aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/mach-pxa/pm.c169
-rw-r--r--arch/arm/mach-pxa/pxa25x.c84
-rw-r--r--arch/arm/mach-pxa/pxa27x.c117
-rw-r--r--include/asm-arm/arch-pxa/pm.h11
4 files changed, 244 insertions, 137 deletions
diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
index e66dbc26add1..b59a81a8e7d3 100644
--- a/arch/arm/mach-pxa/pm.c
+++ b/arch/arm/mach-pxa/pm.c
@@ -24,61 +24,13 @@
#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
-};
-
+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;
+ 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 **/
@@ -86,100 +38,35 @@ int pxa_pm_enter(suspend_state_t state)
iwmmxt_task_disable(NULL);
#endif
- 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);
- 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
+ pxa_cpu_pm_fns->save(sleep_save);
/* Clear sleep reset status */
RCSR = RCSR_SMR;
/* 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;
+ for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
+ sleep_save_checksum += sleep_save[i];
/* *** go zzz *** */
- pxa_cpu_pm_enter(state);
-
+ pxa_cpu_pm_fns->enter(state);
cpu_init();
/* after sleeping, validate the checksum */
- checksum = 0;
- for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
+ for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
checksum += sleep_save[i];
/* if invalid, display message and wait for a hardware reset */
- if (checksum != sleep_save[SLEEP_SAVE_CKSUM]) {
+ if (checksum != sleep_save_checksum) {
#ifdef CONFIG_ARCH_LUBBOCK
LUB_HEXLED = 0xbadbadc5;
#endif
while (1)
- pxa_cpu_pm_enter(state);
+ pxa_cpu_pm_fns->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(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(CKEN);
-
- ICLR = 0;
- ICCR = 1;
- RESTORE(ICMR);
+ pxa_cpu_pm_fns->restore(sleep_save);
- RESTORE(PSTR);
-
-#ifdef DEBUG
- printk(KERN_DEBUG "*** made it back from resume\n");
-#endif
+ pr_debug("*** made it back from resume\n");
return 0;
}
@@ -190,3 +77,35 @@ unsigned long sleep_phys_sp(void *sp)
{
return virt_to_phys(sp);
}
+
+static int pxa_pm_valid(suspend_state_t state)
+{
+ if (pxa_cpu_pm_fns)
+ return pxa_cpu_pm_fns->valid(state);
+
+ return -EINVAL;
+}
+
+static struct pm_ops pxa_pm_ops = {
+ .valid = pxa_pm_valid,
+ .enter = pxa_pm_enter,
+};
+
+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_size, GFP_KERNEL);
+ if (!sleep_save) {
+ printk(KERN_ERR "failed to alloc memory for pm save\n");
+ return -ENOMEM;
+ }
+
+ pm_set_ops(&pxa_pm_ops);
+ return 0;
+}
+
+device_initcall(pxa_pm_init);
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index 9d9422e2f75c..1ec4bf1ff249 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -110,7 +110,75 @@ EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
#ifdef CONFIG_PM
-void pxa_cpu_pm_enter(suspend_state_t state)
+#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_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_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2,
+
+ 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_PSTR,
+
+ SLEEP_SAVE_ICMR,
+ SLEEP_SAVE_CKEN,
+
+ SLEEP_SAVE_SIZE
+};
+
+
+static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
+{
+ 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);
+
+ SAVE(ICMR);
+ SAVE(CKEN);
+ SAVE(PSTR);
+}
+
+static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
+{
+ /* 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);
+
+ RESTORE(CKEN);
+ RESTORE(ICMR);
+ RESTORE(PSTR);
+}
+
+static void pxa25x_cpu_pm_enter(suspend_state_t state)
{
extern void pxa_cpu_suspend(unsigned int);
extern void pxa_cpu_resume(void);
@@ -126,10 +194,18 @@ void pxa_cpu_pm_enter(suspend_state_t state)
}
}
-static struct pm_ops pxa25x_pm_ops = {
- .enter = pxa_pm_enter,
+static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
+ .save_size = SLEEP_SAVE_SIZE,
.valid = pm_valid_only_mem,
+ .save = pxa25x_cpu_pm_save,
+ .restore = pxa25x_cpu_pm_restore,
+ .enter = pxa25x_cpu_pm_enter,
};
+
+static void __init pxa25x_init_pm(void)
+{
+ pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns;
+}
#endif
void __init pxa25x_init_irq(void)
@@ -159,7 +235,7 @@ static int __init pxa25x_init(void)
if ((ret = pxa_init_dma(16)))
return ret;
#ifdef CONFIG_PM
- pm_set_ops(&pxa25x_pm_ops);
+ pxa25x_init_pm();
#endif
ret = platform_add_devices(pxa25x_devices,
ARRAY_SIZE(pxa25x_devices));
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index c85f0b01c326..9240d37e23fa 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -126,14 +126,109 @@ EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
#ifdef CONFIG_PM
-void pxa_cpu_pm_enter(suspend_state_t state)
+#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,
+
+ SLEEP_SAVE_MDREFR,
+ SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER,
+ SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR,
+
+ SLEEP_SAVE_SIZE
+};
+
+void pxa27x_cpu_pm_save(unsigned long *sleep_save)
+{
+ SAVE(GPLR0); SAVE(GPLR1); SAVE(GPLR2); SAVE(GPLR3);
+ SAVE(GPDR0); SAVE(GPDR1); SAVE(GPDR2); SAVE(GPDR3);
+ SAVE(GRER0); SAVE(GRER1); SAVE(GRER2); SAVE(GRER3);
+ SAVE(GFER0); SAVE(GFER1); SAVE(GFER2); SAVE(GFER3);
+ SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2); SAVE(PGSR3);
+
+ SAVE(GAFR0_L); SAVE(GAFR0_U);
+ SAVE(GAFR1_L); SAVE(GAFR1_U);
+ SAVE(GAFR2_L); SAVE(GAFR2_U);
+ SAVE(GAFR3_L); SAVE(GAFR3_U);
+
+ SAVE(MDREFR);
+ SAVE(PWER); SAVE(PCFR); SAVE(PRER);
+ SAVE(PFER); SAVE(PKWR);
+
+ SAVE(ICMR); ICMR = 0;
+ SAVE(CKEN);
+ SAVE(PSTR);
+
+ /* Clear GPIO transition detect bits */
+ GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2; GEDR3 = GEDR3;
+}
+
+void pxa27x_cpu_pm_restore(unsigned long *sleep_save)
+{
+ /* 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_GPLEVEL(3);
+ RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2); RESTORE(GPDR3);
+ RESTORE(GAFR0_L); RESTORE(GAFR0_U);
+ RESTORE(GAFR1_L); RESTORE(GAFR1_U);
+ RESTORE(GAFR2_L); RESTORE(GAFR2_U);
+ RESTORE(GAFR3_L); RESTORE(GAFR3_U);
+ RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2); RESTORE(GRER3);
+ RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2); RESTORE(GFER3);
+ RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2); RESTORE(PGSR3);
+
+ RESTORE(MDREFR);
+ RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
+ RESTORE(PFER); RESTORE(PKWR);
+
+ PSSR = PSSR_RDH | PSSR_PH;
+
+ RESTORE(CKEN);
+
+ ICLR = 0;
+ ICCR = 1;
+ RESTORE(ICMR);
+ RESTORE(PSTR);
+}
+
+void pxa27x_cpu_pm_enter(suspend_state_t state)
{
extern void pxa_cpu_standby(void);
extern void pxa_cpu_suspend(unsigned int);
extern void pxa_cpu_resume(void);
if (state == PM_SUSPEND_STANDBY)
- CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER) | (1 << CKEN_LCD) | (1 << CKEN_PWM0);
+ CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER) |
+ (1 << CKEN_LCD) | (1 << CKEN_PWM0);
else
CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER);
@@ -155,15 +250,23 @@ void pxa_cpu_pm_enter(suspend_state_t state)
}
}
-static int pxa27x_pm_valid(suspend_state_t state)
+static int pxa27x_cpu_pm_valid(suspend_state_t state)
{
return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY;
}
-static struct pm_ops pxa27x_pm_ops = {
- .enter = pxa_pm_enter,
- .valid = pxa27x_pm_valid,
+static struct pxa_cpu_pm_fns pxa27x_cpu_pm_fns = {
+ .save_size = SLEEP_SAVE_SIZE,
+ .save = pxa27x_cpu_pm_save,
+ .restore = pxa27x_cpu_pm_restore,
+ .valid = pxa27x_cpu_pm_valid,
+ .enter = pxa27x_cpu_pm_enter,
};
+
+static void __init pxa27x_init_pm(void)
+{
+ pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns;
+}
#endif
/*
@@ -249,7 +352,7 @@ static int __init pxa27x_init(void)
if ((ret = pxa_init_dma(32)))
return ret;
#ifdef CONFIG_PM
- pm_set_ops(&pxa27x_pm_ops);
+ pxa27x_init_pm();
#endif
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
}
diff --git a/include/asm-arm/arch-pxa/pm.h b/include/asm-arm/arch-pxa/pm.h
index 52243a62c4e7..62b69004819d 100644
--- a/include/asm-arm/arch-pxa/pm.h
+++ b/include/asm-arm/arch-pxa/pm.h
@@ -7,5 +7,14 @@
*
*/
-extern int pxa_pm_prepare(suspend_state_t state);
+struct pxa_cpu_pm_fns {
+ int save_size;
+ void (*save)(unsigned long *);
+ void (*restore)(unsigned long *);
+ int (*valid)(suspend_state_t state);
+ void (*enter)(suspend_state_t state);
+};
+
+extern struct pxa_cpu_pm_fns *pxa_cpu_pm_fns;
+
extern int pxa_pm_enter(suspend_state_t state);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.