linux/drivers/regulator/da9063-regulator.c
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00

919 lines
25 KiB
C

/*
* Regulator driver for DA9063 PMIC series
*
* Copyright 2012 Dialog Semiconductors Ltd.
* Copyright 2013 Philipp Zabel, Pengutronix
*
* Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#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/pdata.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)
/* Regulator capabilities and registers description */
struct da9063_regulator_info {
struct regulator_desc desc;
/* Current limiting */
unsigned n_current_limits;
const int *current_limits;
/* 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;
struct reg_field ilimit;
/* 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_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) \
.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, \
.current_limits = limits_array, \
.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_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 n_regulators;
unsigned dev_model;
};
/* 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;
struct regmap_field *ilimit;
};
/* Encapsulates all information for the regulators driver */
struct da9063_regulators {
int irq_ldo_lim;
int irq_uvov;
unsigned n_regulators;
/* Array size to be defined during init. Keep at end. */
struct da9063_regulator regulator[0];
};
/* 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 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 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 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 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_set_current_limit(struct regulator_dev *rdev,
int min_uA, int max_uA)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
const struct da9063_regulator_info *rinfo = regl->info;
int n, tval;
for (n = 0; n < rinfo->n_current_limits; n++) {
tval = rinfo->current_limits[n];
if (tval >= min_uA && tval <= max_uA)
return regmap_field_write(regl->ilimit, n);
}
return -EINVAL;
}
static int da9063_get_current_limit(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
const struct da9063_regulator_info *rinfo = regl->info;
unsigned int sel;
int ret;
ret = regmap_field_read(regl->ilimit, &sel);
if (ret < 0)
return ret;
if (sel >= rinfo->n_current_limits)
sel = rinfo->n_current_limits - 1;
return rinfo->current_limits[sel];
}
static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned 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 da9063_buck_get_mode(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
struct regmap_field *field;
unsigned int val, mode = 0;
int ret;
ret = regmap_field_read(regl->mode, &val);
if (ret < 0)
return ret;
switch (val) {
default:
case BUCK_MODE_MANUAL:
mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY;
/* 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;
}
/* Detect current regulator state */
ret = regmap_field_read(regl->suspend, &val);
if (ret < 0)
return 0;
/* Read regulator mode from proper register, depending on state */
if (val)
field = regl->suspend_sleep;
else
field = regl->sleep;
ret = regmap_field_read(field, &val);
if (ret < 0)
return 0;
if (val)
mode &= REGULATOR_MODE_STANDBY;
else
mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST;
return mode;
}
/*
* 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 mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned 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 da9063_ldo_get_mode(struct regulator_dev *rdev)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
struct regmap_field *field;
int ret, val;
/* Detect current regulator state */
ret = regmap_field_read(regl->suspend, &val);
if (ret < 0)
return 0;
/* Read regulator mode from proper register, depending on state */
if (val)
field = regl->suspend_sleep;
else
field = regl->sleep;
ret = regmap_field_read(field, &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 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 mode)
{
struct da9063_regulator *regl = rdev_get_drvdata(rdev);
unsigned 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 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_set_current_limit,
.get_current_limit = da9063_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 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_BUCK_COMMON_FIELDS(BCORE1),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C,
DA9063_BCORE1_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
da9063_buck_a_limits),
DA9063_BUCK_COMMON_FIELDS(BCORE2),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C,
DA9063_BCORE2_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
da9063_buck_a_limits),
DA9063_BUCK_COMMON_FIELDS(BPRO),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B,
DA9063_BPRO_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
da9063_buck_b_limits),
DA9063_BUCK_COMMON_FIELDS(BMEM),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A,
DA9063_BMEM_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
da9063_buck_b_limits),
DA9063_BUCK_COMMON_FIELDS(BIO),
.suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A,
DA9063_BIO_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
da9063_buck_b_limits),
DA9063_BUCK_COMMON_FIELDS(BPERI),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B,
DA9063_BPERI_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
da9063_bcores_merged_limits),
/* BCORES_MERGED uses the same register fields as BCORE1 */
DA9063_BUCK_COMMON_FIELDS(BCORE1),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C,
DA9063_BCORE1_ILIM_MASK),
},
{
DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
da9063_bmem_bio_merged_limits),
/* BMEM_BIO_MERGED uses the same register fields as BMEM */
DA9063_BUCK_COMMON_FIELDS(BMEM),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
.ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A,
DA9063_BMEM_ILIM_MASK),
},
{
DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL),
},
{
DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL),
},
{
DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
.suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
},
{
DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
.suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
},
{
DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL),
},
{
DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL),
},
{
DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
},
{
DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
},
{
DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL),
},
{
DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL),
},
{
DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
.suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL),
.oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
},
};
/* 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),
.dev_model = PMIC_DA9063,
},
{ }
};
/* 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;
}
#ifdef CONFIG_OF
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_LDO1] = { .name = "ldo1", },
[DA9063_ID_LDO2] = { .name = "ldo2", },
[DA9063_ID_LDO3] = { .name = "ldo3", },
[DA9063_ID_LDO4] = { .name = "ldo4", },
[DA9063_ID_LDO5] = { .name = "ldo5", },
[DA9063_ID_LDO6] = { .name = "ldo6", },
[DA9063_ID_LDO7] = { .name = "ldo7", },
[DA9063_ID_LDO8] = { .name = "ldo8", },
[DA9063_ID_LDO9] = { .name = "ldo9", },
[DA9063_ID_LDO10] = { .name = "ldo10", },
[DA9063_ID_LDO11] = { .name = "ldo11", },
};
static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
struct platform_device *pdev,
struct of_regulator_match **da9063_reg_matches)
{
struct da9063_regulators_pdata *pdata;
struct da9063_regulator_data *rdata;
struct device_node *node;
int i, n, num;
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,
ARRAY_SIZE(da9063_matches));
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_kzalloc(&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 < ARRAY_SIZE(da9063_matches); 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;
}
#else
static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
struct platform_device *pdev,
struct of_regulator_match **da9063_reg_matches)
{
*da9063_reg_matches = NULL;
return ERR_PTR(-ENODEV);
}
#endif
static int da9063_regulator_probe(struct platform_device *pdev)
{
struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev);
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;
size_t size;
regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL;
if (!regl_pdata)
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 PTR_ERR(regl_pdata);
}
/* Find regulators set for particular device model */
for (model = regulators_models; model->regulator_info; model++) {
if (model->dev_model == da9063->model)
break;
}
if (!model->regulator_info) {
dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
da9063->model);
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 */
size = sizeof(struct da9063_regulators) +
n_regulators * sizeof(struct da9063_regulator);
regulators = devm_kzalloc(&pdev->dev, size, 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 (regl->info->suspend.reg)
regl->suspend = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->suspend);
if (regl->info->sleep.reg)
regl->sleep = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->sleep);
if (regl->info->suspend_sleep.reg)
regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->suspend_sleep);
if (regl->info->ilimit.reg)
regl->ilimit = devm_regmap_field_alloc(&pdev->dev,
da9063->regmap, regl->info->ilimit);
/* 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) {
dev_err(&pdev->dev, "Failed to get IRQ.\n");
return irq;
}
ret = request_threaded_irq(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");
regulators->irq_ldo_lim = -ENXIO;
}
return 0;
}
static int da9063_regulator_remove(struct platform_device *pdev)
{
struct da9063_regulators *regulators = platform_get_drvdata(pdev);
free_irq(regulators->irq_ldo_lim, regulators);
free_irq(regulators->irq_uvov, regulators);
return 0;
}
static struct platform_driver da9063_regulator_driver = {
.driver = {
.name = DA9063_DRVNAME_REGULATORS,
},
.probe = da9063_regulator_probe,
.remove = da9063_regulator_remove,
};
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("paltform:" DA9063_DRVNAME_REGULATORS);