[PATCH 15/21 v5] Input: atmel_mxt_ts - add sysfs entries to read fw and hw version
From: Daniel Kurtz <hidden>
Date: 2012-06-26 06:59:52
Also in:
lkml
Subsystem:
atmel maxtouch driver, input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Nick Dyer, Dmitry Torokhov, Linus Torvalds
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. Signed-off-by: Daniel Kurtz <redacted> --- 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 be7da72..0baff14 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c@@ -881,6 +881,26 @@ 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_object_show(struct device *dev, struct device_attribute *attr, char *buf) {
@@ -1042,10 +1062,14 @@ 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
--
1.7.7.3