When DM_USB_GADGET the platform code for the USB device must be replaced by
calls to a USB device driver.
usb_gadget_initialize() probes the USB device driver.
usb_gadget_release() removes the USB device driver.
Signed-off-by: Jean-Jacques Hiblot <jjhib...@ti.com>
Reviewed-by: Lukasz Majewski <lu...@denx.de>
---
Changes in v4: None
Changes in v3: None
Changes in v2: None
drivers/usb/dwc3/dwc3-generic.c | 14 ++-----------
drivers/usb/gadget/udc/udc-core.c | 44 ++++++++++++++++++++++++++++++++++++++-
include/linux/usb/gadget.h | 8 +++++++
3 files changed, 53 insertions(+), 13 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index ad3a116..47cc140 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -22,19 +22,9 @@
#include "linux-compat.h"
#if CONFIG_IS_ENABLED(DM_USB_GADGET)
-int usb_gadget_handle_interrupts(int index)
+int dm_usb_gadget_handle_interrupts(struct udevice *dev)
{
- struct dwc3 *priv;
- struct udevice *dev;
- int ret;
-
- ret = uclass_first_device(UCLASS_USB_DEV_GENERIC, &dev);
- if (!dev || ret) {
- pr_err("No USB device found\n");
- return -ENODEV;
- }
-
- priv = dev_get_priv(dev);
+ struct dwc3 *priv = dev_get_priv(dev);
dwc3_gadget_uboot_handle_interrupt(priv);
diff --git a/drivers/usb/gadget/udc/udc-core.c
b/drivers/usb/gadget/udc/udc-core.c
index f5c30dd..34bea27 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -18,7 +18,8 @@
#include <asm/cache.h>
#include <asm/dma-mapping.h>
#include <common.h>
-
+#include <dm.h>
+#include <dm/device-internal.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -351,3 +352,44 @@ EXPORT_SYMBOL_GPL(usb_gadget_unregister_driver);
MODULE_DESCRIPTION("UDC Framework");
MODULE_AUTHOR("Felipe Balbi <ba...@ti.com>");
MODULE_LICENSE("GPL v2");
+
+#if CONFIG_IS_ENABLED(DM_USB_GADGET)
+#define MAX_UDC_DEVICES 4
+static struct udevice *dev_array[MAX_UDC_DEVICES];
+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 = uclass_get_device(UCLASS_USB_DEV_GENERIC, 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 ret;
+
+ if (index < 0 || index >= ARRAY_SIZE(dev_array))
+ return -EINVAL;
+ ret = device_remove(dev_array[index], DM_REMOVE_NORMAL);
+ if (!ret)
+ dev_array[index] = NULL;
+ 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]);
+}
+#endif
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 40ca2d3..497798a 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -927,6 +927,12 @@ extern void usb_ep_autoconfig_reset(struct usb_gadget *);
extern int usb_gadget_handle_interrupts(int index);
+#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);
@@ -936,4 +942,6 @@ static inline int usb_gadget_release(int index)
{
return board_usb_cleanup(index, USB_INIT_DEVICE);
}
+#endif
+
#endif /* __LINUX_USB_GADGET_H */
--
2.7.4
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
