ata: ahci_mvebu: add scsi support

Mvebu AHCI is AHCI driver which uses SCSI under the hood.
This patch adjusts AHCI setup to support SCSI by creating
a SCSI device as a child. Since the functions of creating
SCSI device need the kconfig option DM_SCSI, so let
AHCI_MVEBU select DM_SCSI.

Signed-off-by: Ken Ma <make@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Stefan Roese <sr@denx.de>

drivers/ata/Kconfig

@@ -104,6 +104,7 @@ config AHCI_MVEBU
 	depends on ARCH_MVEBU
 	depends on AHCI
 	select SCSI_AHCI
+	select DM_SCSI
 	help
 	  This option enables support for the Marvell EBU SoC's
 	  onboard AHCI SATA.

drivers/ata/ahci_mvebu.c

@@ -16,6 +16,20 @@ __weak int board_ahci_enable(void)
 	return 0;
 }
 
+static int mvebu_ahci_bind(struct udevice *dev)
+{
+	struct udevice *scsi_dev;
+	int ret;
+
+	ret = ahci_bind_scsi(dev, &scsi_dev);
+	if (ret) {
+		debug("%s: Failed to bind (err=%d\n)", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
 static int mvebu_ahci_probe(struct udevice *dev)
 {
 	/*
@@ -24,7 +38,7 @@ static int mvebu_ahci_probe(struct udevice *dev)
 	 */
 	board_ahci_enable();
 
-	ahci_init(devfdt_get_addr_ptr(dev));
+	ahci_probe_scsi(dev, (ulong)devfdt_get_addr_ptr(dev));
 
 	return 0;
 }
@@ -39,5 +53,6 @@ U_BOOT_DRIVER(ahci_mvebu_drv) = {
 	.name		= "ahci_mvebu",
 	.id		= UCLASS_AHCI,
 	.of_match	= mvebu_ahci_ids,
+	.bind		= mvebu_ahci_bind,
 	.probe		= mvebu_ahci_probe,
 };