#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>
-
-
-/*
- * Debug macros
- */
-#undef DEBUG
-
-#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
-#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
-
-#define RESTORE_GPLEVEL(n) do { \
- GPSR##n = sleep_save[SLEEP_SAVE_GPLR##n]; \
- GPCR##n = ~sleep_save[SLEEP_SAVE_GPLR##n]; \
-} while (0)
-
-/*
- * List of global PXA peripheral registers to preserve.
- * More ones like CP and general purpose register values are preserved
- * with the stack pointer in sleep.S.
- */
-enum { SLEEP_SAVE_START = 0,
-
- 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_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
-};
+#include <mach/pm.h>
+struct pxa_cpu_pm_fns *pxa_cpu_pm_fns;
+static unsigned long *sleep_save;
int pxa_pm_enter(suspend_state_t state)
{
- unsigned long sleep_save[SLEEP_SAVE_SIZE];
- unsigned long checksum = 0;
- struct timespec delta, rtc;
+ unsigned long sleep_save_checksum = 0, checksum = 0;
int i;
- extern void pxa_cpu_pm_enter(suspend_state_t state);
#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(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
+ /* skip registers saving for standby */
+ if (state != PM_SUSPEND_STANDBY) {
+ pxa_cpu_pm_fns->save(sleep_save);
+ /* before sleeping, calculate and save a checksum */
+ for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
+ sleep_save_checksum += sleep_save[i];
+ }
- SAVE(ICMR);
- ICMR = 0;
+ /* *** go zzz *** */
+ pxa_cpu_pm_fns->enter(state);
+ cpu_init();
- SAVE(CKEN);
- SAVE(PSTR);
+ if (state != PM_SUSPEND_STANDBY) {
+ /* after sleeping, validate the checksum */
+ for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
+ checksum += sleep_save[i];
- /* Note: wake up source are set up in each machine specific files */
+ /* if invalid, display message and wait for a hardware reset */
+ if (checksum != sleep_save_checksum) {
- /* clear GPIO transition detect bits */
- GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2;
-#ifdef CONFIG_PXA27x
- GEDR3 = GEDR3;
-#endif
+ lubbock_set_hexled(0xbadbadc5);
- /* Clear sleep reset status */
- RCSR = RCSR_SMR;
+ while (1)
+ pxa_cpu_pm_fns->enter(state);
+ }
+ pxa_cpu_pm_fns->restore(sleep_save);
+ }
- /* 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;
+ pr_debug("*** made it back from resume\n");
- /* *** go zzz *** */
- pxa_cpu_pm_enter(state);
+ return 0;
+}
- cpu_init();
+EXPORT_SYMBOL_GPL(pxa_pm_enter);
- /* after sleeping, validate the checksum */
- checksum = 0;
- for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
- checksum += sleep_save[i];
+unsigned long sleep_phys_sp(void *sp)
+{
+ return virt_to_phys(sp);
+}
- /* if invalid, display message and wait for a hardware reset */
- if (checksum != sleep_save[SLEEP_SAVE_CKSUM]) {
-#ifdef CONFIG_ARCH_LUBBOCK
- LUB_HEXLED = 0xbadbadc5;
-#endif
- while (1)
- pxa_cpu_pm_enter(state);
- }
+static int pxa_pm_valid(suspend_state_t state)
+{
+ if (pxa_cpu_pm_fns)
+ return pxa_cpu_pm_fns->valid(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(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
+ return -EINVAL;
+}
- PSSR = PSSR_RDH | PSSR_PH;
+static int pxa_pm_prepare(void)
+{
+ int ret = 0;
- RESTORE(CKEN);
+ if (pxa_cpu_pm_fns && pxa_cpu_pm_fns->prepare)
+ ret = pxa_cpu_pm_fns->prepare();
- ICLR = 0;
- ICCR = 1;
- RESTORE(ICMR);
+ return ret;
+}
- RESTORE(PSTR);
+static void pxa_pm_finish(void)
+{
+ if (pxa_cpu_pm_fns && pxa_cpu_pm_fns->finish)
+ pxa_cpu_pm_fns->finish();
+}
- /* restore current time */
- rtc.tv_sec = RCNR;
- restore_time_delta(&delta, &rtc);
+static struct platform_suspend_ops pxa_pm_ops = {
+ .valid = pxa_pm_valid,
+ .enter = pxa_pm_enter,
+ .prepare = pxa_pm_prepare,
+ .finish = pxa_pm_finish,
+};
-#ifdef DEBUG
- printk(KERN_DEBUG "*** made it back from resume\n");
-#endif
+static int __init pxa_pm_init(void)
+{
+ if (!pxa_cpu_pm_fns) {
+ printk(KERN_ERR "no valid pxa_cpu_pm_fns defined\n");
+ return -EINVAL;
+ }
+
+ sleep_save = kmalloc(pxa_cpu_pm_fns->save_count * sizeof(unsigned long),
+ GFP_KERNEL);
+ if (!sleep_save) {
+ printk(KERN_ERR "failed to alloc memory for pm save\n");
+ return -ENOMEM;
+ }
+ suspend_set_ops(&pxa_pm_ops);
return 0;
}
-EXPORT_SYMBOL_GPL(pxa_pm_enter);
-
-unsigned long sleep_phys_sp(void *sp)
-{
- return virt_to_phys(sp);
-}
+device_initcall(pxa_pm_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff