diff options
| author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2018-11-29 10:52:43 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2018-12-07 16:31:45 +0100 |
| commit | ff8d75583487eb69bcb6f036088d979c76db3753 (patch) | |
| tree | 942df5b32b69a83c7b297b6eb372c1fbbec328c9 | |
| parent | 687ab54560809e01a10652ef82dbac6ae72deb91 (diff) | |
usb: udc: implement DM versions of usb_gadget_initialize()/_release()/_handle_interrupt()
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 <jjhiblot@ti.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
| -rw-r--r-- | drivers/usb/dwc3/dwc3-generic.c | 14 | ||||
| -rw-r--r-- | drivers/usb/gadget/udc/udc-core.c | 44 | ||||
| -rw-r--r-- | 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 ad3a116b3e..47cc140ddf 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 f5c30dd750..34bea27ad8 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 <balbi@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 40ca2d3468..497798a32a 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 */ |