From patchwork Mon Apr 7 12:38:51 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang X-Patchwork-Id: 14040415 Received: from mail-m49197.qiye.163.com (mail-m49197.qiye.163.com [45.254.49.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B24AA2505CE; Mon, 7 Apr 2025 12:40:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.254.49.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029624; cv=none; b=n5T5+3+EJ/wy3/lMkfwfC1tD71V4e42EfoWpAFXITUheDm2Xa8umVg5lAkmcvagu6Z2mTL47uC9Bq0ZBiuQbLtDjIu9cm/Wc2N00VB1mQAT7qmpFyJLzMZ6AhB0QJN4Sdh3aB7I/OTBHTbPKyjWReXrFNGN6HJDaFPlCv2TmreA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744029624; c=relaxed/simple; bh=Fd/9MKedec8AShJy/y3d+yVIscBZfEuehyAXjlgnTKA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=sms2ToXkOBJyVKecCC0mNoQRbS/sxkC7xYRTpcguH+nwjBshZ6+EnXxc62TcGmzju3Ssb10bp6i0qzW2L3lYKWOtGhtrssSFHnNZbdAeUK0I8bQcfXTX7r2YfcEWwBpILBnrmR2+Cf4XB5+6JvI7ImbNABi5vY905zroNHUNb2Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn; spf=pass smtp.mailfrom=whut.edu.cn; arc=none smtp.client-ip=45.254.49.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=whut.edu.cn Received: from [127.0.0.1] (gy-adaptive-ssl-proxy-2-entmail-virt205.gy.ntes [27.18.106.237]) by smtp.qiye.163.com (Hmail) with ESMTP id 10f021904; Mon, 7 Apr 2025 20:40:12 +0800 (GMT+08:00) From: Ze Huang Date: Mon, 07 Apr 2025 20:38:51 +0800 Subject: [PATCH 6/7] usb: dwc3: add spacemit dwc3 glue layer driver Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250407-b4-k1-usb3-v3-2-v1-6-bf0bcc41c9ba@whut.edu.cn> References: <20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn> In-Reply-To: <20250407-b4-k1-usb3-v3-2-v1-0-bf0bcc41c9ba@whut.edu.cn> To: Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Ze Huang , Greg Kroah-Hartman , Philipp Zabel , Thinh Nguyen , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1744029565; l=5058; i=huangze@whut.edu.cn; s=20250325; h=from:subject:message-id; bh=Fd/9MKedec8AShJy/y3d+yVIscBZfEuehyAXjlgnTKA=; b=0oUjkiZkghcan3Psxy1PQme5aj6x1I1dcVUwNTyPXUaLSXxVPZ0e6STZc1N2XerGnhy5DyYpF CIkNmhVHWDHAM5Gc+FVLzCdtgoY3vrDb2i6BxTZdIXmyjD/kZoCS4ZX X-Developer-Key: i=huangze@whut.edu.cn; a=ed25519; pk=C3zfn/kH6oMJickaXBa8dxTZO68EBiD93F+tAenboRA= X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVlDTE8eVkkZQk9OHxhOHRoYGlYeHw5VEwETFhoSFy QUDg9ZV1kYEgtZQVlJTFVKQ1VKS01VSUhMWVdZFhoPEhUdFFlBWU9LSFVKS0hKTkxOVUpLS1VKQk tLWQY+ X-HM-Tid: 0a961043f94e03a1kunm10f021904 X-HM-MType: 10 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Ngw6AQw4LjICA0woEhYrGjoT Qw9PCQJVSlVKTE9PS0lCTUpCSkJDVTMWGhIXVRMOGhUcAR47DBMOD1UeHw5VGBVFWVdZEgtZQVlJ TFVKQ1VKS01VSUhMWVdZCAFZQU1NQk03Bg++ Add SpacemiT glue logic to support dwc3 HC on K1 SoC. The driver manages clock, reset and interrupt resource. Signed-off-by: Ze Huang --- drivers/usb/dwc3/Kconfig | 7 +++ drivers/usb/dwc3/Makefile | 1 + drivers/usb/dwc3/dwc3-spacemit.c | 127 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 135 insertions(+) diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 310d182e10b50b253d7e5a51674806e6ec442a2a..3c30680fa4f83565fc03c6800e867c6ced0fe101 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -189,4 +189,11 @@ config USB_DWC3_RTK or dual-role mode. Say 'Y' or 'M' if you have such device. +config USB_DWC3_SPACEMIT + tristate "Spacemit Platforms" + default USB_DWC3 + help + Support SPACEMIT platforms with DesignWare Core USB3 IP. + Say 'Y' or 'M' here if you have one such device + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 124eda2522d9c1f4caab222ec9770d0deaf655fc..61a87765c0c591e0a53c33b5a6544db056166f96 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -56,3 +56,4 @@ obj-$(CONFIG_USB_DWC3_IMX8MP) += dwc3-imx8mp.o obj-$(CONFIG_USB_DWC3_XILINX) += dwc3-xilinx.o obj-$(CONFIG_USB_DWC3_OCTEON) += dwc3-octeon.o obj-$(CONFIG_USB_DWC3_RTK) += dwc3-rtk.o +obj-$(CONFIG_USB_DWC3_SPACEMIT) += dwc3-spacemit.o diff --git a/drivers/usb/dwc3/dwc3-spacemit.c b/drivers/usb/dwc3/dwc3-spacemit.c new file mode 100644 index 0000000000000000000000000000000000000000..4574ad3b34a200ffe999c7da61b74c2ef33c0483 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-spacemit.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * dwc3-spacemit.c - Spacemit DWC3 Specific Glue layer + * + * Copyright (C) 2025 SpacemiT (Hangzhou) Technology Co. Ltd + * + * Author: Wilson + * Contributor: Ze Huang + */ + +#include +#include +#include +#include +#include +#include + +struct dwc3_spacemit { + struct device *dev; + struct clk *clk; + struct reset_control *reset; +}; + +static int dwc3_spacemit_init(struct dwc3_spacemit *data) +{ + struct device *dev = data->dev; + int ret = 0; + + data->reset = devm_reset_control_get(dev, NULL); + if (IS_ERR(data->reset)) + return dev_err_probe(dev, PTR_ERR(data->reset), "failed to get reset\n"); + + ret = reset_control_assert(data->reset); + if (ret) + return dev_err_probe(dev, ret, "failed to assert reset\n"); + + usleep_range(10, 20); + + ret = reset_control_deassert(data->reset); + if (ret) + return dev_err_probe(dev, ret, "failed to deassert reset\n"); + + return 0; +} + +static int dwc3_spacemit_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct dwc3_spacemit *spacemit; + int ret; + + spacemit = devm_kzalloc(dev, sizeof(*spacemit), GFP_KERNEL); + if (!spacemit) + return -ENOMEM; + + spacemit->dev = dev; + + platform_set_drvdata(pdev, spacemit); + + spacemit->clk = devm_clk_get_enabled(dev, NULL); + if (IS_ERR(spacemit->clk)) + return dev_err_probe(dev, PTR_ERR(spacemit->clk), "Failed to get clock\n"); + + ret = dwc3_spacemit_init(spacemit); + if (ret) + return dev_err_probe(dev, ret, "failed to init SpacemiT USB3 glue\n"); + + ret = of_platform_populate(node, NULL, NULL, dev); + if (ret) + dev_err_probe(dev, ret, "failed to add dwc3 core\n"); + + return 0; +} + +static void dwc3_spacemit_remove(struct platform_device *pdev) +{ + of_platform_depopulate(&pdev->dev); +} + +static const struct of_device_id spacemit_dwc3_match[] = { + { .compatible = "spacemit,k1-dwc3", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, spacemit_dwc3_match); + +#ifdef CONFIG_PM_SLEEP +static int dwc3_spacemit_suspend(struct device *dev) +{ + struct dwc3_spacemit *spacemit = dev_get_drvdata(dev); + + clk_disable_unprepare(spacemit->clk); + + return 0; +} + +static int dwc3_spacemit_resume(struct device *dev) +{ + struct dwc3_spacemit *spacemit = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(spacemit->clk); + + return ret; +} + +static const struct dev_pm_ops dwc3_spacemit_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(dwc3_spacemit_suspend, dwc3_spacemit_resume) +}; +#endif /* CONFIG_PM_SLEEP */ + +static struct platform_driver dwc3_spacemit_driver = { + .probe = dwc3_spacemit_probe, + .remove = dwc3_spacemit_remove, + .driver = { + .name = "spacemit-dwc3", + .of_match_table = spacemit_dwc3_match, +#ifdef CONFIG_PM_SLEEP + .pm = &dwc3_spacemit_dev_pm_ops, +#endif /* CONFIG_PM_SLEEP */ + }, +}; +module_platform_driver(dwc3_spacemit_driver); + +MODULE_AUTHOR("Wilson "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("DesignWare USB3 Spacemit Glue Layer");