687 строки
17 KiB
C
687 строки
17 KiB
C
/*
|
|
* Regulator driver for DA9055 PMIC
|
|
*
|
|
* Copyright(c) 2012 Dialog Semiconductor Ltd.
|
|
*
|
|
* Author: David Dajun Chen <dchen@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/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regulator/of_regulator.h>
|
|
|
|
#include <linux/mfd/da9055/core.h>
|
|
#include <linux/mfd/da9055/reg.h>
|
|
#include <linux/mfd/da9055/pdata.h>
|
|
|
|
#define DA9055_MIN_UA 0
|
|
#define DA9055_MAX_UA 3
|
|
|
|
#define DA9055_LDO_MODE_SYNC 0
|
|
#define DA9055_LDO_MODE_SLEEP 1
|
|
|
|
#define DA9055_BUCK_MODE_SLEEP 1
|
|
#define DA9055_BUCK_MODE_SYNC 2
|
|
#define DA9055_BUCK_MODE_AUTO 3
|
|
|
|
/* DA9055 REGULATOR IDs */
|
|
#define DA9055_ID_BUCK1 0
|
|
#define DA9055_ID_BUCK2 1
|
|
#define DA9055_ID_LDO1 2
|
|
#define DA9055_ID_LDO2 3
|
|
#define DA9055_ID_LDO3 4
|
|
#define DA9055_ID_LDO4 5
|
|
#define DA9055_ID_LDO5 6
|
|
#define DA9055_ID_LDO6 7
|
|
|
|
/* DA9055 BUCK current limit */
|
|
static const int da9055_current_limits[] = { 500000, 600000, 700000, 800000 };
|
|
|
|
struct da9055_conf_reg {
|
|
int reg;
|
|
int sel_mask;
|
|
int en_mask;
|
|
};
|
|
|
|
struct da9055_volt_reg {
|
|
int reg_a;
|
|
int reg_b;
|
|
int sl_shift;
|
|
int v_mask;
|
|
};
|
|
|
|
struct da9055_mode_reg {
|
|
int reg;
|
|
int mask;
|
|
int shift;
|
|
};
|
|
|
|
struct da9055_regulator_info {
|
|
struct regulator_desc reg_desc;
|
|
struct da9055_conf_reg conf;
|
|
struct da9055_volt_reg volt;
|
|
struct da9055_mode_reg mode;
|
|
};
|
|
|
|
struct da9055_regulator {
|
|
struct da9055 *da9055;
|
|
struct da9055_regulator_info *info;
|
|
struct regulator_dev *rdev;
|
|
enum gpio_select reg_rselect;
|
|
};
|
|
|
|
static unsigned int da9055_buck_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int ret, mode = 0;
|
|
|
|
ret = da9055_reg_read(regulator->da9055, info->mode.reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch ((ret & info->mode.mask) >> info->mode.shift) {
|
|
case DA9055_BUCK_MODE_SYNC:
|
|
mode = REGULATOR_MODE_FAST;
|
|
break;
|
|
case DA9055_BUCK_MODE_AUTO:
|
|
mode = REGULATOR_MODE_NORMAL;
|
|
break;
|
|
case DA9055_BUCK_MODE_SLEEP:
|
|
mode = REGULATOR_MODE_STANDBY;
|
|
break;
|
|
}
|
|
|
|
return mode;
|
|
}
|
|
|
|
static int da9055_buck_set_mode(struct regulator_dev *rdev,
|
|
unsigned int mode)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int val = 0;
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_FAST:
|
|
val = DA9055_BUCK_MODE_SYNC << info->mode.shift;
|
|
break;
|
|
case REGULATOR_MODE_NORMAL:
|
|
val = DA9055_BUCK_MODE_AUTO << info->mode.shift;
|
|
break;
|
|
case REGULATOR_MODE_STANDBY:
|
|
val = DA9055_BUCK_MODE_SLEEP << info->mode.shift;
|
|
break;
|
|
}
|
|
|
|
return da9055_reg_update(regulator->da9055, info->mode.reg,
|
|
info->mode.mask, val);
|
|
}
|
|
|
|
static unsigned int da9055_ldo_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int ret;
|
|
|
|
ret = da9055_reg_read(regulator->da9055, info->volt.reg_b);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (ret >> info->volt.sl_shift)
|
|
return REGULATOR_MODE_STANDBY;
|
|
else
|
|
return REGULATOR_MODE_NORMAL;
|
|
}
|
|
|
|
static int da9055_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
struct da9055_volt_reg volt = info->volt;
|
|
int val = 0;
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_NORMAL:
|
|
case REGULATOR_MODE_FAST:
|
|
val = DA9055_LDO_MODE_SYNC;
|
|
break;
|
|
case REGULATOR_MODE_STANDBY:
|
|
val = DA9055_LDO_MODE_SLEEP;
|
|
break;
|
|
}
|
|
|
|
return da9055_reg_update(regulator->da9055, volt.reg_b,
|
|
1 << volt.sl_shift,
|
|
val << volt.sl_shift);
|
|
}
|
|
|
|
static int da9055_buck_get_current_limit(struct regulator_dev *rdev)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int ret;
|
|
|
|
ret = da9055_reg_read(regulator->da9055, DA9055_REG_BUCK_LIM);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret &= info->mode.mask;
|
|
return da9055_current_limits[ret >> info->mode.shift];
|
|
}
|
|
|
|
static int da9055_buck_set_current_limit(struct regulator_dev *rdev, int min_uA,
|
|
int max_uA)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int i;
|
|
|
|
for (i = ARRAY_SIZE(da9055_current_limits) - 1; i >= 0; i--) {
|
|
if ((min_uA <= da9055_current_limits[i]) &&
|
|
(da9055_current_limits[i] <= max_uA))
|
|
return da9055_reg_update(regulator->da9055,
|
|
DA9055_REG_BUCK_LIM,
|
|
info->mode.mask,
|
|
i << info->mode.shift);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int da9055_regulator_get_voltage_sel(struct regulator_dev *rdev)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
struct da9055_volt_reg volt = info->volt;
|
|
int ret, sel;
|
|
|
|
/*
|
|
* There are two voltage register set A & B for voltage ramping but
|
|
* either one of then can be active therefore we first determine
|
|
* the active register set.
|
|
*/
|
|
ret = da9055_reg_read(regulator->da9055, info->conf.reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret &= info->conf.sel_mask;
|
|
|
|
/* Get the voltage for the active register set A/B */
|
|
if (ret == DA9055_REGUALTOR_SET_A)
|
|
ret = da9055_reg_read(regulator->da9055, volt.reg_a);
|
|
else
|
|
ret = da9055_reg_read(regulator->da9055, volt.reg_b);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
sel = (ret & volt.v_mask);
|
|
return sel;
|
|
}
|
|
|
|
static int da9055_regulator_set_voltage_sel(struct regulator_dev *rdev,
|
|
unsigned int selector)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int ret;
|
|
|
|
/*
|
|
* Regulator register set A/B is not selected through GPIO therefore
|
|
* we use default register set A for voltage ramping.
|
|
*/
|
|
if (regulator->reg_rselect == NO_GPIO) {
|
|
/* Select register set A */
|
|
ret = da9055_reg_update(regulator->da9055, info->conf.reg,
|
|
info->conf.sel_mask, DA9055_SEL_REG_A);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set the voltage */
|
|
return da9055_reg_update(regulator->da9055, info->volt.reg_a,
|
|
info->volt.v_mask, selector);
|
|
}
|
|
|
|
/*
|
|
* Here regulator register set A/B is selected through GPIO.
|
|
* Therefore we first determine the selected register set A/B and
|
|
* then set the desired voltage for that register set A/B.
|
|
*/
|
|
ret = da9055_reg_read(regulator->da9055, info->conf.reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret &= info->conf.sel_mask;
|
|
|
|
/* Set the voltage */
|
|
if (ret == DA9055_REGUALTOR_SET_A)
|
|
return da9055_reg_update(regulator->da9055, info->volt.reg_a,
|
|
info->volt.v_mask, selector);
|
|
else
|
|
return da9055_reg_update(regulator->da9055, info->volt.reg_b,
|
|
info->volt.v_mask, selector);
|
|
}
|
|
|
|
static int da9055_regulator_set_suspend_voltage(struct regulator_dev *rdev,
|
|
int uV)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int ret;
|
|
|
|
/* Select register set B for suspend voltage ramping. */
|
|
if (regulator->reg_rselect == NO_GPIO) {
|
|
ret = da9055_reg_update(regulator->da9055, info->conf.reg,
|
|
info->conf.sel_mask, DA9055_SEL_REG_B);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
ret = regulator_map_voltage_linear(rdev, uV, uV);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return da9055_reg_update(regulator->da9055, info->volt.reg_b,
|
|
info->volt.v_mask, ret);
|
|
}
|
|
|
|
static int da9055_suspend_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
|
|
/* Select register set B for voltage ramping. */
|
|
if (regulator->reg_rselect == NO_GPIO)
|
|
return da9055_reg_update(regulator->da9055, info->conf.reg,
|
|
info->conf.sel_mask, DA9055_SEL_REG_B);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int da9055_suspend_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
|
|
/* Diselect register set B. */
|
|
if (regulator->reg_rselect == NO_GPIO)
|
|
return da9055_reg_update(regulator->da9055, info->conf.reg,
|
|
info->conf.sel_mask, DA9055_SEL_REG_A);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static struct regulator_ops da9055_buck_ops = {
|
|
.get_mode = da9055_buck_get_mode,
|
|
.set_mode = da9055_buck_set_mode,
|
|
|
|
.get_current_limit = da9055_buck_get_current_limit,
|
|
.set_current_limit = da9055_buck_set_current_limit,
|
|
|
|
.get_voltage_sel = da9055_regulator_get_voltage_sel,
|
|
.set_voltage_sel = da9055_regulator_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
|
|
.set_suspend_voltage = da9055_regulator_set_suspend_voltage,
|
|
.set_suspend_enable = da9055_suspend_enable,
|
|
.set_suspend_disable = da9055_suspend_disable,
|
|
.set_suspend_mode = da9055_buck_set_mode,
|
|
};
|
|
|
|
static struct regulator_ops da9055_ldo_ops = {
|
|
.get_mode = da9055_ldo_get_mode,
|
|
.set_mode = da9055_ldo_set_mode,
|
|
|
|
.get_voltage_sel = da9055_regulator_get_voltage_sel,
|
|
.set_voltage_sel = da9055_regulator_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
|
|
.set_suspend_voltage = da9055_regulator_set_suspend_voltage,
|
|
.set_suspend_enable = da9055_suspend_enable,
|
|
.set_suspend_disable = da9055_suspend_disable,
|
|
.set_suspend_mode = da9055_ldo_set_mode,
|
|
|
|
};
|
|
|
|
#define DA9055_LDO(_id, step, min, max, vbits, voffset) \
|
|
{\
|
|
.reg_desc = {\
|
|
.name = #_id,\
|
|
.ops = &da9055_ldo_ops,\
|
|
.type = REGULATOR_VOLTAGE,\
|
|
.id = DA9055_ID_##_id,\
|
|
.n_voltages = (max - min) / step + 1 + (voffset), \
|
|
.enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
|
|
.enable_mask = 1, \
|
|
.min_uV = (min) * 1000,\
|
|
.uV_step = (step) * 1000,\
|
|
.linear_min_sel = (voffset),\
|
|
.owner = THIS_MODULE,\
|
|
},\
|
|
.conf = {\
|
|
.reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
|
|
.sel_mask = (1 << 4),\
|
|
.en_mask = 1,\
|
|
},\
|
|
.volt = {\
|
|
.reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \
|
|
.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
|
|
.sl_shift = 7,\
|
|
.v_mask = (1 << (vbits)) - 1,\
|
|
},\
|
|
}
|
|
|
|
#define DA9055_BUCK(_id, step, min, max, vbits, voffset, mbits, sbits) \
|
|
{\
|
|
.reg_desc = {\
|
|
.name = #_id,\
|
|
.ops = &da9055_buck_ops,\
|
|
.type = REGULATOR_VOLTAGE,\
|
|
.id = DA9055_ID_##_id,\
|
|
.n_voltages = (max - min) / step + 1 + (voffset), \
|
|
.enable_reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
|
|
.enable_mask = 1,\
|
|
.min_uV = (min) * 1000,\
|
|
.uV_step = (step) * 1000,\
|
|
.linear_min_sel = (voffset),\
|
|
.owner = THIS_MODULE,\
|
|
},\
|
|
.conf = {\
|
|
.reg = DA9055_REG_BCORE_CONT + DA9055_ID_##_id, \
|
|
.sel_mask = (1 << 4),\
|
|
.en_mask = 1,\
|
|
},\
|
|
.volt = {\
|
|
.reg_a = DA9055_REG_VBCORE_A + DA9055_ID_##_id, \
|
|
.reg_b = DA9055_REG_VBCORE_B + DA9055_ID_##_id, \
|
|
.sl_shift = 7,\
|
|
.v_mask = (1 << (vbits)) - 1,\
|
|
},\
|
|
.mode = {\
|
|
.reg = DA9055_REG_BCORE_MODE,\
|
|
.mask = (mbits),\
|
|
.shift = (sbits),\
|
|
},\
|
|
}
|
|
|
|
static struct da9055_regulator_info da9055_regulator_info[] = {
|
|
DA9055_BUCK(BUCK1, 25, 725, 2075, 6, 9, 0xc, 2),
|
|
DA9055_BUCK(BUCK2, 25, 925, 2500, 6, 0, 3, 0),
|
|
DA9055_LDO(LDO1, 50, 900, 3300, 6, 2),
|
|
DA9055_LDO(LDO2, 50, 900, 3300, 6, 3),
|
|
DA9055_LDO(LDO3, 50, 900, 3300, 6, 2),
|
|
DA9055_LDO(LDO4, 50, 900, 3300, 6, 2),
|
|
DA9055_LDO(LDO5, 50, 900, 2750, 6, 2),
|
|
DA9055_LDO(LDO6, 20, 900, 3300, 7, 0),
|
|
};
|
|
|
|
/*
|
|
* Configures regulator to be controlled either through GPIO 1 or 2.
|
|
* GPIO can control regulator state and/or select the regulator register
|
|
* set A/B for voltage ramping.
|
|
*/
|
|
static int da9055_gpio_init(struct da9055_regulator *regulator,
|
|
struct regulator_config *config,
|
|
struct da9055_pdata *pdata, int id)
|
|
{
|
|
struct da9055_regulator_info *info = regulator->info;
|
|
int ret = 0;
|
|
|
|
if (!pdata)
|
|
return 0;
|
|
|
|
if (pdata->gpio_ren && pdata->gpio_ren[id]) {
|
|
char name[18];
|
|
int gpio_mux = pdata->gpio_ren[id];
|
|
|
|
config->ena_gpio = pdata->ena_gpio[id];
|
|
config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
|
|
config->ena_gpio_invert = 1;
|
|
|
|
/*
|
|
* GPI pin is muxed with regulator to control the
|
|
* regulator state.
|
|
*/
|
|
sprintf(name, "DA9055 GPI %d", gpio_mux);
|
|
ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN,
|
|
name);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
/*
|
|
* Let the regulator know that its state is controlled
|
|
* through GPI.
|
|
*/
|
|
ret = da9055_reg_update(regulator->da9055, info->conf.reg,
|
|
DA9055_E_GPI_MASK,
|
|
pdata->reg_ren[id]
|
|
<< DA9055_E_GPI_SHIFT);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
if (pdata->gpio_rsel && pdata->gpio_rsel[id]) {
|
|
char name[18];
|
|
int gpio_mux = pdata->gpio_rsel[id];
|
|
|
|
regulator->reg_rselect = pdata->reg_rsel[id];
|
|
|
|
/*
|
|
* GPI pin is muxed with regulator to select the
|
|
* regulator register set A/B for voltage ramping.
|
|
*/
|
|
sprintf(name, "DA9055 GPI %d", gpio_mux);
|
|
ret = devm_gpio_request_one(config->dev, gpio_mux, GPIOF_DIR_IN,
|
|
name);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
/*
|
|
* Let the regulator know that its register set A/B
|
|
* will be selected through GPI for voltage ramping.
|
|
*/
|
|
ret = da9055_reg_update(regulator->da9055, info->conf.reg,
|
|
DA9055_V_GPI_MASK,
|
|
pdata->reg_rsel[id]
|
|
<< DA9055_V_GPI_SHIFT);
|
|
}
|
|
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t da9055_ldo5_6_oc_irq(int irq, void *data)
|
|
{
|
|
struct da9055_regulator *regulator = data;
|
|
|
|
regulator_notifier_call_chain(regulator->rdev,
|
|
REGULATOR_EVENT_OVER_CURRENT, NULL);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static inline struct da9055_regulator_info *find_regulator_info(int id)
|
|
{
|
|
struct da9055_regulator_info *info;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(da9055_regulator_info); i++) {
|
|
info = &da9055_regulator_info[i];
|
|
if (info->reg_desc.id == id)
|
|
return info;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static struct of_regulator_match da9055_reg_matches[] = {
|
|
{ .name = "BUCK1", },
|
|
{ .name = "BUCK2", },
|
|
{ .name = "LDO1", },
|
|
{ .name = "LDO2", },
|
|
{ .name = "LDO3", },
|
|
{ .name = "LDO4", },
|
|
{ .name = "LDO5", },
|
|
{ .name = "LDO6", },
|
|
};
|
|
|
|
static int da9055_regulator_dt_init(struct platform_device *pdev,
|
|
struct da9055_regulator *regulator,
|
|
struct regulator_config *config,
|
|
int regid)
|
|
{
|
|
struct device_node *nproot, *np;
|
|
int ret;
|
|
|
|
nproot = of_node_get(pdev->dev.parent->of_node);
|
|
if (!nproot)
|
|
return -ENODEV;
|
|
|
|
np = of_get_child_by_name(nproot, "regulators");
|
|
if (!np)
|
|
return -ENODEV;
|
|
|
|
ret = of_regulator_match(&pdev->dev, np, &da9055_reg_matches[regid], 1);
|
|
of_node_put(nproot);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Error matching regulator: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
config->init_data = da9055_reg_matches[regid].init_data;
|
|
config->of_node = da9055_reg_matches[regid].of_node;
|
|
|
|
if (!config->of_node)
|
|
return -ENODEV;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
static inline int da9055_regulator_dt_init(struct platform_device *pdev,
|
|
struct da9055_regulator *regulator,
|
|
struct regulator_config *config,
|
|
int regid)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif /* CONFIG_OF */
|
|
|
|
static int da9055_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct regulator_config config = { };
|
|
struct da9055_regulator *regulator;
|
|
struct da9055 *da9055 = dev_get_drvdata(pdev->dev.parent);
|
|
struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
|
|
int ret, irq;
|
|
|
|
regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator),
|
|
GFP_KERNEL);
|
|
if (!regulator)
|
|
return -ENOMEM;
|
|
|
|
regulator->info = find_regulator_info(pdev->id);
|
|
if (regulator->info == NULL) {
|
|
dev_err(&pdev->dev, "invalid regulator ID specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
regulator->da9055 = da9055;
|
|
config.dev = &pdev->dev;
|
|
config.driver_data = regulator;
|
|
config.regmap = da9055->regmap;
|
|
|
|
if (pdata && pdata->regulators) {
|
|
config.init_data = pdata->regulators[pdev->id];
|
|
} else {
|
|
ret = da9055_regulator_dt_init(pdev, regulator, &config,
|
|
pdev->id);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
ret = da9055_gpio_init(regulator, &config, pdata, pdev->id);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
regulator->rdev = devm_regulator_register(&pdev->dev,
|
|
®ulator->info->reg_desc,
|
|
&config);
|
|
if (IS_ERR(regulator->rdev)) {
|
|
dev_err(&pdev->dev, "Failed to register regulator %s\n",
|
|
regulator->info->reg_desc.name);
|
|
return PTR_ERR(regulator->rdev);
|
|
}
|
|
|
|
/* Only LDO 5 and 6 has got the over current interrupt */
|
|
if (pdev->id == DA9055_ID_LDO5 || pdev->id == DA9055_ID_LDO6) {
|
|
irq = platform_get_irq_byname(pdev, "REGULATOR");
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
|
|
da9055_ldo5_6_oc_irq,
|
|
IRQF_TRIGGER_HIGH |
|
|
IRQF_ONESHOT |
|
|
IRQF_PROBE_SHARED,
|
|
pdev->name, regulator);
|
|
if (ret != 0) {
|
|
if (ret != -EBUSY) {
|
|
dev_err(&pdev->dev,
|
|
"Failed to request Regulator IRQ %d: %d\n",
|
|
irq, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
platform_set_drvdata(pdev, regulator);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver da9055_regulator_driver = {
|
|
.probe = da9055_regulator_probe,
|
|
.driver = {
|
|
.name = "da9055-regulator",
|
|
},
|
|
};
|
|
|
|
static int __init da9055_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&da9055_regulator_driver);
|
|
}
|
|
subsys_initcall(da9055_regulator_init);
|
|
|
|
static void __exit da9055_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&da9055_regulator_driver);
|
|
}
|
|
module_exit(da9055_regulator_exit);
|
|
|
|
MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
|
|
MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9055 PMIC");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:da9055-regulator");
|