2 files changed, 63 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/s3c2412.c b/arch/arm/mach-s3c2410/s3c2412.c
index e24ffd5e478b..2d163f7600be 100644
--- a/arch/arm/mach-s3c2410/s3c2412.c
+++ b/arch/arm/mach-s3c2410/s3c2412.c
@@ -35,11 +35,15 @@
 #include <asm/mach/irq.h>
 
 #include <asm/hardware.h>
+#include <asm/proc-fns.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 
+#include <asm/arch/idle.h>
+
 #include <asm/arch/regs-clock.h>
 #include <asm/arch/regs-serial.h>
+#include <asm/arch/regs-power.h>
 #include <asm/arch/regs-gpio.h>
 #include <asm/arch/regs-gpioj.h>
 #include <asm/arch/regs-dsc.h>
@@ -75,6 +79,27 @@ void __init s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no)
         s3c_device_nand.name = "s3c2412-nand";
 }
 
+/* s3c2412_idle
+ *
+ * use the standard idle call by ensuring the idle mode
+ * in power config, then issuing the idle co-processor
+ * instruction
+*/
+
+static void s3c2412_idle(void)
+{
+        unsigned long tmp;
+
+        /* ensure our idle mode is to go to idle */
+
+        tmp = __raw_readl(S3C2412_PWRCFG);
+        tmp &= ~S3C2412_PWRCFG_STANDBYWFI_MASK;
+        tmp |= S3C2412_PWRCFG_STANDBYWFI_IDLE;
+        __raw_writel(tmp, S3C2412_PWRCFG);
+
+        cpu_do_idle();
+}
+
 /* s3c2412_map_io
  *
  * register the standard cpu IO areas, and any passed in from the
@@ -87,6 +112,10 @@ void __init s3c2412_map_io(struct map_desc *mach_desc, int mach_size)
 
         s3c24xx_va_gpio2 = S3C24XX_VA_GPIO + 0x10;
 
+        /* set our idle function */
+
+        s3c24xx_idle = s3c2412_idle;
+
         /* register our io-tables */
 
         iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc));
diff --git a/include/asm-arm/arch-s3c2410/regs-power.h b/include/asm-arm/arch-s3c2410/regs-power.h
new file mode 100644
index 000000000000..6c319ea2afac
--- /dev/null
+++ b/include/asm-arm/arch-s3c2410/regs-power.h
@@ -0,0 +1,34 @@
+/* linux/include/asm/arch-s3c2410/regs-power.h
+ *
+ * Copyright (c) 2003,2004,2005,2006 Simtec Electronics <linux@simtec.co.uk>
+ *                    http://armlinux.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.
+ *
+ * S3C24XX power control register definitions
+*/
+
+#ifndef __ASM_ARM_REGS_PWR
+#define __ASM_ARM_REGS_PWR __FILE__
+
+#define S3C24XX_PWRREG(x) ((x) + S3C24XX_VA_CLKPWR)
+
+#define S3C2412_PWRMODECON      S3C24XX_PWRREG(0x20)
+#define S3C2412_PWRCFG          S3C24XX_PWRREG(0x24)
+
+#define S3C2412_PWRCFG_BATF_IGNORE              (0<<0)
+#define S3C2412_PWRCFG_BATF_SLEEP               (3<<0)
+#define S3C2412_PWRCFG_BATF_MASK                (3<<0)
+
+#define S3C2412_PWRCFG_STANDBYWFI_IGNORE        (0<<6)
+#define S3C2412_PWRCFG_STANDBYWFI_IDLE          (1<<6)
+#define S3C2412_PWRCFG_STANDBYWFI_STOP          (2<<6)
+#define S3C2412_PWRCFG_STANDBYWFI_SLEEP         (3<<6)
+#define S3C2412_PWRCFG_STANDBYWFI_MASK          (3<<6)
+
+#define S3C2412_PWRCFG_RTC_MASKIRQ              (1<<8)
+#define S3C2412_PWRCFG_NAND_NORST               (1<<9)
+
+#endif /* __ASM_ARM_REGS_PWR */