diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-24 09:50:13 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-24 09:50:13 -0700 |
commit | 76d21c563569bcea6bc67d65cc2c460cff643058 (patch) | |
tree | 4dd2c9846ea7838077099646418978e354df1680 /drivers/media/video/v4l2-fh.c | |
parent | 6e50e9f9f4a8277b4d76de417ca77cf3921bd524 (diff) | |
parent | 472af2b05bdefcaee7e754e22cbf131110017ad6 (diff) |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (442 commits)
[media] videobuf2-dma-contig: make cookie() return a pointer to dma_addr_t
[media] sh_mobile_ceu_camera: Do not call vb2's mem_ops directly
[media] V4L: soc-camera: explicitly require V4L2_BUF_TYPE_VIDEO_CAPTURE
[media] v4l: soc-camera: Store negotiated buffer settings
[media] rc: interim support for 32-bit NEC-ish scancodes
[media] mceusb: topseed 0x0011 needs gen3 init for tx to work
[media] lirc_zilog: error out if buffer read bytes != chunk size
[media] lirc: silence some compile warnings
[media] hdpvr: use same polling interval as other OS
[media] ir-kbd-i2c: pass device code w/key in hauppauge case
[media] rc/keymaps: Remove the obsolete rc-rc5-tv keymap
[media] remove the old RC_MAP_HAUPPAUGE_NEW RC map
[media] rc/keymaps: Rename Hauppauge table as rc-hauppauge
[media] rc-rc5-hauppauge-new: Fix Hauppauge Grey mapping
[media] rc-rc5-hauppauge-new: Add support for the old Black RC
[media] rc-rc5-hauppauge-new: Add the old control to the table
[media] rc-winfast: Fix the keycode tables
[media] a800: Fix a few wrong IR key assignments
[media] opera1: Use multimedia keys instead of an app-specific mapping
[media] dw2102: Use multimedia keys instead of an app-specific mapping
...
Fix up trivial conflicts (remove/modify and some real conflicts) in:
arch/arm/mach-omap2/devices.c
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/dabusb/dabusb.c
drivers/staging/dabusb/dabusb.h
drivers/staging/easycap/easycap_ioctl.c
drivers/staging/usbvideo/usbvideo.c
drivers/staging/usbvideo/vicam.c
Diffstat (limited to 'drivers/media/video/v4l2-fh.c')
-rw-r--r-- | drivers/media/video/v4l2-fh.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-fh.c b/drivers/media/video/v4l2-fh.c index d78f184f40c..717f71e6370 100644 --- a/drivers/media/video/v4l2-fh.c +++ b/drivers/media/video/v4l2-fh.c @@ -23,6 +23,7 @@ */ #include <linux/bitops.h> +#include <linux/slab.h> #include <media/v4l2-dev.h> #include <media/v4l2-fh.h> #include <media/v4l2-event.h> @@ -33,6 +34,7 @@ int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev) fh->vdev = vdev; INIT_LIST_HEAD(&fh->list); set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags); + fh->prio = V4L2_PRIORITY_UNSET; /* * fh->events only needs to be initialized if the driver @@ -51,12 +53,28 @@ void v4l2_fh_add(struct v4l2_fh *fh) { unsigned long flags; + if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags)) + v4l2_prio_open(fh->vdev->prio, &fh->prio); spin_lock_irqsave(&fh->vdev->fh_lock, flags); list_add(&fh->list, &fh->vdev->fh_list); spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); } EXPORT_SYMBOL_GPL(v4l2_fh_add); +int v4l2_fh_open(struct file *filp) +{ + struct video_device *vdev = video_devdata(filp); + struct v4l2_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); + + filp->private_data = fh; + if (fh == NULL) + return -ENOMEM; + v4l2_fh_init(fh, vdev); + v4l2_fh_add(fh); + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_fh_open); + void v4l2_fh_del(struct v4l2_fh *fh) { unsigned long flags; @@ -64,6 +82,8 @@ void v4l2_fh_del(struct v4l2_fh *fh) spin_lock_irqsave(&fh->vdev->fh_lock, flags); list_del_init(&fh->list); spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); + if (test_bit(V4L2_FL_USE_FH_PRIO, &fh->vdev->flags)) + v4l2_prio_close(fh->vdev->prio, fh->prio); } EXPORT_SYMBOL_GPL(v4l2_fh_del); @@ -77,3 +97,30 @@ void v4l2_fh_exit(struct v4l2_fh *fh) v4l2_event_free(fh); } EXPORT_SYMBOL_GPL(v4l2_fh_exit); + +int v4l2_fh_release(struct file *filp) +{ + struct v4l2_fh *fh = filp->private_data; + + if (fh) { + v4l2_fh_del(fh); + v4l2_fh_exit(fh); + kfree(fh); + } + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_fh_release); + +int v4l2_fh_is_singular(struct v4l2_fh *fh) +{ + unsigned long flags; + int is_singular; + + if (fh == NULL || fh->vdev == NULL) + return 0; + spin_lock_irqsave(&fh->vdev->fh_lock, flags); + is_singular = list_is_singular(&fh->list); + spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); + return is_singular; +} +EXPORT_SYMBOL_GPL(v4l2_fh_is_singular); |