dm: scsi: Adjust the 'scsi' command to use blk_common_cmd()

Instead of having separate code in the 'scsi' command, adjust it to use
the common function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

cmd/scsi.c

@@ -29,11 +29,7 @@ static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 {
 	int ret;
 
-	switch (argc) {
-	case 0:
-	case 1:
-		return CMD_RET_USAGE;
-	case 2:
+	if (argc == 2) {
 		if (strncmp(argv[1], "res", 3) == 0) {
 			printf("\nReset SCSI\n");
 #ifndef CONFIG_DM_SCSI
@@ -44,84 +40,15 @@ static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 				return CMD_RET_FAILURE;
 			return ret;
 		}
-		if (strncmp(argv[1], "inf", 3) == 0) {
-			blk_list_devices(IF_TYPE_SCSI);
-			return 0;
-		}
-		if (strncmp(argv[1], "dev", 3) == 0) {
-			if (blk_print_device_num(IF_TYPE_SCSI, scsi_curr_dev)) {
-				printf("\nno SCSI devices available\n");
-				return CMD_RET_FAILURE;
-			}
-
-			return 0;
-		}
 		if (strncmp(argv[1], "scan", 4) == 0) {
 			ret = scsi_scan(true);
 			if (ret)
 				return CMD_RET_FAILURE;
 			return ret;
 		}
-		if (strncmp(argv[1], "part", 4) == 0) {
-			if (blk_list_part(IF_TYPE_SCSI))
-				printf("\nno SCSI devices available\n");
-			return 0;
-		}
-		return CMD_RET_USAGE;
-	case 3:
-		if (strncmp(argv[1], "dev", 3) == 0) {
-			int dev = (int)simple_strtoul(argv[2], NULL, 10);
+	}
 
-			if (!blk_show_device(IF_TYPE_SCSI, dev)) {
-				scsi_curr_dev = dev;
-				printf("... is now current device\n");
-			} else {
-				return CMD_RET_FAILURE;
-			}
-			return 0;
-		}
-		if (strncmp(argv[1], "part", 4) == 0) {
-			int dev = (int)simple_strtoul(argv[2], NULL, 10);
-
-			if (blk_print_part_devnum(IF_TYPE_SCSI, dev)) {
-				printf("\nSCSI device %d not available\n",
-				       dev);
-				return CMD_RET_FAILURE;
-			}
-			return 0;
-		}
-		return CMD_RET_USAGE;
-	default:
-		/* at least 4 args */
-		if (strcmp(argv[1], "read") == 0) {
-			ulong addr = simple_strtoul(argv[2], NULL, 16);
-			ulong blk  = simple_strtoul(argv[3], NULL, 16);
-			ulong cnt  = simple_strtoul(argv[4], NULL, 16);
-			ulong n;
-
-			printf("\nSCSI read: device %d block # %ld, count %ld ... ",
-			       scsi_curr_dev, blk, cnt);
-			n = blk_read_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
-					    cnt, (ulong *)addr);
-			printf("%ld blocks read: %s\n", n,
-			       n == cnt ? "OK" : "ERROR");
-			return 0;
-		} else if (strcmp(argv[1], "write") == 0) {
-			ulong addr = simple_strtoul(argv[2], NULL, 16);
-			ulong blk = simple_strtoul(argv[3], NULL, 16);
-			ulong cnt = simple_strtoul(argv[4], NULL, 16);
-			ulong n;
-
-			printf("\nSCSI write: device %d block # %ld, count %ld ... ",
-			       scsi_curr_dev, blk, cnt);
-			n = blk_write_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
-					     cnt, (ulong *)addr);
-			printf("%ld blocks written: %s\n", n,
-			       n == cnt ? "OK" : "ERROR");
-			return 0;
-		}
-	} /* switch */
-	return CMD_RET_USAGE;
+	return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev);
 }
 
 U_BOOT_CMD(