regulator: act8865: operating mode and suspend state support
Implement ->set_mode(), ->get_mode() and ->set_suspend_xx() hooks for act8865 with unlocked expert registers. Based on work done by Borris Brezillon on [1]. [1] https://www.spinics.net/lists/kernel/msg2942960.html Signed-off-by: Raag Jadav <raagjadav@gmail.com> Link: https://lore.kernel.org/r/1565721176-8955-2-git-send-email-raagjadav@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Raag Jadav
Mark Brown
parent
81eeb0a35c
commit
955741a512
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@ -19,6 +19,7 @@
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#include <linux/power_supply.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/regmap.h>
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#include <dt-bindings/regulator/active-semi,8865-regulator.h>
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/*
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* ACT8600 Global Register Map.
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@ -90,23 +91,31 @@
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*/
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#define ACT8865_SYS_MODE 0x00
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#define ACT8865_SYS_CTRL 0x01
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#define ACT8865_SYS_UNLK_REGS 0x0b
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#define ACT8865_DCDC1_VSET1 0x20
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#define ACT8865_DCDC1_VSET2 0x21
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#define ACT8865_DCDC1_CTRL 0x22
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#define ACT8865_DCDC1_SUS 0x24
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#define ACT8865_DCDC2_VSET1 0x30
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#define ACT8865_DCDC2_VSET2 0x31
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#define ACT8865_DCDC2_CTRL 0x32
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#define ACT8865_DCDC2_SUS 0x34
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#define ACT8865_DCDC3_VSET1 0x40
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#define ACT8865_DCDC3_VSET2 0x41
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#define ACT8865_DCDC3_CTRL 0x42
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#define ACT8865_DCDC3_SUS 0x44
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#define ACT8865_LDO1_VSET 0x50
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#define ACT8865_LDO1_CTRL 0x51
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#define ACT8865_LDO1_SUS 0x52
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#define ACT8865_LDO2_VSET 0x54
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#define ACT8865_LDO2_CTRL 0x55
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#define ACT8865_LDO2_SUS 0x56
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#define ACT8865_LDO3_VSET 0x60
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#define ACT8865_LDO3_CTRL 0x61
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#define ACT8865_LDO3_SUS 0x62
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#define ACT8865_LDO4_VSET 0x64
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#define ACT8865_LDO4_CTRL 0x65
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#define ACT8865_LDO4_SUS 0x66
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#define ACT8865_MSTROFF 0x20
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/*
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@ -225,6 +234,171 @@ static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
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REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
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};
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static int act8865_set_suspend_state(struct regulator_dev *rdev, bool enable)
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{
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struct regmap *regmap = rdev->regmap;
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int id = rdev->desc->id, reg, val;
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switch (id) {
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case ACT8865_ID_DCDC1:
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reg = ACT8865_DCDC1_SUS;
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val = 0xa8;
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break;
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case ACT8865_ID_DCDC2:
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reg = ACT8865_DCDC2_SUS;
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val = 0xa8;
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break;
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case ACT8865_ID_DCDC3:
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reg = ACT8865_DCDC3_SUS;
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val = 0xa8;
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break;
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case ACT8865_ID_LDO1:
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reg = ACT8865_LDO1_SUS;
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val = 0xe8;
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break;
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case ACT8865_ID_LDO2:
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reg = ACT8865_LDO2_SUS;
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val = 0xe8;
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break;
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case ACT8865_ID_LDO3:
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reg = ACT8865_LDO3_SUS;
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val = 0xe8;
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break;
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case ACT8865_ID_LDO4:
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reg = ACT8865_LDO4_SUS;
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val = 0xe8;
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break;
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default:
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return -EINVAL;
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}
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if (enable)
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val |= BIT(4);
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/*
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* Ask the PMIC to enable/disable this output when entering hibernate
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* mode.
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*/
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return regmap_write(regmap, reg, val);
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}
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static int act8865_set_suspend_enable(struct regulator_dev *rdev)
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{
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return act8865_set_suspend_state(rdev, true);
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}
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static int act8865_set_suspend_disable(struct regulator_dev *rdev)
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{
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return act8865_set_suspend_state(rdev, false);
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}
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static unsigned int act8865_of_map_mode(unsigned int mode)
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{
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switch (mode) {
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case ACT8865_REGULATOR_MODE_FIXED:
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return REGULATOR_MODE_FAST;
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case ACT8865_REGULATOR_MODE_NORMAL:
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return REGULATOR_MODE_NORMAL;
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case ACT8865_REGULATOR_MODE_LOWPOWER:
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return REGULATOR_MODE_STANDBY;
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default:
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return REGULATOR_MODE_INVALID;
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}
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}
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static int act8865_set_mode(struct regulator_dev *rdev, unsigned int mode)
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{
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struct regmap *regmap = rdev->regmap;
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int id = rdev_get_id(rdev);
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int reg, val = 0;
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switch (id) {
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case ACT8865_ID_DCDC1:
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reg = ACT8865_DCDC1_CTRL;
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break;
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case ACT8865_ID_DCDC2:
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reg = ACT8865_DCDC2_CTRL;
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break;
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case ACT8865_ID_DCDC3:
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reg = ACT8865_DCDC3_CTRL;
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break;
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case ACT8865_ID_LDO1:
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reg = ACT8865_LDO1_CTRL;
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break;
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case ACT8865_ID_LDO2:
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reg = ACT8865_LDO2_CTRL;
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break;
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case ACT8865_ID_LDO3:
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reg = ACT8865_LDO3_CTRL;
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break;
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case ACT8865_ID_LDO4:
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reg = ACT8865_LDO4_CTRL;
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break;
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default:
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return -EINVAL;
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}
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switch (mode) {
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case REGULATOR_MODE_FAST:
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case REGULATOR_MODE_NORMAL:
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if (id <= ACT8865_ID_DCDC3)
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val = BIT(5);
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break;
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case REGULATOR_MODE_STANDBY:
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if (id > ACT8865_ID_DCDC3)
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val = BIT(5);
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break;
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default:
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return -EINVAL;
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}
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return regmap_update_bits(regmap, reg, BIT(5), val);
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}
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static unsigned int act8865_get_mode(struct regulator_dev *rdev)
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{
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struct regmap *regmap = rdev->regmap;
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int id = rdev_get_id(rdev);
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int reg, ret, val = 0;
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switch (id) {
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case ACT8865_ID_DCDC1:
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reg = ACT8865_DCDC1_CTRL;
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break;
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case ACT8865_ID_DCDC2:
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reg = ACT8865_DCDC2_CTRL;
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break;
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case ACT8865_ID_DCDC3:
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reg = ACT8865_DCDC3_CTRL;
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break;
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case ACT8865_ID_LDO1:
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reg = ACT8865_LDO1_CTRL;
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break;
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case ACT8865_ID_LDO2:
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reg = ACT8865_LDO2_CTRL;
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break;
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case ACT8865_ID_LDO3:
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reg = ACT8865_LDO3_CTRL;
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break;
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case ACT8865_ID_LDO4:
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reg = ACT8865_LDO4_CTRL;
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break;
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default:
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return -EINVAL;
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}
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ret = regmap_read(regmap, reg, &val);
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if (ret)
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return ret;
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if (id <= ACT8865_ID_DCDC3 && (val & BIT(5)))
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return REGULATOR_MODE_FAST;
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else if (id > ACT8865_ID_DCDC3 && !(val & BIT(5)))
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return REGULATOR_MODE_NORMAL;
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else
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return REGULATOR_MODE_STANDBY;
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}
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static const struct regulator_ops act8865_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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@ -232,7 +406,11 @@ static const struct regulator_ops act8865_ops = {
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_mode = act8865_set_mode,
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.get_mode = act8865_get_mode,
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.is_enabled = regulator_is_enabled_regmap,
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.set_suspend_enable = act8865_set_suspend_enable,
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.set_suspend_disable = act8865_set_suspend_disable,
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};
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static const struct regulator_ops act8865_ldo_ops = {
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@ -242,7 +420,11 @@ static const struct regulator_ops act8865_ldo_ops = {
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_mode = act8865_set_mode,
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.get_mode = act8865_get_mode,
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.is_enabled = regulator_is_enabled_regmap,
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.set_suspend_enable = act8865_set_suspend_enable,
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.set_suspend_disable = act8865_set_suspend_disable,
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.set_pull_down = regulator_set_pull_down_regmap,
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};
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@ -256,6 +438,7 @@ static const struct regulator_ops act8865_fixed_ldo_ops = {
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[_family##_ID_##_id] = { \
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.name = _name, \
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.of_match = of_match_ptr(_name), \
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.of_map_mode = act8865_of_map_mode, \
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.regulators_node = of_match_ptr("regulators"), \
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.supply_name = _supply, \
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.id = _family##_ID_##_id, \
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@ -590,7 +773,9 @@ static int act8865_pmic_probe(struct i2c_client *client,
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i2c_set_clientdata(client, act8865);
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return 0;
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/* Unlock expert registers for ACT8865. */
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return type != ACT8865 ? 0 : regmap_write(act8865->regmap,
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ACT8865_SYS_UNLK_REGS, 0xef);
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}
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static const struct i2c_device_id act8865_ids[] = {
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