Freescale u-boot repository
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#include <common.h>
#include <console.h>
#include <watchdog.h>
#ifdef CONFIG_ARCH_SUNXI
#include <asm/arch/usb_phy.h>
#endif
#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"
#include "musb_uboot.h"
#ifdef CONFIG_USB_MUSB_HOST
struct int_queue {
struct usb_host_endpoint hep;
struct urb urb;
};
#ifndef CONFIG_DM_USB
struct musb_host_data musb_host;
#endif
static void musb_host_complete_urb(struct urb *urb)
{
urb->dev->status &= ~USB_ST_NOT_PROC;
urb->dev->act_len = urb->actual_length;
}
static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
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;
}
static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
{
struct musb *host = hcd->hcd_priv;
int ret;
unsigned long timeout;
ret = musb_urb_enqueue(hcd, urb, 0);
if (ret < 0) {
printf("Failed to enqueue URB to controller\n");
return ret;
}
timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
do {
if (ctrlc())
return -EIO;
host->isr(0, host);
} while (urb->status == -EINPROGRESS &&
get_timer(0) < timeout);
if (urb->status == -EINPROGRESS)
musb_urb_dequeue(hcd, urb, -ETIME);
return urb->status;
}
static int _musb_submit_control_msg(struct musb_host_data *host,
struct usb_device *dev, unsigned long pipe,
void *buffer, int len, struct devrequest *setup)
{
construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_CONTROL,
pipe, buffer, len, setup, 0);
/* Fix speed for non hub-attached devices */
if (!usb_dev_get_parent(dev))
dev->speed = host->host_speed;
return submit_urb(&host->hcd, &host->urb);
}
static int _musb_submit_bulk_msg(struct musb_host_data *host,
struct usb_device *dev, unsigned long pipe, void *buffer, int len)
{
construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_BULK,
pipe, buffer, len, NULL, 0);
return submit_urb(&host->hcd, &host->urb);
}
static int _musb_submit_int_msg(struct musb_host_data *host,
struct usb_device *dev, unsigned long pipe,
void *buffer, int len, int interval)
{
construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_INT, pipe,
buffer, len, NULL, interval);
return submit_urb(&host->hcd, &host->urb);
}
static struct int_queue *_musb_create_int_queue(struct musb_host_data *host,
struct usb_device *dev, unsigned long pipe, int queuesize,
int elementsize, void *buffer, int interval)
{
struct int_queue *queue;
int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
if (queuesize != 1) {
printf("ERROR musb int-queues only support queuesize 1\n");
return NULL;
}
if (dev->int_pending & (1 << index)) {
printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
return NULL;
}
queue = malloc(sizeof(*queue));
if (!queue)
return NULL;
construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
pipe, buffer, elementsize, NULL, interval);
ret = musb_urb_enqueue(&host->hcd, &queue->urb, 0);
if (ret < 0) {
printf("Failed to enqueue URB to controller\n");
free(queue);
return NULL;
}
dev->int_pending |= 1 << index;
return queue;
}
static int _musb_destroy_int_queue(struct musb_host_data *host,
struct usb_device *dev, struct int_queue *queue)
{
int index = usb_pipein(queue->urb.pipe) * 16 +
usb_pipeendpoint(queue->urb.pipe);
if (queue->urb.status == -EINPROGRESS)
musb_urb_dequeue(&host->hcd, &queue->urb, -ETIME);
dev->int_pending &= ~(1 << index);
free(queue);
return 0;
}
static void *_musb_poll_int_queue(struct musb_host_data *host,
struct usb_device *dev, struct int_queue *queue)
{
if (queue->urb.status != -EINPROGRESS)
return NULL; /* URB has already completed in a prev. poll */
host->host->isr(0, host->host);
if (queue->urb.status != -EINPROGRESS)
return queue->urb.transfer_buffer; /* Done */
return NULL; /* URB still pending */
}
static int _musb_reset_root_port(struct musb_host_data *host,
struct usb_device *dev)
{
void *mbase = host->host->mregs;
u8 power;
power = musb_readb(mbase, MUSB_POWER);
power &= 0xf0;
musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
mdelay(50);
#ifdef CONFIG_ARCH_SUNXI
/*
* sunxi phy has a bug and it will wrongly detect high speed squelch
* when clearing reset on low-speed devices, temporary disable
* squelch detection to work around this.
*/
sunxi_usb_phy_enable_squelch_detect(0, 0);
#endif
power = musb_readb(mbase, MUSB_POWER);
musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
#ifdef CONFIG_ARCH_SUNXI
sunxi_usb_phy_enable_squelch_detect(0, 1);
#endif
host->host->isr(0, host->host);
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;
mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
return 0;
}
int musb_lowlevel_init(struct musb_host_data *host)
{
void *mbase;
/* USB spec says it may take up to 1 second for a device to connect */
unsigned long timeout = get_timer(0) + 1000;
int ret;
if (!host->host) {
printf("MUSB host is not registered\n");
return -ENODEV;
}
ret = musb_start(host->host);
if (ret)
return ret;
mbase = host->host->mregs;
do {
if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
break;
} while (get_timer(0) < timeout);
if (get_timer(0) >= timeout)
return -ENODEV;
_musb_reset_root_port(host, NULL);
host->host->is_active = 1;
host->hcd.hcd_priv = host->host;
return 0;
}
#ifndef CONFIG_DM_USB
int usb_lowlevel_stop(int index)
{
if (!musb_host.host) {
printf("MUSB host is not registered\n");
return -ENODEV;
}
musb_stop(musb_host.host);
return 0;
}
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int length)
{
return _musb_submit_bulk_msg(&musb_host, dev, pipe, buffer, length);
}
int submit_control_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int length, struct devrequest *setup)
{
return _musb_submit_control_msg(&musb_host, dev, pipe, buffer, length, setup);
}
int submit_int_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int length, int interval)
{
return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length, interval);
}
struct int_queue *create_int_queue(struct usb_device *dev,
unsigned long pipe, int queuesize, int elementsize,
void *buffer, int interval)
{
return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
buffer, interval);
}
void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
{
return _musb_poll_int_queue(&musb_host, dev, queue);
}
int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
{
return _musb_destroy_int_queue(&musb_host, dev, queue);
}
int usb_reset_root_port(struct usb_device *dev)
{
return _musb_reset_root_port(&musb_host, dev);
}
int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
{
return musb_lowlevel_init(&musb_host);
}
#endif /* !CONFIG_DM_USB */
#ifdef CONFIG_DM_USB
static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
unsigned long pipe, void *buffer, int length,
struct devrequest *setup)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
}
static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
unsigned long pipe, void *buffer, int length)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
}
static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
unsigned long pipe, void *buffer, int length,
int interval)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval);
}
static struct int_queue *musb_create_int_queue(struct udevice *dev,
struct usb_device *udev, unsigned long pipe, int queuesize,
int elementsize, void *buffer, int interval)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_create_int_queue(host, udev, pipe, queuesize, elementsize,
buffer, interval);
}
static void *musb_poll_int_queue(struct udevice *dev, struct usb_device *udev,
struct int_queue *queue)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_poll_int_queue(host, udev, queue);
}
static int musb_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
struct int_queue *queue)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_destroy_int_queue(host, udev, queue);
}
static int musb_reset_root_port(struct udevice *dev, struct usb_device *udev)
{
struct musb_host_data *host = dev_get_priv(dev);
return _musb_reset_root_port(host, udev);
}
struct dm_usb_ops musb_usb_ops = {
.control = musb_submit_control_msg,
.bulk = musb_submit_bulk_msg,
.interrupt = musb_submit_int_msg,
.create_int_queue = musb_create_int_queue,
.poll_int_queue = musb_poll_int_queue,
.destroy_int_queue = musb_destroy_int_queue,
.reset_root_port = musb_reset_root_port,
};
#endif /* CONFIG_DM_USB */
#endif /* CONFIG_USB_MUSB_HOST */
#ifdef CONFIG_USB_MUSB_GADGET
static struct musb *gadget;
int usb_gadget_handle_interrupts(int index)
{
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_USB_MUSB_GADGET */
int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
void *ctl_regs)
{
struct musb **musbp;
switch (plat->mode) {
#if defined(CONFIG_USB_MUSB_HOST) && !defined(CONFIG_DM_USB)
case MUSB_HOST:
musbp = &musb_host.host;
break;
#endif
#ifdef CONFIG_USB_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;
}