diff options
Diffstat (limited to 'drivers/soc/tegra/pmc.c')
| -rw-r--r-- | drivers/soc/tegra/pmc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index c04ff5eb7cad..d366ebcca171 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -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) { |