+++ /dev/null
-/*****************************************************************************/
-
-/*
- * dabusb.c -- dab usb driver.
- *
- * Copyright (C) 1999 Deti Fliegl (deti@fliegl.de)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- *
- * $Id: dabusb.c,v 1.54 2000/07/24 21:39:39 deti Exp $
- *
- */
-
-/*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/socket.h>
-#include <linux/list.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/atomic.h>
-#include <linux/delay.h>
-#include <linux/usb.h>
-#include <linux/mutex.h>
-#include <linux/firmware.h>
-#include <linux/ihex.h>
-
-#include "dabusb.h"
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v1.54"
-#define DRIVER_AUTHOR "Deti Fliegl, deti@fliegl.de"
-#define DRIVER_DESC "DAB-USB Interface Driver for Linux (c)1999"
-
-/* --------------------------------------------------------------------- */
-
-#ifdef CONFIG_USB_DYNAMIC_MINORS
-#define NRDABUSB 256
-#else
-#define NRDABUSB 4
-#endif
-
-/*-------------------------------------------------------------------*/
-
-static dabusb_t dabusb[NRDABUSB];
-static int buffers = 256;
-static struct usb_driver dabusb_driver;
-
-/*-------------------------------------------------------------------*/
-
-static int dabusb_add_buf_tail (pdabusb_t s, struct list_head *dst, struct list_head *src)
-{
- unsigned long flags;
- struct list_head *tmp;
- int ret = 0;
-
- spin_lock_irqsave (&s->lock, flags);
-
- if (list_empty (src)) {
- // no elements in source buffer
- ret = -1;
- goto err;
- }
- tmp = src->next;
- list_move_tail (tmp, dst);
-
- err: spin_unlock_irqrestore (&s->lock, flags);
- return ret;
-}
-/*-------------------------------------------------------------------*/
-#ifdef DEBUG
-static void dump_urb (struct urb *urb)
-{
- dbg("urb :%p", urb);
- dbg("dev :%p", urb->dev);
- dbg("pipe :%08X", urb->pipe);
- dbg("status :%d", urb->status);
- dbg("transfer_flags :%08X", urb->transfer_flags);
- dbg("transfer_buffer :%p", urb->transfer_buffer);
- dbg("transfer_buffer_length:%d", urb->transfer_buffer_length);
- dbg("actual_length :%d", urb->actual_length);
- dbg("setup_packet :%p", urb->setup_packet);
- dbg("start_frame :%d", urb->start_frame);
- dbg("number_of_packets :%d", urb->number_of_packets);
- dbg("interval :%d", urb->interval);
- dbg("error_count :%d", urb->error_count);
- dbg("context :%p", urb->context);
- dbg("complete :%p", urb->complete);
-}
-#endif
-/*-------------------------------------------------------------------*/
-static int dabusb_cancel_queue (pdabusb_t s, struct list_head *q)
-{
- unsigned long flags;
- pbuff_t b;
-
- dbg("dabusb_cancel_queue");
-
- spin_lock_irqsave (&s->lock, flags);
-
- list_for_each_entry(b, q, buff_list) {
-#ifdef DEBUG
- dump_urb(b->purb);
-#endif
- usb_unlink_urb (b->purb);
- }
- spin_unlock_irqrestore (&s->lock, flags);
- return 0;
-}
-/*-------------------------------------------------------------------*/
-static int dabusb_free_queue (struct list_head *q)
-{
- struct list_head *tmp;
- struct list_head *p;
- pbuff_t b;
-
- dbg("dabusb_free_queue");
- for (p = q->next; p != q;) {
- b = list_entry (p, buff_t, buff_list);
-
-#ifdef DEBUG
- dump_urb(b->purb);
-#endif
- kfree(b->purb->transfer_buffer);
- usb_free_urb(b->purb);
- tmp = p->next;
- list_del (p);
- kfree (b);
- p = tmp;
- }
-
- return 0;
-}
-/*-------------------------------------------------------------------*/
-static int dabusb_free_buffers (pdabusb_t s)
-{
- unsigned long flags;
- dbg("dabusb_free_buffers");
-
- spin_lock_irqsave(&s->lock, flags);
-
- dabusb_free_queue (&s->free_buff_list);
- dabusb_free_queue (&s->rec_buff_list);
-
- spin_unlock_irqrestore(&s->lock, flags);
-
- s->got_mem = 0;
- return 0;
-}
-/*-------------------------------------------------------------------*/
-static void dabusb_iso_complete (struct urb *purb)
-{
- pbuff_t b = purb->context;
- pdabusb_t s = b->s;
- int i;
- int len;
- int dst = 0;
- void *buf = purb->transfer_buffer;
-
- dbg("dabusb_iso_complete");
-
- // process if URB was not killed
- if (purb->status != -ENOENT) {
- unsigned int pipe = usb_rcvisocpipe (purb->dev, _DABUSB_ISOPIPE);
- int pipesize = usb_maxpacket (purb->dev, pipe, usb_pipeout (pipe));
- for (i = 0; i < purb->number_of_packets; i++)
- if (!purb->iso_frame_desc[i].status) {
- len = purb->iso_frame_desc[i].actual_length;
- if (len <= pipesize) {
- memcpy (buf + dst, buf + purb->iso_frame_desc[i].offset, len);
- dst += len;
- }
- else
- dev_err(&purb->dev->dev,
- "dabusb_iso_complete: invalid len %d\n", len);
- }
- else
- dev_warn(&purb->dev->dev, "dabusb_iso_complete: corrupted packet status: %d\n", purb->iso_frame_desc[i].status);
- if (dst != purb->actual_length)
- dev_err(&purb->dev->dev,
- "dst!=purb->actual_length:%d!=%d\n",
- dst, purb->actual_length);
- }
-
- if (atomic_dec_and_test (&s->pending_io) && !s->remove_pending && s->state != _stopped) {
- s->overruns++;
- dev_err(&purb->dev->dev, "overrun (%d)\n", s->overruns);
- }
- wake_up (&s->wait);
-}
-/*-------------------------------------------------------------------*/
-static int dabusb_alloc_buffers (pdabusb_t s)
-{
- int transfer_len = 0;
- pbuff_t b;
- unsigned int pipe = usb_rcvisocpipe (s->usbdev, _DABUSB_ISOPIPE);
- int pipesize = usb_maxpacket (s->usbdev, pipe, usb_pipeout (pipe));
- int packets = _ISOPIPESIZE / pipesize;
- int transfer_buffer_length = packets * pipesize;
- int i;
-
- dbg("dabusb_alloc_buffers pipesize:%d packets:%d transfer_buffer_len:%d",
- pipesize, packets, transfer_buffer_length);
-
- while (transfer_len < (s->total_buffer_size << 10)) {
- b = kzalloc(sizeof (buff_t), GFP_KERNEL);
- if (!b) {
- dev_err(&s->usbdev->dev,
- "kzalloc(sizeof(buff_t))==NULL\n");
- goto err;
- }
- b->s = s;
- b->purb = usb_alloc_urb(packets, GFP_KERNEL);
- if (!b->purb) {
- dev_err(&s->usbdev->dev, "usb_alloc_urb == NULL\n");
- kfree (b);
- goto err;
- }
-
- b->purb->transfer_buffer = kmalloc (transfer_buffer_length, GFP_KERNEL);
- if (!b->purb->transfer_buffer) {
- kfree (b->purb);
- kfree (b);
- dev_err(&s->usbdev->dev,
- "kmalloc(%d)==NULL\n", transfer_buffer_length);
- goto err;
- }
-
- b->purb->transfer_buffer_length = transfer_buffer_length;
- b->purb->number_of_packets = packets;
- b->purb->complete = dabusb_iso_complete;
- b->purb->context = b;
- b->purb->dev = s->usbdev;
- b->purb->pipe = pipe;
- b->purb->transfer_flags = URB_ISO_ASAP;
-
- for (i = 0; i < packets; i++) {
- b->purb->iso_frame_desc[i].offset = i * pipesize;
- b->purb->iso_frame_desc[i].length = pipesize;
- }
-
- transfer_len += transfer_buffer_length;
- list_add_tail (&b->buff_list, &s->free_buff_list);
- }
- s->got_mem = transfer_len;
-
- return 0;
-
- err:
- dabusb_free_buffers (s);
- return -ENOMEM;
-}
-/*-------------------------------------------------------------------*/
-static int dabusb_bulk (pdabusb_t s, pbulk_transfer_t pb)
-{
- int ret;
- unsigned int pipe;
- int actual_length;
-
- dbg("dabusb_bulk");
-
- if (!pb->pipe)
- pipe = usb_rcvbulkpipe (s->usbdev, 2);
- else
- pipe = usb_sndbulkpipe (s->usbdev, 2);
-
- ret=usb_bulk_msg(s->usbdev, pipe, pb->data, pb->size, &actual_length, 100);
- if(ret<0) {
- dev_err(&s->usbdev->dev,
- "usb_bulk_msg failed(%d)\n", ret);
-
- if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) {
- dev_err(&s->usbdev->dev, "set_interface failed\n");
- return -EINVAL;
- }
-
- }
-
- if( ret == -EPIPE ) {
- dev_warn(&s->usbdev->dev, "CLEAR_FEATURE request to remove STALL condition.\n");
- if(usb_clear_halt(s->usbdev, usb_pipeendpoint(pipe)))
- dev_err(&s->usbdev->dev, "request failed\n");
- }
-
- pb->size = actual_length;
- return ret;
-}
-/* --------------------------------------------------------------------- */
-static int dabusb_writemem (pdabusb_t s, int pos, const unsigned char *data,
- int len)
-{
- int ret;
- unsigned char *transfer_buffer = kmalloc (len, GFP_KERNEL);
-
- if (!transfer_buffer) {
- dev_err(&s->usbdev->dev,
- "dabusb_writemem: kmalloc(%d) failed.\n", len);
- return -ENOMEM;
- }
-
- memcpy (transfer_buffer, data, len);
-
- ret=usb_control_msg(s->usbdev, usb_sndctrlpipe( s->usbdev, 0 ), 0xa0, 0x40, pos, 0, transfer_buffer, len, 300);
-
- kfree (transfer_buffer);
- return ret;
-}
-/* --------------------------------------------------------------------- */
-static int dabusb_8051_reset (pdabusb_t s, unsigned char reset_bit)
-{
- dbg("dabusb_8051_reset: %d",reset_bit);
- return dabusb_writemem (s, CPUCS_REG, &reset_bit, 1);
-}
-/* --------------------------------------------------------------------- */
-static int dabusb_loadmem (pdabusb_t s, const char *fname)
-{
- int ret;
- const struct ihex_binrec *rec;
- const struct firmware *uninitialized_var(fw);
-
- dbg("Enter dabusb_loadmem (internal)");
-
- ret = request_ihex_firmware(&fw, "dabusb/firmware.fw", &s->usbdev->dev);
- if (ret) {
- dev_err(&s->usbdev->dev,
- "Failed to load \"dabusb/firmware.fw\": %d\n", ret);
- goto out;
- }
- ret = dabusb_8051_reset (s, 1);
-
- for (rec = (const struct ihex_binrec *)fw->data; rec;
- rec = ihex_next_binrec(rec)) {
- dbg("dabusb_writemem: %04X %p %d)", be32_to_cpu(rec->addr),
- rec->data, be16_to_cpu(rec->len));
-
- ret = dabusb_writemem(s, be32_to_cpu(rec->addr), rec->data,
- be16_to_cpu(rec->len));
- if (ret < 0) {
- dev_err(&s->usbdev->dev,
- "dabusb_writemem failed (%d %04X %p %d)\n",
- ret, be32_to_cpu(rec->addr),
- rec->data, be16_to_cpu(rec->len));
- break;
- }
- }
- ret = dabusb_8051_reset (s, 0);
- release_firmware(fw);
- out:
- dbg("dabusb_loadmem: exit");
-
- return ret;
-}
-/* --------------------------------------------------------------------- */
-static int dabusb_fpga_clear (pdabusb_t s, pbulk_transfer_t b)
-{
- b->size = 4;
- b->data[0] = 0x2a;
- b->data[1] = 0;
- b->data[2] = 0;
- b->data[3] = 0;
-
- dbg("dabusb_fpga_clear");
-
- return dabusb_bulk (s, b);
-}
-/* --------------------------------------------------------------------- */
-static int dabusb_fpga_init (pdabusb_t s, pbulk_transfer_t b)
-{
- b->size = 4;
- b->data[0] = 0x2c;
- b->data[1] = 0;
- b->data[2] = 0;
- b->data[3] = 0;
-
- dbg("dabusb_fpga_init");
-
- return dabusb_bulk (s, b);
-}
-/* --------------------------------------------------------------------- */
-static int dabusb_fpga_download (pdabusb_t s, const char *fname)
-{
- pbulk_transfer_t b = kmalloc (sizeof (bulk_transfer_t), GFP_KERNEL);
- const struct firmware *fw;
- unsigned int blen, n;
- int ret;
-
- dbg("Enter dabusb_fpga_download (internal)");
-
- if (!b) {
- dev_err(&s->usbdev->dev,
- "kmalloc(sizeof(bulk_transfer_t))==NULL\n");
- return -ENOMEM;
- }
-
- ret = request_firmware(&fw, "dabusb/bitstream.bin", &s->usbdev->dev);
- if (ret) {
- dev_err(&s->usbdev->dev,
- "Failed to load \"dabusb/bitstream.bin\": %d\n", ret);
- kfree(b);
- return ret;
- }
-
- b->pipe = 1;
- ret = dabusb_fpga_clear (s, b);
- mdelay (10);
- blen = fw->data[73] + (fw->data[72] << 8);
-
- dbg("Bitstream len: %i", blen);
-
- b->data[0] = 0x2b;
- b->data[1] = 0;
- b->data[2] = 0;
- b->data[3] = 60;
-
- for (n = 0; n <= blen + 60; n += 60) {
- // some cclks for startup
- b->size = 64;
- memcpy (b->data + 4, fw->data + 74 + n, 60);
- ret = dabusb_bulk (s, b);
- if (ret < 0) {
- dev_err(&s->usbdev->dev, "dabusb_bulk failed.\n");
- break;
- }
- mdelay (1);
- }
-
- ret = dabusb_fpga_init (s, b);
- kfree (b);
- release_firmware(fw);
-
- dbg("exit dabusb_fpga_download");
-
- return ret;
-}
-
-static int dabusb_stop (pdabusb_t s)
-{
- dbg("dabusb_stop");
-
- s->state = _stopped;
- dabusb_cancel_queue (s, &s->rec_buff_list);
-
- dbg("pending_io: %d", s->pending_io.counter);
-
- s->pending_io.counter = 0;
- return 0;
-}
-
-static int dabusb_startrek (pdabusb_t s)
-{
- if (!s->got_mem && s->state != _started) {
-
- dbg("dabusb_startrek");
-
- if (dabusb_alloc_buffers (s) < 0)
- return -ENOMEM;
- dabusb_stop (s);
- s->state = _started;
- s->readptr = 0;
- }
-
- if (!list_empty (&s->free_buff_list)) {
- pbuff_t end;
- int ret;
-
- while (!dabusb_add_buf_tail (s, &s->rec_buff_list, &s->free_buff_list)) {
-
- dbg("submitting: end:%p s->rec_buff_list:%p", s->rec_buff_list.prev, &s->rec_buff_list);
-
- end = list_entry (s->rec_buff_list.prev, buff_t, buff_list);
-
- ret = usb_submit_urb (end->purb, GFP_KERNEL);
- if (ret) {
- dev_err(&s->usbdev->dev,
- "usb_submit_urb returned:%d\n", ret);
- if (dabusb_add_buf_tail (s, &s->free_buff_list, &s->rec_buff_list))
- dev_err(&s->usbdev->dev,
- "startrek: dabusb_add_buf_tail failed\n");
- break;
- }
- else
- atomic_inc (&s->pending_io);
- }
- dbg("pending_io: %d",s->pending_io.counter);
- }
-
- return 0;
-}
-
-static ssize_t dabusb_read (struct file *file, char __user *buf, size_t count, loff_t * ppos)
-{
- pdabusb_t s = (pdabusb_t) file->private_data;
- unsigned long flags;
- unsigned ret = 0;
- int rem;
- int cnt;
- pbuff_t b;
- struct urb *purb = NULL;
-
- dbg("dabusb_read");
-
- if (*ppos)
- return -ESPIPE;
-
- if (s->remove_pending)
- return -EIO;
-
-
- if (!s->usbdev)
- return -EIO;
-
- while (count > 0) {
- dabusb_startrek (s);
-
- spin_lock_irqsave (&s->lock, flags);
-
- if (list_empty (&s->rec_buff_list)) {
-
- spin_unlock_irqrestore(&s->lock, flags);
-
- dev_err(&s->usbdev->dev,
- "error: rec_buf_list is empty\n");
- goto err;
- }
-
- b = list_entry (s->rec_buff_list.next, buff_t, buff_list);
- purb = b->purb;
-
- spin_unlock_irqrestore(&s->lock, flags);
-
- if (purb->status == -EINPROGRESS) {
- if (file->f_flags & O_NONBLOCK) // return nonblocking
- {
- if (!ret)
- ret = -EAGAIN;
- goto err;
- }
-
- interruptible_sleep_on (&s->wait);
-
- if (signal_pending (current)) {
- if (!ret)
- ret = -ERESTARTSYS;
- goto err;
- }
-
- spin_lock_irqsave (&s->lock, flags);
-
- if (list_empty (&s->rec_buff_list)) {
- spin_unlock_irqrestore(&s->lock, flags);
- dev_err(&s->usbdev->dev,
- "error: still no buffer available.\n");
- goto err;
- }
- spin_unlock_irqrestore(&s->lock, flags);
- s->readptr = 0;
- }
- if (s->remove_pending) {
- ret = -EIO;
- goto err;
- }
-
- rem = purb->actual_length - s->readptr; // set remaining bytes to copy
-
- if (count >= rem)
- cnt = rem;
- else
- cnt = count;
-
- dbg("copy_to_user:%p %p %d",buf, purb->transfer_buffer + s->readptr, cnt);
-
- if (copy_to_user (buf, purb->transfer_buffer + s->readptr, cnt)) {
- dev_err(&s->usbdev->dev, "read: copy_to_user failed\n");
- if (!ret)
- ret = -EFAULT;
- goto err;
- }
-
- s->readptr += cnt;
- count -= cnt;
- buf += cnt;
- ret += cnt;
-
- if (s->readptr == purb->actual_length) {
- // finished, take next buffer
- if (dabusb_add_buf_tail (s, &s->free_buff_list, &s->rec_buff_list))
- dev_err(&s->usbdev->dev,
- "read: dabusb_add_buf_tail failed\n");
- s->readptr = 0;
- }
- }
- err: //mutex_unlock(&s->mutex);
- return ret;
-}
-
-static int dabusb_open (struct inode *inode, struct file *file)
-{
- int devnum = iminor(inode);
- pdabusb_t s;
- int r;
-
- if (devnum < DABUSB_MINOR || devnum >= (DABUSB_MINOR + NRDABUSB))
- return -EIO;
-
- s = &dabusb[devnum - DABUSB_MINOR];
-
- dbg("dabusb_open");
- mutex_lock(&s->mutex);
-
- while (!s->usbdev || s->opened) {
- mutex_unlock(&s->mutex);
-
- if (file->f_flags & O_NONBLOCK)
- return -EBUSY;
- msleep_interruptible(500);
-
- if (signal_pending (current))
- return -EAGAIN;
- mutex_lock(&s->mutex);
- }
- if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) {
- mutex_unlock(&s->mutex);
- dev_err(&s->usbdev->dev, "set_interface failed\n");
- return -EINVAL;
- }
- s->opened = 1;
- mutex_unlock(&s->mutex);
-
- file->f_pos = 0;
- file->private_data = s;
-
- r = nonseekable_open(inode, file);
- return r;
-}
-
-static int dabusb_release (struct inode *inode, struct file *file)
-{
- pdabusb_t s = (pdabusb_t) file->private_data;
-
- dbg("dabusb_release");
-
- mutex_lock(&s->mutex);
- dabusb_stop (s);
- dabusb_free_buffers (s);
- mutex_unlock(&s->mutex);
-
- if (!s->remove_pending) {
- if (usb_set_interface (s->usbdev, _DABUSB_IF, 0) < 0)
- dev_err(&s->usbdev->dev, "set_interface failed\n");
- }
- else
- wake_up (&s->remove_ok);
-
- s->opened = 0;
- return 0;
-}
-
-static long dabusb_ioctl (struct file *file, unsigned int cmd, unsigned long arg)
-{
- pdabusb_t s = (pdabusb_t) file->private_data;
- pbulk_transfer_t pbulk;
- int ret = 0;
- int version = DABUSB_VERSION;
-
- dbg("dabusb_ioctl");
-
- if (s->remove_pending)
- return -EIO;
-
- mutex_lock(&s->mutex);
-
- if (!s->usbdev) {
- mutex_unlock(&s->mutex);
- return -EIO;
- }
-
- switch (cmd) {
-
- case IOCTL_DAB_BULK:
- pbulk = memdup_user((void __user *)arg,
- sizeof(bulk_transfer_t));
-
- if (IS_ERR(pbulk)) {
- ret = PTR_ERR(pbulk);
- break;
- }
-
- ret=dabusb_bulk (s, pbulk);
- if(ret==0)
- if (copy_to_user((void __user *)arg, pbulk,
- sizeof(bulk_transfer_t)))
- ret = -EFAULT;
- kfree (pbulk);
- break;
-
- case IOCTL_DAB_OVERRUNS:
- ret = put_user (s->overruns, (unsigned int __user *) arg);
- break;
-
- case IOCTL_DAB_VERSION:
- ret = put_user (version, (unsigned int __user *) arg);
- break;
-
- default:
- ret = -ENOIOCTLCMD;
- break;
- }
- mutex_unlock(&s->mutex);
- return ret;
-}
-
-static const struct file_operations dabusb_fops =
-{
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = dabusb_read,
- .unlocked_ioctl = dabusb_ioctl,
- .open = dabusb_open,
- .release = dabusb_release,
-};
-
-static char *dabusb_devnode(struct device *dev, mode_t *mode)
-{
- return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
-}
-
-static struct usb_class_driver dabusb_class = {
- .name = "dabusb%d",
- .devnode = dabusb_devnode,
- .fops = &dabusb_fops,
- .minor_base = DABUSB_MINOR,
-};
-
-
-/* --------------------------------------------------------------------- */
-static int dabusb_probe (struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct usb_device *usbdev = interface_to_usbdev(intf);
- int retval;
- pdabusb_t s;
-
- dbg("dabusb: probe: vendor id 0x%x, device id 0x%x ifnum:%d",
- le16_to_cpu(usbdev->descriptor.idVendor),
- le16_to_cpu(usbdev->descriptor.idProduct),
- intf->altsetting->desc.bInterfaceNumber);
-
- /* We don't handle multiple configurations */
- if (usbdev->descriptor.bNumConfigurations != 1)
- return -ENODEV;
-
- if (intf->altsetting->desc.bInterfaceNumber != _DABUSB_IF &&
- le16_to_cpu(usbdev->descriptor.idProduct) == 0x9999)
- return -ENODEV;
-
-
-
- s = &dabusb[intf->minor];
-
- mutex_lock(&s->mutex);
- s->remove_pending = 0;
- s->usbdev = usbdev;
- s->devnum = intf->minor;
-
- if (usb_reset_configuration (usbdev) < 0) {
- dev_err(&intf->dev, "reset_configuration failed\n");
- goto reject;
- }
- if (le16_to_cpu(usbdev->descriptor.idProduct) == 0x2131) {
- dabusb_loadmem (s, NULL);
- goto reject;
- }
- else {
- dabusb_fpga_download (s, NULL);
-
- if (usb_set_interface (s->usbdev, _DABUSB_IF, 0) < 0) {
- dev_err(&intf->dev, "set_interface failed\n");
- goto reject;
- }
- }
- dbg("bound to interface: %d", intf->altsetting->desc.bInterfaceNumber);
- usb_set_intfdata (intf, s);
- mutex_unlock(&s->mutex);
-
- retval = usb_register_dev(intf, &dabusb_class);
- if (retval) {
- usb_set_intfdata (intf, NULL);
- return -ENOMEM;
- }
-
- return 0;
-
- reject:
- mutex_unlock(&s->mutex);
- s->usbdev = NULL;
- return -ENODEV;
-}
-
-static void dabusb_disconnect (struct usb_interface *intf)
-{
- wait_queue_t __wait;
- pdabusb_t s = usb_get_intfdata (intf);
-
- dbg("dabusb_disconnect");
-
- init_waitqueue_entry(&__wait, current);
-
- usb_set_intfdata (intf, NULL);
- if (s) {
- usb_deregister_dev (intf, &dabusb_class);
- s->remove_pending = 1;
- wake_up (&s->wait);
- add_wait_queue(&s->remove_ok, &__wait);
- set_current_state(TASK_UNINTERRUPTIBLE);
- if (s->state == _started)
- schedule();
- current->state = TASK_RUNNING;
- remove_wait_queue(&s->remove_ok, &__wait);
-
- s->usbdev = NULL;
- s->overruns = 0;
- }
-}
-
-static struct usb_device_id dabusb_ids [] = {
- // { USB_DEVICE(0x0547, 0x2131) }, /* An2131 chip, no boot ROM */
- { USB_DEVICE(0x0547, 0x9999) },
- { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE (usb, dabusb_ids);
-
-static struct usb_driver dabusb_driver = {
- .name = "dabusb",
- .probe = dabusb_probe,
- .disconnect = dabusb_disconnect,
- .id_table = dabusb_ids,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int __init dabusb_init (void)
-{
- int retval;
- unsigned u;
-
- /* initialize struct */
- for (u = 0; u < NRDABUSB; u++) {
- pdabusb_t s = &dabusb[u];
- memset (s, 0, sizeof (dabusb_t));
- mutex_init (&s->mutex);
- s->usbdev = NULL;
- s->total_buffer_size = buffers;
- init_waitqueue_head (&s->wait);
- init_waitqueue_head (&s->remove_ok);
- spin_lock_init (&s->lock);
- INIT_LIST_HEAD (&s->free_buff_list);
- INIT_LIST_HEAD (&s->rec_buff_list);
- }
-
- /* register misc device */
- retval = usb_register(&dabusb_driver);
- if (retval)
- goto out;
-
- dbg("dabusb_init: driver registered");
-
- printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
- DRIVER_DESC "\n");
-
-out:
- return retval;
-}
-
-static void __exit dabusb_cleanup (void)
-{
- dbg("dabusb_cleanup");
-
- usb_deregister (&dabusb_driver);
-}
-
-/* --------------------------------------------------------------------- */
-
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
-MODULE_FIRMWARE("dabusb/firmware.fw");
-MODULE_FIRMWARE("dabusb/bitstream.bin");
-
-module_param(buffers, int, 0);
-MODULE_PARM_DESC (buffers, "Number of buffers (default=256)");
-
-module_init (dabusb_init);
-module_exit (dabusb_cleanup);
-
-/* --------------------------------------------------------------------- */
projects / firefly-linux-kernel-4.4.55.git / commitdiff