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-rw-r--r--arch/arm/mach-at91/cpuidle.c2
-rw-r--r--arch/arm/mach-at91/include/mach/cpu.h9
-rw-r--r--arch/arm/mach-at91/pm.c2
-rw-r--r--arch/arm/mach-at91/pm.h30
-rw-r--r--arch/arm/mach-at91/setup.c22
5 files changed, 49 insertions, 16 deletions
diff --git a/arch/arm/mach-at91/cpuidle.c b/arch/arm/mach-at91/cpuidle.c
index 0c6381516a5a..4c6794603780 100644
--- a/arch/arm/mach-at91/cpuidle.c
+++ b/arch/arm/mach-at91/cpuidle.c
@@ -38,6 +38,8 @@ static int at91_enter_idle(struct cpuidle_device *dev,
at91rm9200_standby();
else if (cpu_is_at91sam9g45())
at91sam9g45_standby();
+ else if (cpu_is_at91sam9263())
+ at91sam9263_standby();
else
at91sam9_standby();
diff --git a/arch/arm/mach-at91/include/mach/cpu.h b/arch/arm/mach-at91/include/mach/cpu.h
index 0f3379fe645f..d3d7b993846b 100644
--- a/arch/arm/mach-at91/include/mach/cpu.h
+++ b/arch/arm/mach-at91/include/mach/cpu.h
@@ -86,7 +86,7 @@ enum at91_soc_type {
AT91_SOC_SAMA5D3,
/* Unknown type */
- AT91_SOC_NONE
+ AT91_SOC_UNKNOWN,
};
enum at91_soc_subtype {
@@ -107,8 +107,11 @@ enum at91_soc_subtype {
AT91_SOC_SAMA5D31, AT91_SOC_SAMA5D33, AT91_SOC_SAMA5D34,
AT91_SOC_SAMA5D35,
+ /* No subtype for this SoC */
+ AT91_SOC_SUBTYPE_NONE,
+
/* Unknown subtype */
- AT91_SOC_SUBTYPE_NONE
+ AT91_SOC_SUBTYPE_UNKNOWN,
};
struct at91_socinfo {
@@ -122,7 +125,7 @@ const char *at91_get_soc_subtype(struct at91_socinfo *c);
static inline int at91_soc_is_detected(void)
{
- return at91_soc_initdata.type != AT91_SOC_NONE;
+ return at91_soc_initdata.type != AT91_SOC_UNKNOWN;
}
#ifdef CONFIG_SOC_AT91RM9200
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 73f1f250403a..530db304ec5e 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -270,6 +270,8 @@ static int at91_pm_enter(suspend_state_t state)
at91rm9200_standby();
else if (cpu_is_at91sam9g45())
at91sam9g45_standby();
+ else if (cpu_is_at91sam9263())
+ at91sam9263_standby();
else
at91sam9_standby();
break;
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)
{
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 2ecd1693c804..fd00a09da86b 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -105,28 +105,32 @@ static void __init soc_detect(u32 dbgu_base)
switch (socid) {
case ARCH_ID_AT91RM9200:
at91_soc_initdata.type = AT91_SOC_RM9200;
- if (at91_soc_initdata.subtype == AT91_SOC_SUBTYPE_NONE)
+ if (at91_soc_initdata.subtype == AT91_SOC_SUBTYPE_UNKNOWN)
at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
at91_boot_soc = at91rm9200_soc;
break;
case ARCH_ID_AT91SAM9260:
at91_soc_initdata.type = AT91_SOC_SAM9260;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
at91_boot_soc = at91sam9260_soc;
break;
case ARCH_ID_AT91SAM9261:
at91_soc_initdata.type = AT91_SOC_SAM9261;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
at91_boot_soc = at91sam9261_soc;
break;
case ARCH_ID_AT91SAM9263:
at91_soc_initdata.type = AT91_SOC_SAM9263;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
at91_boot_soc = at91sam9263_soc;
break;
case ARCH_ID_AT91SAM9G20:
at91_soc_initdata.type = AT91_SOC_SAM9G20;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
at91_boot_soc = at91sam9260_soc;
break;
@@ -139,6 +143,7 @@ static void __init soc_detect(u32 dbgu_base)
case ARCH_ID_AT91SAM9RL64:
at91_soc_initdata.type = AT91_SOC_SAM9RL;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
at91_boot_soc = at91sam9rl_soc;
break;
@@ -161,6 +166,7 @@ static void __init soc_detect(u32 dbgu_base)
/* at91sam9g10 */
if ((socid & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) {
at91_soc_initdata.type = AT91_SOC_SAM9G10;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
at91_boot_soc = at91sam9261_soc;
}
/* at91sam9xe */
@@ -242,7 +248,7 @@ static const char *soc_name[] = {
[AT91_SOC_SAM9X5] = "at91sam9x5",
[AT91_SOC_SAM9N12] = "at91sam9n12",
[AT91_SOC_SAMA5D3] = "sama5d3",
- [AT91_SOC_NONE] = "Unknown"
+ [AT91_SOC_UNKNOWN] = "Unknown",
};
const char *at91_get_soc_type(struct at91_socinfo *c)
@@ -268,7 +274,8 @@ static const char *soc_subtype_name[] = {
[AT91_SOC_SAMA5D33] = "sama5d33",
[AT91_SOC_SAMA5D34] = "sama5d34",
[AT91_SOC_SAMA5D35] = "sama5d35",
- [AT91_SOC_SUBTYPE_NONE] = "Unknown"
+ [AT91_SOC_SUBTYPE_NONE] = "None",
+ [AT91_SOC_SUBTYPE_UNKNOWN] = "Unknown",
};
const char *at91_get_soc_subtype(struct at91_socinfo *c)
@@ -282,8 +289,8 @@ void __init at91_map_io(void)
/* Map peripherals */
iotable_init(&at91_io_desc, 1);
- at91_soc_initdata.type = AT91_SOC_NONE;
- at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
+ at91_soc_initdata.type = AT91_SOC_UNKNOWN;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;
soc_detect(AT91_BASE_DBGU0);
if (!at91_soc_is_detected())
@@ -294,8 +301,9 @@ void __init at91_map_io(void)
pr_info("AT91: Detected soc type: %s\n",
at91_get_soc_type(&at91_soc_initdata));
- pr_info("AT91: Detected soc subtype: %s\n",
- at91_get_soc_subtype(&at91_soc_initdata));
+ if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
+ pr_info("AT91: Detected soc subtype: %s\n",
+ at91_get_soc_subtype(&at91_soc_initdata));
if (!at91_soc_is_enabled())
panic("AT91: Soc not enabled");
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