X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=drivers%2Fw1%2Fw1_io.c;h=442bd8bbd4a5dcbed086cae48fed1350ba9e31b6;hb=cdb80f630be5cbc23d82331f24dc4704f75b64f4;hp=5139c25ca96288474cf976cf5577be12c6d6d30b;hpb=08cc36cbd1ee7d86422713bb21551eed1326b894;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c
index 5139c25ca96..442bd8bbd4a 100644
--- a/drivers/w1/w1_io.c
+++ b/drivers/w1/w1_io.c
@@ -238,7 +238,6 @@ EXPORT_SYMBOL_GPL(w1_read_8);
  * @param dev     the master device
  * @param buf     pointer to the data to write
  * @param len     the number of bytes to write
- * @return        the byte read
  */
 void w1_write_block(struct w1_master *dev, const u8 *buf, int len)
 {
@@ -255,6 +254,31 @@ void w1_write_block(struct w1_master *dev, const u8 *buf, int len)
 }
 EXPORT_SYMBOL_GPL(w1_write_block);
 
+/**
+ * Touches a series of bytes.
+ *
+ * @param dev     the master device
+ * @param buf     pointer to the data to write
+ * @param len     the number of bytes to write
+ */
+void w1_touch_block(struct w1_master *dev, u8 *buf, int len)
+{
+	int i, j;
+	u8 tmp;
+
+	for (i = 0; i < len; ++i) {
+		tmp = 0;
+		for (j = 0; j < 8; ++j) {
+			if (j == 7)
+				w1_pre_write(dev);
+			tmp |= w1_touch_bit(dev, (buf[i] >> j) & 0x1) << j;
+		}
+
+		buf[i] = tmp;
+	}
+}
+EXPORT_SYMBOL_GPL(w1_touch_block);
+
 /**
  * Reads a series of bytes.
  *