From patchwork Thu May 7 18:19:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joachim Eastwood X-Patchwork-Id: 6360431 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 542BBBEEE1 for ; Thu, 7 May 2015 18:22:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 614ED203AA for ; Thu, 7 May 2015 18:22:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6F77120376 for ; Thu, 7 May 2015 18:22:50 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YqQPf-0004xY-Bh; Thu, 07 May 2015 18:20:47 +0000 Received: from mail-la0-x235.google.com ([2a00:1450:4010:c03::235]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YqQOq-0003Gn-AG for linux-arm-kernel@lists.infradead.org; Thu, 07 May 2015 18:19:59 +0000 Received: by labbd9 with SMTP id bd9so36817529lab.2 for ; Thu, 07 May 2015 11:19:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=sUWy5bAVt/JaGREQqJ2bYao+E53T91H+WQQJWwFko1w=; b=eLrTO5T2Y0N+yEPhniJ41KGyTLh4o4S9BdQIjdQMufCx//K+4dCm3+FSqsmKcf1ILJ 0Zwt+5jHlo5IpIn90N0EnreIGHCfUeCfOBIyHlw83OahNHWuQOODPCBZf8f12mDErXVQ 17p0T5fDAfDnXu0kYN5LX7y5uolK4lJRW18UD/1TuitHPIoBRSULqgKc/1JmNWTJkXnD dbQVdYrkmTriFRoo463mwsZh6Chi0CEoihKqsr9jArdwNcJoJhLb7f8vrfFNk07t0/At BwlpWOH3v974G6jillaLG0CtiURN6g087sOVnpk/pDnxPU9eH+306mP7v5Jbp+pEs74v iE6g== X-Received: by 10.152.19.132 with SMTP id f4mr3997218lae.115.1431022773494; Thu, 07 May 2015 11:19:33 -0700 (PDT) Received: from localhost.localdomain ([90.149.48.183]) by mx.google.com with ESMTPSA id ln6sm608357lac.45.2015.05.07.11.19.32 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 07 May 2015 11:19:32 -0700 (PDT) From: Joachim Eastwood To: arnd@arndb.de Subject: [PATCH RFC 2/2] stmac: add dwmac glue for NXP 18xx/43xx family Date: Thu, 7 May 2015 20:19:25 +0200 Message-Id: <1431022765-30715-3-git-send-email-manabian@gmail.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1431022765-30715-1-git-send-email-manabian@gmail.com> References: <1431022765-30715-1-git-send-email-manabian@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150507_111956_596209_6A8BCF9F X-CRM114-Status: GOOD ( 16.30 ) X-Spam-Score: -0.8 (/) Cc: peppe.cavallaro@st.com, Joachim Eastwood , davem@davemloft.net, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for using the dwmac on NXP LPC18xx and LPC43xx devices. Signed-off-by: Joachim Eastwood --- drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | 98 ++++++++++++++++++++++ 2 files changed, 99 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index f35e2bcde55f..560642a44134 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -7,6 +7,7 @@ stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o \ # ordering matters; keep stmmac_platform.o at the bottom obj-$(CONFIG_STMMAC_PLATFORM) += stmmac-platform.o stmmac-platform-objs:= \ + dwmac-lpc18xx.o \ dwmac-meson.o \ dwmac-rk.o \ dwmac-socfpga.o \ diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c new file mode 100644 index 000000000000..ed9ec45cb5ac --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c @@ -0,0 +1,98 @@ +/* + * STMAC glue for NXP LPC18xx/LPC43xx Ethernet + * + * Copyright (C) 2015 Joachim Eastwood + * + * 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 +#include +#include +#include +#include +#include +#include + +#include "stmmac_platform.h" + +/* Register defines for CREG syscon */ +#define LPC18XX_CREG_CREG6 0x12c +# define LPC18XX_CREG_CREG6_ETHMODE_MASK 0x7 +# define LPC18XX_CREG_CREG6_ETHMODE_MII 0x0 +# define LPC18XX_CREG_CREG6_ETHMODE_RMII 0x4 + +struct lpc18xx_dwmac_priv_data { + struct regmap *reg; + int interface; +}; + +static void *lpc18xx_dwmac_setup(struct platform_device *pdev) +{ + struct lpc18xx_dwmac_priv_data *dwmac; + + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) + return ERR_PTR(-ENOMEM); + + dwmac->interface = of_get_phy_mode(pdev->dev.of_node); + if (dwmac->interface < 0) + return ERR_PTR(dwmac->interface); + + dwmac->reg = syscon_regmap_lookup_by_compatible("nxp,lpc1850-creg"); + if (IS_ERR(dwmac->reg)) { + dev_err(&pdev->dev, "syscon lookup failed\n"); + return dwmac->reg; + } + + return dwmac; +} + +static int lpc18xx_dwmac_init(struct platform_device *pdev, void *priv) +{ + struct lpc18xx_dwmac_priv_data *dwmac = priv; + u8 ethmode; + + if (dwmac->interface == PHY_INTERFACE_MODE_MII) { + ethmode = LPC18XX_CREG_CREG6_ETHMODE_MII; + } else if (dwmac->interface == PHY_INTERFACE_MODE_RMII) { + ethmode = LPC18XX_CREG_CREG6_ETHMODE_RMII; + } else { + dev_err(&pdev->dev, "only MII and RMII mode supported\n"); + return -EINVAL; + } + + regmap_update_bits(dwmac->reg, LPC18XX_CREG_CREG6, + LPC18XX_CREG_CREG6_ETHMODE_MASK, ethmode); + + return 0; +} + +static const struct stmmac_of_data lpc18xx_dwmac_data = { + .has_gmac = 1, + .setup = lpc18xx_dwmac_setup, + .init = lpc18xx_dwmac_init, +}; + +static const struct of_device_id lpc18xx_dwmac_match[] = { + { .compatible = "nxp,lpc1850-dwmac", .data = &lpc18xx_dwmac_data }, + { } +}; +MODULE_DEVICE_TABLE(of, lpc18xx_dwmac_match); + +static struct platform_driver lpc18xx_dwmac_driver = { + .probe = stmmac_pltfr_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = "lpc18xx-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = lpc18xx_dwmac_match, + }, +}; +module_platform_driver(lpc18xx_dwmac_driver); + +MODULE_AUTHOR("Joachim Eastwood "); +MODULE_DESCRIPTION("Driver for Ethernet on LPC18xx/43xx"); +MODULE_LICENSE("GPL v2");