usb: Drop dm.h header file

This header file should not be included in other header files. Remove it
and use a forward declaration instead.

Also move the inline function out into a C file. We should not include C
code in headers.

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

3 files changed, 47 insertions, 36 deletions

diff --git a/drivers/usb/musb-new/musb_uboot.c b/drivers/usb/musb-new/musb_uboot.c
index 988071a61d..8ac2f0a78a 100644
--- a/drivers/usb/musb-new/musb_uboot.c
+++ b/drivers/usb/musb-new/musb_uboot.c
@@ -1,5 +1,6 @@
 #include <common.h>
 #include <console.h>
+#include <dm.h>
 #include <malloc.h>
 #include <watchdog.h>
 #include <linux/delay.h>
@@ -452,3 +453,39 @@ struct musb *musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 
 	return *musbp;
 }
+
+#if CONFIG_IS_ENABLED(DM_USB)
+struct usb_device *usb_dev_get_parent(struct usb_device *udev)
+{
+	struct udevice *parent = udev->dev->parent;
+
+	/*
+	 * When called from usb-uclass.c: usb_scan_device() udev->dev points
+	 * to the parent udevice, not the actual udevice belonging to the
+	 * udev as the device is not instantiated yet.
+	 *
+	 * If dev is an usb-bus, then we are called from usb_scan_device() for
+	 * an usb-device plugged directly into the root port, return NULL.
+	 */
+	if (device_get_uclass_id(udev->dev) == UCLASS_USB)
+		return NULL;
+
+	/*
+	 * If these 2 are not the same we are being called from
+	 * usb_scan_device() and udev itself is the parent.
+	 */
+	if (dev_get_parent_priv(udev->dev) != udev)
+		return udev;
+
+	/* We are being called normally, use the parent pointer */
+	if (device_get_uclass_id(parent) == UCLASS_USB_HUB)
+		return dev_get_parent_priv(parent);
+
+	return NULL;
+}
+#else
+struct usb_device *usb_dev_get_parent(struct usb_device *udev)
+{
+	return udev->parent;
+}
+#endif
diff --git a/drivers/usb/musb-new/pic32.c b/drivers/usb/musb-new/pic32.c
index 74a841af46..2fbe9bebf1 100644
--- a/drivers/usb/musb-new/pic32.c
+++ b/drivers/usb/musb-new/pic32.c
@@ -10,6 +10,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <dm/device_compat.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
diff --git a/drivers/usb/musb-new/usb-compat.h b/drivers/usb/musb-new/usb-compat.h
index f2c18ad3a2..1c66c4fe36 100644
--- a/drivers/usb/musb-new/usb-compat.h
+++ b/drivers/usb/musb-new/usb-compat.h
@@ -1,9 +1,10 @@
 #ifndef __USB_COMPAT_H__
 #define __USB_COMPAT_H__
 
-#include <dm.h>
 #include "usb.h"
 
+struct udevice;
+
 struct usb_hcd {
 	void *hcd_priv;
 };
@@ -67,40 +68,12 @@ static inline int usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd,
 	return 0;
 }
 
-#if CONFIG_IS_ENABLED(DM_USB)
-static inline struct usb_device *usb_dev_get_parent(struct usb_device *udev)
-{
-	struct udevice *parent = udev->dev->parent;
-
-	/*
-	 * When called from usb-uclass.c: usb_scan_device() udev->dev points
-	 * to the parent udevice, not the actual udevice belonging to the
-	 * udev as the device is not instantiated yet.
-	 *
-	 * If dev is an usb-bus, then we are called from usb_scan_device() for
-	 * an usb-device plugged directly into the root port, return NULL.
-	 */
-	if (device_get_uclass_id(udev->dev) == UCLASS_USB)
-		return NULL;
-
-	/*
-	 * If these 2 are not the same we are being called from
-	 * usb_scan_device() and udev itself is the parent.
-	 */
-	if (dev_get_parent_priv(udev->dev) != udev)
-		return udev;
-
-	/* We are being called normally, use the parent pointer */
-	if (device_get_uclass_id(parent) == UCLASS_USB_HUB)
-		return dev_get_parent_priv(parent);
-
-	return NULL;
-}
-#else
-static inline struct usb_device *usb_dev_get_parent(struct usb_device *dev)
-{
-	return dev->parent;
-}
-#endif
+/**
+ * usb_dev_get_parent() - Get the parent of a USB device
+ *
+ * @udev: USB struct containing information about the device
+ * @return associated device for which udev == dev_get_parent_priv(dev)
+ */
+struct usb_device *usb_dev_get_parent(struct usb_device *udev);
 
 #endif /* __USB_COMPAT_H__ */