diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2020-02-25 01:40:42 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2020-03-12 12:53:18 +0300 |
| commit | 859a6f6ee15ee8931da40fae31fdea73a5e72192 (patch) | |
| tree | 2909e6ea38a6368ccb172c537b020f75f51edbe6 /arch/arm/mach-tegra/pm.c | |
| parent | df25e554887f47c8e9c110e7cca2f27dbe6ef4fb (diff) | |
| download | linux-859a6f6ee15ee8931da40fae31fdea73a5e72192.tar.xz | |
ARM: tegra: Add tegra_pm_park_secondary_cpu()
This function resembles tegra_cpu_die() of the hotplug code, but
this variant is more suitable to be used for CPU PM because it's made
specifically to be used by cpu_suspend(). In short this function puts
secondary CPU offline, it will be used by the new CPUIDLE driver.
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Peter Geis <pgwipeout@gmail.com>
Tested-by: Jasper Korten <jja2000@gmail.com>
Tested-by: David Heidelberg <david@ixit.cz>
Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/pm.c')
| -rw-r--r-- | arch/arm/mach-tegra/pm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c index 3cab81b82866..f5ff3dd1dd81 100644 --- a/arch/arm/mach-tegra/pm.c +++ b/arch/arm/mach-tegra/pm.c @@ -436,4 +436,18 @@ void __init tegra_init_suspend(void) suspend_set_ops(&tegra_suspend_ops); } + +int tegra_pm_park_secondary_cpu(unsigned long cpu) +{ + if (cpu > 0) { + tegra_disable_clean_inv_dcache(TEGRA_FLUSH_CACHE_LOUIS); + + if (tegra_get_chip_id() == TEGRA20) + tegra20_hotplug_shutdown(); + else + tegra30_hotplug_shutdown(); + } + + return -EINVAL; +} #endif |