Commit 5ec271e7 authored by Balaji Rao's avatar Balaji Rao Committed by Samuel Ortiz

regulator: PCF50633 pmic driver

Changes from V1:
	- Removed support for suspend_enable & suspend_disable functions.
Signed-off-by: default avatarBalaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Acked-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@openedhand.com>
parent 1851b06a
......@@ -73,4 +73,11 @@ config REGULATOR_DA903X
Say y here to support the BUCKs and LDOs regulators found on
Dialog Semiconductor DA9030/DA9034 PMIC.
config REGULATOR_PCF50633
tristate "PCF50633 regulator driver"
depends on MFD_PCF50633
help
Say Y here to support the voltage regulators and convertors
on PCF50633
endif
......@@ -11,5 +11,6 @@ obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o
obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
/* NXP PCF50633 PMIC Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50633 driver mainly by
* Harald Welte and Andy Green and Werner Almesberger
*
* 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/device.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/pmic.h>
#define PCF50633_REGULATOR(_name, _id) \
{ \
.name = _name, \
.id = _id, \
.ops = &pcf50633_regulator_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}
static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {
[PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT,
[PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT,
[PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT,
[PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT,
[PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT,
[PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT,
[PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT,
[PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT,
[PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT,
[PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT,
[PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT,
};
/* Bits from voltage value */
static u8 auto_voltage_bits(unsigned int millivolts)
{
if (millivolts < 1800)
return 0;
if (millivolts > 3800)
return 0xff;
millivolts -= 625;
return millivolts / 25;
}
static u8 down_voltage_bits(unsigned int millivolts)
{
if (millivolts < 625)
return 0;
else if (millivolts > 3000)
return 0xff;
millivolts -= 625;
return millivolts / 25;
}
static u8 ldo_voltage_bits(unsigned int millivolts)
{
if (millivolts < 900)
return 0;
else if (millivolts > 3600)
return 0x1f;
millivolts -= 900;
return millivolts / 100;
}
/* Obtain voltage value from bits */
static unsigned int auto_voltage_value(u8 bits)
{
if (bits < 0x2f)
return 0;
return 625 + (bits * 25);
}
static unsigned int down_voltage_value(u8 bits)
{
return 625 + (bits * 25);
}
static unsigned int ldo_voltage_value(u8 bits)
{
bits &= 0x1f;
return 900 + (bits * 100);
}
static int pcf50633_regulator_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct pcf50633 *pcf;
int regulator_id, millivolts;
u8 volt_bits, regnr;
pcf = rdev_get_drvdata(rdev);
regulator_id = rdev_get_id(rdev);
if (regulator_id >= PCF50633_NUM_REGULATORS)
return -EINVAL;
millivolts = min_uV / 1000;
regnr = pcf50633_regulator_registers[regulator_id];
switch (regulator_id) {
case PCF50633_REGULATOR_AUTO:
volt_bits = auto_voltage_bits(millivolts);
break;
case PCF50633_REGULATOR_DOWN1:
volt_bits = down_voltage_bits(millivolts);
break;
case PCF50633_REGULATOR_DOWN2:
volt_bits = down_voltage_bits(millivolts);
break;
case PCF50633_REGULATOR_LDO1:
case PCF50633_REGULATOR_LDO2:
case PCF50633_REGULATOR_LDO3:
case PCF50633_REGULATOR_LDO4:
case PCF50633_REGULATOR_LDO5:
case PCF50633_REGULATOR_LDO6:
case PCF50633_REGULATOR_HCLDO:
volt_bits = ldo_voltage_bits(millivolts);
break;
default:
return -EINVAL;
}
return pcf50633_reg_write(pcf, regnr, volt_bits);
}
static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
{
struct pcf50633 *pcf;
int regulator_id, millivolts, volt_bits;
u8 regnr;
pcf = rdev_get_drvdata(rdev);;
regulator_id = rdev_get_id(rdev);
if (regulator_id >= PCF50633_NUM_REGULATORS)
return -EINVAL;
regnr = pcf50633_regulator_registers[regulator_id];
volt_bits = pcf50633_reg_read(pcf, regnr);
if (volt_bits < 0)
return -1;
switch (regulator_id) {
case PCF50633_REGULATOR_AUTO:
millivolts = auto_voltage_value(volt_bits);
break;
case PCF50633_REGULATOR_DOWN1:
millivolts = down_voltage_value(volt_bits);
break;
case PCF50633_REGULATOR_DOWN2:
millivolts = down_voltage_value(volt_bits);
break;
case PCF50633_REGULATOR_LDO1:
case PCF50633_REGULATOR_LDO2:
case PCF50633_REGULATOR_LDO3:
case PCF50633_REGULATOR_LDO4:
case PCF50633_REGULATOR_LDO5:
case PCF50633_REGULATOR_LDO6:
case PCF50633_REGULATOR_HCLDO:
millivolts = ldo_voltage_value(volt_bits);
break;
default:
return -EINVAL;
}
return millivolts * 1000;
}
static int pcf50633_regulator_enable(struct regulator_dev *rdev)
{
struct pcf50633 *pcf = rdev_get_drvdata(rdev);
int regulator_id;
u8 regnr;
regulator_id = rdev_get_id(rdev);
if (regulator_id >= PCF50633_NUM_REGULATORS)
return -EINVAL;
/* The *ENA register is always one after the *OUT register */
regnr = pcf50633_regulator_registers[regulator_id] + 1;
return pcf50633_reg_set_bit_mask(pcf, regnr, PCF50633_REGULATOR_ON,
PCF50633_REGULATOR_ON);
}
static int pcf50633_regulator_disable(struct regulator_dev *rdev)
{
struct pcf50633 *pcf = rdev_get_drvdata(rdev);
int regulator_id;
u8 regnr;
regulator_id = rdev_get_id(rdev);
if (regulator_id >= PCF50633_NUM_REGULATORS)
return -EINVAL;
/* the *ENA register is always one after the *OUT register */
regnr = pcf50633_regulator_registers[regulator_id] + 1;
return pcf50633_reg_set_bit_mask(pcf, regnr,
PCF50633_REGULATOR_ON, 0);
}
static int pcf50633_regulator_is_enabled(struct regulator_dev *rdev)
{
struct pcf50633 *pcf = rdev_get_drvdata(rdev);
int regulator_id = rdev_get_id(rdev);
u8 regnr;
regulator_id = rdev_get_id(rdev);
if (regulator_id >= PCF50633_NUM_REGULATORS)
return -EINVAL;
/* the *ENA register is always one after the *OUT register */
regnr = pcf50633_regulator_registers[regulator_id] + 1;
return pcf50633_reg_read(pcf, regnr) & PCF50633_REGULATOR_ON;
}
static struct regulator_ops pcf50633_regulator_ops = {
.set_voltage = pcf50633_regulator_set_voltage,
.get_voltage = pcf50633_regulator_get_voltage,
.enable = pcf50633_regulator_enable,
.disable = pcf50633_regulator_disable,
.is_enabled = pcf50633_regulator_is_enabled,
};
static struct regulator_desc regulators[] = {
[PCF50633_REGULATOR_AUTO] =
PCF50633_REGULATOR("auto", PCF50633_REGULATOR_AUTO),
[PCF50633_REGULATOR_DOWN1] =
PCF50633_REGULATOR("down1", PCF50633_REGULATOR_DOWN1),
[PCF50633_REGULATOR_DOWN2] =
PCF50633_REGULATOR("down2", PCF50633_REGULATOR_DOWN2),
[PCF50633_REGULATOR_LDO1] =
PCF50633_REGULATOR("ldo1", PCF50633_REGULATOR_LDO1),
[PCF50633_REGULATOR_LDO2] =
PCF50633_REGULATOR("ldo2", PCF50633_REGULATOR_LDO2),
[PCF50633_REGULATOR_LDO3] =
PCF50633_REGULATOR("ldo3", PCF50633_REGULATOR_LDO3),
[PCF50633_REGULATOR_LDO4] =
PCF50633_REGULATOR("ldo4", PCF50633_REGULATOR_LDO4),
[PCF50633_REGULATOR_LDO5] =
PCF50633_REGULATOR("ldo5", PCF50633_REGULATOR_LDO5),
[PCF50633_REGULATOR_LDO6] =
PCF50633_REGULATOR("ldo6", PCF50633_REGULATOR_LDO6),
[PCF50633_REGULATOR_HCLDO] =
PCF50633_REGULATOR("hcldo", PCF50633_REGULATOR_HCLDO),
[PCF50633_REGULATOR_MEMLDO] =
PCF50633_REGULATOR("memldo", PCF50633_REGULATOR_MEMLDO),
};
static int __devinit pcf50633_regulator_probe(struct platform_device *pdev)
{
struct regulator_dev *rdev;
struct pcf50633 *pcf;
/* Already set by core driver */
pcf = platform_get_drvdata(pdev);
rdev = regulator_register(&regulators[pdev->id], &pdev->dev, pcf);
if (IS_ERR(rdev))
return PTR_ERR(rdev);
if (pcf->pdata->regulator_registered)
pcf->pdata->regulator_registered(pcf, pdev->id);
return 0;
}
static int __devexit pcf50633_regulator_remove(struct platform_device *pdev)
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
regulator_unregister(rdev);
return 0;
}
static struct platform_driver pcf50633_regulator_driver = {
.driver = {
.name = "pcf50633-regltr",
},
.probe = pcf50633_regulator_probe,
.remove = __devexit_p(pcf50633_regulator_remove),
};
static int __init pcf50633_regulator_init(void)
{
return platform_driver_register(&pcf50633_regulator_driver);
}
module_init(pcf50633_regulator_init);
static void __exit pcf50633_regulator_exit(void)
{
platform_driver_unregister(&pcf50633_regulator_driver);
}
module_exit(pcf50633_regulator_exit);
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50633-regulator");
#ifndef __LINUX_MFD_PCF50633_PMIC_H
#define __LINUX_MFD_PCF50633_PMIC_H
#include <linux/mfd/pcf50633/core.h>
#include <linux/platform_device.h>
#define PCF50633_REG_AUTOOUT 0x1a
#define PCF50633_REG_AUTOENA 0x1b
#define PCF50633_REG_AUTOCTL 0x1c
#define PCF50633_REG_AUTOMXC 0x1d
#define PCF50633_REG_DOWN1OUT 0x1e
#define PCF50633_REG_DOWN1ENA 0x1f
#define PCF50633_REG_DOWN1CTL 0x20
#define PCF50633_REG_DOWN1MXC 0x21
#define PCF50633_REG_DOWN2OUT 0x22
#define PCF50633_REG_DOWN2ENA 0x23
#define PCF50633_REG_DOWN2CTL 0x24
#define PCF50633_REG_DOWN2MXC 0x25
#define PCF50633_REG_MEMLDOOUT 0x26
#define PCF50633_REG_MEMLDOENA 0x27
#define PCF50633_REG_LDO1OUT 0x2d
#define PCF50633_REG_LDO1ENA 0x2e
#define PCF50633_REG_LDO2OUT 0x2f
#define PCF50633_REG_LDO2ENA 0x30
#define PCF50633_REG_LDO3OUT 0x31
#define PCF50633_REG_LDO3ENA 0x32
#define PCF50633_REG_LDO4OUT 0x33
#define PCF50633_REG_LDO4ENA 0x34
#define PCF50633_REG_LDO5OUT 0x35
#define PCF50633_REG_LDO5ENA 0x36
#define PCF50633_REG_LDO6OUT 0x37
#define PCF50633_REG_LDO6ENA 0x38
#define PCF50633_REG_HCLDOOUT 0x39
#define PCF50633_REG_HCLDOENA 0x3a
#define PCF50633_REG_HCLDOOVL 0x40
enum pcf50633_regulator_enable {
PCF50633_REGULATOR_ON = 0x01,
PCF50633_REGULATOR_ON_GPIO1 = 0x02,
PCF50633_REGULATOR_ON_GPIO2 = 0x04,
PCF50633_REGULATOR_ON_GPIO3 = 0x08,
};
#define PCF50633_REGULATOR_ON_MASK 0x0f
enum pcf50633_regulator_phase {
PCF50633_REGULATOR_ACTPH1 = 0x00,
PCF50633_REGULATOR_ACTPH2 = 0x10,
PCF50633_REGULATOR_ACTPH3 = 0x20,
PCF50633_REGULATOR_ACTPH4 = 0x30,
};
#define PCF50633_REGULATOR_ACTPH_MASK 0x30
enum pcf50633_regulator_id {
PCF50633_REGULATOR_AUTO,
PCF50633_REGULATOR_DOWN1,
PCF50633_REGULATOR_DOWN2,
PCF50633_REGULATOR_LDO1,
PCF50633_REGULATOR_LDO2,
PCF50633_REGULATOR_LDO3,
PCF50633_REGULATOR_LDO4,
PCF50633_REGULATOR_LDO5,
PCF50633_REGULATOR_LDO6,
PCF50633_REGULATOR_HCLDO,
PCF50633_REGULATOR_MEMLDO,
};
#endif
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