*/
#include <linux/config.h>
#include <linux/init.h>
+#include <linux/module.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <asm/hardware.h>
#include <asm/memory.h>
#include <asm/system.h>
+#include <asm/arch/pm.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/lubbock.h>
#include <asm/mach/time.h>
*/
#undef DEBUG
-extern void pxa_cpu_suspend(void);
-extern void pxa_cpu_resume(void);
-
#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
*/
enum { SLEEP_SAVE_START = 0,
- SLEEP_SAVE_OIER,
- SLEEP_SAVE_OSMR0, SLEEP_SAVE_OSMR1, SLEEP_SAVE_OSMR2, SLEEP_SAVE_OSMR3,
+ SLEEP_SAVE_GPLR0, SLEEP_SAVE_GPLR1, SLEEP_SAVE_GPLR2, SLEEP_SAVE_GPLR3,
+ SLEEP_SAVE_GPDR0, SLEEP_SAVE_GPDR1, SLEEP_SAVE_GPDR2, SLEEP_SAVE_GPDR3,
+ SLEEP_SAVE_GRER0, SLEEP_SAVE_GRER1, SLEEP_SAVE_GRER2, SLEEP_SAVE_GRER3,
+ SLEEP_SAVE_GFER0, SLEEP_SAVE_GFER1, SLEEP_SAVE_GFER2, SLEEP_SAVE_GFER3,
+ SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2, SLEEP_SAVE_PGSR3,
+
+ SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U,
+ SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U,
+ SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U,
+ SLEEP_SAVE_GAFR3_L, SLEEP_SAVE_GAFR3_U,
- SLEEP_SAVE_GPLR0, SLEEP_SAVE_GPLR1, SLEEP_SAVE_GPLR2,
- SLEEP_SAVE_GPDR0, SLEEP_SAVE_GPDR1, SLEEP_SAVE_GPDR2,
- SLEEP_SAVE_GRER0, SLEEP_SAVE_GRER1, SLEEP_SAVE_GRER2,
- SLEEP_SAVE_GFER0, SLEEP_SAVE_GFER1, SLEEP_SAVE_GFER2,
- SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR2_L,
- SLEEP_SAVE_GAFR0_U, SLEEP_SAVE_GAFR1_U, SLEEP_SAVE_GAFR2_U,
+ SLEEP_SAVE_PSTR,
SLEEP_SAVE_ICMR,
SLEEP_SAVE_CKEN,
+#ifdef CONFIG_PXA27x
+ SLEEP_SAVE_MDREFR,
+ SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER,
+ SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR,
+#endif
+
SLEEP_SAVE_CKSUM,
SLEEP_SAVE_SIZE
};
-static int pxa_pm_enter(u32 state)
+int pxa_pm_enter(suspend_state_t state)
{
unsigned long sleep_save[SLEEP_SAVE_SIZE];
unsigned long checksum = 0;
struct timespec delta, rtc;
int i;
+ extern void pxa_cpu_pm_enter(suspend_state_t state);
- if (state != PM_SUSPEND_MEM)
- return -EINVAL;
+#ifdef CONFIG_IWMMXT
+ /* force any iWMMXt context to ram **/
+ iwmmxt_task_disable(NULL);
+#endif
/* preserve current time */
rtc.tv_sec = RCNR;
rtc.tv_nsec = 0;
save_time_delta(&delta, &rtc);
- /* save vital registers */
- SAVE(OSMR0);
- SAVE(OSMR1);
- SAVE(OSMR2);
- SAVE(OSMR3);
- SAVE(OIER);
-
SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2);
SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2);
SAVE(GRER0); SAVE(GRER1); SAVE(GRER2);
SAVE(GFER0); SAVE(GFER1); SAVE(GFER2);
+ SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2);
+
SAVE(GAFR0_L); SAVE(GAFR0_U);
SAVE(GAFR1_L); SAVE(GAFR1_U);
SAVE(GAFR2_L); SAVE(GAFR2_U);
+#ifdef CONFIG_PXA27x
+ SAVE(MDREFR);
+ SAVE(GPLR3); SAVE(GPDR3); SAVE(GRER3); SAVE(GFER3); SAVE(PGSR3);
+ SAVE(GAFR3_L); SAVE(GAFR3_U);
+ SAVE(PWER); SAVE(PCFR); SAVE(PRER);
+ SAVE(PFER); SAVE(PKWR);
+#endif
+
SAVE(ICMR);
ICMR = 0;
SAVE(CKEN);
- CKEN = 0;
+ SAVE(PSTR);
/* Note: wake up source are set up in each machine specific files */
/* clear GPIO transition detect bits */
GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2;
+#ifdef CONFIG_PXA27x
+ GEDR3 = GEDR3;
+#endif
/* Clear sleep reset status */
RCSR = RCSR_SMR;
- /* set resume return address */
- PSPR = virt_to_phys(pxa_cpu_resume);
-
/* before sleeping, calculate and save a checksum */
for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
checksum += sleep_save[i];
sleep_save[SLEEP_SAVE_CKSUM] = checksum;
/* *** go zzz *** */
- pxa_cpu_suspend();
+ pxa_cpu_pm_enter(state);
+
+ cpu_init();
/* after sleeping, validate the checksum */
checksum = 0;
#ifdef CONFIG_ARCH_LUBBOCK
LUB_HEXLED = 0xbadbadc5;
#endif
- while (1);
+ while (1)
+ pxa_cpu_pm_enter(state);
}
/* ensure not to come back here if it wasn't intended */
PSPR = 0;
/* restore registers */
+ RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
+ RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
RESTORE(GAFR0_L); RESTORE(GAFR0_U);
RESTORE(GAFR1_L); RESTORE(GAFR1_U);
RESTORE(GAFR2_L); RESTORE(GAFR2_U);
- RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
- RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2);
RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2);
+ RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);
+
+#ifdef CONFIG_PXA27x
+ RESTORE(MDREFR);
+ RESTORE_GPLEVEL(3); RESTORE(GPDR3);
+ RESTORE(GAFR3_L); RESTORE(GAFR3_U);
+ RESTORE(GRER3); RESTORE(GFER3); RESTORE(PGSR3);
+ RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
+ RESTORE(PFER); RESTORE(PKWR);
+#endif
PSSR = PSSR_RDH | PSSR_PH;
- RESTORE(OSMR0);
- RESTORE(OSMR1);
- RESTORE(OSMR2);
- RESTORE(OSMR3);
- RESTORE(OIER);
-
- /* OSMR0 is the system timer: make sure OSCR is sufficiently behind */
- OSCR = OSMR0 - LATCH;
-
RESTORE(CKEN);
ICLR = 0;
ICCR = 1;
RESTORE(ICMR);
+ RESTORE(PSTR);
+
/* restore current time */
rtc.tv_sec = RCNR;
restore_time_delta(&delta, &rtc);
return 0;
}
+EXPORT_SYMBOL_GPL(pxa_pm_enter);
+
unsigned long sleep_phys_sp(void *sp)
{
return virt_to_phys(sp);
/*
* Called after processes are frozen, but before we shut down devices.
*/
-static int pxa_pm_prepare(u32 state)
+int pxa_pm_prepare(suspend_state_t state)
{
- return 0;
+ extern int pxa_cpu_pm_prepare(suspend_state_t state);
+
+ return pxa_cpu_pm_prepare(state);
}
+EXPORT_SYMBOL_GPL(pxa_pm_prepare);
+
/*
* Called after devices are re-setup, but before processes are thawed.
*/
-static int pxa_pm_finish(u32 state)
+int pxa_pm_finish(suspend_state_t state)
{
return 0;
}
+EXPORT_SYMBOL_GPL(pxa_pm_finish);
+
/*
* Set to PM_DISK_FIRMWARE so we can quickly veto suspend-to-disk.
*/
return 0;
}
-late_initcall(pxa_pm_init);
+device_initcall(pxa_pm_init);