diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2021-03-07 21:40:37 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-03-07 21:56:50 -0800 |
| commit | ad117c558e838f9fa93af265d8f9dd54e87e15b1 (patch) | |
| tree | 0ed6d7f87659eb3d86dbca6f32ba4b3b2527a934 | |
| parent | c929ac9eb85acf9217eb812369bbd4cf65a772e0 (diff) | |
Input: exc3000 - add type sysfs attribute
Add a sysfs attribute to query the type of the touchscreen device.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20210125182527.1225245-5-l.stach@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-input-exc3000 | 9 | ||||
| -rw-r--r-- | drivers/input/touchscreen/exc3000.c | 17 |
2 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-input-exc3000 b/Documentation/ABI/testing/sysfs-driver-input-exc3000 index cd7c578aef2c..704434b277b0 100644 --- a/Documentation/ABI/testing/sysfs-driver-input-exc3000 +++ b/Documentation/ABI/testing/sysfs-driver-input-exc3000 @@ -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 diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscreen/exc3000.c index 66682a0c37d7..cbe0dd412912 100644 --- a/drivers/input/touchscreen/exc3000.c +++ b/drivers/input/touchscreen/exc3000.c @@ -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 }; |