3a93f2a9f4
Change the interface used by set_voltage() to report the selected value to the regulator core in terms of a selector used by list_voltage(). This allows the regulator core to know the voltage that was chosen without having to do an explict get_voltage(), which would be much more expensive as it will generally access hardware. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
476 lines
15 KiB
C
476 lines
15 KiB
C
/*
|
|
* Regulators driver for Marvell 88PM8607
|
|
*
|
|
* Copyright (C) 2009 Marvell International Ltd.
|
|
* Haojian Zhuang <haojian.zhuang@marvell.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/mfd/88pm860x.h>
|
|
|
|
struct pm8607_regulator_info {
|
|
struct regulator_desc desc;
|
|
struct pm860x_chip *chip;
|
|
struct regulator_dev *regulator;
|
|
struct i2c_client *i2c;
|
|
|
|
unsigned int *vol_table;
|
|
unsigned int *vol_suspend;
|
|
|
|
int vol_reg;
|
|
int vol_shift;
|
|
int vol_nbits;
|
|
int update_reg;
|
|
int update_bit;
|
|
int enable_reg;
|
|
int enable_bit;
|
|
int slope_double;
|
|
};
|
|
|
|
static const unsigned int BUCK1_table[] = {
|
|
725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
|
|
925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
|
|
1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
|
|
1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
};
|
|
|
|
static const unsigned int BUCK1_suspend_table[] = {
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
|
|
1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
|
|
1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
|
|
1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
|
|
};
|
|
|
|
static const unsigned int BUCK2_table[] = {
|
|
0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
|
|
400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
|
|
800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
|
|
1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
|
|
1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
|
|
2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
|
|
2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
|
|
2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
|
|
};
|
|
|
|
static const unsigned int BUCK2_suspend_table[] = {
|
|
0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
|
|
400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
|
|
800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
|
|
1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
|
|
1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
|
|
2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
|
|
2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
|
|
2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
|
|
};
|
|
|
|
static const unsigned int BUCK3_table[] = {
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
|
|
1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
|
|
1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
|
|
1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
|
|
};
|
|
|
|
static const unsigned int BUCK3_suspend_table[] = {
|
|
0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
|
|
200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
|
|
400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
|
|
600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
|
|
800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
|
|
1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
|
|
1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
|
|
1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
|
|
};
|
|
|
|
static const unsigned int LDO1_table[] = {
|
|
1800000, 1200000, 2800000, 0,
|
|
};
|
|
|
|
static const unsigned int LDO1_suspend_table[] = {
|
|
1800000, 1200000, 0, 0,
|
|
};
|
|
|
|
static const unsigned int LDO2_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO2_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO3_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO3_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO4_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO4_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO5_table[] = {
|
|
2900000, 3000000, 3100000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO5_suspend_table[] = {
|
|
2900000, 0, 0, 0,
|
|
};
|
|
|
|
static const unsigned int LDO6_table[] = {
|
|
1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO6_suspend_table[] = {
|
|
1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO7_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO7_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO8_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO8_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO9_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO9_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
};
|
|
|
|
static const unsigned int LDO10_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO10_suspend_table[] = {
|
|
1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO12_table[] = {
|
|
1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO12_suspend_table[] = {
|
|
1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
|
|
1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
|
|
};
|
|
|
|
static const unsigned int LDO13_table[] = {
|
|
1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 0,
|
|
};
|
|
|
|
static const unsigned int LDO13_suspend_table[] = {
|
|
0,
|
|
};
|
|
|
|
static const unsigned int LDO14_table[] = {
|
|
1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
|
|
};
|
|
|
|
static const unsigned int LDO14_suspend_table[] = {
|
|
1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
|
|
};
|
|
|
|
static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
int ret = -EINVAL;
|
|
|
|
if (info->vol_table && (index < (1 << info->vol_nbits))) {
|
|
ret = info->vol_table[index];
|
|
if (info->slope_double)
|
|
ret <<= 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
int i, ret = -ENOENT;
|
|
|
|
if (info->slope_double) {
|
|
min_uV = min_uV >> 1;
|
|
max_uV = max_uV >> 1;
|
|
}
|
|
if (info->vol_table) {
|
|
for (i = 0; i < (1 << info->vol_nbits); i++) {
|
|
if (!info->vol_table[i])
|
|
break;
|
|
if ((min_uV <= info->vol_table[i])
|
|
&& (max_uV >= info->vol_table[i])) {
|
|
ret = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ret < 0)
|
|
pr_err("invalid voltage range (%d %d) uV\n", min_uV, max_uV);
|
|
return ret;
|
|
}
|
|
|
|
static int pm8607_set_voltage(struct regulator_dev *rdev,
|
|
int min_uV, int max_uV, unsigned *selector)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
uint8_t val, mask;
|
|
int ret;
|
|
|
|
if (min_uV > max_uV) {
|
|
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = choose_voltage(rdev, min_uV, max_uV);
|
|
if (ret < 0)
|
|
return -EINVAL;
|
|
*selector = ret;
|
|
val = (uint8_t)(ret << info->vol_shift);
|
|
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
|
|
|
|
ret = pm860x_set_bits(info->i2c, info->vol_reg, mask, val);
|
|
if (ret)
|
|
return ret;
|
|
switch (info->desc.id) {
|
|
case PM8607_ID_BUCK1:
|
|
case PM8607_ID_BUCK3:
|
|
ret = pm860x_set_bits(info->i2c, info->update_reg,
|
|
1 << info->update_bit,
|
|
1 << info->update_bit);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int pm8607_get_voltage(struct regulator_dev *rdev)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
uint8_t val, mask;
|
|
int ret;
|
|
|
|
ret = pm860x_reg_read(info->i2c, info->vol_reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
|
|
val = ((unsigned char)ret & mask) >> info->vol_shift;
|
|
|
|
return pm8607_list_voltage(rdev, val);
|
|
}
|
|
|
|
static int pm8607_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
|
|
return pm860x_set_bits(info->i2c, info->enable_reg,
|
|
1 << info->enable_bit,
|
|
1 << info->enable_bit);
|
|
}
|
|
|
|
static int pm8607_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
|
|
return pm860x_set_bits(info->i2c, info->enable_reg,
|
|
1 << info->enable_bit, 0);
|
|
}
|
|
|
|
static int pm8607_is_enabled(struct regulator_dev *rdev)
|
|
{
|
|
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
|
|
int ret;
|
|
|
|
ret = pm860x_reg_read(info->i2c, info->enable_reg);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return !!((unsigned char)ret & (1 << info->enable_bit));
|
|
}
|
|
|
|
static struct regulator_ops pm8607_regulator_ops = {
|
|
.set_voltage = pm8607_set_voltage,
|
|
.get_voltage = pm8607_get_voltage,
|
|
.enable = pm8607_enable,
|
|
.disable = pm8607_disable,
|
|
.is_enabled = pm8607_is_enabled,
|
|
};
|
|
|
|
#define PM8607_DVC(vreg, nbits, ureg, ubit, ereg, ebit) \
|
|
{ \
|
|
.desc = { \
|
|
.name = #vreg, \
|
|
.ops = &pm8607_regulator_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.id = PM8607_ID_##vreg, \
|
|
.owner = THIS_MODULE, \
|
|
}, \
|
|
.vol_reg = PM8607_##vreg, \
|
|
.vol_shift = (0), \
|
|
.vol_nbits = (nbits), \
|
|
.update_reg = PM8607_##ureg, \
|
|
.update_bit = (ubit), \
|
|
.enable_reg = PM8607_##ereg, \
|
|
.enable_bit = (ebit), \
|
|
.slope_double = (0), \
|
|
.vol_table = (unsigned int *)&vreg##_table, \
|
|
.vol_suspend = (unsigned int *)&vreg##_suspend_table, \
|
|
}
|
|
|
|
#define PM8607_LDO(_id, vreg, shift, nbits, ereg, ebit) \
|
|
{ \
|
|
.desc = { \
|
|
.name = "LDO" #_id, \
|
|
.ops = &pm8607_regulator_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.id = PM8607_ID_LDO##_id, \
|
|
.owner = THIS_MODULE, \
|
|
}, \
|
|
.vol_reg = PM8607_##vreg, \
|
|
.vol_shift = (shift), \
|
|
.vol_nbits = (nbits), \
|
|
.enable_reg = PM8607_##ereg, \
|
|
.enable_bit = (ebit), \
|
|
.slope_double = (0), \
|
|
.vol_table = (unsigned int *)&LDO##_id##_table, \
|
|
.vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
|
|
}
|
|
|
|
static struct pm8607_regulator_info pm8607_regulator_info[] = {
|
|
PM8607_DVC(BUCK1, 6, GO, 0, SUPPLIES_EN11, 0),
|
|
PM8607_DVC(BUCK2, 6, GO, 1, SUPPLIES_EN11, 1),
|
|
PM8607_DVC(BUCK3, 6, GO, 2, SUPPLIES_EN11, 2),
|
|
|
|
PM8607_LDO( 1, LDO1, 0, 2, SUPPLIES_EN11, 3),
|
|
PM8607_LDO( 2, LDO2, 0, 3, SUPPLIES_EN11, 4),
|
|
PM8607_LDO( 3, LDO3, 0, 3, SUPPLIES_EN11, 5),
|
|
PM8607_LDO( 4, LDO4, 0, 3, SUPPLIES_EN11, 6),
|
|
PM8607_LDO( 5, LDO5, 0, 2, SUPPLIES_EN11, 7),
|
|
PM8607_LDO( 6, LDO6, 0, 3, SUPPLIES_EN12, 0),
|
|
PM8607_LDO( 7, LDO7, 0, 3, SUPPLIES_EN12, 1),
|
|
PM8607_LDO( 8, LDO8, 0, 3, SUPPLIES_EN12, 2),
|
|
PM8607_LDO( 9, LDO9, 0, 3, SUPPLIES_EN12, 3),
|
|
PM8607_LDO(10, LDO10, 0, 3, SUPPLIES_EN12, 4),
|
|
PM8607_LDO(12, LDO12, 0, 4, SUPPLIES_EN12, 5),
|
|
PM8607_LDO(13, VIBRATOR_SET, 1, 3, VIBRATOR_SET, 0),
|
|
PM8607_LDO(14, LDO14, 0, 4, SUPPLIES_EN12, 6),
|
|
};
|
|
|
|
static inline struct pm8607_regulator_info *find_regulator_info(int id)
|
|
{
|
|
struct pm8607_regulator_info *info;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
|
|
info = &pm8607_regulator_info[i];
|
|
if (info->desc.id == id)
|
|
return info;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
|
|
struct pm860x_platform_data *pdata = chip->dev->platform_data;
|
|
struct pm8607_regulator_info *info = NULL;
|
|
|
|
info = find_regulator_info(pdev->id);
|
|
if (info == NULL) {
|
|
dev_err(&pdev->dev, "invalid regulator ID specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
|
|
info->chip = chip;
|
|
|
|
info->regulator = regulator_register(&info->desc, &pdev->dev,
|
|
pdata->regulator[pdev->id], info);
|
|
if (IS_ERR(info->regulator)) {
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
info->desc.name);
|
|
return PTR_ERR(info->regulator);
|
|
}
|
|
|
|
/* check DVC ramp slope double */
|
|
if (info->desc.id == PM8607_ID_BUCK3)
|
|
if (info->chip->buck3_double)
|
|
info->slope_double = 1;
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
regulator_unregister(info->regulator);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver pm8607_regulator_driver = {
|
|
.driver = {
|
|
.name = "88pm860x-regulator",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = pm8607_regulator_probe,
|
|
.remove = __devexit_p(pm8607_regulator_remove),
|
|
};
|
|
|
|
static int __init pm8607_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&pm8607_regulator_driver);
|
|
}
|
|
subsys_initcall(pm8607_regulator_init);
|
|
|
|
static void __exit pm8607_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&pm8607_regulator_driver);
|
|
}
|
|
module_exit(pm8607_regulator_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
|
|
MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
|
|
MODULE_ALIAS("platform:88pm8607-regulator");
|