453 lines
11 KiB
C
453 lines
11 KiB
C
#include <common.h>
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#include <watchdog.h>
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#ifdef CONFIG_ARCH_SUNXI
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#include <asm/arch/usb_phy.h>
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#endif
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#include <asm/errno.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <usb.h>
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#include "linux-compat.h"
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#include "usb-compat.h"
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#include "musb_core.h"
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#include "musb_host.h"
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#include "musb_gadget.h"
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#include "musb_uboot.h"
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#ifdef CONFIG_USB_MUSB_HOST
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struct int_queue {
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struct usb_host_endpoint hep;
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struct urb urb;
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};
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#ifndef CONFIG_DM_USB
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struct musb_host_data musb_host;
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#endif
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static void musb_host_complete_urb(struct urb *urb)
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{
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urb->dev->status &= ~USB_ST_NOT_PROC;
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urb->dev->act_len = urb->actual_length;
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}
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static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
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struct usb_device *dev, int endpoint_type,
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unsigned long pipe, void *buffer, int len,
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struct devrequest *setup, int interval)
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{
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int epnum = usb_pipeendpoint(pipe);
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int is_in = usb_pipein(pipe);
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memset(urb, 0, sizeof(struct urb));
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memset(hep, 0, sizeof(struct usb_host_endpoint));
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INIT_LIST_HEAD(&hep->urb_list);
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INIT_LIST_HEAD(&urb->urb_list);
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urb->ep = hep;
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urb->complete = musb_host_complete_urb;
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urb->status = -EINPROGRESS;
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urb->dev = dev;
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urb->pipe = pipe;
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urb->transfer_buffer = buffer;
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urb->transfer_dma = (unsigned long)buffer;
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urb->transfer_buffer_length = len;
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urb->setup_packet = (unsigned char *)setup;
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urb->ep->desc.wMaxPacketSize =
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__cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
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dev->epmaxpacketout[epnum]);
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urb->ep->desc.bmAttributes = endpoint_type;
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urb->ep->desc.bEndpointAddress =
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(is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
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urb->ep->desc.bInterval = interval;
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}
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static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
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{
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struct musb *host = hcd->hcd_priv;
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int ret;
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unsigned long timeout;
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ret = musb_urb_enqueue(hcd, urb, 0);
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if (ret < 0) {
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printf("Failed to enqueue URB to controller\n");
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return ret;
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}
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timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
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do {
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if (ctrlc())
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return -EIO;
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host->isr(0, host);
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} while (urb->status == -EINPROGRESS &&
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get_timer(0) < timeout);
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if (urb->status == -EINPROGRESS)
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musb_urb_dequeue(hcd, urb, -ETIME);
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return urb->status;
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}
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static int _musb_submit_control_msg(struct musb_host_data *host,
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struct usb_device *dev, unsigned long pipe,
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void *buffer, int len, struct devrequest *setup)
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{
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construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_CONTROL,
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pipe, buffer, len, setup, 0);
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/* Fix speed for non hub-attached devices */
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if (!usb_dev_get_parent(dev))
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dev->speed = host->host_speed;
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return submit_urb(&host->hcd, &host->urb);
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}
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static int _musb_submit_bulk_msg(struct musb_host_data *host,
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struct usb_device *dev, unsigned long pipe, void *buffer, int len)
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{
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construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_BULK,
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pipe, buffer, len, NULL, 0);
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return submit_urb(&host->hcd, &host->urb);
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}
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static int _musb_submit_int_msg(struct musb_host_data *host,
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struct usb_device *dev, unsigned long pipe,
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void *buffer, int len, int interval)
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{
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construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_INT, pipe,
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buffer, len, NULL, interval);
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return submit_urb(&host->hcd, &host->urb);
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}
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static struct int_queue *_musb_create_int_queue(struct musb_host_data *host,
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struct usb_device *dev, unsigned long pipe, int queuesize,
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int elementsize, void *buffer, int interval)
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{
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struct int_queue *queue;
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int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
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if (queuesize != 1) {
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printf("ERROR musb int-queues only support queuesize 1\n");
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return NULL;
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}
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if (dev->int_pending & (1 << index)) {
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printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
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return NULL;
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}
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queue = malloc(sizeof(*queue));
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if (!queue)
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return NULL;
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construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
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pipe, buffer, elementsize, NULL, interval);
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ret = musb_urb_enqueue(&host->hcd, &queue->urb, 0);
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if (ret < 0) {
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printf("Failed to enqueue URB to controller\n");
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free(queue);
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return NULL;
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}
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dev->int_pending |= 1 << index;
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return queue;
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}
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static int _musb_destroy_int_queue(struct musb_host_data *host,
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struct usb_device *dev, struct int_queue *queue)
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{
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int index = usb_pipein(queue->urb.pipe) * 16 +
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usb_pipeendpoint(queue->urb.pipe);
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if (queue->urb.status == -EINPROGRESS)
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musb_urb_dequeue(&host->hcd, &queue->urb, -ETIME);
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dev->int_pending &= ~(1 << index);
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free(queue);
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return 0;
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}
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static void *_musb_poll_int_queue(struct musb_host_data *host,
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struct usb_device *dev, struct int_queue *queue)
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{
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if (queue->urb.status != -EINPROGRESS)
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return NULL; /* URB has already completed in a prev. poll */
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host->host->isr(0, host->host);
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if (queue->urb.status != -EINPROGRESS)
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return queue->urb.transfer_buffer; /* Done */
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return NULL; /* URB still pending */
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}
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static int _musb_reset_root_port(struct musb_host_data *host,
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struct usb_device *dev)
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{
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void *mbase = host->host->mregs;
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u8 power;
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power = musb_readb(mbase, MUSB_POWER);
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power &= 0xf0;
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musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
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mdelay(50);
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#ifdef CONFIG_ARCH_SUNXI
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/*
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* sunxi phy has a bug and it will wrongly detect high speed squelch
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* when clearing reset on low-speed devices, temporary disable
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* squelch detection to work around this.
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*/
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sunxi_usb_phy_enable_squelch_detect(0, 0);
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#endif
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power = musb_readb(mbase, MUSB_POWER);
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musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
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#ifdef CONFIG_ARCH_SUNXI
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sunxi_usb_phy_enable_squelch_detect(0, 1);
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#endif
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host->host->isr(0, host->host);
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host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
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USB_SPEED_HIGH :
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(musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
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USB_SPEED_FULL : USB_SPEED_LOW;
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mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
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return 0;
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}
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int musb_lowlevel_init(struct musb_host_data *host)
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{
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void *mbase;
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/* USB spec says it may take up to 1 second for a device to connect */
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unsigned long timeout = get_timer(0) + 1000;
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int ret;
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if (!host->host) {
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printf("MUSB host is not registered\n");
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return -ENODEV;
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}
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ret = musb_start(host->host);
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if (ret)
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return ret;
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mbase = host->host->mregs;
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do {
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if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
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break;
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} while (get_timer(0) < timeout);
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if (get_timer(0) >= timeout)
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return -ENODEV;
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_musb_reset_root_port(host, NULL);
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host->host->is_active = 1;
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host->hcd.hcd_priv = host->host;
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return 0;
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}
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#ifndef CONFIG_DM_USB
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int usb_lowlevel_stop(int index)
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{
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if (!musb_host.host) {
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printf("MUSB host is not registered\n");
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return -ENODEV;
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}
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musb_stop(musb_host.host);
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return 0;
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}
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int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
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void *buffer, int length)
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{
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return _musb_submit_bulk_msg(&musb_host, dev, pipe, buffer, length);
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}
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int submit_control_msg(struct usb_device *dev, unsigned long pipe,
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void *buffer, int length, struct devrequest *setup)
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{
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return _musb_submit_control_msg(&musb_host, dev, pipe, buffer, length, setup);
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}
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int submit_int_msg(struct usb_device *dev, unsigned long pipe,
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void *buffer, int length, int interval)
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{
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return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length, interval);
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}
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struct int_queue *create_int_queue(struct usb_device *dev,
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unsigned long pipe, int queuesize, int elementsize,
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void *buffer, int interval)
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{
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return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
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buffer, interval);
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}
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void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
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{
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return _musb_poll_int_queue(&musb_host, dev, queue);
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}
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int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
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{
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return _musb_destroy_int_queue(&musb_host, dev, queue);
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}
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int usb_reset_root_port(struct usb_device *dev)
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{
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return _musb_reset_root_port(&musb_host, dev);
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}
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int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
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{
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return musb_lowlevel_init(&musb_host);
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}
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#endif /* !CONFIG_DM_USB */
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#ifdef CONFIG_DM_USB
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static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length,
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struct devrequest *setup)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
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}
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static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
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}
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static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length,
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int interval)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval);
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}
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static struct int_queue *musb_create_int_queue(struct udevice *dev,
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struct usb_device *udev, unsigned long pipe, int queuesize,
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int elementsize, void *buffer, int interval)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_create_int_queue(host, udev, pipe, queuesize, elementsize,
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buffer, interval);
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}
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static void *musb_poll_int_queue(struct udevice *dev, struct usb_device *udev,
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struct int_queue *queue)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_poll_int_queue(host, udev, queue);
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}
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static int musb_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
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struct int_queue *queue)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_destroy_int_queue(host, udev, queue);
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}
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static int musb_reset_root_port(struct udevice *dev, struct usb_device *udev)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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return _musb_reset_root_port(host, udev);
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}
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struct dm_usb_ops musb_usb_ops = {
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.control = musb_submit_control_msg,
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.bulk = musb_submit_bulk_msg,
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.interrupt = musb_submit_int_msg,
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.create_int_queue = musb_create_int_queue,
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.poll_int_queue = musb_poll_int_queue,
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.destroy_int_queue = musb_destroy_int_queue,
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.reset_root_port = musb_reset_root_port,
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};
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#endif /* CONFIG_DM_USB */
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#endif /* CONFIG_USB_MUSB_HOST */
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#ifdef CONFIG_USB_MUSB_GADGET
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static struct musb *gadget;
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int usb_gadget_handle_interrupts(int index)
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{
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WATCHDOG_RESET();
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if (!gadget || !gadget->isr)
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return -EINVAL;
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return gadget->isr(0, gadget);
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}
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int usb_gadget_register_driver(struct usb_gadget_driver *driver)
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{
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int ret;
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if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
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!driver->setup) {
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printf("bad parameter.\n");
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return -EINVAL;
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}
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if (!gadget) {
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printf("Controller uninitialized\n");
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return -ENXIO;
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}
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ret = musb_gadget_start(&gadget->g, driver);
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if (ret < 0) {
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printf("gadget_start failed with %d\n", ret);
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return ret;
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}
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ret = driver->bind(&gadget->g);
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if (ret < 0) {
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printf("bind failed with %d\n", ret);
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return ret;
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}
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return 0;
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}
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int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
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{
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if (driver->disconnect)
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driver->disconnect(&gadget->g);
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if (driver->unbind)
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driver->unbind(&gadget->g);
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return 0;
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}
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#endif /* CONFIG_USB_MUSB_GADGET */
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int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
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void *ctl_regs)
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{
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struct musb **musbp;
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switch (plat->mode) {
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#if defined(CONFIG_USB_MUSB_HOST) && !defined(CONFIG_DM_USB)
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case MUSB_HOST:
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musbp = &musb_host.host;
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break;
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#endif
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#ifdef CONFIG_USB_MUSB_GADGET
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case MUSB_PERIPHERAL:
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musbp = &gadget;
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break;
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#endif
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default:
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return -EINVAL;
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}
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*musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
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if (!musbp) {
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printf("Failed to init the controller\n");
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return -EIO;
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}
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return 0;
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}
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