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authormerge <null@invalid>2008-12-03 11:37:28 +0000
committerAndy Green <agreen@pads.home.warmcat.com>2008-12-03 11:37:28 +0000
commit67c492d7bcbd1009775e85a4d7ecb5a651006427 (patch)
tree8ccf05c50865e213521a9563c852909349940e5b /arch/arm/plat-s3c
parenta89e2b587bb0b3dc37648a546399798c7a82757b (diff)
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-repair-broken-include-patch-1228304201
pending-tracking-hist top was MERGE-via-stable-tracking-repair-broken-include-patch-1228304201 / 63bf64cf29947936235ade35a4faf33dc8919b68 ... parent commitmessage: From: merge <null@invalid> MERGE-via-stable-tracking-hist-repair-broken-include-patch stable-tracking-hist top was repair-broken-include-patch / aab327f537d98b0bd48be4b7f61811f9b60ddd02 ... parent commitmessage: From: Andy Green <andy@openmoko.com> repair-broken-include.patch Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'arch/arm/plat-s3c')
-rw-r--r--arch/arm/plat-s3c/include/plat/pm.h122
1 files changed, 114 insertions, 8 deletions
diff --git a/arch/arm/plat-s3c/include/plat/pm.h b/arch/arm/plat-s3c/include/plat/pm.h
index c384d02d4cf..9b9a88592ee 100644
--- a/arch/arm/plat-s3c/include/plat/pm.h
+++ b/arch/arm/plat-s3c/include/plat/pm.h
@@ -1,6 +1,7 @@
/* linux/include/asm-arm/plat-s3c24xx/pm.h
*
* Copyright (c) 2004 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
* Written by Ben Dooks, <ben@simtec.co.uk>
*
* This program is free software; you can redistribute it and/or modify
@@ -10,7 +11,7 @@
#include <linux/sysdev.h>
-/* s3c2410_pm_init
+/* s3c_pm_init
*
* called from board at initialisation time to setup the power
* management
@@ -18,11 +19,11 @@
#ifdef CONFIG_PM
-extern __init int s3c2410_pm_init(void);
+extern __init int s3c_pm_init(void);
#else
-static inline int s3c2410_pm_init(void)
+static inline int s3c_pm_init(void)
{
return 0;
}
@@ -45,16 +46,27 @@ extern void (*pm_cpu_sleep)(void);
extern unsigned long s3c_pm_flags;
+extern unsigned char pm_uart_udivslot; /* true to save UART UDIVSLOT */
+
/* from sleep.S */
-extern int s3c2410_cpu_save(unsigned long *saveblk);
+extern int s3c_cpu_save(unsigned long *saveblk);
+extern void s3c_cpu_resume(void);
+
extern void s3c2410_cpu_suspend(void);
-extern void s3c2410_cpu_resume(void);
-extern unsigned long s3c2410_sleep_save_phys;
+extern unsigned long s3c_sleep_save_phys;
/* sleep save info */
+/**
+ * struct sleep_save - save information for shared peripherals.
+ * @reg: Pointer to the register to save.
+ * @val: Holder for the value saved from reg.
+ *
+ * This describes a list of registers which is used by the pm core and
+ * other subsystem to save and restore register values over suspend.
+ */
struct sleep_save {
void __iomem *reg;
unsigned long val;
@@ -63,13 +75,107 @@ struct sleep_save {
#define SAVE_ITEM(x) \
{ .reg = (x) }
-extern void s3c2410_pm_do_save(struct sleep_save *ptr, int count);
-extern void s3c2410_pm_do_restore(struct sleep_save *ptr, int count);
+/**
+ * struct pm_uart_save - save block for core UART
+ * @ulcon: Save value for S3C2410_ULCON
+ * @ucon: Save value for S3C2410_UCON
+ * @ufcon: Save value for S3C2410_UFCON
+ * @umcon: Save value for S3C2410_UMCON
+ * @ubrdiv: Save value for S3C2410_UBRDIV
+ *
+ * Save block for UART registers to be held over sleep and restored if they
+ * are needed (say by debug).
+*/
+struct pm_uart_save {
+ u32 ulcon;
+ u32 ucon;
+ u32 ufcon;
+ u32 umcon;
+ u32 ubrdiv;
+ u32 udivslot;
+};
+
+/* helper functions to save/restore lists of registers. */
+
+extern void s3c_pm_do_save(struct sleep_save *ptr, int count);
+extern void s3c_pm_do_restore(struct sleep_save *ptr, int count);
+extern void s3c_pm_do_restore_core(struct sleep_save *ptr, int count);
#ifdef CONFIG_PM
+extern int s3c_irqext_wake(unsigned int irqno, unsigned int state);
extern int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state);
extern int s3c24xx_irq_resume(struct sys_device *dev);
#else
+#define s3c_irqext_wake NULL
#define s3c24xx_irq_suspend NULL
#define s3c24xx_irq_resume NULL
#endif
+
+/* PM debug functions */
+
+#ifdef CONFIG_S3C2410_PM_DEBUG
+/**
+ * s3c_pm_dbg() - low level debug function for use in suspend/resume.
+ * @msg: The message to print.
+ *
+ * This function is used mainly to debug the resume process before the system
+ * can rely on printk/console output. It uses the low-level debugging output
+ * routine printascii() to do its work.
+ */
+extern void s3c_pm_dbg(const char *msg, ...);
+
+#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt)
+#else
+#define S3C_PMDBG(fmt...) printk(KERN_DEBUG fmt)
+#endif
+
+#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
+/**
+ * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs
+ * @set: set bits for the state of the LEDs
+ * @clear: clear bits for the state of the LEDs.
+ */
+extern void s3c_pm_debug_smdkled(u32 set, u32 clear);
+
+#else
+static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { }
+#endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */
+
+/* suspend memory checking */
+
+#ifdef CONFIG_S3C2410_PM_CHECK
+extern void s3c_pm_check_prepare(void);
+extern void s3c_pm_check_restore(void);
+extern void s3c_pm_check_store(void);
+#else
+#define s3c_pm_check_prepare() do { } while(0)
+#define s3c_pm_check_restore() do { } while(0)
+#define s3c_pm_check_store() do { } while(0)
+#endif
+
+/**
+ * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ
+ *
+ * Setup all the necessary GPIO pins for waking the system on external
+ * interrupt.
+ */
+extern void s3c_pm_configure_extint(void);
+
+/**
+ * s3c_pm_restore_gpios() - restore the state of the gpios after sleep.
+ *
+ * Restore the state of the GPIO pins after sleep, which may involve ensuring
+ * that we do not glitch the state of the pins from that the bootloader's
+ * resume code has done.
+*/
+extern void s3c_pm_restore_gpios(void);
+
+/**
+ * s3c_pm_save_gpios() - save the state of the GPIOs for restoring after sleep.
+ *
+ * Save the GPIO states for resotration on resume. See s3c_pm_restore_gpios().
+ */
+extern void s3c_pm_save_gpios(void);
+
+extern void s3c_pm_save_core(void);
+extern void s3c_pm_restore_core(void);