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-rw-r--r--arch/arm/mach-at91/pm.h30
1 files changed, 24 insertions, 6 deletions
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
index 38f467c6b710..2f5908f0b8c5 100644
--- a/arch/arm/mach-at91/pm.h
+++ b/arch/arm/mach-at91/pm.h
@@ -70,13 +70,31 @@ static inline void at91sam9g45_standby(void)
at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1);
}
-#ifdef CONFIG_SOC_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.
+/* We manage both DDRAM/SDRAM controllers, we need more than one value to
+ * remember.
*/
-#warning Assuming EB1 SDRAM controller is *NOT* used
-#endif
+static inline void at91sam9263_standby(void)
+{
+ u32 lpr0, lpr1;
+ u32 saved_lpr0, saved_lpr1;
+
+ saved_lpr1 = at91_ramc_read(1, AT91_SDRAMC_LPR);
+ lpr1 = saved_lpr1 & ~AT91_SDRAMC_LPCB;
+ lpr1 |= AT91_SDRAMC_LPCB_SELF_REFRESH;
+
+ saved_lpr0 = at91_ramc_read(0, AT91_SDRAMC_LPR);
+ lpr0 = saved_lpr0 & ~AT91_SDRAMC_LPCB;
+ lpr0 |= AT91_SDRAMC_LPCB_SELF_REFRESH;
+
+ /* self-refresh mode now */
+ at91_ramc_write(0, AT91_SDRAMC_LPR, lpr0);
+ at91_ramc_write(1, AT91_SDRAMC_LPR, lpr1);
+
+ cpu_do_idle();
+
+ at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr0);
+ at91_ramc_write(1, AT91_SDRAMC_LPR, saved_lpr1);
+}
static inline void at91sam9_standby(void)
{