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| author | Sangwon Jee <jeesw@melfas.com> | 2016-03-16 22:33:05 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-03-17 02:25:41 +0300 |
| commit | 9aa40426a4a23dfd9ca4c1c0f777b8c57e5070fd (patch) | |
| tree | 50f82b38ef0aa3fcce293e5804195afdddb8074a /drivers/input/touchscreen/melfas_mip4.c | |
| parent | 4d2508a55990c9b0fc1afb2c2cc5636712fd30f7 (diff) | |
| download | linux-9aa40426a4a23dfd9ca4c1c0f777b8c57e5070fd.tar.xz | |
Input: melfas_mip4 - add hw_version sysfs attribute
Add hw_version sysfs attribute for retrieving hardware information
from firmware.
Signed-off-by: Sangwon Jee <jeesw@melfas.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/melfas_mip4.c')
| -rw-r--r-- | drivers/input/touchscreen/melfas_mip4.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/input/touchscreen/melfas_mip4.c b/drivers/input/touchscreen/melfas_mip4.c index 892729734c51..fb5fb9140ca9 100644 --- a/drivers/input/touchscreen/melfas_mip4.c +++ b/drivers/input/touchscreen/melfas_mip4.c @@ -1310,8 +1310,34 @@ static ssize_t mip4_sysfs_read_fw_version(struct device *dev, static DEVICE_ATTR(fw_version, S_IRUGO, mip4_sysfs_read_fw_version, NULL); +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); + + /* + * product_name shows the name or version of the hardware + * paired with current firmware in the chip. + */ + count = snprintf(buf, PAGE_SIZE, "%.*s\n", + (int)sizeof(ts->product_name), ts->product_name); + + mutex_unlock(&ts->input->mutex); + + return count; +} + +static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL); + static struct attribute *mip4_attrs[] = { &dev_attr_fw_version.attr, + &dev_attr_hw_version.attr, &dev_attr_update_fw.attr, NULL, }; @@ -1512,6 +1538,6 @@ static struct i2c_driver mip4_driver = { module_i2c_driver(mip4_driver); MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen"); -MODULE_VERSION("2016.03.03"); +MODULE_VERSION("2016.03.12"); MODULE_AUTHOR("Sangwon Jee <jeesw@melfas.com>"); MODULE_LICENSE("GPL"); |