1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_barebox.c b/drivers/usb/musb/musb_barebox.c
new file mode 100644
index 0000000000..6bc232b570
--- /dev/null
+++ b/drivers/usb/musb/musb_barebox.c
@@ -0,0 +1,146 @@
+#include <common.h>
+#include <init.h>
+#include <clock.h>
+#include <usb/musb.h>
+#include <usb/usb.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/barebox-wrapper.h>
+
+#include "musb_core.h"
+#include "musb_gadget.h"
+
+static struct usb_host_endpoint hep;
+static struct urb urb;
+
+static void musb_host_complete_urb(struct urb *urb)
+{
+	urb->dev->status &= ~USB_ST_NOT_PROC;
+	urb->dev->act_len = urb->actual_length;
+}
+
+static struct urb *construct_urb(struct usb_device *dev, int endpoint_type,
+				unsigned long pipe, void *buffer, int len,
+				struct devrequest *setup, int interval)
+{
+	int epnum = usb_pipeendpoint(pipe);
+	int is_in = usb_pipein(pipe);
+
+	memset(&urb, 0, sizeof(struct urb));
+	memset(&hep, 0, sizeof(struct usb_host_endpoint));
+	INIT_LIST_HEAD(&hep.urb_list);
+	INIT_LIST_HEAD(&urb.urb_list);
+	urb.ep = &hep;
+	urb.complete = musb_host_complete_urb;
+	urb.status = -EINPROGRESS;
+	urb.dev = dev;
+	urb.pipe = pipe;
+	urb.transfer_buffer = buffer;
+	urb.transfer_dma = (unsigned long)buffer;
+	urb.transfer_buffer_length = len;
+	urb.setup_packet = (unsigned char *)setup;
+
+	urb.ep->desc.wMaxPacketSize =
+		__cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
+				dev->epmaxpacketout[epnum]);
+	urb.ep->desc.bmAttributes = endpoint_type;
+	urb.ep->desc.bEndpointAddress =
+		(is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
+	urb.ep->desc.bInterval = interval;
+
+	return &urb;
+}
+
+#define MUSB_HOST_TIMEOUT 0x5fffff
+
+static int submit_urb(struct usb_device *dev, struct urb *urb, int timeout_ms)
+{
+	struct usb_host *host = dev->host;
+	struct musb *musb = to_musb(host);
+	int ret;
+	uint64_t start;
+	uint64_t timeout = timeout_ms;
+
+	ret = musb_urb_enqueue(musb->hcd, urb, 0);
+	if (ret < 0) {
+		printf("Failed to enqueue URB to controller\n");
+		return ret;
+	}
+
+	start = get_time_ns();
+
+	do {
+		musb->isr(musb);
+
+		if (!urb->status)
+			return 0;
+
+	} while (!is_timeout(start, timeout * MSECOND));
+
+	if (urb->dev->status & USB_ST_NOT_PROC)
+		ret = -ETIMEDOUT;
+	else
+		ret = urb->status;
+
+	musb_urb_dequeue(musb->hcd, urb, -ECONNRESET);
+
+	return ret;
+}
+
+static int
+submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		int length, int timeout)
+{
+	struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
+					buffer, length, NULL, 0);
+	return submit_urb(dev, urb, timeout);
+}
+
+static int
+submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		   int length, struct devrequest *setup, int timeout)
+{
+	struct usb_host *host = dev->host;
+	struct musb *musb = to_musb(host);
+	struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
+					buffer, length, setup, 0);
+
+	/* Fix speed for non hub-attached devices */
+	if (!dev->parent)
+		dev->speed = musb->host_speed;
+
+	return submit_urb(dev, urb, timeout);
+}
+
+static int
+submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+	       int length, int interval)
+{
+	struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
+					buffer, length, NULL, interval);
+	return submit_urb(dev, urb, 100);
+}
+
+static int musb_detect(struct device_d *dev)
+{
+	struct musb *musb = dev->priv;
+
+	return usb_host_detect(&musb->host);
+}
+
+int musb_register(struct musb *musb)
+{
+	struct usb_host *host;
+
+	host = &musb->host;
+	host->hw_dev = musb->controller;
+	host->init = musb_init;
+	host->submit_int_msg = submit_int_msg;
+	host->submit_control_msg = submit_control_msg;
+	host->submit_bulk_msg = submit_bulk_msg;
+
+	musb->controller->detect = musb_detect;
+	usb_register_host(host);
+
+	return 0;
+}