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Diffstat (limited to 'drivers/media/video/vivi.c')
-rw-r--r--drivers/media/video/vivi.c495
1 files changed, 296 insertions, 199 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 81d5aa5cf33..fbfefae7886 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -28,17 +28,14 @@
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <linux/dma-mapping.h>
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-/* Include V4L1 specific functions. Should be removed soon */
-#include <linux/videodev.h>
-#endif
#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>
+#include <media/videobuf-vmalloc.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include "font.h"
#define VIVI_MODULE_NAME "vivi"
@@ -47,18 +44,32 @@
#define WAKE_DENOMINATOR 1001
#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
-#include "font.h"
-
#define VIVI_MAJOR_VERSION 0
-#define VIVI_MINOR_VERSION 5
+#define VIVI_MINOR_VERSION 6
#define VIVI_RELEASE 0
#define VIVI_VERSION \
KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE)
-/* Declare static vars that will be used as parameters */
-static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
-static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
-static int n_devs = 1; /* Number of virtual devices */
+MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
+MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static unsigned video_nr = -1;
+module_param(video_nr, uint, 0644);
+MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
+
+static unsigned n_devs = 1;
+module_param(n_devs, uint, 0644);
+MODULE_PARM_DESC(n_devs, "number of video devices to create");
+
+static unsigned debug;
+module_param(debug, uint, 0644);
+MODULE_PARM_DESC(debug, "activates debug info");
+
+static unsigned int vid_limit = 16;
+module_param(vid_limit, uint, 0644);
+MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
+
/* supported controls */
static struct v4l2_queryctrl vivi_qctrl[] = {
@@ -69,7 +80,7 @@ static struct v4l2_queryctrl vivi_qctrl[] = {
.maximum = 65535,
.step = 65535/100,
.default_value = 65535,
- .flags = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
.type = V4L2_CTRL_TYPE_INTEGER,
}, {
.id = V4L2_CID_BRIGHTNESS,
@@ -79,7 +90,7 @@ static struct v4l2_queryctrl vivi_qctrl[] = {
.maximum = 255,
.step = 1,
.default_value = 127,
- .flags = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -88,7 +99,7 @@ static struct v4l2_queryctrl vivi_qctrl[] = {
.maximum = 255,
.step = 0x1,
.default_value = 0x10,
- .flags = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -97,7 +108,7 @@ static struct v4l2_queryctrl vivi_qctrl[] = {
.maximum = 255,
.step = 0x1,
.default_value = 127,
- .flags = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.id = V4L2_CID_HUE,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -106,17 +117,12 @@ static struct v4l2_queryctrl vivi_qctrl[] = {
.maximum = 127,
.step = 0x1,
.default_value = 0,
- .flags = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
}
};
-static int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
-
-#define dprintk(dev, level, fmt, arg...) \
- do { \
- if (dev->vfd->debug >= (level)) \
- printk(KERN_DEBUG "vivi: " fmt , ## arg); \
- } while (0)
+#define dprintk(dev, level, fmt, arg...) \
+ v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg)
/* ------------------------------------------------------------------
Basic structures
@@ -206,6 +212,7 @@ static LIST_HEAD(vivi_devlist);
struct vivi_dev {
struct list_head vivi_devlist;
+ struct v4l2_device v4l2_dev;
spinlock_t slock;
struct mutex mutex;
@@ -223,6 +230,12 @@ struct vivi_dev {
char timestr[13];
int mv_count; /* Controls bars movement */
+
+ /* Input Number */
+ int input;
+
+ /* Control 'registers' */
+ int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
};
struct vivi_fh {
@@ -235,6 +248,7 @@ struct vivi_fh {
enum v4l2_buf_type type;
unsigned char bars[8][3];
+ int input; /* Input Number on bars */
};
/* ------------------------------------------------------------------
@@ -254,18 +268,72 @@ enum colors {
BLACK,
};
-static u8 bars[8][3] = {
/* R G B */
- {204, 204, 204}, /* white */
- {208, 208, 0}, /* ambar */
- { 0, 206, 206}, /* cyan */
- { 0, 239, 0}, /* green */
- {239, 0, 239}, /* magenta */
- {205, 0, 0}, /* red */
- { 0, 0, 255}, /* blue */
- { 0, 0, 0}, /* black */
+#define COLOR_WHITE {204, 204, 204}
+#define COLOR_AMBAR {208, 208, 0}
+#define COLOR_CIAN { 0, 206, 206}
+#define COLOR_GREEN { 0, 239, 0}
+#define COLOR_MAGENTA {239, 0, 239}
+#define COLOR_RED {205, 0, 0}
+#define COLOR_BLUE { 0, 0, 255}
+#define COLOR_BLACK { 0, 0, 0}
+
+struct bar_std {
+ u8 bar[8][3];
};
+/* Maximum number of bars are 10 - otherwise, the input print code
+ should be modified */
+static struct bar_std bars[] = {
+ { /* Standard ITU-R color bar sequence */
+ {
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ COLOR_CIAN,
+ COLOR_GREEN,
+ COLOR_MAGENTA,
+ COLOR_RED,
+ COLOR_BLUE,
+ COLOR_BLACK,
+ }
+ }, {
+ {
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ }
+ }, {
+ {
+ COLOR_WHITE,
+ COLOR_CIAN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_CIAN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_CIAN,
+ }
+ }, {
+ {
+ COLOR_WHITE,
+ COLOR_GREEN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_GREEN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_GREEN,
+ }
+ },
+};
+
+#define NUM_INPUTS ARRAY_SIZE(bars)
+
#define TO_Y(r, g, b) \
(((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16)
/* RGB to V(Cr) Color transform */
@@ -275,9 +343,10 @@ static u8 bars[8][3] = {
#define TO_U(r, g, b) \
(((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
-#define TSTAMP_MIN_Y 24
-#define TSTAMP_MAX_Y TSTAMP_MIN_Y+15
-#define TSTAMP_MIN_X 64
+#define TSTAMP_MIN_Y 24
+#define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15)
+#define TSTAMP_INPUT_X 10
+#define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X)
static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos)
{
@@ -392,9 +461,29 @@ static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax,
pos += 4; /* only 16 bpp supported for now */
}
- /* Checks if it is possible to show timestamp */
+ /* Prints input entry number */
+
+ /* Checks if it is possible to input number */
if (TSTAMP_MAX_Y >= hmax)
goto end;
+
+ if (TSTAMP_INPUT_X + strlen(timestr) >= wmax)
+ goto end;
+
+ if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) {
+ chr = rom8x16_bits[fh->input * 16 + line - TSTAMP_MIN_Y];
+ pos = TSTAMP_INPUT_X;
+ for (i = 0; i < 7; i++) {
+ /* Draw white font on black background */
+ if (chr & 1 << (7 - i))
+ gen_twopix(fh, basep + pos, WHITE);
+ else
+ gen_twopix(fh, basep + pos, BLACK);
+ pos += 2;
+ }
+ }
+
+ /* Checks if it is possible to show timestamp */
if (TSTAMP_MIN_X + strlen(timestr) >= wmax)
goto end;
@@ -577,7 +666,7 @@ static int vivi_start_thread(struct vivi_fh *fh)
dma_q->kthread = kthread_run(vivi_thread, fh, "vivi");
if (IS_ERR(dma_q->kthread)) {
- printk(KERN_ERR "vivi: kernel_thread() failed\n");
+ v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
return PTR_ERR(dma_q->kthread);
}
/* Wakes thread */
@@ -720,8 +809,12 @@ static struct videobuf_queue_ops vivi_video_qops = {
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+
strcpy(cap->driver, "vivi");
strcpy(cap->card, "vivi");
+ strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
cap->version = VIVI_VERSION;
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING |
@@ -807,38 +900,19 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
return 0;
}
-/*FIXME: This seems to be generic enough to be at videodev2 */
-static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
+/* precalculate color bar values to speed up rendering */
+static void precalculate_bars(struct vivi_fh *fh)
{
- struct vivi_fh *fh = priv;
- struct videobuf_queue *q = &fh->vb_vidq;
+ struct vivi_dev *dev = fh->dev;
unsigned char r, g, b;
int k, is_yuv;
- int ret = vidioc_try_fmt_vid_cap(file, fh, f);
- if (ret < 0)
- return (ret);
-
- mutex_lock(&q->vb_lock);
-
- if (videobuf_queue_is_busy(&fh->vb_vidq)) {
- dprintk(fh->dev, 1, "%s queue busy\n", __func__);
- ret = -EBUSY;
- goto out;
- }
-
- fh->fmt = get_format(f);
- fh->width = f->fmt.pix.width;
- fh->height = f->fmt.pix.height;
- fh->vb_vidq.field = f->fmt.pix.field;
- fh->type = f->type;
+ fh->input = dev->input;
- /* precalculate color bar values to speed up rendering */
for (k = 0; k < 8; k++) {
- r = bars[k][0];
- g = bars[k][1];
- b = bars[k][2];
+ r = bars[fh->input].bar[k][0];
+ g = bars[fh->input].bar[k][1];
+ b = bars[fh->input].bar[k][2];
is_yuv = 0;
switch (fh->fmt->fourcc) {
@@ -871,11 +945,40 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
}
}
+}
+
+/*FIXME: This seems to be generic enough to be at videodev2 */
+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_vid_cap(file, fh, f);
+ if (ret < 0)
+ return ret;
+
+ mutex_lock(&q->vb_lock);
+
+ if (videobuf_queue_is_busy(&fh->vb_vidq)) {
+ dprintk(fh->dev, 1, "%s queue busy\n", __func__);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ fh->fmt = get_format(f);
+ fh->width = f->fmt.pix.width;
+ fh->height = f->fmt.pix.height;
+ fh->vb_vidq.field = f->fmt.pix.field;
+ fh->type = f->type;
+
+ precalculate_bars(fh);
+
ret = 0;
out:
mutex_unlock(&q->vb_lock);
- return (ret);
+ return ret;
}
static int vidioc_reqbufs(struct file *file, void *priv,
@@ -950,27 +1053,36 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *inp)
{
- if (inp->index != 0)
+ if (inp->index >= NUM_INPUTS)
return -EINVAL;
inp->type = V4L2_INPUT_TYPE_CAMERA;
inp->std = V4L2_STD_525_60;
- strcpy(inp->name, "Camera");
+ sprintf(inp->name, "Camera %u", inp->index);
return (0);
}
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
- *i = 0;
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+
+ *i = dev->input;
return (0);
}
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
- if (i > 0)
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+
+ if (i >= NUM_INPUTS)
return -EINVAL;
+ dev->input = i;
+ precalculate_bars(fh);
+
return (0);
}
@@ -993,12 +1105,14 @@ static int vidioc_queryctrl(struct file *file, void *priv,
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
int i;
for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
if (ctrl->id == vivi_qctrl[i].id) {
- ctrl->value = qctl_regs[i];
- return (0);
+ ctrl->value = dev->qctl_regs[i];
+ return 0;
}
return -EINVAL;
@@ -1006,16 +1120,18 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
int i;
for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
if (ctrl->id == vivi_qctrl[i].id) {
- if (ctrl->value < vivi_qctrl[i].minimum
- || ctrl->value > vivi_qctrl[i].maximum) {
- return (-ERANGE);
- }
- qctl_regs[i] = ctrl->value;
- return (0);
+ if (ctrl->value < vivi_qctrl[i].minimum ||
+ ctrl->value > vivi_qctrl[i].maximum) {
+ return -ERANGE;
+ }
+ dev->qctl_regs[i] = ctrl->value;
+ return 0;
}
return -EINVAL;
}
@@ -1026,32 +1142,20 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
static int vivi_open(struct file *file)
{
- int minor = video_devdata(file)->minor;
- struct vivi_dev *dev;
+ struct vivi_dev *dev = video_drvdata(file);
struct vivi_fh *fh = NULL;
- int i;
int retval = 0;
- printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor);
-
- lock_kernel();
- list_for_each_entry(dev, &vivi_devlist, vivi_devlist)
- if (dev->vfd->minor == minor)
- goto found;
- unlock_kernel();
- return -ENODEV;
-
-found:
mutex_lock(&dev->mutex);
dev->users++;
if (dev->users > 1) {
dev->users--;
- retval = -EBUSY;
- goto unlock;
+ mutex_unlock(&dev->mutex);
+ return -EBUSY;
}
- dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor,
+ dprintk(dev, 1, "open /dev/video%d type=%s users=%d\n", dev->vfd->num,
v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users);
/* allocate + initialize per filehandle data */
@@ -1059,14 +1163,11 @@ found:
if (NULL == fh) {
dev->users--;
retval = -ENOMEM;
- goto unlock;
}
-unlock:
mutex_unlock(&dev->mutex);
- if (retval) {
- unlock_kernel();
+
+ if (retval)
return retval;
- }
file->private_data = fh;
fh->dev = dev;
@@ -1076,10 +1177,6 @@ unlock:
fh->width = 640;
fh->height = 480;
- /* Put all controls at a sane state */
- for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
- qctl_regs[i] = vivi_qctrl[i].default_value;
-
/* Resets frame counters */
dev->h = 0;
dev->m = 0;
@@ -1095,7 +1192,6 @@ unlock:
sizeof(struct vivi_buffer), fh);
vivi_start_thread(fh);
- unlock_kernel();
return 0;
}
@@ -1151,32 +1247,6 @@ static int vivi_close(struct file *file)
return 0;
}
-static int vivi_release(void)
-{
- struct vivi_dev *dev;
- struct list_head *list;
-
- while (!list_empty(&vivi_devlist)) {
- list = vivi_devlist.next;
- list_del(list);
- dev = list_entry(list, struct vivi_dev, vivi_devlist);
-
- if (-1 != dev->vfd->minor) {
- printk(KERN_INFO "%s: unregistering /dev/video%d\n",
- VIVI_MODULE_NAME, dev->vfd->num);
- video_unregister_device(dev->vfd);
- } else {
- printk(KERN_INFO "%s: releasing /dev/video%d\n",
- VIVI_MODULE_NAME, dev->vfd->num);
- video_device_release(dev->vfd);
- }
-
- kfree(dev);
- }
-
- return 0;
-}
-
static int vivi_mmap(struct file *file, struct vm_area_struct *vma)
{
struct vivi_fh *fh = file->private_data;
@@ -1239,87 +1309,130 @@ static struct video_device vivi_template = {
.tvnorms = V4L2_STD_525_60,
.current_norm = V4L2_STD_NTSC_M,
};
+
/* -----------------------------------------------------------------
Initialization and module stuff
------------------------------------------------------------------*/
-/* This routine allocates from 1 to n_devs virtual drivers.
+static int vivi_release(void)
+{
+ struct vivi_dev *dev;
+ struct list_head *list;
- 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)
+ while (!list_empty(&vivi_devlist)) {
+ list = vivi_devlist.next;
+ list_del(list);
+ dev = list_entry(list, struct vivi_dev, vivi_devlist);
+
+ v4l2_info(&dev->v4l2_dev, "unregistering /dev/video%d\n",
+ dev->vfd->num);
+ video_unregister_device(dev->vfd);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ kfree(dev);
+ }
+
+ return 0;
+}
+
+static int __init vivi_create_instance(int inst)
{
- int ret = -ENOMEM, i;
struct vivi_dev *dev;
struct video_device *vfd;
+ int ret, i;
- if (n_devs <= 0)
- n_devs = 1;
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
- for (i = 0; i < n_devs; i++) {
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- break;
+ snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name),
+ "%s-%03d", VIVI_MODULE_NAME, inst);
+ ret = v4l2_device_register(NULL, &dev->v4l2_dev);
+ if (ret)
+ goto free_dev;
- /* init video dma queues */
- INIT_LIST_HEAD(&dev->vidq.active);
- init_waitqueue_head(&dev->vidq.wq);
+ /* init video dma queues */
+ INIT_LIST_HEAD(&dev->vidq.active);
+ init_waitqueue_head(&dev->vidq.wq);
- /* initialize locks */
- spin_lock_init(&dev->slock);
- mutex_init(&dev->mutex);
+ /* initialize locks */
+ spin_lock_init(&dev->slock);
+ mutex_init(&dev->mutex);
- vfd = video_device_alloc();
- if (!vfd) {
- kfree(dev);
- break;
- }
+ ret = -ENOMEM;
+ vfd = video_device_alloc();
+ if (!vfd)
+ goto unreg_dev;
- *vfd = vivi_template;
+ *vfd = vivi_template;
- ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
- if (ret < 0) {
- video_device_release(vfd);
- kfree(dev);
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
+ if (ret < 0)
+ goto rel_vdev;
- /* If some registers succeeded, keep driver */
- if (i)
- ret = 0;
+ video_set_drvdata(vfd, dev);
- break;
- }
+ /* Set all controls to their default value. */
+ for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
+ dev->qctl_regs[i] = vivi_qctrl[i].default_value;
+
+ /* 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->num);
+
+ if (video_nr >= 0)
+ video_nr++;
- /* Now that everything is fine, let's add it to device list */
- list_add_tail(&dev->vivi_devlist, &vivi_devlist);
+ dev->vfd = vfd;
+ v4l2_info(&dev->v4l2_dev, "V4L2 device registered as /dev/video%d\n",
+ vfd->num);
+ return 0;
+
+rel_vdev:
+ video_device_release(vfd);
+unreg_dev:
+ v4l2_device_unregister(&dev->v4l2_dev);
+free_dev:
+ kfree(dev);
+ return ret;
+}
+
+/* This routine allocates from 1 to n_devs virtual drivers.
- snprintf(vfd->name, sizeof(vfd->name), "%s (%i)",
- vivi_template.name, vfd->minor);
+ 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, which is equal to VIDEO_NUM_DEVICES.
+ */
+static int __init vivi_init(void)
+{
+ int ret = 0, i;
- if (video_nr >= 0)
- video_nr++;
+ if (n_devs <= 0)
+ n_devs = 1;
- dev->vfd = vfd;
- printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n",
- VIVI_MODULE_NAME, vfd->num);
+ for (i = 0; i < n_devs; i++) {
+ ret = vivi_create_instance(i);
+ if (ret) {
+ /* If some instantiations succeeded, keep driver */
+ if (i)
+ ret = 0;
+ break;
+ }
}
if (ret < 0) {
- vivi_release();
printk(KERN_INFO "Error %d while loading vivi driver\n", ret);
- } else {
- printk(KERN_INFO "Video Technology Magazine Virtual Video "
+ return ret;
+ }
+
+ printk(KERN_INFO "Video Technology Magazine Virtual Video "
"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;
- }
+ /* n_devs will reflect the actual number of allocated devices */
+ n_devs = i;
return ret;
}
@@ -1331,19 +1444,3 @@ static void __exit vivi_exit(void)
module_init(vivi_init);
module_exit(vivi_exit);
-
-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, uint, 0444);
-MODULE_PARM_DESC(video_nr, "video iminor start number");
-
-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);
-MODULE_PARM_DESC(debug, "activates debug info");
-
-module_param(vid_limit, int, 0644);
-MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 06:16:54 +0000