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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-02-22 17:50:55 +0100 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2012-02-23 14:57:56 +0100 |
| commit | fb7e197bec45f15299315ed14292f09086d90a0b (patch) | |
| tree | 1b57707d7b0a9cd2533c1db057487b1ad1692860 /arch/arm/mach-at91/pm.c | |
| parent | f363c407b42c467d06675c852e55f26adb959915 (diff) | |
| download | blackbird-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.c | 15 |
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"); |
