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regulator: tps65023: add device tree support 

Add device tree based initialization support for tps65023 regulators.
Therefore add macros for regulator definition setting of_match and
regulators_node members. Add initialization of regulator_desc data
using these macros. Remove old regulator_desc initialization.

Add device tree binding document for tps65023 regulators.

Signed-off-by: Thomas Elste <thomas.elste@imms.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Thomas Elste 2015-09-21 16:30:47 +02:00 committed by Mark Brown
parent 6ff33f3902
commit 2d3eda67dd
2 changed files with 169 additions and 175 deletions
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60
Documentation/devicetree/bindings/regulator/tps65023.txt Normal file
View File

@ -0,0 +1,60 @@
TPS65023 family of regulators
Required properties:
- compatible: Must be one of the following.
"ti,tps65020",
"ti,tps65021",
"ti,tps65023",
- reg: I2C slave address
- regulators: list of regulators provided by this controller, must be named
after their hardware counterparts: VDCDC[1-3] and LDO[1-2]
- regulators: This is the list of child nodes that specify the regulator
initialization data for defined regulators. The definition for each of
these nodes is defined using the standard binding for regulators found at
Documentation/devicetree/bindings/regulator/regulator.txt.
Each regulator is defined using the standard binding for regulators.
Example:
tps65023@48 {
compatible = "ti,tps65023";
reg = <0x48>;
regulators {
VDCDC1 {
regulator-name = "vdd_mpu";
regulator-always-on;
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
};
VDCDC2 {
regulator-name = "vdd_core";
regulator-always-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
VDCDC3 {
regulator-name = "vdd_io";
regulator-always-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
LDO1 {
regulator-name = "vdd_usb18";
regulator-always-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
LDO2 {
regulator-name = "vdd_usb33";
regulator-always-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
};

284
drivers/regulator/tps65023-regulator.c
View File

@ -86,6 +86,42 @@
#define TPS65023_MAX_REG_ID TPS65023_LDO_2
#define TPS65023_REGULATOR_DCDC(_num, _t, _em) \
{ \
.name = "VDCDC"#_num, \
.of_match = of_match_ptr("VDCDC"#_num), \
.regulators_node = of_match_ptr("regulators"), \
.id = TPS65023_DCDC_##_num, \
.n_voltages = ARRAY_SIZE(_t), \
.ops = &tps65023_dcdc_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.volt_table = _t, \
.vsel_reg = TPS65023_REG_DEF_CORE, \
.vsel_mask = ARRAY_SIZE(_t) - 1, \
.enable_mask = _em, \
.enable_reg = TPS65023_REG_REG_CTRL, \
.apply_reg = TPS65023_REG_CON_CTRL2, \
.apply_bit = TPS65023_REG_CTRL2_GO, \
} \
#define TPS65023_REGULATOR_LDO(_num, _t, _vm) \
{ \
.name = "LDO"#_num, \
.of_match = of_match_ptr("LDO"#_num), \
.regulators_node = of_match_ptr("regulators"), \
.id = TPS65023_LDO_##_num, \
.n_voltages = ARRAY_SIZE(_t), \
.ops = &tps65023_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.volt_table = _t, \
.vsel_reg = TPS65023_REG_LDO_CTRL, \
.vsel_mask = _vm, \
.enable_mask = 1 << (_num), \
.enable_reg = TPS65023_REG_REG_CTRL, \
} \
/* Supported voltage values for regulators */
static const unsigned int VCORE_VSEL_table[] = {
800000, 825000, 850000, 875000,
@ -124,25 +160,16 @@ static const unsigned int TPS65023_LDO2_VSEL_table[] = {
2500000, 2800000, 3000000, 3300000,
};
/* Regulator specific details */
struct tps_info {
const char *name;
u8 table_len;
const unsigned int *table;
};
/* PMIC details */
struct tps_pmic {
struct regulator_desc desc[TPS65023_NUM_REGULATOR];
struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
const struct tps_info *info[TPS65023_NUM_REGULATOR];
const struct tps_driver_data *driver_data;
struct regmap *regmap;
u8 core_regulator;
};
/* Struct passed as driver data */
struct tps_driver_data {
const struct tps_info *info;
const struct regulator_desc *desc;
u8 core_regulator;
};
@ -154,7 +181,7 @@ static int tps65023_dcdc_get_voltage_sel(struct regulator_dev *dev)
if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
return -EINVAL;
if (dcdc != tps->core_regulator)
if (dcdc != tps->driver_data->core_regulator)
return 0;
return regulator_get_voltage_sel_regmap(dev);
@ -166,7 +193,7 @@ static int tps65023_dcdc_set_voltage_sel(struct regulator_dev *dev,
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
if (dcdc != tps->core_regulator)
if (dcdc != tps->driver_data->core_regulator)
return -EINVAL;
return regulator_set_voltage_sel_regmap(dev, selector);
@ -199,30 +226,60 @@ static const struct regmap_config tps65023_regmap_config = {
.val_bits = 8,
};
static const struct regulator_desc tps65020_regulators[] = {
TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
TPS65023_REGULATOR_LDO(1, TPS65020_LDO_VSEL_table, 0x07),
TPS65023_REGULATOR_LDO(2, TPS65020_LDO_VSEL_table, 0x70),
};
static const struct regulator_desc tps65021_regulators[] = {
TPS65023_REGULATOR_DCDC(1, DCDC_FIXED_3300000_VSEL_table, 0x20),
TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_1800000_VSEL_table, 0x10),
TPS65023_REGULATOR_DCDC(3, VCORE_VSEL_table, 0x08),
TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
};
static const struct regulator_desc tps65023_regulators[] = {
TPS65023_REGULATOR_DCDC(1, VCORE_VSEL_table, 0x20),
TPS65023_REGULATOR_DCDC(2, DCDC_FIXED_3300000_VSEL_table, 0x10),
TPS65023_REGULATOR_DCDC(3, DCDC_FIXED_1800000_VSEL_table, 0x08),
TPS65023_REGULATOR_LDO(1, TPS65023_LDO1_VSEL_table, 0x07),
TPS65023_REGULATOR_LDO(2, TPS65023_LDO2_VSEL_table, 0x70),
};
static struct tps_driver_data tps65020_drv_data = {
.desc = tps65020_regulators,
.core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65021_drv_data = {
.desc = tps65021_regulators,
.core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65023_drv_data = {
.desc = tps65023_regulators,
.core_regulator = TPS65023_DCDC_1,
};
static int tps_65023_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
const struct tps_driver_data *drv_data = (void *)id->driver_data;
const struct tps_info *info = drv_data->info;
struct regulator_init_data *init_data = dev_get_platdata(&client->dev);
struct regulator_config config = { };
struct regulator_init_data *init_data;
struct regulator_dev *rdev;
struct tps_pmic *tps;
int i;
int error;
/**
* init_data points to array of regulator_init structures
* coming from the board-evm file.
*/
init_data = dev_get_platdata(&client->dev);
if (!init_data)
return -EIO;
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
tps->driver_data = (struct tps_driver_data *)id->driver_data;
tps->regmap = devm_regmap_init_i2c(client, &tps65023_regmap_config);
if (IS_ERR(tps->regmap)) {
error = PTR_ERR(tps->regmap);
@ -232,58 +289,22 @@ static int tps_65023_probe(struct i2c_client *client,
}
/* common for all regulators */
tps->core_regulator = drv_data->core_regulator;
for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
/* Store regulator specific information */
tps->info[i] = info;
tps->desc[i].name = info->name;
tps->desc[i].id = i;
tps->desc[i].n_voltages = info->table_len;
tps->desc[i].volt_table = info->table;
tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
&tps65023_ldo_ops : &tps65023_dcdc_ops);
tps->desc[i].type = REGULATOR_VOLTAGE;
tps->desc[i].owner = THIS_MODULE;
tps->desc[i].enable_reg = TPS65023_REG_REG_CTRL;
switch (i) {
case TPS65023_LDO_1:
tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
tps->desc[i].vsel_mask = 0x07;
tps->desc[i].enable_mask = 1 << 1;
break;
case TPS65023_LDO_2:
tps->desc[i].vsel_reg = TPS65023_REG_LDO_CTRL;
tps->desc[i].vsel_mask = 0x70;
tps->desc[i].enable_mask = 1 << 2;
break;
default: /* DCDCx */
tps->desc[i].enable_mask =
1 << (TPS65023_NUM_REGULATOR - i);
tps->desc[i].vsel_reg = TPS65023_REG_DEF_CORE;
tps->desc[i].vsel_mask = info->table_len - 1;
tps->desc[i].apply_reg = TPS65023_REG_CON_CTRL2;
tps->desc[i].apply_bit = TPS65023_REG_CTRL2_GO;
}
config.dev = &client->dev;
config.init_data = init_data;
config.driver_data = tps;
config.regmap = tps->regmap;
for (i = 0; i < TPS65023_NUM_REGULATOR; i++) {
if (init_data)
config.init_data = &init_data[i];
/* Register the regulators */
rdev = devm_regulator_register(&client->dev, &tps->desc[i],
&config);
if (IS_ERR(rdev)) {
tps->rdev[i] = devm_regulator_register(&client->dev,
&tps->driver_data->desc[i], &config);
if (IS_ERR(tps->rdev[i])) {
dev_err(&client->dev, "failed to register %s\n",
id->name);
return PTR_ERR(rdev);
return PTR_ERR(tps->rdev[i]);
}
/* Save regulator for cleanup */
tps->rdev[i] = rdev;
}
i2c_set_clientdata(client, tps);
@ -296,120 +317,33 @@ static int tps_65023_probe(struct i2c_client *client,
return 0;
}
static const struct tps_info tps65020_regs[] = {
{
.name = "VDCDC1",
.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
.table = DCDC_FIXED_3300000_VSEL_table,
},
{
.name = "VDCDC2",
.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
.table = DCDC_FIXED_1800000_VSEL_table,
},
{
.name = "VDCDC3",
.table_len = ARRAY_SIZE(VCORE_VSEL_table),
.table = VCORE_VSEL_table,
},
{
.name = "LDO1",
.table_len = ARRAY_SIZE(TPS65020_LDO_VSEL_table),
.table = TPS65020_LDO_VSEL_table,
},
{
.name = "LDO2",
.table_len = ARRAY_SIZE(TPS65020_LDO_VSEL_table),
.table = TPS65020_LDO_VSEL_table,
},
};
static const struct tps_info tps65021_regs[] = {
{
.name = "VDCDC1",
.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
.table = DCDC_FIXED_3300000_VSEL_table,
},
{
.name = "VDCDC2",
.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
.table = DCDC_FIXED_1800000_VSEL_table,
},
{
.name = "VDCDC3",
.table_len = ARRAY_SIZE(VCORE_VSEL_table),
.table = VCORE_VSEL_table,
},
{
.name = "LDO1",
.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
.table = TPS65023_LDO1_VSEL_table,
},
{
.name = "LDO2",
.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
.table = TPS65023_LDO2_VSEL_table,
},
};
static const struct tps_info tps65023_regs[] = {
{
.name = "VDCDC1",
.table_len = ARRAY_SIZE(VCORE_VSEL_table),
.table = VCORE_VSEL_table,
},
{
.name = "VDCDC2",
.table_len = ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table),
.table = DCDC_FIXED_3300000_VSEL_table,
},
{
.name = "VDCDC3",
.table_len = ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table),
.table = DCDC_FIXED_1800000_VSEL_table,
},
{
.name = "LDO1",
.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
.table = TPS65023_LDO1_VSEL_table,
},
{
.name = "LDO2",
.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
.table = TPS65023_LDO2_VSEL_table,
},
};
static struct tps_driver_data tps65020_drv_data = {
.info = tps65020_regs,
.core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65021_drv_data = {
.info = tps65021_regs,
.core_regulator = TPS65023_DCDC_3,
};
static struct tps_driver_data tps65023_drv_data = {
.info = tps65023_regs,
.core_regulator = TPS65023_DCDC_1,
};
static const struct i2c_device_id tps_65023_id[] = {
{.name = "tps65023",
.driver_data = (unsigned long) &tps65023_drv_data},
{.name = "tps65021",
.driver_data = (unsigned long) &tps65021_drv_data,},
{.name = "tps65020",
.driver_data = (unsigned long) &tps65020_drv_data},
static const struct of_device_id tps65023_of_match[] = {
{ .compatible = "ti,tps65020", .data = &tps65020_drv_data},
{ .compatible = "ti,tps65021", .data = &tps65021_drv_data},
{ .compatible = "ti,tps65023", .data = &tps65023_drv_data},
{},
};
MODULE_DEVICE_TABLE(of, tps65023_of_match);
static const struct i2c_device_id tps_65023_id[] = {
{
.name = "tps65023",
.driver_data = (kernel_ulong_t)&tps65023_drv_data
}, {
.name = "tps65021",
.driver_data = (kernel_ulong_t)&tps65021_drv_data
}, {
.name = "tps65020",
.driver_data = (kernel_ulong_t)&tps65020_drv_data
},
{ },
};
MODULE_DEVICE_TABLE(i2c, tps_65023_id);
static struct i2c_driver tps_65023_i2c_driver = {
.driver = {
.name = "tps65023",
.of_match_table = of_match_ptr(tps65023_of_match),
},
.probe = tps_65023_probe,
.id_table = tps_65023_id,