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, 109 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c/include/plat/pm.h b/arch/arm/mach-s3c/include/plat/pm.h
new file mode 100644
index 000000000000..2746137f9794
--- /dev/null
+++ b/arch/arm/mach-s3c/include/plat/pm.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2004 Simtec Electronics
+ *	http://armlinux.simtec.co.uk/
+ *	Written by Ben Dooks, <ben@simtec.co.uk>
+ */
+
+/* s3c_pm_init
+ *
+ * called from board at initialisation time to setup the power
+ * management
+*/
+
+#include <plat/pm-common.h>
+
+struct device;
+
+#ifdef CONFIG_SAMSUNG_PM
+
+extern __init int s3c_pm_init(void);
+extern __init int s3c64xx_pm_init(void);
+
+#else
+
+static inline int s3c_pm_init(void)
+{
+	return 0;
+}
+
+static inline int s3c64xx_pm_init(void)
+{
+	return 0;
+}
+#endif
+
+/* configuration for the IRQ mask over sleep */
+extern unsigned long s3c_irqwake_intmask;
+extern unsigned long s3c_irqwake_eintmask;
+
+/* per-cpu sleep functions */
+
+extern void (*pm_cpu_prep)(void);
+extern int (*pm_cpu_sleep)(unsigned long);
+
+/* Flags for PM Control */
+
+extern unsigned long s3c_pm_flags;
+
+/* from sleep.S */
+
+extern int s3c2410_cpu_suspend(unsigned long);
+
+#ifdef CONFIG_PM_SLEEP
+extern int s3c_irq_wake(struct irq_data *data, unsigned int state);
+extern void s3c_cpu_resume(void);
+#else
+#define s3c_irq_wake NULL
+#define s3c_cpu_resume NULL
+#endif
+
+#ifdef CONFIG_SAMSUNG_PM
+extern int s3c_irqext_wake(struct irq_data *data, unsigned int state);
+#else
+#define s3c_irqext_wake NULL
+#endif
+
+#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
+/**
+ * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs
+ * @set: set bits for the state of the LEDs
+ * @clear: clear bits for the state of the LEDs.
+ */
+extern void s3c_pm_debug_smdkled(u32 set, u32 clear);
+
+#else
+static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { }
+#endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */
+
+/**
+ * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ
+ *
+ * Setup all the necessary GPIO pins for waking the system on external
+ * interrupt.
+ */
+extern void s3c_pm_configure_extint(void);
+
+#ifdef CONFIG_GPIO_SAMSUNG
+/**
+ * samsung_pm_restore_gpios() - restore the state of the gpios after sleep.
+ *
+ * Restore the state of the GPIO pins after sleep, which may involve ensuring
+ * that we do not glitch the state of the pins from that the bootloader's
+ * resume code has done.
+*/
+extern void samsung_pm_restore_gpios(void);
+
+/**
+ * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep.
+ *
+ * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios().
+ */
+extern void samsung_pm_save_gpios(void);
+#else
+static inline void samsung_pm_restore_gpios(void) {}
+static inline void samsung_pm_save_gpios(void) {}
+#endif
+
+extern void s3c_pm_save_core(void);
+extern void s3c_pm_restore_core(void);