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Message-ID: <20081218100835.GA27075@rakim.wolfsonmicro.main>
Date: Thu, 18 Dec 2008 10:08:35 +0000
From: Mark Brown <broonie@...nsource.wolfsonmicro.com>
To: Balaji Rao <balajirrao@...nmoko.org>
Cc: linux-kernel@...r.kernel.org, Andy Green <andy@...nmoko.com>,
Liam Girdwood <lrg@...mlogic.co.uk>
Subject: Re: [PATCH V2 7/7] regulator: PCF50633 pmic driver
On Thu, Dec 18, 2008 at 11:28:17AM +0530, Balaji Rao wrote:
> Changes from V1:
> - Removed support for suspend_enable & suspend_disable functions.
>
> Signed-off-by: Balaji Rao <balajirrao@...nmoko.org>
> Cc: Andy Green <andy@...nmoko.com>
> Cc: Liam Girdwood <lrg@...logic.co.uk>
That should be slimlogic with two ls - fixed in the CCs and not cutting
any text for his benefit.
> Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Acked-by: Mark Brown <broonie@...nsource.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@...nmoko.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(®ulators[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@...nmoko.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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