From e607b0f985f5277324e3fdce5bb462ef4eac4bc9 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Mon, 10 Dec 2012 00:22:06 -0500 Subject: ARM: vexpress/TC2: implement PM suspend method Similar to power_down(), except that for a suspend, the firmware mailbox address has to be set prior entering low power mode. The residency argument is not used yet, so the last man always shuts down the cluster for now. Signed-off-by: Nicolas Pitre Acked-by: Pawel Moll --- arch/arm/mach-vexpress/tc2_pm.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-vexpress/tc2_pm.c') diff --git a/arch/arm/mach-vexpress/tc2_pm.c b/arch/arm/mach-vexpress/tc2_pm.c index cdc606816cdd..ddd97dd4e9b7 100644 --- a/arch/arm/mach-vexpress/tc2_pm.c +++ b/arch/arm/mach-vexpress/tc2_pm.c @@ -95,7 +95,7 @@ static int tc2_pm_power_up(unsigned int cpu, unsigned int cluster) return 0; } -static void tc2_pm_power_down(void) +static void tc2_pm_down(u64 residency) { unsigned int mpidr, cpu, cluster; bool last_man = false, skip_wfi = false; @@ -209,6 +209,22 @@ static void tc2_pm_power_down(void) /* Not dead at this point? Let our caller cope. */ } +static void tc2_pm_power_down(void) +{ + tc2_pm_down(0); +} + +static void tc2_pm_suspend(u64 residency) +{ + unsigned int mpidr, cpu, cluster; + + mpidr = read_cpuid_mpidr(); + cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + ve_spc_set_resume_addr(cluster, cpu, virt_to_phys(mcpm_entry_point)); + tc2_pm_down(residency); +} + static void tc2_pm_powered_up(void) { unsigned int mpidr, cpu, cluster; @@ -242,6 +258,7 @@ static void tc2_pm_powered_up(void) static const struct mcpm_platform_ops tc2_pm_power_ops = { .power_up = tc2_pm_power_up, .power_down = tc2_pm_power_down, + .suspend = tc2_pm_suspend, .powered_up = tc2_pm_powered_up, }; -- cgit v1.2.3-59-g8ed1b