ARM: 5778/1: AT91: Add cpuidle support

[pandora-kernel.git] / arch / arm / mach-at91 / pm.c

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 4028724..6156689 100644 (file)
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -29,62 +29,7 @@
 #include <mach/cpu.h>
 
 #include "generic.h"
-
-#ifdef CONFIG_ARCH_AT91RM9200
-#include <mach/at91rm9200_mc.h>
-
-/*
- * The AT91RM9200 goes into self-refresh mode with this command, and will
- * terminate self-refresh automatically on the next SDRAM access.
- */
-#define sdram_selfrefresh_enable()     at91_sys_write(AT91_SDRAMC_SRR, 1)
-#define sdram_selfrefresh_disable()    do {} while (0)
-
-#elif defined(CONFIG_ARCH_AT91CAP9)
-#include <mach/at91cap9_ddrsdr.h>
-
-static u32 saved_lpr;
-
-static inline void sdram_selfrefresh_enable(void)
-{
-       u32 lpr;
-
-       saved_lpr = at91_sys_read(AT91_DDRSDRC_LPR);
-
-       lpr = saved_lpr & ~AT91_DDRSDRC_LPCB;
-       at91_sys_write(AT91_DDRSDRC_LPR, lpr | AT91_DDRSDRC_LPCB_SELF_REFRESH);
-}
-
-#define sdram_selfrefresh_disable()    at91_sys_write(AT91_DDRSDRC_LPR, saved_lpr)
-
-#else
-#include <mach/at91sam9_sdramc.h>
-
-#ifdef CONFIG_ARCH_AT91SAM9263
-/*
- * FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
- * handle those cases both here and in the Suspend-To-RAM support.
- */
-#define        AT91_SDRAMC     AT91_SDRAMC0
-#warning Assuming EB1 SDRAM controller is *NOT* used
-#endif
-
-static u32 saved_lpr;
-
-static inline void sdram_selfrefresh_enable(void)
-{
-       u32 lpr;
-
-       saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
-
-       lpr = saved_lpr & ~AT91_SDRAMC_LPCB;
-       at91_sys_write(AT91_SDRAMC_LPR, lpr | AT91_SDRAMC_LPCB_SELF_REFRESH);
-}
-
-#define sdram_selfrefresh_disable()    at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
-
-#endif
-
+#include "pm.h"
 
 /*
  * Show the reason for the previous system reset.
@@ -260,6 +205,7 @@ extern u32 at91_slow_clock_sz;
 
 static int at91_pm_enter(suspend_state_t state)
 {
+       u32 saved_lpr;
        at91_gpio_suspend();
        at91_irq_suspend();
 
@@ -315,9 +261,9 @@ static int at91_pm_enter(suspend_state_t state)
                         */
                        asm("b 1f; .align 5; 1:");
                        asm("mcr p15, 0, r0, c7, c10, 4");      /* drain write buffer */
-                       sdram_selfrefresh_enable();
+                       saved_lpr = sdram_selfrefresh_enable();
                        asm("mcr p15, 0, r0, c7, c0, 4");       /* wait for interrupt */
-                       sdram_selfrefresh_disable();
+                       sdram_selfrefresh_disable(saved_lpr);
                        break;
 
                case PM_SUSPEND_ON: