ARM: s3c: move into a common directory

s3c24xx and s3c64xx have a lot in common, but are split across three
separate directories, which makes the interaction of the header files
more complicated than necessary.

Move all three directories into a new mach-s3c, with a minimal
set of changes to each file.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[krzk: Rebase, add s3c24xx and s3c64xx suffix to several files, add SPDX
       headers to new files, remove plat-samsung from MAINTAINERS]
Co-developed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
https://lore.kernel.org/r/20200806182059.2431-39-krzk@kernel.org

1 files changed, 130 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c/s3c2410.c b/arch/arm/mach-s3c/s3c2410.c
new file mode 100644
index 000000000000..0013125b03ee
--- /dev/null
+++ b/arch/arm/mach-s3c/s3c2410.c
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2003-2005 Simtec Electronics
+//	Ben Dooks <ben@simtec.co.uk>
+//
+// http://www.simtec.co.uk/products/EB2410ITX/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/syscore_ops.h>
+#include <linux/serial_core.h>
+#include <linux/serial_s3c.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/io.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/map.h>
+#include <mach/gpio-samsung.h>
+#include <asm/irq.h>
+#include <asm/system_misc.h>
+
+
+#include <mach/regs-clock.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/pm.h>
+
+#include <plat/gpio-core.h>
+#include <plat/gpio-cfg.h>
+#include <plat/gpio-cfg-helpers.h>
+
+#include "s3c24xx.h"
+
+/* Initial IO mappings */
+
+static struct map_desc s3c2410_iodesc[] __initdata = {
+	IODESC_ENT(CLKPWR),
+	IODESC_ENT(TIMER),
+	IODESC_ENT(WATCHDOG),
+};
+
+/* our uart devices */
+
+/* uart registration process */
+
+void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+	s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
+}
+
+/* s3c2410_map_io
+ *
+ * register the standard cpu IO areas, and any passed in from the
+ * machine specific initialisation.
+*/
+
+void __init s3c2410_map_io(void)
+{
+	s3c24xx_gpiocfg_default.set_pull = s3c24xx_gpio_setpull_1up;
+	s3c24xx_gpiocfg_default.get_pull = s3c24xx_gpio_getpull_1up;
+
+	iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
+}
+
+struct bus_type s3c2410_subsys = {
+	.name = "s3c2410-core",
+	.dev_name = "s3c2410-core",
+};
+
+/* Note, we would have liked to name this s3c2410-core, but we cannot
+ * register two subsystems with the same name.
+ */
+struct bus_type s3c2410a_subsys = {
+	.name = "s3c2410a-core",
+	.dev_name = "s3c2410a-core",
+};
+
+static struct device s3c2410_dev = {
+	.bus		= &s3c2410_subsys,
+};
+
+/* need to register the subsystem before we actually register the device, and
+ * we also need to ensure that it has been initialised before any of the
+ * drivers even try to use it (even if not on an s3c2410 based system)
+ * as a driver which may support both 2410 and 2440 may try and use it.
+*/
+
+static int __init s3c2410_core_init(void)
+{
+	return subsys_system_register(&s3c2410_subsys, NULL);
+}
+
+core_initcall(s3c2410_core_init);
+
+static int __init s3c2410a_core_init(void)
+{
+	return subsys_system_register(&s3c2410a_subsys, NULL);
+}
+
+core_initcall(s3c2410a_core_init);
+
+int __init s3c2410_init(void)
+{
+	printk("S3C2410: Initialising architecture\n");
+
+#ifdef CONFIG_PM_SLEEP
+	register_syscore_ops(&s3c2410_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+#endif
+
+	return device_register(&s3c2410_dev);
+}
+
+int __init s3c2410a_init(void)
+{
+	s3c2410_dev.bus = &s3c2410a_subsys;
+	return s3c2410_init();
+}