dfu: rename dfu_tftp_write() to dfu_write_by_name()

This function is essentially independent from tftp, and will also be
utilised in implementing UEFI capsule update in a later commit.
So just give it a more generic name.
In addition, a new configuration option, CONFIG_DFU_WRITE_ALT, was
introduced so that the file will be compiled with different options,
particularly one added in a later commit.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

5 files changed, 41 insertions, 22 deletions

diff --git a/common/update.c b/common/update.c
index 36b6b7523d..39946776d7 100644
--- a/common/update.c
+++ b/common/update.c
@@ -324,8 +324,9 @@ got_update_file:
 			}
 		} else if (fit_image_check_type(fit, noffset,
 						IH_TYPE_FIRMWARE)) {
-			ret = dfu_tftp_write(fit_image_name, update_addr,
-					     update_size, interface, devstring);
+			ret = dfu_write_by_name(fit_image_name, update_addr,
+						update_size, interface,
+						devstring);
 			if (ret)
 				return ret;
 		}
diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
index 0eec00ba73..10196f390f 100644
--- a/drivers/dfu/Kconfig
+++ b/drivers/dfu/Kconfig
@@ -14,8 +14,13 @@ config DFU_OVER_TFTP
 	depends on NET
 
 if DFU
+config DFU_WRITE_ALT
+	bool
+	default n
+
 config DFU_TFTP
 	bool "DFU via TFTP"
+	select DFU_WRITE_ALT
 	select DFU_OVER_TFTP
 	help
 	  This option allows performing update of DFU-managed medium with data
diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile
index 0d7925c083..dfbf64da66 100644
--- a/drivers/dfu/Makefile
+++ b/drivers/dfu/Makefile
@@ -9,5 +9,5 @@ obj-$(CONFIG_$(SPL_)DFU_MTD) += dfu_mtd.o
 obj-$(CONFIG_$(SPL_)DFU_NAND) += dfu_nand.o
 obj-$(CONFIG_$(SPL_)DFU_RAM) += dfu_ram.o
 obj-$(CONFIG_$(SPL_)DFU_SF) += dfu_sf.o
-obj-$(CONFIG_$(SPL_)DFU_TFTP) += dfu_tftp.o
+obj-$(CONFIG_$(SPL_)DFU_WRITE_ALT) += dfu_alt.o
 obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o
diff --git a/drivers/dfu/dfu_tftp.c b/drivers/dfu/dfu_alt.c
index ffae4bb54f..8870967f4a 100644
--- a/drivers/dfu/dfu_tftp.c
+++ b/drivers/dfu/dfu_alt.c
@@ -10,8 +10,21 @@
 #include <errno.h>
 #include <dfu.h>
 
-int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len,
-		   char *interface, char *devstring)
+/**
+ * dfu_write_by_name() - write data to DFU medium
+ * @dfu_entity_name:    Name of DFU entity to write
+ * @addr:               Address of data buffer to write
+ * @len:                Number of bytes
+ * @interface:          Destination DFU medium (e.g. "mmc")
+ * @devstring:          Instance number of destination DFU medium (e.g. "1")
+ *
+ * This function is storing data received on DFU supported medium which
+ * is specified by @dfu_entity_name.
+ *
+ * Return:              0 - on success, error code - otherwise
+ */
+int dfu_write_by_name(char *dfu_entity_name, unsigned int addr,
+		      unsigned int len, char *interface, char *devstring)
 {
 	char *s, *sb;
 	int alt_setting_num, ret;
@@ -44,7 +57,7 @@ int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len,
 	free(sb);
 	if (alt_setting_num < 0) {
 		pr_err("Alt setting [%d] to write not found!",
-		      alt_setting_num);
+		       alt_setting_num);
 		ret = -ENODEV;
 		goto done;
 	}
diff --git a/include/dfu.h b/include/dfu.h
index 84abdc79ac..a4cd86c0a6 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -494,27 +494,27 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
 #endif
 
 /**
- * dfu_tftp_write() - write TFTP data to DFU medium
+ * dfu_write_by_name() - write data to DFU medium
+ * @dfu_entity_name:	Name of DFU entity to write
+ * @addr:		Address of data buffer to write
+ * @len:		Number of bytes
+ * @interface:		Destination DFU medium (e.g. "mmc")
+ * @devstring:		Instance number of destination DFU medium (e.g. "1")
  *
- * This function is storing data received via TFTP on DFU supported medium.
+ * This function is storing data received on DFU supported medium which
+ * is specified by @dfu_entity_name.
  *
- * @dfu_entity_name:	name of DFU entity to write
- * @addr:		address of data buffer to write
- * @len:		number of bytes
- * @interface:		destination DFU medium (e.g. "mmc")
- * @devstring:		instance number of destination DFU medium (e.g. "1")
- *
- * Return:		0 on success, otherwise error code
+ * Return:		0 - on success, error code - otherwise
  */
-#if CONFIG_IS_ENABLED(DFU_TFTP)
-int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len,
-		   char *interface, char *devstring);
+#if CONFIG_IS_ENABLED(DFU_WRITE_ALT)
+int dfu_write_by_name(char *dfu_entity_name, unsigned int addr,
+		      unsigned int len, char *interface, char *devstring);
 #else
-static inline int dfu_tftp_write(char *dfu_entity_name, unsigned int addr,
-				 unsigned int len, char *interface,
-				 char *devstring)
+static inline int dfu_write_by_name(char *dfu_entity_name, unsigned int addr,
+				    unsigned int len, char *interface,
+				    char *devstring)
 {
-	puts("TFTP write support for DFU not available!\n");
+	puts("write support for DFU not available!\n");
 	return -ENOSYS;
 }
 #endif