From patchwork Wed Apr 25 06:43:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raghuram Chary J X-Patchwork-Id: 904019 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=microchip.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40W9XV5gnsz9s0v for ; Wed, 25 Apr 2018 16:39:22 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751167AbeDYGjT (ORCPT ); Wed, 25 Apr 2018 02:39:19 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:34918 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750841AbeDYGjT (ORCPT ); Wed, 25 Apr 2018 02:39:19 -0400 X-IronPort-AV: E=Sophos;i="5.49,325,1520924400"; d="scan'208";a="13503078" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 24 Apr 2018 23:39:18 -0700 Received: from I20884-mchip.microchip.com (10.10.76.4) by chn-sv-exch06.mchp-main.com (10.10.76.107) with Microsoft SMTP Server id 14.3.352.0; Tue, 24 Apr 2018 23:39:17 -0700 From: Raghuram Chary J To: CC: , , , Subject: [PATCH v1 net-next] lan78xx: Lan7801 Support for Fixed PHY Date: Wed, 25 Apr 2018 12:13:06 +0530 Message-ID: <20180425064306.5513-1-raghuramchary.jallipalli@microchip.com> X-Mailer: git-send-email 2.16.2 MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Adding Fixed PHY support to the lan78xx driver. Signed-off-by: Raghuram Chary J --- v0->v1: * Remove driver version #define * Modify netdev_info to netdev_dbg * Move lan7801 specific to new routine and add switch case * Minor cleanup --- drivers/net/usb/Kconfig | 1 + drivers/net/usb/lan78xx.c | 113 ++++++++++++++++++++++++++++++++-------------- 2 files changed, 79 insertions(+), 35 deletions(-) diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig index f28bd74ac275..418b0904cecb 100644 --- a/drivers/net/usb/Kconfig +++ b/drivers/net/usb/Kconfig @@ -111,6 +111,7 @@ config USB_LAN78XX select MII select PHYLIB select MICROCHIP_PHY + select FIXED_PHY help This option adds support for Microchip LAN78XX based USB 2 & USB 3 10/100/1000 Ethernet adapters. diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 0867f7275852..47fa34a2d09f 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -36,13 +36,12 @@ #include #include #include -#include +#include #include "lan78xx.h" #define DRIVER_AUTHOR "WOOJUNG HUH " #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" #define DRIVER_NAME "lan78xx" -#define DRIVER_VERSION "1.0.6" #define TX_TIMEOUT_JIFFIES (5 * HZ) #define THROTTLE_JIFFIES (HZ / 8) @@ -402,6 +401,7 @@ struct lan78xx_net { struct statstage stats; struct irq_domain_data domain_data; + struct phy_device *fixedphy; }; /* define external phy id */ @@ -1477,7 +1477,6 @@ static void lan78xx_get_drvinfo(struct net_device *net, struct lan78xx_net *dev = netdev_priv(net); strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); - strncpy(info->version, DRIVER_VERSION, sizeof(info->version)); usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); } @@ -2003,52 +2002,91 @@ static int ksz9031rnx_fixup(struct phy_device *phydev) return 1; } -static int lan78xx_phy_init(struct lan78xx_net *dev) +static int lan7801_phy_init(struct phy_device **phydev, + struct lan78xx_net *dev) { + u32 buf; int ret; - u32 mii_adv; - struct phy_device *phydev; - - phydev = phy_find_first(dev->mdiobus); - if (!phydev) { - netdev_err(dev->net, "no PHY found\n"); - 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) { + struct fixed_phy_status fphy_status = { + .link = 1, + .speed = SPEED_1000, + .duplex = DUPLEX_FULL, + }; + + if (!*phydev) { + netdev_dbg(dev->net, "PHY Not Found!! Registering Fixed PHY\n"); + *phydev = fixed_phy_register(PHY_POLL, &fphy_status, -1, + NULL); + if (IS_ERR(*phydev)) { + netdev_err(dev->net, "No PHY/fixed_PHY found\n"); + return -ENODEV; + } + netdev_dbg(dev->net, "Registered FIXED PHY\n"); + dev->interface = PHY_INTERFACE_MODE_RGMII; + dev->fixedphy = *phydev; + ret = lan78xx_write_reg(dev, MAC_RGMII_ID, + MAC_RGMII_ID_TXC_DELAY_EN_); + ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); + ret = lan78xx_read_reg(dev, HW_CFG, &buf); + buf |= HW_CFG_CLK125_EN_; + buf |= HW_CFG_REFCLK25_EN_; + ret = lan78xx_write_reg(dev, HW_CFG, buf); + } else { + 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"); + netdev_err(dev->net, "fail to register fixup PHY_KSZ9031RNX\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"); + netdev_err(dev->net, "fail to register fixup for PHY_LAN8835\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; + (*phydev)->is_internal = false; + } + return 0; +} + +static int lan78xx_phy_init(struct lan78xx_net *dev) +{ + int ret; + u32 mii_adv; + struct phy_device *phydev; + + phydev = phy_find_first(dev->mdiobus); + switch (dev->chipid) { + case ID_REV_CHIP_ID_7801_: + ret = lan7801_phy_init(&phydev, dev); + if (ret < 0) { + netdev_err(dev->net, "lan7801: PHY Init Failed"); + return ret; + } + break; + + case ID_REV_CHIP_ID_7800_: + case ID_REV_CHIP_ID_7850_: + if (!phydev) { + netdev_err(dev->net, "no PHY found\n"); + return -EIO; + } + phydev->is_internal = true; + dev->interface = PHY_INTERFACE_MODE_GMII; + break; + + default: + netdev_err(dev->net, "Unknown CHIP ID found\n"); + return -EIO; } /* if phyirq is not set, use polling mode in phylib */ @@ -2067,6 +2105,12 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) if (ret) { netdev_err(dev->net, "can't attach PHY to %s\n", dev->mdiobus->id); + if (dev->chipid == ID_REV_CHIP_ID_7801_) { + phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, + 0xfffffff0); + phy_unregister_fixup_for_uid(PHY_LAN8835, + 0xfffffff0); + } return -EIO; } @@ -2084,12 +2128,6 @@ static int lan78xx_phy_init(struct lan78xx_net *dev) dev->fc_autoneg = phydev->autoneg; 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) @@ -3501,6 +3539,11 @@ static void lan78xx_disconnect(struct usb_interface *intf) phy_disconnect(net->phydev); + if (dev->fixedphy) { + fixed_phy_unregister(dev->fixedphy); + dev->fixedphy = NULL; + } + unregister_netdev(net); cancel_delayed_work_sync(&dev->wq);