cros_ec: spi: Add support for EC protocol version 3

[karo-tx-uboot.git] / include / cros_ec.h

diff --git a/include/cros_ec.h b/include/cros_ec.h
index 1199d923354c30e8a3926a80e52b6d50d6778784..84f9104d36dd33eb18f60191ec5828ee8e774e24 100644 (file)
--- a/include/cros_ec.h
+++ b/include/cros_ec.h
@@ -311,6 +311,19 @@ int cros_ec_spi_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
                     const uint8_t *dout, int dout_len,
                     uint8_t **dinp, int din_len);
 
+/**
+ * Send a packet to a CROS-EC device and return the response packet.
+ *
+ * Expects the request packet to be stored in dev->dout.  Stores the response
+ * packet in dev->din.
+ *
+ * @param dev          CROS-EC device
+ * @param out_bytes    Size of request packet to output
+ * @param in_bytes     Maximum size of response packet to receive
+ * @return number of bytes in response packet, or <0 on error
+ */
+int cros_ec_spi_packet(struct cros_ec_dev *dev, int out_bytes, int in_bytes);
+
 /**
  * Dump a block of data for a command.
  *