From: Sangwon Jee Date: Fri, 30 Sep 2016 22:38:47 +0000 (-0700) Subject: Input: melfas_mip4 - add ic_name sysfs attribute X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4e1bff07d7e7bc9fc3fc62100dcb8f708e1e96d2;p=linux-beck.git Input: melfas_mip4 - add ic_name sysfs attribute Add ic_name sysfs attribute for retrieving IC model name. Signed-off-by: Sangwon Jee Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/touchscreen/melfas_mip4.c b/drivers/input/touchscreen/melfas_mip4.c index fb5fb9140ca9..552a3773f79d 100644 --- a/drivers/input/touchscreen/melfas_mip4.c +++ b/drivers/input/touchscreen/melfas_mip4.c @@ -157,6 +157,7 @@ struct mip4_ts { char phys[32]; char product_name[16]; + char ic_name[4]; unsigned int max_x; unsigned int max_y; @@ -263,6 +264,18 @@ static int mip4_query_device(struct mip4_ts *ts) dev_dbg(&ts->client->dev, "product name: %.*s\n", (int)sizeof(ts->product_name), ts->product_name); + /* IC name */ + cmd[0] = MIP4_R0_INFO; + cmd[1] = MIP4_R1_INFO_IC_NAME; + error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), + ts->ic_name, sizeof(ts->ic_name)); + if (error) + dev_warn(&ts->client->dev, + "Failed to retrieve IC name: %d\n", error); + else + dev_dbg(&ts->client->dev, "IC name: %.*s\n", + (int)sizeof(ts->ic_name), ts->ic_name); + /* Firmware version */ error = mip4_get_fw_version(ts); if (error) @@ -1326,7 +1339,7 @@ static ssize_t mip4_sysfs_read_hw_version(struct device *dev, * paired with current firmware in the chip. */ count = snprintf(buf, PAGE_SIZE, "%.*s\n", - (int)sizeof(ts->product_name), ts->product_name); + (int)sizeof(ts->product_name), ts->product_name); mutex_unlock(&ts->input->mutex); @@ -1335,9 +1348,30 @@ static ssize_t mip4_sysfs_read_hw_version(struct device *dev, static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL); +static ssize_t mip4_sysfs_read_ic_name(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; + + mutex_lock(&ts->input->mutex); + + count = snprintf(buf, PAGE_SIZE, "%.*s\n", + (int)sizeof(ts->ic_name), ts->ic_name); + + mutex_unlock(&ts->input->mutex); + + return count; +} + +static DEVICE_ATTR(ic_name, S_IRUGO, mip4_sysfs_read_ic_name, NULL); + static struct attribute *mip4_attrs[] = { &dev_attr_fw_version.attr, &dev_attr_hw_version.attr, + &dev_attr_ic_name.attr, &dev_attr_update_fw.attr, NULL, }; @@ -1538,6 +1572,6 @@ static struct i2c_driver mip4_driver = { module_i2c_driver(mip4_driver); MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen"); -MODULE_VERSION("2016.03.12"); +MODULE_VERSION("2016.09.28"); MODULE_AUTHOR("Sangwon Jee "); MODULE_LICENSE("GPL");