Add hw_version sysfs attribute for retrieving hardware information
from firmware.
Signed-off-by: Sangwon Jee <jeesw@xxxxxxxxxx>
---
drivers/input/touchscreen/melfas_mip4.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/melfas_mip4.c b/drivers/input/touchscreen/melfas_mip4.c
index 89272973..fb5fb91 100644
--- a/drivers/input/touchscreen/melfas_mip4.c
+++ b/drivers/input/touchscreen/melfas_mip4.c
@@ -1310,8 +1310,34 @@ static ssize_t mip4_sysfs_read_fw_version(struct device *dev,
static DEVICE_ATTR(fw_version, S_IRUGO, mip4_sysfs_read_fw_version, NULL);
+static ssize_t mip4_sysfs_read_hw_version(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct mip4_ts *ts = i2c_get_clientdata(client);
+ size_t count;
+
+ /* Take lock to prevent racing with firmware update */
+ mutex_lock(&ts->input->mutex);
+
+ /*
+ * product_name shows the name or version of the hardware
+ * paired with current firmware in the chip.
+ */
+ count = snprintf(buf, PAGE_SIZE, "%.*s\n",
+ (int)sizeof(ts->product_name), ts->product_name);
+
+ mutex_unlock(&ts->input->mutex);
+
+ return count;
+}
+
+static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL);
+
static struct attribute *mip4_attrs[] = {
&dev_attr_fw_version.attr,
+ &dev_attr_hw_version.attr,
&dev_attr_update_fw.attr,
NULL,
};
@@ -1512,6 +1538,6 @@ static struct i2c_driver mip4_driver = {
module_i2c_driver(mip4_driver);
MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen");
-MODULE_VERSION("2016.03.03");
+MODULE_VERSION("2016.03.12");
MODULE_AUTHOR("Sangwon Jee <jeesw@xxxxxxxxxx>");
MODULE_LICENSE("GPL");
--
1.9.1
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