diff options
| author | Alex Frid <afrid@nvidia.com> | 2012-02-04 22:32:44 -0800 |
|---|---|---|
| committer | Lokesh Pathak <lpathak@nvidia.com> | 2012-02-23 22:24:52 -0800 |
| commit | 88f88b1dd1427f5ed387b346956a6e6e46008926 (patch) | |
| tree | f8e4515f15b2984d84ed98b8ad0549943898cf41 /arch/arm/mach-tegra/pm-t3.c | |
| parent | 5faefcffab009466e2f3c426e38dedc32537b491 (diff) | |
ARM: tegra: power: Notify clock event in CPU mode switch
Add clock event notification to switch timekeeping to broadcast
timer during Tegra3 CPU mode switch. Skip notifications if mode
switch happens on entry/exit to/from suspend state when timekeeping
is already suspended.
Signed-off-by: Alex Frid <afrid@nvidia.com>
(cherry picked from commit 236fd35c40a748d8373d7f34b53c320045fa4d3a)
Change-Id: I38386dfe3d4ffb89f35828cd911d254b976f0063
Reviewed-on: http://git-master/r/84713
Tested-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/pm-t3.c')
| -rw-r--r-- | arch/arm/mach-tegra/pm-t3.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/pm-t3.c b/arch/arm/mach-tegra/pm-t3.c index 48f27cf01a0a..49a4c8951119 100644 --- a/arch/arm/mach-tegra/pm-t3.c +++ b/arch/arm/mach-tegra/pm-t3.c @@ -3,7 +3,7 @@ * * Tegra3 SOC-specific power and cluster management * - * Copyright (c) 2009-2011, NVIDIA Corporation. + * Copyright (c) 2009-2012, NVIDIA Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -26,6 +26,7 @@ #include <linux/irq.h> #include <linux/device.h> #include <linux/module.h> +#include <linux/clockchips.h> #include <mach/gpio.h> #include <mach/iomap.h> @@ -380,9 +381,17 @@ int tegra_cluster_control(unsigned int us, unsigned int flags) if (us) tegra_lp2_set_trigger(0); } else { + int cpu = 0; + tegra_set_cpu_in_lp2(0); cpu_pm_enter(); + if (!timekeeping_suspended) + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, + &cpu); tegra_idle_lp2_last(0, flags); + if (!timekeeping_suspended) + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, + &cpu); cpu_pm_exit(); tegra_clear_cpu_in_lp2(0); } |