Merge branch 'master' of git://git.denx.de/u-boot-tegra

[u-boot] / drivers / i2c / i2c-uclass.c

diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c
index eaba965fa31a64c999e31339e07c0acfbaf0fc84..50b99ead3d9fb4179940d2c6566a698d954028f5 100644 (file)
--- a/drivers/i2c/i2c-uclass.c
+++ b/drivers/i2c/i2c-uclass.c
@@ -18,6 +18,22 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define I2C_MAX_OFFSET_LEN     4
 
+/* Useful debugging function */
+void i2c_dump_msgs(struct i2c_msg *msg, int nmsgs)
+{
+       int i;
+
+       for (i = 0; i < nmsgs; i++) {
+               struct i2c_msg *m = &msg[i];
+
+               printf("   %s %x len=%x", m->flags & I2C_M_RD ? "R" : "W",
+                      msg->addr, msg->len);
+               if (!(m->flags & I2C_M_RD))
+                       printf(": %x", m->buf[0]);
+               printf("\n");
+       }
+}
+
 /**
  * i2c_setup_offset() - Set up a new message with a chip offset
  *
@@ -186,6 +202,17 @@ int dm_i2c_write(struct udevice *dev, uint offset, const uint8_t *buffer,
        }
 }
 
+int dm_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, int nmsgs)
+{
+       struct udevice *bus = dev_get_parent(dev);
+       struct dm_i2c_ops *ops = i2c_get_ops(bus);
+
+       if (!ops->xfer)
+               return -ENOSYS;
+
+       return ops->xfer(bus, msg, nmsgs);
+}
+
 int dm_i2c_reg_read(struct udevice *dev, uint offset)
 {
        uint8_t val;