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Commit 9aa40426 authored by Sangwon Jee's avatar Sangwon Jee Committed by Dmitry Torokhov
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Input: melfas_mip4 - add hw_version sysfs attribute 



Add hw_version sysfs attribute for retrieving hardware information
from firmware.

Signed-off-by: default avatarSangwon Jee <jeesw@melfas.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 4d2508a5

drivers/input/touchscreen/melfas_mip4.c

+27 −1
Original line number Diff line number Diff line
@@ -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@melfas.com>");

MODULE_LICENSE("GPL");