[PATCH v2 16/17] dm: usb: udc: Drop legacy udevice handler functions

[Marek Vasut <marex@denx.de>]

Remove legacy functions limited by the dev_array array,
those are no longer used anywhere, all the code uses
plain udevice based access now.

The usb_gadget_handle_interrupts() is doing udevice look up
until all call sites use dm_usb_gadget_handle_interrupts().

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Angus Ainslie <angus@akkea.ca>
Cc: Dmitrii Merkurev <dimorinny@google.com>
Cc: Eddie Cai <eddie.cai.linux@gmail.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Cc: Philipp Tomsich <philipp.tomsich@vrull.eu>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Cc: kernel@puri.sm
---
V2: Add RB from Mattijs
---
 drivers/usb/gadget/udc/udc-uclass.c | 44 ++++-------------------------
 include/linux/usb/gadget.h          | 17 -----------
 2 files changed, 6 insertions(+), 55 deletions(-)

diff --git a/drivers/usb/gadget/udc/udc-uclass.c b/drivers/usb/gadget/udc/udc-uclass.c
index b4271b4be9f..7f54a3b00cb 100644
--- a/drivers/usb/gadget/udc/udc-uclass.c
+++ b/drivers/usb/gadget/udc/udc-uclass.c
@@ -12,9 +12,6 @@
 #include <linux/usb/gadget.h>
 
 #if CONFIG_IS_ENABLED(DM_USB_GADGET)
-#define MAX_UDC_DEVICES 4
-static struct udevice *dev_array[MAX_UDC_DEVICES];
-
 int udc_device_get_by_index(int index, struct udevice **udev)
 {
 	struct udevice *dev = NULL;
@@ -45,45 +42,16 @@ int udc_device_put(struct udevice *udev)
 #endif
 }
 
-int usb_gadget_initialize(int index)
-{
-	int ret;
-	struct udevice *dev = NULL;
-
-	if (index < 0 || index >= ARRAY_SIZE(dev_array))
-		return -EINVAL;
-	if (dev_array[index])
-		return 0;
-	ret = udc_device_get_by_index(index, &dev);
-	if (!dev || ret) {
-		pr_err("No USB device found\n");
-		return -ENODEV;
-	}
-	dev_array[index] = dev;
-	return 0;
-}
-
-int usb_gadget_release(int index)
+int usb_gadget_handle_interrupts(int index)
 {
-#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
+	struct udevice *udc;
 	int ret;
-	if (index < 0 || index >= ARRAY_SIZE(dev_array))
-		return -EINVAL;
 
-	ret = device_remove(dev_array[index]);
-	if (!ret)
-		dev_array[index] = NULL;
-	return ret;
-#else
-	return -ENOSYS;
-#endif
-}
+	ret = udc_device_get_by_index(index, &udc);
+	if (ret)
+		return ret;
 
-int usb_gadget_handle_interrupts(int index)
-{
-	if (index < 0 || index >= ARRAY_SIZE(dev_array))
-		return -EINVAL;
-	return dm_usb_gadget_handle_interrupts(dev_array[index]);
+	return dm_usb_gadget_handle_interrupts(udc);
 }
 #else
 /* Backwards hardware compatibility -- switch to DM_USB_GADGET */
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 5e9a6513d5b..54875d2716e 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -1023,21 +1023,4 @@ int udc_device_get_by_index(int index, struct udevice **udev);
  */
 int udc_device_put(struct udevice *udev);
 
-#if CONFIG_IS_ENABLED(DM_USB_GADGET)
-int usb_gadget_initialize(int index);
-int usb_gadget_release(int index);
-int dm_usb_gadget_handle_interrupts(struct udevice *dev);
-#else
-#include <usb.h>
-static inline int usb_gadget_initialize(int index)
-{
-	return board_usb_init(index, USB_INIT_DEVICE);
-}
-
-static inline int usb_gadget_release(int index)
-{
-	return board_usb_cleanup(index, USB_INIT_DEVICE);
-}
-#endif
-
 #endif	/* __LINUX_USB_GADGET_H */
-- 
2.40.1