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Diffstat (limited to 'linux/drivers/media/video/gspca/gspca.c')
-rw-r--r--linux/drivers/media/video/gspca/gspca.c284
1 files changed, 201 insertions, 83 deletions
diff --git a/linux/drivers/media/video/gspca/gspca.c b/linux/drivers/media/video/gspca/gspca.c
index 729e0b4ed..8c98c7a05 100644
--- a/linux/drivers/media/video/gspca/gspca.c
+++ b/linux/drivers/media/video/gspca/gspca.c
@@ -47,11 +47,11 @@ MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("GSPCA USB Camera Driver");
MODULE_LICENSE("GPL");
-#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 2, 0)
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 3, 0)
static int video_nr = -1;
-#ifdef CONFIG_VIDEO_ADV_DEBUG
+#ifdef GSPCA_DEBUG
int gspca_debug = D_ERR | D_PROBE;
EXPORT_SYMBOL(gspca_debug);
@@ -118,7 +118,10 @@ static void fill_frame(struct gspca_dev *gspca_dev,
cam_pkt_op pkt_scan;
if (urb->status != 0) {
- PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
+#ifdef CONFIG_PM
+ if (!gspca_dev->frozen)
+#endif
+ PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
return; /* disconnection ? */
}
pkt_scan = gspca_dev->sd_desc->pkt_scan;
@@ -182,6 +185,46 @@ static void isoc_irq(struct urb *urb
}
/*
+ * bulk message interrupt from the USB device
+ */
+static void bulk_irq(struct urb *urb
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+ , struct pt_regs *regs
+#endif
+)
+{
+ struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
+ struct gspca_frame *frame;
+ int j;
+
+ PDEBUG(D_PACK, "bulk irq");
+ if (!gspca_dev->streaming)
+ return;
+ if (urb->status != 0 && urb->status != -ECONNRESET) {
+#ifdef CONFIG_PM
+ if (!gspca_dev->frozen)
+#endif
+ PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
+ return; /* disconnection ? */
+ }
+
+ /* check the availability of the frame buffer */
+ j = gspca_dev->fr_i;
+ j = gspca_dev->fr_queue[j];
+ frame = &gspca_dev->frame[j];
+ if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS)
+ != V4L2_BUF_FLAG_QUEUED) {
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ } else {
+ PDEBUG(D_PACK, "packet l:%d", urb->actual_length);
+ gspca_dev->sd_desc->pkt_scan(gspca_dev,
+ frame,
+ urb->transfer_buffer,
+ urb->actual_length);
+ }
+}
+
+/*
* add data to the current frame
*
* This function is called by the subdrivers at interrupt level.
@@ -378,10 +421,11 @@ static void destroy_urbs(struct gspca_dev *gspca_dev)
}
/*
- * search an input isochronous endpoint in an alternate setting
+ * search an input transfer endpoint in an alternate setting
*/
-static struct usb_host_endpoint *alt_isoc(struct usb_host_interface *alt,
- __u8 epaddr)
+static struct usb_host_endpoint *alt_xfer(struct usb_host_interface *alt,
+ __u8 epaddr,
+ __u8 xfer)
{
struct usb_host_endpoint *ep;
int i, attr;
@@ -392,7 +436,7 @@ static struct usb_host_endpoint *alt_isoc(struct usb_host_interface *alt,
if (ep->desc.bEndpointAddress == epaddr) {
attr = ep->desc.bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK;
- if (attr == USB_ENDPOINT_XFER_ISOC)
+ if (attr == xfer)
return ep;
break;
}
@@ -401,14 +445,14 @@ static struct usb_host_endpoint *alt_isoc(struct usb_host_interface *alt,
}
/*
- * search an input isochronous endpoint
+ * search an input (isoc or bulk) endpoint
*
* The endpoint is defined by the subdriver.
* Use only the first isoc (some Zoran - 0x0572:0x0001 - have two such ep).
* This routine may be called many times when the bandwidth is too small
* (the bandwidth is checked on urb submit).
*/
-static struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev)
+static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
{
struct usb_interface *intf;
struct usb_host_endpoint *ep;
@@ -418,15 +462,19 @@ static struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev)
ep = NULL;
i = gspca_dev->alt; /* previous alt setting */
while (--i > 0) { /* alt 0 is unusable */
- ep = alt_isoc(&intf->altsetting[i], gspca_dev->cam.epaddr);
+ ep = alt_xfer(&intf->altsetting[i],
+ gspca_dev->cam.epaddr,
+ gspca_dev->bulk
+ ? USB_ENDPOINT_XFER_BULK
+ : USB_ENDPOINT_XFER_ISOC);
if (ep)
break;
}
if (ep == NULL) {
- err("no ISOC endpoint found");
+ err("no transfer endpoint found");
return NULL;
}
- PDEBUG(D_STREAM, "use ISOC alt %d ep 0x%02x",
+ PDEBUG(D_STREAM, "use alt %d ep 0x%02x",
i, ep->desc.bEndpointAddress);
ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
if (ret < 0) {
@@ -438,7 +486,7 @@ static struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev)
}
/*
- * create the isochronous URBs
+ * create the URBs for image transfer
*/
static int create_urbs(struct gspca_dev *gspca_dev,
struct usb_host_endpoint *ep)
@@ -451,18 +499,28 @@ static int create_urbs(struct gspca_dev *gspca_dev,
/* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */
psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
- npkt = ISO_MAX_SIZE / psize;
- if (npkt > ISO_MAX_PKT)
- npkt = ISO_MAX_PKT;
- bsize = psize * npkt;
- PDEBUG(D_STREAM,
- "isoc %d pkts size %d (bsize:%d)", npkt, psize, bsize);
- nurbs = DEF_NURBS;
+ if (!gspca_dev->bulk) {
+ npkt = ISO_MAX_SIZE / psize;
+ if (npkt > ISO_MAX_PKT)
+ npkt = ISO_MAX_PKT;
+ bsize = psize * npkt;
+ PDEBUG(D_STREAM,
+ "isoc %d pkts size %d = bsize:%d",
+ npkt, psize, bsize);
+ nurbs = DEF_NURBS;
+ } else {
+ npkt = 0;
+ bsize = psize;
+ PDEBUG(D_STREAM, "bulk bsize:%d", bsize);
+ nurbs = 1;
+ }
+
gspca_dev->nurbs = nurbs;
for (n = 0; n < nurbs; n++) {
urb = usb_alloc_urb(npkt, GFP_KERNEL);
if (!urb) {
err("usb_alloc_urb failed");
+ destroy_urbs(gspca_dev);
return -ENOMEM;
}
urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev,
@@ -472,24 +530,30 @@ static int create_urbs(struct gspca_dev *gspca_dev,
if (urb->transfer_buffer == NULL) {
usb_free_urb(urb);
- destroy_urbs(gspca_dev);
err("usb_buffer_urb failed");
+ destroy_urbs(gspca_dev);
return -ENOMEM;
}
gspca_dev->urb[n] = urb;
urb->dev = gspca_dev->dev;
urb->context = gspca_dev;
- urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
- ep->desc.bEndpointAddress);
- urb->transfer_flags = URB_ISO_ASAP
- | URB_NO_TRANSFER_DMA_MAP;
- urb->interval = ep->desc.bInterval;
- urb->complete = isoc_irq;
- urb->number_of_packets = npkt;
urb->transfer_buffer_length = bsize;
- for (i = 0; i < npkt; i++) {
- urb->iso_frame_desc[i].length = psize;
- urb->iso_frame_desc[i].offset = psize * i;
+ if (npkt != 0) { /* ISOC */
+ urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
+ ep->desc.bEndpointAddress);
+ urb->transfer_flags = URB_ISO_ASAP
+ | URB_NO_TRANSFER_DMA_MAP;
+ urb->interval = ep->desc.bInterval;
+ urb->complete = isoc_irq;
+ urb->number_of_packets = npkt;
+ for (i = 0; i < npkt; i++) {
+ urb->iso_frame_desc[i].length = psize;
+ urb->iso_frame_desc[i].offset = psize * i;
+ }
+ } else { /* bulk */
+ urb->pipe = usb_rcvbulkpipe(gspca_dev->dev,
+ ep->desc.bEndpointAddress),
+ urb->complete = bulk_irq;
}
}
return 0;
@@ -511,7 +575,7 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
gspca_dev->alt = gspca_dev->nbalt;
for (;;) {
PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt);
- ep = get_isoc_ep(gspca_dev);
+ ep = get_ep(gspca_dev);
if (ep == NULL) {
ret = -EIO;
goto out;
@@ -525,6 +589,10 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
gspca_dev->streaming = 1;
atomic_set(&gspca_dev->nevent, 0);
+ /* start the bulk transfer is done by the subdriver */
+ if (gspca_dev->bulk)
+ break;
+
/* submit the URBs */
for (n = 0; n < gspca_dev->nurbs; n++) {
ret = usb_submit_urb(gspca_dev->urb[n], GFP_KERNEL);
@@ -562,10 +630,12 @@ static void gspca_stream_off(struct gspca_dev *gspca_dev)
gspca_dev->streaming = 0;
atomic_set(&gspca_dev->nevent, 0);
if (gspca_dev->present) {
- gspca_dev->sd_desc->stopN(gspca_dev);
+ if (gspca_dev->sd_desc->stopN)
+ gspca_dev->sd_desc->stopN(gspca_dev);
destroy_urbs(gspca_dev);
gspca_set_alt0(gspca_dev);
- gspca_dev->sd_desc->stop0(gspca_dev);
+ if (gspca_dev->sd_desc->stop0)
+ gspca_dev->sd_desc->stop0(gspca_dev);
PDEBUG(D_STREAM, "stream off OK");
}
}
@@ -684,7 +754,7 @@ static int try_fmt_vid_cap(struct gspca_dev *gspca_dev,
w = fmt->fmt.pix.width;
h = fmt->fmt.pix.height;
-#ifdef CONFIG_VIDEO_ADV_DEBUG
+#ifdef GSPCA_DEBUG
if (gspca_debug & D_CONF)
PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h);
#endif
@@ -774,31 +844,20 @@ static int dev_open(struct inode *inode, struct file *file)
goto out;
}
- /* if not done yet, initialize the sensor */
- if (gspca_dev->users == 0) {
- if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {
- ret = -ERESTARTSYS;
- goto out;
- }
- ret = gspca_dev->sd_desc->open(gspca_dev);
- mutex_unlock(&gspca_dev->usb_lock);
- if (ret != 0) {
- PDEBUG(D_ERR|D_CONF, "init device failed %d", ret);
- goto out;
- }
- } else if (gspca_dev->users > 4) { /* (arbitrary value) */
+ if (gspca_dev->users > 4) { /* (arbitrary value) */
ret = -EBUSY;
goto out;
}
gspca_dev->users++;
file->private_data = gspca_dev;
-#ifdef CONFIG_VIDEO_ADV_DEBUG
+#ifdef GSPCA_DEBUG
/* activate the v4l2 debug */
if (gspca_debug & D_V4L2)
gspca_dev->vdev.debug |= 3;
else
gspca_dev->vdev.debug &= ~3;
#endif
+ ret = 0;
out:
mutex_unlock(&gspca_dev->queue_lock);
if (ret != 0)
@@ -819,11 +878,11 @@ static int dev_close(struct inode *inode, struct file *file)
/* if the file did the capture, free the streaming resources */
if (gspca_dev->capt_file == file) {
- mutex_lock(&gspca_dev->usb_lock);
- if (gspca_dev->streaming)
+ if (gspca_dev->streaming) {
+ mutex_lock(&gspca_dev->usb_lock);
gspca_stream_off(gspca_dev);
- gspca_dev->sd_desc->close(gspca_dev);
- mutex_unlock(&gspca_dev->usb_lock);
+ mutex_unlock(&gspca_dev->usb_lock);
+ }
frame_free(gspca_dev);
gspca_dev->capt_file = NULL;
gspca_dev->memory = GSPCA_MEMORY_NO;
@@ -841,7 +900,16 @@ static int vidioc_querycap(struct file *file, void *priv,
memset(cap, 0, sizeof *cap);
strncpy(cap->driver, gspca_dev->sd_desc->name, sizeof cap->driver);
- strncpy(cap->card, gspca_dev->cam.dev_name, sizeof cap->card);
+/* strncpy(cap->card, gspca_dev->cam.dev_name, sizeof cap->card); */
+ if (gspca_dev->dev->product != NULL) {
+ strncpy(cap->card, gspca_dev->dev->product,
+ sizeof cap->card);
+ } else {
+ snprintf(cap->card, sizeof cap->card,
+ "USB Camera (%04x:%04x)",
+ le16_to_cpu(gspca_dev->dev->descriptor.idVendor),
+ le16_to_cpu(gspca_dev->dev->descriptor.idProduct));
+ }
strncpy(cap->bus_info, gspca_dev->dev->bus->bus_name,
sizeof cap->bus_info);
cap->version = DRIVER_VERSION_NUMBER;
@@ -851,42 +919,44 @@ static int vidioc_querycap(struct file *file, void *priv,
return 0;
}
-/* the use of V4L2_CTRL_FLAG_NEXT_CTRL asks for the controls to be sorted */
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *q_ctrl)
{
struct gspca_dev *gspca_dev = priv;
- int i;
+ int i, ix;
u32 id;
+ ix = -1;
id = q_ctrl->id;
if (id & V4L2_CTRL_FLAG_NEXT_CTRL) {
id &= V4L2_CTRL_ID_MASK;
id++;
for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
- if (id >= gspca_dev->sd_desc->ctrls[i].qctrl.id) {
- memcpy(q_ctrl,
- &gspca_dev->sd_desc->ctrls[i].qctrl,
- sizeof *q_ctrl);
- return 0;
+ if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
+ continue;
+ if (ix < 0) {
+ ix = i;
+ continue;
}
+ if (gspca_dev->sd_desc->ctrls[i].qctrl.id
+ > gspca_dev->sd_desc->ctrls[ix].qctrl.id)
+ continue;
+ ix = i;
}
- return -EINVAL;
}
for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
if (id == gspca_dev->sd_desc->ctrls[i].qctrl.id) {
- memcpy(q_ctrl,
- &gspca_dev->sd_desc->ctrls[i].qctrl,
- sizeof *q_ctrl);
- return 0;
+ ix = i;
+ break;
}
}
- if (id >= V4L2_CID_BASE
- && id <= V4L2_CID_LASTP1) {
+ if (ix < 0)
+ return -EINVAL;
+ memcpy(q_ctrl, &gspca_dev->sd_desc->ctrls[ix].qctrl,
+ sizeof *q_ctrl);
+ if (gspca_dev->ctrl_dis & (1 << ix))
q_ctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
- return 0;
- }
- return -EINVAL;
+ return 0;
}
static int vidioc_s_ctrl(struct file *file, void *priv,
@@ -901,8 +971,10 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
i++, ctrls++) {
if (ctrl->id != ctrls->qctrl.id)
continue;
+ if (gspca_dev->ctrl_dis & (1 << i))
+ return -EINVAL;
if (ctrl->value < ctrls->qctrl.minimum
- && ctrl->value > ctrls->qctrl.maximum)
+ || ctrl->value > ctrls->qctrl.maximum)
return -ERANGE;
PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value);
if (mutex_lock_interruptible(&gspca_dev->usb_lock))
@@ -927,6 +999,8 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
i++, ctrls++) {
if (ctrl->id != ctrls->qctrl.id)
continue;
+ if (gspca_dev->ctrl_dis & (1 << i))
+ return -EINVAL;
if (mutex_lock_interruptible(&gspca_dev->usb_lock))
return -ERESTARTSYS;
ret = ctrls->get(gspca_dev, &ctrl->value);
@@ -1078,7 +1152,7 @@ static int vidioc_streamon(struct file *file, void *priv,
if (ret < 0)
goto out;
}
-#ifdef CONFIG_VIDEO_ADV_DEBUG
+#ifdef GSPCA_DEBUG
if (gspca_debug & D_STREAM) {
PDEBUG_MODE("stream on OK",
gspca_dev->pixfmt,
@@ -1401,7 +1475,7 @@ static int vidioc_dqbuf(struct file *file, void *priv,
i = ret; /* frame index */
frame = &gspca_dev->frame[i];
if (gspca_dev->memory == V4L2_MEMORY_USERPTR) {
- if (copy_to_user((__u8 *) frame->v4l2_buf.m.userptr,
+ if (copy_to_user((__u8 __user *) frame->v4l2_buf.m.userptr,
frame->data,
frame->v4l2_buf.bytesused)) {
PDEBUG(D_ERR|D_STREAM,
@@ -1658,12 +1732,7 @@ static struct file_operations dev_fops = {
.poll = dev_poll,
};
-static struct video_device gspca_template = {
- .name = "gspca main driver",
- .type = VID_TYPE_CAPTURE,
- .fops = &dev_fops,
- .release = dev_release, /* mandatory */
- .minor = -1,
+static const struct v4l2_ioctl_ops dev_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_qbuf = vidioc_qbuf,
@@ -1692,6 +1761,14 @@ static struct video_device gspca_template = {
#endif
};
+static struct video_device gspca_template = {
+ .name = "gspca main driver",
+ .fops = &dev_fops,
+ .ioctl_ops = &dev_ioctl_ops,
+ .release = dev_release, /* mandatory */
+ .minor = -1,
+};
+
/*
* probe and create a new gspca device
*
@@ -1726,6 +1803,12 @@ int gspca_dev_probe(struct usb_interface *intf,
err("couldn't kzalloc gspca struct");
return -EIO;
}
+ gspca_dev->usb_buf = kmalloc(USB_BUF_SZ, GFP_KERNEL);
+ if (!gspca_dev->usb_buf) {
+ err("out of memory");
+ ret = -EIO;
+ goto out;
+ }
gspca_dev->dev = dev;
gspca_dev->iface = interface->bInterfaceNumber;
gspca_dev->nbalt = intf->num_altsetting;
@@ -1733,10 +1816,13 @@ int gspca_dev_probe(struct usb_interface *intf,
/* gspca_dev->users = 0; (done by kzalloc) */
gspca_dev->nbufread = 2;
- /* configure the subdriver */
+ /* configure the subdriver and initialize the USB device */
ret = gspca_dev->sd_desc->config(gspca_dev, id);
if (ret < 0)
goto out;
+ ret = gspca_dev->sd_desc->init(gspca_dev);
+ if (ret < 0)
+ goto out;
ret = gspca_set_alt0(gspca_dev);
if (ret < 0)
goto out;
@@ -1753,6 +1839,7 @@ int gspca_dev_probe(struct usb_interface *intf,
memcpy(&gspca_dev->fops, &dev_fops, sizeof gspca_dev->fops);
gspca_dev->vdev.fops = &gspca_dev->fops;
gspca_dev->fops.owner = module; /* module protection */
+ gspca_dev->present = 1;
ret = video_register_device(&gspca_dev->vdev,
VFL_TYPE_GRABBER,
video_nr);
@@ -1761,11 +1848,11 @@ int gspca_dev_probe(struct usb_interface *intf,
goto out;
}
- gspca_dev->present = 1;
usb_set_intfdata(intf, gspca_dev);
PDEBUG(D_PROBE, "probe ok");
return 0;
out:
+ kfree(gspca_dev->usb_buf);
kfree(gspca_dev);
return ret;
}
@@ -1798,11 +1885,42 @@ void gspca_disconnect(struct usb_interface *intf)
/* We don't want people trying to open up the device */
video_unregister_device(&gspca_dev->vdev);
/* Free the memory */
+ kfree(gspca_dev->usb_buf);
kfree(gspca_dev);
PDEBUG(D_PROBE, "disconnect complete");
}
EXPORT_SYMBOL(gspca_disconnect);
+#ifdef CONFIG_PM
+int gspca_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
+
+ if (!gspca_dev->streaming)
+ return 0;
+ gspca_dev->frozen = 1; /* avoid urb error messages */
+ if (gspca_dev->sd_desc->stopN)
+ gspca_dev->sd_desc->stopN(gspca_dev);
+ destroy_urbs(gspca_dev);
+ gspca_set_alt0(gspca_dev);
+ if (gspca_dev->sd_desc->stop0)
+ gspca_dev->sd_desc->stop0(gspca_dev);
+ return 0;
+}
+EXPORT_SYMBOL(gspca_suspend);
+
+int gspca_resume(struct usb_interface *intf)
+{
+ struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
+
+ gspca_dev->frozen = 0;
+ gspca_dev->sd_desc->init(gspca_dev);
+ if (gspca_dev->streaming)
+ return gspca_init_transfer(gspca_dev);
+ return 0;
+}
+EXPORT_SYMBOL(gspca_resume);
+#endif
/* -- cam driver utility functions -- */
/* auto gain and exposure algorithm based on the knee algorithm described here:
@@ -1908,7 +2026,7 @@ static void __exit gspca_exit(void)
module_init(gspca_init);
module_exit(gspca_exit);
-#ifdef CONFIG_VIDEO_ADV_DEBUG
+#ifdef GSPCA_DEBUG
module_param_named(debug, gspca_debug, int, 0644);
MODULE_PARM_DESC(debug,
"Debug (bit) 0x01:error 0x02:probe 0x04:config"
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-26 20:37:51 +0000