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regulator: tps65217: Add device tree support

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This commit adds device tree support for tps65217 pmic. And usage
details are added to device tree documentation. Driver is tested
by using kernel module with regulator set and get APIs.

Signed-off-by: AnilKumar Ch <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
AnilKumar Ch 2012-07-10 16:39:42 +05:30 • committed by Mark Brown
commit a7f1b63eb8
4 changed files with 159 additions and 3 deletions
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67
drivers/mfd/tps65217.c
View file

@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tps65217.h>
@ -132,6 +133,61 @@ int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
}
EXPORT_SYMBOL_GPL(tps65217_clear_bits);
#ifdef CONFIG_OF
static struct of_regulator_match reg_matches[] = {
{ .name = "dcdc1", .driver_data = (void *)TPS65217_DCDC_1 },
{ .name = "dcdc2", .driver_data = (void *)TPS65217_DCDC_2 },
{ .name = "dcdc3", .driver_data = (void *)TPS65217_DCDC_3 },
{ .name = "ldo1", .driver_data = (void *)TPS65217_LDO_1 },
{ .name = "ldo2", .driver_data = (void *)TPS65217_LDO_2 },
{ .name = "ldo3", .driver_data = (void *)TPS65217_LDO_3 },
{ .name = "ldo4", .driver_data = (void *)TPS65217_LDO_4 },
};
static struct tps65217_board *tps65217_parse_dt(struct i2c_client *client)
{
struct device_node *node = client->dev.of_node;
struct tps65217_board *pdata;
struct device_node *regs;
int count = ARRAY_SIZE(reg_matches);
int ret, i;
regs = of_find_node_by_name(node, "regulators");
if (!regs)
return NULL;
ret = of_regulator_match(&client->dev, regs, reg_matches, count);
of_node_put(regs);
if ((ret < 0) || (ret > count))
return NULL;
count = ret;
pdata = devm_kzalloc(&client->dev, count * sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return NULL;
for (i = 0; i < count; i++) {
if (!reg_matches[i].init_data || !reg_matches[i].of_node)
continue;
pdata->tps65217_init_data[i] = reg_matches[i].init_data;
pdata->of_node[i] = reg_matches[i].of_node;
}
return pdata;
}
static struct of_device_id tps65217_of_match[] = {
{ .compatible = "ti,tps65217", },
{ },
};
#else
static struct tps65217_board *tps65217_parse_dt(struct i2c_client *client)
{
return NULL;
}
#endif
static struct regmap_config tps65217_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@ -141,10 +197,14 @@ static int __devinit tps65217_probe(struct i2c_client *client,
const struct i2c_device_id *ids)
{
struct tps65217 *tps;
struct regulator_init_data *reg_data;
struct tps65217_board *pdata = client->dev.platform_data;
int i, ret;
unsigned int version;
if (!pdata && client->dev.of_node)
pdata = tps65217_parse_dt(client);
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
@ -182,8 +242,9 @@ static int __devinit tps65217_probe(struct i2c_client *client,
}
pdev->dev.parent = tps->dev;
platform_device_add_data(pdev, &pdata->tps65217_init_data[i],
sizeof(pdata->tps65217_init_data[i]));
pdev->dev.of_node = pdata->of_node[i];
reg_data = pdata->tps65217_init_data[i];
platform_device_add_data(pdev, reg_data, sizeof(*reg_data));
tps->regulator_pdev[i] = pdev;
platform_device_add(pdev);
@ -212,6 +273,8 @@ MODULE_DEVICE_TABLE(i2c, tps65217_id_table);
static struct i2c_driver tps65217_driver = {
.driver = {
.name = "tps65217",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(tps65217_of_match),
},
.id_table = tps65217_id_table,
.probe = tps65217_probe,