Commit ad117c55 authored by Lucas Stach's avatar Lucas Stach Committed by Dmitry Torokhov
Browse files

Input: exc3000 - add type sysfs attribute 



Add a sysfs attribute to query the type of the touchscreen device.

Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20210125182527.1225245-5-l.stach@pengutronix.de


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent c929ac9e

Documentation/ABI/testing/sysfs-driver-input-exc3000

+9 −0
Original line number Diff line number Diff line
@@ -15,3 +15,12 @@ Description: Reports the model identification provided by the touchscreen, fo 
		Access: Read



		Valid values: Represented as string



What:		/sys/bus/i2c/devices/xxx/type

Date:		Jan 2021

Contact:	linux-input@vger.kernel.org

Description:	Reports the type identification provided by the touchscreen, for example "PCAP82H80 Series"



		Access: Read



		Valid values: Represented as string

drivers/input/touchscreen/exc3000.c

+17 −0
Original line number Diff line number Diff line
@@ -301,9 +301,26 @@ static ssize_t model_show(struct device *dev, 
}

static DEVICE_ATTR_RO(model);



static ssize_t type_show(struct device *dev,

			  struct device_attribute *attr, char *buf)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct exc3000_data *data = i2c_get_clientdata(client);

	u8 response[EXC3000_LEN_FRAME];

	int ret;



	ret = exc3000_vendor_data_request(data, (u8[]){'F'}, 1, response, 1);

	if (ret < 0)

		return ret;



	return sprintf(buf, "%s\n", &response[1]);

}

static DEVICE_ATTR_RO(type);



static struct attribute *sysfs_attrs[] = {

	&dev_attr_fw_version.attr,

	&dev_attr_model.attr,

	&dev_attr_type.attr,

	NULL

};