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Date:   Thu, 22 Jul 2021 12:01:05 +0800
From:   Jason Lai <jasonlai.genesyslogic@...il.com>
To:     ulf.hansson@...aro.org, adrian.hunter@...el.com
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        ben.chuang@...esyslogic.com.tw, greg.tu@...esyslogic.com.tw,
        jason.lai@...esyslogiv.com.tw,
        AKASHI Takahiro <takahiro.akashi@...aro.org>
Subject: [RFC PATCH v3.2 10/29] mmc: sdhci: add UHS-II module

This patch adds sdhci-uhs2.c as a module for UHS-II support.
This is a skelton for further development in this patch series.

Signed-off-by: Ben Chuang <ben.chuang@...esyslogic.com.tw>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org>
---
 drivers/mmc/host/Makefile     |  1 +
 drivers/mmc/host/sdhci-uhs2.c | 46 +++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 drivers/mmc/host/sdhci-uhs2.c

diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 14004cc09aaa..6522f130245f 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..f29d3a4ed43c
--- /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 <ben.chuang@...esyslogic.com.tw>
+ *  Copyright (C) 2020 Linaro Limited
+ *  Author: AKASHI Takahiro <takahiro.akashi@...aro.org>
+ */
+
+#include <linux/module.h>
+
+#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_exit(void)
+{
+}
+module_exit(sdhci_uhs2_exit);
+
+MODULE_AUTHOR("Intel, Genesys Logic, Linaro");
+MODULE_DESCRIPTION("MMC UHS-II Support");
+MODULE_LICENSE("GPL v2");
--
2.32.0

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