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

arch/arm/mach-s3c24xx/cpufreq-utils.c → arch/arm/mach-s3c/cpufreq-utils-s3c24xx.c

@@ -17,7 +17,7 @@
 
 #include <linux/soc/samsung/s3c-cpufreq-core.h>
 
-#include "regs-mem.h"
+#include "regs-mem-s3c24xx.h"
 
 /**
  * s3c2410_cpufreq_setrefresh - set SDRAM refresh value

arch/arm/mach-s3c64xx/cpuidle.c → arch/arm/mach-s3c/cpuidle-s3c64xx.c

@@ -16,8 +16,8 @@
 #include <plat/cpu.h>
 #include <mach/map.h>
 
-#include "regs-sys.h"
-#include "regs-syscon-power.h"
+#include "regs-sys-s3c64xx.h"
+#include "regs-syscon-power-s3c64xx.h"
 
 static int s3c64xx_enter_idle(struct cpuidle_device *dev,
 			      struct cpuidle_driver *drv,

arch/arm/mach-s3c64xx/dev-backlight.c → arch/arm/mach-s3c/dev-backlight-s3c64xx.c

@@ -14,7 +14,7 @@
 #include <plat/devs.h>
 #include <plat/gpio-cfg.h>
 
-#include "backlight.h"
+#include "backlight-s3c64xx.h"
 
 struct samsung_bl_drvdata {
 	struct platform_pwm_backlight_data plat_data;

arch/arm/mach-s3c24xx/fb-core.h → arch/arm/mach-s3c/fb-core-s3c24xx.h

@@ -5,8 +5,8 @@
  *
  * Samsung framebuffer driver core functions
  */
-#ifndef __ASM_PLAT_FB_CORE_H
-#define __ASM_PLAT_FB_CORE_H __FILE__
+#ifndef __ASM_PLAT_FB_CORE_S3C24XX_H
+#define __ASM_PLAT_FB_CORE_S3C24XX_H __FILE__
 
 /*
  * These functions are only for use with the core support code, such as
@@ -21,4 +21,4 @@ static inline void s3c_fb_setname(char *name)
 #endif
 }
 
-#endif /* __ASM_PLAT_FB_CORE_H */
+#endif /* __ASM_PLAT_FB_CORE_S3C24XX_H */

arch/arm/mach-s3c/include/mach/dma.h

+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifdef CONFIG_ARCH_S3C24XX
+#include "dma-s3c24xx.h"
+#endif
+
+#ifdef CONFIG_ARCH_S3C64XX
+#include "dma-s3c64xx.h"
+#endif

arch/arm/mach-s3c/include/mach/gpio-samsung.h

+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifdef CONFIG_ARCH_S3C24XX
+#include "gpio-samsung-s3c24xx.h"
+#endif
+
+#ifdef CONFIG_ARCH_S3C64XX
+#include "gpio-samsung-s3c64xx.h"
+#endif

arch/arm/mach-s3c24xx/include/mach/hardware.h → arch/arm/mach-s3c/include/mach/hardware-s3c24xx.h

@@ -6,9 +6,9 @@
  * S3C2410 - hardware
  */
 
-#ifndef __ASM_ARCH_HARDWARE_H
-#define __ASM_ARCH_HARDWARE_H
+#ifndef __ASM_ARCH_HARDWARE_S3C24XX_H
+#define __ASM_ARCH_HARDWARE_S3C24XX_H
 
 extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg);
 
-#endif /* __ASM_ARCH_HARDWARE_H */
+#endif /* __ASM_ARCH_HARDWARE_S3C24XX_H */