diff options
| author | Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> | 2021-06-03 08:42:12 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-06-21 13:08:41 +0100 |
| commit | 89a6a5e56c8248a077d12424a1383a6b18ea840b (patch) | |
| tree | 31a8361eae067daac0747acaac685a5db14cffad /include/linux/regulator/driver.h | |
| parent | 7111c6d1b31b42c8c758f6681e895a5116e3bad6 (diff) | |
regulator: add property parsing and callbacks to set protection limits
Add DT property parsing code and setting callback for regulator over/under
voltage, over-current and temperature error limits.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/e7b8007ba9eae7076178bf3363fb942ccb1cc9a5.1622628334.git.matti.vaittinen@fi.rohmeurope.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/regulator/driver.h')
| -rw-r--r-- | include/linux/regulator/driver.h | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 1d1a8951e740..4ebfaacf42b7 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -40,6 +40,15 @@ enum regulator_status { REGULATOR_STATUS_UNDEFINED, }; +enum regulator_detection_severity { + /* Hardware shut down voltage outputs if condition is detected */ + REGULATOR_SEVERITY_PROT, + /* Hardware is probably damaged/inoperable */ + REGULATOR_SEVERITY_ERR, + /* Hardware is still recoverable but recovery action must be taken */ + REGULATOR_SEVERITY_WARN, +}; + /* Initialize struct linear_range for regulators */ #define REGULATOR_LINEAR_RANGE(_min_uV, _min_sel, _max_sel, _step_uV) \ { \ @@ -78,8 +87,25 @@ enum regulator_status { * @get_current_limit: Get the configured limit for a current-limited regulator. * @set_input_current_limit: Configure an input limit. * - * @set_over_current_protection: Support capability of automatically shutting - * down when detecting an over current event. + * @set_over_current_protection: Support enabling of and setting limits for over + * current situation detection. Detection can be configured for three + * levels of severity. + * REGULATOR_SEVERITY_PROT should automatically shut down the regulator(s). + * REGULATOR_SEVERITY_ERR should indicate that over-current situation is + * caused by an unrecoverable error but HW does not perform + * automatic shut down. + * REGULATOR_SEVERITY_WARN should indicate situation where hardware is + * still believed to not be damaged but that a board sepcific + * recovery action is needed. If lim_uA is 0 the limit should not + * be changed but the detection should just be enabled/disabled as + * is requested. + * @set_over_voltage_protection: Support enabling of and setting limits for over + * voltage situation detection. Detection can be configured for same + * severities as over current protection. + * @set_under_voltage_protection: Support enabling of and setting limits for + * under situation detection. + * @set_thermal_protection: Support enabling of and setting limits for over + * temperature situation detection. * * @set_active_discharge: Set active discharge enable/disable of regulators. * @@ -143,8 +169,15 @@ struct regulator_ops { int (*get_current_limit) (struct regulator_dev *); int (*set_input_current_limit) (struct regulator_dev *, int lim_uA); - int (*set_over_current_protection) (struct regulator_dev *); - int (*set_active_discharge) (struct regulator_dev *, bool enable); + int (*set_over_current_protection)(struct regulator_dev *, int lim_uA, + int severity, bool enable); + int (*set_over_voltage_protection)(struct regulator_dev *, int lim_uV, + int severity, bool enable); + int (*set_under_voltage_protection)(struct regulator_dev *, int lim_uV, + int severity, bool enable); + int (*set_thermal_protection)(struct regulator_dev *, int lim, + int severity, bool enable); + int (*set_active_discharge)(struct regulator_dev *, bool enable); /* enable/disable regulator */ int (*enable) (struct regulator_dev *); |