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>alistair/sunxi64-5.4-dsi
Raag Jadav
Mark Brown
parent
81eeb0a35c
commit
955741a512
|
|
@ -19,6 +19,7 @@
|
|||
#include <linux/power_supply.h>
|
||||
#include <linux/regulator/of_regulator.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <dt-bindings/regulator/active-semi,8865-regulator.h>
|
||||
|
||||
/*
|
||||
* ACT8600 Global Register Map.
|
||||
|
|
@ -90,23 +91,31 @@
|
|||
*/
|
||||
#define ACT8865_SYS_MODE 0x00
|
||||
#define ACT8865_SYS_CTRL 0x01
|
||||
#define ACT8865_SYS_UNLK_REGS 0x0b
|
||||
#define ACT8865_DCDC1_VSET1 0x20
|
||||
#define ACT8865_DCDC1_VSET2 0x21
|
||||
#define ACT8865_DCDC1_CTRL 0x22
|
||||
#define ACT8865_DCDC1_SUS 0x24
|
||||
#define ACT8865_DCDC2_VSET1 0x30
|
||||
#define ACT8865_DCDC2_VSET2 0x31
|
||||
#define ACT8865_DCDC2_CTRL 0x32
|
||||
#define ACT8865_DCDC2_SUS 0x34
|
||||
#define ACT8865_DCDC3_VSET1 0x40
|
||||
#define ACT8865_DCDC3_VSET2 0x41
|
||||
#define ACT8865_DCDC3_CTRL 0x42
|
||||
#define ACT8865_DCDC3_SUS 0x44
|
||||
#define ACT8865_LDO1_VSET 0x50
|
||||
#define ACT8865_LDO1_CTRL 0x51
|
||||
#define ACT8865_LDO1_SUS 0x52
|
||||
#define ACT8865_LDO2_VSET 0x54
|
||||
#define ACT8865_LDO2_CTRL 0x55
|
||||
#define ACT8865_LDO2_SUS 0x56
|
||||
#define ACT8865_LDO3_VSET 0x60
|
||||
#define ACT8865_LDO3_CTRL 0x61
|
||||
#define ACT8865_LDO3_SUS 0x62
|
||||
#define ACT8865_LDO4_VSET 0x64
|
||||
#define ACT8865_LDO4_CTRL 0x65
|
||||
#define ACT8865_LDO4_SUS 0x66
|
||||
#define ACT8865_MSTROFF 0x20
|
||||
|
||||
/*
|
||||
|
|
@ -225,6 +234,171 @@ static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
|
|||
REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
|
||||
};
|
||||
|
||||
static int act8865_set_suspend_state(struct regulator_dev *rdev, bool enable)
|
||||
{
|
||||
struct regmap *regmap = rdev->regmap;
|
||||
int id = rdev->desc->id, reg, val;
|
||||
|
||||
switch (id) {
|
||||
case ACT8865_ID_DCDC1:
|
||||
reg = ACT8865_DCDC1_SUS;
|
||||
val = 0xa8;
|
||||
break;
|
||||
case ACT8865_ID_DCDC2:
|
||||
reg = ACT8865_DCDC2_SUS;
|
||||
val = 0xa8;
|
||||
break;
|
||||
case ACT8865_ID_DCDC3:
|
||||
reg = ACT8865_DCDC3_SUS;
|
||||
val = 0xa8;
|
||||
break;
|
||||
case ACT8865_ID_LDO1:
|
||||
reg = ACT8865_LDO1_SUS;
|
||||
val = 0xe8;
|
||||
break;
|
||||
case ACT8865_ID_LDO2:
|
||||
reg = ACT8865_LDO2_SUS;
|
||||
val = 0xe8;
|
||||
break;
|
||||
case ACT8865_ID_LDO3:
|
||||
reg = ACT8865_LDO3_SUS;
|
||||
val = 0xe8;
|
||||
break;
|
||||
case ACT8865_ID_LDO4:
|
||||
reg = ACT8865_LDO4_SUS;
|
||||
val = 0xe8;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (enable)
|
||||
val |= BIT(4);
|
||||
|
||||
/*
|
||||
* Ask the PMIC to enable/disable this output when entering hibernate
|
||||
* mode.
|
||||
*/
|
||||
return regmap_write(regmap, reg, val);
|
||||
}
|
||||
|
||||
static int act8865_set_suspend_enable(struct regulator_dev *rdev)
|
||||
{
|
||||
return act8865_set_suspend_state(rdev, true);
|
||||
}
|
||||
|
||||
static int act8865_set_suspend_disable(struct regulator_dev *rdev)
|
||||
{
|
||||
return act8865_set_suspend_state(rdev, false);
|
||||
}
|
||||
|
||||
static unsigned int act8865_of_map_mode(unsigned int mode)
|
||||
{
|
||||
switch (mode) {
|
||||
case ACT8865_REGULATOR_MODE_FIXED:
|
||||
return REGULATOR_MODE_FAST;
|
||||
case ACT8865_REGULATOR_MODE_NORMAL:
|
||||
return REGULATOR_MODE_NORMAL;
|
||||
case ACT8865_REGULATOR_MODE_LOWPOWER:
|
||||
return REGULATOR_MODE_STANDBY;
|
||||
default:
|
||||
return REGULATOR_MODE_INVALID;
|
||||
}
|
||||
}
|
||||
|
||||
static int act8865_set_mode(struct regulator_dev *rdev, unsigned int mode)
|
||||
{
|
||||
struct regmap *regmap = rdev->regmap;
|
||||
int id = rdev_get_id(rdev);
|
||||
int reg, val = 0;
|
||||
|
||||
switch (id) {
|
||||
case ACT8865_ID_DCDC1:
|
||||
reg = ACT8865_DCDC1_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_DCDC2:
|
||||
reg = ACT8865_DCDC2_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_DCDC3:
|
||||
reg = ACT8865_DCDC3_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO1:
|
||||
reg = ACT8865_LDO1_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO2:
|
||||
reg = ACT8865_LDO2_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO3:
|
||||
reg = ACT8865_LDO3_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO4:
|
||||
reg = ACT8865_LDO4_CTRL;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
switch (mode) {
|
||||
case REGULATOR_MODE_FAST:
|
||||
case REGULATOR_MODE_NORMAL:
|
||||
if (id <= ACT8865_ID_DCDC3)
|
||||
val = BIT(5);
|
||||
break;
|
||||
case REGULATOR_MODE_STANDBY:
|
||||
if (id > ACT8865_ID_DCDC3)
|
||||
val = BIT(5);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return regmap_update_bits(regmap, reg, BIT(5), val);
|
||||
}
|
||||
|
||||
static unsigned int act8865_get_mode(struct regulator_dev *rdev)
|
||||
{
|
||||
struct regmap *regmap = rdev->regmap;
|
||||
int id = rdev_get_id(rdev);
|
||||
int reg, ret, val = 0;
|
||||
|
||||
switch (id) {
|
||||
case ACT8865_ID_DCDC1:
|
||||
reg = ACT8865_DCDC1_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_DCDC2:
|
||||
reg = ACT8865_DCDC2_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_DCDC3:
|
||||
reg = ACT8865_DCDC3_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO1:
|
||||
reg = ACT8865_LDO1_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO2:
|
||||
reg = ACT8865_LDO2_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO3:
|
||||
reg = ACT8865_LDO3_CTRL;
|
||||
break;
|
||||
case ACT8865_ID_LDO4:
|
||||
reg = ACT8865_LDO4_CTRL;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = regmap_read(regmap, reg, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (id <= ACT8865_ID_DCDC3 && (val & BIT(5)))
|
||||
return REGULATOR_MODE_FAST;
|
||||
else if (id > ACT8865_ID_DCDC3 && !(val & BIT(5)))
|
||||
return REGULATOR_MODE_NORMAL;
|
||||
else
|
||||
return REGULATOR_MODE_STANDBY;
|
||||
}
|
||||
|
||||
static const struct regulator_ops act8865_ops = {
|
||||
.list_voltage = regulator_list_voltage_linear_range,
|
||||
.map_voltage = regulator_map_voltage_linear_range,
|
||||
|
|
@ -232,7 +406,11 @@ static const struct regulator_ops act8865_ops = {
|
|||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.set_mode = act8865_set_mode,
|
||||
.get_mode = act8865_get_mode,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.set_suspend_enable = act8865_set_suspend_enable,
|
||||
.set_suspend_disable = act8865_set_suspend_disable,
|
||||
};
|
||||
|
||||
static const struct regulator_ops act8865_ldo_ops = {
|
||||
|
|
@ -242,7 +420,11 @@ static const struct regulator_ops act8865_ldo_ops = {
|
|||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.set_mode = act8865_set_mode,
|
||||
.get_mode = act8865_get_mode,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.set_suspend_enable = act8865_set_suspend_enable,
|
||||
.set_suspend_disable = act8865_set_suspend_disable,
|
||||
.set_pull_down = regulator_set_pull_down_regmap,
|
||||
};
|
||||
|
||||
|
|
@ -256,6 +438,7 @@ static const struct regulator_ops act8865_fixed_ldo_ops = {
|
|||
[_family##_ID_##_id] = { \
|
||||
.name = _name, \
|
||||
.of_match = of_match_ptr(_name), \
|
||||
.of_map_mode = act8865_of_map_mode, \
|
||||
.regulators_node = of_match_ptr("regulators"), \
|
||||
.supply_name = _supply, \
|
||||
.id = _family##_ID_##_id, \
|
||||
|
|
@ -590,7 +773,9 @@ static int act8865_pmic_probe(struct i2c_client *client,
|
|||
|
||||
i2c_set_clientdata(client, act8865);
|
||||
|
||||
return 0;
|
||||
/* Unlock expert registers for ACT8865. */
|
||||
return type != ACT8865 ? 0 : regmap_write(act8865->regmap,
|
||||
ACT8865_SYS_UNLK_REGS, 0xef);
|
||||
}
|
||||
|
||||
static const struct i2c_device_id act8865_ids[] = {
|
||||
|
|
|
|||
Loading…
Reference in New Issue