From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-lj1-x242.google.com ([2a00:1450:4864:20::242]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fsY0L-00044k-0c for barebox@lists.infradead.org; Wed, 22 Aug 2018 18:37:18 +0000 Received: by mail-lj1-x242.google.com with SMTP id q127-v6so2173082ljq.11 for ; Wed, 22 Aug 2018 11:37:06 -0700 (PDT) From: Sam Ravnborg Date: Wed, 22 Aug 2018 20:36:49 +0200 Message-Id: <20180822183651.32071-1-sam@ravnborg.org> In-Reply-To: <20180822183555.GA24084@ravnborg.org> References: <20180822183555.GA24084@ravnborg.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v4 1/3] phylib: add Davicom PHY support To: Barebox List Cc: Sam Ravnborg Based on driver from Linux kernel 4.18.0-rc4 Signed-off-by: Sam Ravnborg --- drivers/net/phy/Kconfig | 5 ++ drivers/net/phy/Makefile | 1 + drivers/net/phy/davicom.c | 140 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 146 insertions(+) create mode 100644 drivers/net/phy/davicom.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index cda752b65..79fb917ee 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -18,6 +18,11 @@ config AT803X_PHY ---help--- Currently supports the AT8030, AT8031 and AT8035 PHYs. +config DAVICOM_PHY + bool "Driver for Davicom PHYs" + ---help--- + Currently supports dm9161e and dm9131 + config LXT_PHY bool "Driver for the Intel LXT PHYs" ---help--- diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 30b20f8ee..4424054d9 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -1,6 +1,7 @@ obj-y += phy.o mdio_bus.o obj-$(CONFIG_AR8327N_PHY) += ar8327.o obj-$(CONFIG_AT803X_PHY) += at803x.o +obj-$(CONFIG_DAVICOM_PHY) += davicom.o obj-$(CONFIG_LXT_PHY) += lxt.o obj-$(CONFIG_MARVELL_PHY) += marvell.o obj-$(CONFIG_MICREL_PHY) += micrel.o diff --git a/drivers/net/phy/davicom.c b/drivers/net/phy/davicom.c new file mode 100644 index 000000000..8a784b1e5 --- /dev/null +++ b/drivers/net/phy/davicom.c @@ -0,0 +1,140 @@ +/* + * drivers/net/phy/davicom.c + * + * Driver for Davicom PHYs + * + * Author: Andy Fleming + * + * Copyright (c) 2004 Freescale Semiconductor, 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, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include + +#define MII_DM9161_SCR 0x10 +#define MII_DM9161_SCR_INIT 0x0610 +#define MII_DM9161_SCR_RMII 0x0100 + +/* DM9161 Interrupt Register */ +#define MII_DM9161_INTR 0x15 +#define MII_DM9161_INTR_PEND 0x8000 +#define MII_DM9161_INTR_DPLX_MASK 0x0800 +#define MII_DM9161_INTR_SPD_MASK 0x0400 +#define MII_DM9161_INTR_LINK_MASK 0x0200 +#define MII_DM9161_INTR_MASK 0x0100 +#define MII_DM9161_INTR_DPLX_CHANGE 0x0010 +#define MII_DM9161_INTR_SPD_CHANGE 0x0008 +#define MII_DM9161_INTR_LINK_CHANGE 0x0004 +#define MII_DM9161_INTR_INIT 0x0000 +#define MII_DM9161_INTR_STOP \ +(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \ + | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK) + +/* DM9161 10BT Configuration/Status */ +#define MII_DM9161_10BTCSR 0x12 +#define MII_DM9161_10BTCSR_INIT 0x7800 + +MODULE_DESCRIPTION("Davicom PHY driver"); +MODULE_AUTHOR("Andy Fleming"); +MODULE_LICENSE("GPL"); + + +static int dm9161_config_aneg(struct phy_device *phydev) +{ + int err; + + /* Isolate the PHY */ + err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE); + + if (err < 0) + return err; + + /* Configure the new settings */ + err = genphy_config_aneg(phydev); + + if (err < 0) + return err; + + return 0; +} + +static int dm9161_config_init(struct phy_device *phydev) +{ + int err, temp; + + /* Isolate the PHY */ + err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE); + + if (err < 0) + return err; + + switch (phydev->interface) { + case PHY_INTERFACE_MODE_MII: + temp = MII_DM9161_SCR_INIT; + break; + case PHY_INTERFACE_MODE_RMII: + temp = MII_DM9161_SCR_INIT | MII_DM9161_SCR_RMII; + break; + default: + return -EINVAL; + } + + /* Do not bypass the scrambler/descrambler */ + err = phy_write(phydev, MII_DM9161_SCR, temp); + if (err < 0) + return err; + + /* Clear 10BTCSR to default */ + err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT); + + if (err < 0) + return err; + + /* Reconnect the PHY, and enable Autonegotiation */ + return phy_write(phydev, MII_BMCR, BMCR_ANENABLE); +} + +static struct phy_driver dm91xx_driver[] = { +{ + .phy_id = 0x0181b880, + .drv.name = "Davicom DM9161E", + .phy_id_mask = 0x0ffffff0, + .features = PHY_BASIC_FEATURES, + .config_init = dm9161_config_init, + .config_aneg = dm9161_config_aneg, +}, { + .phy_id = 0x0181b8b0, + .drv.name = "Davicom DM9161B/C", + .phy_id_mask = 0x0ffffff0, + .features = PHY_BASIC_FEATURES, + .config_init = dm9161_config_init, + .config_aneg = dm9161_config_aneg, +}, { + .phy_id = 0x0181b8a0, + .drv.name = "Davicom DM9161A", + .phy_id_mask = 0x0ffffff0, + .features = PHY_BASIC_FEATURES, + .config_init = dm9161_config_init, + .config_aneg = dm9161_config_aneg, +}, { + .phy_id = 0x00181b80, + .drv.name = "Davicom DM9131", + .phy_id_mask = 0x0ffffff0, + .features = PHY_BASIC_FEATURES, +} }; + +static int dm9161_init(void) +{ + return phy_drivers_register(dm91xx_driver, + ARRAY_SIZE(dm91xx_driver)); +} +fs_initcall(dm9161_init); -- 2.12.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox