This can be used by userspace to determine if a firmware update should be
started.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
drivers/input/touchscreen/exc3000.c | 54 +++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscreen/exc3000.c
index accee4fd1b97..ce83914d65ff 100644
--- a/drivers/input/touchscreen/exc3000.c
+++ b/drivers/input/touchscreen/exc3000.c
@@ -259,6 +259,47 @@ static int exc3000_populate_device_info(struct exc3000_data *data)
return 0;
}
+static ssize_t exc3000_sysfs_type_show(struct device *dev,
+ struct device_attribute *dattr,
+ char *buf)
+{
+ struct exc3000_data *data = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", data->type);
+}
+static DEVICE_ATTR(type, 0444, exc3000_sysfs_type_show, NULL);
+
+static ssize_t exc3000_sysfs_model_show(struct device *dev,
+ struct device_attribute *dattr,
+ char *buf)
+{
+ struct exc3000_data *data = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", data->model);
+}
+static DEVICE_ATTR(model, 0444, exc3000_sysfs_model_show, NULL);
+
+static ssize_t exc3000_sysfs_fw_rev_show(struct device *dev,
+ struct device_attribute *dattr,
+ char *buf)
+{
+ struct exc3000_data *data = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", data->fw_rev);
+}
+static DEVICE_ATTR(fw_rev, 0444, exc3000_sysfs_fw_rev_show, NULL);
+
+static struct attribute *exc3000_attrs[] = {
+ &dev_attr_type.attr,
+ &dev_attr_model.attr,
+ &dev_attr_fw_rev.attr,
+ NULL
+};
+
+static const struct attribute_group exc3000_attr_group = {
+ .attrs = exc3000_attrs,
+};
+
static int exc3000_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -285,6 +326,11 @@ static int exc3000_probe(struct i2c_client *client,
if (error)
return error;
+ dev_set_drvdata(&client->dev, data);
+ error = sysfs_create_group(&client->dev.kobj, &exc3000_attr_group);
+ if (error)
+ return error;
+
input = devm_input_allocate_device(&client->dev);
if (!input)
return -ENOMEM;
@@ -310,6 +356,13 @@ static int exc3000_probe(struct i2c_client *client,
return 0;
}
+int exc3000_remove(struct i2c_client *client)
+{
+ sysfs_remove_group(&client->dev.kobj, &exc3000_attr_group);
+
+ return 0;
+}
+
static const struct i2c_device_id exc3000_id[] = {
{ "exc3000", 0 },
{ }
@@ -331,6 +384,7 @@ static struct i2c_driver exc3000_driver = {
},
.id_table = exc3000_id,
.probe = exc3000_probe,
+ .remove = exc3000_remove,
};
module_i2c_driver(exc3000_driver);
--
2.20.1
