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#include <common.h>
#include <watchdog.h>
#include <asm/errno.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <usb.h>
#include "linux-compat.h"
#include "usb-compat.h"
#include "musb_core.h"
#include "musb_host.h"
#include "musb_gadget.h"
#ifdef CONFIG_MUSB_HOST
static struct musb *host;
static struct usb_hcd hcd;
static enum usb_device_speed host_speed;
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 usb_host_endpoint hep;
static struct urb urb;
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 0x3ffffff
static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
{
struct musb *host = hcd->hcd_priv;
int ret;
int timeout;
ret = musb_urb_enqueue(hcd, urb, 0);
if (ret < 0) {
printf("Failed to enqueue URB to controller\n");
return ret;
}
timeout = MUSB_HOST_TIMEOUT;
do {
if (ctrlc())
return -EIO;
host->isr(0, host);
} while ((urb->dev->status & USB_ST_NOT_PROC) && --timeout);
return urb->status;
}
int submit_control_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int len, struct devrequest *setup)
{
struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
buffer, len, setup, 0);
/* Fix speed for non hub-attached devices */
if (!dev->parent)
dev->speed = host_speed;
return submit_urb(&hcd, urb);
}
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int len)
{
struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
buffer, len, NULL, 0);
return submit_urb(&hcd, urb);
}
int submit_int_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int len, int interval)
{
struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
buffer, len, NULL, interval);
return submit_urb(&hcd, urb);
}
int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
{
u8 power;
void *mbase;
int timeout = MUSB_HOST_TIMEOUT;
if (!host) {
printf("MUSB host is not registered\n");
return -ENODEV;
}
musb_start(host);
mbase = host->mregs;
do {
if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
break;
} while (--timeout);
if (!timeout)
return -ENODEV;
power = musb_readb(mbase, MUSB_POWER);
musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
udelay(30000);
power = musb_readb(mbase, MUSB_POWER);
musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
host->isr(0, host);
host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
USB_SPEED_HIGH :
(musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
USB_SPEED_FULL : USB_SPEED_LOW;
host->is_active = 1;
hcd.hcd_priv = host;
return 0;
}
int usb_lowlevel_stop(int index)
{
if (!host) {
printf("MUSB host is not registered\n");
return -ENODEV;
}
musb_stop(host);
return 0;
}
#endif /* CONFIG_MUSB_HOST */
#ifdef CONFIG_MUSB_GADGET
static struct musb *gadget;
int usb_gadget_handle_interrupts(void)
{
WATCHDOG_RESET();
if (!gadget || !gadget->isr)
return -EINVAL;
return gadget->isr(0, gadget);
}
int usb_gadget_register_driver(struct usb_gadget_driver *driver)
{
int ret;
if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
!driver->setup) {
printf("bad parameter.\n");
return -EINVAL;
}
if (!gadget) {
printf("Controller uninitialized\n");
return -ENXIO;
}
ret = musb_gadget_start(&gadget->g, driver);
if (ret < 0) {
printf("gadget_start failed with %d\n", ret);
return ret;
}
ret = driver->bind(&gadget->g);
if (ret < 0) {
printf("bind failed with %d\n", ret);
return ret;
}
return 0;
}
int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
{
if (driver->disconnect)
driver->disconnect(&gadget->g);
if (driver->unbind)
driver->unbind(&gadget->g);
return 0;
}
#endif /* CONFIG_MUSB_GADGET */
int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
void *ctl_regs)
{
struct musb **musbp;
switch (plat->mode) {
#ifdef CONFIG_MUSB_HOST
case MUSB_HOST:
musbp = &host;
break;
#endif
#ifdef CONFIG_MUSB_GADGET
case MUSB_PERIPHERAL:
musbp = &gadget;
break;
#endif
default:
return -EINVAL;
}
*musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
if (!musbp) {
printf("Failed to init the controller\n");
return -EIO;
}
return 0;
}
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