summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-at91/pm.c
diff options
context:
space:
mode:
authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2012-02-22 17:50:55 +0100
committerNicolas Ferre <nicolas.ferre@atmel.com>2012-02-23 14:57:56 +0100
commitfb7e197bec45f15299315ed14292f09086d90a0b (patch)
tree1b57707d7b0a9cd2533c1db057487b1ad1692860 /arch/arm/mach-at91/pm.c
parentf363c407b42c467d06675c852e55f26adb959915 (diff)
downloadblackbird-op-linux-fb7e197bec45f15299315ed14292f09086d90a0b.tar.gz
blackbird-op-linux-fb7e197bec45f15299315ed14292f09086d90a0b.zip
ARM: at91/pm_slowclock: add runtime detection of memory contoller
This will allow to have all SoC in one kernel image. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/pm.c')
-rw-r--r--arch/arm/mach-at91/pm.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 46dbb7e1339c..2793591c73c0 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -188,10 +188,12 @@ int at91_suspend_entering_slow_clock(void)
EXPORT_SYMBOL(at91_suspend_entering_slow_clock);
-static void (*slow_clock)(void __iomem *pmc, void __iomem *ramc0, void __iomem *ramc1);
+static void (*slow_clock)(void __iomem *pmc, void __iomem *ramc0,
+ void __iomem *ramc1, int memctrl);
#ifdef CONFIG_AT91_SLOW_CLOCK
-extern void at91_slow_clock(void __iomem *pmc, void __iomem *ramc0, void __iomem *ramc1);
+extern void at91_slow_clock(void __iomem *pmc, void __iomem *ramc0,
+ void __iomem *ramc1, int memctrl);
extern u32 at91_slow_clock_sz;
#endif
@@ -241,11 +243,18 @@ static int at91_pm_enter(suspend_state_t state)
* turning off the main oscillator; reverse on wakeup.
*/
if (slow_clock) {
+ int memctrl = AT91_MEMCTRL_SDRAMC;
+
+ if (cpu_is_at91rm9200())
+ memctrl = AT91_MEMCTRL_MC;
+ else if (cpu_is_at91sam9g45())
+ memctrl = AT91_MEMCTRL_DDRSDR;
#ifdef CONFIG_AT91_SLOW_CLOCK
/* copy slow_clock handler to SRAM, and call it */
memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz);
#endif
- slow_clock(at91_pmc_base, at91_ramc_base[0], at91_ramc_base[1]);
+ slow_clock(at91_pmc_base, at91_ramc_base[0],
+ at91_ramc_base[1], memctrl);
break;
} else {
pr_info("AT91: PM - no slow clock mode enabled ...\n");
OpenPOWER on IntegriCloud