mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
702 lines
17 KiB
C
702 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* PXA27x USB device driver for u-boot.
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*
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* Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it>
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* Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it>
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* Copyright (C) 2008 Vivek Kutal <vivek.kutal@azingo.com>
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*/
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#include <common.h>
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#include <asm/arch/hardware.h>
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#include <asm/byteorder.h>
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#include <asm/io.h>
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#include <usbdevice.h>
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#include <usb/pxa27x_udc.h>
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#include <usb/udc.h>
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#include "ep0.h"
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/* number of endpoints on this UDC */
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#define UDC_MAX_ENDPOINTS 24
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static struct urb *ep0_urb;
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static struct usb_device_instance *udc_device;
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static int ep0state = EP0_IDLE;
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#ifdef USBDDBG
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static void udc_dump_buffer(char *name, u8 *buf, int len)
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{
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usbdbg("%s - buf %p, len %d", name, buf, len);
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print_buffer(0, buf, 1, len, 0);
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}
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#else
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#define udc_dump_buffer(name, buf, len) /* void */
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#endif
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static inline void udc_ack_int_UDCCR(int mask)
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{
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writel(readl(USIR1) | mask, USIR1);
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}
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/*
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* If the endpoint has an active tx_urb, then the next packet of data from the
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* URB is written to the tx FIFO.
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* The total amount of data in the urb is given by urb->actual_length.
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* The maximum amount of data that can be sent in any one packet is given by
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* endpoint->tx_packetSize.
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* The number of data bytes from this URB that have already been transmitted
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* is given by endpoint->sent.
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* endpoint->last is updated by this routine with the number of data bytes
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* transmitted in this packet.
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*/
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static int udc_write_urb(struct usb_endpoint_instance *endpoint)
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{
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struct urb *urb = endpoint->tx_urb;
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int ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
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u32 *data32 = (u32 *) urb->buffer;
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u8 *data8 = (u8 *) urb->buffer;
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unsigned int i, n, w, b, is_short;
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int timeout = 2000; /* 2ms */
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if (!urb || !urb->actual_length)
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return -1;
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n = min_t(unsigned int, urb->actual_length - endpoint->sent,
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endpoint->tx_packetSize);
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if (n <= 0)
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return -1;
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usbdbg("write urb on ep %d", ep_num);
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#if defined(USBDDBG) && defined(USBDPARANOIA)
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usbdbg("urb: buf %p, buf_len %d, actual_len %d",
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urb->buffer, urb->buffer_length, urb->actual_length);
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usbdbg("endpoint: sent %d, tx_packetSize %d, last %d",
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endpoint->sent, endpoint->tx_packetSize, endpoint->last);
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#endif
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is_short = n != endpoint->tx_packetSize;
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w = n / 4;
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b = n % 4;
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usbdbg("n %d%s w %d b %d", n, is_short ? "-s" : "", w, b);
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udc_dump_buffer("urb write", data8 + endpoint->sent, n);
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/* Prepare for data send */
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if (ep_num)
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writel(UDCCSR_PC ,UDCCSN(ep_num));
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for (i = 0; i < w; i++)
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writel(data32[endpoint->sent / 4 + i], UDCDN(ep_num));
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for (i = 0; i < b; i++)
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writeb(data8[endpoint->sent + w * 4 + i], UDCDN(ep_num));
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/* Set "Packet Complete" if less data then tx_packetSize */
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if (is_short)
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writel(ep_num ? UDCCSR_SP : UDCCSR0_IPR, UDCCSN(ep_num));
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/* Wait for data sent */
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if (ep_num) {
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while (!(readl(UDCCSN(ep_num)) & UDCCSR_PC)) {
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if (timeout-- == 0)
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return -1;
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else
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udelay(1);
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}
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}
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endpoint->last = n;
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if (ep_num) {
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usbd_tx_complete(endpoint);
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} else {
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endpoint->sent += n;
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endpoint->last -= n;
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}
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if (endpoint->sent >= urb->actual_length) {
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urb->actual_length = 0;
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endpoint->sent = 0;
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endpoint->last = 0;
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}
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if ((endpoint->sent >= urb->actual_length) && (!ep_num)) {
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usbdbg("ep0 IN stage done");
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if (is_short)
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ep0state = EP0_IDLE;
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else
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ep0state = EP0_XFER_COMPLETE;
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}
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return 0;
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}
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static int udc_read_urb(struct usb_endpoint_instance *endpoint)
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{
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struct urb *urb = endpoint->rcv_urb;
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int ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
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u32 *data32 = (u32 *) urb->buffer;
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unsigned int i, n;
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usbdbg("read urb on ep %d", ep_num);
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#if defined(USBDDBG) && defined(USBDPARANOIA)
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usbdbg("urb: buf %p, buf_len %d, actual_len %d",
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urb->buffer, urb->buffer_length, urb->actual_length);
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usbdbg("endpoint: rcv_packetSize %d",
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endpoint->rcv_packetSize);
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#endif
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if (readl(UDCCSN(ep_num)) & UDCCSR_BNE)
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n = readl(UDCBCN(ep_num)) & 0x3ff;
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else /* zlp */
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n = 0;
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usbdbg("n %d%s", n, n != endpoint->rcv_packetSize ? "-s" : "");
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for (i = 0; i < n; i += 4)
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data32[urb->actual_length / 4 + i / 4] = readl(UDCDN(ep_num));
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udc_dump_buffer("urb read", (u8 *) data32, urb->actual_length + n);
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usbd_rcv_complete(endpoint, n, 0);
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return 0;
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}
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static int udc_read_urb_ep0(void)
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{
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u32 *data32 = (u32 *) ep0_urb->buffer;
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u8 *data8 = (u8 *) ep0_urb->buffer;
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unsigned int i, n, w, b;
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usbdbg("read urb on ep 0");
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#if defined(USBDDBG) && defined(USBDPARANOIA)
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usbdbg("urb: buf %p, buf_len %d, actual_len %d",
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ep0_urb->buffer, ep0_urb->buffer_length, ep0_urb->actual_length);
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#endif
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n = readl(UDCBCR0);
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w = n / 4;
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b = n % 4;
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for (i = 0; i < w; i++) {
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data32[ep0_urb->actual_length / 4 + i] = readl(UDCDN(0));
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/* ep0_urb->actual_length += 4; */
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}
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for (i = 0; i < b; i++) {
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data8[ep0_urb->actual_length + w * 4 + i] = readb(UDCDN(0));
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/* ep0_urb->actual_length++; */
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}
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ep0_urb->actual_length += n;
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udc_dump_buffer("urb read", (u8 *) data32, ep0_urb->actual_length);
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writel(UDCCSR0_OPC | UDCCSR0_IPR, UDCCSR0);
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if (ep0_urb->actual_length == ep0_urb->device_request.wLength)
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return 1;
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return 0;
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}
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static void udc_handle_ep0(struct usb_endpoint_instance *endpoint)
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{
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u32 udccsr0 = readl(UDCCSR0);
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u32 *data = (u32 *) &ep0_urb->device_request;
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int i;
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usbdbg("udccsr0 %x", udccsr0);
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/* Clear stall status */
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if (udccsr0 & UDCCSR0_SST) {
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usberr("clear stall status");
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writel(UDCCSR0_SST, UDCCSR0);
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ep0state = EP0_IDLE;
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}
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/* previous request unfinished? non-error iff back-to-back ... */
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if ((udccsr0 & UDCCSR0_SA) != 0 && ep0state != EP0_IDLE)
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ep0state = EP0_IDLE;
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switch (ep0state) {
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case EP0_IDLE:
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udccsr0 = readl(UDCCSR0);
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/* Start control request? */
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if ((udccsr0 & (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE))
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== (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE)) {
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/* Read SETUP packet.
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* SETUP packet size is 8 bytes (aka 2 words)
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*/
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usbdbg("try reading SETUP packet");
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for (i = 0; i < 2; i++) {
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if ((readl(UDCCSR0) & UDCCSR0_RNE) == 0) {
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usberr("setup packet too short:%d", i);
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goto stall;
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}
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data[i] = readl(UDCDR0);
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}
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writel(readl(UDCCSR0) | UDCCSR0_OPC | UDCCSR0_SA, UDCCSR0);
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if ((readl(UDCCSR0) & UDCCSR0_RNE) != 0) {
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usberr("setup packet too long");
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goto stall;
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}
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udc_dump_buffer("ep0 setup read", (u8 *) data, 8);
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if (ep0_urb->device_request.wLength == 0) {
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usbdbg("Zero Data control Packet\n");
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if (ep0_recv_setup(ep0_urb)) {
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usberr("Invalid Setup Packet\n");
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udc_dump_buffer("ep0 setup read",
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(u8 *)data, 8);
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goto stall;
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}
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writel(UDCCSR0_IPR, UDCCSR0);
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ep0state = EP0_IDLE;
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} else {
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/* Check direction */
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if ((ep0_urb->device_request.bmRequestType &
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USB_REQ_DIRECTION_MASK)
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== USB_REQ_HOST2DEVICE) {
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ep0state = EP0_OUT_DATA;
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ep0_urb->buffer =
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(u8 *)ep0_urb->buffer_data;
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ep0_urb->buffer_length =
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sizeof(ep0_urb->buffer_data);
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ep0_urb->actual_length = 0;
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writel(UDCCSR0_IPR, UDCCSR0);
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} else {
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/* The ep0_recv_setup function has
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* already placed our response packet
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* data in ep0_urb->buffer and the
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* packet length in
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* ep0_urb->actual_length.
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*/
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if (ep0_recv_setup(ep0_urb)) {
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stall:
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usberr("Invalid setup packet");
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udc_dump_buffer("ep0 setup read"
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, (u8 *) data, 8);
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ep0state = EP0_IDLE;
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writel(UDCCSR0_SA |
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UDCCSR0_OPC | UDCCSR0_FST |
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UDCCS0_FTF, UDCCSR0);
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return;
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}
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endpoint->tx_urb = ep0_urb;
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endpoint->sent = 0;
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usbdbg("EP0_IN_DATA");
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ep0state = EP0_IN_DATA;
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if (udc_write_urb(endpoint) < 0)
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goto stall;
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}
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}
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return;
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} else if ((udccsr0 & (UDCCSR0_OPC | UDCCSR0_SA))
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== (UDCCSR0_OPC|UDCCSR0_SA)) {
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usberr("Setup Active but no data. Stalling ....\n");
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goto stall;
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} else {
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usbdbg("random early IRQs");
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/* Some random early IRQs:
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* - we acked FST
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* - IPR cleared
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* - OPC got set, without SA (likely status stage)
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*/
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writel(udccsr0 & (UDCCSR0_SA | UDCCSR0_OPC), UDCCSR0);
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}
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break;
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case EP0_OUT_DATA:
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if ((udccsr0 & UDCCSR0_OPC) && !(udccsr0 & UDCCSR0_SA)) {
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if (udc_read_urb_ep0()) {
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read_complete:
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ep0state = EP0_IDLE;
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if (ep0_recv_setup(ep0_urb)) {
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/* Not a setup packet, stall next
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* EP0 transaction
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*/
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udc_dump_buffer("ep0 setup read",
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(u8 *) data, 8);
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usberr("can't parse setup packet\n");
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goto stall;
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}
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}
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} else if (!(udccsr0 & UDCCSR0_OPC) &&
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!(udccsr0 & UDCCSR0_IPR)) {
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if (ep0_urb->device_request.wLength ==
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ep0_urb->actual_length)
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goto read_complete;
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usberr("Premature Status\n");
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ep0state = EP0_IDLE;
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}
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break;
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case EP0_IN_DATA:
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/* GET_DESCRIPTOR etc */
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if (udccsr0 & UDCCSR0_OPC) {
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writel(UDCCSR0_OPC | UDCCSR0_FTF, UDCCSR0);
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usberr("ep0in premature status");
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ep0state = EP0_IDLE;
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} else {
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/* irq was IPR clearing */
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if (udc_write_urb(endpoint) < 0) {
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usberr("ep0_write_error\n");
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goto stall;
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}
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}
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break;
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case EP0_XFER_COMPLETE:
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writel(UDCCSR0_IPR, UDCCSR0);
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ep0state = EP0_IDLE;
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break;
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default:
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usbdbg("Default\n");
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}
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writel(USIR0_IR0, USIR0);
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}
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static void udc_handle_ep(struct usb_endpoint_instance *endpoint)
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{
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int ep_addr = endpoint->endpoint_address;
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int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
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int ep_isout = (ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
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u32 flags = readl(UDCCSN(ep_num)) & (UDCCSR_SST | UDCCSR_TRN);
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if (flags)
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writel(flags, UDCCSN(ep_num));
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if (ep_isout)
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udc_read_urb(endpoint);
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else
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udc_write_urb(endpoint);
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writel(UDCCSR_PC, UDCCSN(ep_num));
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}
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static void udc_state_changed(void)
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{
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writel(readl(UDCCR) | UDCCR_SMAC, UDCCR);
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usbdbg("New UDC settings are: conf %d - inter %d - alter %d",
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(readl(UDCCR) & UDCCR_ACN) >> UDCCR_ACN_S,
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(readl(UDCCR) & UDCCR_AIN) >> UDCCR_AIN_S,
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(readl(UDCCR) & UDCCR_AAISN) >> UDCCR_AAISN_S);
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usbd_device_event_irq(udc_device, DEVICE_CONFIGURED, 0);
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writel(UDCISR1_IRCC, UDCISR1);
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}
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void udc_irq(void)
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{
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int handled;
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struct usb_endpoint_instance *endpoint;
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int ep_num, i;
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u32 udcisr0;
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do {
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handled = 0;
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/* Suspend Interrupt Request */
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if (readl(USIR1) & UDCCR_SUSIR) {
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usbdbg("Suspend\n");
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udc_ack_int_UDCCR(UDCCR_SUSIR);
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handled = 1;
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ep0state = EP0_IDLE;
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}
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/* Resume Interrupt Request */
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if (readl(USIR1) & UDCCR_RESIR) {
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udc_ack_int_UDCCR(UDCCR_RESIR);
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handled = 1;
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usbdbg("USB resume\n");
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}
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if (readl(USIR1) & (1<<31)) {
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handled = 1;
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udc_state_changed();
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}
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/* Reset Interrupt Request */
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if (readl(USIR1) & UDCCR_RSTIR) {
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udc_ack_int_UDCCR(UDCCR_RSTIR);
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handled = 1;
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usbdbg("Reset\n");
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usbd_device_event_irq(udc_device, DEVICE_RESET, 0);
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} else {
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if (readl(USIR0))
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usbdbg("UISR0: %x \n", readl(USIR0));
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if (readl(USIR0) & 0x2)
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writel(0x2, USIR0);
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/* Control traffic */
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if (readl(USIR0) & USIR0_IR0) {
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handled = 1;
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writel(USIR0_IR0, USIR0);
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udc_handle_ep0(udc_device->bus->endpoint_array);
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}
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endpoint = udc_device->bus->endpoint_array;
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for (i = 0; i < udc_device->bus->max_endpoints; i++) {
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ep_num = (endpoint[i].endpoint_address) &
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USB_ENDPOINT_NUMBER_MASK;
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if (!ep_num)
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continue;
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udcisr0 = readl(UDCISR0);
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if (udcisr0 &
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UDCISR_INT(ep_num, UDC_INT_PACKETCMP)) {
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writel(UDCISR_INT(ep_num, UDC_INT_PACKETCMP),
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UDCISR0);
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udc_handle_ep(&endpoint[i]);
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}
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}
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}
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} while (handled);
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}
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/* The UDCCR reg contains mask and interrupt status bits,
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* so using '|=' isn't safe as it may ack an interrupt.
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*/
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#define UDCCR_OEN (1 << 31) /* On-the-Go Enable */
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#define UDCCR_MASK_BITS (UDCCR_OEN | UDCCR_UDE)
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|
|
static inline void udc_set_mask_UDCCR(int mask)
|
|
{
|
|
writel((readl(UDCCR) & UDCCR_MASK_BITS) | (mask & UDCCR_MASK_BITS), UDCCR);
|
|
}
|
|
|
|
static inline void udc_clear_mask_UDCCR(int mask)
|
|
{
|
|
writel((readl(UDCCR) & UDCCR_MASK_BITS) & ~(mask & UDCCR_MASK_BITS), UDCCR);
|
|
}
|
|
|
|
static void pio_irq_enable(int ep_num)
|
|
{
|
|
if (ep_num < 16)
|
|
writel(readl(UDCICR0) | 3 << (ep_num * 2), UDCICR0);
|
|
else {
|
|
ep_num -= 16;
|
|
writel(readl(UDCICR1) | 3 << (ep_num * 2), UDCICR1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* udc_set_nak
|
|
*
|
|
* Allow upper layers to signal lower layers should not accept more RX data
|
|
*/
|
|
void udc_set_nak(int ep_num)
|
|
{
|
|
/* TODO */
|
|
}
|
|
|
|
/*
|
|
* udc_unset_nak
|
|
*
|
|
* Suspend sending of NAK tokens for DATA OUT tokens on a given endpoint.
|
|
* Switch off NAKing on this endpoint to accept more data output from host.
|
|
*/
|
|
void udc_unset_nak(int ep_num)
|
|
{
|
|
/* TODO */
|
|
}
|
|
|
|
int udc_endpoint_write(struct usb_endpoint_instance *endpoint)
|
|
{
|
|
return udc_write_urb(endpoint);
|
|
}
|
|
|
|
/* Associate a physical endpoint with endpoint instance */
|
|
void udc_setup_ep(struct usb_device_instance *device, unsigned int id,
|
|
struct usb_endpoint_instance *endpoint)
|
|
{
|
|
int ep_num, ep_addr, ep_isout, ep_type, ep_size;
|
|
int config, interface, alternate;
|
|
u32 tmp;
|
|
|
|
usbdbg("setting up endpoint id %d", id);
|
|
|
|
if (!endpoint) {
|
|
usberr("endpoint void!");
|
|
return;
|
|
}
|
|
|
|
ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK;
|
|
if (ep_num >= UDC_MAX_ENDPOINTS) {
|
|
usberr("unable to setup ep %d!", ep_num);
|
|
return;
|
|
}
|
|
|
|
pio_irq_enable(ep_num);
|
|
if (ep_num == 0) {
|
|
/* Done for ep0 */
|
|
return;
|
|
}
|
|
|
|
config = 1;
|
|
interface = 0;
|
|
alternate = 0;
|
|
|
|
usbdbg("config %d - interface %d - alternate %d",
|
|
config, interface, alternate);
|
|
|
|
ep_addr = endpoint->endpoint_address;
|
|
ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK;
|
|
ep_isout = (ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
|
|
ep_type = ep_isout ? endpoint->rcv_attributes : endpoint->tx_attributes;
|
|
ep_size = ep_isout ? endpoint->rcv_packetSize : endpoint->tx_packetSize;
|
|
|
|
usbdbg("addr %x, num %d, dir %s, type %s, packet size %d",
|
|
ep_addr, ep_num,
|
|
ep_isout ? "out" : "in",
|
|
ep_type == USB_ENDPOINT_XFER_ISOC ? "isoc" :
|
|
ep_type == USB_ENDPOINT_XFER_BULK ? "bulk" :
|
|
ep_type == USB_ENDPOINT_XFER_INT ? "int" : "???",
|
|
ep_size
|
|
);
|
|
|
|
/* Configure UDCCRx */
|
|
tmp = 0;
|
|
tmp |= (config << UDCCONR_CN_S) & UDCCONR_CN;
|
|
tmp |= (interface << UDCCONR_IN_S) & UDCCONR_IN;
|
|
tmp |= (alternate << UDCCONR_AISN_S) & UDCCONR_AISN;
|
|
tmp |= (ep_num << UDCCONR_EN_S) & UDCCONR_EN;
|
|
tmp |= (ep_type << UDCCONR_ET_S) & UDCCONR_ET;
|
|
tmp |= ep_isout ? 0 : UDCCONR_ED;
|
|
tmp |= (ep_size << UDCCONR_MPS_S) & UDCCONR_MPS;
|
|
tmp |= UDCCONR_EE;
|
|
|
|
writel(tmp, UDCCN(ep_num));
|
|
|
|
usbdbg("UDCCR%c = %x", 'A' + ep_num-1, readl(UDCCN(ep_num)));
|
|
usbdbg("UDCCSR%c = %x", 'A' + ep_num-1, readl(UDCCSN(ep_num)));
|
|
}
|
|
|
|
/* Connect the USB device to the bus */
|
|
void udc_connect(void)
|
|
{
|
|
usbdbg("UDC connect");
|
|
|
|
#ifdef CONFIG_USB_DEV_PULLUP_GPIO
|
|
/* Turn on the USB connection by enabling the pullup resistor */
|
|
writel(readl(GPDR(CONFIG_USB_DEV_PULLUP_GPIO))
|
|
| GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO),
|
|
GPDR(CONFIG_USB_DEV_PULLUP_GPIO));
|
|
writel(GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO), GPSR(CONFIG_USB_DEV_PULLUP_GPIO));
|
|
#else
|
|
/* Host port 2 transceiver D+ pull up enable */
|
|
writel(readl(UP2OCR) | UP2OCR_DPPUE, UP2OCR);
|
|
#endif
|
|
}
|
|
|
|
/* Disconnect the USB device to the bus */
|
|
void udc_disconnect(void)
|
|
{
|
|
usbdbg("UDC disconnect");
|
|
|
|
#ifdef CONFIG_USB_DEV_PULLUP_GPIO
|
|
/* Turn off the USB connection by disabling the pullup resistor */
|
|
writel(GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO), GPCR(CONFIG_USB_DEV_PULLUP_GPIO));
|
|
#else
|
|
/* Host port 2 transceiver D+ pull up disable */
|
|
writel(readl(UP2OCR) & ~UP2OCR_DPPUE, UP2OCR);
|
|
#endif
|
|
}
|
|
|
|
/* Switch on the UDC */
|
|
void udc_enable(struct usb_device_instance *device)
|
|
{
|
|
|
|
ep0state = EP0_IDLE;
|
|
|
|
/* enable endpoint 0, A, B's Packet Complete Interrupt. */
|
|
writel(0xffffffff, UDCICR0);
|
|
writel(0xa8000000, UDCICR1);
|
|
|
|
/* clear the interrupt status/control registers */
|
|
writel(0xffffffff, UDCISR0);
|
|
writel(0xffffffff, UDCISR1);
|
|
|
|
/* set UDC-enable */
|
|
udc_set_mask_UDCCR(UDCCR_UDE);
|
|
|
|
udc_device = device;
|
|
if (!ep0_urb)
|
|
ep0_urb = usbd_alloc_urb(udc_device,
|
|
udc_device->bus->endpoint_array);
|
|
else
|
|
usbinfo("ep0_urb %p already allocated", ep0_urb);
|
|
|
|
usbdbg("UDC Enabled\n");
|
|
}
|
|
|
|
/* Need to check this again */
|
|
void udc_disable(void)
|
|
{
|
|
usbdbg("disable UDC");
|
|
|
|
udc_clear_mask_UDCCR(UDCCR_UDE);
|
|
|
|
/* Disable clock for USB device */
|
|
writel(readl(CKEN) & ~CKEN11_USB, CKEN);
|
|
|
|
/* Free ep0 URB */
|
|
if (ep0_urb) {
|
|
usbd_dealloc_urb(ep0_urb);
|
|
ep0_urb = NULL;
|
|
}
|
|
|
|
/* Reset device pointer */
|
|
udc_device = NULL;
|
|
}
|
|
|
|
/* Allow udc code to do any additional startup */
|
|
void udc_startup_events(struct usb_device_instance *device)
|
|
{
|
|
/* The DEVICE_INIT event puts the USB device in the state STATE_INIT */
|
|
usbd_device_event_irq(device, DEVICE_INIT, 0);
|
|
|
|
/* The DEVICE_CREATE event puts the USB device in the state
|
|
* STATE_ATTACHED */
|
|
usbd_device_event_irq(device, DEVICE_CREATE, 0);
|
|
|
|
/* Some USB controller driver implementations signal
|
|
* DEVICE_HUB_CONFIGURED and DEVICE_RESET events here.
|
|
* DEVICE_HUB_CONFIGURED causes a transition to the state
|
|
* STATE_POWERED, and DEVICE_RESET causes a transition to
|
|
* the state STATE_DEFAULT.
|
|
*/
|
|
udc_enable(device);
|
|
}
|
|
|
|
/* Initialize h/w stuff */
|
|
int udc_init(void)
|
|
{
|
|
udc_device = NULL;
|
|
usbdbg("PXA27x usbd start");
|
|
|
|
/* Enable clock for USB device */
|
|
writel(readl(CKEN) | CKEN11_USB, CKEN);
|
|
|
|
/* Disable the UDC */
|
|
udc_clear_mask_UDCCR(UDCCR_UDE);
|
|
|
|
/* Disable IRQs: we don't use them */
|
|
writel(0, UDCICR0);
|
|
writel(0, UDCICR1);
|
|
|
|
return 0;
|
|
}
|