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linux/drivers/regulator/axp20x-regulator.c
Gustavo A. R. Silva 4b03227a65
regulator: axp20x: Mark expected switch fall-throughs 
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case, I moved the whole comment
"Fall through to the check below.", which contains the "Fall through"
comment, at the bottom of the case, which is what GCC is expecting
to find.

Addresses-Coverity-ID: 1436594 ("Missing break in switch")
Addresses-Coverity-ID: 1364475 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-10-04 15:02:19 +01:00

863 lines
30 KiB
C
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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 const struct regulator_ops axp20x_ops_fixed = {
.list_voltage = regulator_list_voltage_linear,
};
static const 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 const 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 const 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,
};
/* DCDC ranges shared with AXP813 */
static const struct regulator_linear_range axp803_dcdc234_ranges[] = {
REGULATOR_LINEAR_RANGE(500000, 0x0, 0x46, 10000),
REGULATOR_LINEAR_RANGE(1220000, 0x47, 0x4b, 20000),
};
static const struct regulator_linear_range axp803_dcdc5_ranges[] = {
REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 10000),
REGULATOR_LINEAR_RANGE(1140000, 0x21, 0x44, 20000),
};
static const struct regulator_linear_range axp803_dcdc6_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
};
/* AXP806's CLDO2 and AXP809's DLDO1 shares the same range */
static const struct regulator_linear_range axp803_dldo2_ranges[] = {
REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
};
static const struct regulator_desc axp803_regulators[] = {
AXP_DESC(AXP803, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
AXP_DESC_RANGES(AXP803, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(1)),
AXP_DESC_RANGES(AXP803, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(2)),
AXP_DESC_RANGES(AXP803, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(3)),
AXP_DESC_RANGES(AXP803, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(4)),
AXP_DESC_RANGES(AXP803, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(5)),
/* secondary switchable output of DCDC1 */
AXP_DESC_SW(AXP803, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
BIT(7)),
AXP_DESC(AXP803, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
AXP_DESC(AXP803, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
AXP_DESC(AXP803, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
AXP_DESC(AXP803, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
AXP_DESC_RANGES(AXP803, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
BIT(4)),
AXP_DESC(AXP803, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
AXP_DESC(AXP803, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
AXP_DESC(AXP803, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
AXP_DESC(AXP803, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
AXP_DESC(AXP803, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
AXP_DESC(AXP803, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
AXP_DESC(AXP803, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
AXP_DESC_IO(AXP803, 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(AXP803, 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(AXP803, RTC_LDO, "rtc-ldo", "ips", 3000),
};
static const struct regulator_linear_range axp806_dcdca_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
};
static const struct regulator_linear_range axp806_dcdcd_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000),
REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000),
};
static const struct regulator_desc axp806_regulators[] = {
AXP_DESC_RANGES(AXP806, DCDCA, "dcdca", "vina", axp806_dcdca_ranges,
72, AXP806_DCDCA_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
BIT(0)),
AXP_DESC(AXP806, DCDCB, "dcdcb", "vinb", 1000, 2550, 50,
AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(1)),
AXP_DESC_RANGES(AXP806, DCDCC, "dcdcc", "vinc", axp806_dcdca_ranges,
72, AXP806_DCDCC_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
BIT(2)),
AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges,
64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1,
BIT(3)),
AXP_DESC(AXP806, DCDCE, "dcdce", "vine", 1100, 3400, 100,
AXP806_DCDCE_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(4)),
AXP_DESC(AXP806, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
AXP806_ALDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(5)),
AXP_DESC(AXP806, ALDO2, "aldo2", "aldoin", 700, 3400, 100,
AXP806_ALDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(6)),
AXP_DESC(AXP806, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
AXP806_ALDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(7)),
AXP_DESC(AXP806, BLDO1, "bldo1", "bldoin", 700, 1900, 100,
AXP806_BLDO1_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(0)),
AXP_DESC(AXP806, BLDO2, "bldo2", "bldoin", 700, 1900, 100,
AXP806_BLDO2_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(1)),
AXP_DESC(AXP806, BLDO3, "bldo3", "bldoin", 700, 1900, 100,
AXP806_BLDO3_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(2)),
AXP_DESC(AXP806, BLDO4, "bldo4", "bldoin", 700, 1900, 100,
AXP806_BLDO4_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(3)),
AXP_DESC(AXP806, CLDO1, "cldo1", "cldoin", 700, 3300, 100,
AXP806_CLDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(4)),
AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp803_dldo2_ranges,
32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2,
BIT(5)),
AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100,
AXP806_CLDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(6)),
AXP_DESC_SW(AXP806, SW, "sw", "swin", AXP806_PWR_OUT_CTRL2, BIT(7)),
};
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_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", axp803_dldo2_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)),
/*
* Note the datasheet only guarantees reliable operation up to
* 3.3V, this needs to be enforced via dts provided constraints
*/
AXP_DESC_IO(AXP809, 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(AXP809, 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(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
};
static const struct regulator_desc axp813_regulators[] = {
AXP_DESC(AXP813, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
AXP_DESC_RANGES(AXP813, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(1)),
AXP_DESC_RANGES(AXP813, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(2)),
AXP_DESC_RANGES(AXP813, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(3)),
AXP_DESC_RANGES(AXP813, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(4)),
AXP_DESC_RANGES(AXP813, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(5)),
AXP_DESC_RANGES(AXP813, DCDC7, "dcdc7", "vin7", axp803_dcdc6_ranges,
72, AXP813_DCDC7_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
BIT(6)),
AXP_DESC(AXP813, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
AXP_DESC(AXP813, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
AXP_DESC(AXP813, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
AXP_DESC(AXP813, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
AXP_DESC_RANGES(AXP813, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
BIT(4)),
AXP_DESC(AXP813, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
AXP_DESC(AXP813, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
AXP_DESC(AXP813, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
AXP_DESC(AXP813, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
AXP_DESC(AXP813, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
/* to do / check ... */
AXP_DESC(AXP813, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
AXP_DESC(AXP813, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
/*
* TODO: FLDO3 = {DCDC5, FLDOIN} / 2
*
* This means FLDO3 effectively switches supplies at runtime,
* something the regulator subsystem does not support.
*/
AXP_DESC_FIXED(AXP813, RTC_LDO, "rtc-ldo", "ips", 1800),
AXP_DESC_IO(AXP813, 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(AXP813, 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_SW(AXP813, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(7)),
};
static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
{
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
unsigned int reg = AXP20X_DCDC_FREQ;
u32 min, max, def, step;
switch (axp20x->variant) {
case AXP202_ID:
case AXP209_ID:
min = 750;
max = 1875;
def = 1500;
step = 75;
break;
case AXP803_ID:
case AXP813_ID:
/*
* AXP803/AXP813 DCDC work frequency setting has the same
* range and step as AXP22X, but at a different register.
* (See include/linux/mfd/axp20x.h)
*/
reg = AXP803_DCDC_FREQ_CTRL;
/* Fall through to the check below.*/
case AXP806_ID:
/*
* AXP806 also have DCDC work frequency setting register at a
* different position.
*/
if (axp20x->variant == AXP806_ID)
reg = AXP806_DCDC_FREQ_CTRL;
/* Fall through */
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, reg,
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 reg = AXP20X_DCDC_MODE;
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 AXP806_ID:
reg = AXP806_DCDC_MODE_CTRL2;
/*
* AXP806 DCDC regulator IDs have the same range as AXP22X.
* Fall through to the check below.
* (See include/linux/mfd/axp20x.h)
*/
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;
case AXP803_ID:
if (id < AXP803_DCDC1 || id > AXP803_DCDC6)
return -EINVAL;
mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP803_DCDC1);
workmode <<= id - AXP803_DCDC1;
break;
case AXP813_ID:
if (id < AXP813_DCDC1 || id > AXP813_DCDC7)
return -EINVAL;
mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP813_DCDC1);
workmode <<= id - AXP813_DCDC1;
break;
default:
/* should not happen */
WARN_ON(1);
return -EINVAL;
}
return regmap_update_bits(rdev->regmap, reg, mask, workmode);
}
/*
* This function checks whether a regulator is part of a poly-phase
* output setup based on the registers settings. Returns true if it is.
*/
static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
{
u32 reg = 0;
/*
* Currently in our supported AXP variants, only AXP803, AXP806,
* and AXP813 have polyphase regulators.
*/
switch (axp20x->variant) {
case AXP803_ID:
case AXP813_ID:
regmap_read(axp20x->regmap, AXP803_POLYPHASE_CTRL, &reg);
switch (id) {
case AXP803_DCDC3:
return !!(reg & BIT(6));
case AXP803_DCDC6:
return !!(reg & BIT(5));
}
break;
case AXP806_ID:
regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, &reg);
switch (id) {
case AXP806_DCDCB:
return (((reg & GENMASK(7, 6)) == BIT(6)) ||
((reg & GENMASK(7, 6)) == BIT(7)));
case AXP806_DCDCC:
return ((reg & GENMASK(7, 6)) == BIT(7));
case AXP806_DCDCE:
return !!(reg & BIT(5));
}
break;
default:
return false;
}
return false;
}
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 AXP803_ID:
regulators = axp803_regulators;
nregulators = AXP803_REG_ID_MAX;
drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
"x-powers,drive-vbus-en");
break;
case AXP806_ID:
regulators = axp806_regulators;
nregulators = AXP806_REG_ID_MAX;
break;
case AXP809_ID:
regulators = axp809_regulators;
nregulators = AXP809_REG_ID_MAX;
break;
case AXP813_ID:
regulators = axp813_regulators;
nregulators = AXP813_REG_ID_MAX;
drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
"x-powers,drive-vbus-en");
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;
/*
* If this regulator is a slave in a poly-phase setup,
* skip it, as its controls are bound to the master
* regulator and won't work.
*/
if (axp20x_is_polyphase_slave(axp20x, i))
continue;
/* Support for AXP813's FLDO3 is not implemented */
if (axp20x->variant == AXP813_ID && i == AXP813_FLDO3)
continue;
/*
* 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 == axp803_regulators && i == AXP803_DC1SW) ||
(regulators == axp809_regulators && i == AXP809_DC1SW)) {
new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
GFP_KERNEL);
if (!new_desc)
return -ENOMEM;
*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);
if (!new_desc)
return -ENOMEM;
*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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