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Subject[PATCH v9 15/17] cpuidle: tegra: Disable CC6 state if LP2 unavailable
Date
LP2 suspending could be unavailable, for example if it is disabled in a
device-tree. CC6 cpuidle state won't work in that case.

Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/cpuidle/cpuidle-tegra.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/cpuidle/cpuidle-tegra.c b/drivers/cpuidle/cpuidle-tegra.c
index b6cdad8437af..675b8a4464ba 100644
--- a/drivers/cpuidle/cpuidle-tegra.c
+++ b/drivers/cpuidle/cpuidle-tegra.c
@@ -31,6 +31,7 @@
#include <soc/tegra/fuse.h>
#include <soc/tegra/irq.h>
#include <soc/tegra/pm.h>
+#include <soc/tegra/pmc.h>

#include <asm/cpuidle.h>
#include <asm/firmware.h>
@@ -334,6 +335,10 @@ static void tegra_cpuidle_setup_tegra114_c7_state(void)

static int tegra_cpuidle_probe(struct platform_device *pdev)
{
+ /* LP2 could be disabled in device-tree */
+ if (tegra_pmc_get_suspend_mode() < TEGRA_SUSPEND_LP2)
+ tegra_cpuidle_disable_state(TEGRA_CC6);
+
/*
* Required suspend-resume functionality, which is provided by the
* Tegra-arch core and PMC driver, is unavailable if PM-sleep option
--
2.24.0
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