summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/usb/w9968cf.txt30
-rw-r--r--drivers/usb/media/w9968cf.c128
-rw-r--r--drivers/usb/media/w9968cf.h1
-rw-r--r--drivers/usb/media/w9968cf_vpp.h3
4 files changed, 6 insertions, 156 deletions
diff --git a/Documentation/usb/w9968cf.txt b/Documentation/usb/w9968cf.txt
index 18a47738d56..9d46cd0b19e 100644
--- a/Documentation/usb/w9968cf.txt
+++ b/Documentation/usb/w9968cf.txt
@@ -57,16 +57,12 @@ based cameras should be supported as well.
The driver is divided into two modules: the basic one, "w9968cf", is needed for
the supported devices to work; the second one, "w9968cf-vpp", is an optional
module, which provides some useful video post-processing functions like video
-decoding, up-scaling and colour conversions. Once the driver is installed,
-every time an application tries to open a recognized device, "w9968cf" checks
-the presence of the "w9968cf-vpp" module and loads it automatically by default.
+decoding, up-scaling and colour conversions.
-Please keep in mind that official kernels do not include the second module for
-performance purposes. However it is always recommended to download and install
-the latest and complete release of the driver, replacing the existing one, if
-present: it will be still even possible not to load the "w9968cf-vpp" module at
-all, if you ever want to. Another important missing feature of the version in
-the official Linux 2.4 kernels is the writeable /proc filesystem interface.
+Note that the official kernels do neither include nor support the second
+module for performance purposes. Therefore, it is always recommended to
+download and install the latest and complete release of the driver,
+replacing the existing one, if present.
The latest and full-featured version of the W996[87]CF driver can be found at:
http://www.linux-projects.org. Please refer to the documentation included in
@@ -201,22 +197,6 @@ Note: The kernel must be compiled with the CONFIG_KMOD option
enabled for the 'ovcamchip' module to be loaded and for
this parameter to be present.
-------------------------------------------------------------------------------
-Name: vppmod_load
-Type: bool
-Syntax: <0|1>
-Description: Automatic 'w9968cf-vpp' module loading: 0 disabled, 1 enabled.
- If enabled, every time an application attempts to open a
- camera, 'insmod' searches for the video post-processing module
- in the system and loads it automatically (if present).
- The optional 'w9968cf-vpp' module adds extra image manipulation
- capabilities to the 'w9968cf' module,like software up-scaling,
- colour conversions and video decompression for very high frame
- rates.
-Default: 1
-Note: The kernel must be compiled with the CONFIG_KMOD option
- enabled for the 'w9968cf-vpp' module to be loaded and for
- this parameter to be present.
--------------------------------------------------------------------------------
Name: simcams
Type: int
Syntax: <n>
diff --git a/drivers/usb/media/w9968cf.c b/drivers/usb/media/w9968cf.c
index bff9434c8e5..9937fc64c8b 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);
diff --git a/drivers/usb/media/w9968cf.h b/drivers/usb/media/w9968cf.h
index 8acbfe205bc..47a6ff79417 100644
--- a/drivers/usb/media/w9968cf.h
+++ b/drivers/usb/media/w9968cf.h
@@ -195,7 +195,6 @@ enum w9968cf_vpp_flag {
};
static struct w9968cf_vpp_t* w9968cf_vpp;
-static DECLARE_MUTEX(w9968cf_vppmod_lock);
static DECLARE_WAIT_QUEUE_HEAD(w9968cf_vppmod_wait);
static LIST_HEAD(w9968cf_dev_list); /* head of V4L registered cameras list */
diff --git a/drivers/usb/media/w9968cf_vpp.h b/drivers/usb/media/w9968cf_vpp.h
index 3f5317dc4c2..f3b91b78267 100644
--- a/drivers/usb/media/w9968cf_vpp.h
+++ b/drivers/usb/media/w9968cf_vpp.h
@@ -37,7 +37,4 @@ struct w9968cf_vpp_t {
u8 busy; /* read-only flag: module is/is not in use */
};
-extern int w9968cf_vppmod_register(struct w9968cf_vpp_t*);
-extern int w9968cf_vppmod_deregister(struct w9968cf_vpp_t*);
-
#endif /* _W9968CF_VPP_H_ */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 10:04:07 +0000