regulator: ab8500: Added get_optimum_mode on regulators with idle mode
With this change, Vtvout, Vintcore12, Vaux1, 2 and 3 regulators support DRMS (Dynamic Regulator Mode Switching) which will dynamically handle requests for max current consumption from several consumers and select a suitable regulator mode. Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Mattias WALLIN <mattias.wallin@stericsson.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>hifive-unleashed-5.1
Bengt Jonsson
Mark Brown
parent
bd28a15733
commit
7ce4669c8f
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@ -31,6 +31,7 @@
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* @desc: regulator description
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* @regulator_dev: regulator device
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* @is_enabled: status of regulator (on/off)
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* @load_lp_uA: maximum load in idle (low power) mode
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* @update_bank: bank to control on/off
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* @update_reg: register to control on/off
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* @update_mask: mask to enable/disable and set mode of regulator
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@ -48,6 +49,7 @@ struct ab8500_regulator_info {
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struct regulator_desc desc;
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struct regulator_dev *regulator;
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bool is_enabled;
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int load_lp_uA;
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u8 update_bank;
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u8 update_reg;
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u8 update_mask;
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@ -156,6 +158,27 @@ static int ab8500_regulator_disable(struct regulator_dev *rdev)
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return ret;
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}
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static unsigned int ab8500_regulator_get_optimum_mode(
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struct regulator_dev *rdev, int input_uV,
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int output_uV, int load_uA)
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{
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unsigned int mode;
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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if (load_uA <= info->load_lp_uA)
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mode = REGULATOR_MODE_IDLE;
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else
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mode = REGULATOR_MODE_NORMAL;
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return mode;
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}
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static int ab8500_regulator_set_mode(struct regulator_dev *rdev,
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unsigned int mode)
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{
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@ -186,6 +209,12 @@ static int ab8500_regulator_set_mode(struct regulator_dev *rdev,
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if (ret < 0)
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dev_err(rdev_get_dev(rdev),
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"couldn't set regulator mode\n");
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dev_vdbg(rdev_get_dev(rdev),
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"%s-set_mode (bank, reg, mask, value): "
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"0x%x, 0x%x, 0x%x, 0x%x\n",
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info->desc.name, info->update_bank, info->update_reg,
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info->update_mask, info->update_val);
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}
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return ret;
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@ -313,23 +342,37 @@ static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
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return info->delay;
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}
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static struct regulator_ops ab8500_regulator_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.set_mode = ab8500_regulator_set_mode,
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.get_mode = ab8500_regulator_get_mode,
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.is_enabled = ab8500_regulator_is_enabled,
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.get_voltage_sel = ab8500_regulator_get_voltage_sel,
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.set_voltage_sel = ab8500_regulator_set_voltage_sel,
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.list_voltage = regulator_list_voltage_table,
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.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
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static struct regulator_ops ab8500_regulator_volt_mode_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.is_enabled = ab8500_regulator_is_enabled,
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.get_optimum_mode = ab8500_regulator_get_optimum_mode,
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.set_mode = ab8500_regulator_set_mode,
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.get_mode = ab8500_regulator_get_mode,
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.get_voltage_sel = ab8500_regulator_get_voltage_sel,
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.set_voltage_sel = ab8500_regulator_set_voltage_sel,
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.list_voltage = regulator_list_voltage_table,
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.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
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};
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static struct regulator_ops ab8500_regulator_fixed_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.is_enabled = ab8500_regulator_is_enabled,
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.list_voltage = regulator_list_voltage_linear,
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static struct regulator_ops ab8500_regulator_mode_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.is_enabled = ab8500_regulator_is_enabled,
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.get_optimum_mode = ab8500_regulator_get_optimum_mode,
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.set_mode = ab8500_regulator_set_mode,
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.get_mode = ab8500_regulator_get_mode,
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.get_voltage_sel = ab8500_regulator_get_voltage_sel,
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.list_voltage = regulator_list_voltage_table,
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.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
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};
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static struct regulator_ops ab8500_regulator_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.is_enabled = ab8500_regulator_is_enabled,
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.get_voltage_sel = ab8500_regulator_get_voltage_sel,
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.list_voltage = regulator_list_voltage_table,
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};
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static struct ab8500_regulator_info
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@ -343,13 +386,14 @@ static struct ab8500_regulator_info
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[AB8500_LDO_AUX1] = {
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.desc = {
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.name = "LDO-AUX1",
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.ops = &ab8500_regulator_ops,
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.ops = &ab8500_regulator_volt_mode_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUX1,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
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.volt_table = ldo_vauxn_voltages,
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},
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.load_lp_uA = 5000,
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.update_bank = 0x04,
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.update_reg = 0x09,
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.update_mask = 0x03,
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@ -363,13 +407,14 @@ static struct ab8500_regulator_info
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[AB8500_LDO_AUX2] = {
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.desc = {
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.name = "LDO-AUX2",
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.ops = &ab8500_regulator_ops,
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.ops = &ab8500_regulator_volt_mode_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUX2,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
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.volt_table = ldo_vauxn_voltages,
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},
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.load_lp_uA = 5000,
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.update_bank = 0x04,
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.update_reg = 0x09,
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.update_mask = 0x0c,
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@ -383,13 +428,14 @@ static struct ab8500_regulator_info
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[AB8500_LDO_AUX3] = {
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.desc = {
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.name = "LDO-AUX3",
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.ops = &ab8500_regulator_ops,
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.ops = &ab8500_regulator_volt_mode_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUX3,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
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.volt_table = ldo_vaux3_voltages,
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},
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.load_lp_uA = 5000,
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.update_bank = 0x04,
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.update_reg = 0x0a,
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.update_mask = 0x03,
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@ -403,13 +449,14 @@ static struct ab8500_regulator_info
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[AB8500_LDO_INTCORE] = {
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.desc = {
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.name = "LDO-INTCORE",
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.ops = &ab8500_regulator_ops,
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.ops = &ab8500_regulator_volt_mode_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_INTCORE,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vintcore_voltages),
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.volt_table = ldo_vintcore_voltages,
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},
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.load_lp_uA = 5000,
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.update_bank = 0x03,
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.update_reg = 0x80,
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.update_mask = 0x44,
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@ -430,7 +477,7 @@ static struct ab8500_regulator_info
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[AB8500_LDO_TVOUT] = {
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.desc = {
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.name = "LDO-TVOUT",
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.ops = &ab8500_regulator_fixed_ops,
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.ops = &ab8500_regulator_mode_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_TVOUT,
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.owner = THIS_MODULE,
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@ -439,10 +486,13 @@ static struct ab8500_regulator_info
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.enable_time = 10000,
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},
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.delay = 10000,
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.load_lp_uA = 1000,
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.update_bank = 0x03,
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.update_reg = 0x80,
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.update_mask = 0x82,
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.update_val = 0x02,
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.update_val_idle = 0x82,
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.update_val_normal = 0x02,
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},
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[AB8500_LDO_USB] = {
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.desc = {
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@ -458,10 +508,14 @@ static struct ab8500_regulator_info
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.update_reg = 0x82,
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.update_mask = 0x03,
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},
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/*
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* Regulators with fixed voltage and normal mode
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*/
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[AB8500_LDO_AUDIO] = {
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.desc = {
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.name = "LDO-AUDIO",
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.ops = &ab8500_regulator_fixed_ops,
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUDIO,
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.owner = THIS_MODULE,
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@ -476,7 +530,7 @@ static struct ab8500_regulator_info
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[AB8500_LDO_ANAMIC1] = {
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.desc = {
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.name = "LDO-ANAMIC1",
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.ops = &ab8500_regulator_fixed_ops,
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_ANAMIC1,
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.owner = THIS_MODULE,
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@ -491,7 +545,7 @@ static struct ab8500_regulator_info
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[AB8500_LDO_ANAMIC2] = {
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.desc = {
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.name = "LDO-ANAMIC2",
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.ops = &ab8500_regulator_fixed_ops,
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_ANAMIC2,
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.owner = THIS_MODULE,
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@ -506,7 +560,7 @@ static struct ab8500_regulator_info
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[AB8500_LDO_DMIC] = {
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.desc = {
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.name = "LDO-DMIC",
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.ops = &ab8500_regulator_fixed_ops,
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_DMIC,
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.owner = THIS_MODULE,
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@ -518,20 +572,27 @@ static struct ab8500_regulator_info
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.update_mask = 0x04,
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.update_val = 0x04,
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},
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/*
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* Regulators with fixed voltage and normal/idle modes
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*/
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[AB8500_LDO_ANA] = {
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.desc = {
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.name = "LDO-ANA",
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.ops = &ab8500_regulator_fixed_ops,
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.ops = &ab8500_regulator_mode_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_ANA,
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.owner = THIS_MODULE,
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.n_voltages = 1,
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.min_uV = 1200000,
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},
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.load_lp_uA = 1000,
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.update_bank = 0x04,
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.update_reg = 0x06,
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.update_mask = 0x0c,
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.update_val = 0x04,
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.update_val_idle = 0x0c,
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.update_val_normal = 0x04,
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},
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