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path: root/drivers/mfd/max8925-i2c.c
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Diffstat (limited to 'drivers/mfd/max8925-i2c.c')
-rw-r--r--drivers/mfd/max8925-i2c.c36
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
index 00b5b456063d..92bbebd31598 100644
--- a/drivers/mfd/max8925-i2c.c
+++ b/drivers/mfd/max8925-i2c.c
@@ -135,13 +135,37 @@ static const struct i2c_device_id max8925_id_table[] = {
};
MODULE_DEVICE_TABLE(i2c, max8925_id_table);
+static int max8925_dt_init(struct device_node *np, struct device *dev,
+ struct max8925_platform_data *pdata)
+{
+ int ret;
+
+ ret = of_property_read_u32(np, "maxim,tsc-irq", &pdata->tsc_irq);
+ if (ret) {
+ dev_err(dev, "Not found maxim,tsc-irq property\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
static int max8925_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct max8925_platform_data *pdata = client->dev.platform_data;
static struct max8925_chip *chip;
-
- if (!pdata) {
+ struct device_node *node = client->dev.of_node;
+
+ if (node && !pdata) {
+ /* parse DT to get platform data */
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct max8925_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ if (max8925_dt_init(node, &client->dev, pdata))
+ return -EINVAL;
+ } else if (!pdata) {
pr_info("%s: platform data is missing\n", __func__);
return -EINVAL;
}
@@ -203,11 +227,18 @@ static int max8925_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(max8925_pm_ops, max8925_suspend, max8925_resume);
+static const struct of_device_id max8925_dt_ids[] = {
+ { .compatible = "maxim,max8925", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, max8925_dt_ids);
+
static struct i2c_driver max8925_driver = {
.driver = {
.name = "max8925",
.owner = THIS_MODULE,
.pm = &max8925_pm_ops,
+ .of_match_table = of_match_ptr(max8925_dt_ids),
},
.probe = max8925_probe,
.remove = max8925_remove,
@@ -217,7 +248,6 @@ static struct i2c_driver max8925_driver = {
static int __init max8925_i2c_init(void)
{
int ret;
-
ret = i2c_add_driver(&max8925_driver);
if (ret != 0)
pr_err("Failed to register MAX8925 I2C driver: %d\n", ret);