int pwc_set_video_mode(struct pwc_device *pdev, int width, int height,
int pixfmt, int frames, int *compression, int send_to_cam)
{
int ret, size;
PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n",
width, height, frames, pixfmt);
size = pwc_get_size(pdev, width, height);
PWC_TRACE("decode_size = %d.\n", size);
if (DEVICE_USE_CODEC1(pdev->type)) {
ret = set_video_mode_Nala(pdev, size, pixfmt, frames,
compression, send_to_cam);
} else if (DEVICE_USE_CODEC3(pdev->type)) {
ret = set_video_mode_Kiara(pdev, size, pixfmt, frames,
compression, send_to_cam);
} else {
ret = set_video_mode_Timon(pdev, size, pixfmt, frames,
compression, send_to_cam);
}
if (ret < 0) {
PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
return ret;
}
pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
PWC_DEBUG_SIZE("Set resolution to %dx%d\n", pdev->width, pdev->height);
return 0;
}
int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
{
int r;
if (pdev->type < 730)
return 0;
on_value /= 100;
off_value /= 100;
if (on_value < 0)
on_value = 0;
if (on_value > 0xff)
on_value = 0xff;
if (off_value < 0)
off_value = 0;
if (off_value > 0xff)
off_value = 0xff;
pdev->ctrl_buf[0] = on_value;
pdev->ctrl_buf[1] = off_value;
r = send_control_msg(pdev,
SET_STATUS_CTL, LED_FORMATTER, pdev->ctrl_buf, 2);
if (r < 0)
PWC_ERROR("Failed to set LED on/off time (%d)\n", r);
return r;
}
static int recv_control_msg(struct pwc_device *pdev,
u8 request, u16 value, int recv_count)
{
int rc;
rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0),
request,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value, pdev->vcinterface,
pdev->ctrl_buf, recv_count, USB_CTRL_GET_TIMEOUT);
if (rc < 0)
PWC_ERROR("recv_control_msg error %d req %02x val %04x\n",
rc, request, value);
return rc;
}
static inline int send_video_command(struct pwc_device *pdev,
int index, const unsigned char *buf, int buflen)
{
int rc;
memcpy(pdev->ctrl_buf, buf, buflen);
rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0),
SET_EP_STREAM_CTL,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
VIDEO_OUTPUT_CONTROL_FORMATTER, index,
pdev->ctrl_buf, buflen, USB_CTRL_SET_TIMEOUT);
if (rc >= 0)
memcpy(pdev->cmd_buf, buf, buflen);
else
PWC_ERROR("send_video_command error %d\n", rc);
return rc;
}
/* POWER */
void pwc_camera_power(struct pwc_device *pdev, int power)
{
int r;
if (!pdev->power_save)
return;
if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
return; /* Not supported by Nala or Timon < release 6 */
if (power)
pdev->ctrl_buf[0] = 0x00; /* active */
else
pdev->ctrl_buf[0] = 0xFF; /* power save */
r = send_control_msg(pdev, SET_STATUS_CTL,
SET_POWER_SAVE_MODE_FORMATTER, pdev->ctrl_buf, 1);
if (r < 0)
PWC_ERROR("Failed to power %s camera (%d)\n",
power ? "on" : "off", r);
}
static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct pwc_device *pdev =
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
if (pdev->color_bal_valid &&
(pdev->auto_white_balance->val != awb_auto ||
time_before(jiffies,
pdev->last_color_bal_update + HZ / 4))) {
pdev->red_balance->val = pdev->last_red_balance;
pdev->blue_balance->val = pdev->last_blue_balance;
break;
}
ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
READ_RED_GAIN_FORMATTER,
&pdev->red_balance->val);
if (ret)
break;
ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
READ_BLUE_GAIN_FORMATTER,
&pdev->blue_balance->val);
if (ret)
break;
pdev->last_red_balance = pdev->red_balance->val;
pdev->last_blue_balance = pdev->blue_balance->val;
pdev->last_color_bal_update = jiffies;
pdev->color_bal_valid = true;
break;
case V4L2_CID_AUTOGAIN:
if (pdev->gain_valid && time_before(jiffies,
pdev->last_gain_update + HZ / 4)) {
pdev->gain->val = pdev->last_gain;
break;
}
ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
READ_AGC_FORMATTER, &pdev->gain->val);
if (ret)
break;
pdev->last_gain = pdev->gain->val;
pdev->last_gain_update = jiffies;
pdev->gain_valid = true;
if (!DEVICE_USE_CODEC3(pdev->type))
break;
/* Fall through for CODEC3 where autogain also controls expo */
case V4L2_CID_EXPOSURE_AUTO:
if (pdev->exposure_valid && time_before(jiffies,
pdev->last_exposure_update + HZ / 4)) {
pdev->exposure->val = pdev->last_exposure;
break;
}
ret = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
READ_SHUTTER_FORMATTER,
&pdev->exposure->val);
if (ret)
break;
pdev->last_exposure = pdev->exposure->val;
pdev->last_exposure_update = jiffies;
pdev->exposure_valid = true;
break;
default:
ret = -EINVAL;
}
if (ret)
PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret);
return ret;
}
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;
case 0x032C:
PWC_INFO("Philips SPC 880NC USB webcam detected.\n");
name = "Philips SPC 880NC 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;
#ifdef CONFIG_USB_PWC_INPUT_EVDEV
err_video_unreg:
video_unregister_device(&pdev->vdev);
#endif
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;
}
/* 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;
}
/* 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,
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) {
fbuf->vb.vb2_buf.timestamp = ktime_get_ns();
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);
}
static int __init usb_pwc_init(void)
{
int i;
#ifdef CONFIG_USB_PWC_DEBUG
PWC_INFO("Philips webcam module version " PWC_VERSION " loaded.\n");
PWC_INFO("Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.\n");
PWC_INFO("Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,\n");
PWC_INFO("the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.\n");
if (pwc_trace >= 0) {
PWC_DEBUG_MODULE("Trace options: 0x%04x\n", pwc_trace);
}
#endif
if (fps) {
if (fps < 4 || fps > 30) {
PWC_ERROR("Framerate out of bounds (4-30).\n");
return -EINVAL;
}
default_fps = fps;
PWC_DEBUG_MODULE("Default framerate set to %d.\n", default_fps);
}
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) {
PWC_ERROR("Malformed camera hint: the colon must be after the dot.\n");
return -EINVAL;
}
if (*colon == '\0') {
/* No colon */
if (*dot != '\0') {
PWC_ERROR("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 =
simple_strtol(s, NULL, 10);
}
}
else {
/* There's a colon, so we have at least a type and a device node */
device_hint[i].type =
simple_strtol(s, NULL, 10);
device_hint[i].device_node =
simple_strtol(colon + 1, NULL, 10);
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';
}
}
PWC_TRACE("device_hint[%d]:\n", i);
PWC_TRACE(" type : %d\n", device_hint[i].type);
PWC_TRACE(" serial# : %s\n", device_hint[i].serial_number);
PWC_TRACE(" node : %d\n", device_hint[i].device_node);
}
else
device_hint[i].type = 0; /* not filled */
} /* ..for MAX_DEV_HINTS */
PWC_DEBUG_PROBE("Registering driver at address 0x%p.\n", &pwc_driver);
return usb_register(&pwc_driver);
}
int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf)
{
int n, line, col;
void *yuv, *image;
u16 *src;
u16 *dsty, *dstu, *dstv;
image = vb2_plane_vaddr(&fbuf->vb, 0);
yuv = fbuf->data + pdev->frame_header_size; /* Skip header */
/* Raw format; that's easy... */
if (pdev->pixfmt != V4L2_PIX_FMT_YUV420)
{
struct pwc_raw_frame *raw_frame = image;
raw_frame->type = cpu_to_le16(pdev->type);
raw_frame->vbandlength = cpu_to_le16(pdev->vbandlength);
/* cmd_buf is always 4 bytes, but sometimes, only the
* first 3 bytes is filled (Nala case). We can
* determine this using the type of the webcam */
memcpy(raw_frame->cmd, pdev->cmd_buf, 4);
memcpy(raw_frame+1, yuv, pdev->frame_size);
vb2_set_plane_payload(&fbuf->vb, 0,
pdev->frame_size + sizeof(struct pwc_raw_frame));
return 0;
}
vb2_set_plane_payload(&fbuf->vb, 0,
pdev->width * pdev->height * 3 / 2);
if (pdev->vbandlength == 0) {
/* Uncompressed mode.
*
* We do some byte shuffling here to go from the
* native format to YUV420P.
*/
src = (u16 *)yuv;
n = pdev->width * pdev->height;
dsty = (u16 *)(image);
dstu = (u16 *)(image + n);
dstv = (u16 *)(image + n + n / 4);
for (line = 0; line < pdev->height; line++) {
for (col = 0; col < pdev->width; col += 4) {
*dsty++ = *src++;
*dsty++ = *src++;
if (line & 1)
*dstv++ = *src++;
else
*dstu++ = *src++;
}
}
return 0;
}
/*
* Compressed;
* the decompressor routines will write the data in planar format
* immediately.
*/
if (DEVICE_USE_CODEC1(pdev->type)) {
/* TODO & FIXME */
PWC_ERROR("This chipset is not supported for now\n");
return -ENXIO; /* No such device or address: missing decompressor */
} else {
pwc_dec23_decompress(pdev, yuv, image);
}
return 0;
}
