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Diffstat (limited to 'drivers/media/video/vivi.c')
-rw-r--r--drivers/media/video/vivi.c99
1 files changed, 71 insertions, 28 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 5ff9a58b613..8ba8daafd7e 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -35,10 +35,13 @@
#include <linux/interrupt.h>
#include <media/videobuf-vmalloc.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
#include <linux/kthread.h>
#include <linux/highmem.h>
#include <linux/freezer.h>
+#define VIVI_MODULE_NAME "vivi"
+
/* Wake up at about 30 fps */
#define WAKE_NUMERATOR 30
#define WAKE_DENOMINATOR 1001
@@ -47,7 +50,7 @@
#include "font.h"
#define VIVI_MAJOR_VERSION 0
-#define VIVI_MINOR_VERSION 4
+#define VIVI_MINOR_VERSION 5
#define VIVI_RELEASE 0
#define VIVI_VERSION \
KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE)
@@ -630,7 +633,7 @@ static int vidioc_querycap(struct file *file, void *priv,
return 0;
}
-static int vidioc_enum_fmt_cap(struct file *file, void *priv,
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->index > 0)
@@ -641,7 +644,7 @@ static int vidioc_enum_fmt_cap(struct file *file, void *priv,
return 0;
}
-static int vidioc_g_fmt_cap(struct file *file, void *priv,
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivi_fh *fh = priv;
@@ -658,7 +661,7 @@ static int vidioc_g_fmt_cap(struct file *file, void *priv,
return (0);
}
-static int vidioc_try_fmt_cap(struct file *file, void *priv,
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivi_fh *fh = priv;
@@ -706,13 +709,13 @@ static int vidioc_try_fmt_cap(struct file *file, void *priv,
}
/*FIXME: This seems to be generic enough to be at videodev2 */
-static int vidioc_s_fmt_cap(struct file *file, void *priv,
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivi_fh *fh = priv;
struct videobuf_queue *q = &fh->vb_vidq;
- int ret = vidioc_try_fmt_cap(file, fh, f);
+ int ret = vidioc_try_fmt_vid_cap(file, fh, f);
if (ret < 0)
return (ret);
@@ -1017,10 +1020,15 @@ static int vivi_release(void)
list_del(list);
dev = list_entry(list, struct vivi_dev, vivi_devlist);
- if (-1 != dev->vfd->minor)
+ if (-1 != dev->vfd->minor) {
+ printk(KERN_INFO "%s: unregistering /dev/video%d\n",
+ VIVI_MODULE_NAME, dev->vfd->minor);
video_unregister_device(dev->vfd);
- else
+ } else {
+ printk(KERN_INFO "%s: releasing /dev/video%d\n",
+ VIVI_MODULE_NAME, dev->vfd->minor);
video_device_release(dev->vfd);
+ }
kfree(dev);
}
@@ -1058,18 +1066,12 @@ static const struct file_operations vivi_fops = {
.llseek = no_llseek,
};
-static struct video_device vivi_template = {
- .name = "vivi",
- .type = VID_TYPE_CAPTURE,
- .fops = &vivi_fops,
- .minor = -1,
- .release = video_device_release,
-
+static const struct v4l2_ioctl_ops vivi_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
- .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
- .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
- .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
- .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
@@ -1086,6 +1088,15 @@ static struct video_device vivi_template = {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf,
#endif
+};
+
+static struct video_device vivi_template = {
+ .name = "vivi",
+ .fops = &vivi_fops,
+ .ioctl_ops = &vivi_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release,
+
.tvnorms = V4L2_STD_525_60,
.current_norm = V4L2_STD_NTSC_M,
};
@@ -1093,19 +1104,29 @@ static struct video_device vivi_template = {
Initialization and module stuff
------------------------------------------------------------------*/
+/* This routine allocates from 1 to n_devs virtual drivers.
+
+ The real maximum number of virtual drivers will depend on how many drivers
+ will succeed. This is limited to the maximum number of devices that
+ videodev supports. Since there are 64 minors for video grabbers, this is
+ currently the theoretical maximum limit. However, a further limit does
+ exist at videodev that forbids any driver to register more than 32 video
+ grabbers.
+ */
static int __init vivi_init(void)
{
int ret = -ENOMEM, i;
struct vivi_dev *dev;
struct video_device *vfd;
+ if (n_devs <= 0)
+ n_devs = 1;
+
for (i = 0; i < n_devs; i++) {
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (NULL == dev)
+ if (!dev)
break;
- list_add_tail(&dev->vivi_devlist, &vivi_devlist);
-
/* init video dma queues */
INIT_LIST_HEAD(&dev->vidq.active);
init_waitqueue_head(&dev->vidq.wq);
@@ -1115,14 +1136,27 @@ static int __init vivi_init(void)
mutex_init(&dev->mutex);
vfd = video_device_alloc();
- if (NULL == vfd)
+ if (!vfd) {
+ kfree(dev);
break;
+ }
*vfd = vivi_template;
ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
- if (ret < 0)
+ if (ret < 0) {
+ video_device_release(vfd);
+ kfree(dev);
+
+ /* If some registers succeeded, keep driver */
+ if (i)
+ ret = 0;
+
break;
+ }
+
+ /* Now that everything is fine, let's add it to device list */
+ list_add_tail(&dev->vivi_devlist, &vivi_devlist);
snprintf(vfd->name, sizeof(vfd->name), "%s (%i)",
vivi_template.name, vfd->minor);
@@ -1131,14 +1165,23 @@ static int __init vivi_init(void)
video_nr++;
dev->vfd = vfd;
+ printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n",
+ VIVI_MODULE_NAME, vfd->minor);
}
if (ret < 0) {
vivi_release();
printk(KERN_INFO "Error %d while loading vivi driver\n", ret);
- } else
+ } else {
printk(KERN_INFO "Video Technology Magazine Virtual Video "
- "Capture Board successfully loaded.\n");
+ "Capture Board ver %u.%u.%u successfully loaded.\n",
+ (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF,
+ VIVI_VERSION & 0xFF);
+
+ /* n_devs will reflect the actual number of allocated devices */
+ n_devs = i;
+ }
+
return ret;
}
@@ -1154,10 +1197,10 @@ MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
MODULE_LICENSE("Dual BSD/GPL");
-module_param(video_nr, int, 0);
+module_param(video_nr, uint, 0444);
MODULE_PARM_DESC(video_nr, "video iminor start number");
-module_param(n_devs, int, 0);
+module_param(n_devs, uint, 0444);
MODULE_PARM_DESC(n_devs, "number of video devices to create");
module_param_named(debug, vivi_template.debug, int, 0444);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 19:04:23 +0000