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Diffstat (limited to 'arch/arm/mach-at91/pm.c')
-rw-r--r--arch/arm/mach-at91/pm.c41
1 files changed, 17 insertions, 24 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 1606379..f630250 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -136,7 +136,7 @@ static int at91_pm_verify_clocks(void)
unsigned long scsr;
int i;
- scsr = at91_sys_read(AT91_PMC_SCSR);
+ scsr = at91_pmc_read(AT91_PMC_SCSR);
/* USB must not be using PLLB */
if (cpu_is_at91rm9200()) {
@@ -150,11 +150,6 @@ static int at91_pm_verify_clocks(void)
pr_err("AT91: PM - Suspend-to-RAM with USB still active\n");
return 0;
}
- } else if (cpu_is_at91cap9()) {
- if ((scsr & AT91CAP9_PMC_UHP) != 0) {
- pr_err("AT91: PM - Suspend-to-RAM with USB still active\n");
- return 0;
- }
}
#ifdef CONFIG_AT91_PROGRAMMABLE_CLOCKS
@@ -165,7 +160,7 @@ static int at91_pm_verify_clocks(void)
if ((scsr & (AT91_PMC_PCK0 << i)) == 0)
continue;
- css = at91_sys_read(AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
+ css = at91_pmc_read(AT91_PMC_PCKR(i)) & AT91_PMC_CSS;
if (css != AT91_PMC_CSS_SLOW) {
pr_err("AT91: PM - Suspend-to-RAM with PCK%d src %d\n", i, css);
return 0;
@@ -193,23 +188,23 @@ int at91_suspend_entering_slow_clock(void)
EXPORT_SYMBOL(at91_suspend_entering_slow_clock);
-static void (*slow_clock)(void);
+static void (*slow_clock)(void __iomem *pmc, void __iomem *ramc0,
+ void __iomem *ramc1, int memctrl);
#ifdef CONFIG_AT91_SLOW_CLOCK
-extern void at91_slow_clock(void);
+extern void at91_slow_clock(void __iomem *pmc, void __iomem *ramc0,
+ void __iomem *ramc1, int memctrl);
extern u32 at91_slow_clock_sz;
#endif
-
static int at91_pm_enter(suspend_state_t state)
{
- u32 saved_lpr;
at91_gpio_suspend();
at91_irq_suspend();
pr_debug("AT91: PM - wake mask %08x, pm state %d\n",
/* remember all the always-wake irqs */
- (at91_sys_read(AT91_PMC_PCSR)
+ (at91_pmc_read(AT91_PMC_PCSR)
| (1 << AT91_ID_FIQ)
| (1 << AT91_ID_SYS)
| (at91_extern_irq))
@@ -234,11 +229,18 @@ static int at91_pm_enter(suspend_state_t state)
* turning off the main oscillator; reverse on wakeup.
*/
if (slow_clock) {
+ int memctrl = AT91_MEMCTRL_SDRAMC;
+
+ if (cpu_is_at91rm9200())
+ memctrl = AT91_MEMCTRL_MC;
+ else if (cpu_is_at91sam9g45())
+ memctrl = AT91_MEMCTRL_DDRSDR;
#ifdef CONFIG_AT91_SLOW_CLOCK
/* copy slow_clock handler to SRAM, and call it */
memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz);
#endif
- slow_clock();
+ slow_clock(at91_pmc_base, at91_ramc_base[0],
+ at91_ramc_base[1], memctrl);
break;
} else {
pr_info("AT91: PM - no slow clock mode enabled ...\n");
@@ -259,16 +261,7 @@ static int at91_pm_enter(suspend_state_t state)
* For ARM 926 based chips, this requirement is weaker
* as at91sam9 can access a RAM in self-refresh mode.
*/
- asm volatile ( "mov r0, #0\n\t"
- "b 1f\n\t"
- ".align 5\n\t"
- "1: mcr p15, 0, r0, c7, c10, 4\n\t"
- : /* no output */
- : /* no input */
- : "r0");
- saved_lpr = sdram_selfrefresh_enable();
- wait_for_interrupt_enable();
- sdram_selfrefresh_disable(saved_lpr);
+ at91_standby();
break;
case PM_SUSPEND_ON:
@@ -316,7 +309,7 @@ static int __init at91_pm_init(void)
#ifdef CONFIG_ARCH_AT91RM9200
/* AT91RM9200 SDRAM low-power mode cannot be used with self-refresh. */
- at91_sys_write(AT91_SDRAMC_LPR, 0);
+ at91_ramc_write(0, AT91RM9200_SDRAMC_LPR, 0);
#endif
suspend_set_ops(&at91_pm_ops);