From patchwork Thu Aug 29 10:15:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Victor Shih X-Patchwork-Id: 823785 Received: from mail-pf1-f179.google.com (mail-pf1-f179.google.com [209.85.210.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C64E18E03E; Thu, 29 Aug 2024 10:16:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724926587; cv=none; b=OFelLJbBSNyyFViylyzfGnSLTkOcruxIe312WNCdD1pQcQEuB1qC/30K/c7QrnRC9hnP1ji+qglFq1oNSUosSs85JjhA2/kM8+m/7nklTeFLtGFD9y/ALij3R++9VBy/5RUh4Qrc+Kz4W7yLIUPagEgUM5toNNxCPXjBUFAyZeY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724926587; c=relaxed/simple; bh=guM1f/siCslHATM4oinaJJPdY2igGntUfF873uW1+ms=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=rQ0toagu3Jo0T+N6MJhyCj15TTWckila0wH5KAhOhbBp/axS/50tW28Xky9qGYN267x1oEAl8dbABOh3F3SCrKH8e/6rlxDUgHahmK6CQNeHEL9XJNvETswZCEmXUgoGorSmpeB/OCahiYB7RINSAWpLBGpX9QP3AdnIIK4SRZ4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=kQGsMav/; arc=none smtp.client-ip=209.85.210.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="kQGsMav/" Received: by mail-pf1-f179.google.com with SMTP id d2e1a72fcca58-715e64ea7d1so344104b3a.0; Thu, 29 Aug 2024 03:16:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1724926585; x=1725531385; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=5j1RKBUtNF04ic8Rg5kT45Wt+9uKp7eSOnxzixOp7AQ=; b=kQGsMav/4U5xGtepGhzD3Oo+wdLQpYF/PwW+0HRP42tBKessxa25cXC7pZryddqdY4 Dr2ic1DYGcfiqHtzQyPDYyogRGzpu9CdImBXrjtfHTsweh8Kr6nQg+l+2ikoLqt7hZKS Tq7b6j+4wiPBupToA2va1/eqqtNlnJKr+dZAYMy5LrjX78i7B70Hh14nFuLlvZ6aZfnr aBQSSpY0RYljJX+O3tAvTqd6ITYqDi9vIt6JYU+wSxfFnzqi5SG3ca/Y5gGv6WCR2GJJ XY33p88MO/5h+CABlNimdRKei7JX/s6QbhZY3Ldl8dLhkpz/Ia4FEVvpbPoJFie8CUK2 r8Zg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724926585; x=1725531385; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=5j1RKBUtNF04ic8Rg5kT45Wt+9uKp7eSOnxzixOp7AQ=; b=WNGuBPKTgiFtOJVvp9nnvm9yWSBQGfzWixkttqZK8ONQiXOzNu6yHsAgC3TLtjpecR WpxAk+1NxCXw6q/iQ98oQT5UW5bcLkVROpsldzUGatxPEDZQsg1wQkeXB4y7fJ7pSjjC 25JbZCsy558BD9xh0NlmOhnEmHhjviUNxhwuig055QaxBZNI4lXuaJNUMYWgJnwSboaQ pmbiC4RgLp619URgBEyuMlmYopZJPndh99f27RVQLkNwBBbt5AbB6b5rDItTcrdESn6j QBdj+2gOypTq7obiiMtwRb2Cz7mNzA1yrcK2bB5d3RKNrxHq8fxBd2JcrWmRIXa+a+49 HMag== X-Forwarded-Encrypted: i=1; AJvYcCXtjNmJQWJk/jX1aVh/q8UmAUK0tYwPg2yJ0kPdn1wkTb/GC3yvaEp+Ui0nC7yCHe807MUXWzSFezJuN+E=@vger.kernel.org X-Gm-Message-State: AOJu0Yyh4D3qfW1HPD1s+V8BrbBflznvqvO+MyPbzEkvJRVo1/sNi27U FQj0MjAkqC6rYgmO24OW5uABUN4o4Z8SDWce6fFVlActIKV26Kci X-Google-Smtp-Source: AGHT+IEUkMHdAycjE8Cnj+pkOdUQkApNte9XNFLy405bkgbzjij0GLOZPLldX3O0UeeUbdwB/7HJlQ== X-Received: by 2002:a05:6a21:1394:b0:1c4:2132:e205 with SMTP id adf61e73a8af0-1cce1125ca3mr1820513637.48.1724926585496; Thu, 29 Aug 2024 03:16:25 -0700 (PDT) Received: from localhost.localdomain ([2402:7500:479:a52:632f:b914:4ddf:273]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-715e56d77eesm816577b3a.153.2024.08.29.03.16.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Aug 2024 03:16:25 -0700 (PDT) From: Victor Shih To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, benchuanggli@gmail.com, Lucas.Lai@genesyslogic.com.tw, HL.Liu@genesyslogic.com.tw, Greg.tu@genesyslogic.com.tw, dlunev@chromium.org, Victor Shih , Ben Chuang , AKASHI Takahiro , Victor Shih Subject: [PATCH V19 09/22] mmc: sdhci: add UHS-II module and add a kernel configuration Date: Thu, 29 Aug 2024 18:15:26 +0800 Message-Id: <20240829101539.5058-10-victorshihgli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240829101539.5058-1-victorshihgli@gmail.com> References: <20240829101539.5058-1-victorshihgli@gmail.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Victor Shih This patch adds sdhci-uhs2.c as a module for UHS-II support. This is a skeleton for further development in this patch series. This kernel configuration, CONFIG_MMC_SDHCI_UHS2, will be used in the following commits to indicate UHS-II specific code in sdhci controllers. Signed-off-by: Ben Chuang Signed-off-by: AKASHI Takahiro Signed-off-by: Victor Shih Acked-by: Adrian Hunter --- Updates in V9: - Modify the commit message. Updates in V8: - Modify MODULE_LICENSE from "GPL v2" to "GPL". Updates in V6: - Merage V5 of patch[7] and patch[9] in to V6 of patch[8]. --- drivers/mmc/host/Kconfig | 9 +++++++ drivers/mmc/host/Makefile | 1 + drivers/mmc/host/sdhci-uhs2.c | 46 +++++++++++++++++++++++++++++++++++ 3 files changed, 56 insertions(+) create mode 100644 drivers/mmc/host/sdhci-uhs2.c diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 7199cb0bd0b9..f636af8a98df 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -98,6 +98,15 @@ config MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER This is the case for the Nintendo Wii SDHCI. +config MMC_SDHCI_UHS2 + tristate "UHS2 support on SDHCI controller" + depends on MMC_SDHCI + help + This option is selected by SDHCI controller drivers that want to + support UHS2-capable devices. + + If you have a controller with this feature, say Y or M here. + config MMC_SDHCI_PCI tristate "SDHCI support on PCI bus" depends on MMC_SDHCI && PCI diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 3ccffebbe59b..5147467ec825 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_MMC_PXA) += pxamci.o obj-$(CONFIG_MMC_MXC) += mxcmmc.o obj-$(CONFIG_MMC_MXS) += mxs-mmc.o obj-$(CONFIG_MMC_SDHCI) += sdhci.o +obj-$(CONFIG_MMC_SDHCI_UHS2) += sdhci-uhs2.o obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o sdhci-pci-y += sdhci-pci-core.o sdhci-pci-o2micro.o sdhci-pci-arasan.o \ sdhci-pci-dwc-mshc.o sdhci-pci-gli.o diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c new file mode 100644 index 000000000000..608f8ad5aaed --- /dev/null +++ b/drivers/mmc/host/sdhci-uhs2.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * linux/drivers/mmc/host/sdhci_uhs2.c - Secure Digital Host Controller + * Interface driver + * + * Copyright (C) 2014 Intel Corp, All Rights Reserved. + * Copyright (C) 2020 Genesys Logic, Inc. + * Authors: Ben Chuang + * Copyright (C) 2020 Linaro Limited + * Author: AKASHI Takahiro + */ + +#include + +#include "sdhci.h" +#include "sdhci-uhs2.h" + +#define DRIVER_NAME "sdhci_uhs2" +#define DBG(f, x...) \ + pr_debug(DRIVER_NAME " [%s()]: " f, __func__, ## x) + +/*****************************************************************************\ + * * + * Driver init/exit * + * * +\*****************************************************************************/ + +static int sdhci_uhs2_host_ops_init(struct sdhci_host *host) +{ + return 0; +} + +static int __init sdhci_uhs2_mod_init(void) +{ + return 0; +} +module_init(sdhci_uhs2_mod_init); + +static void __exit sdhci_uhs2_mod_exit(void) +{ +} +module_exit(sdhci_uhs2_mod_exit); + +MODULE_AUTHOR("Intel, Genesys Logic, Linaro"); +MODULE_DESCRIPTION("MMC UHS-II Support"); +MODULE_LICENSE("GPL");