1 files changed, 19 insertions, 31 deletions

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 62ad95556c36..f630250c6b87 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -34,7 +34,6 @@
 /*
  * Show the reason for the previous system reset.
  */
-#if defined(AT91_RSTC)
 
 #include <mach/at91_rstc.h>
 #include <mach/at91_shdwc.h>
@@ -58,10 +57,10 @@ static void __init show_reset_status(void)
         char *reason, *r2 = reset;
         u32 reset_type, wake_type;
 
-        if (!at91_shdwc_base)
+        if (!at91_shdwc_base || !at91_rstc_base)
                 return;
 
-        reset_type = at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_RSTTYP;
+        reset_type = at91_rstc_read(AT91_RSTC_SR) & AT91_RSTC_RSTTYP;
         wake_type = at91_shdwc_read(AT91_SHDW_SR);
 
         switch (reset_type) {
@@ -102,10 +101,6 @@ static void __init show_reset_status(void)
         }
         pr_info("AT91: Starting after %s %s\n", reason, r2);
 }
-#else
-static void __init show_reset_status(void) {}
-#endif
-
 
 static int at91_pm_valid_state(suspend_state_t state)
 {
@@ -141,7 +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()) {
@@ -155,11 +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
@@ -170,7 +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;
@@ -198,23 +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))
@@ -239,11 +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");
@@ -264,16 +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:
@@ -321,7 +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);