1 files changed, 34 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos4/clock-exynos4212.c b/arch/arm/mach-exynos4/clock-exynos4212.c
index 5a47a3f0dfe4..77d5decb34fd 100644
--- a/arch/arm/mach-exynos4/clock-exynos4212.c
+++ b/arch/arm/mach-exynos4/clock-exynos4212.c
@@ -15,6 +15,7 @@
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/io.h>
+#include <linux/syscore_ops.h>
 
 #include <plat/cpu-freq.h>
 #include <plat/clock.h>
@@ -23,12 +24,20 @@
 #include <plat/s5p-clock.h>
 #include <plat/clock-clksrc.h>
 #include <plat/exynos4.h>
+#include <plat/pm.h>
 
 #include <mach/hardware.h>
 #include <mach/map.h>
 #include <mach/regs-clock.h>
 #include <mach/exynos4-clock.h>
 
+static struct sleep_save exynos4212_clock_save[] = {
+        SAVE_ITEM(S5P_CLKSRC_IMAGE),
+        SAVE_ITEM(S5P_CLKDIV_IMAGE),
+        SAVE_ITEM(S5P_CLKGATE_IP_IMAGE_4212),
+        SAVE_ITEM(S5P_CLKGATE_IP_PERIR_4212),
+};
+
 static struct clk *clk_src_mpll_user_list[] = {
         [0] = &clk_fin_mpll,
         [1] = &clk_mout_mpll.clk,
@@ -59,6 +68,29 @@ static struct clk init_clocks_off[] = {
         /* nothing here yet */
 };
 
+#ifdef CONFIG_PM_SLEEP
+static int exynos4212_clock_suspend(void)
+{
+        s3c_pm_do_save(exynos4212_clock_save, ARRAY_SIZE(exynos4212_clock_save));
+
+        return 0;
+}
+
+static void exynos4212_clock_resume(void)
+{
+        s3c_pm_do_restore_core(exynos4212_clock_save, ARRAY_SIZE(exynos4212_clock_save));
+}
+
+#else
+#define exynos4212_clock_suspend NULL
+#define exynos4212_clock_resume NULL
+#endif
+
+struct syscore_ops exynos4212_clock_syscore_ops = {
+        .suspend        = exynos4212_clock_suspend,
+        .resume         = exynos4212_clock_resume,
+};
+
 void __init exynos4212_register_clocks(void)
 {
         int ptr;
@@ -81,4 +113,6 @@ void __init exynos4212_register_clocks(void)
 
         s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
         s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+
+        register_syscore_ops(&exynos4212_clock_syscore_ops);
 }