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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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