[U-Boot] [RFC PATCH 09/14] dfu: add callback for flush and initiated operation

[Patrick Delaunay]

Add weak callback to allow board specific behavior
- flush
- initiated

This patch prepare usage of DFU back end for communication with
STM32CubeProgrammer on stm32mp1 platform with stm32prog command.

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 drivers/dfu/dfu.c | 19 +++++++++++++++++++
 include/dfu.h     |  2 ++
 2 files changed, 21 insertions(+)

diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index a960b6e..e642b09 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -22,6 +22,22 @@ static int alt_num_cnt;
 static struct hash_algo *dfu_hash_algo;
 
 /*
+ * The purpose of the dfu_flush_callback() function is to
+ * provide callback for dfu user
+ */
+__weak void dfu_flush_callback(struct dfu_entity *dfu)
+{
+}
+
+/*
+ * The purpose of the dfu_flush_callback() function is to
+ * provide callback for dfu user
+ */
+__weak void dfu_initiated_callback(struct dfu_entity *dfu)
+{
+}
+
+/*
  * The purpose of the dfu_usb_get_reset() function is to
  * provide information if after USB_DETACH request
  * being sent the dfu-util performed reset of USB
@@ -262,6 +278,7 @@ int dfu_transaction_initiate(struct dfu_entity *dfu, bool read)
 	}
 
 	dfu->inited = 1;
+	dfu_initiated_callback(dfu);
 
 	return 0;
 }
@@ -281,6 +298,8 @@ int dfu_flush(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
 		printf("\nDFU complete %s: 0x%08x\n", dfu_hash_algo->name,
 		       dfu->crc);
 
+	dfu_flush_callback(dfu);
+
 	dfu_transaction_cleanup(dfu);
 
 	return ret;
diff --git a/include/dfu.h b/include/dfu.h
index 4de7d35..5d85cc3 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -182,6 +182,8 @@ bool dfu_usb_get_reset(void);
 int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
 int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
 int dfu_flush(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
+void dfu_flush_callback(struct dfu_entity *dfu);
+void dfu_initiated_callback(struct dfu_entity *dfu);
 
 /*
  * dfu_defer_flush - pointer to store dfu_entity for deferred flashing.
-- 
2.7.4