Input: mms114 - add device tree bindings
Add device tree bindings for mms114 touchscreen.
[Dmitry Torokhov: added #ifdef CONFIG_OF guards]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c
index 560cf09..3426d2e1 100644
--- a/drivers/input/touchscreen/mms114.c
+++ b/drivers/input/touchscreen/mms114.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/of.h>
#include <linux/i2c.h>
#include <linux/i2c/mms114.h>
#include <linux/input/mt.h>
@@ -360,14 +361,63 @@
mms114_stop(data);
}
+#ifdef CONFIG_OF
+static struct mms114_platform_data * __devinit mms114_parse_dt(struct device *dev)
+{
+ struct mms114_platform_data *pdata;
+ struct device_node *np = dev->of_node;
+
+ if (!np)
+ return NULL;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(dev, "failed to allocate platform data\n");
+ return NULL;
+ }
+
+ if (of_property_read_u32(np, "x-size", &pdata->x_size)) {
+ dev_err(dev, "failed to get x-size property\n");
+ return NULL;
+ };
+
+ if (of_property_read_u32(np, "y-size", &pdata->y_size)) {
+ dev_err(dev, "failed to get y-size property\n");
+ return NULL;
+ };
+
+ of_property_read_u32(np, "contact-threshold",
+ &pdata->contact_threshold);
+ of_property_read_u32(np, "moving-threshold",
+ &pdata->moving_threshold);
+
+ if (of_find_property(np, "x-invert", NULL))
+ pdata->x_invert = true;
+ if (of_find_property(np, "y-invert", NULL))
+ pdata->y_invert = true;
+
+ return pdata;
+}
+#else
+static inline struct mms114_platform_data *mms114_parse_dt(struct device *dev)
+{
+ return NULL;
+}
+#endif
+
static int __devinit mms114_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ const struct mms114_platform_data *pdata;
struct mms114_data *data;
struct input_dev *input_dev;
int error;
- if (!client->dev.platform_data) {
+ pdata = dev_get_platdata(&client->dev);
+ if (!pdata)
+ pdata = mms114_parse_dt(&client->dev);
+
+ if (!pdata) {
dev_err(&client->dev, "Need platform data\n");
return -EINVAL;
}
@@ -389,7 +439,7 @@
data->client = client;
data->input_dev = input_dev;
- data->pdata = client->dev.platform_data;
+ data->pdata = pdata;
input_dev->name = "MELPAS MMS114 Touchscreen";
input_dev->id.bustype = BUS_I2C;
@@ -525,11 +575,19 @@
};
MODULE_DEVICE_TABLE(i2c, mms114_id);
+#ifdef CONFIG_OF
+static struct of_device_id __devinitdata mms114_dt_match[] = {
+ { .compatible = "melfas,mms114" },
+ { }
+};
+#endif
+
static struct i2c_driver mms114_driver = {
.driver = {
.name = "mms114",
.owner = THIS_MODULE,
.pm = &mms114_pm_ops,
+ .of_match_table = of_match_ptr(mms114_dt_match),
},
.probe = mms114_probe,
.remove = __devexit_p(mms114_remove),