return w1_read_bit(dev);
else {
w1_write_bit(dev, 0);
- return(0);
+ return 0;
}
}
*/
u8 w1_triplet(struct w1_master *dev, int bdir)
{
- if ( dev->bus_master->triplet )
- return(dev->bus_master->triplet(dev->bus_master->data, bdir));
+ if (dev->bus_master->triplet)
+ return dev->bus_master->triplet(dev->bus_master->data, bdir);
else {
u8 id_bit = w1_touch_bit(dev, 1);
u8 comp_bit = w1_touch_bit(dev, 1);
u8 retval;
- if ( id_bit && comp_bit )
- return(0x03); /* error */
+ if (id_bit && comp_bit)
+ return 0x03; /* error */
- if ( !id_bit && !comp_bit ) {
+ if (!id_bit && !comp_bit) {
/* Both bits are valid, take the direction given */
retval = bdir ? 0x04 : 0;
} else {
retval = id_bit ? 0x05 : 0x02;
}
- if ( dev->bus_master->touch_bit )
+ if (dev->bus_master->touch_bit)
w1_touch_bit(dev, bdir);
else
w1_write_bit(dev, bdir);
- return(retval);
+ return retval;
}
}
* @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)
{
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.
*
* @param dev the master device