From patchwork Wed Apr 11 15:08:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 897225 X-Patchwork-Delegate: marek.vasut@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="jvuOMA9I"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 40LnVr0mGBz9s0n for ; Thu, 12 Apr 2018 01:08:52 +1000 (AEST) Received: by lists.denx.de (Postfix, from userid 105) id B0417C21C38; Wed, 11 Apr 2018 15:08:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H2, T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 67CF0C21D9A; Wed, 11 Apr 2018 15:08:28 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 59279C21C57; Wed, 11 Apr 2018 15:08:11 +0000 (UTC) Received: from mail-wr0-f193.google.com (mail-wr0-f193.google.com [209.85.128.193]) by lists.denx.de (Postfix) with ESMTPS id 783FAC21C2F for ; Wed, 11 Apr 2018 15:08:08 +0000 (UTC) Received: by mail-wr0-f193.google.com with SMTP id u11so2123440wri.12 for ; Wed, 11 Apr 2018 08:08:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=xocNmIqLiM2EbUVbPaPJKmcbh7gwNHd6rPasrZUDXaE=; b=jvuOMA9IVR1eZ0gy9NepYqKUhP76MHshZv1WWNsiNfoLbbSFyokxxsDGPjaS712cun wikJm+VAFtb96zClyozlYE/D7x0JjKNa8a801WlsfeUwb8OuUBF2VgfhPSS8qYA2cmkH 1eJgoymujdm/PYLa287qqm0LtOmLOv/Fp7hrEoE/ZgOk/4I8X5SLarSapXHRW2YPXf+l 1u26M3NWR9H/favgDKmJtYXQUBoVs1B/eAtseoLwCAgb7Z5J3CobAz8r1ilXO3pkmE6F 3k0cMPIPLp/htV35LyOSMfN4ftXPguK1qlYBp+DL0kyjBVKTatYuWEFjKT7WffocfwwA MoHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=xocNmIqLiM2EbUVbPaPJKmcbh7gwNHd6rPasrZUDXaE=; b=Agg+yNwYnZXZeHXjziedDvZ5lFrVy5ZmuOeuoI1sBO4ycx1QWVKrW0tDz8c/Z+LZVY V6obdk4oX9FG0THQFM8K8a+lTsfsFoxxUUAgFL3SP1UWFTLqUebdYD4JtFoVa9o894LR 3yjFcbv2gcSlR9Hdr0eQGcHvEGew5G4G6zwNL0k1yekNWoFCU5yqIv+yNnHu1RUdfQ8X doXCwa632cOYY2/UXRcevJOcHKv2Yg9bcUzx2Y1nrLdE7dLrWcTZPbeo59UU8GmiwWJV kFPiOxLqCKDPAGY9LaMT/SOcbvpMmNT7AoU4QOSZvSV40UD4CdZZCazX6z1Fce62o0e0 k/gw== X-Gm-Message-State: ALQs6tBLYyQkEMAH5vBG4yMV7tW9vb/D5DFOMERnqS1p6/TgXul4EwTg ZYKH+WtbUypsAgBKlh/En+KnFqOZGVI= X-Google-Smtp-Source: AIpwx48374EXYna/EMnLYMXFcXxTppWeYYulskvIWeJtJdfhPH4DZdN4LsYWc/TWtP/fkk+IxBBUHg== X-Received: by 10.223.195.132 with SMTP id p4mr3626793wrf.279.1523459287620; Wed, 11 Apr 2018 08:08:07 -0700 (PDT) Received: from bender.baylibre.local ([90.63.244.31]) by smtp.gmail.com with ESMTPSA id e27sm2260382wre.86.2018.04.11.08.08.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 11 Apr 2018 08:08:06 -0700 (PDT) From: Neil Armstrong To: u-boot@lists.denx.de, marex@denx.de, bmeng.cn@gmail.com Date: Wed, 11 Apr 2018 17:08:00 +0200 Message-Id: <1523459282-12235-2-git-send-email-narmstrong@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1523459282-12235-1-git-send-email-narmstrong@baylibre.com> References: <1523459282-12235-1-git-send-email-narmstrong@baylibre.com> Cc: linux-amlogic@lists.infradead.org Subject: [U-Boot] [PATCH v3 u-boot 1/3] usb: host: Add simple of glue driver for DWC3 USB Controllers integration X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" This is a port of the dwc3-of-simple driver from Linux to enable/deassert clock and resets of a simple DWC3 Controller HW glue. Signed-off-by: Neil Armstrong tested-by: Jean-Jacques hiblot --- drivers/usb/host/Kconfig | 7 +++ drivers/usb/host/Makefile | 1 + drivers/usb/host/dwc3-of-simple.c | 109 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 117 insertions(+) create mode 100644 drivers/usb/host/dwc3-of-simple.c diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index a7249b7..6caa615 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -21,6 +21,13 @@ config USB_XHCI_DWC3 Say Y or if your system has a Dual Role SuperSpeed USB controller based on the DesignWare USB3 IP Core. +config USB_XHCI_DWC3_OF_SIMPLE + bool "DesignWare USB3 DRD Generic OF Simple Glue Layer" + select MISC + help + Support USB2/3 functionality in simple SoC integrations with + USB controller based on the DesignWare USB3 IP Core. + config USB_XHCI_MVEBU bool "MVEBU USB 3.0 support" default y diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 9819489..abe4f90 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_USB_EHCI_ZYNQ) += ehci-zynq.o # xhci obj-$(CONFIG_USB_XHCI_HCD) += xhci.o xhci-mem.o xhci-ring.o obj-$(CONFIG_USB_XHCI_DWC3) += xhci-dwc3.o +obj-$(CONFIG_USB_XHCI_DWC3_OF_SIMPLE) += dwc3-of-simple.o obj-$(CONFIG_USB_XHCI_ROCKCHIP) += xhci-rockchip.o obj-$(CONFIG_USB_XHCI_ZYNQMP) += xhci-zynqmp.o obj-$(CONFIG_USB_XHCI_KEYSTONE) += xhci-keystone.o diff --git a/drivers/usb/host/dwc3-of-simple.c b/drivers/usb/host/dwc3-of-simple.c new file mode 100644 index 0000000..54a5f60 --- /dev/null +++ b/drivers/usb/host/dwc3-of-simple.c @@ -0,0 +1,109 @@ +/* + * dwc3-of-simple.c - OF glue layer for simple integrations + * + * Copyright (c) 2015 Texas Instruments Incorporated - http://www.ti.com + * + * Author: Felipe Balbi + * + * Copyright (C) 2018 BayLibre, SAS + * Author: Neil Armstrong + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +struct dwc3_of_simple { + struct clk_bulk clks; + struct reset_ctl_bulk resets; +}; + +static int dwc3_of_simple_reset_init(struct udevice *dev, + struct dwc3_of_simple *simple) +{ + int ret; + + ret = reset_get_bulk(dev, &simple->resets); + if (ret == -ENOTSUPP) + return 0; + else if (ret) + return ret; + + ret = reset_deassert_bulk(&simple->resets); + if (ret) { + reset_release_bulk(&simple->resets); + return ret; + } + + return 0; +} + +static int dwc3_of_simple_clk_init(struct udevice *dev, + struct dwc3_of_simple *simple) +{ + int ret; + + ret = clk_get_bulk(dev, &simple->clks); + if (ret == -ENOTSUPP) + return 0; + if (ret) + return ret; + +#if CONFIG_IS_ENABLED(CLK) + ret = clk_enable_bulk(&simple->clks); + if (ret) { + clk_release_bulk(&simple->clks); + return ret; + } +#endif + + return 0; +} + +static int dwc3_of_simple_probe(struct udevice *dev) +{ + struct dwc3_of_simple *simple = dev_get_platdata(dev); + int ret; + + ret = dwc3_of_simple_clk_init(dev, simple); + if (ret) + return ret; + + ret = dwc3_of_simple_reset_init(dev, simple); + if (ret) + return ret; + + return 0; +} + +static int dwc3_of_simple_remove(struct udevice *dev) +{ + struct dwc3_of_simple *simple = dev_get_platdata(dev); + + reset_release_bulk(&simple->resets); + + clk_release_bulk(&simple->clks); + + return dm_scan_fdt_dev(dev); +} + +static const struct udevice_id dwc3_of_simple_ids[] = { + { .compatible = "amlogic,meson-gxl-dwc3" }, + { } +}; + +U_BOOT_DRIVER(dwc3_of_simple) = { + .name = "dwc3-of-simple", + .id = UCLASS_SIMPLE_BUS, + .of_match = dwc3_of_simple_ids, + .probe = dwc3_of_simple_probe, + .remove = dwc3_of_simple_remove, + .platdata_auto_alloc_size = sizeof(struct dwc3_of_simple), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +};