Messages in this thread Patch in this message | | | From | Shawn Guo <> | Subject | [PATCH] Input: atmel_mxt_ts - add config_crc sysfs entry | Date | Tue, 29 Jun 2021 10:30:23 +0800 |
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It's useful for checking the config version that is currently installed on the device.
The code is taken from downstream maXTouch_linux tree.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org> --- drivers/input/touchscreen/atmel_mxt_ts.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 05de92c0293b..41a3d4df3ebd 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -3002,16 +3002,27 @@ static ssize_t mxt_update_fw_store(struct device *dev, return count; } +/* Configuration crc check sum is returned as hex xxxxxx */ +static ssize_t mxt_config_crc_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mxt_data *data = dev_get_drvdata(dev); + + return scnprintf(buf, PAGE_SIZE, "%06x\n", data->config_crc); +} + static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); +static DEVICE_ATTR(config_crc, S_IRUGO, mxt_config_crc_show, NULL); static struct attribute *mxt_attrs[] = { &dev_attr_fw_version.attr, &dev_attr_hw_version.attr, &dev_attr_object.attr, &dev_attr_update_fw.attr, + &dev_attr_config_crc.attr, NULL }; -- 2.17.1
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