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authorLinus Torvalds2013-05-07 11:22:14 -0700
committerLinus Torvalds2013-05-07 11:22:14 -0700
commit1bf25e78af317e6d5d9b5594dfeb0036e0d589d6 (patch)
tree49dbd2d7bd6856b8ae1864c2dd0c0eb5e36d5398 /arch/arm/mach-at91
parent38f56f33ca381751f9b8910f67e7a805ec0b68cb (diff)
parent0592c2189ece16f3e0c5a56245634aba93d0c9dd (diff)
Merge tag 'cleanup-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late cleanups from Arnd Bergmann: "These are cleanups and smaller changes that either depend on earlier feature branches or came in late during the development cycle. We normally try to get all cleanups early, so these are the exceptions: - A follow-up on the clocksource reworks, hopefully the last time we need to merge clocksource subsystem changes through arm-soc. A first set of patches was part of the original 3.10 arm-soc cleanup series because of interdependencies with timer drivers now moved out of arch/arm. - Migrating the SPEAr13xx platform away from using auxdata for DMA channel descriptions towards using information in device tree, based on the earlier SPEAr multiplatform series - A few follow-ups on the Atmel SAMA5 support and other changes for Atmel at91 based on the larger at91 reworks. - Moving the armada irqchip implementation to drivers/irqchip - Several OMAP cleanups following up on the larger series already merged in 3.10." * tag 'cleanup-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits) ARM: OMAP4: change the device names in usb_bind_phy ARM: OMAP2+: Fix mismerge for timer.c between ff931c82 and da4a686a ARM: SPEAr: conditionalize SMP code ARM: arch_timer: Silence debug preempt warnings ARM: OMAP: remove unused variable serial: amba-pl011: fix !CONFIG_DMA_ENGINE case ata: arasan: remove the need for platform_data ARM: at91/sama5d34ek.dts: remove not needed compatibility string ARM: at91: dts: add MCI DMA support ARM: at91: dts: add i2c dma support ARM: at91: dts: set #dma-cells to the correct value ARM: at91: suspend both memory controllers on at91sam9263 irqchip: armada-370-xp: slightly cleanup irq controller driver irqchip: armada-370-xp: move IRQ handler to avoid forward declaration irqchip: move IRQ driver for Armada 370/XP ARM: mvebu: move L2 cache initialization in init_early() devtree: add binding documentation for sp804 ARM: integrator-cp: convert use CLKSRC_OF for timer init ARM: versatile: use OF init for sp804 timer ARM: versatile: add versatile dtbs to dtbs target ...
Diffstat (limited to 'arch/arm/mach-at91')
-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 48f1228c611c..69f9e3bbf4e5 100644
--- a/arch/arm/mach-at91/cpuidle.c
+++ b/arch/arm/mach-at91/cpuidle.c
@@ -36,6 +36,8 @@ 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 e8491e77b1f7..e2f4bdd146d6 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");