Commit 31dd6a26 authored by Todd Fischer's avatar Todd Fischer Committed by Samuel Ortiz

mfd: Add TPS6507x support

TPS6507x are multi function (PM, touchscreen) chipsets from TI.
This commit also changes the corresponding regulator driver from being
standalone to an MFD subdevice.
Signed-off-by: default avatarTodd Fischer <todd.fischer@ridgerun.com>
Acked-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 4ce5ba5b
...@@ -116,6 +116,18 @@ config TPS65010 ...@@ -116,6 +116,18 @@ config TPS65010
This driver can also be built as a module. If so, the module This driver can also be built as a module. If so, the module
will be called tps65010. will be called tps65010.
config TPS6507X
tristate "TPS6507x Power Management / Touch Screen chips"
select MFD_CORE
depends on I2C
help
If you say yes here you get support for the TPS6507x series of
Power Management / Touch Screen chips. These include voltage
regulators, lithium ion/polymer battery charging, touch screen
and other features that are often used in portable devices.
This driver can also be built as a module. If so, the module
will be called tps6507x.
config MENELAUS config MENELAUS
bool "Texas Instruments TWL92330/Menelaus PM chip" bool "Texas Instruments TWL92330/Menelaus PM chip"
depends on I2C=y && ARCH_OMAP2 depends on I2C=y && ARCH_OMAP2
......
...@@ -29,6 +29,7 @@ obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o ...@@ -29,6 +29,7 @@ obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
obj-$(CONFIG_MFD_WM8994) += wm8994-core.o wm8994-irq.o obj-$(CONFIG_MFD_WM8994) += wm8994-core.o wm8994-irq.o
obj-$(CONFIG_TPS65010) += tps65010.o obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_TPS6507X) += tps6507x.o
obj-$(CONFIG_MENELAUS) += menelaus.o obj-$(CONFIG_MENELAUS) += menelaus.o
obj-$(CONFIG_TWL4030_CORE) += twl-core.o twl4030-irq.o twl6030-irq.o obj-$(CONFIG_TWL4030_CORE) += twl-core.o twl4030-irq.o twl6030-irq.o
......
/*
* tps6507x.c -- TPS6507x chip family multi-function driver
*
* Copyright (c) 2010 RidgeRun (todd.fischer@ridgerun.com)
*
* Author: Todd Fischer
* todd.fischer@ridgerun.com
*
* Credits:
*
* Using code from wm831x-*.c, wm8400-core, Wolfson Microelectronics PLC.
*
* For licencing details see kernel-base/COPYING
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tps6507x.h>
static struct mfd_cell tps6507x_devs[] = {
{
.name = "tps6507x-pmic",
},
};
static int tps6507x_i2c_read_device(struct tps6507x_dev *tps6507x, char reg,
int bytes, void *dest)
{
struct i2c_client *i2c = tps6507x->i2c_client;
struct i2c_msg xfer[2];
int ret;
/* Write register */
xfer[0].addr = i2c->addr;
xfer[0].flags = 0;
xfer[0].len = 1;
xfer[0].buf = &reg;
/* Read data */
xfer[1].addr = i2c->addr;
xfer[1].flags = I2C_M_RD;
xfer[1].len = bytes;
xfer[1].buf = dest;
ret = i2c_transfer(i2c->adapter, xfer, 2);
if (ret == 2)
ret = 0;
else if (ret >= 0)
ret = -EIO;
return ret;
}
static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg,
int bytes, void *src)
{
struct i2c_client *i2c = tps6507x->i2c_client;
/* we add 1 byte for device register */
u8 msg[TPS6507X_MAX_REGISTER + 1];
int ret;
if (bytes > (TPS6507X_MAX_REGISTER + 1))
return -EINVAL;
msg[0] = reg;
memcpy(&msg[1], src, bytes);
ret = i2c_master_send(i2c, msg, bytes + 1);
if (ret < 0)
return ret;
if (ret != bytes + 1)
return -EIO;
return 0;
}
static int tps6507x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tps6507x_dev *tps6507x;
int ret = 0;
tps6507x = kzalloc(sizeof(struct tps6507x_dev), GFP_KERNEL);
if (tps6507x == NULL) {
kfree(i2c);
return -ENOMEM;
}
i2c_set_clientdata(i2c, tps6507x);
tps6507x->dev = &i2c->dev;
tps6507x->i2c_client = i2c;
tps6507x->read_dev = tps6507x_i2c_read_device;
tps6507x->write_dev = tps6507x_i2c_write_device;
ret = mfd_add_devices(tps6507x->dev, -1,
tps6507x_devs, ARRAY_SIZE(tps6507x_devs),
NULL, 0);
if (ret < 0)
goto err;
return ret;
err:
mfd_remove_devices(tps6507x->dev);
kfree(tps6507x);
return ret;
}
static int tps6507x_i2c_remove(struct i2c_client *i2c)
{
struct tps6507x_dev *tps6507x = i2c_get_clientdata(i2c);
mfd_remove_devices(tps6507x->dev);
kfree(tps6507x);
return 0;
}
static const struct i2c_device_id tps6507x_i2c_id[] = {
{ "tps6507x", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tps6507x_i2c_id);
static struct i2c_driver tps6507x_i2c_driver = {
.driver = {
.name = "tps6507x",
.owner = THIS_MODULE,
},
.probe = tps6507x_i2c_probe,
.remove = tps6507x_i2c_remove,
.id_table = tps6507x_i2c_id,
};
static int __init tps6507x_i2c_init(void)
{
return i2c_add_driver(&tps6507x_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(tps6507x_i2c_init);
static void __exit tps6507x_i2c_exit(void)
{
i2c_del_driver(&tps6507x_i2c_driver);
}
module_exit(tps6507x_i2c_exit);
MODULE_DESCRIPTION("TPS6507x chip family multi-function driver");
MODULE_LICENSE("GPL");
...@@ -22,7 +22,6 @@ ...@@ -22,7 +22,6 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/regulator/driver.h> #include <linux/regulator/driver.h>
#include <linux/regulator/machine.h> #include <linux/regulator/machine.h>
#include <linux/i2c.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/mfd/tps6507x.h> #include <linux/mfd/tps6507x.h>
...@@ -104,22 +103,67 @@ struct tps_info { ...@@ -104,22 +103,67 @@ struct tps_info {
const u16 *table; const u16 *table;
}; };
static const struct tps_info tps6507x_pmic_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,
},
};
struct tps6507x_pmic { struct tps6507x_pmic {
struct regulator_desc desc[TPS6507X_NUM_REGULATOR]; struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
struct i2c_client *client; struct tps6507x_dev *mfd;
struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR]; struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
const struct tps_info *info[TPS6507X_NUM_REGULATOR]; const struct tps_info *info[TPS6507X_NUM_REGULATOR];
struct mutex io_lock; struct mutex io_lock;
}; };
static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg) static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
{ {
return i2c_smbus_read_byte_data(tps->client, reg); u8 val;
int err;
err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
if (err)
return err;
return val;
} }
static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val) static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
{ {
return i2c_smbus_write_byte_data(tps->client, reg, val); return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
} }
static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
...@@ -130,7 +174,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) ...@@ -130,7 +174,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
data = tps6507x_pmic_read(tps, reg); data = tps6507x_pmic_read(tps, reg);
if (data < 0) { if (data < 0) {
dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
err = data; err = data;
goto out; goto out;
} }
...@@ -138,7 +182,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) ...@@ -138,7 +182,7 @@ static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
data |= mask; data |= mask;
err = tps6507x_pmic_write(tps, reg, data); err = tps6507x_pmic_write(tps, reg, data);
if (err) if (err)
dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
out: out:
mutex_unlock(&tps->io_lock); mutex_unlock(&tps->io_lock);
...@@ -153,7 +197,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) ...@@ -153,7 +197,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
data = tps6507x_pmic_read(tps, reg); data = tps6507x_pmic_read(tps, reg);
if (data < 0) { if (data < 0) {
dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
err = data; err = data;
goto out; goto out;
} }
...@@ -161,7 +205,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask) ...@@ -161,7 +205,7 @@ static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
data &= ~mask; data &= ~mask;
err = tps6507x_pmic_write(tps, reg, data); err = tps6507x_pmic_write(tps, reg, data);
if (err) if (err)
dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
out: out:
mutex_unlock(&tps->io_lock); mutex_unlock(&tps->io_lock);
...@@ -176,7 +220,7 @@ static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg) ...@@ -176,7 +220,7 @@ static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
data = tps6507x_pmic_read(tps, reg); data = tps6507x_pmic_read(tps, reg);
if (data < 0) if (data < 0)
dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
mutex_unlock(&tps->io_lock); mutex_unlock(&tps->io_lock);
return data; return data;
...@@ -190,7 +234,7 @@ static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val) ...@@ -190,7 +234,7 @@ static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
err = tps6507x_pmic_write(tps, reg, val); err = tps6507x_pmic_write(tps, reg, val);
if (err < 0) if (err < 0)
dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
mutex_unlock(&tps->io_lock); mutex_unlock(&tps->io_lock);
return err; return err;
...@@ -483,11 +527,12 @@ static struct regulator_ops tps6507x_pmic_ldo_ops = { ...@@ -483,11 +527,12 @@ static struct regulator_ops tps6507x_pmic_ldo_ops = {
.list_voltage = tps6507x_pmic_ldo_list_voltage, .list_voltage = tps6507x_pmic_ldo_list_voltage,
}; };
static int __devinit tps6507x_pmic_probe(struct i2c_client *client, static __devinit
const struct i2c_device_id *id) int tps6507x_pmic_probe(struct platform_device *pdev)
{ {
struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
static int desc_id; static int desc_id;
const struct tps_info *info = (void *)id->driver_data; const struct tps_info *info = &tps6507x_pmic_regs[0];
struct regulator_init_data *init_data; struct regulator_init_data *init_data;
struct regulator_dev *rdev; struct regulator_dev *rdev;
struct tps6507x_pmic *tps; struct tps6507x_pmic *tps;
...@@ -495,16 +540,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, ...@@ -495,16 +540,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
int i; int i;
int error; int error;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
/** /**
* tps_board points to pmic related constants * tps_board points to pmic related constants
* coming from the board-evm file. * coming from the board-evm file.
*/ */
tps_board = dev_get_platdata(&client->dev); tps_board = dev_get_platdata(tps6507x_dev->dev);
if (!tps_board) if (!tps_board)
return -EINVAL; return -EINVAL;
...@@ -523,7 +564,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, ...@@ -523,7 +564,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
mutex_init(&tps->io_lock); mutex_init(&tps->io_lock);
/* common for all regulators */ /* common for all regulators */
tps->client = client; tps->mfd = tps6507x_dev;
for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) { for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
/* Register the regulators */ /* Register the regulators */
...@@ -537,10 +578,11 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, ...@@ -537,10 +578,11 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
tps->desc[i].owner = THIS_MODULE; tps->desc[i].owner = THIS_MODULE;
rdev = regulator_register(&tps->desc[i], rdev = regulator_register(&tps->desc[i],
&client->dev, init_data, tps); tps6507x_dev->dev, init_data, tps);
if (IS_ERR(rdev)) { if (IS_ERR(rdev)) {
dev_err(&client->dev, "failed to register %s\n", dev_err(tps6507x_dev->dev,
id->name); "failed to register %s regulator\n",
pdev->name);
error = PTR_ERR(rdev); error = PTR_ERR(rdev);
goto fail; goto fail;
} }
...@@ -549,7 +591,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, ...@@ -549,7 +591,7 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
tps->rdev[i] = rdev; tps->rdev[i] = rdev;
} }
i2c_set_clientdata(client, tps); tps6507x_dev->pmic = tps;
return 0; return 0;
...@@ -567,14 +609,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client, ...@@ -567,14 +609,12 @@ static int __devinit tps6507x_pmic_probe(struct i2c_client *client,
* *
* Unregister TPS driver as an i2c client device driver * Unregister TPS driver as an i2c client device driver
*/ */
static int __devexit tps6507x_pmic_remove(struct i2c_client *client) static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
{ {
struct tps6507x_pmic *tps = i2c_get_clientdata(client); struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
struct tps6507x_pmic *tps = tps6507x_dev->pmic;
int i; int i;
/* clear the client data in i2c */
i2c_set_clientdata(client, NULL);
for (i = 0; i < TPS6507X_NUM_REGULATOR; i++) for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
regulator_unregister(tps->rdev[i]); regulator_unregister(tps->rdev[i]);
...@@ -583,59 +623,13 @@ static int __devexit tps6507x_pmic_remove(struct i2c_client *client) ...@@ -583,59 +623,13 @@ static int __devexit tps6507x_pmic_remove(struct i2c_client *client)
return 0; return 0;
} }
static const struct tps_info tps6507x_pmic_regs[] = { static struct platform_driver tps6507x_pmic_driver = {
{
.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 tps6507x_pmic_id[] = {
{.name = "tps6507x",
.driver_data = (unsigned long) tps6507x_pmic_regs,},
{ },
};
MODULE_DEVICE_TABLE(i2c, tps6507x_pmic_id);
static struct i2c_driver tps6507x_i2c_driver = {
.driver = { .driver = {
.name = "tps6507x", .name = "tps6507x-pmic",
.owner = THIS_MODULE, .owner = THIS_MODULE,
}, },
.probe = tps6507x_pmic_probe, .probe = tps6507x_pmic_probe,
.remove = __devexit_p(tps6507x_pmic_remove), .remove = __devexit_p(tps6507x_pmic_remove),
.id_table = tps6507x_pmic_id,
}; };
/** /**
...@@ -645,7 +639,7 @@ static struct i2c_driver tps6507x_i2c_driver = { ...@@ -645,7 +639,7 @@ static struct i2c_driver tps6507x_i2c_driver = {
*/ */
static int __init tps6507x_pmic_init(void) static int __init tps6507x_pmic_init(void)
{ {
return i2c_add_driver(&tps6507x_i2c_driver); return platform_driver_register(&tps6507x_pmic_driver);
} }
subsys_initcall(tps6507x_pmic_init); subsys_initcall(tps6507x_pmic_init);
...@@ -656,10 +650,11 @@ subsys_initcall(tps6507x_pmic_init); ...@@ -656,10 +650,11 @@ subsys_initcall(tps6507x_pmic_init);
*/ */
static void __exit tps6507x_pmic_cleanup(void) static void __exit tps6507x_pmic_cleanup(void)
{ {
i2c_del_driver(&tps6507x_i2c_driver); platform_driver_unregister(&tps6507x_pmic_driver);
} }
module_exit(tps6507x_pmic_cleanup); module_exit(tps6507x_pmic_cleanup);
MODULE_AUTHOR("Texas Instruments"); MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TPS6507x voltage regulator driver"); MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
MODULE_LICENSE("GPL v2"); MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:tps6507x-pmic");
...@@ -131,6 +131,8 @@ ...@@ -131,6 +131,8 @@
/* VDCDC MASK */ /* VDCDC MASK */
#define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F #define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F
#define TPS6507X_MAX_REGISTER 0X19
/** /**
* struct tps6507x_board - packages regulator and touchscreen init data * struct tps6507x_board - packages regulator and touchscreen init data
* @tps6507x_regulator_data: regulator initialization values * @tps6507x_regulator_data: regulator initialization values
...@@ -142,4 +144,24 @@ struct tps6507x_board { ...@@ -142,4 +144,24 @@ struct tps6507x_board {
struct regulator_init_data *tps6507x_pmic_init_data; struct regulator_init_data *tps6507x_pmic_init_data;
}; };
/**
* struct tps6507x_dev - tps6507x sub-driver chip access routines
* @read_dev() - I2C register read function
* @write_dev() - I2C register write function
*
* Device data may be used to access the TPS6507x chip
*/
struct tps6507x_dev {
struct device *dev;
struct i2c_client *i2c_client;
int (*read_dev)(struct tps6507x_dev *tps6507x, char reg, int size,
void *dest);
int (*write_dev)(struct tps6507x_dev *tps6507x, char reg, int size,
void *src);
/* Client devices */
struct tps6507x_pmic *pmic;
};
#endif /* __LINUX_MFD_TPS6507X_H */ #endif /* __LINUX_MFD_TPS6507X_H */
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