regulator: da9211: support device tree

This is a patch for supporting device tree of DA9211/DA9213.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
James Ban 2014-08-27 11:47:07 +09:00 committed by Mark Brown
parent 1d3e6a6985
commit bf3baca6c5
3 changed files with 142 additions and 8 deletions

View file

@ -0,0 +1,63 @@
* Dialog Semiconductor DA9211/DA9213 Voltage Regulator
Required properties:
- compatible: "dlg,da9211" or "dlg,da9213".
- reg: I2C slave address, usually 0x68.
- interrupts: the interrupt outputs of the controller
- regulators: A node that houses a sub-node for each regulator within the
device. Each sub-node is identified using the node's name, with valid
values listed below. The content of each sub-node is defined by the
standard binding for regulators; see regulator.txt.
BUCKA and BUCKB.
Optional properties:
- Any optional property defined in regulator.txt
Example 1) DA9211
pmic: da9211@68 {
compatible = "dlg,da9211";
reg = <0x68>;
interrupts = <3 27>;
regulators {
BUCKA {
regulator-name = "VBUCKA";
regulator-min-microvolt = < 300000>;
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <2000000>;
regulator-max-microamp = <5000000>;
};
BUCKB {
regulator-name = "VBUCKB";
regulator-min-microvolt = < 300000>;
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <2000000>;
regulator-max-microamp = <5000000>;
};
};
};
Example 2) DA92113
pmic: da9213@68 {
compatible = "dlg,da9213";
reg = <0x68>;
interrupts = <3 27>;
regulators {
BUCKA {
regulator-name = "VBUCKA";
regulator-min-microvolt = < 300000>;
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <3000000>;
regulator-max-microamp = <6000000>;
};
BUCKB {
regulator-name = "VBUCKB";
regulator-min-microvolt = < 300000>;
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <3000000>;
regulator-max-microamp = <6000000>;
};
};
};

View file

@ -24,6 +24,7 @@
#include <linux/regmap.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/da9211.h>
#include "da9211-regulator.h"
@ -236,6 +237,59 @@ static struct regulator_desc da9211_regulators[] = {
DA9211_BUCK(BUCKB),
};
#ifdef CONFIG_OF
static struct of_regulator_match da9211_matches[] = {
[DA9211_ID_BUCKA] = { .name = "BUCKA" },
[DA9211_ID_BUCKB] = { .name = "BUCKB" },
};
static struct da9211_pdata *da9211_parse_regulators_dt(
struct device *dev)
{
struct da9211_pdata *pdata;
struct device_node *node;
int i, num, n;
node = of_get_child_by_name(dev->of_node, "regulators");
if (!node) {
dev_err(dev, "regulators node not found\n");
return ERR_PTR(-ENODEV);
}
num = of_regulator_match(dev, node, da9211_matches,
ARRAY_SIZE(da9211_matches));
of_node_put(node);
if (num < 0) {
dev_err(dev, "Failed to match regulators\n");
return ERR_PTR(-EINVAL);
}
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM);
pdata->num_buck = num;
n = 0;
for (i = 0; i < ARRAY_SIZE(da9211_matches); i++) {
if (!da9211_matches[i].init_data)
continue;
pdata->init_data[n] = da9211_matches[i].init_data;
n++;
};
return pdata;
}
#else
static struct da9211_pdata *da9211_parse_regulators_dt(
struct device *dev)
{
return ERR_PTR(-ENODEV);
}
#endif
static irqreturn_t da9211_irq_handler(int irq, void *data)
{
struct da9211 *chip = data;
@ -306,7 +360,7 @@ static int da9211_regulator_init(struct da9211 *chip)
}
for (i = 0; i < chip->num_regulator; i++) {
config.init_data = &(chip->pdata->init_data[i]);
config.init_data = chip->pdata->init_data[i];
config.dev = chip->dev;
config.driver_data = chip;
config.regmap = chip->regmap;
@ -332,6 +386,21 @@ static int da9211_regulator_init(struct da9211 *chip)
return 0;
}
static const struct i2c_device_id da9211_i2c_id[] = {
{"da9211", DA9211},
{"da9213", DA9213},
{},
};
#ifdef CONFIG_OF
static const struct of_device_id da9211_dt_ids[] = {
{ .compatible = "dlg,da9211", .data = &da9211_i2c_id[0] },
{ .compatible = "dlg,da9213", .data = &da9211_i2c_id[1] },
{},
};
#endif
/*
* I2C driver interface functions
*/
@ -377,6 +446,14 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
return -ENODEV;
}
if (!chip->pdata)
chip->pdata = da9211_parse_regulators_dt(chip->dev);
if (IS_ERR(chip->pdata)) {
dev_err(chip->dev, "No regulators defined for the platform\n");
return PTR_ERR(chip->pdata);
}
chip->chip_irq = i2c->irq;
if (chip->chip_irq != 0) {
@ -401,12 +478,6 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
return ret;
}
static const struct i2c_device_id da9211_i2c_id[] = {
{"da9211", DA9211},
{"da9213", DA9213},
{},
};
MODULE_DEVICE_TABLE(i2c, da9211_i2c_id);
static struct i2c_driver da9211_regulator_driver = {

View file

@ -32,6 +32,6 @@ struct da9211_pdata {
* 2 : 2 phase 2 buck
*/
int num_buck;
struct regulator_init_data *init_data;
struct regulator_init_data *init_data[DA9211_MAX_REGULATORS];
};
#endif