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| author |   Daniel Kurtz <djkurtz@chromium.org> | 2012-06-28 21:08:16 +0800 |
|---|---|---|
| committer |   Henrik Rydberg <rydberg@euromail.se> | 2012-06-29 15:58:05 +0200 |
| commit | b19fc9ec241382c2155bf56f08f02066f2fb4826 (patch) | |
| tree | e252da3859cf7612b94e7c7161c277523c0d3608 /drivers/input/touchscreen/atmel_mxt_ts.c | |
| parent | Input: atmel_mxt_ts - update driver ID info logging (diff) | |
| download | linux-dev-b19fc9ec241382c2155bf56f08f02066f2fb4826.tar.xz linux-dev-b19fc9ec241382c2155bf56f08f02066f2fb4826.zip | |
Input: atmel_mxt_ts - add sysfs entries to read fw and hw version
Make firmware and hardware version strings available to userspace.
This is useful, for example, to allow a userspace program to implement
a firwmare update policy.
Change-Id: I1eddb4bbf5f3f9ae6947a8528598973ddead18cf
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to '')
| -rw-r--r-- | drivers/input/touchscreen/atmel_mxt_ts.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 7a839d106336..f2c1fbe2556e 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -882,6 +882,26 @@ static void mxt_calc_resolution(struct mxt_data *data) } } +/* Firmware Version is returned as Major.Minor.Build */ +static ssize_t mxt_fw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mxt_data *data = dev_get_drvdata(dev); + struct mxt_info *info = &data->info; + return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", + info->version >> 4, info->version & 0xf, info->build); +} + +/* Hardware Version is returned as FamilyID.VariantID */ +static ssize_t mxt_hw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mxt_data *data = dev_get_drvdata(dev); + struct mxt_info *info = &data->info; + return scnprintf(buf, PAGE_SIZE, "%u.%u\n", + info->family_id, info->variant_id); +} + static ssize_t mxt_show_instance(char *buf, int count, struct mxt_object *object, int instance, const u8 *val) @@ -1047,10 +1067,14 @@ static ssize_t mxt_update_fw_store(struct device *dev, return count; } +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 struct attribute *mxt_attrs[] = { + &dev_attr_fw_version.attr, + &dev_attr_hw_version.attr, &dev_attr_object.attr, &dev_attr_update_fw.attr, NULL |