expo: Add a function to prepare a cedit

Split out the code which prepares the cedit for use, so we can call it
from a test.

Add a log category while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 26 insertions, 6 deletions

diff --git a/boot/cedit.c b/boot/cedit.c
index 2d16086..6c10b21 100644
--- a/boot/cedit.c
+++ b/boot/cedit.c
@@ -6,6 +6,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY LOGC_EXPO
+
 #include <common.h>
 #include <cedit.h>
 #include <cli.h>
@@ -47,18 +49,15 @@ int cedit_arange(struct expo *exp, struct video_priv *vpriv, uint scene_id)
 	return 0;
 }
 
-int cedit_run(struct expo *exp)
+int cedit_prepare(struct expo *exp, struct video_priv **vid_privp,
+		  struct scene **scnp)
 {
-	struct cli_ch_state s_cch, *cch = &s_cch;
 	struct video_priv *vid_priv;
-	uint scene_id;
 	struct udevice *dev;
 	struct scene *scn;
-	bool done;
+	uint scene_id;
 	int ret;
 
-	cli_ch_init(cch);
-
 	/* For now we only support a video console */
 	ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
 	if (ret)
@@ -93,6 +92,27 @@ int cedit_run(struct expo *exp)
 	if (ret)
 		return log_msg_ret("dim", ret);
 
+	*vid_privp = vid_priv;
+	*scnp = scn;
+
+	return scene_id;
+}
+
+int cedit_run(struct expo *exp)
+{
+	struct cli_ch_state s_cch, *cch = &s_cch;
+	struct video_priv *vid_priv;
+	uint scene_id;
+	struct scene *scn;
+	bool done;
+	int ret;
+
+	cli_ch_init(cch);
+	ret = cedit_prepare(exp, &vid_priv, &scn);
+	if (ret < 0)
+		return log_msg_ret("prep", ret);
+	scene_id = ret;
+
 	done = false;
 	do {
 		struct expo_action act;