soc/tegra: pmc: Implement tegra_io_pad_is_powered() (f142b9d6) · Commits · 戴 / test

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

drivers/soc/tegra/pmc.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -1075,6 +1075,21 @@ unlock:
		}
		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)
		{