From patchwork Wed Apr 11 14:29:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 897209 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="FLaIpvTE"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 40Lmfz3VkKz9s1j for ; Thu, 12 Apr 2018 00:30:51 +1000 (AEST) Received: by lists.denx.de (Postfix, from userid 105) id 2645DC21D9A; Wed, 11 Apr 2018 14:29:35 +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_H3, RCVD_IN_MSPIKE_WL, 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 B42C5C21D8A; Wed, 11 Apr 2018 14:29:14 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 672D5C21C2C; Wed, 11 Apr 2018 14:29:13 +0000 (UTC) Received: from mail-wm0-f67.google.com (mail-wm0-f67.google.com [74.125.82.67]) by lists.denx.de (Postfix) with ESMTPS id F1846C21C3F for ; Wed, 11 Apr 2018 14:29:12 +0000 (UTC) Received: by mail-wm0-f67.google.com with SMTP id r191so4575256wmg.4 for ; Wed, 11 Apr 2018 07:29:12 -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=iHCueS6y1VGlM+iDMwOgR4vsD/Ffkph5DfBAUc8eaEo=; b=FLaIpvTEp5Y/y/Gg+hnSGNVDgxlwSUxULMWQtP2ZWr2s8RGpdI121gw8kMRksyQwb/ Ksx6kg0aadLmXGG5xwNzZrDAfhfowfSOusq+Ey2R/f27BZ+JeexiJv2rifBq8Z4ACKUT a3vusdyzf+FLfOh2Y3thwQl4l0GZgfTk+HSH7OjBxxjmd/mXr8SwP9axt5o/IopIhGGt BaWOmkmMz4tbpqqzbUZ0kB3x13mWLGpLGJ7Oqm9686zrBZgxUMXVHpuVprx4N4c2MK4F Oiohs8HXHjMXDnOzPc1JtJWLdJ349MpYA30Gj+zutnkH3qZPMgU7kkvLBwXCiF+M89rm KpGg== 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=iHCueS6y1VGlM+iDMwOgR4vsD/Ffkph5DfBAUc8eaEo=; b=jwI4xaIagEhz0ALUNgQ2NoO8l6eIkBTuMpBhea7vr7NC6i8wtMqIATl2IGpxL0Xan+ LKEvVHZmLwECXQ5pNiSVBOAdrfkh6cRWkWus/iVkPKY/k8poKTY1gCqpmOJpiEuCv+hw zNQcMOQlS29iO26A+Z0DdF4o9H/o4p0Qr+fryaNdaTv9clHgy7PUCaSVLVoDMv3gXqKK eiLhz5Wor5dKUAM/Piev8FV3y3aX8F89ZfAAxXH8V/t6ujue+HWpaiWiXElaPq7s1dXG lTvafF2i7X6650X1NKNMhjOr+j6CR6dDqL3/Doypw6SM+Bs0BhijcQgMNu1L/VaDHnj1 UmlQ== X-Gm-Message-State: ALQs6tDl1EZCsPCpIpAjCTUYLIFGKD2qUCkR9546ofZRFNWTsfTHaz8a xyMk50t+yWfOClWqOuc+2iF6+rwXtqU= X-Google-Smtp-Source: AIpwx49KLMhM3pM2bVzejr1xYu/ons4/zN+IH3YJLnwd/yjz/E2TELj88KhoDNK9qxPeaaqiNmUmGg== X-Received: by 10.28.111.194 with SMTP id c63mr2598633wmi.25.1523456952158; Wed, 11 Apr 2018 07:29:12 -0700 (PDT) Received: from bender.baylibre.local ([90.63.244.31]) by smtp.gmail.com with ESMTPSA id k35sm1132575wre.55.2018.04.11.07.29.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 11 Apr 2018 07:29:11 -0700 (PDT) From: Neil Armstrong To: u-boot@lists.denx.de, marex@denx.de, bmeng.cn@gmail.com Date: Wed, 11 Apr 2018 16:29:05 +0200 Message-Id: <1523456947-4242-2-git-send-email-narmstrong@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1523456947-4242-1-git-send-email-narmstrong@baylibre.com> References: <1523456947-4242-1-git-send-email-narmstrong@baylibre.com> Cc: linux-amlogic@lists.infradead.org Subject: [U-Boot] [PATCH v2 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 --- drivers/usb/host/Kconfig | 7 +++ drivers/usb/host/Makefile | 1 + drivers/usb/host/dwc3-of-simple.c | 123 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 131 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..9abe450 --- /dev/null +++ b/drivers/usb/host/dwc3-of-simple.c @@ -0,0 +1,123 @@ +/* + * 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 { +#if CONFIG_IS_ENABLED(CLK) + struct clk_bulk clks; +#endif +#if CONFIG_IS_ENABLED(DM_RESET) + struct reset_ctl_bulk resets; +#endif +}; + +#if CONFIG_IS_ENABLED(DM_RESET) +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) + return ret; + + ret = reset_deassert_bulk(&simple->resets); + if (ret) { + reset_release_bulk(&simple->resets); + return ret; + } + + return 0; +} +#endif + +#if CONFIG_IS_ENABLED(CLK) +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) + return ret; + + ret = clk_enable_bulk(&simple->clks); + if (ret) { + clk_release_bulk(&simple->clks); + return ret; + } + + return 0; +} +#endif + +static int dwc3_of_simple_probe(struct udevice *dev) +{ +#if CONFIG_IS_ENABLED(DM_RESET) || CONFIG_IS_ENABLED(CLK) + struct dwc3_of_simple *simple = dev_get_platdata(dev); + int ret; +#endif + +#if CONFIG_IS_ENABLED(CLK) + ret = dwc3_of_simple_clk_init(dev, simple); + if (ret) + return ret; +#endif + +#if CONFIG_IS_ENABLED(DM_RESET) + ret = dwc3_of_simple_reset_init(dev, simple); + if (ret) + return ret; +#endif + + return 0; +} + +static int dwc3_of_simple_remove(struct udevice *dev) +{ +#if CONFIG_IS_ENABLED(DM_RESET) || CONFIG_IS_ENABLED(CLK) + struct dwc3_of_simple *simple = dev_get_platdata(dev); +#endif + +#if CONFIG_IS_ENABLED(DM_RESET) + reset_release_bulk(&simple->resets); +#endif + +#if CONFIG_IS_ENABLED(CLK) + clk_release_bulk(&simple->clks); +#endif + + 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, +};