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authorOlof Johansson <olof@lixom.net>2012-03-08 08:53:14 -0800
committerOlof Johansson <olof@lixom.net>2012-03-08 08:53:14 -0800
commitd60d506e6baaf423148c458df3ece0c1d440dce4 (patch)
treec25c44e70ebaaddcbe39559df5c5cd260e956be4 /arch/arm/mach-s3c24xx/pm-s3c2412.c
parent62f383435932ea3d271bee6b957de048452c1b16 (diff)
parent2e5ac9436645bb9fd2097868e228321f303c9c75 (diff)
downloadblackbird-obmc-linux-d60d506e6baaf423148c458df3ece0c1d440dce4.tar.gz
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Merge branch 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
* 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (24 commits) ARM: S3C24XX: remove call to s3c24xx_setup_clocks ARM: S3C24XX: add get_rate for clk_p on S3C2416/2443 ARM: S3C24XX: add get_rate for clk_h on S3C2416/2443 ARM: S3C24XX: remove XXX_setup_clocks method from S3C2443 ARM: S3C24XX: remove obsolete S3C2416_DMA option ARM: S3C24XX: Reuse S3C2443 dma for S3C2416 ARM: S3C24XX: Fix indentation of dma-s3c2443 ARM: S3C24XX: Move device setup files to mach directory ARM: S3C24XX: Consolidate Simtec extensions ARM: S3C24XX: move simtec-specific code to mach directory ARM: S3C24XX: Move common-smdk code to mach directory ARM: S3C24XX: Move s3c2443-clock.c to mach-s3c24xx ARM: s3c2410_defconfig: update s3c2410_defconfig ARM: S3C2443: move mach-s3c2443/* into mach-s3c24xx/ ARM: S3C2440: move mach-s3c2440/* into mach-s3c24xx/ ARM: S3C2416: move mach-s3c2416/* into mach-s3c24xx/ ARM: S3C2412: move mach-s3c2412/* into mach-s3c24xx/ ARM: S3C2410: move mach-s3c2410/* into mach-s3c24xx/ ARM: S3C24XX: change the ARCH_S3C2410 to ARCH_S3C24XX ARM: S3C2410: move s3c2410_baseclk_add to clock.h ...
Diffstat (limited to 'arch/arm/mach-s3c24xx/pm-s3c2412.c')
-rw-r--r--arch/arm/mach-s3c24xx/pm-s3c2412.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/pm-s3c2412.c b/arch/arm/mach-s3c24xx/pm-s3c2412.c
new file mode 100644
index 000000000000..d04588506ec4
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/pm-s3c2412.c
@@ -0,0 +1,124 @@
+/* linux/arch/arm/mach-s3c2412/pm.c
+ *
+ * Copyright (c) 2006 Simtec Electronics
+ * Ben Dooks <ben@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.
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/syscore_ops.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+
+#include <mach/regs-power.h>
+#include <mach/regs-gpioj.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-dsc.h>
+
+#include <plat/cpu.h>
+#include <plat/pm.h>
+
+#include <plat/s3c2412.h>
+
+extern void s3c2412_sleep_enter(void);
+
+static int s3c2412_cpu_suspend(unsigned long arg)
+{
+ unsigned long tmp;
+
+ /* set our standby method to sleep */
+
+ tmp = __raw_readl(S3C2412_PWRCFG);
+ tmp |= S3C2412_PWRCFG_STANDBYWFI_SLEEP;
+ __raw_writel(tmp, S3C2412_PWRCFG);
+
+ s3c2412_sleep_enter();
+
+ panic("sleep resumed to originator?");
+}
+
+static void s3c2412_pm_prepare(void)
+{
+}
+
+static int s3c2412_pm_add(struct device *dev, struct subsys_interface *sif)
+{
+ pm_cpu_prep = s3c2412_pm_prepare;
+ pm_cpu_sleep = s3c2412_cpu_suspend;
+
+ return 0;
+}
+
+static struct sleep_save s3c2412_sleep[] = {
+ SAVE_ITEM(S3C2412_DSC0),
+ SAVE_ITEM(S3C2412_DSC1),
+ SAVE_ITEM(S3C2413_GPJDAT),
+ SAVE_ITEM(S3C2413_GPJCON),
+ SAVE_ITEM(S3C2413_GPJUP),
+
+ /* save the PWRCFG to get back to original sleep method */
+
+ SAVE_ITEM(S3C2412_PWRCFG),
+
+ /* save the sleep configuration anyway, just in case these
+ * get damaged during wakeup */
+
+ SAVE_ITEM(S3C2412_GPBSLPCON),
+ SAVE_ITEM(S3C2412_GPCSLPCON),
+ SAVE_ITEM(S3C2412_GPDSLPCON),
+ SAVE_ITEM(S3C2412_GPFSLPCON),
+ SAVE_ITEM(S3C2412_GPGSLPCON),
+ SAVE_ITEM(S3C2412_GPHSLPCON),
+ SAVE_ITEM(S3C2413_GPJSLPCON),
+};
+
+static struct subsys_interface s3c2412_pm_interface = {
+ .name = "s3c2412_pm",
+ .subsys = &s3c2412_subsys,
+ .add_dev = s3c2412_pm_add,
+};
+
+static __init int s3c2412_pm_init(void)
+{
+ return subsys_interface_register(&s3c2412_pm_interface);
+}
+
+arch_initcall(s3c2412_pm_init);
+
+static int s3c2412_pm_suspend(void)
+{
+ s3c_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
+ return 0;
+}
+
+static void s3c2412_pm_resume(void)
+{
+ unsigned long tmp;
+
+ tmp = __raw_readl(S3C2412_PWRCFG);
+ tmp &= ~S3C2412_PWRCFG_STANDBYWFI_MASK;
+ tmp |= S3C2412_PWRCFG_STANDBYWFI_IDLE;
+ __raw_writel(tmp, S3C2412_PWRCFG);
+
+ s3c_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
+}
+
+struct syscore_ops s3c2412_pm_syscore_ops = {
+ .suspend = s3c2412_pm_suspend,
+ .resume = s3c2412_pm_resume,
+};
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