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linux/drivers/regulator/axp20x-regulator.c
Hans de Goede 636e2a39cf regulator: axp20x: Add support for the (external) drivebus regulator 
The axp20x pmics have 2 power inputs, one called ACIN which is intended
for to be supplied via a powerbarrel on the board and one called VBUS
which is intended to be supplied via an otg connector.

In the VBUS case the pmic needs to know if the board is supplying power
to the otg connector, because then it should not take any power from
its VBUS pin. The axp209 pmic has a N_VBUSEN input pin via which the
board can signal to the pmic whether the board is supplying power to the
otg connector or not.

On the axp221/axp223 this pin can alternatively be used as an output
which controls an external regulator which (optionally) supplies
power to the otg connector from the board. When the pin is used as
output it is called DRIVEVBUS in the datasheet.

This commit adds support for the DRIVEVBUS pin as an extra pmic
controlled regulator. Since this is optional a new x-powers,drivebus dt
property is added. When this is present the misc-control register is
written to change the N_VBUSEN input pin to DRIVEVBUS output pin mode and
the extra drivebus regulator is registered with the regulator subsystem.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-06-06 18:38:30 +01:00

549 lines
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/*
* AXP20x regulators driver.
*
* Copyright (C) 2013 Carlo Caione <carlo@caione.org>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of this
* archive for more details.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/axp20x.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#define AXP20X_IO_ENABLED 0x03
#define AXP20X_IO_DISABLED 0x07
#define AXP22X_IO_ENABLED 0x03
#define AXP22X_IO_DISABLED 0x04
#define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
#define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
#define AXP22X_WORKMODE_DCDCX_MASK(x) BIT(x)
#define AXP20X_FREQ_DCDC_MASK 0x0f
#define AXP22X_MISC_N_VBUSEN_FUNC BIT(4)
#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
_vmask, _ereg, _emask, _enable_val, _disable_val) \
[_family##_##_id] = { \
.name = (_match), \
.supply_name = (_supply), \
.of_match = of_match_ptr(_match), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.id = _family##_##_id, \
.n_voltages = (((_max) - (_min)) / (_step) + 1), \
.owner = THIS_MODULE, \
.min_uV = (_min) * 1000, \
.uV_step = (_step) * 1000, \
.vsel_reg = (_vreg), \
.vsel_mask = (_vmask), \
.enable_reg = (_ereg), \
.enable_mask = (_emask), \
.enable_val = (_enable_val), \
.disable_val = (_disable_val), \
.ops = &axp20x_ops, \
}
#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
_vmask, _ereg, _emask) \
[_family##_##_id] = { \
.name = (_match), \
.supply_name = (_supply), \
.of_match = of_match_ptr(_match), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.id = _family##_##_id, \
.n_voltages = (((_max) - (_min)) / (_step) + 1), \
.owner = THIS_MODULE, \
.min_uV = (_min) * 1000, \
.uV_step = (_step) * 1000, \
.vsel_reg = (_vreg), \
.vsel_mask = (_vmask), \
.enable_reg = (_ereg), \
.enable_mask = (_emask), \
.ops = &axp20x_ops, \
}
#define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask) \
[_family##_##_id] = { \
.name = (_match), \
.supply_name = (_supply), \
.of_match = of_match_ptr(_match), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.id = _family##_##_id, \
.owner = THIS_MODULE, \
.enable_reg = (_ereg), \
.enable_mask = (_emask), \
.ops = &axp20x_ops_sw, \
}
#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
[_family##_##_id] = { \
.name = (_match), \
.supply_name = (_supply), \
.of_match = of_match_ptr(_match), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.id = _family##_##_id, \
.n_voltages = 1, \
.owner = THIS_MODULE, \
.min_uV = (_volt) * 1000, \
.ops = &axp20x_ops_fixed \
}
#define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages, \
_vreg, _vmask, _ereg, _emask) \
[_family##_##_id] = { \
.name = (_match), \
.supply_name = (_supply), \
.of_match = of_match_ptr(_match), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.id = _family##_##_id, \
.n_voltages = (_n_voltages), \
.owner = THIS_MODULE, \
.vsel_reg = (_vreg), \
.vsel_mask = (_vmask), \
.enable_reg = (_ereg), \
.enable_mask = (_emask), \
.linear_ranges = (_ranges), \
.n_linear_ranges = ARRAY_SIZE(_ranges), \
.ops = &axp20x_ops_range, \
}
static struct regulator_ops axp20x_ops_fixed = {
.list_voltage = regulator_list_voltage_linear,
};
static struct regulator_ops axp20x_ops_range = {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static struct regulator_ops axp20x_ops = {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static struct regulator_ops axp20x_ops_sw = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
REGULATOR_LINEAR_RANGE(2500000, 0x9, 0x9, 0),
REGULATOR_LINEAR_RANGE(2700000, 0xa, 0xb, 100000),
REGULATOR_LINEAR_RANGE(3000000, 0xc, 0xf, 100000),
};
static const struct regulator_desc axp20x_regulators[] = {
AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
0x08),
AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
};
static const struct regulator_desc axp22x_regulators[] = {
AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
/* secondary switchable output of DCDC1 */
AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
BIT(7)),
/* LDO regulator internally chained to DCDC5 */
AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
/* Note the datasheet only guarantees reliable operation up to
* 3.3V, this needs to be enforced via dts provided constraints */
AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
/* Note the datasheet only guarantees reliable operation up to
* 3.3V, this needs to be enforced via dts provided constraints */
AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
};
static const struct regulator_desc axp22x_drivevbus_regulator = {
.name = "drivevbus",
.supply_name = "drivevbus",
.of_match = of_match_ptr("drivevbus"),
.regulators_node = of_match_ptr("regulators"),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = AXP20X_VBUS_IPSOUT_MGMT,
.enable_mask = BIT(2),
.ops = &axp20x_ops_sw,
};
static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
};
static const struct regulator_linear_range axp809_dldo1_ranges[] = {
REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
};
static const struct regulator_desc axp809_regulators[] = {
AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges,
57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1,
BIT(4)),
AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
/* secondary switchable output of DCDC1 */
AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
BIT(7)),
/* LDO regulator internally chained to DCDC5 */
AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp809_dldo1_ranges,
32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
BIT(3)),
AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3300, 100,
AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3300, 100,
AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
};
static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
{
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
u32 min, max, def, step;
switch (axp20x->variant) {
case AXP202_ID:
case AXP209_ID:
min = 750;
max = 1875;
def = 1500;
step = 75;
break;
case AXP221_ID:
case AXP223_ID:
case AXP809_ID:
min = 1800;
max = 4050;
def = 3000;
step = 150;
break;
default:
dev_err(&pdev->dev,
"Setting DCDC frequency for unsupported AXP variant\n");
return -EINVAL;
}
if (dcdcfreq == 0)
dcdcfreq = def;
if (dcdcfreq < min) {
dcdcfreq = min;
dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
min);
}
if (dcdcfreq > max) {
dcdcfreq = max;
dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
max);
}
dcdcfreq = (dcdcfreq - min) / step;
return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
AXP20X_FREQ_DCDC_MASK, dcdcfreq);
}
static int axp20x_regulator_parse_dt(struct platform_device *pdev)
{
struct device_node *np, *regulators;
int ret;
u32 dcdcfreq = 0;
np = of_node_get(pdev->dev.parent->of_node);
if (!np)
return 0;
regulators = of_get_child_by_name(np, "regulators");
if (!regulators) {
dev_warn(&pdev->dev, "regulators node not found\n");
} else {
of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
if (ret < 0) {
dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
return ret;
}
of_node_put(regulators);
}
return 0;
}
static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
{
struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
unsigned int mask;
switch (axp20x->variant) {
case AXP202_ID:
case AXP209_ID:
if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
return -EINVAL;
mask = AXP20X_WORKMODE_DCDC2_MASK;
if (id == AXP20X_DCDC3)
mask = AXP20X_WORKMODE_DCDC3_MASK;
workmode <<= ffs(mask) - 1;
break;
case AXP221_ID:
case AXP223_ID:
case AXP809_ID:
if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
return -EINVAL;
mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
workmode <<= id - AXP22X_DCDC1;
break;
default:
/* should not happen */
WARN_ON(1);
return -EINVAL;
}
return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
}
static int axp20x_regulator_probe(struct platform_device *pdev)
{
struct regulator_dev *rdev;
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
const struct regulator_desc *regulators;
struct regulator_config config = {
.dev = pdev->dev.parent,
.regmap = axp20x->regmap,
.driver_data = axp20x,
};
int ret, i, nregulators;
u32 workmode;
const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
bool drivevbus = false;
switch (axp20x->variant) {
case AXP202_ID:
case AXP209_ID:
regulators = axp20x_regulators;
nregulators = AXP20X_REG_ID_MAX;
break;
case AXP221_ID:
case AXP223_ID:
regulators = axp22x_regulators;
nregulators = AXP22X_REG_ID_MAX;
drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
"x-powers,drive-vbus-en");
break;
case AXP809_ID:
regulators = axp809_regulators;
nregulators = AXP809_REG_ID_MAX;
break;
default:
dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
axp20x->variant);
return -EINVAL;
}
/* This only sets the dcdc freq. Ignore any errors */
axp20x_regulator_parse_dt(pdev);
for (i = 0; i < nregulators; i++) {
const struct regulator_desc *desc = &regulators[i];
struct regulator_desc *new_desc;
/*
* Regulators DC1SW and DC5LDO are connected internally,
* so we have to handle their supply names separately.
*
* We always register the regulators in proper sequence,
* so the supply names are correctly read. See the last
* part of this loop to see where we save the DT defined
* name.
*/
if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
(regulators == axp809_regulators && i == AXP809_DC1SW)) {
new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
GFP_KERNEL);
*new_desc = regulators[i];
new_desc->supply_name = dcdc1_name;
desc = new_desc;
}
if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
(regulators == axp809_regulators && i == AXP809_DC5LDO)) {
new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
GFP_KERNEL);
*new_desc = regulators[i];
new_desc->supply_name = dcdc5_name;
desc = new_desc;
}
rdev = devm_regulator_register(&pdev->dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "Failed to register %s\n",
regulators[i].name);
return PTR_ERR(rdev);
}
ret = of_property_read_u32(rdev->dev.of_node,
"x-powers,dcdc-workmode",
&workmode);
if (!ret) {
if (axp20x_set_dcdc_workmode(rdev, i, workmode))
dev_err(&pdev->dev, "Failed to set workmode on %s\n",
rdev->desc->name);
}
/*
* Save AXP22X DCDC1 / DCDC5 regulator names for later.
*/
if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
(regulators == axp809_regulators && i == AXP809_DCDC1))
of_property_read_string(rdev->dev.of_node,
"regulator-name",
&dcdc1_name);
if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
(regulators == axp809_regulators && i == AXP809_DCDC5))
of_property_read_string(rdev->dev.of_node,
"regulator-name",
&dcdc5_name);
}
if (drivevbus) {
/* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
AXP22X_MISC_N_VBUSEN_FUNC, 0);
rdev = devm_regulator_register(&pdev->dev,
&axp22x_drivevbus_regulator,
&config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "Failed to register drivevbus\n");
return PTR_ERR(rdev);
}
}
return 0;
}
static struct platform_driver axp20x_regulator_driver = {
.probe = axp20x_regulator_probe,
.driver = {
.name = "axp20x-regulator",
},
};
module_platform_driver(axp20x_regulator_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
MODULE_ALIAS("platform:axp20x-regulator");
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