From patchwork Tue Oct 16 01:17:58 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nobuhiro Iwamatsu X-Patchwork-Id: 191695 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 52F3E2C00A5 for ; Tue, 16 Oct 2012 12:18:17 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755450Ab2JPBSL (ORCPT ); Mon, 15 Oct 2012 21:18:11 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:55119 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754074Ab2JPBSJ (ORCPT ); Mon, 15 Oct 2012 21:18:09 -0400 Received: by mail-pb0-f46.google.com with SMTP id rr4so5465643pbb.19 for ; Mon, 15 Oct 2012 18:18:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer :x-gm-message-state; bh=R1798FXnTNFXU8FUqp+cou4xj4+eUqR3HImb0LKnHeA=; b=fYvsa1oGEXbnSHJEyuXgSrmC83YZQuuEGejabxQijfwsjB/UAOYEqX8f2jA/R7SIFV JaZd9nyGx/YANPnV66POR1Yp5Py0czHQTPBrSwhXVVe6oAyeyku+6O+cPQMMzdEgbAvF iNQMUepVnNHywwzftFXPkn9gggxLrhbmBib6yvnbxXP9MpK2XG6h0JqKDw+a60Nj8/CM yias9vP25ppnBuXaSdnF9HQ0c0rR2NvzIg77zPUfqZmVO/272wTQN1888vjlWjFSMxIi 0vN1I35Zj4asmY/pOEDe19LRS4ZW6Q0sWBY9brDekCFJ8/ZHZRX4aofAjoMFD8X9udiL rXfA== Received: by 10.66.76.98 with SMTP id j2mr37229822paw.65.1350350288830; Mon, 15 Oct 2012 18:18:08 -0700 (PDT) Received: from xps-iwamatsu.renesas.com (49.14.32.202.bf.2iij.net. [202.32.14.49]) by mx.google.com with ESMTPS id e9sm8862572paz.28.2012.10.15.18.18.06 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 15 Oct 2012 18:18:07 -0700 (PDT) From: Nobuhiro Iwamatsu To: netdev@vger.kernel.org Cc: Nobuhiro Iwamatsu Subject: [PATCH 1/2] net: sh_eth: Add support of device tree probe Date: Tue, 16 Oct 2012 10:17:58 +0900 Message-Id: <1350350279-8693-1-git-send-email-nobuhiro.iwamatsu.yj@renesas.com> X-Mailer: git-send-email 1.7.10.4 X-Gm-Message-State: ALoCoQl+IVdIAyWYAu2ZxBfK7HJ6TQJcBg81MKpRfWaOmBL1PPQvenRF/9ss8yf5HwcXfmETDWav Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This adds support of device tree probe for Renesas sh-ether driver. Signed-off-by: Nobuhiro Iwamatsu --- Documentation/devicetree/bindings/net/sh_ether.txt | 45 ++++ drivers/net/ethernet/renesas/sh_eth.c | 267 ++++++++++++++++---- 2 files changed, 268 insertions(+), 44 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/sh_ether.txt diff --git a/Documentation/devicetree/bindings/net/sh_ether.txt b/Documentation/devicetree/bindings/net/sh_ether.txt new file mode 100644 index 0000000..2cec715 --- /dev/null +++ b/Documentation/devicetree/bindings/net/sh_ether.txt @@ -0,0 +1,45 @@ +* Renesas Electronics SuperH EMAC + +This file provides information, what the device node +for the sh_eth interface contains. + +Required properties: +- compatible: "renesas,sh-eth"; +- interrupt-parent: The phandle for the interrupt controller that + services interrupts for this device. +- reg: Offset and length of the register set for the + device. +- interrupts: Interrupt mapping for the sh_eth interrupt + sources (vector id). +- cell-index: Ether device index starts at 0. +- phy-mode: String, operation mode of the PHY interface. +- sh-eth,edmac-endian: String, endian of sh_eth dmac. +- sh-eth,register-type: String, register type of sh_eth. + Please select "gigabit", "fast-sh4" or + "fast-sh3-sh2". + Please select "little" or "big". +- sh-eth,endian: String, endian of sh_eth dmac. +- sh-eth,phy-id: PHY id. + +Optional properties: +- local-mac-address : 6 bytes, mac address +- sh-eth,no-ether-link: set link control by software. When device does + not support ether-link, set. +- sh-etn,ether-link-active-low: set link check method. + When detection of link is treated as active-low, + set. +- sh-etn,needs-init: Initialization flag. + When initialize device in probing device, set. + +Example (armadillo800eva): + sh-eth@e9a00000 { + compatible = "renesas,sh-eth"; + interrupt-parent = <&intca>; + reg = <0xe9a00000 0x800>, <0xe9a01800 0x800>; + interrupts = <0x500>; + cell-index = <0>; + phy-mode = "mii"; + sh-eth,edmac-endian = "little"; + sh-eth,register-type = "gigabit"; + sh-eth,phy-id = <0>; + }; diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index c8bfea0..756d87e 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -31,6 +31,12 @@ #include #include #include +#include +#include +#include +#include +#include +#include #include #include #include @@ -2347,21 +2353,161 @@ static const struct net_device_ops sh_eth_netdev_ops = { .ndo_change_mtu = eth_change_mtu, }; +#ifdef CONFIG_OF + +static int +sh_eth_of_get_register_type(struct device_node *np) +{ + const char *of_str; + int ret = of_property_read_string(np, "sh-eth,register-type", &of_str); + if (ret) + return ret; + + if (of_str && !strcmp(of_str, "gigabit")) + return SH_ETH_REG_GIGABIT; + else if (of_str && !strcmp(of_str, "fast-sh4")) + return SH_ETH_REG_FAST_SH4; + else if (of_str && !strcmp(of_str, "fast-sh3-sh2")) + return SH_ETH_REG_FAST_SH3_SH2; + else + return -EINVAL; +} + +static struct sh_eth_plat_data * +sh_eth_parse_dt(struct device *dev, struct net_device *ndev, int *devno) +{ + int ret; + struct sh_eth_private *mdp = NULL; + struct resource res; + const char *of_str; + struct device_node *np = dev->of_node; + struct sh_eth_plat_data *pdata; + + mdp = netdev_priv(ndev); + + ret = of_address_to_resource(np, 0, &res); + if (ret) { + dev_err(dev, "could not determine device base address\n"); + return NULL; + } + + ndev->base_addr = res.start; + + ndev->irq = irq_of_parse_and_map(np, 0); + if (ndev->irq == NO_IRQ) { + dev_err(dev, "irq_of_parse_and_map failed\n"); + return NULL; + } + + mdp->addr = ioremap(res.start, resource_size(&res)); + if (mdp->addr == NULL) { + dev_err(dev, "ioremap failed.\n"); + return NULL; + } + + pdata = devm_kzalloc(dev, sizeof(struct sh_eth_plat_data), + GFP_KERNEL); + if (!pdata) { + dev_err(dev, "%s: failed to allocate config data\n", __func__); + goto out_release; + } + + ret = of_property_read_u32(np, "cell-index", devno); + + pdata->phy_interface = of_get_phy_mode(np); + + of_property_read_u32(np, "sh-eth,phy-id", &pdata->phy); + + of_property_read_string(np, "sh-eth,edmac-endian", &of_str); + if (of_str && !strcmp(of_str, "little")) + pdata->edmac_endian = EDMAC_LITTLE_ENDIAN; + else if (of_str && !strcmp(of_str, "big")) + pdata->edmac_endian = EDMAC_BIG_ENDIAN; + else + goto out_release; + + if (of_find_property(np, "sh-eth,no-ether-link", NULL)) + pdata->no_ether_link = 1; + else + pdata->no_ether_link = 0; + + if (of_find_property(np, "sh-eth,ether-link-active-low", NULL)) + pdata->ether_link_active_low = 1; + else + pdata->ether_link_active_low = 0; + + ret = sh_eth_of_get_register_type(np); + if (ret < 0) + goto out_release; + pdata->register_type = ret; + + if (of_find_property(np, "sh-eth,needs-init", NULL)) + pdata->needs_init = 1; + else + pdata->needs_init = 0; + +#ifdef CONFIG_OF_NET + if (!is_valid_ether_addr(ndev->dev_addr)) { + const char *macaddr = of_get_mac_address(np); + if (macaddr) + memcpy(pdata->mac_addr, macaddr, ETH_ALEN); + } +#endif + + return pdata; + +out_release: + iounmap(mdp->addr); + return NULL; +} + +static int +sh_eth_parse_dt_tmu(struct device *dev, struct net_device *ndev, int *devno) +{ + int ret; + struct sh_eth_private *mdp = NULL; + struct resource res; + + mdp = netdev_priv(ndev); + + ret = of_address_to_resource(dev->of_node, 1, &res); + if (ret) { + dev_err(dev, "could not determine device base address\n"); + return -EINVAL; + } + + mdp->tsu_addr = ioremap(res.start, resource_size(&res)); + if (mdp->addr == NULL) { + dev_err(dev, "ioremap failed.\n"); + return -ENOMEM; + } + + mdp->port = (*devno) % 2; + ndev->features = NETIF_F_HW_VLAN_FILTER; + + return 0; +} +#else +static struct sh_eth_plat_data * +sh_eth_parse_dt(struct device *dev, struct net_device *ndev, int *devno) +{ + return NULL; +} +static int +sh_eth_parse_dt_tmu(struct device *dev, struct net_device *ndev) +{ + return -ENOSYS; +} +#endif + static int sh_eth_drv_probe(struct platform_device *pdev) { - int ret, devno = 0; + int ret = 0, devno = 0; struct resource *res; struct net_device *ndev = NULL; struct sh_eth_private *mdp = NULL; struct sh_eth_plat_data *pd; - - /* get base addr */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (unlikely(res == NULL)) { - dev_err(&pdev->dev, "invalid resource\n"); - ret = -EINVAL; - goto out; - } + struct device_node *np = pdev->dev.of_node; ndev = alloc_etherdev(sizeof(struct sh_eth_private)); if (!ndev) { @@ -2369,41 +2515,63 @@ static int sh_eth_drv_probe(struct platform_device *pdev) goto out; } - /* The sh Ether-specific entries in the device structure. */ - ndev->base_addr = res->start; - devno = pdev->id; - if (devno < 0) - devno = 0; + /* Fill in the fields of the device structure with ethernet values. */ + ether_setup(ndev); - ndev->dma = -1; - ret = platform_get_irq(pdev, 0); - if (ret < 0) { - ret = -ENODEV; - goto out_release; + mdp = netdev_priv(ndev); + + if (np && of_device_is_available(np)) { + pd = sh_eth_parse_dt(&pdev->dev, ndev, &devno); + if (!pd) { + dev_err(&pdev->dev, "no setup data defined\n"); + ret = -EINVAL; + goto out_release; + } + } else { + /* get base addr */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (unlikely(res == NULL)) { + dev_err(&pdev->dev, "invalid resource\n"); + ret = -EINVAL; + goto out_release; + } + + /* The sh Ether-specific entries in the device structure. */ + ndev->base_addr = res->start; + devno = pdev->id; + if (devno < 0) + devno = 0; + + ndev->dma = -1; + ret = platform_get_irq(pdev, 0); + if (ret < 0) { + ret = -ENODEV; + goto out_release; + } + ndev->irq = ret; + + mdp->addr = ioremap(res->start, resource_size(res)); + if (mdp->addr == NULL) { + ret = -ENOMEM; + dev_err(&pdev->dev, "ioremap failed.\n"); + goto out_release; + } + + pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data); } - ndev->irq = ret; - SET_NETDEV_DEV(ndev, &pdev->dev); + ndev->dma = -1; - /* Fill in the fields of the device structure with ethernet values. */ - ether_setup(ndev); + SET_NETDEV_DEV(ndev, &pdev->dev); - mdp = netdev_priv(ndev); mdp->num_tx_ring = TX_RING_SIZE; mdp->num_rx_ring = RX_RING_SIZE; - mdp->addr = ioremap(res->start, resource_size(res)); - if (mdp->addr == NULL) { - ret = -ENOMEM; - dev_err(&pdev->dev, "ioremap failed.\n"); - goto out_release; - } spin_lock_init(&mdp->lock); mdp->pdev = pdev; pm_runtime_enable(&pdev->dev); pm_runtime_resume(&pdev->dev); - pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data); /* get PHY ID */ mdp->phy_id = pd->phy; mdp->phy_interface = pd->phy_interface; @@ -2412,6 +2580,8 @@ static int sh_eth_drv_probe(struct platform_device *pdev) mdp->no_ether_link = pd->no_ether_link; mdp->ether_link_active_low = pd->ether_link_active_low; mdp->reg_offset = sh_eth_get_register_offset(pd->register_type); + /* read and set MAC address */ + read_mac_address(ndev, pd->mac_addr); /* set cpu data */ #if defined(SH_ETH_HAS_BOTH_MODULES) @@ -2429,22 +2599,24 @@ static int sh_eth_drv_probe(struct platform_device *pdev) /* debug message level */ mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE; - /* read and set MAC address */ - read_mac_address(ndev, pd->mac_addr); - /* ioremap the TSU registers */ if (mdp->cd->tsu) { - struct resource *rtsu; - rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!rtsu) { - dev_err(&pdev->dev, "Not found TSU resource\n"); - ret = -ENODEV; - goto out_release; - } - mdp->tsu_addr = ioremap(rtsu->start, + if (np) { + ret = sh_eth_parse_dt_tmu(&pdev->dev, ndev, &devno); + if (ret) + goto out_release; + } else { + struct resource *rtsu; + rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!rtsu) { + dev_err(&pdev->dev, "Not found TSU resource\n"); + goto out_release; + } + mdp->tsu_addr = ioremap(rtsu->start, resource_size(rtsu)); - mdp->port = devno % 2; - ndev->features = NETIF_F_HW_VLAN_FILTER; + mdp->port = devno % 2; + ndev->features = NETIF_F_HW_VLAN_FILTER; + } } /* initialize first or needed device */ @@ -2527,12 +2699,19 @@ static struct dev_pm_ops sh_eth_dev_pm_ops = { .runtime_resume = sh_eth_runtime_nop, }; +static struct of_device_id sh_eth_match[] = { + { .compatible = "renesas,sh-eth",}, + {}, +}; +MODULE_DEVICE_TABLE(of, sh_eth_match); + static struct platform_driver sh_eth_driver = { .probe = sh_eth_drv_probe, .remove = sh_eth_drv_remove, .driver = { .name = CARDNAME, .pm = &sh_eth_dev_pm_ops, + .of_match_table = sh_eth_match, }, };