diff options
Diffstat (limited to 'drivers/media/usb/pwc/pwc-if.c')
| -rw-r--r-- | drivers/media/usb/pwc/pwc-if.c | 1223 |
1 files changed, 1223 insertions, 0 deletions
diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c new file mode 100644 index 0000000000..e342199711 --- /dev/null +++ b/drivers/media/usb/pwc/pwc-if.c @@ -0,0 +1,1223 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* 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 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" + +#define CREATE_TRACE_POINTS +#include <trace/events/pwc.h> + +/* Function prototypes and driver templates */ + +/* hotplug device table support */ +static const struct usb_device_id pwc_device_table [] = { + { USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */ + { USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */ + + { USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam 3000 Pro */ + { USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */ + { USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam 4000 Pro */ + { 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/Cisco VT Camera */ + { USB_DEVICE(0x046D, 0x08B7) }, /* Logitech ViewPort AV 100 */ + { USB_DEVICE(0x046D, 0x08B8) }, /* Logitech QuickCam */ + + { USB_DEVICE(0x0471, 0x0302) }, /* Philips PCA645VC */ + { USB_DEVICE(0x0471, 0x0303) }, /* Philips PCA646VC */ + { USB_DEVICE(0x0471, 0x0304) }, /* Askey VC010 type 2 */ + { USB_DEVICE(0x0471, 0x0307) }, /* Philips PCVC675K (Vesta) */ + { USB_DEVICE(0x0471, 0x0308) }, /* Philips PCVC680K (Vesta Pro) */ + { USB_DEVICE(0x0471, 0x030C) }, /* Philips PCVC690K (Vesta Pro Scan) */ + { USB_DEVICE(0x0471, 0x0310) }, /* Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) */ + { USB_DEVICE(0x0471, 0x0311) }, /* Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) */ + { USB_DEVICE(0x0471, 0x0312) }, /* Philips PCVC750K (ToUCam Pro Scan) */ + { USB_DEVICE(0x0471, 0x0313) }, /* Philips PCVC720K/40 (ToUCam XS) */ + { USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC webcam */ + { USB_DEVICE(0x0471, 0x032C) }, /* Philips SPC 880NC webcam */ + + { USB_DEVICE(0x04CC, 0x8116) }, /* Sotec Afina Eye */ + + { 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(0x069A, 0x0001) }, /* Askey VC010 type 1 */ + + { USB_DEVICE(0x06BE, 0x8116) }, /* AME Co. Afina Eye */ + + { USB_DEVICE(0x0d81, 0x1900) }, /* Visionite VCS-UC300 */ + { USB_DEVICE(0x0d81, 0x1910) }, /* Visionite VCS-UM100 */ + + { } +}; +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 const 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 void *pwc_alloc_urb_buffer(struct usb_device *dev, + size_t size, dma_addr_t *dma_handle) +{ + struct device *dmadev = dev->bus->sysdev; + void *buffer = kmalloc(size, GFP_KERNEL); + + if (!buffer) + return NULL; + + *dma_handle = dma_map_single(dmadev, buffer, size, DMA_FROM_DEVICE); + if (dma_mapping_error(dmadev, *dma_handle)) { + kfree(buffer); + return NULL; + } + + return buffer; +} + +static void pwc_free_urb_buffer(struct usb_device *dev, + size_t size, + void *buffer, + dma_addr_t dma_handle) +{ + struct device *dmadev = dev->bus->sysdev; + + dma_unmap_single(dmadev, dma_handle, size, DMA_FROM_DEVICE); + kfree(buffer); +} + +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.field = V4L2_FIELD_NONE; + fbuf->vb.sequence = pdev->vframe_count; + vb2_buffer_done(&fbuf->vb.vb2_buf, 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; + struct device *dmadev = urb->dev->bus->sysdev; + int i, fst, flen; + unsigned char *iso_buf = NULL; + + trace_pwc_handler_enter(urb, pdev); + + if (urb->status == -ENOENT || urb->status == -ECONNRESET || + urb->status == -ESHUTDOWN) { + PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronously.\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; + + dma_sync_single_for_cpu(dmadev, + urb->transfer_dma, + urb->transfer_buffer_length, + DMA_FROM_DEVICE); + + /* 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; + } + + dma_sync_single_for_device(dmadev, + urb->transfer_dma, + urb->transfer_buffer_length, + DMA_FROM_DEVICE); + +handler_end: + trace_pwc_handler_exit(urb, pdev); + + 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_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_length = ISO_BUFFER_SIZE; + urb->transfer_buffer = pwc_alloc_urb_buffer(udev, + urb->transfer_buffer_length, + &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->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++) { + struct urb *urb = pdev->urbs[i]; + + if (urb) { + PWC_DEBUG_MEMORY("Freeing URB\n"); + if (urb->transfer_buffer) + pwc_free_urb_buffer(urb->dev, + urb->transfer_buffer_length, + urb->transfer_buffer, + urb->transfer_dma); + usb_free_urb(urb); + 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.vb2_buf, 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, + unsigned int *nbuffers, unsigned int *nplanes, + unsigned int sizes[], struct device *alloc_devs[]) +{ + 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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct pwc_frame_buf *buf = + container_of(vbuf, 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 queueing 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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct pwc_frame_buf *buf = + container_of(vbuf, 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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct pwc_frame_buf *buf = + container_of(vbuf, 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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct pwc_frame_buf *buf = + container_of(vbuf, 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(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, + VB2_BUF_STATE_ERROR); + mutex_unlock(&pdev->v4l2_lock); +} + +static const 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; + case 0x032C: + PWC_INFO("Philips SPC 880NC USB webcam detected.\n"); + name = "Philips SPC 880NC webcam"; + type_id = 740; + break; + default: + return -ENODEV; + } + } + 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; + } + } + 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; + } + } + 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; + } + } + 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; + } + } + 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; + } + } + 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; + } + + } + 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; + } + } + 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; + strscpy(pdev->vdev.name, name, sizeof(pdev->vdev.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; + pdev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | + V4L2_CAP_READWRITE; + + rc = video_register_device(&pdev->vdev, VFL_TYPE_VIDEO, -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; +} + +/* 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); |