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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>
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@ -882,6 +882,26 @@ static void mxt_calc_resolution(struct mxt_data *data)
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}
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}
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/* Firmware Version is returned as Major.Minor.Build */
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static ssize_t mxt_fw_version_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct mxt_data *data = dev_get_drvdata(dev);
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struct mxt_info *info = &data->info;
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return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n",
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info->version >> 4, info->version & 0xf, info->build);
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}
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/* Hardware Version is returned as FamilyID.VariantID */
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static ssize_t mxt_hw_version_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct mxt_data *data = dev_get_drvdata(dev);
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struct mxt_info *info = &data->info;
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return scnprintf(buf, PAGE_SIZE, "%u.%u\n",
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info->family_id, info->variant_id);
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}
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static ssize_t mxt_show_instance(char *buf, int count,
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struct mxt_object *object, int instance,
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const u8 *val)
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@ -1047,10 +1067,14 @@ static ssize_t mxt_update_fw_store(struct device *dev,
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return count;
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}
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static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL);
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static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL);
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static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL);
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static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store);
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static struct attribute *mxt_attrs[] = {
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&dev_attr_fw_version.attr,
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&dev_attr_hw_version.attr,
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&dev_attr_object.attr,
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&dev_attr_update_fw.attr,
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NULL
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