read/write chromeos vbc with sysfs

[cascardo/linux.git] / drivers / platform / chromeos_ec-fw.c

diff --git a/drivers/platform/chromeos_ec-fw.c b/drivers/platform/chromeos_ec-fw.c
index 7b34c98..d2c0da2 100644 (file)
--- a/drivers/platform/chromeos_ec-fw.c
+++ b/drivers/platform/chromeos_ec-fw.c
@@ -80,23 +80,39 @@ static ssize_t ec_dev_usb_store(struct device *dev,
                                 struct device_attribute *attr,
                                 const char *buf, size_t count)
 {
-        int err;
-        err = chromeos_set_dev_usb();
-        if (err)
-                return err;
-        return count;
+       int err;
+       err = chromeos_set_dev_usb();
+       if (err)
+               return err;
+       return count;
+}
+
+static ssize_t ec_vbnv_store(struct device *dev,
+                            struct device_attribute *attr,
+                            const char *buf, size_t count)
+{
+       return chromeos_vbc_write(buf, count);
+}
+
+static ssize_t ec_vbnv_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+       return chromeos_vbc_read(buf, 16);
 }
 
 static DEVICE_ATTR(fw_version, S_IRUGO, ec_fw_version_show, NULL);
 static DEVICE_ATTR(build_info, S_IRUGO, ec_build_info_show, NULL);
 static DEVICE_ATTR(chip_info, S_IRUGO, ec_chip_info_show, NULL);
 static DEVICE_ATTR(dev_usb, S_IWUGO, NULL, ec_dev_usb_store);
+static DEVICE_ATTR(vbnv, S_IRUGO | S_IWUGO, ec_vbnv_show, ec_vbnv_store);
 
 static struct attribute *ec_fw_attrs[] = {
        &dev_attr_fw_version.attr,
        &dev_attr_build_info.attr,
        &dev_attr_chip_info.attr,
        &dev_attr_dev_usb.attr,
+       &dev_attr_vbnv.attr,
        NULL
 };