aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/media/w9968cf.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/media/w9968cf.c')
-rw-r--r--drivers/usb/media/w9968cf.c128
1 files changed, 1 insertions, 127 deletions
diff --git a/drivers/usb/media/w9968cf.c b/drivers/usb/media/w9968cf.c
index bff9434c8e55..9937fc64c8bf 100644
--- a/drivers/usb/media/w9968cf.c
+++ b/drivers/usb/media/w9968cf.c
@@ -62,7 +62,6 @@ MODULE_LICENSE(W9968CF_MODULE_LICENSE);
MODULE_SUPPORTED_DEVICE("Video");
static int ovmod_load = W9968CF_OVMOD_LOAD;
-static int vppmod_load = W9968CF_VPPMOD_LOAD;
static unsigned short simcams = W9968CF_SIMCAMS;
static short video_nr[]={[0 ... W9968CF_MAX_DEVICES-1] = -1}; /*-1=first free*/
static unsigned int packet_size[] = {[0 ... W9968CF_MAX_DEVICES-1] =
@@ -107,7 +106,6 @@ static unsigned int param_nv[24]; /* number of values per parameter */
#ifdef CONFIG_KMOD
module_param(ovmod_load, bool, 0644);
-module_param(vppmod_load, bool, 0444);
#endif
module_param(simcams, ushort, 0644);
module_param_array(video_nr, short, &param_nv[0], 0444);
@@ -150,18 +148,6 @@ MODULE_PARM_DESC(ovmod_load,
"\ninto memory."
"\nDefault value is "__MODULE_STRING(W9968CF_OVMOD_LOAD)"."
"\n");
-MODULE_PARM_DESC(vppmod_load,
- "\n<0|1> Automatic 'w9968cf-vpp' module loading."
- "\n0 disabled, 1 enabled."
- "\nIf enabled, every time an application attempts to open a"
- "\ncamera, 'insmod' searches for the video post-processing"
- "\nmodule in the system and loads it automatically (if"
- "\npresent). The optional 'w9968cf-vpp' module adds extra"
- "\n image manipulation functions to the 'w9968cf' module,like"
- "\nsoftware up-scaling,colour conversions and video decoding"
- "\nfor very high frame rates."
- "\nDefault value is "__MODULE_STRING(W9968CF_VPPMOD_LOAD)"."
- "\n");
#endif
MODULE_PARM_DESC(simcams,
"\n<n> Number of cameras allowed to stream simultaneously."
@@ -492,10 +478,6 @@ static void w9968cf_push_frame(struct w9968cf_device*, u8 f_num);
static void w9968cf_pop_frame(struct w9968cf_device*,struct w9968cf_frame_t**);
static void w9968cf_release_resources(struct w9968cf_device*);
-/* Intermodule communication */
-static int w9968cf_vppmod_detect(struct w9968cf_device*);
-static void w9968cf_vppmod_release(struct w9968cf_device*);
-
/****************************************************************************
@@ -2737,9 +2719,7 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
cam->streaming = 0;
cam->misconfigured = 0;
- if (!w9968cf_vpp)
- if ((err = w9968cf_vppmod_detect(cam)))
- goto out;
+ w9968cf_adjust_configuration(cam);
if ((err = w9968cf_allocate_memory(cam)))
goto deallocate_memory;
@@ -2766,7 +2746,6 @@ static int w9968cf_open(struct inode* inode, struct file* filp)
deallocate_memory:
w9968cf_deallocate_memory(cam);
-out:
DBG(2, "Failed to open the video device")
up(&cam->dev_sem);
up_read(&w9968cf_disconnect);
@@ -2784,8 +2763,6 @@ static int w9968cf_release(struct inode* inode, struct file* filp)
w9968cf_stop_transfer(cam);
- w9968cf_vppmod_release(cam);
-
if (cam->disconnected) {
w9968cf_release_resources(cam);
up(&cam->dev_sem);
@@ -3681,106 +3658,6 @@ static struct usb_driver w9968cf_usb_driver = {
* Module init, exit and intermodule communication *
****************************************************************************/
-static int w9968cf_vppmod_detect(struct w9968cf_device* cam)
-{
- if (!w9968cf_vpp)
- if (vppmod_load)
- request_module("w9968cf-vpp");
-
- down(&w9968cf_vppmod_lock);
-
- if (!w9968cf_vpp) {
- DBG(4, "Video post-processing module not detected")
- w9968cf_adjust_configuration(cam);
- goto out;
- }
-
- if (!try_module_get(w9968cf_vpp->owner)) {
- DBG(1, "Couldn't increment the reference count of "
- "the video post-processing module")
- up(&w9968cf_vppmod_lock);
- return -ENOSYS;
- }
-
- w9968cf_vpp->busy++;
-
- DBG(5, "Video post-processing module detected")
-
-out:
- up(&w9968cf_vppmod_lock);
- return 0;
-}
-
-
-static void w9968cf_vppmod_release(struct w9968cf_device* cam)
-{
- down(&w9968cf_vppmod_lock);
-
- if (w9968cf_vpp && w9968cf_vpp->busy) {
- module_put(w9968cf_vpp->owner);
- w9968cf_vpp->busy--;
- wake_up(&w9968cf_vppmod_wait);
- DBG(5, "Video post-processing module released")
- }
-
- up(&w9968cf_vppmod_lock);
-}
-
-
-int w9968cf_vppmod_register(struct w9968cf_vpp_t* vpp)
-{
- down(&w9968cf_vppmod_lock);
-
- if (w9968cf_vpp) {
- KDBG(1, "Video post-processing module already registered")
- up(&w9968cf_vppmod_lock);
- return -EINVAL;
- }
-
- w9968cf_vpp = vpp;
- w9968cf_vpp->busy = 0;
-
- KDBG(2, "Video post-processing module registered")
- up(&w9968cf_vppmod_lock);
- return 0;
-}
-
-
-int w9968cf_vppmod_deregister(struct w9968cf_vpp_t* vpp)
-{
- down(&w9968cf_vppmod_lock);
-
- if (!w9968cf_vpp) {
- up(&w9968cf_vppmod_lock);
- return -EINVAL;
- }
-
- if (w9968cf_vpp != vpp) {
- KDBG(1, "Only the owner can unregister the video "
- "post-processing module")
- up(&w9968cf_vppmod_lock);
- return -EINVAL;
- }
-
- if (w9968cf_vpp->busy) {
- KDBG(2, "Video post-processing module busy. Wait for it to be "
- "released...")
- up(&w9968cf_vppmod_lock);
- wait_event(w9968cf_vppmod_wait, !w9968cf_vpp->busy);
- w9968cf_vpp = NULL;
- goto out;
- }
-
- w9968cf_vpp = NULL;
-
- up(&w9968cf_vppmod_lock);
-
-out:
- KDBG(2, "Video post-processing module unregistered")
- return 0;
-}
-
-
static int __init w9968cf_module_init(void)
{
int err;
@@ -3810,6 +3687,3 @@ static void __exit w9968cf_module_exit(void)
module_init(w9968cf_module_init);
module_exit(w9968cf_module_exit);
-
-EXPORT_SYMBOL(w9968cf_vppmod_register);
-EXPORT_SYMBOL(w9968cf_vppmod_deregister);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 10:11:00 +0000