_REV_MINOR_MASK_ (0x0000FF00) @@ -550,6 +551,7 @@ #define LTM_INACTIVE1_TIMER10_ (0x0000FFFF) #define MAC_CR (0x100) +#define MAC_CR_GMII_EN_ (0x00080000) #define MAC_CR_EEE_TX_CLK_STOP_EN_ (0x00040000) #define MAC_CR_EEE_EN_ (0x00020000) #define MAC_CR_EEE_TLAR_EN_ (0x00010000) @@ -787,6 +789,18 @@ #define PHY_DEV_ID_MODEL_MASK_ (0x0FC00000) #define PHY_DEV_ID_OUI_MASK_ (0x003FFFFF) +#define RGMII_TX_BYP_DLL (0x708) +#define RGMII_TX_BYP_DLL_TX_TUNE_ADJ_MASK_ (0x000FC00) +#define RGMII_TX_BYP_DLL_TX_TUNE_SEL_MASK_ (0x00003F0) +#define RGMII_TX_BYP_DLL_TX_DLL_RESET_ (0x0000002) +#define RGMII_TX_BYP_DLL_TX_DLL_BYPASS_ (0x0000001) + +#define RGMII_RX_BYP_DLL (0x70C) +#define RGMII_RX_BYP_DLL_RX_TUNE_ADJ_MASK_ (0x000FC00) +#define RGMII_RX_BYP_DLL_RX_TUNE_SEL_MASK_ (0x00003F0) +#define RGMII_RX_BYP_DLL_RX_DLL_RESET_ (0x0000002) +#define RGMII_RX_BYP_DLL_RX_DLL_BYPASS_ (0x0000001) + #define OTP_BASE_ADDR (0x00001000) #define OTP_ADDR_RANGE_ (0x1FF) -- 2.30.2