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path: root/drivers/w1/w1.c
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Diffstat (limited to 'drivers/w1/w1.c')
-rw-r--r--drivers/w1/w1.c69
1 files changed, 68 insertions, 1 deletions
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index a698b517e86..c9486c16850 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -139,7 +139,74 @@ static struct bin_attribute w1_slave_attr_bin_id = {
};
/* Default family */
-static struct w1_family w1_default_family;
+
+static ssize_t w1_default_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+ struct w1_slave *sl = kobj_to_w1_slave(kobj);
+
+ if (down_interruptible(&sl->master->mutex)) {
+ count = 0;
+ goto out;
+ }
+
+ if (w1_reset_select_slave(sl)) {
+ count = 0;
+ goto out_up;
+ }
+
+ w1_write_block(sl->master, buf, count);
+
+out_up:
+ up(&sl->master->mutex);
+out:
+ return count;
+}
+
+static ssize_t w1_default_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+ struct w1_slave *sl = kobj_to_w1_slave(kobj);
+
+ if (down_interruptible(&sl->master->mutex)) {
+ count = 0;
+ goto out;
+ }
+
+ w1_read_block(sl->master, buf, count);
+
+ up(&sl->master->mutex);
+out:
+ return count;
+}
+
+static struct bin_attribute w1_default_attr = {
+ .attr = {
+ .name = "rw",
+ .mode = S_IRUGO | S_IWUSR,
+ .owner = THIS_MODULE,
+ },
+ .size = PAGE_SIZE,
+ .read = w1_default_read,
+ .write = w1_default_write,
+};
+
+static int w1_default_add_slave(struct w1_slave *sl)
+{
+ return sysfs_create_bin_file(&sl->dev.kobj, &w1_default_attr);
+}
+
+static void w1_default_remove_slave(struct w1_slave *sl)
+{
+ sysfs_remove_bin_file(&sl->dev.kobj, &w1_default_attr);
+}
+
+static struct w1_family_ops w1_default_fops = {
+ .add_slave = w1_default_add_slave,
+ .remove_slave = w1_default_remove_slave,
+};
+
+static struct w1_family w1_default_family = {
+ .fops = &w1_default_fops,
+};
static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size);