regulator: core: Add new API to poll for error conditions
Regulator consumers can receive event notifications when
errors are reported to the driver, but currently, there is
no way for a regulator consumer to know when the error is over.
To allow a regulator consumer to poll for error conditions
add a new API: regulator_get_error_flags.
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index 6921082..528eb1f 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -120,6 +120,25 @@ struct regmap;
#define REGULATOR_EVENT_PRE_DISABLE 0x400
#define REGULATOR_EVENT_ABORT_DISABLE 0x800
+/*
+ * Regulator errors that can be queried using regulator_get_error_flags
+ *
+ * UNDER_VOLTAGE Regulator output is under voltage.
+ * OVER_CURRENT Regulator output current is too high.
+ * REGULATION_OUT Regulator output is out of regulation.
+ * FAIL Regulator output has failed.
+ * OVER_TEMP Regulator over temp.
+ *
+ * NOTE: These errors can be OR'ed together.
+ */
+
+#define REGULATOR_ERROR_UNDER_VOLTAGE BIT(1)
+#define REGULATOR_ERROR_OVER_CURRENT BIT(2)
+#define REGULATOR_ERROR_REGULATION_OUT BIT(3)
+#define REGULATOR_ERROR_FAIL BIT(4)
+#define REGULATOR_ERROR_OVER_TEMP BIT(5)
+
+
/**
* struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event
*
@@ -237,6 +256,8 @@ int regulator_get_current_limit(struct regulator *regulator);
int regulator_set_mode(struct regulator *regulator, unsigned int mode);
unsigned int regulator_get_mode(struct regulator *regulator);
+int regulator_get_error_flags(struct regulator *regulator,
+ unsigned int *flags);
int regulator_set_load(struct regulator *regulator, int load_uA);
int regulator_allow_bypass(struct regulator *regulator, bool allow);
@@ -477,6 +498,11 @@ static inline unsigned int regulator_get_mode(struct regulator *regulator)
return REGULATOR_MODE_NORMAL;
}
+static inline int regulator_get_error_flags(struct regulator *regulator)
+{
+ return -EINVAL;
+}
+
static inline int regulator_set_load(struct regulator *regulator, int load_uA)
{
return REGULATOR_MODE_NORMAL;