Merge tag 'at91-soc' of git://github.com/at91linux/linux-at91 into la…

…te/cleanup

From Nicolas Ferre:
Little modification in SoC presentation in kernel log.
Removing of a long-standing warning in sam9263 PM code.

* tag 'at91-soc' of git://github.com/at91linux/linux-at91:
  ARM: at91: suspend both memory controllers on at91sam9263
  ARM: at91: change "Unknown" qualifier SoC subtype handling

Signed-off-by: Olof Johansson <olof@lixom.net>

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();
 

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

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;

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)
 {

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");