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Commit 4e1bff07 authored by Sangwon Jee's avatar Sangwon Jee Committed by Dmitry Torokhov
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Input: melfas_mip4 - add ic_name sysfs attribute 



Add ic_name sysfs attribute for retrieving IC model name.

Signed-off-by: default avatarSangwon Jee <jeesw@melfas.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent ff43f433

drivers/input/touchscreen/melfas_mip4.c

+36 −2
Original line number Diff line number Diff line
@@ -157,6 +157,7 @@ struct mip4_ts { 


	char phys[32];

	char product_name[16];

	char ic_name[4];



	unsigned int max_x;

	unsigned int max_y;
@@ -263,6 +264,18 @@ static int mip4_query_device(struct mip4_ts *ts) 
		dev_dbg(&ts->client->dev, "product name: %.*s\n",

			(int)sizeof(ts->product_name), ts->product_name);



	/* IC name */

	cmd[0] = MIP4_R0_INFO;

	cmd[1] = MIP4_R1_INFO_IC_NAME;

	error = mip4_i2c_xfer(ts, cmd, sizeof(cmd),

			      ts->ic_name, sizeof(ts->ic_name));

	if (error)

		dev_warn(&ts->client->dev,

			 "Failed to retrieve IC name: %d\n", error);

	else

		dev_dbg(&ts->client->dev, "IC name: %.*s\n",

			(int)sizeof(ts->ic_name), ts->ic_name);



	/* Firmware version */

	error = mip4_get_fw_version(ts);

	if (error)
@@ -1335,9 +1348,30 @@ static ssize_t mip4_sysfs_read_hw_version(struct device *dev, 


static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL);



static ssize_t mip4_sysfs_read_ic_name(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;



	mutex_lock(&ts->input->mutex);



	count = snprintf(buf, PAGE_SIZE, "%.*s\n",

			 (int)sizeof(ts->ic_name), ts->ic_name);



	mutex_unlock(&ts->input->mutex);



	return count;

}



static DEVICE_ATTR(ic_name, S_IRUGO, mip4_sysfs_read_ic_name, NULL);



static struct attribute *mip4_attrs[] = {

	&dev_attr_fw_version.attr,

	&dev_attr_hw_version.attr,

	&dev_attr_ic_name.attr,

	&dev_attr_update_fw.attr,

	NULL,

};
@@ -1538,6 +1572,6 @@ static struct i2c_driver mip4_driver = { 
module_i2c_driver(mip4_driver);



MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen");

MODULE_VERSION("2016.03.12");

MODULE_VERSION("2016.09.28");

MODULE_AUTHOR("Sangwon Jee <jeesw@melfas.com>");

MODULE_LICENSE("GPL");