linux/drivers/regulator/da9063-regulator.c
Vincent Pelletier 541ee8f640
regulator: da9063: Add support for full-current mode.
In addition to the ability of merging some power outputs, this chip has
an overdrive mode.
BCORE1, BCORE2 and BPRO have this ability, in which case the legal
current draw is increased from 2 amps to 2.5 amps (at the expense of
a quiescent current increase), and the configurable current limits
are doubled.
If a current higher than maximum half-current mode is requested, enable
overdrive, and scale the current limit down.
Symmetrically, scale the current limit up when querying a overdrive-enabled
regulator.

Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/824518e6391b783a12eba9ff0527f06607a34bfb.1626160826.git.plr.vincent@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-07-15 17:24:50 +01:00

996 lines
26 KiB
C

// SPDX-License-Identifier: GPL-2.0+
//
// Regulator driver for DA9063 PMIC series
//
// Copyright 2012 Dialog Semiconductors Ltd.
// Copyright 2013 Philipp Zabel, Pengutronix
//
// Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/da9063/core.h>
#include <linux/mfd/da9063/registers.h>
/* Definition for registering regmap bit fields using a mask */
#define BFIELD(_reg, _mask) \
REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \
sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1)
/* DA9063 and DA9063L regulator IDs */
enum {
/* BUCKs */
DA9063_ID_BCORE1,
DA9063_ID_BCORE2,
DA9063_ID_BPRO,
DA9063_ID_BMEM,
DA9063_ID_BIO,
DA9063_ID_BPERI,
/* BCORE1 and BCORE2 in merged mode */
DA9063_ID_BCORES_MERGED,
/* BMEM and BIO in merged mode */
DA9063_ID_BMEM_BIO_MERGED,
/* When two BUCKs are merged, they cannot be reused separately */
/* LDOs on both DA9063 and DA9063L */
DA9063_ID_LDO3,
DA9063_ID_LDO7,
DA9063_ID_LDO8,
DA9063_ID_LDO9,
DA9063_ID_LDO11,
/* DA9063-only LDOs */
DA9063_ID_LDO1,
DA9063_ID_LDO2,
DA9063_ID_LDO4,
DA9063_ID_LDO5,
DA9063_ID_LDO6,
DA9063_ID_LDO10,
};
/* Old regulator platform data */
struct da9063_regulator_data {
int id;
struct regulator_init_data *initdata;
};
struct da9063_regulators_pdata {
unsigned int n_regulators;
struct da9063_regulator_data *regulator_data;
};
/* Regulator capabilities and registers description */
struct da9063_regulator_info {
struct regulator_desc desc;
/* DA9063 main register fields */
struct reg_field mode; /* buck mode of operation */
struct reg_field suspend;
struct reg_field sleep;
struct reg_field suspend_sleep;
unsigned int suspend_vsel_reg;
/* DA9063 event detection bit */
struct reg_field oc_event;
};
/* Macros for LDO */
#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \
.desc.id = chip##_ID_##regl_name, \
.desc.name = __stringify(chip##_##regl_name), \
.desc.ops = &da9063_ldo_ops, \
.desc.min_uV = (min_mV) * 1000, \
.desc.uV_step = (step_mV) * 1000, \
.desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \
+ (DA9063_V##regl_name##_BIAS)), \
.desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
.desc.enable_mask = DA9063_LDO_EN, \
.desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
.desc.vsel_mask = DA9063_V##regl_name##_MASK, \
.desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \
.sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \
.suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \
.suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \
.suspend_vsel_reg = DA9063_REG_V##regl_name##_B
/* Macros for voltage DC/DC converters (BUCKs) */
#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \
creg, cmask) \
.desc.id = chip##_ID_##regl_name, \
.desc.name = __stringify(chip##_##regl_name), \
.desc.ops = &da9063_buck_ops, \
.desc.min_uV = (min_mV) * 1000, \
.desc.uV_step = (step_mV) * 1000, \
.desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \
.desc.csel_reg = (creg), \
.desc.csel_mask = (cmask), \
.desc.curr_table = limits_array, \
.desc.n_current_limits = ARRAY_SIZE(limits_array)
#define DA9063_BUCK_COMMON_FIELDS(regl_name) \
.desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
.desc.enable_mask = DA9063_BUCK_EN, \
.desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
.desc.vsel_mask = DA9063_VBUCK_MASK, \
.desc.linear_min_sel = DA9063_VBUCK_BIAS, \
.sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \
.suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \
.suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \
.suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \
.mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)
/* Defines asignment of regulators info table to chip model */
struct da9063_dev_model {
const struct da9063_regulator_info *regulator_info;
unsigned int n_regulators;
enum da9063_type type;
};
/* Single regulator settings */
struct da9063_regulator {
struct regulator_desc desc;
struct regulator_dev *rdev;
struct da9063 *hw;
const struct da9063_regulator_info *info;
struct regmap_field *mode;
struct regmap_field *suspend;
struct regmap_field *sleep;
struct regmap_field *suspend_sleep;
};
/* Encapsulates all information for the regulators driver */
struct da9063_regulators {
unsigned int n_regulators;
/* Array size to be defined during init. Keep at end. */
struct da9063_regulator regulator[];
};
/* BUCK modes for DA9063 */
enum {
BUCK_MODE_MANUAL, /* 0 */
BUCK_MODE_SLEEP, /* 1 */
BUCK_MODE_SYNC, /* 2 */
BUCK_MODE_AUTO /* 3 */
};
/* Regulator operations */
/*
* Current limits array (in uA) for BCORE1, BCORE2, BPRO.
* Entry indexes corresponds to register values.
*/
static const unsigned int da9063_buck_a_limits[] = {
500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
};
/*
* Current limits array (in uA) for BMEM, BIO, BPERI.
* Entry indexes corresponds to register values.
*/
static const unsigned int da9063_buck_b_limits[] = {
1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
};
/*
* Current limits array (in uA) for merged BCORE1 and BCORE2.
* Entry indexes corresponds to register values.
*/
static const unsigned int da9063_bcores_merged_limits[] = {
1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
};
/*
* Current limits array (in uA) for merged BMEM and BIO.
* Entry indexes corresponds to register values.
*/
static const unsigned int da9063_bmem_bio_merged_limits[] = {
3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
};
static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned int val;
switch (mode) {
case REGULATOR_MODE_FAST:
val = BUCK_MODE_SYNC;
break;
case REGULATOR_MODE_NORMAL:
val = BUCK_MODE_AUTO;
break;
case REGULATOR_MODE_STANDBY:
val = BUCK_MODE_SLEEP;
break;
default:
return -EINVAL;
}
return regmap_field_write(regl->mode, val);
}
/*
* Bucks use single mode register field for normal operation
* and suspend state.
* There are 3 modes to map to: FAST, NORMAL, and STANDBY.
*/
static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned int val;
int ret;
ret = regmap_field_read(regl->mode, &val);
if (ret < 0)
return ret;
switch (val) {
default:
case BUCK_MODE_MANUAL:
/* Sleep flag bit decides the mode */
break;
case BUCK_MODE_SLEEP:
return REGULATOR_MODE_STANDBY;
case BUCK_MODE_SYNC:
return REGULATOR_MODE_FAST;
case BUCK_MODE_AUTO:
return REGULATOR_MODE_NORMAL;
}
ret = regmap_field_read(regl->sleep, &val);
if (ret < 0)
return 0;
if (val)
return REGULATOR_MODE_STANDBY;
else
return REGULATOR_MODE_FAST;
}
/*
* LDOs use sleep flags - one for normal and one for suspend state.
* There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
*/
static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned int val;
switch (mode) {
case REGULATOR_MODE_NORMAL:
val = 0;
break;
case REGULATOR_MODE_STANDBY:
val = 1;
break;
default:
return -EINVAL;
}
return regmap_field_write(regl->sleep, val);
}
static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
int ret, val;
ret = regmap_field_read(regl->sleep, &val);
if (ret < 0)
return 0;
if (val)
return REGULATOR_MODE_STANDBY;
else
return REGULATOR_MODE_NORMAL;
}
static int da9063_buck_get_status(struct regulator_dev *rdev)
{
int ret = regulator_is_enabled_regmap(rdev);
if (ret == 0) {
ret = REGULATOR_STATUS_OFF;
} else if (ret > 0) {
ret = da9063_buck_get_mode(rdev);
if (ret > 0)
ret = regulator_mode_to_status(ret);
else if (ret == 0)
ret = -EIO;
}
return ret;
}
static int da9063_ldo_get_status(struct regulator_dev *rdev)
{
int ret = regulator_is_enabled_regmap(rdev);
if (ret == 0) {
ret = REGULATOR_STATUS_OFF;
} else if (ret > 0) {
ret = da9063_ldo_get_mode(rdev);
if (ret > 0)
ret = regulator_mode_to_status(ret);
else if (ret == 0)
ret = -EIO;
}
return ret;
}
static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
const struct da9063_regulator_info *rinfo = regl->info;
int ret, sel;
sel = regulator_map_voltage_linear(rdev, uV, uV);
if (sel < 0)
return sel;
sel <<= ffs(rdev->desc->vsel_mask) - 1;
ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
rdev->desc->vsel_mask, sel);
return ret;
}
static int da9063_suspend_enable(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
return regmap_field_write(regl->suspend, 1);
}
static int da9063_suspend_disable(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
return regmap_field_write(regl->suspend, 0);
}
static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev,
unsigned int mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
int val;
switch (mode) {
case REGULATOR_MODE_FAST:
val = BUCK_MODE_SYNC;
break;
case REGULATOR_MODE_NORMAL:
val = BUCK_MODE_AUTO;
break;
case REGULATOR_MODE_STANDBY:
val = BUCK_MODE_SLEEP;
break;
default:
return -EINVAL;
}
return regmap_field_write(regl->mode, val);
}
static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev,
unsigned int mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned int val;
switch (mode) {
case REGULATOR_MODE_NORMAL:
val = 0;
break;
case REGULATOR_MODE_STANDBY:
val = 1;
break;
default:
return -EINVAL;
}
return regmap_field_write(regl->suspend_sleep, val);
}
static unsigned int da9063_get_overdrive_mask(const struct regulator_desc *desc)
{
switch (desc->id) {
case DA9063_ID_BCORES_MERGED:
case DA9063_ID_BCORE1:
return DA9063_BCORE1_OD;
case DA9063_ID_BCORE2:
return DA9063_BCORE2_OD;
case DA9063_ID_BPRO:
return DA9063_BPRO_OD;
default:
return 0;
}
}
static int da9063_buck_set_limit_set_overdrive(struct regulator_dev *rdev,
int min_uA, int max_uA,
unsigned int overdrive_mask)
{
/*
* When enabling overdrive, do it before changing the current limit to
* ensure sufficient supply throughout the switch.
*/
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
int ret;
unsigned int orig_overdrive;
ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H,
&orig_overdrive);
if (ret < 0)
return ret;
orig_overdrive &= overdrive_mask;
if (orig_overdrive == 0) {
ret = regmap_set_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,
overdrive_mask);
if (ret < 0)
return ret;
}
ret = regulator_set_current_limit_regmap(rdev, min_uA / 2, max_uA / 2);
if (ret < 0 && orig_overdrive == 0)
/*
* regulator_set_current_limit_regmap may have rejected the
* change because of unusable min_uA and/or max_uA inputs.
* Attempt to restore original overdrive state, ignore failure-
* on-failure.
*/
regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,
overdrive_mask);
return ret;
}
static int da9063_buck_set_limit_clear_overdrive(struct regulator_dev *rdev,
int min_uA, int max_uA,
unsigned int overdrive_mask)
{
/*
* When disabling overdrive, do it after changing the current limit to
* ensure sufficient supply throughout the switch.
*/
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
int ret, orig_limit;
ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &orig_limit);
if (ret < 0)
return ret;
ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA);
if (ret < 0)
return ret;
ret = regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,
overdrive_mask);
if (ret < 0)
/*
* Attempt to restore original current limit, ignore failure-
* on-failure.
*/
regmap_write(rdev->regmap, rdev->desc->csel_reg, orig_limit);
return ret;
}
static int da9063_buck_set_current_limit(struct regulator_dev *rdev,
int min_uA, int max_uA)
{
unsigned int overdrive_mask, n_currents;
overdrive_mask = da9063_get_overdrive_mask(rdev->desc);
if (overdrive_mask) {
n_currents = rdev->desc->n_current_limits;
if (n_currents == 0)
return -EINVAL;
if (max_uA > rdev->desc->curr_table[n_currents - 1])
return da9063_buck_set_limit_set_overdrive(rdev, min_uA,
max_uA,
overdrive_mask);
return da9063_buck_set_limit_clear_overdrive(rdev, min_uA,
max_uA,
overdrive_mask);
}
return regulator_set_current_limit_regmap(rdev, min_uA, max_uA);
}
static int da9063_buck_get_current_limit(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
int val, ret, limit;
unsigned int mask;
limit = regulator_get_current_limit_regmap(rdev);
if (limit < 0)
return limit;
mask = da9063_get_overdrive_mask(rdev->desc);
if (mask) {
ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, &val);
if (ret < 0)
return ret;
if (val & mask)
limit *= 2;
}
return limit;
}
static const struct regulator_ops da9063_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear,
.set_current_limit = da9063_buck_set_current_limit,
.get_current_limit = da9063_buck_get_current_limit,
.set_mode = da9063_buck_set_mode,
.get_mode = da9063_buck_get_mode,
.get_status = da9063_buck_get_status,
.set_suspend_voltage = da9063_set_suspend_voltage,
.set_suspend_enable = da9063_suspend_enable,
.set_suspend_disable = da9063_suspend_disable,
.set_suspend_mode = da9063_buck_set_suspend_mode,
};
static const struct regulator_ops da9063_ldo_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear,
.set_mode = da9063_ldo_set_mode,
.get_mode = da9063_ldo_get_mode,
.get_status = da9063_ldo_get_status,
.set_suspend_voltage = da9063_set_suspend_voltage,
.set_suspend_enable = da9063_suspend_enable,
.set_suspend_disable = da9063_suspend_disable,
.set_suspend_mode = da9063_ldo_set_suspend_mode,
};
/* Info of regulators for DA9063 */
static const struct da9063_regulator_info da9063_regulator_info[] = {
{
DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
da9063_buck_a_limits,
DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
DA9063_BUCK_COMMON_FIELDS(BCORE1),
},
{
DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
da9063_buck_a_limits,
DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),
DA9063_BUCK_COMMON_FIELDS(BCORE2),
},
{
DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
da9063_buck_a_limits,
DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),
DA9063_BUCK_COMMON_FIELDS(BPRO),
},
{
DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
da9063_buck_b_limits,
DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
DA9063_BUCK_COMMON_FIELDS(BMEM),
},
{
DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
da9063_buck_b_limits,
DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),
DA9063_BUCK_COMMON_FIELDS(BIO),
},
{
DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
da9063_buck_b_limits,
DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),
DA9063_BUCK_COMMON_FIELDS(BPERI),
},
{
DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
da9063_bcores_merged_limits,
DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
/* BCORES_MERGED uses the same register fields as BCORE1 */
DA9063_BUCK_COMMON_FIELDS(BCORE1),
},
{
DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
da9063_bmem_bio_merged_limits,
DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
/* BMEM_BIO_MERGED uses the same register fields as BMEM */
DA9063_BUCK_COMMON_FIELDS(BMEM),
},
{
DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
},
{
DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
},
{
DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
},
{
DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
},
{
DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
},
/* The following LDOs are present only on DA9063, not on DA9063L */
{
DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
},
{
DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
},
{
DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
},
{
DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
},
{
DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
},
{
DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
},
};
/* Link chip model with regulators info table */
static struct da9063_dev_model regulators_models[] = {
{
.regulator_info = da9063_regulator_info,
.n_regulators = ARRAY_SIZE(da9063_regulator_info),
.type = PMIC_TYPE_DA9063,
},
{
.regulator_info = da9063_regulator_info,
.n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,
.type = PMIC_TYPE_DA9063L,
},
{ }
};
/* Regulator interrupt handlers */
static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
{
struct da9063_regulators *regulators = data;
struct da9063 *hw = regulators->regulator[0].hw;
struct da9063_regulator *regl;
int bits, i, ret;
ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
if (ret < 0)
return IRQ_NONE;
for (i = regulators->n_regulators - 1; i >= 0; i--) {
regl = &regulators->regulator[i];
if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
continue;
if (BIT(regl->info->oc_event.lsb) & bits) {
regulator_notifier_call_chain(regl->rdev,
REGULATOR_EVENT_OVER_CURRENT, NULL);
}
}
return IRQ_HANDLED;
}
/*
* Probing and Initialisation functions
*/
static const struct regulator_init_data *da9063_get_regulator_initdata(
const struct da9063_regulators_pdata *regl_pdata, int id)
{
int i;
for (i = 0; i < regl_pdata->n_regulators; i++) {
if (id == regl_pdata->regulator_data[i].id)
return regl_pdata->regulator_data[i].initdata;
}
return NULL;
}
static struct of_regulator_match da9063_matches[] = {
[DA9063_ID_BCORE1] = { .name = "bcore1" },
[DA9063_ID_BCORE2] = { .name = "bcore2" },
[DA9063_ID_BPRO] = { .name = "bpro", },
[DA9063_ID_BMEM] = { .name = "bmem", },
[DA9063_ID_BIO] = { .name = "bio", },
[DA9063_ID_BPERI] = { .name = "bperi", },
[DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },
[DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },
[DA9063_ID_LDO3] = { .name = "ldo3", },
[DA9063_ID_LDO7] = { .name = "ldo7", },
[DA9063_ID_LDO8] = { .name = "ldo8", },
[DA9063_ID_LDO9] = { .name = "ldo9", },
[DA9063_ID_LDO11] = { .name = "ldo11", },
/* The following LDOs are present only on DA9063, not on DA9063L */
[DA9063_ID_LDO1] = { .name = "ldo1", },
[DA9063_ID_LDO2] = { .name = "ldo2", },
[DA9063_ID_LDO4] = { .name = "ldo4", },
[DA9063_ID_LDO5] = { .name = "ldo5", },
[DA9063_ID_LDO6] = { .name = "ldo6", },
[DA9063_ID_LDO10] = { .name = "ldo10", },
};
static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
struct platform_device *pdev,
struct of_regulator_match **da9063_reg_matches)
{
struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
struct da9063_regulators_pdata *pdata;
struct da9063_regulator_data *rdata;
struct device_node *node;
int da9063_matches_len = ARRAY_SIZE(da9063_matches);
int i, n, num;
if (da9063->type == PMIC_TYPE_DA9063L)
da9063_matches_len -= 6;
node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
if (!node) {
dev_err(&pdev->dev, "Regulators device node not found\n");
return ERR_PTR(-ENODEV);
}
num = of_regulator_match(&pdev->dev, node, da9063_matches,
da9063_matches_len);
of_node_put(node);
if (num < 0) {
dev_err(&pdev->dev, "Failed to match regulators\n");
return ERR_PTR(-EINVAL);
}
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM);
pdata->regulator_data = devm_kcalloc(&pdev->dev,
num, sizeof(*pdata->regulator_data),
GFP_KERNEL);
if (!pdata->regulator_data)
return ERR_PTR(-ENOMEM);
pdata->n_regulators = num;
n = 0;
for (i = 0; i < da9063_matches_len; i++) {
if (!da9063_matches[i].init_data)
continue;
rdata = &pdata->regulator_data[n];
rdata->id = i;
rdata->initdata = da9063_matches[i].init_data;
n++;
}
*da9063_reg_matches = da9063_matches;
return pdata;
}
static int da9063_regulator_probe(struct platform_device *pdev)
{
struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
struct of_regulator_match *da9063_reg_matches = NULL;
struct da9063_regulators_pdata *regl_pdata;
const struct da9063_dev_model *model;
struct da9063_regulators *regulators;
struct da9063_regulator *regl;
struct regulator_config config;
bool bcores_merged, bmem_bio_merged;
int id, irq, n, n_regulators, ret, val;
regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches);
if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
dev_err(&pdev->dev,
"No regulators defined for the platform\n");
return -ENODEV;
}
/* Find regulators set for particular device model */
for (model = regulators_models; model->regulator_info; model++) {
if (model->type == da9063->type)
break;
}
if (!model->regulator_info) {
dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
da9063->type);
return -ENODEV;
}
ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
if (ret < 0) {
dev_err(&pdev->dev,
"Error while reading BUCKs configuration\n");
return ret;
}
bcores_merged = val & DA9063_BCORE_MERGE;
bmem_bio_merged = val & DA9063_BUCK_MERGE;
n_regulators = model->n_regulators;
if (bcores_merged)
n_regulators -= 2; /* remove BCORE1, BCORE2 */
else
n_regulators--; /* remove BCORES_MERGED */
if (bmem_bio_merged)
n_regulators -= 2; /* remove BMEM, BIO */
else
n_regulators--; /* remove BMEM_BIO_MERGED */
/* Allocate memory required by usable regulators */
regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,
regulator, n_regulators), GFP_KERNEL);
if (!regulators)
return -ENOMEM;
regulators->n_regulators = n_regulators;
platform_set_drvdata(pdev, regulators);
/* Register all regulators declared in platform information */
n = 0;
id = 0;
while (n < regulators->n_regulators) {
/* Skip regulator IDs depending on merge mode configuration */
switch (id) {
case DA9063_ID_BCORE1:
case DA9063_ID_BCORE2:
if (bcores_merged) {
id++;
continue;
}
break;
case DA9063_ID_BMEM:
case DA9063_ID_BIO:
if (bmem_bio_merged) {
id++;
continue;
}
break;
case DA9063_ID_BCORES_MERGED:
if (!bcores_merged) {
id++;
continue;
}
break;
case DA9063_ID_BMEM_BIO_MERGED:
if (!bmem_bio_merged) {
id++;
continue;
}
break;
}
/* Initialise regulator structure */
regl = &regulators->regulator[n];
regl->hw = da9063;
regl->info = &model->regulator_info[id];
regl->desc = regl->info->desc;
regl->desc.type = REGULATOR_VOLTAGE;
regl->desc.owner = THIS_MODULE;
if (regl->info->mode.reg) {
regl->mode = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->mode);
if (IS_ERR(regl->mode))
return PTR_ERR(regl->mode);
}
if (regl->info->suspend.reg) {
regl->suspend = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->suspend);
if (IS_ERR(regl->suspend))
return PTR_ERR(regl->suspend);
}
if (regl->info->sleep.reg) {
regl->sleep = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->sleep);
if (IS_ERR(regl->sleep))
return PTR_ERR(regl->sleep);
}
if (regl->info->suspend_sleep.reg) {
regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->suspend_sleep);
if (IS_ERR(regl->suspend_sleep))
return PTR_ERR(regl->suspend_sleep);
}
/* Register regulator */
memset(&config, 0, sizeof(config));
config.dev = &pdev->dev;
config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
config.driver_data = regl;
if (da9063_reg_matches)
config.of_node = da9063_reg_matches[id].of_node;
config.regmap = da9063->regmap;
regl->rdev = devm_regulator_register(&pdev->dev, &regl->desc,
&config);
if (IS_ERR(regl->rdev)) {
dev_err(&pdev->dev,
"Failed to register %s regulator\n",
regl->desc.name);
return PTR_ERR(regl->rdev);
}
id++;
n++;
}
/* LDOs overcurrent event support */
irq = platform_get_irq_byname(pdev, "LDO_LIM");
if (irq < 0)
return irq;
ret = devm_request_threaded_irq(&pdev->dev, irq,
NULL, da9063_ldo_lim_event,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"LDO_LIM", regulators);
if (ret)
dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");
return ret;
}
static struct platform_driver da9063_regulator_driver = {
.driver = {
.name = DA9063_DRVNAME_REGULATORS,
},
.probe = da9063_regulator_probe,
};
static int __init da9063_regulator_init(void)
{
return platform_driver_register(&da9063_regulator_driver);
}
subsys_initcall(da9063_regulator_init);
static void __exit da9063_regulator_cleanup(void)
{
platform_driver_unregister(&da9063_regulator_driver);
}
module_exit(da9063_regulator_cleanup);
/* Module information */
MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
MODULE_DESCRIPTION("DA9063 regulators driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);