Merge tag 'samsung-pm-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup3

Merge "Samsung PM related 2nd updates for v3.15" from Kukjin Kim:

From Tomasz Figa <t.figa@samsung.com>:
Current Samsung PM code is heavily unprepared for multiplatform
systems. The design implies accessing functions and global
variables defined in particular mach- subdirectory from common
code in plat-, which is not allowed when building ARCH_MULTIPLATFORM.
In addition there is a lot of forced code unification, which makes
common function handle any possible quirks of all supported SoCs.
In the end this design turned out to not work too well, ending with
a lot of empty functions exported from mach-, just because code in
common pm.c calls them. Moreover, recent trend of moving lower level
suspend/resume code to proper drivers, like pinctrl or clk, made a
lot of code there redundant, especially on DT-only platforms like
Exynos.

Note that this branch is based on previous tags/samsung-pm-1 and merge
tags/samsung-cleanup-2 because of fix build error from recent changes
of <linux/serial_s3c.h>

* tag 'samsung-pm-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Fix compilation error in cpuidle.c
  ARM: S5P64X0: Explicitly include linux/serial_s3c.h in mach/pm-core.h
  ARM: S3C64XX: Fix build for implicit serial_s3c.h inclusion
  serial: s3c: Fix build of header without serial_core.h preinclusion
  ARM: EXYNOS: Allow wake-up using GIC interrupts
  ARM: EXYNOS: Stop using legacy Samsung PM code
  ARM: EXYNOS: Remove PM initcalls and useless indirection
  ARM: EXYNOS: Fix abuse of CONFIG_PM
  ARM: SAMSUNG: Move s3c_pm_check_* prototypes to plat/pm-common.h
  ARM: SAMSUNG: Move common save/restore helpers to separate file
  ARM: SAMSUNG: Move Samsung PM debug code into separate file
  ARM: SAMSUNG: Consolidate PM debug functions
  ARM: SAMSUNG: Use debug_ll_addr() to get UART base address
  ARM: SAMSUNG: Save UART DIVSLOT register based on SoC type
  ARM: SAMSUNG: Add soc_is_s3c2410() helper
  ARM: EXYNOS: Do not resume l2x0 if not enabled before suspend

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

9 files changed, 292 insertions, 267 deletions

diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 9267d29549b4..25c826ed3b65 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -47,9 +47,11 @@ obj-$(CONFIG_SAMSUNG_DMADEV)	+= dma-ops.o
 
 # PM support
 
+obj-$(CONFIG_PM_SLEEP)          += pm-common.o
 obj-$(CONFIG_SAMSUNG_PM)        += pm.o
 obj-$(CONFIG_SAMSUNG_PM_GPIO)   += pm-gpio.o
 obj-$(CONFIG_SAMSUNG_PM_CHECK)  += pm-check.o
+obj-$(CONFIG_SAMSUNG_PM_DEBUG)  += pm-debug.o
 
 obj-$(CONFIG_SAMSUNG_WAKEMASK)  += wakeup-mask.o
 obj-$(CONFIG_SAMSUNG_WDT_RESET) += watchdog-reset.o
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index 31164b34d4c4..d762533b856f 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -20,6 +20,9 @@
 
 extern unsigned long samsung_cpu_id;
 
+#define S3C2410_CPU_ID          0x32410000
+#define S3C2410_CPU_MASK        0xFFFFFFFF
+
 #define S3C24XX_CPU_ID          0x32400000
 #define S3C24XX_CPU_MASK        0xFFF00000
 
@@ -56,6 +59,7 @@ static inline int is_samsung_##name(void)	\
         return ((samsung_cpu_id & mask) == (id & mask));        \
 }
 
+IS_SAMSUNG_CPU(s3c2410, S3C2410_CPU_ID, S3C2410_CPU_MASK)
 IS_SAMSUNG_CPU(s3c24xx, S3C24XX_CPU_ID, S3C24XX_CPU_MASK)
 IS_SAMSUNG_CPU(s3c2412, S3C2412_CPU_ID, S3C2412_CPU_MASK)
 IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK)
@@ -76,8 +80,10 @@ IS_SAMSUNG_CPU(exynos5440, EXYNOS5440_SOC_ID, EXYNOS5_SOC_MASK)
     defined(CONFIG_CPU_S3C2442) || defined(CONFIG_CPU_S3C244X) || \
     defined(CONFIG_CPU_S3C2443)
 # define soc_is_s3c24xx()       is_samsung_s3c24xx()
+# define soc_is_s3c2410()       is_samsung_s3c2410()
 #else
 # define soc_is_s3c24xx()       0
+# define soc_is_s3c2410()       0
 #endif
 
 #if defined(CONFIG_CPU_S3C2412)
diff --git a/arch/arm/plat-samsung/include/plat/pm-common.h b/arch/arm/plat-samsung/include/plat/pm-common.h
new file mode 100644
index 000000000000..8705f9e0e288
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/pm-common.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ *      Tomasz Figa <t.figa@samsung.com>
+ * Copyright (c) 2004 Simtec Electronics
+ *      http://armlinux.simtec.co.uk/
+ *      Written by Ben Dooks, <ben@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __PLAT_SAMSUNG_PM_COMMON_H
+#define __PLAT_SAMSUNG_PM_COMMON_H __FILE__
+
+#include <linux/irq.h>
+
+/* sleep save info */
+
+/**
+ * struct sleep_save - save information for shared peripherals.
+ * @reg: Pointer to the register to save.
+ * @val: Holder for the value saved from reg.
+ *
+ * This describes a list of registers which is used by the pm core and
+ * other subsystem to save and restore register values over suspend.
+ */
+struct sleep_save {
+        void __iomem    *reg;
+        unsigned long   val;
+};
+
+#define SAVE_ITEM(x) \
+        { .reg = (x) }
+
+/* helper functions to save/restore lists of registers. */
+
+extern void s3c_pm_do_save(struct sleep_save *ptr, int count);
+extern void s3c_pm_do_restore(const struct sleep_save *ptr, int count);
+extern void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count);
+
+/* PM debug functions */
+
+/**
+ * struct pm_uart_save - save block for core UART
+ * @ulcon: Save value for S3C2410_ULCON
+ * @ucon: Save value for S3C2410_UCON
+ * @ufcon: Save value for S3C2410_UFCON
+ * @umcon: Save value for S3C2410_UMCON
+ * @ubrdiv: Save value for S3C2410_UBRDIV
+ *
+ * Save block for UART registers to be held over sleep and restored if they
+ * are needed (say by debug).
+*/
+struct pm_uart_save {
+        u32     ulcon;
+        u32     ucon;
+        u32     ufcon;
+        u32     umcon;
+        u32     ubrdiv;
+        u32     udivslot;
+};
+
+#ifdef CONFIG_SAMSUNG_PM_DEBUG
+/**
+ * s3c_pm_dbg() - low level debug function for use in suspend/resume.
+ * @msg: The message to print.
+ *
+ * This function is used mainly to debug the resume process before the system
+ * can rely on printk/console output. It uses the low-level debugging output
+ * routine printascii() to do its work.
+ */
+extern void s3c_pm_dbg(const char *msg, ...);
+
+/**
+ * s3c_pm_debug_init() - suspend/resume low level debug initialization.
+ * @base: Virtual base of UART to use for suspend/resume debugging.
+ *
+ * This function needs to be called before S3C_PMDBG() can be used, to set up
+ * UART port base address and configuration.
+ */
+extern void s3c_pm_debug_init(void);
+
+#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)
+
+extern void s3c_pm_save_uarts(void);
+extern void s3c_pm_restore_uarts(void);
+#else
+#define S3C_PMDBG(fmt...) pr_debug(fmt)
+#define s3c_pm_debug_init() do { } while (0)
+
+static inline void s3c_pm_save_uarts(void) { }
+static inline void s3c_pm_restore_uarts(void) { }
+#endif
+
+/* suspend memory checking */
+
+#ifdef CONFIG_SAMSUNG_PM_CHECK
+extern void s3c_pm_check_prepare(void);
+extern void s3c_pm_check_restore(void);
+extern void s3c_pm_check_cleanup(void);
+extern void s3c_pm_check_store(void);
+#else
+#define s3c_pm_check_prepare() do { } while (0)
+#define s3c_pm_check_restore() do { } while (0)
+#define s3c_pm_check_cleanup() do { } while (0)
+#define s3c_pm_check_store()   do { } while (0)
+#endif
+
+#endif
diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h
index ff6063f0d5ea..e17d871b934c 100644
--- a/arch/arm/plat-samsung/include/plat/pm.h
+++ b/arch/arm/plat-samsung/include/plat/pm.h
@@ -15,7 +15,7 @@
  * management
 */
 
-#include <linux/irq.h>
+#include <plat/pm-common.h>
 
 struct device;
 
@@ -54,56 +54,10 @@ extern int (*pm_cpu_sleep)(unsigned long);
 
 extern unsigned long s3c_pm_flags;
 
-extern unsigned char pm_uart_udivslot;  /* true to save UART UDIVSLOT */
-
 /* from sleep.S */
 
 extern int s3c2410_cpu_suspend(unsigned long);
 
-/* sleep save info */
-
-/**
- * struct sleep_save - save information for shared peripherals.
- * @reg: Pointer to the register to save.
- * @val: Holder for the value saved from reg.
- *
- * This describes a list of registers which is used by the pm core and
- * other subsystem to save and restore register values over suspend.
- */
-struct sleep_save {
-        void __iomem    *reg;
-        unsigned long   val;
-};
-
-#define SAVE_ITEM(x) \
-        { .reg = (x) }
-
-/**
- * struct pm_uart_save - save block for core UART
- * @ulcon: Save value for S3C2410_ULCON
- * @ucon: Save value for S3C2410_UCON
- * @ufcon: Save value for S3C2410_UFCON
- * @umcon: Save value for S3C2410_UMCON
- * @ubrdiv: Save value for S3C2410_UBRDIV
- *
- * Save block for UART registers to be held over sleep and restored if they
- * are needed (say by debug).
-*/
-struct pm_uart_save {
-        u32     ulcon;
-        u32     ucon;
-        u32     ufcon;
-        u32     umcon;
-        u32     ubrdiv;
-        u32     udivslot;
-};
-
-/* helper functions to save/restore lists of registers. */
-
-extern void s3c_pm_do_save(struct sleep_save *ptr, int count);
-extern void s3c_pm_do_restore(const struct sleep_save *ptr, int count);
-extern void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count);
-
 #ifdef CONFIG_SAMSUNG_PM
 extern int s3c_irq_wake(struct irq_data *data, unsigned int state);
 extern int s3c_irqext_wake(struct irq_data *data, unsigned int state);
@@ -114,24 +68,6 @@ extern void s3c_cpu_resume(void);
 #define s3c_cpu_resume NULL
 #endif
 
-/* PM debug functions */
-
-#ifdef CONFIG_SAMSUNG_PM_DEBUG
-/**
- * s3c_pm_dbg() - low level debug function for use in suspend/resume.
- * @msg: The message to print.
- *
- * This function is used mainly to debug the resume process before the system
- * can rely on printk/console output. It uses the low-level debugging output
- * routine printascii() to do its work.
- */
-extern void s3c_pm_dbg(const char *msg, ...);
-
-#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)
-#else
-#define S3C_PMDBG(fmt...) printk(KERN_DEBUG fmt)
-#endif
-
 #ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
 /**
  * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs
@@ -144,20 +80,6 @@ extern void s3c_pm_debug_smdkled(u32 set, u32 clear);
 static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { }
 #endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */
 
-/* suspend memory checking */
-
-#ifdef CONFIG_SAMSUNG_PM_CHECK
-extern void s3c_pm_check_prepare(void);
-extern void s3c_pm_check_restore(void);
-extern void s3c_pm_check_cleanup(void);
-extern void s3c_pm_check_store(void);
-#else
-#define s3c_pm_check_prepare() do { } while(0)
-#define s3c_pm_check_restore() do { } while(0)
-#define s3c_pm_check_cleanup() do { } while(0)
-#define s3c_pm_check_store()   do { } while(0)
-#endif
-
 /**
  * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ
  *
diff --git a/arch/arm/plat-samsung/pm-check.c b/arch/arm/plat-samsung/pm-check.c
index 3cbd62666b1e..04aff2c31b46 100644
--- a/arch/arm/plat-samsung/pm-check.c
+++ b/arch/arm/plat-samsung/pm-check.c
@@ -19,7 +19,7 @@
 #include <linux/ioport.h>
 #include <linux/slab.h>
 
-#include <plat/pm.h>
+#include <plat/pm-common.h>
 
 #if CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE < 1
 #error CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE must be a positive non-zero value
diff --git a/arch/arm/plat-samsung/pm-common.c b/arch/arm/plat-samsung/pm-common.c
new file mode 100644
index 000000000000..515cd53372bd
--- /dev/null
+++ b/arch/arm/plat-samsung/pm-common.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ *      Tomasz Figa <t.figa@samsung.com>
+ * Copyright (C) 2008 Openmoko, Inc.
+ * Copyright (C) 2004-2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * Samsung common power management helper functions.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+
+#include <plat/pm-common.h>
+
+/* helper functions to save and restore register state */
+
+/**
+ * s3c_pm_do_save() - save a set of registers for restoration on resume.
+ * @ptr: Pointer to an array of registers.
+ * @count: Size of the ptr array.
+ *
+ * Run through the list of registers given, saving their contents in the
+ * array for later restoration when we wakeup.
+ */
+void s3c_pm_do_save(struct sleep_save *ptr, int count)
+{
+        for (; count > 0; count--, ptr++) {
+                ptr->val = __raw_readl(ptr->reg);
+                S3C_PMDBG("saved %p value %08lx\n", ptr->reg, ptr->val);
+        }
+}
+
+/**
+ * s3c_pm_do_restore() - restore register values from the save list.
+ * @ptr: Pointer to an array of registers.
+ * @count: Size of the ptr array.
+ *
+ * Restore the register values saved from s3c_pm_do_save().
+ *
+ * Note, we do not use S3C_PMDBG() in here, as the system may not have
+ * restore the UARTs state yet
+*/
+
+void s3c_pm_do_restore(const struct sleep_save *ptr, int count)
+{
+        for (; count > 0; count--, ptr++) {
+                pr_debug("restore %p (restore %08lx, was %08x)\n",
+                                ptr->reg, ptr->val, __raw_readl(ptr->reg));
+
+                __raw_writel(ptr->val, ptr->reg);
+        }
+}
+
+/**
+ * s3c_pm_do_restore_core() - early restore register values from save list.
+ *
+ * This is similar to s3c_pm_do_restore() except we try and minimise the
+ * side effects of the function in case registers that hardware might need
+ * to work has been restored.
+ *
+ * WARNING: Do not put any debug in here that may effect memory or use
+ * peripherals, as things may be changing!
+*/
+
+void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count)
+{
+        for (; count > 0; count--, ptr++)
+                __raw_writel(ptr->val, ptr->reg);
+}
diff --git a/arch/arm/plat-samsung/pm-debug.c b/arch/arm/plat-samsung/pm-debug.c
new file mode 100644
index 000000000000..8f19f66388dd
--- /dev/null
+++ b/arch/arm/plat-samsung/pm-debug.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ *      Tomasz Figa <t.figa@samsung.com>
+ * Copyright (C) 2008 Openmoko, Inc.
+ * Copyright (C) 2004-2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * Samsung common power management (suspend to RAM) debug support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/serial_core.h>
+#include <linux/io.h>
+
+#include <asm/mach/map.h>
+
+#include <plat/cpu.h>
+#include <plat/pm-common.h>
+
+#ifdef CONFIG_SAMSUNG_ATAGS
+#include <mach/pm-core.h>
+#else
+static inline void s3c_pm_debug_init_uart(void) {}
+static inline void s3c_pm_arch_update_uart(void __iomem *regs,
+                                           struct pm_uart_save *save) {}
+#endif
+
+static struct pm_uart_save uart_save;
+
+extern void printascii(const char *);
+
+void s3c_pm_dbg(const char *fmt, ...)
+{
+        va_list va;
+        char buff[256];
+
+        va_start(va, fmt);
+        vsnprintf(buff, sizeof(buff), fmt, va);
+        va_end(va);
+
+        printascii(buff);
+}
+
+void s3c_pm_debug_init(void)
+{
+        /* restart uart clocks so we can use them to output */
+        s3c_pm_debug_init_uart();
+}
+
+static inline void __iomem *s3c_pm_uart_base(void)
+{
+        unsigned long paddr;
+        unsigned long vaddr;
+
+        debug_ll_addr(&paddr, &vaddr);
+
+        return (void __iomem *)vaddr;
+}
+
+void s3c_pm_save_uarts(void)
+{
+        void __iomem *regs = s3c_pm_uart_base();
+        struct pm_uart_save *save = &uart_save;
+
+        save->ulcon = __raw_readl(regs + S3C2410_ULCON);
+        save->ucon = __raw_readl(regs + S3C2410_UCON);
+        save->ufcon = __raw_readl(regs + S3C2410_UFCON);
+        save->umcon = __raw_readl(regs + S3C2410_UMCON);
+        save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV);
+
+        if (!soc_is_s3c2410())
+                save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
+
+        S3C_PMDBG("UART[%p]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
+                  regs, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
+}
+
+void s3c_pm_restore_uarts(void)
+{
+        void __iomem *regs = s3c_pm_uart_base();
+        struct pm_uart_save *save = &uart_save;
+
+        s3c_pm_arch_update_uart(regs, save);
+
+        __raw_writel(save->ulcon, regs + S3C2410_ULCON);
+        __raw_writel(save->ucon,  regs + S3C2410_UCON);
+        __raw_writel(save->ufcon, regs + S3C2410_UFCON);
+        __raw_writel(save->umcon, regs + S3C2410_UMCON);
+        __raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV);
+
+        if (!soc_is_s3c2410())
+                __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
+}
diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c
index d438e77fbf7b..f8c0f9797dcf 100644
--- a/arch/arm/plat-samsung/pm.c
+++ b/arch/arm/plat-samsung/pm.c
@@ -17,7 +17,6 @@
 #include <linux/errno.h>
 #include <linux/delay.h>
 #include <linux/of.h>
-#include <linux/serial_core.h>
 #include <linux/serial_s3c.h>
 #include <linux/io.h>
 
@@ -42,93 +41,6 @@
 
 unsigned long s3c_pm_flags;
 
-/* Debug code:
- *
- * This code supports debug output to the low level UARTs for use on
- * resume before the console layer is available.
-*/
-
-#ifdef CONFIG_SAMSUNG_PM_DEBUG
-extern void printascii(const char *);
-
-void s3c_pm_dbg(const char *fmt, ...)
-{
-        va_list va;
-        char buff[256];
-
-        va_start(va, fmt);
-        vsnprintf(buff, sizeof(buff), fmt, va);
-        va_end(va);
-
-        printascii(buff);
-}
-
-static inline void s3c_pm_debug_init(void)
-{
-        /* restart uart clocks so we can use them to output */
-        s3c_pm_debug_init_uart();
-}
-
-#else
-#define s3c_pm_debug_init() do { } while(0)
-
-#endif /* CONFIG_SAMSUNG_PM_DEBUG */
-
-/* Save the UART configurations if we are configured for debug. */
-
-unsigned char pm_uart_udivslot;
-
-#ifdef CONFIG_SAMSUNG_PM_DEBUG
-
-static struct pm_uart_save uart_save;
-
-static void s3c_pm_save_uart(unsigned int uart, struct pm_uart_save *save)
-{
-        void __iomem *regs = S3C_VA_UARTx(uart);
-
-        save->ulcon = __raw_readl(regs + S3C2410_ULCON);
-        save->ucon = __raw_readl(regs + S3C2410_UCON);
-        save->ufcon = __raw_readl(regs + S3C2410_UFCON);
-        save->umcon = __raw_readl(regs + S3C2410_UMCON);
-        save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV);
-
-        if (pm_uart_udivslot)
-                save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT);
-
-        S3C_PMDBG("UART[%d]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n",
-                  uart, save->ulcon, save->ucon, save->ufcon, save->ubrdiv);
-}
-
-static void s3c_pm_save_uarts(void)
-{
-        s3c_pm_save_uart(CONFIG_DEBUG_S3C_UART, &uart_save);
-}
-
-static void s3c_pm_restore_uart(unsigned int uart, struct pm_uart_save *save)
-{
-        void __iomem *regs = S3C_VA_UARTx(uart);
-
-        s3c_pm_arch_update_uart(regs, save);
-
-        __raw_writel(save->ulcon, regs + S3C2410_ULCON);
-        __raw_writel(save->ucon,  regs + S3C2410_UCON);
-        __raw_writel(save->ufcon, regs + S3C2410_UFCON);
-        __raw_writel(save->umcon, regs + S3C2410_UMCON);
-        __raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV);
-
-        if (pm_uart_udivslot)
-                __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT);
-}
-
-static void s3c_pm_restore_uarts(void)
-{
-        s3c_pm_restore_uart(CONFIG_DEBUG_S3C_UART, &uart_save);
-}
-#else
-static void s3c_pm_save_uarts(void) { }
-static void s3c_pm_restore_uarts(void) { }
-#endif
-
 /* The IRQ ext-int code goes here, it is too small to currently bother
  * with its own file. */
 
@@ -153,62 +65,6 @@ int s3c_irqext_wake(struct irq_data *data, unsigned int state)
         return 0;
 }
 
-/* helper functions to save and restore register state */
-
-/**
- * s3c_pm_do_save() - save a set of registers for restoration on resume.
- * @ptr: Pointer to an array of registers.
- * @count: Size of the ptr array.
- *
- * Run through the list of registers given, saving their contents in the
- * array for later restoration when we wakeup.
- */
-void s3c_pm_do_save(struct sleep_save *ptr, int count)
-{
-        for (; count > 0; count--, ptr++) {
-                ptr->val = __raw_readl(ptr->reg);
-                S3C_PMDBG("saved %p value %08lx\n", ptr->reg, ptr->val);
-        }
-}
-
-/**
- * s3c_pm_do_restore() - restore register values from the save list.
- * @ptr: Pointer to an array of registers.
- * @count: Size of the ptr array.
- *
- * Restore the register values saved from s3c_pm_do_save().
- *
- * Note, we do not use S3C_PMDBG() in here, as the system may not have
- * restore the UARTs state yet
-*/
-
-void s3c_pm_do_restore(const struct sleep_save *ptr, int count)
-{
-        for (; count > 0; count--, ptr++) {
-                printk(KERN_DEBUG "restore %p (restore %08lx, was %08x)\n",
-                       ptr->reg, ptr->val, __raw_readl(ptr->reg));
-
-                __raw_writel(ptr->val, ptr->reg);
-        }
-}
-
-/**
- * s3c_pm_do_restore_core() - early restore register values from save list.
- *
- * This is similar to s3c_pm_do_restore() except we try and minimise the
- * side effects of the function in case registers that hardware might need
- * to work has been restored.
- *
- * WARNING: Do not put any debug in here that may effect memory or use
- * peripherals, as things may be changing!
-*/
-
-void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count)
-{
-        for (; count > 0; count--, ptr++)
-                __raw_writel(ptr->val, ptr->reg);
-}
-
 /* s3c2410_pm_show_resume_irqs
  *
  * print any IRQs asserted at resume time (ie, we woke from)
diff --git a/arch/arm/plat-samsung/s5p-sleep.S b/arch/arm/plat-samsung/s5p-sleep.S
index a030e7301da8..c5001659bdf8 100644
--- a/arch/arm/plat-samsung/s5p-sleep.S
+++ b/arch/arm/plat-samsung/s5p-sleep.S
@@ -23,18 +23,7 @@
 
 #include <linux/linkage.h>
 #include <asm/asm-offsets.h>
-#include <asm/hardware/cache-l2x0.h>
 
-#define CPU_MASK        0xff0ffff0
-#define CPU_CORTEX_A9   0x410fc090
-
-/*
- *       The following code is located into the .data section. This is to
- *       allow l2x0_regs_phys to be accessed with a relative load while we
- *       can't rely on any MMU translation. We could have put l2x0_regs_phys
- *       in the .text section as well, but some setups might insist on it to
- *       be truly read-only. (Reference from: arch/arm/kernel/sleep.S)
- */
         .data
         .align
 
@@ -53,37 +42,5 @@
          */
 
 ENTRY(s3c_cpu_resume)
-#ifdef CONFIG_CACHE_L2X0
-        mrc     p15, 0, r0, c0, c0, 0
-        ldr     r1, =CPU_MASK
-        and     r0, r0, r1
-        ldr     r1, =CPU_CORTEX_A9
-        cmp     r0, r1
-        bne     resume_l2on
-        adr     r0, l2x0_regs_phys
-        ldr     r0, [r0]
-        ldr     r1, [r0, #L2X0_R_PHY_BASE]
-        ldr     r2, [r1, #L2X0_CTRL]
-        tst     r2, #0x1
-        bne     resume_l2on
-        ldr     r2, [r0, #L2X0_R_AUX_CTRL]
-        str     r2, [r1, #L2X0_AUX_CTRL]
-        ldr     r2, [r0, #L2X0_R_TAG_LATENCY]
-        str     r2, [r1, #L2X0_TAG_LATENCY_CTRL]
-        ldr     r2, [r0, #L2X0_R_DATA_LATENCY]
-        str     r2, [r1, #L2X0_DATA_LATENCY_CTRL]
-        ldr     r2, [r0, #L2X0_R_PREFETCH_CTRL]
-        str     r2, [r1, #L2X0_PREFETCH_CTRL]
-        ldr     r2, [r0, #L2X0_R_PWR_CTRL]
-        str     r2, [r1, #L2X0_POWER_CTRL]
-        mov     r2, #1
-        str     r2, [r1, #L2X0_CTRL]
-resume_l2on:
-#endif
         b       cpu_resume
 ENDPROC(s3c_cpu_resume)
-#ifdef CONFIG_CACHE_L2X0
-        .globl l2x0_regs_phys
-l2x0_regs_phys:
-        .long   0
-#endif