dfu, nand: add medium specific polltimeout function

add a possibility to add a medium specific polltimeout
function. So it is possible to define different
poll timeouts.

Used on nand medium, for setting the DFU_MANIFEST_POLL_TIMEOUT
only on nand ubi partitions, which is currently the only
usecase.

Change-Id: If1db5f49b32d93fefa7481e8dfe5b7ccc0e65af4
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>

drivers/dfu/dfu_nand.c

@@ -163,6 +163,18 @@ static int dfu_flush_medium_nand(struct dfu_entity *dfu)
 	return ret;
 }
 
+unsigned int dfu_polltimeout_nand(struct dfu_entity *dfu)
+{
+	/*
+	 * Currently, Poll Timeout != 0 is only needed on nand
+	 * ubi partition, as the not used sectors need an erase
+	 */
+	if (dfu->data.nand.ubi)
+		return DFU_MANIFEST_POLL_TIMEOUT;
+
+	return DFU_DEFAULT_POLL_TIMEOUT;
+}
+
 int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s)
 {
 	char *st;
@@ -211,6 +223,7 @@ int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s)
 	dfu->read_medium = dfu_read_medium_nand;
 	dfu->write_medium = dfu_write_medium_nand;
 	dfu->flush_medium = dfu_flush_medium_nand;
+	dfu->poll_timeout = dfu_polltimeout_nand;
 
 	/* initial state */
 	dfu->inited = 0;

drivers/usb/gadget/f_dfu.c

@@ -175,10 +175,17 @@ static void dnload_request_flush(struct usb_ep *ep, struct usb_request *req)
 		  req->length, f_dfu->blk_seq_num);
 }
 
+static inline int dfu_get_manifest_timeout(struct dfu_entity *dfu)
+{
+	return dfu->poll_timeout ? dfu->poll_timeout(dfu) :
+		DFU_MANIFEST_POLL_TIMEOUT;
+}
+
 static void handle_getstatus(struct usb_request *req)
 {
 	struct dfu_status *dstat = (struct dfu_status *)req->buf;
 	struct f_dfu *f_dfu = req->context;
+	struct dfu_entity *dfu = dfu_get_entity(f_dfu->altsetting);
 
 	dfu_set_poll_timeout(dstat, 0);
 
@@ -191,7 +198,8 @@ static void handle_getstatus(struct usb_request *req)
 		f_dfu->dfu_state = DFU_STATE_dfuMANIFEST;
 		break;
 	case DFU_STATE_dfuMANIFEST:
-		dfu_set_poll_timeout(dstat, DFU_MANIFEST_POLL_TIMEOUT);
+		dfu_set_poll_timeout(dstat, dfu_get_manifest_timeout(dfu));
+		break;
 	default:
 		break;
 	}

include/dfu.h

@@ -100,6 +100,7 @@ struct dfu_entity {
 			u64 offset, void *buf, long *len);
 
 	int (*flush_medium)(struct dfu_entity *dfu);
+	unsigned int (*poll_timeout)(struct dfu_entity *dfu);
 
 	struct list_head list;