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regulator: tps51632: add DT support

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Add DT support for the TI TPS51632. Add device binding document also.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan
2012-12-25 20:36:00 +05:30
committed by Mark Brown
parent faa3b2d579
commit c51ce403d3
2 changed files with 86 additions and 0 deletions
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59
drivers/regulator/tps51632-regulator.c
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@@ -28,10 +28,13 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/tps51632-regulator.h>
#include <linux/slab.h>
@@ -252,6 +255,49 @@ static const struct regmap_config tps51632_regmap_config = {
.cache_type = REGCACHE_RBTREE,
};
#if defined(CONFIG_OF)
static const struct of_device_id tps51632_of_match[] = {
{ .compatible = "ti,tps51632",},
{},
};
MODULE_DEVICE_TABLE(of, tps51632_of_match);
static struct tps51632_regulator_platform_data *
of_get_tps51632_platform_data(struct device *dev)
{
struct tps51632_regulator_platform_data *pdata;
struct device_node *np = dev->of_node;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
dev_err(dev, "Memory alloc failed for platform data\n");
return NULL;
}
pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node);
if (!pdata->reg_init_data) {
dev_err(dev, "Not able to get OF regulator init data\n");
return NULL;
}
pdata->enable_pwm_dvfs =
of_property_read_bool(np, "ti,enable-pwm-dvfs");
pdata->dvfs_step_20mV = of_property_read_bool(np, "ti,dvfs-step-20mV");
pdata->base_voltage_uV = pdata->reg_init_data->constraints.min_uV ? :
TPS51632_MIN_VOLATGE;
pdata->max_voltage_uV = pdata->reg_init_data->constraints.max_uV ? :
TPS51632_MAX_VOLATGE;
return pdata;
}
#else
static struct tps51632_regulator_platform_data *
of_get_tps51632_platform_data(struct device *dev)
{
return NULL;
}
#endif
static int tps51632_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -261,7 +307,19 @@ static int tps51632_probe(struct i2c_client *client,
int ret;
struct regulator_config config = { };
if (client->dev.of_node) {
const struct of_device_id *match;
match = of_match_device(of_match_ptr(tps51632_of_match),
&client->dev);
if (!match) {
dev_err(&client->dev, "Error: No device match found\n");
return -ENODEV;
}
}
pdata = client->dev.platform_data;
if (!pdata && client->dev.of_node)
pdata = of_get_tps51632_platform_data(&client->dev);
if (!pdata) {
dev_err(&client->dev, "No Platform data\n");
return -EINVAL;
@@ -350,6 +408,7 @@ static struct i2c_driver tps51632_i2c_driver = {
.driver = {
.name = "tps51632",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(tps51632_of_match),
},
.probe = tps51632_probe,
.remove = tps51632_remove,