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linux/drivers/regulator/tps6507x-regulator.c
Liam Girdwood 9e108d33ed regulator: tps650xx - build fixes for x86_64 
Fixes the following errors on both tps650xx regulator drivers :-

drivers/regulator/tps65023-regulator: struct i2c_device_id is 32 bytes.  The last of 1 is:
0x74 0x70 0x73 0x36 0x35 0x30 0x32 0x33 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
FATAL: drivers/regulator/tps65023-regulator: struct i2c_device_id is not terminated with a NULL entry!

This patch also fixes the GPL v2 licence string for both drivers.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2009-09-22 13:32:43 +01:00

715 lines
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/*
* tps6507x-regulator.c
*
* Regulator driver for TPS65073 PMIC
*
* Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/i2c.h>
#include <linux/delay.h>
/* Register definitions */
#define TPS6507X_REG_PPATH1 0X01
#define TPS6507X_REG_INT 0X02
#define TPS6507X_REG_CHGCONFIG0 0X03
#define TPS6507X_REG_CHGCONFIG1 0X04
#define TPS6507X_REG_CHGCONFIG2 0X05
#define TPS6507X_REG_CHGCONFIG3 0X06
#define TPS6507X_REG_REG_ADCONFIG 0X07
#define TPS6507X_REG_TSCMODE 0X08
#define TPS6507X_REG_ADRESULT_1 0X09
#define TPS6507X_REG_ADRESULT_2 0X0A
#define TPS6507X_REG_PGOOD 0X0B
#define TPS6507X_REG_PGOODMASK 0X0C
#define TPS6507X_REG_CON_CTRL1 0X0D
#define TPS6507X_REG_CON_CTRL2 0X0E
#define TPS6507X_REG_CON_CTRL3 0X0F
#define TPS6507X_REG_DEFDCDC1 0X10
#define TPS6507X_REG_DEFDCDC2_LOW 0X11
#define TPS6507X_REG_DEFDCDC2_HIGH 0X12
#define TPS6507X_REG_DEFDCDC3_LOW 0X13
#define TPS6507X_REG_DEFDCDC3_HIGH 0X14
#define TPS6507X_REG_DEFSLEW 0X15
#define TPS6507X_REG_LDO_CTRL1 0X16
#define TPS6507X_REG_DEFLDO2 0X17
#define TPS6507X_REG_WLED_CTRL1 0X18
#define TPS6507X_REG_WLED_CTRL2 0X19
/* CON_CTRL1 bitfields */
#define TPS6507X_CON_CTRL1_DCDC1_ENABLE BIT(4)
#define TPS6507X_CON_CTRL1_DCDC2_ENABLE BIT(3)
#define TPS6507X_CON_CTRL1_DCDC3_ENABLE BIT(2)
#define TPS6507X_CON_CTRL1_LDO1_ENABLE BIT(1)
#define TPS6507X_CON_CTRL1_LDO2_ENABLE BIT(0)
/* DEFDCDC1 bitfields */
#define TPS6507X_DEFDCDC1_DCDC1_EXT_ADJ_EN BIT(7)
#define TPS6507X_DEFDCDC1_DCDC1_MASK 0X3F
/* DEFDCDC2_LOW bitfields */
#define TPS6507X_DEFDCDC2_LOW_DCDC2_MASK 0X3F
/* DEFDCDC2_HIGH bitfields */
#define TPS6507X_DEFDCDC2_HIGH_DCDC2_MASK 0X3F
/* DEFDCDC3_LOW bitfields */
#define TPS6507X_DEFDCDC3_LOW_DCDC3_MASK 0X3F
/* DEFDCDC3_HIGH bitfields */
#define TPS6507X_DEFDCDC3_HIGH_DCDC3_MASK 0X3F
/* TPS6507X_REG_LDO_CTRL1 bitfields */
#define TPS6507X_REG_LDO_CTRL1_LDO1_MASK 0X0F
/* TPS6507X_REG_DEFLDO2 bitfields */
#define TPS6507X_REG_DEFLDO2_LDO2_MASK 0X3F
/* VDCDC MASK */
#define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F
/* DCDC's */
#define TPS6507X_DCDC_1 0
#define TPS6507X_DCDC_2 1
#define TPS6507X_DCDC_3 2
/* LDOs */
#define TPS6507X_LDO_1 3
#define TPS6507X_LDO_2 4
#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
/* Number of step-down converters available */
#define TPS6507X_NUM_DCDC 3
/* Number of LDO voltage regulators available */
#define TPS6507X_NUM_LDO 2
/* Number of total regulators available */
#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
/* Supported voltage values for regulators (in milliVolts) */
static const u16 VDCDCx_VSEL_table[] = {
725, 750, 775, 800,
825, 850, 875, 900,
925, 950, 975, 1000,
1025, 1050, 1075, 1100,
1125, 1150, 1175, 1200,
1225, 1250, 1275, 1300,
1325, 1350, 1375, 1400,
1425, 1450, 1475, 1500,
1550, 1600, 1650, 1700,
1750, 1800, 1850, 1900,
1950, 2000, 2050, 2100,
2150, 2200, 2250, 2300,
2350, 2400, 2450, 2500,
2550, 2600, 2650, 2700,
2750, 2800, 2850, 2900,
3000, 3100, 3200, 3300,
};
static const u16 LDO1_VSEL_table[] = {
1000, 1100, 1200, 1250,
1300, 1350, 1400, 1500,
1600, 1800, 2500, 2750,
2800, 3000, 3100, 3300,
};
static const u16 LDO2_VSEL_table[] = {
725, 750, 775, 800,
825, 850, 875, 900,
925, 950, 975, 1000,
1025, 1050, 1075, 1100,
1125, 1150, 1175, 1200,
1225, 1250, 1275, 1300,
1325, 1350, 1375, 1400,
1425, 1450, 1475, 1500,
1550, 1600, 1650, 1700,
1750, 1800, 1850, 1900,
1950, 2000, 2050, 2100,
2150, 2200, 2250, 2300,
2350, 2400, 2450, 2500,
2550, 2600, 2650, 2700,
2750, 2800, 2850, 2900,
3000, 3100, 3200, 3300,
};
static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
ARRAY_SIZE(VDCDCx_VSEL_table),
ARRAY_SIZE(VDCDCx_VSEL_table),
ARRAY_SIZE(LDO1_VSEL_table),
ARRAY_SIZE(LDO2_VSEL_table)};
struct tps_info {
const char *name;
unsigned min_uV;
unsigned max_uV;
u8 table_len;
const u16 *table;
};
struct tps_pmic {
struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
struct i2c_client *client;
struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
const struct tps_info *info[TPS6507X_NUM_REGULATOR];
struct mutex io_lock;
};
static inline int tps_6507x_read(struct tps_pmic *tps, u8 reg)
{
return i2c_smbus_read_byte_data(tps->client, reg);
}
static inline int tps_6507x_write(struct tps_pmic *tps, u8 reg, u8 val)
{
return i2c_smbus_write_byte_data(tps->client, reg, val);
}
static int tps_6507x_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
{
int err, data;
mutex_lock(&tps->io_lock);
data = tps_6507x_read(tps, reg);
if (data < 0) {
dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
err = data;
goto out;
}
data |= mask;
err = tps_6507x_write(tps, reg, data);
if (err)
dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
out:
mutex_unlock(&tps->io_lock);
return err;
}
static int tps_6507x_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
{
int err, data;
mutex_lock(&tps->io_lock);
data = tps_6507x_read(tps, reg);
if (data < 0) {
dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
err = data;
goto out;
}
data &= ~mask;
err = tps_6507x_write(tps, reg, data);
if (err)
dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
out:
mutex_unlock(&tps->io_lock);
return err;
}
static int tps_6507x_reg_read(struct tps_pmic *tps, u8 reg)
{
int data;
mutex_lock(&tps->io_lock);
data = tps_6507x_read(tps, reg);
if (data < 0)
dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
mutex_unlock(&tps->io_lock);
return data;
}
static int tps_6507x_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
{
int err;
mutex_lock(&tps->io_lock);
err = tps_6507x_write(tps, reg, val);
if (err < 0)
dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
mutex_unlock(&tps->io_lock);
return err;
}
static int tps6507x_dcdc_is_enabled(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, dcdc = rdev_get_id(dev);
u8 shift;
if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
return -EINVAL;
shift = TPS6507X_MAX_REG_ID - dcdc;
data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1);
if (data < 0)
return data;
else
return (data & 1<<shift) ? 1 : 0;
}
static int tps6507x_ldo_is_enabled(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, ldo = rdev_get_id(dev);
u8 shift;
if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
return -EINVAL;
shift = TPS6507X_MAX_REG_ID - ldo;
data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1);
if (data < 0)
return data;
else
return (data & 1<<shift) ? 1 : 0;
}
static int tps6507x_dcdc_enable(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
u8 shift;
if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
return -EINVAL;
shift = TPS6507X_MAX_REG_ID - dcdc;
return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}
static int tps6507x_dcdc_disable(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
u8 shift;
if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
return -EINVAL;
shift = TPS6507X_MAX_REG_ID - dcdc;
return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}
static int tps6507x_ldo_enable(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int ldo = rdev_get_id(dev);
u8 shift;
if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
return -EINVAL;
shift = TPS6507X_MAX_REG_ID - ldo;
return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}
static int tps6507x_ldo_disable(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int ldo = rdev_get_id(dev);
u8 shift;
if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
return -EINVAL;
shift = TPS6507X_MAX_REG_ID - ldo;
return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
}
static int tps6507x_dcdc_get_voltage(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, dcdc = rdev_get_id(dev);
u8 reg;
switch (dcdc) {
case TPS6507X_DCDC_1:
reg = TPS6507X_REG_DEFDCDC1;
break;
case TPS6507X_DCDC_2:
reg = TPS6507X_REG_DEFDCDC2_LOW;
break;
case TPS6507X_DCDC_3:
reg = TPS6507X_REG_DEFDCDC3_LOW;
break;
default:
return -EINVAL;
}
data = tps_6507x_reg_read(tps, reg);
if (data < 0)
return data;
data &= TPS6507X_DEFDCDCX_DCDC_MASK;
return tps->info[dcdc]->table[data] * 1000;
}
static int tps6507x_dcdc_set_voltage(struct regulator_dev *dev,
int min_uV, int max_uV)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, vsel, dcdc = rdev_get_id(dev);
u8 reg;
switch (dcdc) {
case TPS6507X_DCDC_1:
reg = TPS6507X_REG_DEFDCDC1;
break;
case TPS6507X_DCDC_2:
reg = TPS6507X_REG_DEFDCDC2_LOW;
break;
case TPS6507X_DCDC_3:
reg = TPS6507X_REG_DEFDCDC3_LOW;
break;
default:
return -EINVAL;
}
if (min_uV < tps->info[dcdc]->min_uV
|| min_uV > tps->info[dcdc]->max_uV)
return -EINVAL;
if (max_uV < tps->info[dcdc]->min_uV
|| max_uV > tps->info[dcdc]->max_uV)
return -EINVAL;
for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
int mV = tps->info[dcdc]->table[vsel];
int uV = mV * 1000;
/* Break at the first in-range value */
if (min_uV <= uV && uV <= max_uV)
break;
}
/* write to the register in case we found a match */
if (vsel == tps->info[dcdc]->table_len)
return -EINVAL;
data = tps_6507x_reg_read(tps, reg);
if (data < 0)
return data;
data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
data |= vsel;
return tps_6507x_reg_write(tps, reg, data);
}
static int tps6507x_ldo_get_voltage(struct regulator_dev *dev)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, ldo = rdev_get_id(dev);
u8 reg, mask;
if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
return -EINVAL;
else {
reg = (ldo == TPS6507X_LDO_1 ?
TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
mask = (ldo == TPS6507X_LDO_1 ?
TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
TPS6507X_REG_DEFLDO2_LDO2_MASK);
}
data = tps_6507x_reg_read(tps, reg);
if (data < 0)
return data;
data &= mask;
return tps->info[ldo]->table[data] * 1000;
}
static int tps6507x_ldo_set_voltage(struct regulator_dev *dev,
int min_uV, int max_uV)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, vsel, ldo = rdev_get_id(dev);
u8 reg, mask;
if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
return -EINVAL;
else {
reg = (ldo == TPS6507X_LDO_1 ?
TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
mask = (ldo == TPS6507X_LDO_1 ?
TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
TPS6507X_REG_DEFLDO2_LDO2_MASK);
}
if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
return -EINVAL;
if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
return -EINVAL;
for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
int mV = tps->info[ldo]->table[vsel];
int uV = mV * 1000;
/* Break at the first in-range value */
if (min_uV <= uV && uV <= max_uV)
break;
}
if (vsel == tps->info[ldo]->table_len)
return -EINVAL;
data = tps_6507x_reg_read(tps, reg);
if (data < 0)
return data;
data &= ~mask;
data |= vsel;
return tps_6507x_reg_write(tps, reg, data);
}
static int tps6507x_dcdc_list_voltage(struct regulator_dev *dev,
unsigned selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
return -EINVAL;
if (selector >= tps->info[dcdc]->table_len)
return -EINVAL;
else
return tps->info[dcdc]->table[selector] * 1000;
}
static int tps6507x_ldo_list_voltage(struct regulator_dev *dev,
unsigned selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int ldo = rdev_get_id(dev);
if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
return -EINVAL;
if (selector >= tps->info[ldo]->table_len)
return -EINVAL;
else
return tps->info[ldo]->table[selector] * 1000;
}
/* Operations permitted on VDCDCx */
static struct regulator_ops tps6507x_dcdc_ops = {
.is_enabled = tps6507x_dcdc_is_enabled,
.enable = tps6507x_dcdc_enable,
.disable = tps6507x_dcdc_disable,
.get_voltage = tps6507x_dcdc_get_voltage,
.set_voltage = tps6507x_dcdc_set_voltage,
.list_voltage = tps6507x_dcdc_list_voltage,
};
/* Operations permitted on LDOx */
static struct regulator_ops tps6507x_ldo_ops = {
.is_enabled = tps6507x_ldo_is_enabled,
.enable = tps6507x_ldo_enable,
.disable = tps6507x_ldo_disable,
.get_voltage = tps6507x_ldo_get_voltage,
.set_voltage = tps6507x_ldo_set_voltage,
.list_voltage = tps6507x_ldo_list_voltage,
};
static
int tps_6507x_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
static int desc_id;
const struct tps_info *info = (void *)id->driver_data;
struct regulator_init_data *init_data;
struct regulator_dev *rdev;
struct tps_pmic *tps;
int i;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
/**
* init_data points to array of regulator_init structures
* coming from the board-evm file.
*/
init_data = client->dev.platform_data;
if (!init_data)
return -EIO;
tps = kzalloc(sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
mutex_init(&tps->io_lock);
/* common for all regulators */
tps->client = client;
for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
/* Register the regulators */
tps->info[i] = info;
tps->desc[i].name = info->name;
tps->desc[i].id = desc_id++;
tps->desc[i].n_voltages = num_voltages[i];
tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
&tps6507x_ldo_ops : &tps6507x_dcdc_ops);
tps->desc[i].type = REGULATOR_VOLTAGE;
tps->desc[i].owner = THIS_MODULE;
rdev = regulator_register(&tps->desc[i],
&client->dev, init_data, tps);
if (IS_ERR(rdev)) {
dev_err(&client->dev, "failed to register %s\n",
id->name);
/* Unregister */
while (i)
regulator_unregister(tps->rdev[--i]);
tps->client = NULL;
/* clear the client data in i2c */
i2c_set_clientdata(client, NULL);
kfree(tps);
return PTR_ERR(rdev);
}
/* Save regulator for cleanup */
tps->rdev[i] = rdev;
}
i2c_set_clientdata(client, tps);
return 0;
}
/**
* tps_6507x_remove - TPS6507x driver i2c remove handler
* @client: i2c driver client device structure
*
* Unregister TPS driver as an i2c client device driver
*/
static int __devexit tps_6507x_remove(struct i2c_client *client)
{
struct tps_pmic *tps = i2c_get_clientdata(client);
int i;
for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
regulator_unregister(tps->rdev[i]);
tps->client = NULL;
/* clear the client data in i2c */
i2c_set_clientdata(client, NULL);
kfree(tps);
return 0;
}
static const struct tps_info tps6507x_regs[] = {
{
.name = "VDCDC1",
.min_uV = 725000,
.max_uV = 3300000,
.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
.table = VDCDCx_VSEL_table,
},
{
.name = "VDCDC2",
.min_uV = 725000,
.max_uV = 3300000,
.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
.table = VDCDCx_VSEL_table,
},
{
.name = "VDCDC3",
.min_uV = 725000,
.max_uV = 3300000,
.table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
.table = VDCDCx_VSEL_table,
},
{
.name = "LDO1",
.min_uV = 1000000,
.max_uV = 3300000,
.table_len = ARRAY_SIZE(LDO1_VSEL_table),
.table = LDO1_VSEL_table,
},
{
.name = "LDO2",
.min_uV = 725000,
.max_uV = 3300000,
.table_len = ARRAY_SIZE(LDO2_VSEL_table),
.table = LDO2_VSEL_table,
},
};
static const struct i2c_device_id tps_6507x_id[] = {
{.name = "tps6507x",
.driver_data = (unsigned long) tps6507x_regs,},
{ },
};
MODULE_DEVICE_TABLE(i2c, tps_6507x_id);
static struct i2c_driver tps_6507x_i2c_driver = {
.driver = {
.name = "tps6507x",
.owner = THIS_MODULE,
},
.probe = tps_6507x_probe,
.remove = __devexit_p(tps_6507x_remove),
.id_table = tps_6507x_id,
};
/**
* tps_6507x_init
*
* Module init function
*/
static int __init tps_6507x_init(void)
{
return i2c_add_driver(&tps_6507x_i2c_driver);
}
subsys_initcall(tps_6507x_init);
/**
* tps_6507x_cleanup
*
* Module exit function
*/
static void __exit tps_6507x_cleanup(void)
{
i2c_del_driver(&tps_6507x_i2c_driver);
}
module_exit(tps_6507x_cleanup);
MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
MODULE_LICENSE("GPL v2");
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