diff options
Diffstat (limited to 'drivers/usb/media/pwc/pwc-if.c')
| -rw-r--r-- | drivers/usb/media/pwc/pwc-if.c | 2210 |
1 files changed, 0 insertions, 2210 deletions
diff --git a/drivers/usb/media/pwc/pwc-if.c b/drivers/usb/media/pwc/pwc-if.c deleted file mode 100644 index 4f9b0dc6fd7b..000000000000 --- a/drivers/usb/media/pwc/pwc-if.c +++ /dev/null @@ -1,2210 +0,0 @@ -/* Linux driver for Philips webcam - USB and Video4Linux interface part. - (C) 1999-2004 Nemosoft Unv. - (C) 2004 Luc Saillard (luc@saillard.org) - - NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx - driver and thus may have bugs that are not present in the original version. - Please send bug reports and support requests to <luc@saillard.org>. - The decompression routines have been implemented by reverse-engineering the - Nemosoft binary pwcx module. Caveat emptor. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - -*/ - -/* - This code forms the interface between the USB layers and the Philips - specific stuff. Some adanved stuff of the driver falls under an - NDA, signed between me and Philips B.V., Eindhoven, the Netherlands, and - is thus not distributed in source form. The binary pwcx.o module - contains the code that falls under the NDA. - - In case you're wondering: 'pwc' stands for "Philips WebCam", but - I really didn't want to type 'philips_web_cam' every time (I'm lazy as - any Linux kernel hacker, but I don't like uncomprehensible abbreviations - without explanation). - - Oh yes, convention: to disctinguish between all the various pointers to - device-structures, I use these names for the pointer variables: - udev: struct usb_device * - vdev: struct video_device * - pdev: struct pwc_devive * -*/ - -/* Contributors: - - Alvarado: adding whitebalance code - - Alistar Moire: QuickCam 3000 Pro device/product ID - - Tony Hoyle: Creative Labs Webcam 5 device/product ID - - Mark Burazin: solving hang in VIDIOCSYNC when camera gets unplugged - - Jk Fang: Sotec Afina Eye ID - - Xavier Roche: QuickCam Pro 4000 ID - - Jens Knudsen: QuickCam Zoom ID - - J. Debert: QuickCam for Notebooks ID -*/ - -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/poll.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/version.h> -#include <asm/io.h> - -#include "pwc.h" -#include "pwc-ioctl.h" -#include "pwc-kiara.h" -#include "pwc-timon.h" -#include "pwc-uncompress.h" - -/* Function prototypes and driver templates */ - -/* hotplug device table support */ -static struct usb_device_id pwc_device_table [] = { - { USB_DEVICE(0x0471, 0x0302) }, /* Philips models */ - { USB_DEVICE(0x0471, 0x0303) }, - { USB_DEVICE(0x0471, 0x0304) }, - { USB_DEVICE(0x0471, 0x0307) }, - { USB_DEVICE(0x0471, 0x0308) }, - { USB_DEVICE(0x0471, 0x030C) }, - { USB_DEVICE(0x0471, 0x0310) }, - { USB_DEVICE(0x0471, 0x0311) }, - { USB_DEVICE(0x0471, 0x0312) }, - { USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */ - { USB_DEVICE(0x069A, 0x0001) }, /* Askey */ - { USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */ - { USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */ - { USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam Pro 4000 */ - { USB_DEVICE(0x046D, 0x08B3) }, /* Logitech QuickCam Zoom (old model) */ - { USB_DEVICE(0x046D, 0x08B4) }, /* Logitech QuickCam Zoom (new model) */ - { USB_DEVICE(0x046D, 0x08B5) }, /* Logitech QuickCam Orbit/Sphere */ - { USB_DEVICE(0x046D, 0x08B6) }, /* Logitech (reserved) */ - { USB_DEVICE(0x046D, 0x08B7) }, /* Logitech (reserved) */ - { USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */ - { USB_DEVICE(0x055D, 0x9000) }, /* Samsung */ - { USB_DEVICE(0x055D, 0x9001) }, - { USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */ - { USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */ - { USB_DEVICE(0x04CC, 0x8116) }, /* Afina Eye */ - { USB_DEVICE(0x06BE, 0x8116) }, /* new Afina Eye */ - { USB_DEVICE(0x0d81, 0x1910) }, /* Visionite */ - { USB_DEVICE(0x0d81, 0x1900) }, - { } -}; -MODULE_DEVICE_TABLE(usb, pwc_device_table); - -static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id); -static void usb_pwc_disconnect(struct usb_interface *intf); - -static struct usb_driver pwc_driver = { - .name = "Philips webcam", /* name */ - .id_table = pwc_device_table, - .probe = usb_pwc_probe, /* probe() */ - .disconnect = usb_pwc_disconnect, /* disconnect() */ -}; - -#define MAX_DEV_HINTS 20 -#define MAX_ISOC_ERRORS 20 - -static int default_size = PSZ_QCIF; -static int default_fps = 10; -static int default_fbufs = 3; /* Default number of frame buffers */ -static int default_mbufs = 2; /* Default number of mmap() buffers */ - int pwc_trace = TRACE_MODULE | TRACE_FLOW | TRACE_PWCX; -static int power_save = 0; -static int led_on = 100, led_off = 0; /* defaults to LED that is on while in use */ -static int pwc_preferred_compression = 2; /* 0..3 = uncompressed..high */ -static struct { - int type; - char serial_number[30]; - int device_node; - struct pwc_device *pdev; -} device_hint[MAX_DEV_HINTS]; - -/***/ - -static int pwc_video_open(struct inode *inode, struct file *file); -static int pwc_video_close(struct inode *inode, struct file *file); -static ssize_t pwc_video_read(struct file *file, char __user * buf, - size_t count, loff_t *ppos); -static unsigned int pwc_video_poll(struct file *file, poll_table *wait); -static int pwc_video_ioctl(struct inode *inode, struct file *file, - unsigned int ioctlnr, unsigned long arg); -static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma); - -static struct file_operations pwc_fops = { - .owner = THIS_MODULE, - .open = pwc_video_open, - .release = pwc_video_close, - .read = pwc_video_read, - .poll = pwc_video_poll, - .mmap = pwc_video_mmap, - .ioctl = pwc_video_ioctl, - .compat_ioctl = v4l_compat_ioctl32, - .llseek = no_llseek, -}; -static struct video_device pwc_template = { - .owner = THIS_MODULE, - .name = "Philips Webcam", /* Filled in later */ - .type = VID_TYPE_CAPTURE, - .hardware = VID_HARDWARE_PWC, - .release = video_device_release, - .fops = &pwc_fops, - .minor = -1, -}; - -/***************************************************************************/ - -/* Okay, this is some magic that I worked out and the reasoning behind it... - - The biggest problem with any USB device is of course: "what to do - when the user unplugs the device while it is in use by an application?" - We have several options: - 1) Curse them with the 7 plagues when they do (requires divine intervention) - 2) Tell them not to (won't work: they'll do it anyway) - 3) Oops the kernel (this will have a negative effect on a user's uptime) - 4) Do something sensible. - - Of course, we go for option 4. - - It happens that this device will be linked to two times, once from - usb_device and once from the video_device in their respective 'private' - pointers. This is done when the device is probed() and all initialization - succeeded. The pwc_device struct links back to both structures. - - When a device is unplugged while in use it will be removed from the - list of known USB devices; I also de-register it as a V4L device, but - unfortunately I can't free the memory since the struct is still in use - by the file descriptor. This free-ing is then deferend until the first - opportunity. Crude, but it works. - - A small 'advantage' is that if a user unplugs the cam and plugs it back - in, it should get assigned the same video device minor, but unfortunately - it's non-trivial to re-link the cam back to the video device... (that - would surely be magic! :)) -*/ - -/***************************************************************************/ -/* Private functions */ - -/* Here we want the physical address of the memory. - * This is used when initializing the contents of the area. - */ -static inline unsigned long kvirt_to_pa(unsigned long adr) -{ - unsigned long kva, ret; - - kva = (unsigned long) page_address(vmalloc_to_page((void *)adr)); - kva |= adr & (PAGE_SIZE-1); /* restore the offset */ - ret = __pa(kva); - return ret; -} - -static void * rvmalloc(unsigned long size) -{ - void * mem; - unsigned long adr; - - size=PAGE_ALIGN(size); - mem=vmalloc_32(size); - if (mem) - { - memset(mem, 0, size); /* Clear the ram out, no junk to the user */ - adr=(unsigned long) mem; - while (size > 0) - { - SetPageReserved(vmalloc_to_page((void *)adr)); - adr+=PAGE_SIZE; - size-=PAGE_SIZE; - } - } - return mem; -} - -static void rvfree(void * mem, unsigned long size) -{ - unsigned long adr; - - if (mem) - { - adr=(unsigned long) mem; - while ((long) size > 0) - { - ClearPageReserved(vmalloc_to_page((void *)adr)); - adr+=PAGE_SIZE; - size-=PAGE_SIZE; - } - vfree(mem); - } -} - - - - -static int pwc_allocate_buffers(struct pwc_device *pdev) -{ - int i; - void *kbuf; - - Trace(TRACE_MEMORY, ">> pwc_allocate_buffers(pdev = 0x%p)\n", pdev); - - if (pdev == NULL) - return -ENXIO; - -#ifdef PWC_MAGIC - if (pdev->magic != PWC_MAGIC) { - Err("allocate_buffers(): magic failed.\n"); - return -ENXIO; - } -#endif - /* Allocate Isochronous pipe buffers */ - for (i = 0; i < MAX_ISO_BUFS; i++) { - if (pdev->sbuf[i].data == NULL) { - kbuf = kmalloc(ISO_BUFFER_SIZE, GFP_KERNEL); - if (kbuf == NULL) { - Err("Failed to allocate iso buffer %d.\n", i); - return -ENOMEM; - } - Trace(TRACE_MEMORY, "Allocated iso buffer at %p.\n", kbuf); - pdev->sbuf[i].data = kbuf; - memset(kbuf, 0, ISO_BUFFER_SIZE); - } - } - - /* Allocate frame buffer structure */ - if (pdev->fbuf == NULL) { - kbuf = kmalloc(default_fbufs * sizeof(struct pwc_frame_buf), GFP_KERNEL); - if (kbuf == NULL) { - Err("Failed to allocate frame buffer structure.\n"); - return -ENOMEM; - } - Trace(TRACE_MEMORY, "Allocated frame buffer structure at %p.\n", kbuf); - pdev->fbuf = kbuf; - memset(kbuf, 0, default_fbufs * sizeof(struct pwc_frame_buf)); - } - /* create frame buffers, and make circular ring */ - for (i = 0; i < default_fbufs; i++) { - if (pdev->fbuf[i].data == NULL) { - kbuf = vmalloc(PWC_FRAME_SIZE); /* need vmalloc since frame buffer > 128K */ - if (kbuf == NULL) { - Err("Failed to allocate frame buffer %d.\n", i); - return -ENOMEM; - } - Trace(TRACE_MEMORY, "Allocated frame buffer %d at %p.\n", i, kbuf); - pdev->fbuf[i].data = kbuf; - memset(kbuf, 128, PWC_FRAME_SIZE); - } - } - - /* Allocate decompressor table space */ - kbuf = NULL; - switch (pdev->type) - { - case 675: - case 680: - case 690: - case 720: - case 730: - case 740: - case 750: -#if 0 - Trace(TRACE_MEMORY,"private_data(%zu)\n",sizeof(struct pwc_dec23_private)); - kbuf = kmalloc(sizeof(struct pwc_dec23_private), GFP_KERNEL); /* Timon & Kiara */ - break; - case 645: - case 646: - /* TODO & FIXME */ - kbuf = kmalloc(sizeof(struct pwc_dec23_private), GFP_KERNEL); - break; -#endif - ; - } - pdev->decompress_data = kbuf; - - /* Allocate image buffer; double buffer for mmap() */ - kbuf = rvmalloc(default_mbufs * pdev->len_per_image); - if (kbuf == NULL) { - Err("Failed to allocate image buffer(s). needed (%d)\n",default_mbufs * pdev->len_per_image); - return -ENOMEM; - } - Trace(TRACE_MEMORY, "Allocated image buffer at %p.\n", kbuf); - pdev->image_data = kbuf; - for (i = 0; i < default_mbufs; i++) - pdev->image_ptr[i] = kbuf + i * pdev->len_per_image; - for (; i < MAX_IMAGES; i++) - pdev->image_ptr[i] = NULL; - - kbuf = NULL; - - Trace(TRACE_MEMORY, "<< pwc_allocate_buffers()\n"); - return 0; -} - -static void pwc_free_buffers(struct pwc_device *pdev) -{ - int i; - - Trace(TRACE_MEMORY, "Entering free_buffers(%p).\n", pdev); - - if (pdev == NULL) - return; -#ifdef PWC_MAGIC - if (pdev->magic != PWC_MAGIC) { - Err("free_buffers(): magic failed.\n"); - return; - } -#endif - - /* Release Iso-pipe buffers */ - for (i = 0; i < MAX_ISO_BUFS; i++) - if (pdev->sbuf[i].data != NULL) { - Trace(TRACE_MEMORY, "Freeing ISO buffer at %p.\n", pdev->sbuf[i].data); - kfree(pdev->sbuf[i].data); - pdev->sbuf[i].data = NULL; - } - - /* The same for frame buffers */ - if (pdev->fbuf != NULL) { - for (i = 0; i < default_fbufs; i++) { - if (pdev->fbuf[i].data != NULL) { - Trace(TRACE_MEMORY, "Freeing frame buffer %d at %p.\n", i, pdev->fbuf[i].data); - vfree(pdev->fbuf[i].data); - pdev->fbuf[i].data = NULL; - } - } - kfree(pdev->fbuf); - pdev->fbuf = NULL; - } - - /* Intermediate decompression buffer & tables */ - if (pdev->decompress_data != NULL) { - Trace(TRACE_MEMORY, "Freeing decompression buffer at %p.\n", pdev->decompress_data); - kfree(pdev->decompress_data); - pdev->decompress_data = NULL; - } - pdev->decompressor = NULL; - - /* Release image buffers */ - if (pdev->image_data != NULL) { - Trace(TRACE_MEMORY, "Freeing image buffer at %p.\n", pdev->image_data); - rvfree(pdev->image_data, default_mbufs * pdev->len_per_image); - } - pdev->image_data = NULL; - - Trace(TRACE_MEMORY, "Leaving free_buffers().\n"); -} - -/* The frame & image buffer mess. - - Yes, this is a mess. Well, it used to be simple, but alas... In this - module, 3 buffers schemes are used to get the data from the USB bus to - the user program. The first scheme involves the ISO buffers (called thus - since they transport ISO data from the USB controller), and not really - interesting. Suffices to say the data from this buffer is quickly - gathered in an interrupt handler (pwc_isoc_handler) and placed into the - frame buffer. - - The frame buffer is the second scheme, and is the central element here. - It collects the data from a single frame from the camera (hence, the - name). Frames are delimited by the USB camera with a short USB packet, - so that's easy to detect. The frame buffers form a list that is filled - by the camera+USB controller and drained by the user process through - either read() or mmap(). - - The image buffer is the third scheme, in which frames are decompressed - and converted into planar format. For mmap() there is more than - one image buffer available. - - The frame buffers provide the image buffering. In case the user process - is a bit slow, this introduces lag and some undesired side-effects. - The problem arises when the frame buffer is full. I used to drop the last - frame, which makes the data in the queue stale very quickly. But dropping - the frame at the head of the queue proved to be a litte bit more difficult. - I tried a circular linked scheme, but this introduced more problems than - it solved. - - Because filling and draining are completely asynchronous processes, this - requires some fiddling with pointers and mutexes. - - Eventually, I came up with a system with 2 lists: an 'empty' frame list - and a 'full' frame list: - * Initially, all frame buffers but one are on the 'empty' list; the one - remaining buffer is our initial fill frame. - * If a frame is needed for filling, we try to take it from the 'empty' - list, unless that list is empty, in which case we take the buffer at - the head of the 'full' list. - * When our fill buffer has been filled, it is appended to the 'full' - list. - * If a frame is needed by read() or mmap(), it is taken from the head of - the 'full' list, handled, and then appended to the 'empty' list. If no - buffer is present on the 'full' list, we wait. - The advantage is that the buffer that is currently being decompressed/ - converted, is on neither list, and thus not in our way (any other scheme - I tried had the problem of old data lingering in the queue). - - Whatever strategy you choose, it always remains a tradeoff: with more - frame buffers the chances of a missed frame are reduced. On the other - hand, on slower machines it introduces lag because the queue will - always be full. - */ - -/** - \brief Find next frame buffer to fill. Take from empty or full list, whichever comes first. - */ -static inline int pwc_next_fill_frame(struct pwc_device *pdev) -{ - int ret; - unsigned long flags; - - ret = 0; - spin_lock_irqsave(&pdev->ptrlock, flags); - if (pdev->fill_frame != NULL) { - /* append to 'full' list */ - if (pdev->full_frames == NULL) { - pdev->full_frames = pdev->fill_frame; - pdev->full_frames_tail = pdev->full_frames; - } - else { - pdev->full_frames_tail->next = pdev->fill_frame; - pdev->full_frames_tail = pdev->fill_frame; - } - } - if (pdev->empty_frames != NULL) { - /* We have empty frames available. That's easy */ - pdev->fill_frame = pdev->empty_frames; - pdev->empty_frames = pdev->empty_frames->next; - } - else { - /* Hmm. Take it from the full list */ -#if PWC_DEBUG - /* sanity check */ - if (pdev->full_frames == NULL) { - Err("Neither empty or full frames available!\n"); - spin_unlock_irqrestore(&pdev->ptrlock, flags); - return -EINVAL; - } -#endif - pdev->fill_frame = pdev->full_frames; - pdev->full_frames = pdev->full_frames->next; - ret = 1; - } - pdev->fill_frame->next = NULL; -#if PWC_DEBUG - Trace(TRACE_SEQUENCE, "Assigning sequence number %d.\n", pdev->sequence); - pdev->fill_frame->sequence = pdev->sequence++; -#endif - spin_unlock_irqrestore(&pdev->ptrlock, flags); - return ret; -} - - -/** - \brief Reset all buffers, pointers and lists, except for the image_used[] buffer. - - If the image_used[] buffer is cleared too, mmap()/VIDIOCSYNC will run into trouble. - */ -static void pwc_reset_buffers(struct pwc_device *pdev) -{ - int i; - unsigned long flags; - - spin_lock_irqsave(&pdev->ptrlock, flags); - pdev->full_frames = NULL; - pdev->full_frames_tail = NULL; - for (i = 0; i < default_fbufs; i++) { - pdev->fbuf[i].filled = 0; - if (i > 0) - pdev->fbuf[i].next = &pdev->fbuf[i - 1]; - else - pdev->fbuf->next = NULL; - } - pdev->empty_frames = &pdev->fbuf[default_fbufs - 1]; - pdev->empty_frames_tail = pdev->fbuf; - pdev->read_frame = NULL; - pdev->fill_frame = pdev->empty_frames; - pdev->empty_frames = pdev->empty_frames->next; - - pdev->image_read_pos = 0; - pdev->fill_image = 0; - spin_unlock_irqrestore(&pdev->ptrlock, flags); -} - - -/** - \brief Do all the handling for getting one frame: get pointer, decompress, advance pointers. - */ -static int pwc_handle_frame(struct pwc_device *pdev) -{ - int ret = 0; - unsigned long flags; - - spin_lock_irqsave(&pdev->ptrlock, flags); - /* First grab our read_frame; this is removed from all lists, so - we can release the lock after this without problems */ - if (pdev->read_frame != NULL) { - /* This can't theoretically happen */ - Err("Huh? Read frame still in use?\n"); - } - else { - if (pdev->full_frames == NULL) { - Err("Woops. No frames ready.\n"); - } - else { - pdev->read_frame = pdev->full_frames; - pdev->full_frames = pdev->full_frames->next; - pdev->read_frame->next = NULL; - } - - if (pdev->read_frame != NULL) { -#if PWC_DEBUG - Trace(TRACE_SEQUENCE, "Decompressing frame %d\n", pdev->read_frame->sequence); -#endif - /* Decompression is a lenghty process, so it's outside of the lock. - This gives the isoc_handler the opportunity to fill more frames - in the mean time. - */ - spin_unlock_irqrestore(&pdev->ptrlock, flags); - ret = pwc_decompress(pdev); - spin_lock_irqsave(&pdev->ptrlock, flags); - - /* We're done with read_buffer, tack it to the end of the empty buffer list */ - if (pdev->empty_frames == NULL) { - pdev->empty_frames = pdev->read_frame; - pdev->empty_frames_tail = pdev->empty_frames; - } - else { - pdev->empty_frames_tail->next = pdev->read_frame; - pdev->empty_frames_tail = pdev->read_frame; - } - pdev->read_frame = NULL; - } - } - spin_unlock_irqrestore(&pdev->ptrlock, flags); - return ret; -} - -/** - \brief Advance pointers of image buffer (after each user request) -*/ -static inline void pwc_next_image(struct pwc_device *pdev) -{ - pdev->image_used[pdev->fill_image] = 0; - pdev->fill_image = (pdev->fill_image + 1) % default_mbufs; -} - - -/* This gets called for the Isochronous pipe (video). This is done in - * interrupt time, so it has to be fast, not crash, and not stall. Neat. - */ -static void pwc_isoc_handler(struct urb *urb, struct pt_regs *regs) -{ - struct pwc_device *pdev; - int i, fst, flen; - int awake; - struct pwc_frame_buf *fbuf; - unsigned char *fillptr = NULL, *iso_buf = NULL; - - awake = 0; - pdev = (struct pwc_device *)urb->context; - if (pdev == NULL) { - Err("isoc_handler() called with NULL device?!\n"); - return; - } -#ifdef PWC_MAGIC - if (pdev->magic != PWC_MAGIC) { - Err("isoc_handler() called with bad magic!\n"); - return; - } -#endif - if (urb->status == -ENOENT || urb->status == -ECONNRESET) { - Trace(TRACE_OPEN, "pwc_isoc_handler(): URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a"); - return; - } - if (urb->status != -EINPROGRESS && urb->status != 0) { - const char *errmsg; - - errmsg = "Unknown"; - switch(urb->status) { - case -ENOSR: errmsg = "Buffer error (overrun)"; break; - case -EPIPE: errmsg = "Stalled (device not responding)"; break; - case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; - case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; - case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; - case -ETIMEDOUT: errmsg = "NAK (device does not respond)"; break; - } - Trace(TRACE_FLOW, "pwc_isoc_handler() called with status %d [%s].\n", urb->status, errmsg); - /* Give up after a number of contiguous errors on the USB bus. - Appearantly something is wrong so we simulate an unplug event. - */ - if (++pdev->visoc_errors > MAX_ISOC_ERRORS) - { - Info("Too many ISOC errors, bailing out.\n"); - pdev->error_status = EIO; - awake = 1; - wake_up_interruptible(&pdev->frameq); - } - goto handler_end; // ugly, but practical - } - - fbuf = pdev->fill_frame; - if (fbuf == NULL) { - Err("pwc_isoc_handler without valid fill frame.\n"); - awake = 1; - goto handler_end; - } - else { - fillptr = fbuf->data + fbuf->filled; - } - - /* Reset ISOC error counter. We did get here, after all. */ - pdev->visoc_errors = 0; - - /* vsync: 0 = don't copy data - 1 = sync-hunt - 2 = synched - */ - /* Compact data */ - for (i = 0; i < urb->number_of_packets; i++) { - fst = urb->iso_frame_desc[i].status; - flen = urb->iso_frame_desc[i].actual_length; - iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - if (fst == 0) { - if (flen > 0) { /* if valid data... */ - if (pdev->vsync > 0) { /* ...and we are not sync-hunting... */ - pdev->vsync = 2; - - /* ...copy data to frame buffer, if possible */ - if (flen + fbuf->filled > pdev->frame_total_size) { - Trace(TRACE_FLOW, "Frame buffer overflow (flen = %d, frame_total_size = %d).\n", flen, pdev->frame_total_size); - pdev->vsync = 0; /* Hmm, let's wait for an EOF (end-of-frame) */ - pdev->vframes_error++; - } - else { - memmove(fillptr, iso_buf, flen); - fillptr += flen; - } - } - fbuf->filled += flen; - } /* ..flen > 0 */ - - if (flen < pdev->vlast_packet_size) { - /* Shorter packet... We probably have the end of an image-frame; - wake up read() process and let select()/poll() do something. - Decompression is done in user time over there. - */ - if (pdev->vsync == 2) { - /* The ToUCam Fun CMOS sensor causes the firmware to send 2 or 3 bogus - frames on the USB wire after an exposure change. This conditition is - however detected in the cam and a bit is set in the header. - */ - if (pdev->type == 730) { - unsigned char *ptr = (unsigned char *)fbuf->data; - - if (ptr[1] == 1 && ptr[0] & 0x10) { -#if PWC_DEBUG - Debug("Hyundai CMOS sensor bug. Dropping frame %d.\n", fbuf->sequence); -#endif - pdev->drop_frames += 2; - pdev->vframes_error++; - } - if ((ptr[0] ^ pdev->vmirror) & 0x01) { - if (ptr[0] & 0x01) - Info("Snapshot button pressed.\n"); - else - Info("Snapshot button released.\n"); - } - if ((ptr[0] ^ pdev->vmirror) & 0x02) { - if (ptr[0] & 0x02) - Info("Image is mirrored.\n"); - else - Info("Image is normal.\n"); - } - pdev->vmirror = ptr[0] & 0x03; - /* Sometimes the trailer of the 730 is still sent as a 4 byte packet - after a short frame; this condition is filtered out specifically. A 4 byte - frame doesn't make sense anyway. - So we get either this sequence: - drop_bit set -> 4 byte frame -> short frame -> good frame - Or this one: - drop_bit set -> short frame -> good frame - So we drop either 3 or 2 frames in all! - */ - if (fbuf->filled == 4) - pdev->drop_frames++; - } - - /* In case we were instructed to drop the frame, do so silently. - The buffer pointers are not updated either (but the counters are reset below). - */ - if (pdev->drop_frames > 0) - pdev->drop_frames--; - else { - /* Check for underflow first */ - if (fbuf->filled < pdev->frame_total_size) { - Trace(TRACE_FLOW, "Frame buffer underflow (%d bytes); discarded.\n", fbuf->filled); - pdev->vframes_error++; - } - else { - /* Send only once per EOF */ - awake = 1; /* delay wake_ups */ - - /* Find our next frame to fill. This will always succeed, since we - * nick a frame from either empty or full list, but if we had to - * take it from the full list, it means a frame got dropped. - */ - if (pwc_next_fill_frame(pdev)) { - pdev->vframes_dumped++; - if ((pdev->vframe_count > FRAME_LOWMARK) && (pwc_trace & TRACE_FLOW)) { - if (pdev->vframes_dumped < 20) - Trace(TRACE_FLOW, "Dumping frame %d.\n", pdev->vframe_count); - if (pdev->vframes_dumped == 20) - Trace(TRACE_FLOW, "Dumping frame %d (last message).\n", pdev->vframe_count); - } - } - fbuf = pdev->fill_frame; - } - } /* !drop_frames */ - pdev->vframe_count++; - } - fbuf->filled = 0; - fillptr = fbuf->data; - pdev->vsync = 1; - } /* .. flen < last_packet_size */ - pdev->vlast_packet_size = flen; - } /* ..status == 0 */ -#if PWC_DEBUG - /* This is normally not interesting to the user, unless you are really debugging something */ - else { - static int iso_error = 0; - iso_error++; - if (iso_error < 20) - Trace(TRACE_FLOW, "Iso frame %d of USB has error %d\n", i, fst); - } -#endif - } - -handler_end: - if (awake) - wake_up_interruptible(&pdev->frameq); - - urb->dev = pdev->udev; - i = usb_submit_urb(urb, GFP_ATOMIC); - if (i != 0) - Err("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i); -} - - -static int pwc_isoc_init(struct pwc_device *pdev) -{ - struct usb_device *udev; - struct urb *urb; - int i, j, ret; - - struct usb_interface *intf; - struct usb_host_interface *idesc = NULL; - - if (pdev == NULL) - return -EFAULT; - if (pdev->iso_init) - return 0; - pdev->vsync = 0; - udev = pdev->udev; - - /* Get the current alternate interface, adjust packet size */ - if (!udev->actconfig) - return -EFAULT; -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,5) - idesc = &udev->actconfig->interface[0]->altsetting[pdev->valternate]; -#else - intf = usb_ifnum_to_if(udev, 0); - if (intf) - idesc = usb_altnum_to_altsetting(intf, pdev->valternate); -#endif - - if (!idesc) - return -EFAULT; - - /* Search video endpoint */ - pdev->vmax_packet_size = -1; - for (i = 0; i < idesc->desc.bNumEndpoints; i++) - if ((idesc->endpoint[i].desc.bEndpointAddress & 0xF) == pdev->vendpoint) { - pdev->vmax_packet_size = le16_to_cpu(idesc->endpoint[i].desc.wMaxPacketSize); - break; - } - - if (pdev->vmax_packet_size < 0 || pdev->vmax_packet_size > ISO_MAX_FRAME_SIZE) { - Err("Failed to find packet size for video endpoint in current alternate setting.\n"); - return -ENFILE; /* Odd error, that should be noticeable */ - } - - /* Set alternate interface */ - ret = 0; - Trace(TRACE_OPEN, "Setting alternate interface %d\n", pdev->valternate); - ret = usb_set_interface(pdev->udev, 0, pdev->valternate); - if (ret < 0) - return ret; - - for (i = 0; i < MAX_ISO_BUFS; i++) { - urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); - if (urb == NULL) { - Err("Failed to allocate urb %d\n", i); - ret = -ENOMEM; - break; - } - pdev->sbuf[i].urb = urb; - Trace(TRACE_MEMORY, "Allocated URB at 0x%p\n", urb); - } - if (ret) { - /* De-allocate in reverse order */ - while (i >= 0) { - if (pdev->sbuf[i].urb != NULL) - usb_free_urb(pdev->sbuf[i].urb); - pdev->sbuf[i].urb = NULL; - i--; - } - return ret; - } - - /* init URB structure */ - for (i = 0; i < MAX_ISO_BUFS; i++) { - urb = pdev->sbuf[i].urb; - - urb->interval = 1; // devik - urb->dev = udev; - urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint); - urb->transfer_flags = URB_ISO_ASAP; - urb->transfer_buffer = pdev->sbuf[i].data; - urb->transfer_buffer_length = ISO_BUFFER_SIZE; - urb->complete = pwc_isoc_handler; - urb->context = pdev; - urb->start_frame = 0; - urb->number_of_packets = ISO_FRAMES_PER_DESC; - for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { - urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; - urb->iso_frame_desc[j].length = pdev->vmax_packet_size; - } - } - - /* link */ - for (i = 0; i < MAX_ISO_BUFS; i++) { - ret = usb_submit_urb(pdev->sbuf[i].urb, GFP_KERNEL); - if (ret) - Err("isoc_init() submit_urb %d failed with error %d\n", i, ret); - else - Trace(TRACE_MEMORY, "URB 0x%p submitted.\n", pdev->sbuf[i].urb); - } - - /* All is done... */ - pdev->iso_init = 1; - Trace(TRACE_OPEN, "<< pwc_isoc_init()\n"); - return 0; -} - -static void pwc_isoc_cleanup(struct pwc_device *pdev) -{ - int i; - - Trace(TRACE_OPEN, ">> pwc_isoc_cleanup()\n"); - if (pdev == NULL) - return; - - /* Unlinking ISOC buffers one by one */ - for (i = 0; i < MAX_ISO_BUFS; i++) { - struct urb *urb; - - urb = pdev->sbuf[i].urb; - if (urb != 0) { - if (pdev->iso_init) { - Trace(TRACE_MEMORY, "Unlinking URB %p\n", urb); - usb_kill_urb(urb); - } - Trace(TRACE_MEMORY, "Freeing URB\n"); - usb_free_urb(urb); - pdev->sbuf[i].urb = NULL; - } - } - - /* Stop camera, but only if we are sure the camera is still there (unplug - is signalled by EPIPE) - */ - if (pdev->error_status && pdev->error_status != EPIPE) { - Trace(TRACE_OPEN, "Setting alternate interface 0.\n"); - usb_set_interface(pdev->udev, 0, 0); - } - - pdev->iso_init = 0; - Trace(TRACE_OPEN, "<< pwc_isoc_cleanup()\n"); -} - -int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot) -{ - int ret, start; - - /* Stop isoc stuff */ - pwc_isoc_cleanup(pdev); - /* Reset parameters */ - pwc_reset_buffers(pdev); - /* Try to set video mode... */ - start = ret = pwc_set_video_mode(pdev, width, height, new_fps, new_compression, new_snapshot); - if (ret) { - Trace(TRACE_FLOW, "pwc_set_video_mode attempt 1 failed.\n"); - /* That failed... restore old mode (we know that worked) */ - start = pwc_set_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot); - if (start) { - Trace(TRACE_FLOW, "pwc_set_video_mode attempt 2 failed.\n"); - } - } - if (start == 0) - { - if (pwc_isoc_init(pdev) < 0) - { - Info("Failed to restart ISOC transfers in pwc_try_video_mode.\n"); - ret = -EAGAIN; /* let's try again, who knows if it works a second time */ - } - } - pdev->drop_frames++; /* try to avoid garbage during switch */ - return ret; /* Return original error code */ -} - - -/***************************************************************************/ -/* Video4Linux functions */ - -static int pwc_video_open(struct inode *inode, struct file *file) -{ - int i; - struct video_device *vdev = video_devdata(file); - struct pwc_device *pdev; - - Trace(TRACE_OPEN, ">> video_open called(vdev = 0x%p).\n", vdev); - - pdev = (struct pwc_device *)vdev->priv; - if (pdev == NULL) - BUG(); - if (pdev->vopen) - return -EBUSY; - - down(&pdev->modlock); - if (!pdev->usb_init) { - Trace(TRACE_OPEN, "Doing first time initialization.\n"); - pdev->usb_init = 1; - - if (pwc_trace & TRACE_OPEN) - { - /* Query sensor type */ - const char *sensor_type = NULL; - int ret; - - ret = pwc_get_cmos_sensor(pdev, &i); - if (ret >= 0) - { - switch(i) { - case 0x00: sensor_type = "Hyundai CMOS sensor"; break; - case 0x20: sensor_type = "Sony CCD sensor + TDA8787"; break; - case 0x2E: sensor_type = "Sony CCD sensor + Exas 98L59"; break; - case 0x2F: sensor_type = "Sony CCD sensor + ADI 9804"; break; - case 0x30: sensor_type = "Sharp CCD sensor + TDA8787"; break; - case 0x3E: sensor_type = "Sharp CCD sensor + Exas 98L59"; break; - case 0x3F: sensor_type = "Sharp CCD sensor + ADI 9804"; break; - case 0x40: sensor_type = "UPA 1021 sensor"; break; - case 0x100: sensor_type = "VGA sensor"; break; - case 0x101: sensor_type = "PAL MR sensor"; break; - default: sensor_type = "unknown type of sensor"; break; - } - } - if (sensor_type != NULL) - Info("This %s camera is equipped with a %s (%d).\n", pdev->vdev->name, sensor_type, i); - } - } - - /* Turn on camera */ - if (power_save) { - i = pwc_camera_power(pdev, 1); - if (i < 0) - Info("Failed to restore power to the camera! (%d)\n", i); - } - /* Set LED on/off time */ - if (pwc_set_leds(pdev, led_on, led_off) < 0) - Info("Failed to set LED on/off time.\n"); - - pwc_construct(pdev); /* set min/max sizes correct */ - - /* So far, so good. Allocate memory. */ - i = pwc_allocate_buffers(pdev); - if (i < 0) { - Trace(TRACE_OPEN, "Failed to allocate buffer memory.\n"); - up(&pdev->modlock); - return i; - } - - /* Reset buffers & parameters */ - pwc_reset_buffers(pdev); - for (i = 0; i < default_mbufs; i++) - pdev->image_used[i] = 0; - pdev->vframe_count = 0; - pdev->vframes_dumped = 0; - pdev->vframes_error = 0; - pdev->visoc_errors = 0; - pdev->error_status = 0; -#if PWC_DEBUG - pdev->sequence = 0; -#endif - pwc_construct(pdev); /* set min/max sizes correct */ - - /* Set some defaults */ - pdev->vsnapshot = 0; - - /* Start iso pipe for video; first try the last used video size - (or the default one); if that fails try QCIF/10 or QSIF/10; - it that fails too, give up. - */ - i = pwc_set_video_mode(pdev, pwc_image_sizes[pdev->vsize].x, pwc_image_sizes[pdev->vsize].y, pdev->vframes, pdev->vcompression, 0); - if (i) { - Trace(TRACE_OPEN, "First attempt at set_video_mode failed.\n"); - if (pdev->type == 730 || pdev->type == 740 || pdev->type == 750) - i = pwc_set_video_mode(pdev, pwc_image_sizes[PSZ_QSIF].x, pwc_image_sizes[PSZ_QSIF].y, 10, pdev->vcompression, 0); - else - i = pwc_set_video_mode(pdev, pwc_image_sizes[PSZ_QCIF].x, pwc_image_sizes[PSZ_QCIF].y, 10, pdev->vcompression, 0); - } - if (i) { - Trace(TRACE_OPEN, "Second attempt at set_video_mode failed.\n"); - up(&pdev->modlock); - return i; - } - - i = pwc_isoc_init(pdev); - if (i) { - Trace(TRACE_OPEN, "Failed to init ISOC stuff = %d.\n", i); - up(&pdev->modlock); - return i; - } - - pdev->vopen++; - file->private_data = vdev; - up(&pdev->modlock); - Trace(TRACE_OPEN, "<< video_open() returns 0.\n"); - return 0; -} - -/* Note that all cleanup is done in the reverse order as in _open */ -static int pwc_video_close(struct inode *inode, struct file *file) -{ - struct video_device *vdev = file->private_data; - struct pwc_device *pdev; - int i; - - Trace(TRACE_OPEN, ">> video_close called(vdev = 0x%p).\n", vdev); - - pdev = (struct pwc_device *)vdev->priv; - if (pdev->vopen == 0) - Info("video_close() called on closed device?\n"); - - /* Dump statistics, but only if a reasonable amount of frames were - processed (to prevent endless log-entries in case of snap-shot - programs) - */ - if (pdev->vframe_count > 20) - Info("Closing video device: %d frames received, dumped %d frames, %d frames with errors.\n", pdev->vframe_count, pdev->vframes_dumped, pdev->vframes_error); - - switch (pdev->type) - { - case 675: - case 680: - case 690: - case 720: - case 730: - case 740: - case 750: -/* pwc_dec23_exit(); *//* Timon & Kiara */ - break; - case 645: - case 646: -/* pwc_dec1_exit(); */ - break; - } - - pwc_isoc_cleanup(pdev); - pwc_free_buffers(pdev); - - /* Turn off LEDS and power down camera, but only when not unplugged */ - if (pdev->error_status != EPIPE) { - /* Turn LEDs off */ - if (pwc_set_leds(pdev, 0, 0) < 0) - Info("Failed to set LED on/off time.\n"); - if (power_save) { - i = pwc_camera_power(pdev, 0); - if (i < 0) - Err("Failed to power down camera (%d)\n", i); - } - } - pdev->vopen = 0; - Trace(TRACE_OPEN, "<< video_close()\n"); - return 0; -} - -/* - * FIXME: what about two parallel reads ???? - * ANSWER: Not supported. You can't open the device more than once, - despite what the V4L1 interface says. First, I don't see - the need, second there's no mechanism of alerting the - 2nd/3rd/... process of events like changing image size. - And I don't see the point of blocking that for the - 2nd/3rd/... process. - In multi-threaded environments reading parallel from any - device is tricky anyhow. - */ - -static ssize_t pwc_video_read(struct file *file, char __user * buf, - size_t count, loff_t *ppos) -{ - struct video_device *vdev = file->private_data; - struct pwc_device *pdev; - int noblock = file->f_flags & O_NONBLOCK; - DECLARE_WAITQUEUE(wait, current); - int bytes_to_read; - - Trace(TRACE_READ, "video_read(0x%p, %p, %zu) called.\n", vdev, buf, count); - if (vdev == NULL) - return -EFAULT; - pdev = vdev->priv; - if (pdev == NULL) - return -EFAULT; - if (pdev->error_status) - return -pdev->error_status; /* Something happened, report what. */ - - /* In case we're doing partial reads, we don't have to wait for a frame */ - if (pdev->image_read_pos == 0) { - /* Do wait queueing according to the (doc)book */ - add_wait_queue(&pdev->frameq, &wait); - while (pdev->full_frames == NULL) { - /* Check for unplugged/etc. here */ - if (pdev->error_status) { - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - return -pdev->error_status ; - } - if (noblock) { - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - return -EWOULDBLOCK; - } - if (signal_pending(current)) { - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - return -ERESTARTSYS; - } - schedule(); - set_current_state(TASK_INTERRUPTIBLE); - } - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - - /* Decompress and release frame */ - if (pwc_handle_frame(pdev)) - return -EFAULT; - } - - Trace(TRACE_READ, "Copying data to user space.\n"); - if (pdev->vpalette == VIDEO_PALETTE_RAW) - bytes_to_read = pdev->frame_size; - else - bytes_to_read = pdev->view.size; - - /* copy bytes to user space; we allow for partial reads */ - if (count + pdev->image_read_pos > bytes_to_read) - count = bytes_to_read - pdev->image_read_pos; - if (copy_to_user(buf, pdev->image_ptr[pdev->fill_image] + pdev->image_read_pos, count)) - return -EFAULT; - pdev->image_read_pos += count; - if (pdev->image_read_pos >= bytes_to_read) { /* All data has been read */ - pdev->image_read_pos = 0; - pwc_next_image(pdev); - } - return count; -} - -static unsigned int pwc_video_poll(struct file *file, poll_table *wait) -{ - struct video_device *vdev = file->private_data; - struct pwc_device *pdev; - - if (vdev == NULL) - return -EFAULT; - pdev = vdev->priv; - if (pdev == NULL) - return -EFAULT; - - poll_wait(file, &pdev->frameq, wait); - if (pdev->error_status) - return POLLERR; - if (pdev->full_frames != NULL) /* we have frames waiting */ - return (POLLIN | POLLRDNORM); - - return 0; -} - -static int pwc_video_do_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, void *arg) -{ - struct video_device *vdev = file->private_data; - struct pwc_device *pdev; - DECLARE_WAITQUEUE(wait, current); - - if (vdev == NULL) - return -EFAULT; - pdev = vdev->priv; - if (pdev == NULL) - return -EFAULT; - - switch (cmd) { - /* Query cabapilities */ - case VIDIOCGCAP: - { - struct video_capability *caps = arg; - - strcpy(caps->name, vdev->name); - caps->type = VID_TYPE_CAPTURE; - caps->channels = 1; - caps->audios = 1; - caps->minwidth = pdev->view_min.x; - caps->minheight = pdev->view_min.y; - caps->maxwidth = pdev->view_max.x; - caps->maxheight = pdev->view_max.y; - break; - } - - /* Channel functions (simulate 1 channel) */ - case VIDIOCGCHAN: - { - struct video_channel *v = arg; - - if (v->channel != 0) - return -EINVAL; - v->flags = 0; - v->tuners = 0; - v->type = VIDEO_TYPE_CAMERA; - strcpy(v->name, "Webcam"); - return 0; - } - - case VIDIOCSCHAN: - { - /* The spec says the argument is an integer, but - the bttv driver uses a video_channel arg, which - makes sense becasue it also has the norm flag. - */ - struct video_channel *v = arg; - if (v->channel != 0) - return -EINVAL; - return 0; - } - - - /* Picture functions; contrast etc. */ - case VIDIOCGPICT: - { - struct video_picture *p = arg; - int val; - - val = pwc_get_brightness(pdev); - if (val >= 0) - p->brightness = val; - else - p->brightness = 0xffff; - val = pwc_get_contrast(pdev); - if (val >= 0) - p->contrast = val; - else - p->contrast = 0xffff; - /* Gamma, Whiteness, what's the difference? :) */ - val = pwc_get_gamma(pdev); - if (val >= 0) - p->whiteness = val; - else - p->whiteness = 0xffff; - val = pwc_get_saturation(pdev); - if (val >= 0) - p->colour = val; - else - p->colour = 0xffff; - p->depth = 24; - p->palette = pdev->vpalette; - p->hue = 0xFFFF; /* N/A */ - break; - } - - case VIDIOCSPICT: - { - struct video_picture *p = arg; - /* - * FIXME: Suppose we are mid read - ANSWER: No problem: the firmware of the camera - can handle brightness/contrast/etc - changes at _any_ time, and the palette - is used exactly once in the uncompress - routine. - */ - pwc_set_brightness(pdev, p->brightness); - pwc_set_contrast(pdev, p->contrast); - pwc_set_gamma(pdev, p->whiteness); - pwc_set_saturation(pdev, p->colour); - if (p->palette && p->palette != pdev->vpalette) { - switch (p->palette) { - case VIDEO_PALETTE_YUV420P: - case VIDEO_PALETTE_RAW: - pdev->vpalette = p->palette; - return pwc_try_video_mode(pdev, pdev->image.x, pdev->image.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot); - break; - default: - return -EINVAL; - break; - } - } - break; - } - - /* Window/size parameters */ - case VIDIOCGWIN: - { - struct video_window *vw = arg; - - vw->x = 0; - vw->y = 0; - vw->width = pdev->view.x; - vw->height = pdev->view.y; - vw->chromakey = 0; - vw->flags = (pdev->vframes << PWC_FPS_SHIFT) | - (pdev->vsnapshot ? PWC_FPS_SNAPSHOT : 0); - break; - } - - case VIDIOCSWIN: - { - struct video_window *vw = arg; - int fps, snapshot, ret; - - fps = (vw->flags & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT; - snapshot = vw->flags & PWC_FPS_SNAPSHOT; - if (fps == 0) - fps = pdev->vframes; - if (pdev->view.x == vw->width && pdev->view.y && fps == pdev->vframes && snapshot == pdev->vsnapshot) - return 0; - ret = pwc_try_video_mode(pdev, vw->width, vw->height, fps, pdev->vcompression, snapshot); - if (ret) - return ret; - break; - } - - /* We don't have overlay support (yet) */ - case VIDIOCGFBUF: - { - struct video_buffer *vb = arg; - - memset(vb,0,sizeof(*vb)); - break; - } - - /* mmap() functions */ - case VIDIOCGMBUF: - { - /* Tell the user program how much memory is needed for a mmap() */ - struct video_mbuf *vm = arg; - int i; - - memset(vm, 0, sizeof(*vm)); - vm->size = default_mbufs * pdev->len_per_image; - vm->frames = default_mbufs; /* double buffering should be enough for most applications */ - for (i = 0; i < default_mbufs; i++) - vm->offsets[i] = i * pdev->len_per_image; - break; - } - - case VIDIOCMCAPTURE: - { - /* Start capture into a given image buffer (called 'frame' in video_mmap structure) */ - struct video_mmap *vm = arg; - - Trace(TRACE_READ, "VIDIOCMCAPTURE: %dx%d, frame %d, format %d\n", vm->width, vm->height, vm->frame, vm->format); - if (vm->frame < 0 || vm->frame >= default_mbufs) - return -EINVAL; - - /* xawtv is nasty. It probes the available palettes - by setting a very small image size and trying - various palettes... The driver doesn't support - such small images, so I'm working around it. - */ - if (vm->format) - { - switch (vm->format) - { - case VIDEO_PALETTE_YUV420P: - case VIDEO_PALETTE_RAW: - break; - default: - return -EINVAL; - break; - } - } - - if ((vm->width != pdev->view.x || vm->height != pdev->view.y) && - (vm->width >= pdev->view_min.x && vm->height >= pdev->view_min.y)) { - int ret; - - Trace(TRACE_OPEN, "VIDIOCMCAPTURE: changing size to please xawtv :-(.\n"); - ret = pwc_try_video_mode(pdev, vm->width, vm->height, pdev->vframes, pdev->vcompression, pdev->vsnapshot); - if (ret) - return ret; - } /* ... size mismatch */ - - /* FIXME: should we lock here? */ - if (pdev->image_used[vm->frame]) - return -EBUSY; /* buffer wasn't available. Bummer */ - pdev->image_used[vm->frame] = 1; - - /* Okay, we're done here. In the SYNC call we wait until a - frame comes available, then expand image into the given - buffer. - In contrast to the CPiA cam the Philips cams deliver a - constant stream, almost like a grabber card. Also, - we have separate buffers for the rawdata and the image, - meaning we can nearly always expand into the requested buffer. - */ - Trace(TRACE_READ, "VIDIOCMCAPTURE done.\n"); - break; - } - - case VIDIOCSYNC: - { - /* The doc says: "Whenever a buffer is used it should - call VIDIOCSYNC to free this frame up and continue." - - The only odd thing about this whole procedure is - that MCAPTURE flags the buffer as "in use", and - SYNC immediately unmarks it, while it isn't - after SYNC that you know that the buffer actually - got filled! So you better not start a CAPTURE in - the same frame immediately (use double buffering). - This is not a problem for this cam, since it has - extra intermediate buffers, but a hardware - grabber card will then overwrite the buffer - you're working on. - */ - int *mbuf = arg; - int ret; - - Trace(TRACE_READ, "VIDIOCSYNC called (%d).\n", *mbuf); - - /* bounds check */ - if (*mbuf < 0 || *mbuf >= default_mbufs) - return -EINVAL; - /* check if this buffer was requested anyway */ - if (pdev->image_used[*mbuf] == 0) - return -EINVAL; - - /* Add ourselves to the frame wait-queue. - - FIXME: needs auditing for safety. - QUESTION: In what respect? I think that using the - frameq is safe now. - */ - add_wait_queue(&pdev->frameq, &wait); - while (pdev->full_frames == NULL) { - if (pdev->error_status) { - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - return -pdev->error_status; - } - - if (signal_pending(current)) { - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - return -ERESTARTSYS; - } - schedule(); - set_current_state(TASK_INTERRUPTIBLE); - } - remove_wait_queue(&pdev->frameq, &wait); - set_current_state(TASK_RUNNING); - - /* The frame is ready. Expand in the image buffer - requested by the user. I don't care if you - mmap() 5 buffers and request data in this order: - buffer 4 2 3 0 1 2 3 0 4 3 1 . . . - Grabber hardware may not be so forgiving. - */ - Trace(TRACE_READ, "VIDIOCSYNC: frame ready.\n"); - pdev->fill_image = *mbuf; /* tell in which buffer we want the image to be expanded */ - /* Decompress, etc */ - ret = pwc_handle_frame(pdev); - pdev->image_used[*mbuf] = 0; - if (ret) - return -EFAULT; - break; - } - - case VIDIOCGAUDIO: - { - struct video_audio *v = arg; - - strcpy(v->name, "Microphone"); - v->audio = -1; /* unknown audio minor */ - v->flags = 0; - v->mode = VIDEO_SOUND_MONO; - v->volume = 0; - v->bass = 0; - v->treble = 0; - v->balance = 0x8000; - v->step = 1; - break; - } - - case VIDIOCSAUDIO: - { - /* Dummy: nothing can be set */ - break; - } - - case VIDIOCGUNIT: - { - struct video_unit *vu = arg; - - vu->video = pdev->vdev->minor & 0x3F; - vu->audio = -1; /* not known yet */ - vu->vbi = -1; - vu->radio = -1; - vu->teletext = -1; - break; - } - default: - return pwc_ioctl(pdev, cmd, arg); - } /* ..switch */ - return 0; -} - -static int pwc_video_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - return video_usercopy(inode, file, cmd, arg, pwc_video_do_ioctl); -} - - -static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct video_device *vdev = file->private_data; - struct pwc_device *pdev; - unsigned long start = vma->vm_start; - unsigned long size = vma->vm_end-vma->vm_start; - unsigned long page, pos; - - Trace(TRACE_MEMORY, "mmap(0x%p, 0x%lx, %lu) called.\n", vdev, start, size); - pdev = vdev->priv; - - vma->vm_flags |= VM_IO; - - pos = (unsigned long)pdev->image_data; - while (size > 0) { - page = vmalloc_to_pfn((void *)pos); - if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) - return -EAGAIN; - - start += PAGE_SIZE; - pos += PAGE_SIZE; - if (size > PAGE_SIZE) - size -= PAGE_SIZE; - else - size = 0; - } - - return 0; -} - -/***************************************************************************/ -/* USB functions */ - -/* This function gets called when a new device is plugged in or the usb core - * is loaded. - */ - -static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id) -{ - struct usb_device *udev = interface_to_usbdev(intf); - struct pwc_device *pdev = NULL; - int vendor_id, product_id, type_id; - int i, hint; - int features = 0; - int video_nr = -1; /* default: use next available device */ - char serial_number[30], *name; - - /* Check if we can handle this device */ - Trace(TRACE_PROBE, "probe() called [%04X %04X], if %d\n", - le16_to_cpu(udev->descriptor.idVendor), - le16_to_cpu(udev->descriptor.idProduct), - intf->altsetting->desc.bInterfaceNumber); - - /* the interfaces are probed one by one. We are only interested in the - video interface (0) now. - Interface 1 is the Audio Control, and interface 2 Audio itself. - */ - if (intf->altsetting->desc.bInterfaceNumber > 0) - return -ENODEV; - - vendor_id = le16_to_cpu(udev->descriptor.idVendor); - product_id = le16_to_cpu(udev->descriptor.idProduct); - - if (vendor_id == 0x0471) { - switch (product_id) { - case 0x0302: - Info("Philips PCA645VC USB webcam detected.\n"); - name = "Philips 645 webcam"; - type_id = 645; - break; - case 0x0303: - Info("Philips PCA646VC USB webcam detected.\n"); - name = "Philips 646 webcam"; - type_id = 646; - break; - case 0x0304: - Info("Askey VC010 type 2 USB webcam detected.\n"); - name = "Askey VC010 webcam"; - type_id = 646; - break; - case 0x0307: - Info("Philips PCVC675K (Vesta) USB webcam detected.\n"); - name = "Philips 675 webcam"; - type_id = 675; - break; - case 0x0308: - Info("Philips PCVC680K (Vesta Pro) USB webcam detected.\n"); - name = "Philips 680 webcam"; - type_id = 680; - break; - case 0x030C: - Info("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n"); - name = "Philips 690 webcam"; - type_id = 690; - break; - case 0x0310: - Info("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n"); - name = "Philips 730 webcam"; - type_id = 730; - break; - case 0x0311: - Info("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n"); - name = "Philips 740 webcam"; - type_id = 740; - break; - case 0x0312: - Info("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n"); - name = "Philips 750 webcam"; - type_id = 750; - break; - case 0x0313: - Info("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n"); - name = "Philips 720K/40 webcam"; - type_id = 720; - break; - default: - return -ENODEV; - break; - } - } - else if (vendor_id == 0x069A) { - switch(product_id) { - case 0x0001: - Info("Askey VC010 type 1 USB webcam detected.\n"); - name = "Askey VC010 webcam"; - type_id = 645; - break; - default: - return -ENODEV; - break; - } - } - else if (vendor_id == 0x046d) { - switch(product_id) { - case 0x08b0: - Info("Logitech QuickCam Pro 3000 USB webcam detected.\n"); - name = "Logitech QuickCam Pro 3000"; - type_id = 740; /* CCD sensor */ - break; - case 0x08b1: - Info("Logitech QuickCam Notebook Pro USB webcam detected.\n"); - name = "Logitech QuickCam Notebook Pro"; - type_id = 740; /* CCD sensor */ - break; - case 0x08b2: - Info("Logitech QuickCam 4000 Pro USB webcam detected.\n"); - name = "Logitech QuickCam Pro 4000"; - type_id = 740; /* CCD sensor */ - break; - case 0x08b3: - Info("Logitech QuickCam Zoom USB webcam detected.\n"); - name = "Logitech QuickCam Zoom"; - type_id = 740; /* CCD sensor */ - break; - case 0x08B4: - Info("Logitech QuickCam Zoom (new model) USB webcam detected.\n"); - name = "Logitech QuickCam Zoom"; - type_id = 740; /* CCD sensor */ - break; - case 0x08b5: - Info("Logitech QuickCam Orbit/Sphere USB webcam detected.\n"); - name = "Logitech QuickCam Orbit"; - type_id = 740; /* CCD sensor */ - features |= FEATURE_MOTOR_PANTILT; - break; - case 0x08b6: - case 0x08b7: - case 0x08b8: - Info("Logitech QuickCam detected (reserved ID).\n"); - name = "Logitech QuickCam (res.)"; - type_id = 730; /* Assuming CMOS */ - break; - default: - return -ENODEV; - break; - } - } - else if (vendor_id == 0x055d) { - /* I don't know the difference between the C10 and the C30; - I suppose the difference is the sensor, but both cameras - work equally well with a type_id of 675 - */ - switch(product_id) { - case 0x9000: - Info("Samsung MPC-C10 USB webcam detected.\n"); - name = "Samsung MPC-C10"; - type_id = 675; - break; - case 0x9001: - Info("Samsung MPC-C30 USB webcam detected.\n"); - name = "Samsung MPC-C30"; - type_id = 675; - break; - default: - return -ENODEV; - break; - } - } - else if (vendor_id == 0x041e) { - switch(product_id) { - case 0x400c: - Info("Creative Labs Webcam 5 detected.\n"); - name = "Creative Labs Webcam 5"; - type_id = 730; - break; - case 0x4011: - Info("Creative Labs Webcam Pro Ex detected.\n"); - name = "Creative Labs Webcam Pro Ex"; - type_id = 740; - break; - default: - return -ENODEV; - break; - } - } - else if (vendor_id == 0x04cc) { - switch(product_id) { - case 0x8116: - Info("Sotec Afina Eye USB webcam detected.\n"); - name = "Sotec Afina Eye"; - type_id = 730; - break; - default: - return -ENODEV; - break; - } - } - else if (vendor_id == 0x06be) { - switch(product_id) { - case 0x8116: - /* This is essentially the same cam as the Sotec Afina Eye */ - Info("AME Co. Afina Eye USB webcam detected.\n"); - name = "AME Co. Afina Eye"; - type_id = 750; - break; - default: - return -ENODEV; - break; - } - - } - else if (vendor_id == 0x0d81) { - switch(product_id) { - case 0x1900: - Info("Visionite VCS-UC300 USB webcam detected.\n"); - name = "Visionite VCS-UC300"; - type_id = 740; /* CCD sensor */ - break; - case 0x1910: - Info("Visionite VCS-UM100 USB webcam detected.\n"); - name = "Visionite VCS-UM100"; - type_id = 730; /* CMOS sensor */ - break; - default: - return -ENODEV; - break; - } - } - else - return -ENODEV; /* Not any of the know types; but the list keeps growing. */ - - memset(serial_number, 0, 30); - usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29); - Trace(TRACE_PROBE, "Device serial number is %s\n", serial_number); - - if (udev->descriptor.bNumConfigurations > 1) - Info("Warning: more than 1 configuration available.\n"); - - /* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */ - pdev = kmalloc(sizeof(struct pwc_device), GFP_KERNEL); - if (pdev == NULL) { - Err("Oops, could not allocate memory for pwc_device.\n"); - return -ENOMEM; - } - memset(pdev, 0, sizeof(struct pwc_device)); - pdev->type = type_id; - pdev->vsize = default_size; - pdev->vframes = default_fps; - strcpy(pdev->serial, serial_number); - pdev->features = features; - if (vendor_id == 0x046D && product_id == 0x08B5) - { - /* Logitech QuickCam Orbit - The ranges have been determined experimentally; they may differ from cam to cam. - Also, the exact ranges left-right and up-down are different for my cam - */ - pdev->angle_range.pan_min = -7000; - pdev->angle_range.pan_max = 7000; - pdev->angle_range.tilt_min = -3000; - pdev->angle_range.tilt_max = 2500; - } - - init_MUTEX(&pdev->modlock); - spin_lock_init(&pdev->ptrlock); - - pdev->udev = udev; - init_waitqueue_head(&pdev->frameq); - pdev->vcompression = pwc_preferred_compression; - - /* Allocate video_device structure */ - pdev->vdev = video_device_alloc(); - if (pdev->vdev == 0) - { - Err("Err, cannot allocate video_device struture. Failing probe."); - kfree(pdev); - return -ENOMEM; - } - memcpy(pdev->vdev, &pwc_template, sizeof(pwc_template)); - strcpy(pdev->vdev->name, name); - pdev->vdev->owner = THIS_MODULE; - video_set_drvdata(pdev->vdev, pdev); - - pdev->release = le16_to_cpu(udev->descriptor.bcdDevice); - Trace(TRACE_PROBE, "Release: %04x\n", pdev->release); - - /* Now search device_hint[] table for a match, so we can hint a node number. */ - for (hint = 0; hint < MAX_DEV_HINTS; hint++) { - if (((device_hint[hint].type == -1) || (device_hint[hint].type == pdev->type)) && - (device_hint[hint].pdev == NULL)) { - /* so far, so good... try serial number */ - if ((device_hint[hint].serial_number[0] == '*') || !strcmp(device_hint[hint].serial_number, serial_number)) { - /* match! */ - video_nr = device_hint[hint].device_node; - Trace(TRACE_PROBE, "Found hint, will try to register as /dev/video%d\n", video_nr); - break; - } - } - } - - pdev->vdev->release = video_device_release; - i = video_register_device(pdev->vdev, VFL_TYPE_GRABBER, video_nr); - if (i < 0) { - Err("Failed to register as video device (%d).\n", i); - video_device_release(pdev->vdev); /* Drip... drip... drip... */ - kfree(pdev); /* Oops, no memory leaks please */ - return -EIO; - } - else { - Info("Registered as /dev/video%d.\n", pdev->vdev->minor & 0x3F); - } - - /* occupy slot */ - if (hint < MAX_DEV_HINTS) - device_hint[hint].pdev = pdev; - - Trace(TRACE_PROBE, "probe() function returning struct at 0x%p.\n", pdev); - usb_set_intfdata (intf, pdev); - return 0; -} - -/* The user janked out the cable... */ -static void usb_pwc_disconnect(struct usb_interface *intf) -{ - struct pwc_device *pdev; - int hint; - - lock_kernel(); - pdev = usb_get_intfdata (intf); - usb_set_intfdata (intf, NULL); - if (pdev == NULL) { - Err("pwc_disconnect() Called without private pointer.\n"); - goto disconnect_out; - } - if (pdev->udev == NULL) { - Err("pwc_disconnect() already called for %p\n", pdev); - goto disconnect_out; - } - if (pdev->udev != interface_to_usbdev(intf)) { - Err("pwc_disconnect() Woops: pointer mismatch udev/pdev.\n"); - goto disconnect_out; - } -#ifdef PWC_MAGIC - if (pdev->magic != PWC_MAGIC) { - Err("pwc_disconnect() Magic number failed. Consult your scrolls and try again.\n"); - goto disconnect_out; - } -#endif - - /* We got unplugged; this is signalled by an EPIPE error code */ - if (pdev->vopen) { - Info("Disconnected while webcam is in use!\n"); - pdev->error_status = EPIPE; - } - - /* Alert waiting processes */ - wake_up_interruptible(&pdev->frameq); - /* Wait until device is closed */ - while (pdev->vopen) - schedule(); - /* Device is now closed, so we can safely unregister it */ - Trace(TRACE_PROBE, "Unregistering video device in disconnect().\n"); - video_unregister_device(pdev->vdev); - - /* Free memory (don't set pdev to 0 just yet) */ - kfree(pdev); - -disconnect_out: - /* search device_hint[] table if we occupy a slot, by any chance */ - for (hint = 0; hint < MAX_DEV_HINTS; hint++) - if (device_hint[hint].pdev == pdev) - device_hint[hint].pdev = NULL; - - unlock_kernel(); -} - - -/* *grunt* We have to do atoi ourselves :-( */ -static int pwc_atoi(const char *s) -{ - int k = 0; - - k = 0; - while (*s != '\0' && *s >= '0' && *s <= '9') { - k = 10 * k + (*s - '0'); - s++; - } - return k; -} - - -/* - * Initialization code & module stuff - */ - -static char size[10]; -static int fps = 0; -static int fbufs = 0; -static int mbufs = 0; -static int trace = -1; -static int compression = -1; -static int leds[2] = { -1, -1 }; -static char *dev_hint[MAX_DEV_HINTS] = { }; - -module_param_string(size, size, sizeof(size), 0); -MODULE_PARM_DESC(size, "Initial image size. One of sqcif, qsif, qcif, sif, cif, vga"); -module_param(fps, int, 0000); -MODULE_PARM_DESC(fps, "Initial frames per second. Varies with model, useful range 5-30"); -module_param(fbufs, int, 0000); -MODULE_PARM_DESC(fbufs, "Number of internal frame buffers to reserve"); -module_param(mbufs, int, 0000); -MODULE_PARM_DESC(mbufs, "Number of external (mmap()ed) image buffers"); -module_param(trace, int, 0000); -MODULE_PARM_DESC(trace, "For debugging purposes"); -module_param(power_save, bool, 0000); -MODULE_PARM_DESC(power_save, "Turn power save feature in camera on or off"); -module_param(compression, int, 0000); -MODULE_PARM_DESC(compression, "Preferred compression quality. Range 0 (uncompressed) to 3 (high compression)"); -module_param_array(leds, int, NULL, 0000); -MODULE_PARM_DESC(leds, "LED on,off time in milliseconds"); -module_param_array(dev_hint, charp, NULL, 0000); -MODULE_PARM_DESC(dev_hint, "Device node hints"); - -MODULE_DESCRIPTION("Philips & OEM USB webcam driver"); -MODULE_AUTHOR("Luc Saillard <luc@saillard.org>"); -MODULE_LICENSE("GPL"); - -static int __init usb_pwc_init(void) -{ - int i, sz; - char *sizenames[PSZ_MAX] = { "sqcif", "qsif", "qcif", "sif", "cif", "vga" }; - - Info("Philips webcam module version " PWC_VERSION " loaded.\n"); - Info("Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.\n"); - Info("Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,\n"); - Info("the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.\n"); - - if (fps) { - if (fps < 4 || fps > 30) { - Err("Framerate out of bounds (4-30).\n"); - return -EINVAL; - } - default_fps = fps; - Info("Default framerate set to %d.\n", default_fps); - } - - if (size[0]) { - /* string; try matching with array */ - for (sz = 0; sz < PSZ_MAX; sz++) { - if (!strcmp(sizenames[sz], size)) { /* Found! */ - default_size = sz; - break; - } - } - if (sz == PSZ_MAX) { - Err("Size not recognized; try size=[sqcif | qsif | qcif | sif | cif | vga].\n"); - return -EINVAL; - } - Info("Default image size set to %s [%dx%d].\n", sizenames[default_size], pwc_image_sizes[default_size].x, pwc_image_sizes[default_size].y); - } - if (mbufs) { - if (mbufs < 1 || mbufs > MAX_IMAGES) { - Err("Illegal number of mmap() buffers; use a number between 1 and %d.\n", MAX_IMAGES); - return -EINVAL; - } - default_mbufs = mbufs; - Info("Number of image buffers set to %d.\n", default_mbufs); - } - if (fbufs) { - if (fbufs < 2 || fbufs > MAX_FRAMES) { - Err("Illegal number of frame buffers; use a number between 2 and %d.\n", MAX_FRAMES); - return -EINVAL; - } - default_fbufs = fbufs; - Info("Number of frame buffers set to %d.\n", default_fbufs); - } - if (trace >= 0) { - Info("Trace options: 0x%04x\n", trace); - pwc_trace = trace; - } - if (compression >= 0) { - if (compression > 3) { - Err("Invalid compression setting; use a number between 0 (uncompressed) and 3 (high).\n"); - return -EINVAL; - } - pwc_preferred_compression = compression; - Info("Preferred compression set to %d.\n", pwc_preferred_compression); - } - if (power_save) - Info("Enabling power save on open/close.\n"); - if (leds[0] >= 0) - led_on = leds[0]; - if (leds[1] >= 0) - led_off = leds[1]; - - /* Big device node whoopla. Basically, it allows you to assign a - device node (/dev/videoX) to a camera, based on its type - & serial number. The format is [type[.serialnumber]:]node. - - Any camera that isn't matched by these rules gets the next - available free device node. - */ - for (i = 0; i < MAX_DEV_HINTS; i++) { - char *s, *colon, *dot; - - /* This loop also initializes the array */ - device_hint[i].pdev = NULL; - s = dev_hint[i]; - if (s != NULL && *s != '\0') { - device_hint[i].type = -1; /* wildcard */ - strcpy(device_hint[i].serial_number, "*"); - - /* parse string: chop at ':' & '/' */ - colon = dot = s; - while (*colon != '\0' && *colon != ':') - colon++; - while (*dot != '\0' && *dot != '.') - dot++; - /* Few sanity checks */ - if (*dot != '\0' && dot > colon) { - Err("Malformed camera hint: the colon must be after the dot.\n"); - return -EINVAL; - } - - if (*colon == '\0') { - /* No colon */ - if (*dot != '\0') { - Err("Malformed camera hint: no colon + device node given.\n"); - return -EINVAL; - } - else { - /* No type or serial number specified, just a number. */ - device_hint[i].device_node = pwc_atoi(s); - } - } - else { - /* There's a colon, so we have at least a type and a device node */ - device_hint[i].type = pwc_atoi(s); - device_hint[i].device_node = pwc_atoi(colon + 1); - if (*dot != '\0') { - /* There's a serial number as well */ - int k; - - dot++; - k = 0; - while (*dot != ':' && k < 29) { - device_hint[i].serial_number[k++] = *dot; - dot++; - } - device_hint[i].serial_number[k] = '\0'; - } - } -#if PWC_DEBUG - Debug("device_hint[%d]:\n", i); - Debug(" type : %d\n", device_hint[i].type); - Debug(" serial# : %s\n", device_hint[i].serial_number); - Debug(" node : %d\n", device_hint[i].device_node); -#endif - } - else - device_hint[i].type = 0; /* not filled */ - } /* ..for MAX_DEV_HINTS */ - - Trace(TRACE_PROBE, "Registering driver at address 0x%p.\n", &pwc_driver); - return usb_register(&pwc_driver); -} - -static void __exit usb_pwc_exit(void) -{ - Trace(TRACE_MODULE, "Deregistering driver.\n"); - usb_deregister(&pwc_driver); - Info("Philips webcam module removed.\n"); -} - -module_init(usb_pwc_init); -module_exit(usb_pwc_exit); - |