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    Subject[PATCH V2 7/7] regulator: PCF50633 pmic driver
    Date
    Changes from V1:
    - Removed support for suspend_enable & suspend_disable functions.

    Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
    Cc: Andy Green <andy@openmoko.com>
    Cc: Liam Girdwood <lrg@simlogic.co.uk>
    Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
    ---
    drivers/regulator/Kconfig | 7 +
    drivers/regulator/Makefile | 1
    drivers/regulator/pcf50633-regulator.c | 330 ++++++++++++++++++++++++++++++++
    include/linux/mfd/pcf50633/pmic.h | 68 +++++++
    4 files changed, 406 insertions(+), 0 deletions(-)
    create mode 100644 drivers/regulator/pcf50633-regulator.c
    create mode 100644 include/linux/mfd/pcf50633/pmic.h

    diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
    index 39360e2..e7e0cf1 100644
    --- a/drivers/regulator/Kconfig
    +++ b/drivers/regulator/Kconfig
    @@ -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
    diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
    index 254d40c..61b30c6 100644
    --- a/drivers/regulator/Makefile
    +++ b/drivers/regulator/Makefile
    @@ -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
    diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c
    new file mode 100644
    index 0000000..7a5d732
    --- /dev/null
    +++ b/drivers/regulator/pcf50633-regulator.c
    @@ -0,0 +1,330 @@
    +/* 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");
    diff --git a/include/linux/mfd/pcf50633/pmic.h b/include/linux/mfd/pcf50633/pmic.h
    new file mode 100644
    index 0000000..8c567a1
    --- /dev/null
    +++ b/include/linux/mfd/pcf50633/pmic.h
    @@ -0,0 +1,68 @@
    +#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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