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linux/drivers/regulator/act8865-regulator.c
Douglas Anderson 259b93b21a
regulator: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in 4.14 
Probing of regulators can be a slow operation and can contribute to
slower boot times. This is especially true if a regulator is turned on
at probe time (with regulator-boot-on or regulator-always-on) and the
regulator requires delays (off-on-time, ramp time, etc).

While the overall kernel is not ready to switch to async probe by
default, as per the discussion on the mailing lists [1] it is believed
that the regulator subsystem is in good shape and we can move
regulator drivers over wholesale. There is no way to just magically
opt in all regulators (regulators are just normal drivers like
platform_driver), so we set PROBE_PREFER_ASYNCHRONOUS for all
regulators found in 'drivers/regulator' individually.

Given the number of drivers touched and the impossibility to test this
ahead of time, it wouldn't be shocking at all if this caused a
regression for someone. If there is a regression caused by this patch,
it's likely to be one of the cases talked about in [1]. As a "quick
fix", drivers involved in the regression could be fixed by changing
them to PROBE_FORCE_SYNCHRONOUS. That being said, the correct fix
would be to directly fix the problem that caused the issue with async
probe.

The approach here follows a similar approach that was used for the mmc
subsystem several years ago [2]. In fact, I ran nearly the same python
script to auto-generate the changes. The only thing I changed was to
search for "i2c_driver", "spmi_driver", and "spi_driver" in addition
to "platform_driver".

[1] https://lore.kernel.org/r/06db017f-e985-4434-8d1d-02ca2100cca0@sirena.org.uk
[2] https://lore.kernel.org/r/20200903232441.2694866-1-dianders@chromium.org/

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20230316125351.1.I2a4677392a38db5758dee0788b2cea5872562a82@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-03-20 13:11:25 +00:00

803 lines
22 KiB
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Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
*
* http://www.active-semi.com/products/power-management-units/act88xx/
*
* Copyright (C) 2013 Atmel Corporation
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/act8865.h>
#include <linux/of.h>
#include <linux/of_device.h>
#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.
*/
#define ACT8600_SYS_MODE 0x00
#define ACT8600_SYS_CTRL 0x01
#define ACT8600_DCDC1_VSET 0x10
#define ACT8600_DCDC1_CTRL 0x12
#define ACT8600_DCDC2_VSET 0x20
#define ACT8600_DCDC2_CTRL 0x22
#define ACT8600_DCDC3_VSET 0x30
#define ACT8600_DCDC3_CTRL 0x32
#define ACT8600_SUDCDC4_VSET 0x40
#define ACT8600_SUDCDC4_CTRL 0x41
#define ACT8600_LDO5_VSET 0x50
#define ACT8600_LDO5_CTRL 0x51
#define ACT8600_LDO6_VSET 0x60
#define ACT8600_LDO6_CTRL 0x61
#define ACT8600_LDO7_VSET 0x70
#define ACT8600_LDO7_CTRL 0x71
#define ACT8600_LDO8_VSET 0x80
#define ACT8600_LDO8_CTRL 0x81
#define ACT8600_LDO910_CTRL 0x91
#define ACT8600_APCH0 0xA1
#define ACT8600_APCH1 0xA8
#define ACT8600_APCH2 0xA9
#define ACT8600_APCH_STAT 0xAA
#define ACT8600_OTG0 0xB0
#define ACT8600_OTG1 0xB2
/*
* ACT8846 Global Register Map.
*/
#define ACT8846_SYS0 0x00
#define ACT8846_SYS1 0x01
#define ACT8846_REG1_VSET 0x10
#define ACT8846_REG1_CTRL 0x12
#define ACT8846_REG2_VSET0 0x20
#define ACT8846_REG2_VSET1 0x21
#define ACT8846_REG2_CTRL 0x22
#define ACT8846_REG3_VSET0 0x30
#define ACT8846_REG3_VSET1 0x31
#define ACT8846_REG3_CTRL 0x32
#define ACT8846_REG4_VSET0 0x40
#define ACT8846_REG4_VSET1 0x41
#define ACT8846_REG4_CTRL 0x42
#define ACT8846_REG5_VSET 0x50
#define ACT8846_REG5_CTRL 0x51
#define ACT8846_REG6_VSET 0x58
#define ACT8846_REG6_CTRL 0x59
#define ACT8846_REG7_VSET 0x60
#define ACT8846_REG7_CTRL 0x61
#define ACT8846_REG8_VSET 0x68
#define ACT8846_REG8_CTRL 0x69
#define ACT8846_REG9_VSET 0x70
#define ACT8846_REG9_CTRL 0x71
#define ACT8846_REG10_VSET 0x80
#define ACT8846_REG10_CTRL 0x81
#define ACT8846_REG11_VSET 0x90
#define ACT8846_REG11_CTRL 0x91
#define ACT8846_REG12_VSET 0xa0
#define ACT8846_REG12_CTRL 0xa1
#define ACT8846_REG13_CTRL 0xb1
#define ACT8846_GLB_OFF_CTRL 0xc3
#define ACT8846_OFF_SYSMASK 0x18
/*
* ACT8865 Global Register Map.
*/
#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
/*
* Field Definitions.
*/
#define ACT8865_ENA 0x80 /* ON - [7] */
#define ACT8865_DIS 0x40 /* DIS - [6] */
#define ACT8865_VSEL_MASK 0x3F /* VSET - [5:0] */
#define ACT8600_LDO10_ENA 0x40 /* ON - [6] */
#define ACT8600_SUDCDC_VSEL_MASK 0xFF /* SUDCDC VSET - [7:0] */
#define ACT8600_APCH_CHG_ACIN BIT(7)
#define ACT8600_APCH_CHG_USB BIT(6)
#define ACT8600_APCH_CSTATE0 BIT(5)
#define ACT8600_APCH_CSTATE1 BIT(4)
/*
* ACT8865 voltage number
*/
#define ACT8865_VOLTAGE_NUM 64
#define ACT8600_SUDCDC_VOLTAGE_NUM 256
struct act8865 {
struct regmap *regmap;
int off_reg;
int off_mask;
};
static const struct regmap_range act8600_reg_ranges[] = {
regmap_reg_range(0x00, 0x01),
regmap_reg_range(0x10, 0x10),
regmap_reg_range(0x12, 0x12),
regmap_reg_range(0x20, 0x20),
regmap_reg_range(0x22, 0x22),
regmap_reg_range(0x30, 0x30),
regmap_reg_range(0x32, 0x32),
regmap_reg_range(0x40, 0x41),
regmap_reg_range(0x50, 0x51),
regmap_reg_range(0x60, 0x61),
regmap_reg_range(0x70, 0x71),
regmap_reg_range(0x80, 0x81),
regmap_reg_range(0x91, 0x91),
regmap_reg_range(0xA1, 0xA1),
regmap_reg_range(0xA8, 0xAA),
regmap_reg_range(0xB0, 0xB0),
regmap_reg_range(0xB2, 0xB2),
regmap_reg_range(0xC1, 0xC1),
};
static const struct regmap_range act8600_reg_ro_ranges[] = {
regmap_reg_range(0xAA, 0xAA),
regmap_reg_range(0xC1, 0xC1),
};
static const struct regmap_range act8600_reg_volatile_ranges[] = {
regmap_reg_range(0x00, 0x01),
regmap_reg_range(0x12, 0x12),
regmap_reg_range(0x22, 0x22),
regmap_reg_range(0x32, 0x32),
regmap_reg_range(0x41, 0x41),
regmap_reg_range(0x51, 0x51),
regmap_reg_range(0x61, 0x61),
regmap_reg_range(0x71, 0x71),
regmap_reg_range(0x81, 0x81),
regmap_reg_range(0xA8, 0xA8),
regmap_reg_range(0xAA, 0xAA),
regmap_reg_range(0xB0, 0xB0),
regmap_reg_range(0xC1, 0xC1),
};
static const struct regmap_access_table act8600_write_ranges_table = {
.yes_ranges = act8600_reg_ranges,
.n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
.no_ranges = act8600_reg_ro_ranges,
.n_no_ranges = ARRAY_SIZE(act8600_reg_ro_ranges),
};
static const struct regmap_access_table act8600_read_ranges_table = {
.yes_ranges = act8600_reg_ranges,
.n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
};
static const struct regmap_access_table act8600_volatile_ranges_table = {
.yes_ranges = act8600_reg_volatile_ranges,
.n_yes_ranges = ARRAY_SIZE(act8600_reg_volatile_ranges),
};
static const struct regmap_config act8600_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0xFF,
.wr_table = &act8600_write_ranges_table,
.rd_table = &act8600_read_ranges_table,
.volatile_table = &act8600_volatile_ranges_table,
};
static const struct regmap_config act8865_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static const struct linear_range act8865_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
};
static const struct linear_range act8600_sudcdc_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000),
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,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.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 = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.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,
};
static const struct regulator_ops act8865_fixed_ldo_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
#define ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, _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, \
.type = REGULATOR_VOLTAGE, \
.ops = _ops, \
.n_voltages = ACT8865_VOLTAGE_NUM, \
.linear_ranges = act8865_voltage_ranges, \
.n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \
.vsel_reg = _family##_##_id##_##_vsel_reg, \
.vsel_mask = ACT8865_VSEL_MASK, \
.enable_reg = _family##_##_id##_CTRL, \
.enable_mask = ACT8865_ENA, \
.pull_down_reg = _family##_##_id##_CTRL, \
.pull_down_mask = ACT8865_DIS, \
.owner = THIS_MODULE, \
}
#define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \
ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ops)
#define ACT88xx_LDO(_name, _family, _id, _vsel_reg, _supply) \
ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ldo_ops)
static const struct regulator_desc act8600_regulators[] = {
ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
{
.name = "SUDCDC_REG4",
.of_match = of_match_ptr("SUDCDC_REG4"),
.regulators_node = of_match_ptr("regulators"),
.id = ACT8600_ID_SUDCDC4,
.ops = &act8865_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
.linear_ranges = act8600_sudcdc_voltage_ranges,
.n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
.vsel_reg = ACT8600_SUDCDC4_VSET,
.vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
.enable_reg = ACT8600_SUDCDC4_CTRL,
.enable_mask = ACT8865_ENA,
.owner = THIS_MODULE,
},
ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
{
.name = "LDO_REG9",
.of_match = of_match_ptr("LDO_REG9"),
.regulators_node = of_match_ptr("regulators"),
.id = ACT8600_ID_LDO9,
.ops = &act8865_fixed_ldo_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 1,
.fixed_uV = 3300000,
.enable_reg = ACT8600_LDO910_CTRL,
.enable_mask = ACT8865_ENA,
.owner = THIS_MODULE,
},
{
.name = "LDO_REG10",
.of_match = of_match_ptr("LDO_REG10"),
.regulators_node = of_match_ptr("regulators"),
.id = ACT8600_ID_LDO10,
.ops = &act8865_fixed_ldo_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 1,
.fixed_uV = 1200000,
.enable_reg = ACT8600_LDO910_CTRL,
.enable_mask = ACT8600_LDO10_ENA,
.owner = THIS_MODULE,
},
};
static const struct regulator_desc act8846_regulators[] = {
ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
};
static const struct regulator_desc act8865_regulators[] = {
ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
};
static const struct regulator_desc act8865_alt_regulators[] = {
ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),
ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
};
#ifdef CONFIG_OF
static const struct of_device_id act8865_dt_ids[] = {
{ .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
{ .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
{ .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
{ }
};
MODULE_DEVICE_TABLE(of, act8865_dt_ids);
#endif
static struct act8865_regulator_data *act8865_get_regulator_data(
int id, struct act8865_platform_data *pdata)
{
int i;
for (i = 0; i < pdata->num_regulators; i++) {
if (pdata->regulators[i].id == id)
return &pdata->regulators[i];
}
return NULL;
}
static struct i2c_client *act8865_i2c_client;
static void act8865_power_off(void)
{
struct act8865 *act8865;
act8865 = i2c_get_clientdata(act8865_i2c_client);
regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
while (1);
}
static int act8600_charger_get_status(struct regmap *map)
{
unsigned int val;
int ret;
u8 state0, state1;
ret = regmap_read(map, ACT8600_APCH_STAT, &val);
if (ret < 0)
return ret;
state0 = val & ACT8600_APCH_CSTATE0;
state1 = val & ACT8600_APCH_CSTATE1;
if (state0 && !state1)
return POWER_SUPPLY_STATUS_CHARGING;
if (!state0 && state1)
return POWER_SUPPLY_STATUS_NOT_CHARGING;
if (!state0 && !state1)
return POWER_SUPPLY_STATUS_DISCHARGING;
return POWER_SUPPLY_STATUS_UNKNOWN;
}
static int act8600_charger_get_property(struct power_supply *psy,
enum power_supply_property psp, union power_supply_propval *val)
{
struct regmap *map = power_supply_get_drvdata(psy);
int ret;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
ret = act8600_charger_get_status(map);
if (ret < 0)
return ret;
val->intval = ret;
break;
default:
return -EINVAL;
}
return 0;
}
static enum power_supply_property act8600_charger_properties[] = {
POWER_SUPPLY_PROP_STATUS,
};
static const struct power_supply_desc act8600_charger_desc = {
.name = "act8600-charger",
.type = POWER_SUPPLY_TYPE_BATTERY,
.properties = act8600_charger_properties,
.num_properties = ARRAY_SIZE(act8600_charger_properties),
.get_property = act8600_charger_get_property,
};
static int act8600_charger_probe(struct device *dev, struct regmap *regmap)
{
struct power_supply *charger;
struct power_supply_config cfg = {
.drv_data = regmap,
.of_node = dev->of_node,
};
charger = devm_power_supply_register(dev, &act8600_charger_desc, &cfg);
return PTR_ERR_OR_ZERO(charger);
}
static int act8865_pmic_probe(struct i2c_client *client)
{
const struct i2c_device_id *i2c_id = i2c_client_get_device_id(client);
const struct regulator_desc *regulators;
struct act8865_platform_data *pdata = NULL;
struct device *dev = &client->dev;
int i, ret, num_regulators;
struct act8865 *act8865;
const struct regmap_config *regmap_config;
unsigned long type;
int off_reg, off_mask;
int voltage_select = 0;
if (dev->of_node) {
const struct of_device_id *id;
id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
if (!id)
return -ENODEV;
type = (unsigned long) id->data;
voltage_select = !!of_get_property(dev->of_node,
"active-semi,vsel-high",
NULL);
} else {
type = i2c_id->driver_data;
pdata = dev_get_platdata(dev);
}
switch (type) {
case ACT8600:
regulators = act8600_regulators;
num_regulators = ARRAY_SIZE(act8600_regulators);
regmap_config = &act8600_regmap_config;
off_reg = -1;
off_mask = -1;
break;
case ACT8846:
regulators = act8846_regulators;
num_regulators = ARRAY_SIZE(act8846_regulators);
regmap_config = &act8865_regmap_config;
off_reg = ACT8846_GLB_OFF_CTRL;
off_mask = ACT8846_OFF_SYSMASK;
break;
case ACT8865:
if (voltage_select) {
regulators = act8865_alt_regulators;
num_regulators = ARRAY_SIZE(act8865_alt_regulators);
} else {
regulators = act8865_regulators;
num_regulators = ARRAY_SIZE(act8865_regulators);
}
regmap_config = &act8865_regmap_config;
off_reg = ACT8865_SYS_CTRL;
off_mask = ACT8865_MSTROFF;
break;
default:
dev_err(dev, "invalid device id %lu\n", type);
return -EINVAL;
}
act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
if (!act8865)
return -ENOMEM;
act8865->regmap = devm_regmap_init_i2c(client, regmap_config);
if (IS_ERR(act8865->regmap)) {
ret = PTR_ERR(act8865->regmap);
dev_err(dev, "Failed to allocate register map: %d\n", ret);
return ret;
}
if (of_device_is_system_power_controller(dev->of_node)) {
if (!pm_power_off && (off_reg > 0)) {
act8865_i2c_client = client;
act8865->off_reg = off_reg;
act8865->off_mask = off_mask;
pm_power_off = act8865_power_off;
} else {
dev_err(dev, "Failed to set poweroff capability, already defined\n");
}
}
/* Finally register devices */
for (i = 0; i < num_regulators; i++) {
const struct regulator_desc *desc = &regulators[i];
struct regulator_config config = { };
struct regulator_dev *rdev;
config.dev = dev;
config.driver_data = act8865;
config.regmap = act8865->regmap;
if (pdata) {
struct act8865_regulator_data *rdata;
rdata = act8865_get_regulator_data(desc->id, pdata);
if (rdata) {
config.init_data = rdata->init_data;
config.of_node = rdata->of_node;
}
}
rdev = devm_regulator_register(dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(dev, "failed to register %s\n", desc->name);
return PTR_ERR(rdev);
}
}
if (type == ACT8600) {
ret = act8600_charger_probe(dev, act8865->regmap);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "Failed to probe charger");
return ret;
}
}
i2c_set_clientdata(client, act8865);
/* 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[] = {
{ .name = "act8600", .driver_data = ACT8600 },
{ .name = "act8846", .driver_data = ACT8846 },
{ .name = "act8865", .driver_data = ACT8865 },
{ },
};
MODULE_DEVICE_TABLE(i2c, act8865_ids);
static struct i2c_driver act8865_pmic_driver = {
.driver = {
.name = "act8865",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe_new = act8865_pmic_probe,
.id_table = act8865_ids,
};
module_i2c_driver(act8865_pmic_driver);
MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
MODULE_LICENSE("GPL v2");
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