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Diffstat (limited to 'arch/arm/mach-s5pv210/pm.c')
-rw-r--r--arch/arm/mach-s5pv210/pm.c45
1 files changed, 43 insertions, 2 deletions
diff --git a/arch/arm/mach-s5pv210/pm.c b/arch/arm/mach-s5pv210/pm.c
index efdb5a27c060..d59c094cdea8 100644
--- a/arch/arm/mach-s5pv210/pm.c
+++ b/arch/arm/mach-s5pv210/pm.c
@@ -13,15 +13,56 @@
#include <linux/suspend.h>
#include <linux/syscore_ops.h>
#include <linux/io.h>
+#include <linux/soc/samsung/s3c-pm.h>
#include <asm/cacheflush.h>
#include <asm/suspend.h>
-#include <plat/pm-common.h>
-
#include "common.h"
#include "regs-clock.h"
+/* helper functions to save and restore register state */
+struct sleep_save {
+ void __iomem *reg;
+ unsigned long val;
+};
+
+#define SAVE_ITEM(x) \
+ { .reg = (x) }
+
+/**
+ * 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.
+ */
+static void s3c_pm_do_save(struct sleep_save *ptr, int count)
+{
+ for (; count > 0; count--, ptr++) {
+ ptr->val = readl_relaxed(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().
+ *
+ * WARNING: Do not put any debug in here that may effect memory or use
+ * peripherals, as things may be changing!
+*/
+
+static void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count)
+{
+ for (; count > 0; count--, ptr++)
+ writel_relaxed(ptr->val, ptr->reg);
+}
+
static struct sleep_save s5pv210_core_save[] = {
/* Clock ETC */
SAVE_ITEM(S5P_MDNIE_SEL),