--- /dev/null
+/* Linux driver for Philips webcam
+ USB and Video4Linux interface part.
+ (C) 1999-2004 Nemosoft Unv.
+ (C) 2004-2006 Luc Saillard (luc@saillard.org)
+ (C) 2011 Hans de Goede <hdegoede@redhat.com>
+
+ 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 (member of pwc_dev)
+ 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
+ - Pham Thanh Nam: webcam snapshot button as an event input device
+*/
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+#include <linux/usb/input.h>
+#endif
+#include <linux/vmalloc.h>
+#include <asm/io.h>
+#include <linux/kernel.h> /* simple_strtol() */
+
+#include "pwc.h"
+#include "pwc-kiara.h"
+#include "pwc-timon.h"
+#include "pwc-dec23.h"
+#include "pwc-dec1.h"
+
+/* Function prototypes and driver templates */
+
+/* hotplug device table support */
+static const 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) }, /* Philips ToUcam PRO II */
+ { USB_DEVICE(0x0471, 0x0312) },
+ { USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */
+ { USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC PC Camera */
+ { 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) }, /* Cisco VT Camera */
+ { USB_DEVICE(0x046D, 0x08B7) }, /* Logitech ViewPort AV 100 */
+ { USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */
+ { USB_DEVICE(0x055D, 0x9000) }, /* Samsung MPC-C10 */
+ { USB_DEVICE(0x055D, 0x9001) }, /* Samsung MPC-C30 */
+ { USB_DEVICE(0x055D, 0x9002) }, /* Samsung SNC-35E (Ver3.0) */
+ { 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 void pwc_isoc_cleanup(struct pwc_device *pdev);
+
+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
+
+#ifdef CONFIG_USB_PWC_DEBUG
+ int pwc_trace = PWC_DEBUG_LEVEL;
+#endif
+static int power_save = -1;
+static int leds[2] = { 100, 0 };
+
+/***/
+
+static const struct v4l2_file_operations pwc_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .read = vb2_fop_read,
+ .poll = vb2_fop_poll,
+ .mmap = vb2_fop_mmap,
+ .unlocked_ioctl = video_ioctl2,
+};
+static struct video_device pwc_template = {
+ .name = "Philips Webcam", /* Filled in later */
+ .release = video_device_release_empty,
+ .fops = &pwc_fops,
+ .ioctl_ops = &pwc_ioctl_ops,
+};
+
+/***************************************************************************/
+/* Private functions */
+
+static struct pwc_frame_buf *pwc_get_next_fill_buf(struct pwc_device *pdev)
+{
+ unsigned long flags = 0;
+ struct pwc_frame_buf *buf = NULL;
+
+ spin_lock_irqsave(&pdev->queued_bufs_lock, flags);
+ if (list_empty(&pdev->queued_bufs))
+ goto leave;
+
+ buf = list_entry(pdev->queued_bufs.next, struct pwc_frame_buf, list);
+ list_del(&buf->list);
+leave:
+ spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags);
+ return buf;
+}
+
+static void pwc_snapshot_button(struct pwc_device *pdev, int down)
+{
+ if (down) {
+ PWC_TRACE("Snapshot button pressed.\n");
+ } else {
+ PWC_TRACE("Snapshot button released.\n");
+ }
+
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+ if (pdev->button_dev) {
+ input_report_key(pdev->button_dev, KEY_CAMERA, down);
+ input_sync(pdev->button_dev);
+ }
+#endif
+}
+
+static void pwc_frame_complete(struct pwc_device *pdev)
+{
+ struct pwc_frame_buf *fbuf = pdev->fill_buf;
+
+ /* 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) {
+ PWC_TRACE("Hyundai CMOS sensor bug. Dropping frame.\n");
+ pdev->drop_frames += 2;
+ }
+ if ((ptr[0] ^ pdev->vmirror) & 0x01) {
+ pwc_snapshot_button(pdev, ptr[0] & 0x01);
+ }
+ if ((ptr[0] ^ pdev->vmirror) & 0x02) {
+ if (ptr[0] & 0x02)
+ PWC_TRACE("Image is mirrored.\n");
+ else
+ PWC_TRACE("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++;
+ } else if (pdev->type == 740 || pdev->type == 720) {
+ unsigned char *ptr = (unsigned char *)fbuf->data;
+ if ((ptr[0] ^ pdev->vmirror) & 0x01) {
+ pwc_snapshot_button(pdev, ptr[0] & 0x01);
+ }
+ pdev->vmirror = ptr[0] & 0x03;
+ }
+
+ /* In case we were instructed to drop the frame, do so silently. */
+ if (pdev->drop_frames > 0) {
+ pdev->drop_frames--;
+ } else {
+ /* Check for underflow first */
+ if (fbuf->filled < pdev->frame_total_size) {
+ PWC_DEBUG_FLOW("Frame buffer underflow (%d bytes);"
+ " discarded.\n", fbuf->filled);
+ } else {
+ fbuf->vb.v4l2_buf.field = V4L2_FIELD_NONE;
+ fbuf->vb.v4l2_buf.sequence = pdev->vframe_count;
+ vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE);
+ pdev->fill_buf = NULL;
+ pdev->vsync = 0;
+ }
+ } /* !drop_frames */
+ pdev->vframe_count++;
+}
+
+/* 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 pwc_device *pdev = (struct pwc_device *)urb->context;
+ int i, fst, flen;
+ unsigned char *iso_buf = NULL;
+
+ if (urb->status == -ENOENT || urb->status == -ECONNRESET ||
+ urb->status == -ESHUTDOWN) {
+ PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a");
+ return;
+ }
+
+ if (pdev->fill_buf == NULL)
+ pdev->fill_buf = pwc_get_next_fill_buf(pdev);
+
+ if (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 -ETIME: errmsg = "Device does not respond"; break;
+ }
+ PWC_ERROR("pwc_isoc_handler() called with status %d [%s].\n",
+ urb->status, errmsg);
+ /* Give up after a number of contiguous errors */
+ if (++pdev->visoc_errors > MAX_ISOC_ERRORS)
+ {
+ PWC_ERROR("Too many ISOC errors, bailing out.\n");
+ if (pdev->fill_buf) {
+ vb2_buffer_done(&pdev->fill_buf->vb,
+ VB2_BUF_STATE_ERROR);
+ pdev->fill_buf = NULL;
+ }
+ }
+ pdev->vsync = 0; /* Drop the current frame */
+ goto handler_end;
+ }
+
+ /* 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) {
+ PWC_ERROR("Iso frame %d has error %d\n", i, fst);
+ continue;
+ }
+ if (flen > 0 && pdev->vsync) {
+ struct pwc_frame_buf *fbuf = pdev->fill_buf;
+
+ if (pdev->vsync == 1) {
+ v4l2_get_timestamp(
+ &fbuf->vb.v4l2_buf.timestamp);
+ pdev->vsync = 2;
+ }
+
+ if (flen + fbuf->filled > pdev->frame_total_size) {
+ PWC_ERROR("Frame overflow (%d > %d)\n",
+ flen + fbuf->filled,
+ pdev->frame_total_size);
+ pdev->vsync = 0; /* Let's wait for an EOF */
+ } else {
+ memcpy(fbuf->data + fbuf->filled, iso_buf,
+ flen);
+ fbuf->filled += flen;
+ }
+ }
+ if (flen < pdev->vlast_packet_size) {
+ /* Shorter packet... end of frame */
+ if (pdev->vsync == 2)
+ pwc_frame_complete(pdev);
+ if (pdev->fill_buf == NULL)
+ pdev->fill_buf = pwc_get_next_fill_buf(pdev);
+ if (pdev->fill_buf) {
+ pdev->fill_buf->filled = 0;
+ pdev->vsync = 1;
+ }
+ }
+ pdev->vlast_packet_size = flen;
+ }
+
+handler_end:
+ i = usb_submit_urb(urb, GFP_ATOMIC);
+ if (i != 0)
+ PWC_ERROR("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i);
+}
+
+/* Both v4l2_lock and vb_queue_lock should be locked when calling this */
+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;
+ int compression = 0; /* 0..3 = uncompressed..high */
+
+ pdev->vsync = 0;
+ pdev->vlast_packet_size = 0;
+ pdev->fill_buf = NULL;
+ pdev->vframe_count = 0;
+ pdev->visoc_errors = 0;
+ udev = pdev->udev;
+
+retry:
+ /* We first try with low compression and then retry with a higher
+ compression setting if there is not enough bandwidth. */
+ ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt,
+ pdev->vframes, &compression, 1);
+
+ /* Get the current alternate interface, adjust packet size */
+ intf = usb_ifnum_to_if(udev, 0);
+ if (intf)
+ idesc = usb_altnum_to_altsetting(intf, pdev->valternate);
+ if (!idesc)
+ return -EIO;
+
+ /* 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) {
+ PWC_ERROR("Failed to find packet size for video endpoint in current alternate setting.\n");
+ return -ENFILE; /* Odd error, that should be noticeable */
+ }
+
+ /* Set alternate interface */
+ PWC_DEBUG_OPEN("Setting alternate interface %d\n", pdev->valternate);
+ ret = usb_set_interface(pdev->udev, 0, pdev->valternate);
+ if (ret == -ENOSPC && compression < 3) {
+ compression++;
+ goto retry;
+ }
+ if (ret < 0)
+ return ret;
+
+ /* Allocate and init Isochronuous urbs */
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
+ if (urb == NULL) {
+ PWC_ERROR("Failed to allocate urb %d\n", i);
+ pwc_isoc_cleanup(pdev);
+ return -ENOMEM;
+ }
+ pdev->urbs[i] = urb;
+ PWC_DEBUG_MEMORY("Allocated URB at 0x%p\n", urb);
+
+ urb->interval = 1; // devik
+ urb->dev = udev;
+ urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint);
+ urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+ urb->transfer_buffer = usb_alloc_coherent(udev,
+ ISO_BUFFER_SIZE,
+ GFP_KERNEL,
+ &urb->transfer_dma);
+ if (urb->transfer_buffer == NULL) {
+ PWC_ERROR("Failed to allocate urb buffer %d\n", i);
+ pwc_isoc_cleanup(pdev);
+ return -ENOMEM;
+ }
+ 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->urbs[i], GFP_KERNEL);
+ if (ret == -ENOSPC && compression < 3) {
+ compression++;
+ pwc_isoc_cleanup(pdev);
+ goto retry;
+ }
+ if (ret) {
+ PWC_ERROR("isoc_init() submit_urb %d failed with error %d\n", i, ret);
+ pwc_isoc_cleanup(pdev);
+ return ret;
+ }
+ PWC_DEBUG_MEMORY("URB 0x%p submitted.\n", pdev->urbs[i]);
+ }
+
+ /* All is done... */
+ PWC_DEBUG_OPEN("<< pwc_isoc_init()\n");
+ return 0;
+}
+
+static void pwc_iso_stop(struct pwc_device *pdev)
+{
+ int i;
+
+ /* Unlinking ISOC buffers one by one */
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (pdev->urbs[i]) {
+ PWC_DEBUG_MEMORY("Unlinking URB %p\n", pdev->urbs[i]);
+ usb_kill_urb(pdev->urbs[i]);
+ }
+ }
+}
+
+static void pwc_iso_free(struct pwc_device *pdev)
+{
+ int i;
+
+ /* Freeing ISOC buffers one by one */
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (pdev->urbs[i]) {
+ PWC_DEBUG_MEMORY("Freeing URB\n");
+ if (pdev->urbs[i]->transfer_buffer) {
+ usb_free_coherent(pdev->udev,
+ pdev->urbs[i]->transfer_buffer_length,
+ pdev->urbs[i]->transfer_buffer,
+ pdev->urbs[i]->transfer_dma);
+ }
+ usb_free_urb(pdev->urbs[i]);
+ pdev->urbs[i] = NULL;
+ }
+ }
+}
+
+/* Both v4l2_lock and vb_queue_lock should be locked when calling this */
+static void pwc_isoc_cleanup(struct pwc_device *pdev)
+{
+ PWC_DEBUG_OPEN(">> pwc_isoc_cleanup()\n");
+
+ pwc_iso_stop(pdev);
+ pwc_iso_free(pdev);
+ usb_set_interface(pdev->udev, 0, 0);
+
+ PWC_DEBUG_OPEN("<< pwc_isoc_cleanup()\n");
+}
+
+/* Must be called with vb_queue_lock hold */
+static void pwc_cleanup_queued_bufs(struct pwc_device *pdev,
+ enum vb2_buffer_state state)
+{
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&pdev->queued_bufs_lock, flags);
+ while (!list_empty(&pdev->queued_bufs)) {
+ struct pwc_frame_buf *buf;
+
+ buf = list_entry(pdev->queued_bufs.next, struct pwc_frame_buf,
+ list);
+ list_del(&buf->list);
+ vb2_buffer_done(&buf->vb, state);
+ }
+ spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags);
+}
+
+#ifdef CONFIG_USB_PWC_DEBUG
+static const char *pwc_sensor_type_to_string(unsigned int sensor_type)
+{
+ switch(sensor_type) {
+ case 0x00:
+ return "Hyundai CMOS sensor";
+ case 0x20:
+ return "Sony CCD sensor + TDA8787";
+ case 0x2E:
+ return "Sony CCD sensor + Exas 98L59";
+ case 0x2F:
+ return "Sony CCD sensor + ADI 9804";
+ case 0x30:
+ return "Sharp CCD sensor + TDA8787";
+ case 0x3E:
+ return "Sharp CCD sensor + Exas 98L59";
+ case 0x3F:
+ return "Sharp CCD sensor + ADI 9804";
+ case 0x40:
+ return "UPA 1021 sensor";
+ case 0x100:
+ return "VGA sensor";
+ case 0x101:
+ return "PAL MR sensor";
+ default:
+ return "unknown type of sensor";
+ }
+}
+#endif
+
+/***************************************************************************/
+/* Video4Linux functions */
+
+static void pwc_video_release(struct v4l2_device *v)
+{
+ struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev);
+
+ v4l2_ctrl_handler_free(&pdev->ctrl_handler);
+ v4l2_device_unregister(&pdev->v4l2_dev);
+ kfree(pdev->ctrl_buf);
+ kfree(pdev);
+}
+
+/***************************************************************************/
+/* Videobuf2 operations */
+
+static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct pwc_device *pdev = vb2_get_drv_priv(vq);
+ int size;
+
+ if (*nbuffers < MIN_FRAMES)
+ *nbuffers = MIN_FRAMES;
+ else if (*nbuffers > MAX_FRAMES)
+ *nbuffers = MAX_FRAMES;
+
+ *nplanes = 1;
+
+ size = pwc_get_size(pdev, MAX_WIDTH, MAX_HEIGHT);
+ sizes[0] = PAGE_ALIGN(pwc_image_sizes[size][0] *
+ pwc_image_sizes[size][1] * 3 / 2);
+
+ return 0;
+}
+
+static int buffer_init(struct vb2_buffer *vb)
+{
+ struct pwc_frame_buf *buf = container_of(vb, struct pwc_frame_buf, vb);
+
+ /* need vmalloc since frame buffer > 128K */
+ buf->data = vzalloc(PWC_FRAME_SIZE);
+ if (buf->data == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int buffer_prepare(struct vb2_buffer *vb)
+{
+ struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
+
+ /* Don't allow queing new buffers after device disconnection */
+ if (!pdev->udev)
+ return -ENODEV;
+
+ return 0;
+}
+
+static void buffer_finish(struct vb2_buffer *vb)
+{
+ struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
+ struct pwc_frame_buf *buf = container_of(vb, struct pwc_frame_buf, vb);
+
+ if (vb->state == VB2_BUF_STATE_DONE) {
+ /*
+ * Application has called dqbuf and is getting back a buffer
+ * we've filled, take the pwc data we've stored in buf->data
+ * and decompress it into a usable format, storing the result
+ * in the vb2_buffer.
+ */
+ pwc_decompress(pdev, buf);
+ }
+}
+
+static void buffer_cleanup(struct vb2_buffer *vb)
+{
+ struct pwc_frame_buf *buf = container_of(vb, struct pwc_frame_buf, vb);
+
+ vfree(buf->data);
+}
+
+static void buffer_queue(struct vb2_buffer *vb)
+{
+ struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue);
+ struct pwc_frame_buf *buf = container_of(vb, struct pwc_frame_buf, vb);
+ unsigned long flags = 0;
+
+ /* Check the device has not disconnected between prep and queuing */
+ if (!pdev->udev) {
+ vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
+ return;
+ }
+
+ spin_lock_irqsave(&pdev->queued_bufs_lock, flags);
+ list_add_tail(&buf->list, &pdev->queued_bufs);
+ spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags);
+}
+
+static int start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct pwc_device *pdev = vb2_get_drv_priv(vq);
+ int r;
+
+ if (!pdev->udev)
+ return -ENODEV;
+
+ if (mutex_lock_interruptible(&pdev->v4l2_lock))
+ return -ERESTARTSYS;
+ /* Turn on camera and set LEDS on */
+ pwc_camera_power(pdev, 1);
+ pwc_set_leds(pdev, leds[0], leds[1]);
+
+ r = pwc_isoc_init(pdev);
+ if (r) {
+ /* If we failed turn camera and LEDS back off */
+ pwc_set_leds(pdev, 0, 0);
+ pwc_camera_power(pdev, 0);
+ /* And cleanup any queued bufs!! */
+ pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED);
+ }
+ mutex_unlock(&pdev->v4l2_lock);
+
+ return r;
+}
+
+static void stop_streaming(struct vb2_queue *vq)
+{
+ struct pwc_device *pdev = vb2_get_drv_priv(vq);
+
+ mutex_lock(&pdev->v4l2_lock);
+ if (pdev->udev) {
+ pwc_set_leds(pdev, 0, 0);
+ pwc_camera_power(pdev, 0);
+ pwc_isoc_cleanup(pdev);
+ }
+
+ pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_ERROR);
+ if (pdev->fill_buf)
+ vb2_buffer_done(&pdev->fill_buf->vb, VB2_BUF_STATE_ERROR);
+ mutex_unlock(&pdev->v4l2_lock);
+}
+
+static struct vb2_ops pwc_vb_queue_ops = {
+ .queue_setup = queue_setup,
+ .buf_init = buffer_init,
+ .buf_prepare = buffer_prepare,
+ .buf_finish = buffer_finish,
+ .buf_cleanup = buffer_cleanup,
+ .buf_queue = buffer_queue,
+ .start_streaming = start_streaming,
+ .stop_streaming = stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+/***************************************************************************/
+/* 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 rc;
+ int features = 0;
+ int compression = 0;
+ int my_power_save = power_save;
+ char serial_number[30], *name;
+
+ vendor_id = le16_to_cpu(udev->descriptor.idVendor);
+ product_id = le16_to_cpu(udev->descriptor.idProduct);
+
+ /* Check if we can handle this device */
+ PWC_DEBUG_PROBE("probe() called [%04X %04X], if %d\n",
+ vendor_id, product_id,
+ 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;
+
+ if (vendor_id == 0x0471) {
+ switch (product_id) {
+ case 0x0302:
+ PWC_INFO("Philips PCA645VC USB webcam detected.\n");
+ name = "Philips 645 webcam";
+ type_id = 645;
+ break;
+ case 0x0303:
+ PWC_INFO("Philips PCA646VC USB webcam detected.\n");
+ name = "Philips 646 webcam";
+ type_id = 646;
+ break;
+ case 0x0304:
+ PWC_INFO("Askey VC010 type 2 USB webcam detected.\n");
+ name = "Askey VC010 webcam";
+ type_id = 646;
+ break;
+ case 0x0307:
+ PWC_INFO("Philips PCVC675K (Vesta) USB webcam detected.\n");
+ name = "Philips 675 webcam";
+ type_id = 675;
+ break;
+ case 0x0308:
+ PWC_INFO("Philips PCVC680K (Vesta Pro) USB webcam detected.\n");
+ name = "Philips 680 webcam";
+ type_id = 680;
+ break;
+ case 0x030C:
+ PWC_INFO("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n");
+ name = "Philips 690 webcam";
+ type_id = 690;
+ break;
+ case 0x0310:
+ PWC_INFO("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n");
+ name = "Philips 730 webcam";
+ type_id = 730;
+ break;
+ case 0x0311:
+ PWC_INFO("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n");
+ name = "Philips 740 webcam";
+ type_id = 740;
+ break;
+ case 0x0312:
+ PWC_INFO("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n");
+ name = "Philips 750 webcam";
+ type_id = 750;
+ break;
+ case 0x0313:
+ PWC_INFO("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n");
+ name = "Philips 720K/40 webcam";
+ type_id = 720;
+ break;
+ case 0x0329:
+ PWC_INFO("Philips SPC 900NC USB webcam detected.\n");
+ name = "Philips SPC 900NC webcam";
+ type_id = 740;
+ break;
+ default:
+ return -ENODEV;
+ break;
+ }
+ }
+ else if (vendor_id == 0x069A) {
+ switch(product_id) {
+ case 0x0001:
+ PWC_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:
+ PWC_INFO("Logitech QuickCam Pro 3000 USB webcam detected.\n");
+ name = "Logitech QuickCam Pro 3000";
+ type_id = 740; /* CCD sensor */
+ break;
+ case 0x08b1:
+ PWC_INFO("Logitech QuickCam Notebook Pro USB webcam detected.\n");
+ name = "Logitech QuickCam Notebook Pro";
+ type_id = 740; /* CCD sensor */
+ break;
+ case 0x08b2:
+ PWC_INFO("Logitech QuickCam 4000 Pro USB webcam detected.\n");
+ name = "Logitech QuickCam Pro 4000";
+ type_id = 740; /* CCD sensor */
+ if (my_power_save == -1)
+ my_power_save = 1;
+ break;
+ case 0x08b3:
+ PWC_INFO("Logitech QuickCam Zoom USB webcam detected.\n");
+ name = "Logitech QuickCam Zoom";
+ type_id = 740; /* CCD sensor */
+ break;
+ case 0x08B4:
+ PWC_INFO("Logitech QuickCam Zoom (new model) USB webcam detected.\n");
+ name = "Logitech QuickCam Zoom";
+ type_id = 740; /* CCD sensor */
+ if (my_power_save == -1)
+ my_power_save = 1;
+ break;
+ case 0x08b5:
+ PWC_INFO("Logitech QuickCam Orbit/Sphere USB webcam detected.\n");
+ name = "Logitech QuickCam Orbit";
+ type_id = 740; /* CCD sensor */
+ if (my_power_save == -1)
+ my_power_save = 1;
+ features |= FEATURE_MOTOR_PANTILT;
+ break;
+ case 0x08b6:
+ PWC_INFO("Logitech/Cisco VT Camera webcam detected.\n");
+ name = "Cisco VT Camera";
+ type_id = 740; /* CCD sensor */
+ break;
+ case 0x08b7:
+ PWC_INFO("Logitech ViewPort AV 100 webcam detected.\n");
+ name = "Logitech ViewPort AV 100";
+ type_id = 740; /* CCD sensor */
+ break;
+ case 0x08b8: /* Where this released? */
+ PWC_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:
+ PWC_INFO("Samsung MPC-C10 USB webcam detected.\n");
+ name = "Samsung MPC-C10";
+ type_id = 675;
+ break;
+ case 0x9001:
+ PWC_INFO("Samsung MPC-C30 USB webcam detected.\n");
+ name = "Samsung MPC-C30";
+ type_id = 675;
+ break;
+ case 0x9002:
+ PWC_INFO("Samsung SNC-35E (v3.0) USB webcam detected.\n");
+ name = "Samsung MPC-C30";
+ type_id = 740;
+ break;
+ default:
+ return -ENODEV;
+ break;
+ }
+ }
+ else if (vendor_id == 0x041e) {
+ switch(product_id) {
+ case 0x400c:
+ PWC_INFO("Creative Labs Webcam 5 detected.\n");
+ name = "Creative Labs Webcam 5";
+ type_id = 730;
+ if (my_power_save == -1)
+ my_power_save = 1;
+ break;
+ case 0x4011:
+ PWC_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:
+ PWC_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 */
+ PWC_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:
+ PWC_INFO("Visionite VCS-UC300 USB webcam detected.\n");
+ name = "Visionite VCS-UC300";
+ type_id = 740; /* CCD sensor */
+ break;
+ case 0x1910:
+ PWC_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. */
+
+ if (my_power_save == -1)
+ my_power_save = 0;
+
+ memset(serial_number, 0, 30);
+ usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29);
+ PWC_DEBUG_PROBE("Device serial number is %s\n", serial_number);
+
+ if (udev->descriptor.bNumConfigurations > 1)
+ PWC_WARNING("Warning: more than 1 configuration available.\n");
+
+ /* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */
+ pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL);
+ if (pdev == NULL) {
+ PWC_ERROR("Oops, could not allocate memory for pwc_device.\n");
+ return -ENOMEM;
+ }
+ pdev->type = type_id;
+ pdev->features = features;
+ pwc_construct(pdev); /* set min/max sizes correct */
+
+ mutex_init(&pdev->v4l2_lock);
+ mutex_init(&pdev->vb_queue_lock);
+ spin_lock_init(&pdev->queued_bufs_lock);
+ INIT_LIST_HEAD(&pdev->queued_bufs);
+
+ pdev->udev = udev;
+ pdev->power_save = my_power_save;
+
+ /* Init videobuf2 queue structure */
+ pdev->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ pdev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
+ pdev->vb_queue.drv_priv = pdev;
+ pdev->vb_queue.buf_struct_size = sizeof(struct pwc_frame_buf);
+ pdev->vb_queue.ops = &pwc_vb_queue_ops;
+ pdev->vb_queue.mem_ops = &vb2_vmalloc_memops;
+ pdev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ rc = vb2_queue_init(&pdev->vb_queue);
+ if (rc < 0) {
+ PWC_ERROR("Oops, could not initialize vb2 queue.\n");
+ goto err_free_mem;
+ }
+
+ /* Init video_device structure */
+ pdev->vdev = pwc_template;
+ strcpy(pdev->vdev.name, name);
+ pdev->vdev.queue = &pdev->vb_queue;
+ pdev->vdev.queue->lock = &pdev->vb_queue_lock;
+ video_set_drvdata(&pdev->vdev, pdev);
+
+ pdev->release = le16_to_cpu(udev->descriptor.bcdDevice);
+ PWC_DEBUG_PROBE("Release: %04x\n", pdev->release);
+
+ /* Allocate USB command buffers */
+ pdev->ctrl_buf = kmalloc(sizeof(pdev->cmd_buf), GFP_KERNEL);
+ if (!pdev->ctrl_buf) {
+ PWC_ERROR("Oops, could not allocate memory for pwc_device.\n");
+ rc = -ENOMEM;
+ goto err_free_mem;
+ }
+
+#ifdef CONFIG_USB_PWC_DEBUG
+ /* Query sensor type */
+ if (pwc_get_cmos_sensor(pdev, &rc) >= 0) {
+ PWC_DEBUG_OPEN("This %s camera is equipped with a %s (%d).\n",
+ pdev->vdev.name,
+ pwc_sensor_type_to_string(rc), rc);
+ }
+#endif
+
+ /* Set the leds off */
+ pwc_set_leds(pdev, 0, 0);
+
+ /* Setup initial videomode */
+ rc = pwc_set_video_mode(pdev, MAX_WIDTH, MAX_HEIGHT,
+ V4L2_PIX_FMT_YUV420, 30, &compression, 1);
+ if (rc)
+ goto err_free_mem;
+
+ /* Register controls (and read default values from camera */
+ rc = pwc_init_controls(pdev);
+ if (rc) {
+ PWC_ERROR("Failed to register v4l2 controls (%d).\n", rc);
+ goto err_free_mem;
+ }
+
+ /* And powerdown the camera until streaming starts */
+ pwc_camera_power(pdev, 0);
+
+ /* Register the v4l2_device structure */
+ pdev->v4l2_dev.release = pwc_video_release;
+ rc = v4l2_device_register(&intf->dev, &pdev->v4l2_dev);
+ if (rc) {
+ PWC_ERROR("Failed to register v4l2-device (%d).\n", rc);
+ goto err_free_controls;
+ }
+
+ pdev->v4l2_dev.ctrl_handler = &pdev->ctrl_handler;
+ pdev->vdev.v4l2_dev = &pdev->v4l2_dev;
+ pdev->vdev.lock = &pdev->v4l2_lock;
+
+ rc = video_register_device(&pdev->vdev, VFL_TYPE_GRABBER, -1);
+ if (rc < 0) {
+ PWC_ERROR("Failed to register as video device (%d).\n", rc);
+ goto err_unregister_v4l2_dev;
+ }
+ PWC_INFO("Registered as %s.\n", video_device_node_name(&pdev->vdev));
+
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+ /* register webcam snapshot button input device */
+ pdev->button_dev = input_allocate_device();
+ if (!pdev->button_dev) {
+ rc = -ENOMEM;
+ goto err_video_unreg;
+ }
+
+ usb_make_path(udev, pdev->button_phys, sizeof(pdev->button_phys));
+ strlcat(pdev->button_phys, "/input0", sizeof(pdev->button_phys));
+
+ pdev->button_dev->name = "PWC snapshot button";
+ pdev->button_dev->phys = pdev->button_phys;
+ usb_to_input_id(pdev->udev, &pdev->button_dev->id);
+ pdev->button_dev->dev.parent = &pdev->udev->dev;
+ pdev->button_dev->evbit[0] = BIT_MASK(EV_KEY);
+ pdev->button_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA);
+
+ rc = input_register_device(pdev->button_dev);
+ if (rc) {
+ input_free_device(pdev->button_dev);
+ pdev->button_dev = NULL;
+ goto err_video_unreg;
+ }
+#endif
+
+ return 0;
+
+err_video_unreg:
+ video_unregister_device(&pdev->vdev);
+err_unregister_v4l2_dev:
+ v4l2_device_unregister(&pdev->v4l2_dev);
+err_free_controls:
+ v4l2_ctrl_handler_free(&pdev->ctrl_handler);
+err_free_mem:
+ kfree(pdev->ctrl_buf);
+ kfree(pdev);
+ return rc;
+}
+
+/* The user yanked out the cable... */
+static void usb_pwc_disconnect(struct usb_interface *intf)
+{
+ struct v4l2_device *v = usb_get_intfdata(intf);
+ struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev);
+
+ mutex_lock(&pdev->vb_queue_lock);
+ mutex_lock(&pdev->v4l2_lock);
+ /* No need to keep the urbs around after disconnection */
+ if (pdev->vb_queue.streaming)
+ pwc_isoc_cleanup(pdev);
+ pdev->udev = NULL;
+
+ v4l2_device_disconnect(&pdev->v4l2_dev);
+ video_unregister_device(&pdev->vdev);
+ mutex_unlock(&pdev->v4l2_lock);
+ mutex_unlock(&pdev->vb_queue_lock);
+
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+ if (pdev->button_dev)
+ input_unregister_device(pdev->button_dev);
+#endif
+
+ v4l2_device_put(&pdev->v4l2_dev);
+}
+
+
+/*
+ * Initialization code & module stuff
+ */
+
+static unsigned int leds_nargs;
+
+#ifdef CONFIG_USB_PWC_DEBUG
+module_param_named(trace, pwc_trace, int, 0644);
+#endif
+module_param(power_save, int, 0644);
+module_param_array(leds, int, &leds_nargs, 0444);
+
+#ifdef CONFIG_USB_PWC_DEBUG
+MODULE_PARM_DESC(trace, "For debugging purposes");
+#endif
+MODULE_PARM_DESC(power_save, "Turn power saving for new cameras on or off");
+MODULE_PARM_DESC(leds, "LED on,off time in milliseconds");
+
+MODULE_DESCRIPTION("Philips & OEM USB webcam driver");
+MODULE_AUTHOR("Luc Saillard <luc@saillard.org>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("pwcx");
+MODULE_VERSION( PWC_VERSION );
+
+module_usb_driver(pwc_driver);
Code Review / kvmfornfv.git / blobdiff