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authorDaniel Kurtz <djkurtz@chromium.org>2012-06-28 21:08:16 +0800
committerHenrik Rydberg <rydberg@euromail.se>2012-06-29 15:58:05 +0200
commitb19fc9ec241382c2155bf56f08f02066f2fb4826 (patch)
treee252da3859cf7612b94e7c7161c277523c0d3608 /drivers/input
parente0e0269f347ce89251ecf02ec4a209136bda258e (diff)
downloadop-kernel-dev-b19fc9ec241382c2155bf56f08f02066f2fb4826.zip
op-kernel-dev-b19fc9ec241382c2155bf56f08f02066f2fb4826.tar.gz
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 'drivers/input')
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c24
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 7a839d1..f2c1fbe 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
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