[PATCH v3 3/7] soc/tegra: pmc: Implement tegra_io_pad_is_powered()

[Aapo Vienamo]

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

Signed-off-by: Aapo Vienamo 
Acked-by: Jon Hunter 
---
 drivers/soc/tegra/pmc.c | 16 
 1 file changed, 16 insertions(+)

diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 393ca72..784c182 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -1075,6 +1075,22 @@ 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;
+   u32 value;
+   int err;
+
+   err = tegra_io_pad_get_dpd_register_bit(id, , , );
+   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)
 {
-- 
2.7.4

[PATCH v3 3/7] soc/tegra: pmc: Implement tegra_io_pad_is_powered()

[Aapo Vienamo]

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

Signed-off-by: Aapo Vienamo 
Acked-by: Jon Hunter 
---
 drivers/soc/tegra/pmc.c | 16 
 1 file changed, 16 insertions(+)

diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 393ca72..784c182 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -1075,6 +1075,22 @@ 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;
+   u32 value;
+   int err;
+
+   err = tegra_io_pad_get_dpd_register_bit(id, , , );
+   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)
 {
-- 
2.7.4