Regulator: Add TPS6507x regulator driver
Adding support for TI TPS6507x regulator driver Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Anuj Aggarwal
Liam Girdwood
parent
30e6599d31
commit
3fa5b8e082
1 changed files with 713 additions and 0 deletions
713
drivers/regulator/tps6507x-regulator.c
Normal file
713
drivers/regulator/tps6507x-regulator.c
Normal file
|
|
@ -0,0 +1,713 @@
|
|||
/*
|
||||
* 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[0],
|
||||
};
|
||||
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("GPLv2");
|
||||
Loading…
Reference in a new issue