Hi,
On Mon, Feb 15, 2016 at 10:40:45PM +0900, Sangwon Jee wrote:
> This is an input driver for MELFAS MIP4 Touchscreen devices,
> made by the original vendor, MELFAS.
>
> MIP4 means MELFAS Interface Protocol Version 4.
> MELFAS MMS400, MMS500, MCS8000, MIT200, MIT300, MIT400, MFS10 and other
> recent touchscreen devices are using MIP4 and supported by this driver.
>
> There are two MELFAS touchscreen drivers(mcs5000_ts, mms114) in the kernel.
> But those drivers are for discontinued models and not supported by MELFAS.
>
> Signed-off-by: Sangwon Jee <jeesw@xxxxxxxxxx>
As you may have noticed I ended up applying the previous version of the
driver. Any additional changes should be made against the version in my
'next' branch or linux-next.
> +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);
> +
> + count = snprintf(buf, PAGE_SIZE, "%s\n", "MIT400");
> +
> + mutex_unlock(&ts->input->mutex);
> +
> + return count;
> +}
It is unclear why we need basically a constant attribute.
Thanks.
--
Dmitry
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