sw64: gpio: add sunway builtin gpio driver

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4SPZD
CVE: NA

-------------------------------

Signed-off-by: Gu Zitao <guzitao@wxiat.com> #openEuler_contributor
Signed-off-by: NLaibin Qiu <qiulaibin@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/gpio/Kconfig

@@ -232,6 +232,15 @@ config GPIO_DWAPB
 	  Say Y or M here to build support for the Synopsys DesignWare APB
 	  GPIO block.
 
+config GPIO_SUNWAY
+	tristate "Sunway gpio driver"
+	depends on SW64
+	select GPIO_GENERIC
+	select GENERIC_IRQ_CHIP
+	help
+	  Say Y or M here to build support for the Sunway
+	  GPIO block.
+
 config GPIO_EIC_SPRD
 	tristate "Spreadtrum EIC support"
 	depends on ARCH_SPRD || COMPILE_TEST

drivers/gpio/Makefile

@@ -181,3 +181,4 @@ obj-$(CONFIG_GPIO_XTENSA)		+= gpio-xtensa.o
 obj-$(CONFIG_GPIO_ZEVIO)		+= gpio-zevio.o
 obj-$(CONFIG_GPIO_ZX)			+= gpio-zx.o
 obj-$(CONFIG_GPIO_ZYNQ)			+= gpio-zynq.o
+obj-$(CONFIG_GPIO_SUNWAY)		+= gpio-sunway.o

include/linux/platform_data/gpio-sunway.h

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright(c) 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef GPIO_SUNWAY_H
+#define GPIO_SUNWAY_H
+
+struct sunway_port_property {
+	struct fwnode_handle *fwnode;
+	unsigned int	idx;
+	unsigned int	ngpio;
+	unsigned int	gpio_base;
+	int		irq[32];
+	bool		has_irq;
+	bool		irq_shared;
+};
+
+struct sunway_platform_data {
+	struct sunway_port_property *properties;
+	unsigned int nports;
+};
+
+#endif