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Merge branches 'topic/da9055' and 'topic/tps51632' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-min

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This commit is contained in:
Mark Brown 2012-11-27 20:08:14 +00:00
commit 5979b2a35f
6 changed files with 1109 additions and 3 deletions
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21
drivers/regulator/Kconfig
View File

@ -109,6 +109,16 @@ config REGULATOR_DA9052
This driver supports the voltage regulators of DA9052-BC and
DA9053-AA/Bx PMIC.
config REGULATOR_DA9055
tristate "Dialog Semiconductor DA9055 regulators"
depends on MFD_DA9055
help
Say y here to support the BUCKs and LDOs regulators found on
Dialog Semiconductor DA9055 PMIC.
This driver can also be built as a module. If so, the module
will be called da9055-regulator.
config REGULATOR_FAN53555
tristate "Fairchild FAN53555 Regulator"
depends on I2C
@ -335,6 +345,17 @@ config REGULATOR_PALMAS
on the muxing. This is handled automatically in the driver by
reading the mux info from OTP.
config REGULATOR_TPS51632
tristate "TI TPS51632 Power Regulator"
depends on I2C
select REGMAP_I2C
help
This driver supports TPS51632 voltage regulator chip.
The TPS51632 is 3-2-1 Phase D-Cap+ Step Down Driverless Controller
with Serial VID control and DVFS.
The voltage output can be configure through I2C interface or PWM
interface.
config REGULATOR_TPS6105X
tristate "TI TPS6105X Power regulators"
depends on TPS6105X

2
drivers/regulator/Makefile
View File

@ -18,6 +18,7 @@ obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o
obj-$(CONFIG_REGULATOR_DA9055) += da9055-regulator.o
obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o
obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o
@ -41,6 +42,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o

683
drivers/regulator/da9055-regulator.c Normal file
View File

@ -0,0 +1,683 @@
/*
* 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/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_offset;
int v_mask;
int v_shift;
};
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, val = 0;
if (min_uA > da9055_current_limits[DA9055_MAX_UA] ||
max_uA < da9055_current_limits[DA9055_MIN_UA])
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(da9055_current_limits); i++) {
if (min_uA <= da9055_current_limits[i]) {
val = i;
break;
}
}
return da9055_reg_update(regulator->da9055, DA9055_REG_BUCK_LIM,
info->mode.mask, val << info->mode.shift);
}
static int da9055_list_voltage(struct regulator_dev *rdev, unsigned selector)
{
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
struct da9055_regulator_info *info = regulator->info;
if (selector >= rdev->desc->n_voltages)
return -EINVAL;
if (selector < info->volt.v_offset)
return 0;
selector -= info->volt.v_offset;
return rdev->desc->min_uV + (rdev->desc->uV_step * selector);
}
static int da9055_map_voltage(struct regulator_dev *rdev, int min_uV,
int max_uV)
{
struct da9055_regulator *regulator = rdev_get_drvdata(rdev);
struct da9055_regulator_info *info = regulator->info;
int sel, voltage;
if (min_uV < rdev->desc->min_uV)
min_uV = rdev->desc->min_uV;
sel = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
sel += info->volt.v_offset;
voltage = da9055_list_voltage(rdev, sel);
if (voltage < min_uV || voltage > max_uV)
return -EINVAL;
return sel;
}
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);
if (sel <= volt.v_offset)
return 0;
else
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 = da9055_map_voltage(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 = da9055_list_voltage,
.map_voltage = da9055_map_voltage,
.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 = da9055_list_voltage,
.map_voltage = da9055_map_voltage,
.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,\
.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_offset = (voffset),\
.v_mask = (1 << (vbits)) - 1,\
.v_shift = (vbits),\
},\
}
#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,\
.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_offset = (voffset),\
.v_mask = (1 << (vbits)) - 1,\
.v_shift = (vbits),\
},\
.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 __devinit 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->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;
}
static int __devinit 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 = da9055->dev->platform_data;
int ret, irq;
if (pdata == NULL || pdata->regulators[pdev->id] == NULL)
return -ENODEV;
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];
ret = da9055_gpio_init(regulator, &config, pdata, pdev->id);
if (ret < 0)
return ret;
regulator->rdev = regulator_register(&regulator->info->reg_desc,
&config);
if (IS_ERR(regulator->rdev)) {
dev_err(&pdev->dev, "Failed to register regulator %s\n",
regulator->info->reg_desc.name);
ret = PTR_ERR(regulator->rdev);
return ret;
}
/* 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");
irq = regmap_irq_get_virq(da9055->irq_data, 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);
goto err_regulator;
}
}
}
platform_set_drvdata(pdev, regulator);
return 0;
err_regulator:
regulator_unregister(regulator->rdev);
return ret;
}
static int __devexit da9055_regulator_remove(struct platform_device *pdev)
{
struct da9055_regulator *regulator = platform_get_drvdata(pdev);
regulator_unregister(regulator->rdev);
return 0;
}
static struct platform_driver da9055_regulator_driver = {
.probe = da9055_regulator_probe,
.remove = __devexit_p(da9055_regulator_remove),
.driver = {
.name = "da9055-regulator",
.owner = THIS_MODULE,
},
};
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");

332
drivers/regulator/tps51632-regulator.c Normal file
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@ -0,0 +1,332 @@
/*
* tps51632-regulator.c -- TI TPS51632
*
* Regulator driver for TPS51632 3-2-1 Phase D-Cap Step Down Driverless
* Controller with serial VID control and DVFS.
*
* Copyright (c) 2012, NVIDIA Corporation.
*
* Author: Laxman Dewangan <ldewangan@nvidia.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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
* whether express or implied; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307, USA
*/
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/tps51632-regulator.h>
#include <linux/slab.h>
/* Register definitions */
#define TPS51632_VOLTAGE_SELECT_REG 0x0
#define TPS51632_VOLTAGE_BASE_REG 0x1
#define TPS51632_OFFSET_REG 0x2
#define TPS51632_IMON_REG 0x3
#define TPS51632_VMAX_REG 0x4
#define TPS51632_DVFS_CONTROL_REG 0x5
#define TPS51632_POWER_STATE_REG 0x6
#define TPS51632_SLEW_REGS 0x7
#define TPS51632_FAULT_REG 0x14
#define TPS51632_MAX_REG 0x15
#define TPS51632_VOUT_MASK 0x7F
#define TPS51632_VOUT_OFFSET_MASK 0x1F
#define TPS51632_VMAX_MASK 0x7F
#define TPS51632_VMAX_LOCK 0x80
/* TPS51632_DVFS_CONTROL_REG */
#define TPS51632_DVFS_PWMEN 0x1
#define TPS51632_DVFS_STEP_20 0x2
#define TPS51632_DVFS_VMAX_PG 0x4
#define TPS51632_DVFS_PWMRST 0x8
#define TPS51632_DVFS_OCA_EN 0x10
#define TPS51632_DVFS_FCCM 0x20
/* TPS51632_POWER_STATE_REG */
#define TPS51632_POWER_STATE_MASK 0x03
#define TPS51632_POWER_STATE_MULTI_PHASE_CCM 0x0
#define TPS51632_POWER_STATE_SINGLE_PHASE_CCM 0x1
#define TPS51632_POWER_STATE_SINGLE_PHASE_DCM 0x2
#define TPS51632_MIN_VOLATGE 500000
#define TPS51632_MAX_VOLATGE 1520000
#define TPS51632_VOLATGE_STEP_10mV 10000
#define TPS51632_VOLATGE_STEP_20mV 20000
#define TPS51632_MAX_VSEL 0x7F
#define TPS51632_MIN_VSEL 0x19
#define TPS51632_DEFAULT_RAMP_DELAY 6000
#define TPS51632_VOLT_VSEL(uV) \
(DIV_ROUND_UP(uV - TPS51632_MIN_VOLATGE, \
TPS51632_VOLATGE_STEP_10mV) + \
TPS51632_MIN_VSEL)
/* TPS51632 chip information */
struct tps51632_chip {
struct device *dev;
struct regulator_desc desc;
struct regulator_dev *rdev;
struct regmap *regmap;
bool enable_pwm_dvfs;
};
static int tps51632_dcdc_get_voltage_sel(struct regulator_dev *rdev)
{
struct tps51632_chip *tps = rdev_get_drvdata(rdev);
unsigned int data;
int ret;
unsigned int reg = TPS51632_VOLTAGE_SELECT_REG;
int vsel;
if (tps->enable_pwm_dvfs)
reg = TPS51632_VOLTAGE_BASE_REG;
ret = regmap_read(tps->regmap, reg, &data);
if (ret < 0) {
dev_err(tps->dev, "reg read failed, err %d\n", ret);
return ret;
}
vsel = data & TPS51632_VOUT_MASK;
if (vsel < TPS51632_MIN_VSEL)
return 0;
else
return vsel - TPS51632_MIN_VSEL;
}
static int tps51632_dcdc_set_voltage_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct tps51632_chip *tps = rdev_get_drvdata(rdev);
int vsel;
int ret;
unsigned int reg = TPS51632_VOLTAGE_SELECT_REG;
if (tps->enable_pwm_dvfs)
reg = TPS51632_VOLTAGE_BASE_REG;
vsel = selector + TPS51632_MIN_VSEL;
if (vsel > TPS51632_MAX_VSEL)
return -EINVAL;
ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_SELECT_REG, vsel);
if (ret < 0)
dev_err(tps->dev, "reg write failed, err %d\n", ret);
return ret;
}
static int tps51632_dcdc_set_ramp_delay(struct regulator_dev *rdev,
int ramp_delay)
{
struct tps51632_chip *tps = rdev_get_drvdata(rdev);
int bit = ramp_delay/6000;
int ret;
if (bit)
bit--;
ret = regmap_write(tps->regmap, TPS51632_SLEW_REGS, BIT(bit));
if (ret < 0)
dev_err(tps->dev, "SLEW reg write failed, err %d\n", ret);
return ret;
}
static struct regulator_ops tps51632_dcdc_ops = {
.get_voltage_sel = tps51632_dcdc_get_voltage_sel,
.set_voltage_sel = tps51632_dcdc_set_voltage_sel,
.list_voltage = regulator_list_voltage_linear,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = tps51632_dcdc_set_ramp_delay,
};
static int __devinit tps51632_init_dcdc(struct tps51632_chip *tps,
struct tps51632_regulator_platform_data *pdata)
{
int ret;
uint8_t control = 0;
int vsel;
if (!pdata->enable_pwm_dvfs)
goto skip_pwm_config;
control |= TPS51632_DVFS_PWMEN;
tps->enable_pwm_dvfs = pdata->enable_pwm_dvfs;
vsel = TPS51632_VOLT_VSEL(pdata->base_voltage_uV);
ret = regmap_write(tps->regmap, TPS51632_VOLTAGE_BASE_REG, vsel);
if (ret < 0) {
dev_err(tps->dev, "BASE reg write failed, err %d\n", ret);
return ret;
}
if (pdata->dvfs_step_20mV)
control |= TPS51632_DVFS_STEP_20;
if (pdata->max_voltage_uV) {
unsigned int vmax;
/**
* TPS51632 hw behavior: VMAX register can be write only
* once as it get locked after first write. The lock get
* reset only when device is power-reset.
* Write register only when lock bit is not enabled.
*/
ret = regmap_read(tps->regmap, TPS51632_VMAX_REG, &vmax);
if (ret < 0) {
dev_err(tps->dev, "VMAX read failed, err %d\n", ret);
return ret;
}
if (!(vmax & TPS51632_VMAX_LOCK)) {
vsel = TPS51632_VOLT_VSEL(pdata->max_voltage_uV);
ret = regmap_write(tps->regmap, TPS51632_VMAX_REG,
vsel);
if (ret < 0) {
dev_err(tps->dev,
"VMAX write failed, err %d\n", ret);
return ret;
}
}
}
skip_pwm_config:
ret = regmap_write(tps->regmap, TPS51632_DVFS_CONTROL_REG, control);
if (ret < 0)
dev_err(tps->dev, "DVFS reg write failed, err %d\n", ret);
return ret;
}
static bool rd_wr_reg(struct device *dev, unsigned int reg)
{
if ((reg >= 0x8) && (reg <= 0x10))
return false;
return true;
}
static const struct regmap_config tps51632_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.writeable_reg = rd_wr_reg,
.readable_reg = rd_wr_reg,
.max_register = TPS51632_MAX_REG - 1,
.cache_type = REGCACHE_RBTREE,
};
static int __devinit tps51632_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct tps51632_regulator_platform_data *pdata;
struct regulator_dev *rdev;
struct tps51632_chip *tps;
int ret;
struct regulator_config config = { };
pdata = client->dev.platform_data;
if (!pdata) {
dev_err(&client->dev, "No Platform data\n");
return -EINVAL;
}
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps) {
dev_err(&client->dev, "Memory allocation failed\n");
return -ENOMEM;
}
tps->dev = &client->dev;
tps->desc.name = id->name;
tps->desc.id = 0;
tps->desc.ramp_delay = TPS51632_DEFAULT_RAMP_DELAY;
tps->desc.min_uV = TPS51632_MIN_VOLATGE;
tps->desc.uV_step = TPS51632_VOLATGE_STEP_10mV;
tps->desc.n_voltages = (TPS51632_MAX_VSEL - TPS51632_MIN_VSEL) + 1;
tps->desc.ops = &tps51632_dcdc_ops;
tps->desc.type = REGULATOR_VOLTAGE;
tps->desc.owner = THIS_MODULE;
tps->regmap = devm_regmap_init_i2c(client, &tps51632_regmap_config);
if (IS_ERR(tps->regmap)) {
ret = PTR_ERR(tps->regmap);
dev_err(&client->dev, "regmap init failed, err %d\n", ret);
return ret;
}
i2c_set_clientdata(client, tps);
ret = tps51632_init_dcdc(tps, pdata);
if (ret < 0) {
dev_err(tps->dev, "Init failed, err = %d\n", ret);
return ret;
}
/* Register the regulators */
config.dev = &client->dev;
config.init_data = pdata->reg_init_data;
config.driver_data = tps;
config.regmap = tps->regmap;
config.of_node = client->dev.of_node;
rdev = regulator_register(&tps->desc, &config);
if (IS_ERR(rdev)) {
dev_err(tps->dev, "regulator register failed\n");
return PTR_ERR(rdev);
}
tps->rdev = rdev;
return 0;
}
static int __devexit tps51632_remove(struct i2c_client *client)
{
struct tps51632_chip *tps = i2c_get_clientdata(client);
regulator_unregister(tps->rdev);
return 0;
}
static const struct i2c_device_id tps51632_id[] = {
{.name = "tps51632",},
{},
};
MODULE_DEVICE_TABLE(i2c, tps51632_id);
static struct i2c_driver tps51632_i2c_driver = {
.driver = {
.name = "tps51632",
.owner = THIS_MODULE,
},
.probe = tps51632_probe,
.remove = __devexit_p(tps51632_remove),
.id_table = tps51632_id,
};
static int __init tps51632_init(void)
{
return i2c_add_driver(&tps51632_i2c_driver);
}
subsys_initcall(tps51632_init);
static void __exit tps51632_cleanup(void)
{
i2c_del_driver(&tps51632_i2c_driver);
}
module_exit(tps51632_cleanup);
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
MODULE_DESCRIPTION("TPS51632 voltage regulator driver");
MODULE_LICENSE("GPL v2");

27
include/linux/mfd/da9055/pdata.h
View File

@ -25,8 +25,29 @@ struct da9055_pdata {
int gpio_base;
struct regulator_init_data *regulators[DA9055_MAX_REGULATORS];
bool reset_enable; /* Enable RTC in RESET Mode */
enum gpio_select *gpio_rsel; /* Select regulator set thru GPIO 1/2 */
enum gpio_select *gpio_ren; /* Enable regulator thru GPIO 1/2 */
/* Enable RTC in RESET Mode */
bool reset_enable;
/*
* GPI muxed pin to control
* regulator state A/B, 0 if not available.
*/
int *gpio_ren;
/*
* GPI muxed pin to control
* regulator set, 0 if not available.
*/
int *gpio_rsel;
/*
* Regulator mode control bits value (GPI offset) that
* that controls the regulator state, 0 if not available.
*/
enum gpio_select *reg_ren;
/*
* Regulator mode control bits value (GPI offset) that
* controls the regulator set A/B, 0 if not available.
*/
enum gpio_select *reg_rsel;
/* GPIOs to enable regulator, 0 if not available */
int *ena_gpio;
};
#endif /* __DA9055_PDATA_H */

47
include/linux/regulator/tps51632-regulator.h Normal file
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@ -0,0 +1,47 @@
/*
* tps51632-regulator.h -- TPS51632 regulator
*
* Interface for regulator driver for TPS51632 3-2-1 Phase D-Cap Step Down
* Driverless Controller with serial VID control and DVFS.
*
* Copyright (C) 2012 NVIDIA Corporation
* Author: Laxman Dewangan <ldewangan@nvidia.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.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef __LINUX_REGULATOR_TPS51632_H
#define __LINUX_REGULATOR_TPS51632_H
/*
* struct tps51632_regulator_platform_data - tps51632 regulator platform data.
*
* @reg_init_data: The regulator init data.
* @enable_pwm_dvfs: Enable PWM DVFS or not.
* @dvfs_step_20mV: Step for DVFS is 20mV or 10mV.
* @max_voltage_uV: Maximum possible voltage in PWM-DVFS mode.
* @base_voltage_uV: Base voltage when PWM-DVFS enabled.
*/
struct tps51632_regulator_platform_data {
struct regulator_init_data *reg_init_data;
bool enable_pwm_dvfs;
bool dvfs_step_20mV;
int max_voltage_uV;
int base_voltage_uV;
};
#endif /* __LINUX_REGULATOR_TPS51632_H */