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authorKukjin Kim <kgene.kim@samsung.com>2012-02-06 02:59:47 +0100
committerKukjin Kim <kgene.kim@samsung.com>2012-03-03 00:55:12 +0100
commit26febf8ef14a3682eb99af3805c1f8149ed8eb6c (patch)
treef6206e4ac98c76f04dc7cc290e99056bfbfe3264 /arch/arm/mach-s3c24xx/pm-s3c2416.c
parentARM: S3C2412: move mach-s3c2412/* into mach-s3c24xx/ (diff)
downloadlinux-26febf8ef14a3682eb99af3805c1f8149ed8eb6c.tar.xz
linux-26febf8ef14a3682eb99af3805c1f8149ed8eb6c.zip
ARM: S3C2416: move mach-s3c2416/* into mach-s3c24xx/
This patch moves S3C2416 stuff into mach-s3c24xx/ directory so that we can merge the s3c24 series' directories to the just one mach-s3c24xx/ directory. Cc: Ben Dooks <ben-linux@fluff.org> Tested-by: Heiko Stuebner <heiko@sntech.de> [kgene.kim@samsung.com: removed compiling s3c2416 as per Heiko's suggestion] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s3c24xx/pm-s3c2416.c')
-rw-r--r--arch/arm/mach-s3c24xx/pm-s3c2416.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/pm-s3c2416.c b/arch/arm/mach-s3c24xx/pm-s3c2416.c
new file mode 100644
index 000000000000..3bdb15a0d419
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/pm-s3c2416.c
@@ -0,0 +1,83 @@
+/* linux/arch/arm/mach-s3c2416/pm.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * S3C2416 - PM support (Based on Ben Dooks' S3C2412 PM 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/device.h>
+#include <linux/syscore_ops.h>
+#include <linux/io.h>
+
+#include <asm/cacheflush.h>
+
+#include <mach/regs-power.h>
+#include <mach/regs-s3c2443-clock.h>
+
+#include <plat/cpu.h>
+#include <plat/pm.h>
+
+extern void s3c2412_sleep_enter(void);
+
+static int s3c2416_cpu_suspend(unsigned long arg)
+{
+ /* enable wakeup sources regardless of battery state */
+ __raw_writel(S3C2443_PWRCFG_SLEEP, S3C2443_PWRCFG);
+
+ /* set the mode as sleep, 2BED represents "Go to BED" */
+ __raw_writel(0x2BED, S3C2443_PWRMODE);
+
+ s3c2412_sleep_enter();
+
+ panic("sleep resumed to originator?");
+}
+
+static void s3c2416_pm_prepare(void)
+{
+ /*
+ * write the magic value u-boot uses to check for resume into
+ * the INFORM0 register, and ensure INFORM1 is set to the
+ * correct address to resume from.
+ */
+ __raw_writel(0x2BED, S3C2412_INFORM0);
+ __raw_writel(virt_to_phys(s3c_cpu_resume), S3C2412_INFORM1);
+}
+
+static int s3c2416_pm_add(struct device *dev)
+{
+ pm_cpu_prep = s3c2416_pm_prepare;
+ pm_cpu_sleep = s3c2416_cpu_suspend;
+
+ return 0;
+}
+
+static struct subsys_interface s3c2416_pm_interface = {
+ .name = "s3c2416_pm",
+ .subsys = &s3c2416_subsys,
+ .add_dev = s3c2416_pm_add,
+};
+
+static __init int s3c2416_pm_init(void)
+{
+ return subsys_interface_register(&s3c2416_pm_interface);
+}
+
+arch_initcall(s3c2416_pm_init);
+
+
+static void s3c2416_pm_resume(void)
+{
+ /* unset the return-from-sleep amd inform flags */
+ __raw_writel(0x0, S3C2443_PWRMODE);
+ __raw_writel(0x0, S3C2412_INFORM0);
+ __raw_writel(0x0, S3C2412_INFORM1);
+}
+
+struct syscore_ops s3c2416_pm_syscore_ops = {
+ .resume = s3c2416_pm_resume,
+};