diff options
| -rwxr-xr-x[-rw-r--r--] | linux/Documentation/dvb/get_dvb_firmware | 0 | ||||
| -rwxr-xr-x[-rw-r--r--] | linux/Documentation/video4linux/extract_xc3028.pl | 0 | ||||
| -rw-r--r-- | linux/Documentation/video4linux/v4l2-framework.txt | 12 | ||||
| -rw-r--r-- | linux/drivers/media/video/v4l2-dev.c | 25 | ||||
| -rw-r--r-- | linux/drivers/media/video/v4l2-device.c | 47 | ||||
| -rw-r--r-- | linux/drivers/media/video/vivi.c | 305 | ||||
| -rw-r--r-- | linux/include/media/v4l2-device.h | 31 | ||||
| -rw-r--r-- | linux/include/media/v4l2-subdev.h | 4 |
8 files changed, 223 insertions, 201 deletions
diff --git a/linux/Documentation/dvb/get_dvb_firmware b/linux/Documentation/dvb/get_dvb_firmware index f2e908d7f..f2e908d7f 100644..100755 --- a/linux/Documentation/dvb/get_dvb_firmware +++ b/linux/Documentation/dvb/get_dvb_firmware diff --git a/linux/Documentation/video4linux/extract_xc3028.pl b/linux/Documentation/video4linux/extract_xc3028.pl index 2cb816047..2cb816047 100644..100755 --- a/linux/Documentation/video4linux/extract_xc3028.pl +++ b/linux/Documentation/video4linux/extract_xc3028.pl diff --git a/linux/Documentation/video4linux/v4l2-framework.txt b/linux/Documentation/video4linux/v4l2-framework.txt index 48cdf8624..accc376e9 100644 --- a/linux/Documentation/video4linux/v4l2-framework.txt +++ b/linux/Documentation/video4linux/v4l2-framework.txt @@ -84,12 +84,14 @@ You must register the device instance: v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev); Registration will initialize the v4l2_device struct and link dev->driver_data -to v4l2_dev. Registration will also set v4l2_dev->name to a value derived from -dev (driver name followed by the bus_id, to be precise). You may change the -name after registration if you want. +to v4l2_dev. If v4l2_dev->name is empty then it will be set to a value derived +from dev (driver name followed by the bus_id, to be precise). If you set it +up before calling v4l2_device_register then it will be untouched. If dev is +NULL, then you *must* setup v4l2_dev->name before calling v4l2_device_register. The first 'dev' argument is normally the struct device pointer of a pci_dev, -usb_device or platform_device. +usb_device or platform_device. It is rare for dev to be NULL, but it happens +with ISA devices, for example. You unregister with: @@ -266,7 +268,7 @@ errors (except -ENOIOCTLCMD) occured, then 0 is returned. The second argument to both calls is a group ID. If 0, then all subdevs are called. If non-zero, then only those whose group ID match that value will -be called. Before a bridge driver registers a subdev it can set subdev->grp_id +be called. Before a bridge driver registers a subdev it can set sd->grp_id to whatever value it wants (it's 0 by default). This value is owned by the bridge driver and the sub-device driver will never modify or use it. diff --git a/linux/drivers/media/video/v4l2-dev.c b/linux/drivers/media/video/v4l2-dev.c index 9e34e9ec2..e6dc1279a 100644 --- a/linux/drivers/media/video/v4l2-dev.c +++ b/linux/drivers/media/video/v4l2-dev.c @@ -326,37 +326,38 @@ static const struct file_operations v4l2_fops = { */ static int get_index(struct video_device *vdev, int num) { - u32 used = 0; - const int max_index = sizeof(used) * 8 - 1; + /* This can be static since this function is called with the global + videodev_lock held. */ + static DECLARE_BITMAP(used, VIDEO_NUM_DEVICES); int i; - /* Currently a single v4l driver instance cannot create more than - 32 devices. - Increase to u64 or an array of u32 if more are needed. */ - if (num > max_index) { + if (num >= VIDEO_NUM_DEVICES) { printk(KERN_ERR "videodev: %s num is too large\n", __func__); return -EINVAL; } - /* Some drivers do not set the parent. In that case always return 0. */ + /* Some drivers do not set the parent. In that case always return + num or 0. */ if (vdev->parent == NULL) - return 0; + return num >= 0 ? num : 0; + + bitmap_zero(used, VIDEO_NUM_DEVICES); for (i = 0; i < VIDEO_NUM_DEVICES; i++) { if (video_device[i] != NULL && video_device[i]->parent == vdev->parent) { - used |= 1 << video_device[i]->index; + set_bit(video_device[i]->index, used); } } if (num >= 0) { - if (used & (1 << num)) + if (test_bit(num, used)) return -ENFILE; return num; } - i = ffz(used); - return i > max_index ? -ENFILE : i; + i = find_first_zero_bit(used, VIDEO_NUM_DEVICES); + return i == VIDEO_NUM_DEVICES ? -ENFILE : i; } int video_register_device(struct video_device *vdev, int type, int nr) diff --git a/linux/drivers/media/video/v4l2-device.c b/linux/drivers/media/video/v4l2-device.c index e84925976..35e42e947 100644 --- a/linux/drivers/media/video/v4l2-device.c +++ b/linux/drivers/media/video/v4l2-device.c @@ -27,15 +27,24 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev) { - if (dev == NULL || v4l2_dev == NULL) + if (v4l2_dev == NULL) return -EINVAL; - /* Warn if we apparently re-register a device */ - WARN_ON(dev_get_drvdata(dev) != NULL); + INIT_LIST_HEAD(&v4l2_dev->subdevs); spin_lock_init(&v4l2_dev->lock); v4l2_dev->dev = dev; - snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s %s", + if (dev == NULL) { + /* If dev == NULL, then name must be filled in by the caller */ + WARN_ON(!v4l2_dev->name[0]); + return 0; + } + + /* Set name to driver name + device name if it is empty. */ + if (!v4l2_dev->name[0]) + snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s %s", dev->driver->name, dev_name(dev)); + if (dev_get_drvdata(dev)) + v4l2_warn(v4l2_dev, "Non-NULL drvdata on register\n"); dev_set_drvdata(dev, v4l2_dev); return 0; } @@ -45,10 +54,11 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev) { struct v4l2_subdev *sd, *next; - if (v4l2_dev == NULL || v4l2_dev->dev == NULL) + if (v4l2_dev == NULL) return; - dev_set_drvdata(v4l2_dev->dev, NULL); - /* unregister subdevs */ + if (v4l2_dev->dev) + dev_set_drvdata(v4l2_dev->dev, NULL); + /* Unregister subdevs */ list_for_each_entry_safe(sd, next, &v4l2_dev->subdevs, list) v4l2_device_unregister_subdev(sd); @@ -56,19 +66,20 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev) } EXPORT_SYMBOL_GPL(v4l2_device_unregister); -int v4l2_device_register_subdev(struct v4l2_device *dev, struct v4l2_subdev *sd) +int v4l2_device_register_subdev(struct v4l2_device *v4l2_dev, + struct v4l2_subdev *sd) { /* Check for valid input */ - if (dev == NULL || sd == NULL || !sd->name[0]) + if (v4l2_dev == NULL || sd == NULL || !sd->name[0]) return -EINVAL; /* Warn if we apparently re-register a subdev */ - WARN_ON(sd->dev != NULL); + WARN_ON(sd->v4l2_dev != NULL); if (!try_module_get(sd->owner)) return -ENODEV; - sd->dev = dev; - spin_lock(&dev->lock); - list_add_tail(&sd->list, &dev->subdevs); - spin_unlock(&dev->lock); + sd->v4l2_dev = v4l2_dev; + spin_lock(&v4l2_dev->lock); + list_add_tail(&sd->list, &v4l2_dev->subdevs); + spin_unlock(&v4l2_dev->lock); return 0; } EXPORT_SYMBOL_GPL(v4l2_device_register_subdev); @@ -76,12 +87,12 @@ EXPORT_SYMBOL_GPL(v4l2_device_register_subdev); void v4l2_device_unregister_subdev(struct v4l2_subdev *sd) { /* return if it isn't registered */ - if (sd == NULL || sd->dev == NULL) + if (sd == NULL || sd->v4l2_dev == NULL) return; - spin_lock(&sd->dev->lock); + spin_lock(&sd->v4l2_dev->lock); list_del(&sd->list); - spin_unlock(&sd->dev->lock); - sd->dev = NULL; + spin_unlock(&sd->v4l2_dev->lock); + sd->v4l2_dev = NULL; module_put(sd->owner); } EXPORT_SYMBOL_GPL(v4l2_device_unregister_subdev); diff --git a/linux/drivers/media/video/vivi.c b/linux/drivers/media/video/vivi.c index 603274874..76f7dfc32 100644 --- a/linux/drivers/media/video/vivi.c +++ b/linux/drivers/media/video/vivi.c @@ -34,14 +34,15 @@ #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> #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20) #include <linux/freezer.h> #endif +#include <media/videobuf-vmalloc.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include "font.h" #define VIVI_MODULE_NAME "vivi" @@ -50,18 +51,32 @@ #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[] = { @@ -72,7 +87,7 @@ 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, @@ -82,7 +97,7 @@ 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, @@ -91,7 +106,7 @@ 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, @@ -100,7 +115,7 @@ 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, @@ -109,17 +124,12 @@ 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 @@ -209,6 +219,7 @@ static LIST_HEAD(vivi_devlist); struct vivi_dev { struct list_head vivi_devlist; + struct v4l2_device v4l2_dev; spinlock_t slock; struct mutex mutex; @@ -229,6 +240,9 @@ struct vivi_dev { /* Input Number */ int input; + + /* Control 'registers' */ + int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; }; struct vivi_fh { @@ -659,7 +673,7 @@ 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 */ @@ -802,8 +816,12 @@ 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 | @@ -1094,12 +1112,14 @@ 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; @@ -1107,16 +1127,18 @@ 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; } @@ -1127,32 +1149,20 @@ 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 */ @@ -1160,14 +1170,11 @@ 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; @@ -1177,10 +1184,6 @@ 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; @@ -1196,7 +1199,6 @@ unlock: sizeof(struct vivi_buffer), fh); vivi_start_thread(fh); - unlock_kernel(); return 0; } @@ -1252,32 +1254,6 @@ 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; @@ -1340,87 +1316,130 @@ 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); + /* 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); + snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", + vivi_template.name, vfd->num); - if (video_nr >= 0) - video_nr++; + if (video_nr >= 0) + video_nr++; - dev->vfd = vfd; - printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n", - VIVI_MODULE_NAME, vfd->num); + 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. + + 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, i; + + if (n_devs <= 0) + n_devs = 1; + + 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; } @@ -1432,19 +1451,3 @@ 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"); diff --git a/linux/include/media/v4l2-device.h b/linux/include/media/v4l2-device.h index 55e41afd9..5d7146dc2 100644 --- a/linux/include/media/v4l2-device.h +++ b/linux/include/media/v4l2-device.h @@ -33,7 +33,9 @@ #define V4L2_DEVICE_NAME_SIZE (BUS_ID_SIZE + 16) struct v4l2_device { - /* dev->driver_data points to this struct */ + /* dev->driver_data points to this struct. + Note: dev might be NULL if there is no parent device + as is the case with e.g. ISA devices. */ struct device *dev; /* used to keep track of the registered subdevs */ struct list_head subdevs; @@ -44,7 +46,9 @@ struct v4l2_device { char name[V4L2_DEVICE_NAME_SIZE]; }; -/* Initialize v4l2_dev and make dev->driver_data point to v4l2_dev */ +/* Initialize v4l2_dev and make dev->driver_data point to v4l2_dev. + dev may be NULL in rare cases (ISA devices). In that case you + must fill in the v4l2_dev->name field before calling this function. */ int __must_check v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev); /* Set v4l2_dev->dev->driver_data to NULL and unregister all sub-devices */ void v4l2_device_unregister(struct v4l2_device *v4l2_dev); @@ -52,23 +56,24 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev); /* Register a subdev with a v4l2 device. While registered the subdev module is marked as in-use. An error is returned if the module is no longer loaded when you attempt to register it. */ -int __must_check v4l2_device_register_subdev(struct v4l2_device *dev, struct v4l2_subdev *sd); +int __must_check v4l2_device_register_subdev(struct v4l2_device *v4l2_dev, + struct v4l2_subdev *sd); /* Unregister a subdev with a v4l2 device. Can also be called if the subdev wasn't registered. In that case it will do nothing. */ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd); /* Iterate over all subdevs. */ -#define v4l2_device_for_each_subdev(sd, dev) \ - list_for_each_entry(sd, &(dev)->subdevs, list) +#define v4l2_device_for_each_subdev(sd, v4l2_dev) \ + list_for_each_entry(sd, &(v4l2_dev)->subdevs, list) /* Call the specified callback for all subdevs matching the condition. Ignore any errors. Note that you cannot add or delete a subdev while walking the subdevs list. */ -#define __v4l2_device_call_subdevs(dev, cond, o, f, args...) \ +#define __v4l2_device_call_subdevs(v4l2_dev, cond, o, f, args...) \ do { \ struct v4l2_subdev *sd; \ \ - list_for_each_entry(sd, &(dev)->subdevs, list) \ + list_for_each_entry(sd, &(v4l2_dev)->subdevs, list) \ if ((cond) && sd->ops->o && sd->ops->o->f) \ sd->ops->o->f(sd , ##args); \ } while (0) @@ -77,12 +82,12 @@ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd); If the callback returns an error other than 0 or -ENOIOCTLCMD, then return with that error code. Note that you cannot add or delete a subdev while walking the subdevs list. */ -#define __v4l2_device_call_subdevs_until_err(dev, cond, o, f, args...) \ +#define __v4l2_device_call_subdevs_until_err(v4l2_dev, cond, o, f, args...) \ ({ \ struct v4l2_subdev *sd; \ long err = 0; \ \ - list_for_each_entry(sd, &(dev)->subdevs, list) { \ + list_for_each_entry(sd, &(v4l2_dev)->subdevs, list) { \ if ((cond) && sd->ops->o && sd->ops->o->f) \ err = sd->ops->o->f(sd , ##args); \ if (err && err != -ENOIOCTLCMD) \ @@ -94,16 +99,16 @@ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd); /* Call the specified callback for all subdevs matching grp_id (if 0, then match them all). Ignore any errors. Note that you cannot add or delete a subdev while walking the subdevs list. */ -#define v4l2_device_call_all(dev, grpid, o, f, args...) \ - __v4l2_device_call_subdevs(dev, \ +#define v4l2_device_call_all(v4l2_dev, grpid, o, f, args...) \ + __v4l2_device_call_subdevs(v4l2_dev, \ !(grpid) || sd->grp_id == (grpid), o, f , ##args) /* Call the specified callback for all subdevs matching grp_id (if 0, then match them all). If the callback returns an error other than 0 or -ENOIOCTLCMD, then return with that error code. Note that you cannot add or delete a subdev while walking the subdevs list. */ -#define v4l2_device_call_until_err(dev, grpid, o, f, args...) \ - __v4l2_device_call_subdevs_until_err(dev, \ +#define v4l2_device_call_until_err(v4l2_dev, grpid, o, f, args...) \ + __v4l2_device_call_subdevs_until_err(v4l2_dev, \ !(grpid) || sd->grp_id == (grpid), o, f , ##args) #endif diff --git a/linux/include/media/v4l2-subdev.h b/linux/include/media/v4l2-subdev.h index cd640c6f0..05b69652e 100644 --- a/linux/include/media/v4l2-subdev.h +++ b/linux/include/media/v4l2-subdev.h @@ -137,7 +137,7 @@ struct v4l2_subdev_ops { struct v4l2_subdev { struct list_head list; struct module *owner; - struct v4l2_device *dev; + struct v4l2_device *v4l2_dev; const struct v4l2_subdev_ops *ops; /* name must be unique */ char name[V4L2_SUBDEV_NAME_SIZE]; @@ -176,7 +176,7 @@ static inline void v4l2_subdev_init(struct v4l2_subdev *sd, /* ops->core MUST be set */ BUG_ON(!ops || !ops->core); sd->ops = ops; - sd->dev = NULL; + sd->v4l2_dev = NULL; sd->name[0] = '\0'; sd->grp_id = 0; sd->priv = NULL; |