Commit f142b9d6 authored by Aapo Vienamo's avatar Aapo Vienamo Committed by Thierry Reding
Browse files

soc/tegra: pmc: Implement tegra_io_pad_is_powered() 



Implement a function to query whether a pad is in deep power down mode.
This is needed by the pinctrl callbacks.

Signed-off-by: default avatarAapo Vienamo <avienamo@nvidia.com>
Acked-by: default avatarJon Hunter <jonathanh@nvidia.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 00ead3c9

drivers/soc/tegra/pmc.c

+15 −0
Original line number Diff line number Diff line
@@ -1075,6 +1075,21 @@ int tegra_io_pad_power_disable(enum tegra_io_pad id) 
}

EXPORT_SYMBOL(tegra_io_pad_power_disable);



static int tegra_io_pad_is_powered(enum tegra_io_pad id)

{

	unsigned long request, status;

	u32 mask, value;

	int err;



	err = tegra_io_pad_get_dpd_register_bit(id, &request, &status, &mask);

	if (err)

		return err;



	value = tegra_pmc_readl(status);



	return !(value & mask);

}



int tegra_io_pad_set_voltage(enum tegra_io_pad id,

			     enum tegra_io_pad_voltage voltage)

{