| Message ID | 1531226879-11802-4-git-send-email-avienamo@nvidia.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Tegra PMC pinctrl pad configuration | expand |
On 10/07/18 13:47, Aapo Vienamo wrote: > Implement a function to query whether a pad is in deep power down mode. > > Signed-off-by: Aapo Vienamo <avienamo@nvidia.com> > --- > drivers/soc/tegra/pmc.c | 17 +++++++++++++++++ > include/soc/tegra/pmc.h | 1 + > 2 files changed, 18 insertions(+) > > diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c > index 83b39cd..3f5b69fd 100644 > --- a/drivers/soc/tegra/pmc.c > +++ b/drivers/soc/tegra/pmc.c > @@ -1075,6 +1075,23 @@ int tegra_io_pad_power_disable(enum tegra_io_pad id) > } > EXPORT_SYMBOL(tegra_io_pad_power_disable); > > +int tegra_io_pad_is_powered(enum tegra_io_pad id) > +{ > + unsigned long request, status; > + u32 mask; > + u32 value; Nit-pick ... could have been on a single line. > + 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); > +} > +EXPORT_SYMBOL(tegra_io_pad_is_powered); > + > int tegra_io_pad_set_voltage(enum tegra_io_pad id, > enum tegra_io_pad_voltage voltage) > { > diff --git a/include/soc/tegra/pmc.h b/include/soc/tegra/pmc.h > index c32bf91..f88c6e2 100644 > --- a/include/soc/tegra/pmc.h > +++ b/include/soc/tegra/pmc.h > @@ -162,6 +162,7 @@ int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, > > int tegra_io_pad_power_enable(enum tegra_io_pad id); > int tegra_io_pad_power_disable(enum tegra_io_pad id); > +int tegra_io_pad_is_powered(enum tegra_io_pad id); > int tegra_io_pad_set_voltage(enum tegra_io_pad id, > enum tegra_io_pad_voltage voltage); > int tegra_io_pad_get_voltage(enum tegra_io_pad id); > Acked-by: Jon Hunter <jonathanh@nvidia.com> Cheers Jon
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 83b39cd..3f5b69fd 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -1075,6 +1075,23 @@ int tegra_io_pad_power_disable(enum tegra_io_pad id) } EXPORT_SYMBOL(tegra_io_pad_power_disable); +int tegra_io_pad_is_powered(enum tegra_io_pad id) +{ + unsigned long request, status; + u32 mask; + u32 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); +} +EXPORT_SYMBOL(tegra_io_pad_is_powered); + int tegra_io_pad_set_voltage(enum tegra_io_pad id, enum tegra_io_pad_voltage voltage) { diff --git a/include/soc/tegra/pmc.h b/include/soc/tegra/pmc.h index c32bf91..f88c6e2 100644 --- a/include/soc/tegra/pmc.h +++ b/include/soc/tegra/pmc.h @@ -162,6 +162,7 @@ int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, int tegra_io_pad_power_enable(enum tegra_io_pad id); int tegra_io_pad_power_disable(enum tegra_io_pad id); +int tegra_io_pad_is_powered(enum tegra_io_pad id); int tegra_io_pad_set_voltage(enum tegra_io_pad id, enum tegra_io_pad_voltage voltage); int tegra_io_pad_get_voltage(enum tegra_io_pad id);
Implement a function to query whether a pad is in deep power down mode. Signed-off-by: Aapo Vienamo <avienamo@nvidia.com> --- drivers/soc/tegra/pmc.c | 17 +++++++++++++++++ include/soc/tegra/pmc.h | 1 + 2 files changed, 18 insertions(+)