forked from luck/tmp_suning_uos_patched
Merge remote-tracking branch 'regulator/topic/helpers' into regulator-next
This commit is contained in:
Mark Brown
commit
724d054490
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|
@ -3,7 +3,7 @@
|
|||
#
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||||
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||||
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||||
obj-$(CONFIG_REGULATOR) += core.o dummy.o fixed-helper.o
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||||
obj-$(CONFIG_REGULATOR) += core.o dummy.o fixed-helper.o helpers.o
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||||
obj-$(CONFIG_OF) += of_regulator.o
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||||
obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o
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obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o
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||||
|
|
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|||
|
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@ -1904,77 +1904,6 @@ int regulator_disable_deferred(struct regulator *regulator, int ms)
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}
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EXPORT_SYMBOL_GPL(regulator_disable_deferred);
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/**
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* regulator_is_enabled_regmap - standard is_enabled() for regmap users
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*
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* @rdev: regulator to operate on
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*
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* Regulators that use regmap for their register I/O can set the
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* enable_reg and enable_mask fields in their descriptor and then use
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* this as their is_enabled operation, saving some code.
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*/
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int regulator_is_enabled_regmap(struct regulator_dev *rdev)
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{
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unsigned int val;
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int ret;
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ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
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if (ret != 0)
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return ret;
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if (rdev->desc->enable_is_inverted)
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return (val & rdev->desc->enable_mask) == 0;
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else
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return (val & rdev->desc->enable_mask) != 0;
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}
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EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap);
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/**
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* regulator_enable_regmap - standard enable() for regmap users
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*
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* @rdev: regulator to operate on
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*
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* Regulators that use regmap for their register I/O can set the
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* enable_reg and enable_mask fields in their descriptor and then use
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* this as their enable() operation, saving some code.
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*/
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int regulator_enable_regmap(struct regulator_dev *rdev)
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{
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unsigned int val;
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if (rdev->desc->enable_is_inverted)
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val = 0;
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else
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val = rdev->desc->enable_mask;
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return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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rdev->desc->enable_mask, val);
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}
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EXPORT_SYMBOL_GPL(regulator_enable_regmap);
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/**
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* regulator_disable_regmap - standard disable() for regmap users
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*
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* @rdev: regulator to operate on
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*
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* Regulators that use regmap for their register I/O can set the
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* enable_reg and enable_mask fields in their descriptor and then use
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* this as their disable() operation, saving some code.
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*/
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int regulator_disable_regmap(struct regulator_dev *rdev)
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{
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unsigned int val;
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if (rdev->desc->enable_is_inverted)
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val = rdev->desc->enable_mask;
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else
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val = 0;
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return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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rdev->desc->enable_mask, val);
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}
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EXPORT_SYMBOL_GPL(regulator_disable_regmap);
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static int _regulator_is_enabled(struct regulator_dev *rdev)
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{
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/* A GPIO control always takes precedence */
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@ -2059,92 +1988,6 @@ int regulator_count_voltages(struct regulator *regulator)
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}
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EXPORT_SYMBOL_GPL(regulator_count_voltages);
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/**
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* regulator_list_voltage_linear - List voltages with simple calculation
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*
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* @rdev: Regulator device
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* @selector: Selector to convert into a voltage
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*
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* Regulators with a simple linear mapping between voltages and
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* selectors can set min_uV and uV_step in the regulator descriptor
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* and then use this function as their list_voltage() operation,
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*/
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int regulator_list_voltage_linear(struct regulator_dev *rdev,
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unsigned int selector)
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{
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if (selector >= rdev->desc->n_voltages)
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return -EINVAL;
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if (selector < rdev->desc->linear_min_sel)
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return 0;
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selector -= rdev->desc->linear_min_sel;
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return rdev->desc->min_uV + (rdev->desc->uV_step * selector);
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}
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EXPORT_SYMBOL_GPL(regulator_list_voltage_linear);
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/**
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* regulator_list_voltage_linear_range - List voltages for linear ranges
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*
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* @rdev: Regulator device
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* @selector: Selector to convert into a voltage
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*
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* Regulators with a series of simple linear mappings between voltages
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* and selectors can set linear_ranges in the regulator descriptor and
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* then use this function as their list_voltage() operation,
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*/
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int regulator_list_voltage_linear_range(struct regulator_dev *rdev,
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unsigned int selector)
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{
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const struct regulator_linear_range *range;
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int i;
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if (!rdev->desc->n_linear_ranges) {
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BUG_ON(!rdev->desc->n_linear_ranges);
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||||
return -EINVAL;
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||||
}
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|
||||
for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
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range = &rdev->desc->linear_ranges[i];
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if (!(selector >= range->min_sel &&
|
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selector <= range->max_sel))
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continue;
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selector -= range->min_sel;
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return range->min_uV + (range->uV_step * selector);
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||||
}
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||||
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return -EINVAL;
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||||
}
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EXPORT_SYMBOL_GPL(regulator_list_voltage_linear_range);
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/**
|
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* regulator_list_voltage_table - List voltages with table based mapping
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*
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* @rdev: Regulator device
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* @selector: Selector to convert into a voltage
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*
|
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* Regulators with table based mapping between voltages and
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* selectors can set volt_table in the regulator descriptor
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* and then use this function as their list_voltage() operation.
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*/
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int regulator_list_voltage_table(struct regulator_dev *rdev,
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unsigned int selector)
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{
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if (!rdev->desc->volt_table) {
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BUG_ON(!rdev->desc->volt_table);
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return -EINVAL;
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}
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if (selector >= rdev->desc->n_voltages)
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return -EINVAL;
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return rdev->desc->volt_table[selector];
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}
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EXPORT_SYMBOL_GPL(regulator_list_voltage_table);
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/**
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* regulator_list_voltage - enumerate supported voltages
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* @regulator: regulator source
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@ -2239,235 +2082,6 @@ int regulator_is_supported_voltage(struct regulator *regulator,
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}
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EXPORT_SYMBOL_GPL(regulator_is_supported_voltage);
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|
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/**
|
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* regulator_get_voltage_sel_regmap - standard get_voltage_sel for regmap users
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*
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* @rdev: regulator to operate on
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*
|
||||
* Regulators that use regmap for their register I/O can set the
|
||||
* vsel_reg and vsel_mask fields in their descriptor and then use this
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* as their get_voltage_vsel operation, saving some code.
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||||
*/
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int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev)
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{
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unsigned int val;
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int ret;
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||||
ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
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if (ret != 0)
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return ret;
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||||
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||||
val &= rdev->desc->vsel_mask;
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val >>= ffs(rdev->desc->vsel_mask) - 1;
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return val;
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}
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EXPORT_SYMBOL_GPL(regulator_get_voltage_sel_regmap);
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/**
|
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* regulator_set_voltage_sel_regmap - standard set_voltage_sel for regmap users
|
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*
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* @rdev: regulator to operate on
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* @sel: Selector to set
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*
|
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* Regulators that use regmap for their register I/O can set the
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* vsel_reg and vsel_mask fields in their descriptor and then use this
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* as their set_voltage_vsel operation, saving some code.
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*/
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int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel)
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{
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int ret;
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sel <<= ffs(rdev->desc->vsel_mask) - 1;
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ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
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rdev->desc->vsel_mask, sel);
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if (ret)
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return ret;
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if (rdev->desc->apply_bit)
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ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg,
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rdev->desc->apply_bit,
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rdev->desc->apply_bit);
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return ret;
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}
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EXPORT_SYMBOL_GPL(regulator_set_voltage_sel_regmap);
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/**
|
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* regulator_map_voltage_iterate - map_voltage() based on list_voltage()
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*
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* @rdev: Regulator to operate on
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* @min_uV: Lower bound for voltage
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* @max_uV: Upper bound for voltage
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*
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* Drivers implementing set_voltage_sel() and list_voltage() can use
|
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* this as their map_voltage() operation. It will find a suitable
|
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* voltage by calling list_voltage() until it gets something in bounds
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* for the requested voltages.
|
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*/
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int regulator_map_voltage_iterate(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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int best_val = INT_MAX;
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int selector = 0;
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int i, ret;
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/* Find the smallest voltage that falls within the specified
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* range.
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*/
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for (i = 0; i < rdev->desc->n_voltages; i++) {
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ret = rdev->desc->ops->list_voltage(rdev, i);
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if (ret < 0)
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continue;
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if (ret < best_val && ret >= min_uV && ret <= max_uV) {
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best_val = ret;
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selector = i;
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}
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}
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if (best_val != INT_MAX)
|
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return selector;
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else
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return -EINVAL;
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}
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EXPORT_SYMBOL_GPL(regulator_map_voltage_iterate);
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/**
|
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* regulator_map_voltage_ascend - map_voltage() for ascendant voltage list
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers that have ascendant voltage list can use this as their
|
||||
* map_voltage() operation.
|
||||
*/
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||||
int regulator_map_voltage_ascend(struct regulator_dev *rdev,
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int min_uV, int max_uV)
|
||||
{
|
||||
int i, ret;
|
||||
|
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for (i = 0; i < rdev->desc->n_voltages; i++) {
|
||||
ret = rdev->desc->ops->list_voltage(rdev, i);
|
||||
if (ret < 0)
|
||||
continue;
|
||||
|
||||
if (ret > max_uV)
|
||||
break;
|
||||
|
||||
if (ret >= min_uV && ret <= max_uV)
|
||||
return i;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_ascend);
|
||||
|
||||
/**
|
||||
* regulator_map_voltage_linear - map_voltage() for simple linear mappings
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers providing min_uV and uV_step in their regulator_desc can
|
||||
* use this as their map_voltage() operation.
|
||||
*/
|
||||
int regulator_map_voltage_linear(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
int ret, voltage;
|
||||
|
||||
/* Allow uV_step to be 0 for fixed voltage */
|
||||
if (rdev->desc->n_voltages == 1 && rdev->desc->uV_step == 0) {
|
||||
if (min_uV <= rdev->desc->min_uV && rdev->desc->min_uV <= max_uV)
|
||||
return 0;
|
||||
else
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (!rdev->desc->uV_step) {
|
||||
BUG_ON(!rdev->desc->uV_step);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (min_uV < rdev->desc->min_uV)
|
||||
min_uV = rdev->desc->min_uV;
|
||||
|
||||
ret = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret += rdev->desc->linear_min_sel;
|
||||
|
||||
/* Map back into a voltage to verify we're still in bounds */
|
||||
voltage = rdev->desc->ops->list_voltage(rdev, ret);
|
||||
if (voltage < min_uV || voltage > max_uV)
|
||||
return -EINVAL;
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_linear);
|
||||
|
||||
/**
|
||||
* regulator_map_voltage_linear - map_voltage() for multiple linear ranges
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers providing linear_ranges in their descriptor can use this as
|
||||
* their map_voltage() callback.
|
||||
*/
|
||||
int regulator_map_voltage_linear_range(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
const struct regulator_linear_range *range;
|
||||
int ret = -EINVAL;
|
||||
int voltage, i;
|
||||
|
||||
if (!rdev->desc->n_linear_ranges) {
|
||||
BUG_ON(!rdev->desc->n_linear_ranges);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
|
||||
range = &rdev->desc->linear_ranges[i];
|
||||
|
||||
if (!(min_uV <= range->max_uV && max_uV >= range->min_uV))
|
||||
continue;
|
||||
|
||||
if (min_uV <= range->min_uV)
|
||||
min_uV = range->min_uV;
|
||||
|
||||
/* range->uV_step == 0 means fixed voltage range */
|
||||
if (range->uV_step == 0) {
|
||||
ret = 0;
|
||||
} else {
|
||||
ret = DIV_ROUND_UP(min_uV - range->min_uV,
|
||||
range->uV_step);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret += range->min_sel;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
if (i == rdev->desc->n_linear_ranges)
|
||||
return -EINVAL;
|
||||
|
||||
/* Map back into a voltage to verify we're still in bounds */
|
||||
voltage = rdev->desc->ops->list_voltage(rdev, ret);
|
||||
if (voltage < min_uV || voltage > max_uV)
|
||||
return -EINVAL;
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range);
|
||||
|
||||
static int _regulator_do_set_voltage(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
|
|
@ -3070,47 +2684,6 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_set_optimum_mode);
|
||||
|
||||
/**
|
||||
* regulator_set_bypass_regmap - Default set_bypass() using regmap
|
||||
*
|
||||
* @rdev: device to operate on.
|
||||
* @enable: state to set.
|
||||
*/
|
||||
int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable)
|
||||
{
|
||||
unsigned int val;
|
||||
|
||||
if (enable)
|
||||
val = rdev->desc->bypass_mask;
|
||||
else
|
||||
val = 0;
|
||||
|
||||
return regmap_update_bits(rdev->regmap, rdev->desc->bypass_reg,
|
||||
rdev->desc->bypass_mask, val);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap);
|
||||
|
||||
/**
|
||||
* regulator_get_bypass_regmap - Default get_bypass() using regmap
|
||||
*
|
||||
* @rdev: device to operate on.
|
||||
* @enable: current state.
|
||||
*/
|
||||
int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable)
|
||||
{
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(rdev->regmap, rdev->desc->bypass_reg, &val);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
|
||||
*enable = val & rdev->desc->bypass_mask;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_get_bypass_regmap);
|
||||
|
||||
/**
|
||||
* regulator_allow_bypass - allow the regulator to go into bypass mode
|
||||
*
|
||||
|
|
|
|||
|
|
@ -252,39 +252,12 @@ static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int da9034_map_ldo12_voltage(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
|
||||
int sel;
|
||||
|
||||
if (check_range(info, min_uV, max_uV)) {
|
||||
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
sel = DIV_ROUND_UP(min_uV - info->desc.min_uV, info->desc.uV_step);
|
||||
sel = (sel >= 20) ? sel - 12 : ((sel > 7) ? 8 : sel);
|
||||
|
||||
return sel;
|
||||
}
|
||||
|
||||
static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
|
||||
unsigned selector)
|
||||
{
|
||||
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
|
||||
int volt;
|
||||
|
||||
if (selector >= 8)
|
||||
volt = 2700000 + rdev->desc->uV_step * (selector - 8);
|
||||
else
|
||||
volt = rdev->desc->min_uV + rdev->desc->uV_step * selector;
|
||||
|
||||
if (volt > info->max_uV)
|
||||
return -EINVAL;
|
||||
|
||||
return volt;
|
||||
}
|
||||
static const struct regulator_linear_range da9034_ldo12_ranges[] = {
|
||||
{ .min_uV = 1700000, .max_uV = 2050000, .min_sel = 0, .max_sel = 7,
|
||||
.uV_step = 50000 },
|
||||
{ .min_uV = 2700000, .max_uV = 3050000, .min_sel = 8, .max_sel = 15,
|
||||
.uV_step = 50000 },
|
||||
};
|
||||
|
||||
static struct regulator_ops da903x_regulator_ldo_ops = {
|
||||
.set_voltage_sel = da903x_set_voltage_sel,
|
||||
|
|
@ -332,8 +305,8 @@ static struct regulator_ops da9034_regulator_dvc_ops = {
|
|||
static struct regulator_ops da9034_regulator_ldo12_ops = {
|
||||
.set_voltage_sel = da903x_set_voltage_sel,
|
||||
.get_voltage_sel = da903x_get_voltage_sel,
|
||||
.list_voltage = da9034_list_ldo12_voltage,
|
||||
.map_voltage = da9034_map_ldo12_voltage,
|
||||
.list_voltage = regulator_list_voltage_linear_range,
|
||||
.map_voltage = regulator_map_voltage_linear_range,
|
||||
.enable = da903x_enable,
|
||||
.disable = da903x_disable,
|
||||
.is_enabled = da903x_is_enabled,
|
||||
|
|
@ -476,6 +449,8 @@ static int da903x_regulator_probe(struct platform_device *pdev)
|
|||
if (ri->desc.id == DA9034_ID_LDO12) {
|
||||
ri->desc.ops = &da9034_regulator_ldo12_ops;
|
||||
ri->desc.n_voltages = 16;
|
||||
ri->desc.linear_ranges = da9034_ldo12_ranges;
|
||||
ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges);
|
||||
}
|
||||
|
||||
if (ri->desc.id == DA9030_ID_LDO14)
|
||||
|
|
|
|||
447
drivers/regulator/helpers.c
Normal file
447
drivers/regulator/helpers.c
Normal file
|
|
@ -0,0 +1,447 @@
|
|||
/*
|
||||
* helpers.c -- Voltage/Current Regulator framework helper functions.
|
||||
*
|
||||
* Copyright 2007, 2008 Wolfson Microelectronics PLC.
|
||||
* Copyright 2008 SlimLogic Ltd.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/regulator/driver.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
/**
|
||||
* regulator_is_enabled_regmap - standard is_enabled() for regmap users
|
||||
*
|
||||
* @rdev: regulator to operate on
|
||||
*
|
||||
* Regulators that use regmap for their register I/O can set the
|
||||
* enable_reg and enable_mask fields in their descriptor and then use
|
||||
* this as their is_enabled operation, saving some code.
|
||||
*/
|
||||
int regulator_is_enabled_regmap(struct regulator_dev *rdev)
|
||||
{
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
|
||||
if (rdev->desc->enable_is_inverted)
|
||||
return (val & rdev->desc->enable_mask) == 0;
|
||||
else
|
||||
return (val & rdev->desc->enable_mask) != 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap);
|
||||
|
||||
/**
|
||||
* regulator_enable_regmap - standard enable() for regmap users
|
||||
*
|
||||
* @rdev: regulator to operate on
|
||||
*
|
||||
* Regulators that use regmap for their register I/O can set the
|
||||
* enable_reg and enable_mask fields in their descriptor and then use
|
||||
* this as their enable() operation, saving some code.
|
||||
*/
|
||||
int regulator_enable_regmap(struct regulator_dev *rdev)
|
||||
{
|
||||
unsigned int val;
|
||||
|
||||
if (rdev->desc->enable_is_inverted)
|
||||
val = 0;
|
||||
else
|
||||
val = rdev->desc->enable_mask;
|
||||
|
||||
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
||||
rdev->desc->enable_mask, val);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_enable_regmap);
|
||||
|
||||
/**
|
||||
* regulator_disable_regmap - standard disable() for regmap users
|
||||
*
|
||||
* @rdev: regulator to operate on
|
||||
*
|
||||
* Regulators that use regmap for their register I/O can set the
|
||||
* enable_reg and enable_mask fields in their descriptor and then use
|
||||
* this as their disable() operation, saving some code.
|
||||
*/
|
||||
int regulator_disable_regmap(struct regulator_dev *rdev)
|
||||
{
|
||||
unsigned int val;
|
||||
|
||||
if (rdev->desc->enable_is_inverted)
|
||||
val = rdev->desc->enable_mask;
|
||||
else
|
||||
val = 0;
|
||||
|
||||
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
||||
rdev->desc->enable_mask, val);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_disable_regmap);
|
||||
|
||||
/**
|
||||
* regulator_get_voltage_sel_regmap - standard get_voltage_sel for regmap users
|
||||
*
|
||||
* @rdev: regulator to operate on
|
||||
*
|
||||
* Regulators that use regmap for their register I/O can set the
|
||||
* vsel_reg and vsel_mask fields in their descriptor and then use this
|
||||
* as their get_voltage_vsel operation, saving some code.
|
||||
*/
|
||||
int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev)
|
||||
{
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
|
||||
val &= rdev->desc->vsel_mask;
|
||||
val >>= ffs(rdev->desc->vsel_mask) - 1;
|
||||
|
||||
return val;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_get_voltage_sel_regmap);
|
||||
|
||||
/**
|
||||
* regulator_set_voltage_sel_regmap - standard set_voltage_sel for regmap users
|
||||
*
|
||||
* @rdev: regulator to operate on
|
||||
* @sel: Selector to set
|
||||
*
|
||||
* Regulators that use regmap for their register I/O can set the
|
||||
* vsel_reg and vsel_mask fields in their descriptor and then use this
|
||||
* as their set_voltage_vsel operation, saving some code.
|
||||
*/
|
||||
int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel)
|
||||
{
|
||||
int ret;
|
||||
|
||||
sel <<= ffs(rdev->desc->vsel_mask) - 1;
|
||||
|
||||
ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
|
||||
rdev->desc->vsel_mask, sel);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (rdev->desc->apply_bit)
|
||||
ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg,
|
||||
rdev->desc->apply_bit,
|
||||
rdev->desc->apply_bit);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_set_voltage_sel_regmap);
|
||||
|
||||
/**
|
||||
* regulator_map_voltage_iterate - map_voltage() based on list_voltage()
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers implementing set_voltage_sel() and list_voltage() can use
|
||||
* this as their map_voltage() operation. It will find a suitable
|
||||
* voltage by calling list_voltage() until it gets something in bounds
|
||||
* for the requested voltages.
|
||||
*/
|
||||
int regulator_map_voltage_iterate(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
int best_val = INT_MAX;
|
||||
int selector = 0;
|
||||
int i, ret;
|
||||
|
||||
/* Find the smallest voltage that falls within the specified
|
||||
* range.
|
||||
*/
|
||||
for (i = 0; i < rdev->desc->n_voltages; i++) {
|
||||
ret = rdev->desc->ops->list_voltage(rdev, i);
|
||||
if (ret < 0)
|
||||
continue;
|
||||
|
||||
if (ret < best_val && ret >= min_uV && ret <= max_uV) {
|
||||
best_val = ret;
|
||||
selector = i;
|
||||
}
|
||||
}
|
||||
|
||||
if (best_val != INT_MAX)
|
||||
return selector;
|
||||
else
|
||||
return -EINVAL;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_iterate);
|
||||
|
||||
/**
|
||||
* regulator_map_voltage_ascend - map_voltage() for ascendant voltage list
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers that have ascendant voltage list can use this as their
|
||||
* map_voltage() operation.
|
||||
*/
|
||||
int regulator_map_voltage_ascend(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
int i, ret;
|
||||
|
||||
for (i = 0; i < rdev->desc->n_voltages; i++) {
|
||||
ret = rdev->desc->ops->list_voltage(rdev, i);
|
||||
if (ret < 0)
|
||||
continue;
|
||||
|
||||
if (ret > max_uV)
|
||||
break;
|
||||
|
||||
if (ret >= min_uV && ret <= max_uV)
|
||||
return i;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_ascend);
|
||||
|
||||
/**
|
||||
* regulator_map_voltage_linear - map_voltage() for simple linear mappings
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers providing min_uV and uV_step in their regulator_desc can
|
||||
* use this as their map_voltage() operation.
|
||||
*/
|
||||
int regulator_map_voltage_linear(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
int ret, voltage;
|
||||
|
||||
/* Allow uV_step to be 0 for fixed voltage */
|
||||
if (rdev->desc->n_voltages == 1 && rdev->desc->uV_step == 0) {
|
||||
if (min_uV <= rdev->desc->min_uV && rdev->desc->min_uV <= max_uV)
|
||||
return 0;
|
||||
else
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (!rdev->desc->uV_step) {
|
||||
BUG_ON(!rdev->desc->uV_step);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (min_uV < rdev->desc->min_uV)
|
||||
min_uV = rdev->desc->min_uV;
|
||||
|
||||
ret = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret += rdev->desc->linear_min_sel;
|
||||
|
||||
/* Map back into a voltage to verify we're still in bounds */
|
||||
voltage = rdev->desc->ops->list_voltage(rdev, ret);
|
||||
if (voltage < min_uV || voltage > max_uV)
|
||||
return -EINVAL;
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_linear);
|
||||
|
||||
/**
|
||||
* regulator_map_voltage_linear - map_voltage() for multiple linear ranges
|
||||
*
|
||||
* @rdev: Regulator to operate on
|
||||
* @min_uV: Lower bound for voltage
|
||||
* @max_uV: Upper bound for voltage
|
||||
*
|
||||
* Drivers providing linear_ranges in their descriptor can use this as
|
||||
* their map_voltage() callback.
|
||||
*/
|
||||
int regulator_map_voltage_linear_range(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
const struct regulator_linear_range *range;
|
||||
int ret = -EINVAL;
|
||||
int voltage, i;
|
||||
|
||||
if (!rdev->desc->n_linear_ranges) {
|
||||
BUG_ON(!rdev->desc->n_linear_ranges);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
|
||||
range = &rdev->desc->linear_ranges[i];
|
||||
|
||||
if (!(min_uV <= range->max_uV && max_uV >= range->min_uV))
|
||||
continue;
|
||||
|
||||
if (min_uV <= range->min_uV)
|
||||
min_uV = range->min_uV;
|
||||
|
||||
/* range->uV_step == 0 means fixed voltage range */
|
||||
if (range->uV_step == 0) {
|
||||
ret = 0;
|
||||
} else {
|
||||
ret = DIV_ROUND_UP(min_uV - range->min_uV,
|
||||
range->uV_step);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret += range->min_sel;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
if (i == rdev->desc->n_linear_ranges)
|
||||
return -EINVAL;
|
||||
|
||||
/* Map back into a voltage to verify we're still in bounds */
|
||||
voltage = rdev->desc->ops->list_voltage(rdev, ret);
|
||||
if (voltage < min_uV || voltage > max_uV)
|
||||
return -EINVAL;
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range);
|
||||
|
||||
/**
|
||||
* regulator_list_voltage_linear - List voltages with simple calculation
|
||||
*
|
||||
* @rdev: Regulator device
|
||||
* @selector: Selector to convert into a voltage
|
||||
*
|
||||
* Regulators with a simple linear mapping between voltages and
|
||||
* selectors can set min_uV and uV_step in the regulator descriptor
|
||||
* and then use this function as their list_voltage() operation,
|
||||
*/
|
||||
int regulator_list_voltage_linear(struct regulator_dev *rdev,
|
||||
unsigned int selector)
|
||||
{
|
||||
if (selector >= rdev->desc->n_voltages)
|
||||
return -EINVAL;
|
||||
if (selector < rdev->desc->linear_min_sel)
|
||||
return 0;
|
||||
|
||||
selector -= rdev->desc->linear_min_sel;
|
||||
|
||||
return rdev->desc->min_uV + (rdev->desc->uV_step * selector);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_list_voltage_linear);
|
||||
|
||||
/**
|
||||
* regulator_list_voltage_linear_range - List voltages for linear ranges
|
||||
*
|
||||
* @rdev: Regulator device
|
||||
* @selector: Selector to convert into a voltage
|
||||
*
|
||||
* Regulators with a series of simple linear mappings between voltages
|
||||
* and selectors can set linear_ranges in the regulator descriptor and
|
||||
* then use this function as their list_voltage() operation,
|
||||
*/
|
||||
int regulator_list_voltage_linear_range(struct regulator_dev *rdev,
|
||||
unsigned int selector)
|
||||
{
|
||||
const struct regulator_linear_range *range;
|
||||
int i;
|
||||
|
||||
if (!rdev->desc->n_linear_ranges) {
|
||||
BUG_ON(!rdev->desc->n_linear_ranges);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
|
||||
range = &rdev->desc->linear_ranges[i];
|
||||
|
||||
if (!(selector >= range->min_sel &&
|
||||
selector <= range->max_sel))
|
||||
continue;
|
||||
|
||||
selector -= range->min_sel;
|
||||
|
||||
return range->min_uV + (range->uV_step * selector);
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_list_voltage_linear_range);
|
||||
|
||||
/**
|
||||
* regulator_list_voltage_table - List voltages with table based mapping
|
||||
*
|
||||
* @rdev: Regulator device
|
||||
* @selector: Selector to convert into a voltage
|
||||
*
|
||||
* Regulators with table based mapping between voltages and
|
||||
* selectors can set volt_table in the regulator descriptor
|
||||
* and then use this function as their list_voltage() operation.
|
||||
*/
|
||||
int regulator_list_voltage_table(struct regulator_dev *rdev,
|
||||
unsigned int selector)
|
||||
{
|
||||
if (!rdev->desc->volt_table) {
|
||||
BUG_ON(!rdev->desc->volt_table);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (selector >= rdev->desc->n_voltages)
|
||||
return -EINVAL;
|
||||
|
||||
return rdev->desc->volt_table[selector];
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_list_voltage_table);
|
||||
|
||||
/**
|
||||
* regulator_set_bypass_regmap - Default set_bypass() using regmap
|
||||
*
|
||||
* @rdev: device to operate on.
|
||||
* @enable: state to set.
|
||||
*/
|
||||
int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable)
|
||||
{
|
||||
unsigned int val;
|
||||
|
||||
if (enable)
|
||||
val = rdev->desc->bypass_mask;
|
||||
else
|
||||
val = 0;
|
||||
|
||||
return regmap_update_bits(rdev->regmap, rdev->desc->bypass_reg,
|
||||
rdev->desc->bypass_mask, val);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap);
|
||||
|
||||
/**
|
||||
* regulator_get_bypass_regmap - Default get_bypass() using regmap
|
||||
*
|
||||
* @rdev: device to operate on.
|
||||
* @enable: current state.
|
||||
*/
|
||||
int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable)
|
||||
{
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(rdev->regmap, rdev->desc->bypass_reg, &val);
|
||||
if (ret != 0)
|
||||
return ret;
|
||||
|
||||
*enable = val & rdev->desc->bypass_mask;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_get_bypass_regmap);
|
||||
Loading…
Reference in New Issue
Block a user