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-rw-r--r--linux/drivers/media/video/Kconfig2
-rw-r--r--linux/drivers/media/video/gspca/Kconfig13
-rw-r--r--linux/drivers/media/video/gspca/Makefile5
-rw-r--r--linux/drivers/media/video/gspca/gspca.c1798
-rw-r--r--linux/drivers/media/video/gspca/gspca.h173
-rw-r--r--linux/drivers/media/video/gspca/jpeg.h301
-rw-r--r--linux/drivers/media/video/gspca/pac207.c940
-rw-r--r--linux/drivers/media/video/gspca/stk014.c580
8 files changed, 3812 insertions, 0 deletions
diff --git a/linux/drivers/media/video/Kconfig b/linux/drivers/media/video/Kconfig
index 3b26fbd3e..edd5a652d 100644
--- a/linux/drivers/media/video/Kconfig
+++ b/linux/drivers/media/video/Kconfig
@@ -793,6 +793,8 @@ menuconfig V4L_USB_DRIVERS
if V4L_USB_DRIVERS && USB
+source "drivers/media/video/gspca/Kconfig"
+
source "drivers/media/video/pvrusb2/Kconfig"
source "drivers/media/video/em28xx/Kconfig"
diff --git a/linux/drivers/media/video/gspca/Kconfig b/linux/drivers/media/video/gspca/Kconfig
new file mode 100644
index 000000000..a04e413e1
--- /dev/null
+++ b/linux/drivers/media/video/gspca/Kconfig
@@ -0,0 +1,13 @@
+config USB_GSPCA
+ tristate "USB GSPCA driver"
+ depends on VIDEO_V4L2
+ ---help---
+ Say Y here if you want support for various USB cameras.
+
+ See <file:Documentation/video4linux/gspca.txt> for more info.
+
+ This driver uses the Video For Linux API. You must say Y or M to
+ "Video For Linux" to use this driver.
+
+ To compile this driver as modules, choose M here: the
+ modules will be called gspca_xxxx.
diff --git a/linux/drivers/media/video/gspca/Makefile b/linux/drivers/media/video/gspca/Makefile
new file mode 100644
index 000000000..81170c19b
--- /dev/null
+++ b/linux/drivers/media/video/gspca/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_GSPCA) += gspca_main.o gspca_pac207.o gspca_stk014.o
+
+gspca_main-objs := gspca.o
+gspca_pac207-objs := pac207.o
+gspca_stk014-objs := stk014.o
diff --git a/linux/drivers/media/video/gspca/gspca.c b/linux/drivers/media/video/gspca/gspca.c
new file mode 100644
index 000000000..04dbaba4b
--- /dev/null
+++ b/linux/drivers/media/video/gspca/gspca.c
@@ -0,0 +1,1798 @@
+/*
+ * Main USB camera driver
+ *
+ * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define MODULE_NAME "gspca"
+
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/vmalloc.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pagemap.h>
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
+#include <linux/jiffies.h>
+
+#include "gspca.h"
+
+MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
+MODULE_DESCRIPTION("GSPCA USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 1)
+static const char version[] = "0.1.1";
+
+static int video_nr = -1;
+
+static int comp_fac = 30; /* Buffer size ratio when compressed in % */
+
+#ifdef GSPCA_DEBUG
+int gspca_debug = D_ERR | D_PROBE;
+EXPORT_SYMBOL(gspca_debug);
+
+static void PDEBUG_MODE(char *txt, __u32 pixfmt, int w, int h)
+{
+ if ((pixfmt >> 24) >= '0' && (pixfmt >> 24) <= 'z') {
+ PDEBUG(D_CONF|D_STREAM, "%s %c%c%c%c %dx%d",
+ txt,
+ pixfmt & 0xff,
+ (pixfmt >> 8) & 0xff,
+ (pixfmt >> 16) & 0xff,
+ pixfmt >> 24,
+ w, h);
+ } else {
+ PDEBUG(D_CONF|D_STREAM, "%s 0x%08x %dx%d",
+ txt,
+ pixfmt,
+ w, h);
+ }
+}
+#else
+#define PDEBUG_MODE(txt, pixfmt, w, h)
+#endif
+
+/*
+ * VMA operations.
+ */
+static void gspca_vm_open(struct vm_area_struct *vma)
+{
+ struct gspca_frame *frame = vma->vm_private_data;
+
+ frame->vma_use_count++;
+ frame->v4l2_buf.flags |= V4L2_BUF_FLAG_MAPPED;
+}
+
+static void gspca_vm_close(struct vm_area_struct *vma)
+{
+ struct gspca_frame *frame = vma->vm_private_data;
+
+ if (--frame->vma_use_count <= 0)
+ frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_MAPPED;
+}
+
+static struct vm_operations_struct gspca_vm_ops = {
+ .open = gspca_vm_open,
+ .close = gspca_vm_close,
+};
+
+/*
+ * ISOC message interrupt from the USB device
+ *
+ * Analyse each packet and call the subdriver for doing the copy
+ * to the frame buffer.
+ */
+static void isoc_irq(struct urb *urb)
+{
+ struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
+ struct gspca_frame *frame;
+ unsigned char *data; /* address of data in the iso message */
+ int i, j, len, st;
+ cam_pkt_op pkt_scan;
+
+ PDEBUG(D_PACK, "isoc irq");
+ if (!gspca_dev->streaming)
+ return;
+ pkt_scan = gspca_dev->sd_desc->pkt_scan;
+ for (i = 0; i < urb->number_of_packets; i++) {
+
+ /* check the availability of the frame buffer */
+ j = gspca_dev->fr_i;
+ j = gspca_dev->fr_queue[j];
+ frame = &gspca_dev->frame[j];
+ if ((frame->v4l2_buf.flags
+ & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
+ != V4L2_BUF_FLAG_QUEUED) {
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ break;
+ }
+
+ /* check the packet status and length */
+ len = urb->iso_frame_desc[i].actual_length;
+ st = urb->iso_frame_desc[i].status;
+ if (st) {
+ PDEBUG(D_ERR, "ISOC data error: [%d] len=%d, status=%d",
+ i, len, st);
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ continue;
+ }
+ if (len == 0)
+ continue;
+
+ /* let the packet be analyzed by the subdriver */
+ PDEBUG(D_PACK, "packet [%d] o:%d l:%d",
+ i, urb->iso_frame_desc[i].offset, len);
+ data = (unsigned char *) urb->transfer_buffer
+ + urb->iso_frame_desc[i].offset;
+ pkt_scan(gspca_dev, frame, data, len);
+ }
+
+ /* resubmit the URB */
+ urb->status = 0;
+ st = usb_submit_urb(urb, GFP_ATOMIC);
+ if (st < 0)
+ PDEBUG(D_ERR|D_PACK, "usb_submit_urb() ret %d", st);
+}
+
+/*
+ * add data to the current frame
+ *
+ * This function is called by the subdrivers at interrupt level.
+ * To build a frame, these ones must add
+ * - one FIRST_PACKET
+ * - 0 or many INTER_PACKETs
+ * - one LAST_PACKET
+ * DISCARD_PACKET invalidates the whole frame.
+ * On LAST_PACKET, a new frame is returned.
+ */
+struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
+ int packet_type,
+ struct gspca_frame *frame,
+ unsigned char *data,
+ int len)
+{
+ int i, j;
+
+ PDEBUG(D_PACK, "add t:%d l:%d", packet_type, len);
+
+ /* when start of a new frame, if the current frame buffer
+ * is not queued, discard the whole frame */
+ if (packet_type == FIRST_PACKET) {
+ if ((frame->v4l2_buf.flags
+ & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
+ != V4L2_BUF_FLAG_QUEUED) {
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ return frame;
+ }
+ frame->data_end = frame->data;
+ jiffies_to_timeval(get_jiffies_64(),
+ &frame->v4l2_buf.timestamp);
+ frame->v4l2_buf.sequence = ++gspca_dev->sequence;
+ } else if (gspca_dev->last_packet_type == DISCARD_PACKET)
+ return frame;
+
+ /* append the packet in the frame buffer */
+ if (len > 0) {
+ if (frame->data_end - frame->data + len
+ > frame->v4l2_buf.length) {
+ PDEBUG(D_ERR|D_PACK, "frame overflow %d > %d",
+ frame->data_end - frame->data + len,
+ frame->v4l2_buf.length);
+ packet_type = DISCARD_PACKET;
+ } else {
+ if (frame->v4l2_buf.memory != V4L2_MEMORY_USERPTR)
+ memcpy(frame->data_end, data, len);
+ else
+ copy_to_user(frame->data_end, data, len);
+ frame->data_end += len;
+ }
+ }
+ gspca_dev->last_packet_type = packet_type;
+
+ /* if last packet, wake the application and advance in the queue */
+ if (packet_type == LAST_PACKET) {
+ frame->v4l2_buf.bytesused = frame->data_end - frame->data;
+ frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_QUEUED;
+ frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE;
+ atomic_inc(&gspca_dev->nevent);
+ wake_up_interruptible(&gspca_dev->wq); /* event = new frame */
+ i = gspca_dev->fr_i;
+ i = (i + 1) % gspca_dev->nframes;
+ PDEBUG(D_FRAM, "frame complete len:%d q:%d i:%d o:%d",
+ frame->v4l2_buf.bytesused,
+ gspca_dev->fr_q,
+ i,
+ gspca_dev->fr_o);
+ j = gspca_dev->fr_queue[i];
+ frame = &gspca_dev->frame[j];
+ gspca_dev->fr_i = i;
+ }
+ return frame;
+}
+EXPORT_SYMBOL(gspca_frame_add);
+
+static int gspca_is_compressed(__u32 format)
+{
+ switch (format) {
+ case V4L2_PIX_FMT_MJPEG:
+ case V4L2_PIX_FMT_JPEG:
+ return 1;
+ }
+ return 0;
+}
+
+static void *rvmalloc(unsigned long size)
+{
+ void *mem;
+ unsigned long adr;
+
+ size = PAGE_ALIGN(size);
+ mem = vmalloc_32(size);
+ if (mem != 0) {
+ memset(mem, 0, size);
+ adr = (unsigned long) mem;
+ while ((long) size > 0) {
+ SetPageReserved(vmalloc_to_page((void *) adr));
+ adr += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
+ }
+ return mem;
+}
+
+static void rvfree(void *mem, unsigned long size)
+{
+ unsigned long adr;
+
+ if (!mem)
+ return;
+ adr = (unsigned long) mem;
+ while ((long) size > 0) {
+ ClearPageReserved(vmalloc_to_page((void *) adr));
+ adr += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
+ vfree(mem);
+}
+
+static int frame_alloc(struct gspca_dev *gspca_dev,
+ unsigned int count,
+ unsigned int frsz,
+ enum v4l2_memory memory)
+{
+ int i, ret = 0;
+
+ PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz);
+ if (gspca_dev->nframes != 0) {
+ PDEBUG(D_ERR|D_STREAM, "alloc frame already done");
+ return -EBUSY;
+ }
+ if (count > GSPCA_MAX_FRAMES)
+ count = GSPCA_MAX_FRAMES;
+ /* if compressed, reduce the buffer size */
+ if (gspca_is_compressed(gspca_dev->pixfmt))
+ frsz = (frsz * comp_fac) / 100;
+ frsz = PAGE_ALIGN(frsz);
+ PDEBUG(D_STREAM, "new fr_sz: %d", frsz);
+ gspca_dev->frsz = frsz;
+ if (memory == V4L2_MEMORY_MMAP) {
+ gspca_dev->frbuf = rvmalloc(frsz * count);
+ if (!gspca_dev->frbuf) {
+ err("frame alloc failed");
+ return -ENOMEM;
+ }
+ }
+ gspca_dev->nframes = count;
+ for (i = 0; i < count; i++) {
+ gspca_dev->frame[i].v4l2_buf.index = i;
+ gspca_dev->frame[i].v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ gspca_dev->frame[i].v4l2_buf.flags = 0;
+ gspca_dev->frame[i].v4l2_buf.field = V4L2_FIELD_NONE;
+ gspca_dev->frame[i].v4l2_buf.length = frsz;
+ gspca_dev->frame[i].v4l2_buf.memory = memory;
+ if (memory == V4L2_MEMORY_MMAP) {
+ gspca_dev->frame[i].data
+ = gspca_dev->frame[i].data_end
+ = gspca_dev->frbuf + i * frsz;
+ gspca_dev->frame[i].v4l2_buf.m.offset = i * frsz;
+ }
+ gspca_dev->frame[i].v4l2_buf.flags = 0; /* buf in app space */
+ }
+ gspca_dev->fr_i = gspca_dev->fr_o = gspca_dev->fr_q = 0;
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ gspca_dev->sequence = 0;
+ atomic_set(&gspca_dev->nevent, 0);
+ return ret;
+}
+
+static void frame_free(struct gspca_dev *gspca_dev)
+{
+ int i;
+
+ PDEBUG(D_STREAM, "frame free");
+ if (gspca_dev->frbuf != 0) {
+ rvfree(gspca_dev->frbuf,
+ gspca_dev->nframes * gspca_dev->frsz);
+ gspca_dev->frbuf = NULL;
+ for (i = 0; i < gspca_dev->nframes; i++)
+ gspca_dev->frame[i].data = NULL;
+ }
+ gspca_dev->nframes = 0;
+}
+
+static int gspca_kill_transfer(struct gspca_dev *gspca_dev)
+{
+ struct urb *urb;
+ unsigned int i;
+
+ PDEBUG(D_STREAM, "kill transfer");
+ for (i = 0; i < NURBS; ++i) {
+ urb = gspca_dev->urb[i];
+ if (urb == NULL)
+ continue;
+
+ gspca_dev->urb[i] = NULL;
+ usb_kill_urb(urb);
+ if (urb->transfer_buffer != 0)
+ usb_buffer_free(gspca_dev->dev,
+ urb->transfer_buffer_length,
+ urb->transfer_buffer,
+ urb->transfer_dma);
+ usb_free_urb(urb);
+ }
+ return 0;
+}
+
+/*
+ * search an input isochronous endpoint in an alternate setting
+ */
+static struct usb_host_endpoint *alt_isoc(struct usb_host_interface *alt,
+ __u8 epaddr)
+{
+ struct usb_host_endpoint *ep;
+ int i, attr;
+
+ epaddr |= USB_DIR_IN;
+ for (i = 0; i < alt->desc.bNumEndpoints; i++) {
+ ep = &alt->endpoint[i];
+ if (ep->desc.bEndpointAddress == epaddr) {
+ attr = ep->desc.bmAttributes
+ & USB_ENDPOINT_XFERTYPE_MASK;
+ if (attr == USB_ENDPOINT_XFER_ISOC)
+ return ep;
+ break;
+ }
+ }
+ return NULL;
+}
+
+/*
+ * search an input isochronous endpoint
+ *
+ * The endpoint is defined by the subdriver.
+ * Use only the first isoc (some Zoran - 0x0572:0x0001 - have two such ep).
+ * This routine may be called many times when the bandwidth is too small
+ * (the bandwidth is checked on urb submit).
+ */
+struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev)
+{
+ struct usb_interface *intf;
+ struct usb_host_endpoint *ep;
+ int i, ret;
+
+ intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
+ i = gspca_dev->alt; /* previous alt setting */
+ while (--i > 0) { /* alt 0 is unusable */
+ ep = alt_isoc(&intf->altsetting[i], gspca_dev->cam.epaddr);
+ if (ep)
+ break;
+ }
+ if (i <= 0) {
+ err("no ISOC endpoint found");
+ return NULL;
+ }
+ PDEBUG(D_STREAM, "use ISOC alt %d ep 0x%02x",
+ i, ep->desc.bEndpointAddress);
+ ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
+ if (ret < 0) {
+ err("set interface err %d", ret);
+ return NULL;
+ }
+ gspca_dev->alt = i;
+ return ep;
+}
+
+/*
+ * create the isochronous URBs
+ */
+static int create_urbs(struct gspca_dev *gspca_dev,
+ struct usb_host_endpoint *ep)
+{
+ struct urb *urb;
+ int n, i, psize, npkt, bsize;
+
+ /* calculate the packet size and the number of packets */
+ /* the URB buffer size must be a power of 2 */
+ psize = le16_to_cpu(ep->desc.wMaxPacketSize);
+ /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */
+ psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
+ npkt = ISO_MAX_SIZE / psize;
+ if (npkt > ISO_MAX_PKT)
+ npkt = ISO_MAX_PKT;
+ bsize = psize * npkt;
+ for (n = ISO_MAX_SIZE; n > 0; n >>= 1) {
+ if (n & bsize) /* !! assume ISO_MAX_SIZE is a power of 2 */
+ break;
+ }
+ if (n != 0) {
+ npkt = n / psize;
+ bsize = psize * npkt;
+ }
+ PDEBUG(D_STREAM,
+ "isoc %d pkts size %d (bsize:%d)", npkt, psize, bsize);
+ for (n = 0; n < NURBS; n++) {
+ urb = usb_alloc_urb(npkt, GFP_KERNEL);
+ if (!urb) {
+ err("usb_alloc_urb failed");
+ return -ENOMEM;
+ }
+ urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev,
+ bsize,
+ GFP_KERNEL,
+ &urb->transfer_dma);
+
+ if (urb->transfer_buffer == NULL) {
+ usb_free_urb(urb);
+ gspca_kill_transfer(gspca_dev);
+ err("usb_buffer_urb failed");
+ return -ENOMEM;
+ }
+ gspca_dev->urb[n] = urb;
+ urb->dev = gspca_dev->dev;
+ urb->context = gspca_dev;
+ urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
+ ep->desc.bEndpointAddress);
+ urb->transfer_flags = URB_ISO_ASAP
+ | URB_NO_TRANSFER_DMA_MAP;
+ urb->interval = ep->desc.bInterval;
+ urb->complete = isoc_irq;
+ urb->number_of_packets = npkt;
+ urb->transfer_buffer_length = bsize;
+ for (i = 0; i < npkt; i++) {
+ urb->iso_frame_desc[i].length = psize;
+ urb->iso_frame_desc[i].offset = psize * i;
+ }
+ }
+ return 0;
+}
+
+/*
+ * start the USB transfer
+ */
+static int gspca_init_transfer(struct gspca_dev *gspca_dev)
+{
+ struct usb_interface *intf;
+ struct usb_host_endpoint *ep;
+ int n, ret;
+
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+
+ /* set the max alternate setting and loop until urb submit succeeds */
+ intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
+ gspca_dev->alt = intf->num_altsetting;
+ for (;;) {
+ PDEBUG(D_STREAM, "init transfer nbalt %d", gspca_dev->alt);
+ ep = get_isoc_ep(gspca_dev);
+ if (ep == NULL) {
+ ret = -EIO;
+ goto out;
+ }
+ ret = create_urbs(gspca_dev, ep);
+ if (ret < 0)
+ goto out;
+
+ /* start the cam */
+ gspca_dev->sd_desc->start(gspca_dev);
+ gspca_dev->streaming = 1;
+ atomic_set(&gspca_dev->nevent, 0);
+
+ /* submit the URBs */
+ for (n = 0; n < NURBS; n++) {
+ ret = usb_submit_urb(gspca_dev->urb[n], GFP_KERNEL);
+ if (ret < 0) {
+ PDEBUG(D_ERR|D_STREAM,
+ "usb_submit_urb [%d] err %d", n, ret);
+ gspca_dev->streaming = 0;
+ gspca_kill_transfer(gspca_dev);
+ if (ret == -ENOSPC)
+ break; /* try the previous alt */
+ goto out;
+ }
+ }
+ if (ret >= 0)
+ break;
+ }
+out:
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+}
+
+static int gspca_set_alt0(struct gspca_dev *gspca_dev)
+{
+ int ret;
+
+ ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
+ if (ret < 0)
+ PDEBUG(D_ERR|D_STREAM, "set interface 0 err %d", ret);
+ return ret;
+}
+
+/* Note both the queue and the usb lock should be hold when calling this */
+static void gspca_stream_off(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->streaming = 0;
+ if (gspca_dev->present) {
+ gspca_dev->sd_desc->stopN(gspca_dev);
+ gspca_kill_transfer(gspca_dev);
+ gspca_set_alt0(gspca_dev);
+ gspca_dev->sd_desc->stop0(gspca_dev);
+ PDEBUG(D_STREAM, "stream off OK");
+ } else {
+ gspca_kill_transfer(gspca_dev);
+ atomic_inc(&gspca_dev->nevent);
+ wake_up_interruptible(&gspca_dev->wq);
+ PDEBUG(D_ERR|D_STREAM, "stream off no device ??");
+ }
+}
+
+static int gspca_set_default_mode(struct gspca_dev *gspca_dev)
+{
+ int i;
+
+ i = gspca_dev->cam.nmodes - 1; /* take the highest mode */
+ gspca_dev->curr_mode = i;
+ gspca_dev->width = gspca_dev->cam.cam_mode[i].width;
+ gspca_dev->height = gspca_dev->cam.cam_mode[i].height;
+ gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixfmt;
+ return 0;
+}
+
+static int wxh_to_mode(struct gspca_dev *gspca_dev,
+ int width, int height)
+{
+ int i;
+
+ for (i = gspca_dev->cam.nmodes - 1; --i >= 0; ) {
+ if (width > gspca_dev->cam.cam_mode[i].width)
+ break;
+ }
+ i++;
+ while (i < gspca_dev->cam.nmodes - 1
+ && width == gspca_dev->cam.cam_mode[i + 1].width
+ && height < gspca_dev->cam.cam_mode[i + 1].height)
+ i++;
+ return i;
+}
+
+static __u32 get_v4l2_depth(__u32 pixfmt)
+{
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_BGR32:
+ case V4L2_PIX_FMT_RGB32:
+ return 32;
+ case V4L2_PIX_FMT_RGB24:
+ case V4L2_PIX_FMT_BGR24:
+ return 24;
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_YUYV: /* packed 4.2.2 */
+ case V4L2_PIX_FMT_YYUV:
+ return 16;
+ case V4L2_PIX_FMT_YUV420: /* planar 4.2.0 */
+ return 12;
+ case V4L2_PIX_FMT_MJPEG:
+ case V4L2_PIX_FMT_JPEG:
+ case V4L2_PIX_FMT_SBGGR8: /* Bayer */
+ return 8;
+ }
+ PDEBUG(D_ERR|D_CONF, "Unknown pixel format %c%c%c%c",
+ pixfmt & 0xff,
+ (pixfmt >> 8) & 0xff,
+ (pixfmt >> 16) & 0xff,
+ pixfmt >> 24);
+ return -EINVAL;
+}
+
+/*
+ * search a mode with the right pixel format
+ */
+static int gspca_get_mode(struct gspca_dev *gspca_dev,
+ int mode,
+ int pixfmt)
+{
+ int modeU, modeD;
+
+ modeU = modeD = mode;
+ while ((modeU < gspca_dev->cam.nmodes) || modeD >= 0) {
+ if (--modeD >= 0) {
+ if (gspca_dev->cam.cam_mode[modeD].pixfmt == pixfmt)
+ return modeD;
+ }
+ if (++modeU < gspca_dev->cam.nmodes) {
+ if (gspca_dev->cam.cam_mode[modeU].pixfmt == pixfmt)
+ return modeU;
+ }
+ }
+ return -EINVAL;
+}
+
+static int vidioc_enum_fmt_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmtdesc)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int i, j, index;
+ __u32 fmt_tb[8];
+
+ PDEBUG(D_CONF, "enum fmt cap");
+
+ /* give an index to each format */
+ index = 0;
+ j = 0;
+ for (i = gspca_dev->cam.nmodes; --i >= 0; ) {
+ fmt_tb[index] = gspca_dev->cam.cam_mode[i].pixfmt;
+ j = 0;
+ for (;;) {
+ if (fmt_tb[j] == fmt_tb[index])
+ break;
+ j++;
+ }
+ if (j == index) {
+ if (fmtdesc->index == index)
+ break; /* new format */
+ index++;
+ if (index >= sizeof fmt_tb / sizeof fmt_tb[0])
+ return -EINVAL;
+ }
+ }
+ if (i < 0)
+ return -EINVAL; /* no more format */
+
+ fmtdesc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ fmtdesc->pixelformat = fmt_tb[index];
+ if (gspca_is_compressed(fmt_tb[index]))
+ fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED;
+ fmtdesc->description[0] = fmtdesc->pixelformat & 0xff;
+ fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff;
+ fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff;
+ fmtdesc->description[3] = fmtdesc->pixelformat >> 24;
+ fmtdesc->description[4] = '\0';
+ return 0;
+}
+
+static int gspca_get_buff_size(struct gspca_dev *gspca_dev)
+{
+ unsigned int size;
+
+ size = gspca_dev->width * gspca_dev->height
+ * get_v4l2_depth(gspca_dev->pixfmt) / 8;
+ if (!size)
+ return -ENOMEM;
+ return size;
+}
+
+static int vidioc_g_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct gspca_dev *gspca_dev = priv;
+
+ fmt->fmt.pix.width = gspca_dev->width;
+ fmt->fmt.pix.height = gspca_dev->height;
+ fmt->fmt.pix.pixelformat = gspca_dev->pixfmt;
+#ifdef GSPCA_DEBUG
+ if (gspca_debug & D_CONF) {
+ PDEBUG_MODE("get fmt cap",
+ fmt->fmt.pix.pixelformat,
+ fmt->fmt.pix.width,
+ fmt->fmt.pix.height);
+ }
+#endif
+ fmt->fmt.pix.field = V4L2_FIELD_NONE;
+ fmt->fmt.pix.bytesperline = get_v4l2_depth(fmt->fmt.pix.pixelformat)
+ * fmt->fmt.pix.width / 8;
+ fmt->fmt.pix.sizeimage = fmt->fmt.pix.bytesperline
+ * fmt->fmt.pix.height;
+/* (should be in the subdriver) */
+ fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
+ fmt->fmt.pix.priv = 0;
+ return 0;
+}
+
+static int try_fmt_cap(struct gspca_dev *gspca_dev,
+ struct v4l2_format *fmt)
+{
+ int w, h, mode, mode2, frsz;
+
+ w = fmt->fmt.pix.width;
+ h = fmt->fmt.pix.height;
+#ifdef GSPCA_DEBUG
+ if (gspca_debug & D_CONF)
+ PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h);
+#endif
+ /* search the closest mode for width and height */
+ mode = wxh_to_mode(gspca_dev, w, h);
+
+ /* OK if right palette */
+ if (gspca_dev->cam.cam_mode[mode].pixfmt != fmt->fmt.pix.pixelformat) {
+
+ /* else, search the closest mode with the same pixel format */
+ mode2 = gspca_get_mode(gspca_dev, mode,
+ fmt->fmt.pix.pixelformat);
+ if (mode2 >= 0)
+ mode = mode2;
+ else {
+
+ /* no chance, return this mode */
+ fmt->fmt.pix.pixelformat
+ = gspca_dev->cam.cam_mode[mode].pixfmt;
+#ifdef GSPCA_DEBUG
+ if (gspca_debug & D_CONF) {
+ PDEBUG_MODE("new format",
+ fmt->fmt.pix.pixelformat,
+ gspca_dev->cam.cam_mode[mode].width,
+ gspca_dev->cam.cam_mode[mode].height);
+ }
+#endif
+ }
+ }
+ fmt->fmt.pix.width = gspca_dev->cam.cam_mode[mode].width;
+ fmt->fmt.pix.height = gspca_dev->cam.cam_mode[mode].height;
+ fmt->fmt.pix.bytesperline = get_v4l2_depth(fmt->fmt.pix.pixelformat)
+ * fmt->fmt.pix.width / 8;
+ frsz = fmt->fmt.pix.bytesperline * fmt->fmt.pix.height;
+ if (gspca_is_compressed(fmt->fmt.pix.pixelformat))
+ frsz = (frsz * comp_fac) / 100;
+ fmt->fmt.pix.sizeimage = frsz;
+ return mode; /* used when s_fmt */
+}
+
+static int vidioc_try_fmt_cap(struct file *file,
+ void *priv,
+ struct v4l2_format *fmt)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int ret;
+
+ ret = try_fmt_cap(gspca_dev, fmt);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static int vidioc_s_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int ret, was_streaming;
+
+#ifdef GSPCA_DEBUG
+ if (gspca_debug & D_CONF) {
+ PDEBUG_MODE("set fmt cap",
+ fmt->fmt.pix.pixelformat,
+ fmt->fmt.pix.width, fmt->fmt.pix.height);
+ }
+#endif
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ ret = try_fmt_cap(gspca_dev, fmt);
+ if (ret < 0)
+ goto out;
+
+ if (ret == gspca_dev->curr_mode)
+ goto out; /* same mode */
+ was_streaming = gspca_dev->streaming;
+ if (was_streaming) {
+ if (gspca_dev->capt_file != 0
+ && gspca_dev->capt_file != file) {
+ ret = -EBUSY;
+ goto out;
+ }
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {
+ ret = -ERESTARTSYS;
+ goto out;
+ }
+ gspca_stream_off(gspca_dev);
+ mutex_unlock(&gspca_dev->usb_lock);
+ }
+ gspca_dev->width = fmt->fmt.pix.width;
+ gspca_dev->height = fmt->fmt.pix.height;
+ gspca_dev->pixfmt = fmt->fmt.pix.pixelformat;
+ gspca_dev->curr_mode = ret;
+ if (was_streaming)
+ ret = gspca_init_transfer(gspca_dev);
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+static int dev_open(struct inode *inode, struct file *file)
+{
+ struct gspca_dev *gspca_dev;
+ int ret;
+
+ PDEBUG(D_STREAM, "opening");
+ gspca_dev = (struct gspca_dev *) video_devdata(file);
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ if (!gspca_dev->present) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /* if not done yet, initialize the sensor */
+ if (gspca_dev->users == 0) {
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {
+ ret = -ERESTARTSYS;
+ goto out;
+ }
+ ret = gspca_dev->sd_desc->open(gspca_dev);
+ mutex_unlock(&gspca_dev->usb_lock);
+ if (ret != 0) {
+ PDEBUG(D_ERR|D_CONF, "init device failed %d", ret);
+ goto out;
+ }
+ } else if (gspca_dev->users > 4) { /* (arbitrary value) */
+ ret = -EBUSY;
+ goto out;
+ }
+ gspca_dev->users++;
+ file->private_data = gspca_dev;
+#ifdef GSPCA_DEBUG
+ /* activate the v4l2 debug */
+ if (gspca_debug & D_CONF)
+ gspca_dev->vdev.debug |= 3;
+ else
+ gspca_dev->vdev.debug &= ~3;
+#endif
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ if (ret != 0)
+ PDEBUG(D_ERR|D_STREAM, "open failed err %d", ret);
+ else
+ PDEBUG(D_STREAM, "open OK");
+ return ret;
+}
+
+static int dev_close(struct inode *inode, struct file *file)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+
+ PDEBUG(D_STREAM, "closing");
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ gspca_dev->users--;
+
+ /* if the file did capture, free the streaming resources */
+ if (gspca_dev->capt_file == file) {
+ mutex_lock(&gspca_dev->usb_lock);
+ if (gspca_dev->streaming)
+ gspca_stream_off(gspca_dev);
+ gspca_dev->sd_desc->close(gspca_dev);
+ mutex_unlock(&gspca_dev->usb_lock);
+ frame_free(gspca_dev);
+ file->private_data = NULL;
+ gspca_dev->capt_file = 0;
+ }
+ mutex_unlock(&gspca_dev->queue_lock);
+ PDEBUG(D_STREAM, "closed");
+ return 0;
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct gspca_dev *gspca_dev = priv;
+
+ PDEBUG(D_CONF, "querycap");
+ memset(cap, 0, sizeof *cap);
+ strncpy(cap->driver, gspca_dev->sd_desc->name, sizeof cap->driver);
+ strncpy(cap->card, gspca_dev->cam.dev_name, sizeof cap->card);
+ strncpy(cap->bus_info, gspca_dev->dev->bus->bus_name,
+ sizeof cap->bus_info);
+ cap->version = DRIVER_VERSION_NUMBER;
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
+ | V4L2_CAP_STREAMING
+ | V4L2_CAP_READWRITE;
+ return 0;
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *q_ctrl)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int i;
+
+ PDEBUG(D_CONF, "queryctrl");
+ for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
+ if (q_ctrl->id == gspca_dev->sd_desc->ctrls[i].qctrl.id) {
+ memcpy(q_ctrl,
+ &gspca_dev->sd_desc->ctrls[i].qctrl,
+ sizeof *q_ctrl);
+ return 0;
+ }
+ }
+ if (q_ctrl->id >= V4L2_CID_BASE
+ && q_ctrl->id <= V4L2_CID_LASTP1) {
+ q_ctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct gspca_dev *gspca_dev = priv;
+ struct ctrl *ctrls;
+ int i, ret;
+
+ PDEBUG(D_CONF, "set ctrl");
+ for (i = 0, ctrls = gspca_dev->sd_desc->ctrls;
+ i < gspca_dev->sd_desc->nctrls;
+ i++, ctrls++) {
+ if (ctrl->id != ctrls->qctrl.id)
+ continue;
+ if (ctrl->value < ctrls->qctrl.minimum
+ && ctrl->value > ctrls->qctrl.maximum)
+ return -ERANGE;
+ PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value);
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ ret = ctrls->set(gspca_dev, ctrl->value);
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+ }
+ return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct gspca_dev *gspca_dev = priv;
+
+ struct ctrl *ctrls;
+ int i, ret;
+
+ for (i = 0, ctrls = gspca_dev->sd_desc->ctrls;
+ i < gspca_dev->sd_desc->nctrls;
+ i++, ctrls++) {
+ if (ctrl->id != ctrls->qctrl.id)
+ continue;
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ ret = ctrls->get(gspca_dev, &ctrl->value);
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+ }
+ return -EINVAL;
+}
+
+static int vidioc_querymenu(struct file *file, void *priv,
+ struct v4l2_querymenu *qmenu)
+{
+ struct gspca_dev *gspca_dev = priv;
+
+ if (!gspca_dev->sd_desc->querymenu)
+ return -EINVAL;
+ return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu);
+}
+
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *input)
+{
+ struct gspca_dev *gspca_dev = priv;
+
+ if (input->index != 0)
+ return -EINVAL;
+ memset(input, 0, sizeof *input);
+ input->type = V4L2_INPUT_TYPE_CAMERA;
+ strncpy(input->name, gspca_dev->sd_desc->name,
+ sizeof input->name);
+ return 0;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ if (i > 0)
+ return -EINVAL;
+ return (0);
+}
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int frsz, ret;
+
+ PDEBUG(D_STREAM, "reqbufs %d", rb->count);
+ if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (rb->memory != V4L2_MEMORY_MMAP
+ && rb->memory != V4L2_MEMORY_USERPTR)
+ return -EINVAL;
+ if (rb->count == 0)
+ return -EINVAL;
+ frsz = gspca_get_buff_size(gspca_dev);
+ if (frsz < 0)
+ return frsz;
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ if (gspca_dev->capt_file != 0) { /* only one file may do capture */
+ ret = -EBUSY;
+ goto out;
+ }
+ ret = frame_alloc(gspca_dev,
+ rb->count,
+ (unsigned int) frsz,
+ rb->memory);
+ if (ret == 0) {
+ rb->count = gspca_dev->nframes;
+ gspca_dev->capt_file = file;
+ }
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ PDEBUG(D_STREAM, "reqbufs st:%d c:%d", ret, rb->count);
+ return ret;
+}
+
+static int vidioc_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *v4l2_buf)
+{
+ struct gspca_dev *gspca_dev = priv;
+ struct gspca_frame *frame;
+
+ PDEBUG(D_STREAM, "querybuf");
+ if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
+ || v4l2_buf->index < 0
+ || v4l2_buf->index >= gspca_dev->nframes)
+ return -EINVAL;
+
+ frame = &gspca_dev->frame[v4l2_buf->index];
+ memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf);
+ return 0;
+}
+
+static int vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int ret;
+
+ PDEBUG(D_STREAM, "stream on");
+ if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ if (!gspca_dev->present) {
+ ret = -ENODEV;
+ goto out;
+ }
+ if (gspca_dev->nframes == 0) {
+ ret = -EINVAL;
+ goto out;
+ }
+ if (gspca_dev->capt_file != file) {
+ ret = -EINVAL;
+ goto out;
+ }
+ if (!gspca_dev->streaming) {
+ ret = gspca_init_transfer(gspca_dev);
+ if (ret < 0)
+ goto out;
+ }
+#ifdef GSPCA_DEBUG
+ if (gspca_debug & D_STREAM) {
+ PDEBUG_MODE("stream on OK",
+ gspca_dev->pixfmt,
+ gspca_dev->width,
+ gspca_dev->height);
+ }
+#endif
+ ret = 0;
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+static int vidioc_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int ret;
+
+ PDEBUG(D_STREAM, "stream off");
+ if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (!gspca_dev->streaming)
+ return 0;
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {
+ ret = -ERESTARTSYS;
+ goto out;
+ }
+ if (gspca_dev->capt_file != file) {
+ ret = -EINVAL;
+ goto out2;
+ }
+ gspca_stream_off(gspca_dev);
+ ret = 0;
+out2:
+ mutex_unlock(&gspca_dev->usb_lock);
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+static int vidioc_g_jpegcomp(struct file *file, void *priv,
+ struct v4l2_jpegcompression *jpegcomp)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int ret;
+
+ if (!gspca_dev->sd_desc->get_jcomp)
+ return -EINVAL;
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ ret = gspca_dev->sd_desc->get_jcomp(gspca_dev, jpegcomp);
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+}
+
+static int vidioc_s_jpegcomp(struct file *file, void *priv,
+ struct v4l2_jpegcompression *jpegcomp)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int ret;
+
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ if (!gspca_dev->sd_desc->set_jcomp)
+ return -EINVAL;
+ ret = gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp);
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+}
+
+static int vidioc_g_parm(struct file *filp, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct gspca_dev *gspca_dev = priv;
+
+ memset(parm, 0, sizeof parm);
+ parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ parm->parm.capture.readbuffers = gspca_dev->nbufread;
+ return 0;
+}
+
+static int vidioc_s_parm(struct file *filp, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct gspca_dev *gspca_dev = priv;
+ int n;
+
+ n = parm->parm.capture.readbuffers;
+ if (n == 0 || n > GSPCA_MAX_FRAMES)
+ parm->parm.capture.readbuffers = gspca_dev->nbufread;
+ else
+ gspca_dev->nbufread = n;
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+static int vidiocgmbuf(struct file *file, void *priv,
+ struct video_mbuf *mbuf)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+ int i;
+
+ PDEBUG(D_STREAM, "cgmbuf");
+ if (gspca_dev->nframes == 0) {
+ struct v4l2_requestbuffers rb;
+ int ret;
+
+ memset(&rb, 0, sizeof rb);
+ rb.count = 4;
+ rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ rb.memory = V4L2_MEMORY_MMAP;
+ ret = vidioc_reqbufs(file, priv, &rb);
+ if (ret != 0)
+ return ret;
+ }
+ mbuf->frames = gspca_dev->nframes;
+ mbuf->size = gspca_dev->frsz * gspca_dev->nframes;
+ for (i = 0; i < mbuf->frames; i++)
+ mbuf->offsets[i] = gspca_dev->frame[i].v4l2_buf.m.offset;
+ return 0;
+}
+#endif
+
+static int dev_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+ struct gspca_frame *frame = 0;
+ struct page *page;
+ unsigned long addr, start, size;
+ int i, ret;
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ int compat = 0;
+#endif
+
+ start = vma->vm_start;
+ size = vma->vm_end - vma->vm_start;
+ PDEBUG(D_STREAM, "mmap start:%08x size:%d", (int) start, (int) size);
+
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+ if (!gspca_dev->present) {
+ ret = -ENODEV;
+ goto out;
+ }
+ if (gspca_dev->capt_file != file) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ for (i = 0; i < gspca_dev->nframes; ++i) {
+ if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) {
+ PDEBUG(D_STREAM, "mmap bad memory type");
+ break;
+ }
+ if ((gspca_dev->frame[i].v4l2_buf.m.offset >> PAGE_SHIFT)
+ == vma->vm_pgoff) {
+ frame = &gspca_dev->frame[i];
+ break;
+ }
+ }
+ if (frame == 0) {
+ PDEBUG(D_STREAM, "mmap no frame buffer found");
+ ret = -EINVAL;
+ goto out;
+ }
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ if (i == 0 && size == frame->v4l2_buf.length * gspca_dev->nframes)
+ compat = 1;
+ else
+#endif
+ if (size != frame->v4l2_buf.length) {
+ PDEBUG(D_STREAM, "mmap bad size");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * - VM_IO marks the area as being a mmaped region for I/O to a
+ * device. It also prevents the region from being core dumped.
+ */
+ vma->vm_flags |= VM_IO;
+
+ addr = (unsigned long) frame->data;
+ while (size > 0) {
+ page = vmalloc_to_page((void *) addr);
+ ret = vm_insert_page(vma, start, page);
+ if (ret < 0)
+ goto out;
+ start += PAGE_SIZE;
+ addr += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
+
+ vma->vm_ops = &gspca_vm_ops;
+ vma->vm_private_data = frame;
+ gspca_vm_open(vma);
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ if (compat) {
+/*fixme: ugly*/
+ for (i = 1; i < gspca_dev->nframes; ++i)
+ gspca_dev->frame[i].v4l2_buf.flags |=
+ V4L2_BUF_FLAG_MAPPED;
+ }
+#endif
+ ret = 0;
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+static unsigned int dev_poll(struct file *file, poll_table * wait)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+ int i, ret;
+
+ PDEBUG(D_FRAM, "poll");
+
+ poll_wait(file, &gspca_dev->wq, wait);
+
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0)
+ return POLLERR;
+ if (gspca_dev->dev == 0
+ || !gspca_dev->streaming) /* if not streaming */
+ ret = POLLERR;
+ else {
+ i = gspca_dev->fr_o;
+ i = gspca_dev->fr_queue[i];
+ if (gspca_dev->frame[i].v4l2_buf.flags & V4L2_BUF_FLAG_DONE)
+ ret = POLLIN | POLLRDNORM; /* something to read */
+ else
+ ret = 0;
+ }
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+/*
+ * wait for a video frame
+ *
+ * If a frame is ready, its index is returned.
+ */
+static int gspca_frame_wait(struct gspca_dev *gspca_dev,
+ int nonblock_ing)
+{
+ struct gspca_frame *frame;
+ int i, j, ret;
+
+ i = gspca_dev->fr_o;
+ j = gspca_dev->fr_queue[i];
+ frame = &gspca_dev->frame[j];
+ if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE)
+ goto ok;
+ if (nonblock_ing) /* no frame yet */
+ return -EAGAIN;
+
+ /* wait till a frame is ready */
+ for (;;) {
+ ret = wait_event_interruptible_timeout(gspca_dev->wq,
+ atomic_read(&gspca_dev->nevent) > 0,
+ msecs_to_jiffies(3000));
+ if (ret <= 0) {
+ if (ret < 0)
+ return ret;
+ return -EIO;
+ }
+ if (!gspca_dev->streaming || !gspca_dev->present)
+ return -EIO;
+ i = gspca_dev->fr_o;
+ j = gspca_dev->fr_queue[i];
+ frame = &gspca_dev->frame[j];
+ if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE)
+ break;
+ }
+
+ok:
+ atomic_dec(&gspca_dev->nevent);
+ gspca_dev->fr_o = (i + 1) % gspca_dev->nframes;
+ PDEBUG(D_FRAM, "frame wait q:%d i:%d o:%d",
+ gspca_dev->fr_q,
+ gspca_dev->fr_i,
+ gspca_dev->fr_o);
+
+ if (gspca_dev->sd_desc->dq_callback)
+ gspca_dev->sd_desc->dq_callback(gspca_dev);
+
+ return j;
+}
+
+/*
+ * dequeue a video buffer
+ *
+ * If nonblock_ing is false, block until a buffer is available.
+ */
+static int vidioc_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *v4l2_buf)
+{
+ struct gspca_dev *gspca_dev = priv;
+ struct gspca_frame *frame;
+ int i, ret;
+
+ PDEBUG(D_FRAM, "dqbuf");
+ if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
+ || (v4l2_buf->memory != V4L2_MEMORY_MMAP
+ && v4l2_buf->memory != V4L2_MEMORY_USERPTR))
+ return -EINVAL;
+ if (!gspca_dev->streaming)
+ return -EINVAL;
+ if (gspca_dev->capt_file != file) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* only one read */
+ if (mutex_lock_interruptible(&gspca_dev->read_lock))
+ return -ERESTARTSYS;
+
+ ret = gspca_frame_wait(gspca_dev, file->f_flags & O_NONBLOCK);
+ if (ret < 0)
+ goto out;
+ i = ret; /* frame index */
+ frame = &gspca_dev->frame[i];
+ frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE;
+ memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf);
+ PDEBUG(D_FRAM, "dqbuf %d", i);
+ ret = 0;
+out:
+ mutex_unlock(&gspca_dev->read_lock);
+ return ret;
+}
+
+/*
+ * queue a video buffer
+ *
+ * Attempting to queue a buffer that has already been
+ * queued will return -EINVAL.
+ */
+static int vidioc_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *v4l2_buf)
+{
+ struct gspca_dev *gspca_dev = priv;
+ struct gspca_frame *frame;
+ int i, index, ret;
+
+ PDEBUG(D_FRAM, "qbuf %d", v4l2_buf->index);
+ if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ index = v4l2_buf->index;
+ if ((unsigned) index >= gspca_dev->nframes) {
+ PDEBUG(D_STREAM,
+ "qbuf idx %d >= %d", index, gspca_dev->nframes);
+ return -EINVAL;
+ }
+ frame = &gspca_dev->frame[index];
+
+ if (v4l2_buf->memory != frame->v4l2_buf.memory) {
+ PDEBUG(D_STREAM, "qbuf bad memory type");
+ return -EINVAL;
+ }
+ if (gspca_dev->capt_file != file)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&gspca_dev->queue_lock))
+ return -ERESTARTSYS;
+
+ if (frame->v4l2_buf.flags
+ & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE)) {
+ PDEBUG(D_STREAM, "qbuf bad state");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED;
+ frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE;
+
+ if (v4l2_buf->memory == V4L2_MEMORY_USERPTR) {
+ frame->data = frame->data_end =
+ (unsigned char *) v4l2_buf->m.userptr;
+ frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr;
+ frame->v4l2_buf.length = v4l2_buf->length;
+ }
+
+ /* put the buffer in the 'queued' queue */
+ i = gspca_dev->fr_q;
+ gspca_dev->fr_queue[i] = index;
+ gspca_dev->fr_q = (i + 1) % gspca_dev->nframes;
+ PDEBUG(D_FRAM, "qbuf q:%d i:%d o:%d",
+ gspca_dev->fr_q,
+ gspca_dev->fr_i,
+ gspca_dev->fr_o);
+
+ v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED;
+ v4l2_buf->flags &= ~V4L2_BUF_FLAG_DONE;
+ ret = 0;
+out:
+ mutex_unlock(&gspca_dev->queue_lock);
+ return ret;
+}
+
+static ssize_t dev_read(struct file *file, char __user *data,
+ size_t count, loff_t *ppos)
+{
+ struct gspca_dev *gspca_dev = file->private_data;
+ struct gspca_frame *frame;
+ struct v4l2_buffer v4l2_buf;
+ struct timeval timestamp;
+ int i, ret, ret2;
+
+ PDEBUG(D_FRAM, "read (%p, %d)", data, count);
+ if (gspca_dev->nframes == 0) {
+ struct v4l2_requestbuffers rb;
+
+ memset(&rb, 0, sizeof rb);
+ rb.count = gspca_dev->nbufread;
+ rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ rb.memory = V4L2_MEMORY_MMAP;
+ ret = vidioc_reqbufs(file, gspca_dev, &rb);
+ if (ret != 0) {
+ PDEBUG(D_STREAM, "read reqbuf err: %d", ret);
+ return ret;
+ }
+ memset(&v4l2_buf, 0, sizeof v4l2_buf);
+ v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ v4l2_buf.memory = V4L2_MEMORY_MMAP;
+ for (i = 0; i < gspca_dev->nbufread; i++) {
+ v4l2_buf.index = i;
+/*fixme: ugly!*/
+ gspca_dev->frame[i].v4l2_buf.flags |=
+ V4L2_BUF_FLAG_MAPPED;
+ ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf);
+ if (ret != 0) {
+ PDEBUG(D_STREAM, "read qbuf err: %d", ret);
+ return ret;
+ }
+ }
+ } else if (gspca_dev->capt_file != file)
+ return -EINVAL;
+
+ if (!gspca_dev->streaming) {
+ ret = vidioc_streamon(file, gspca_dev,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (ret != 0) {
+ PDEBUG(D_STREAM, "read streamon err %d", ret);
+ return ret;
+ }
+ }
+
+ /* get a frame */
+ jiffies_to_timeval(get_jiffies_64(), &timestamp);
+ timestamp.tv_sec--;
+ for (i = 0; i < 2; i++) {
+ memset(&v4l2_buf, 0, sizeof v4l2_buf);
+ v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ v4l2_buf.memory = V4L2_MEMORY_MMAP;
+ ret = vidioc_dqbuf(file, gspca_dev, &v4l2_buf);
+ if (ret != 0) {
+ PDEBUG(D_STREAM, "read dqbuf err %d", ret);
+ return ret;
+ }
+
+ /* if the process slept for more than 1 second,
+ * get a brand new frame */
+ frame = &gspca_dev->frame[v4l2_buf.index];
+ if (frame->v4l2_buf.timestamp.tv_sec >= timestamp.tv_sec)
+ break;
+ ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf);
+ if (ret != 0) {
+ PDEBUG(D_STREAM, "read qbuf err %d", ret);
+ return ret;
+ }
+ }
+
+ /* copy the frame */
+ if (count < frame->v4l2_buf.bytesused) {
+ PDEBUG(D_STREAM, "read bad count: %d < %d",
+ count, frame->v4l2_buf.bytesused);
+/*fixme: special errno?*/
+ ret = -EINVAL;
+ goto out;
+ }
+ count = frame->v4l2_buf.bytesused;
+ ret = copy_to_user(data, frame->data, count);
+ if (ret != 0) {
+ PDEBUG(D_ERR|D_STREAM,
+ "read cp to user lack %d / %d", ret, count);
+ ret = -EFAULT;
+ goto out;
+ }
+ ret = count;
+out:
+ /* in each case, requeue the buffer */
+ ret2 = vidioc_qbuf(file, gspca_dev, &v4l2_buf);
+ if (ret2 != 0)
+ return ret2;
+ return ret;
+}
+
+static void gspca_dev_release(struct video_device *vfd)
+{
+ /* nothing */
+}
+
+static struct file_operations dev_fops = {
+ .owner = THIS_MODULE,
+ .open = dev_open,
+ .release = dev_close,
+ .read = dev_read,
+ .mmap = dev_mmap,
+ .ioctl = video_ioctl2,
+ .llseek = no_llseek,
+ .poll = dev_poll,
+};
+
+static struct video_device gspca_template = {
+ .name = "gspca main driver",
+ .type = VID_TYPE_CAPTURE,
+ .fops = &dev_fops,
+ .release = gspca_dev_release, /* mandatory */
+ .minor = -1,
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
+ .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
+ .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
+ .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_querymenu = vidioc_querymenu,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_streamoff = vidioc_streamoff,
+ .vidioc_g_jpegcomp = vidioc_g_jpegcomp,
+ .vidioc_s_jpegcomp = vidioc_s_jpegcomp,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_s_parm = vidioc_s_parm,
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ .vidiocgmbuf = vidiocgmbuf,
+#endif
+};
+
+/*
+ * probe and create a new gspca device
+ *
+ * This function must be called by the sub-driver when it is
+ * called for probing a new device.
+ */
+int gspca_dev_probe(struct usb_interface *intf,
+ const struct usb_device_id *id,
+ const struct sd_desc *sd_desc,
+ int dev_size)
+{
+ struct usb_interface_descriptor *interface;
+ struct gspca_dev *gspca_dev;
+ struct usb_device *dev = interface_to_usbdev(intf);
+ int ret;
+ __u16 vendor;
+ __u16 product;
+
+ vendor = le16_to_cpu(dev->descriptor.idVendor);
+ product = le16_to_cpu(dev->descriptor.idProduct);
+ PDEBUG(D_PROBE, "probing %04x:%04x", vendor, product);
+
+ /* we don't handle multi-config cameras */
+ if (dev->descriptor.bNumConfigurations != 1)
+ return -ENODEV;
+ interface = &intf->cur_altsetting->desc;
+ if (interface->bInterfaceNumber > 0)
+ return -ENODEV;
+
+ /* create the device */
+ if (dev_size < sizeof *gspca_dev)
+ dev_size = sizeof *gspca_dev;
+ gspca_dev = kzalloc(dev_size, GFP_KERNEL);
+ if (gspca_dev == NULL) {
+ err("couldn't kzalloc gspca struct");
+ return -EIO;
+ }
+ gspca_dev->dev = dev;
+ gspca_dev->iface = interface->bInterfaceNumber;
+ gspca_dev->sd_desc = sd_desc;
+/* gspca_dev->users = 0; (done by kzalloc) */
+ gspca_dev->nbufread = 2;
+
+ /* configure the subdriver */
+ ret = gspca_dev->sd_desc->config(gspca_dev, id);
+ if (ret < 0)
+ goto out;
+ ret = gspca_set_alt0(gspca_dev);
+ if (ret < 0)
+ goto out;
+ gspca_set_default_mode(gspca_dev);
+
+ mutex_init(&gspca_dev->usb_lock);
+ mutex_init(&gspca_dev->read_lock);
+ mutex_init(&gspca_dev->queue_lock);
+ init_waitqueue_head(&gspca_dev->wq);
+
+ /* init video stuff */
+ memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template);
+ gspca_dev->vdev.dev = &dev->dev;
+ ret = video_register_device(&gspca_dev->vdev,
+ VFL_TYPE_GRABBER,
+ video_nr);
+ if (ret < 0) {
+ err("video_register_device err %d", ret);
+ goto out;
+ }
+
+ gspca_dev->present = 1;
+ usb_set_intfdata(intf, gspca_dev);
+ PDEBUG(D_PROBE, "probe ok");
+ return 0;
+out:
+ kfree(gspca_dev);
+ return ret;
+}
+EXPORT_SYMBOL(gspca_dev_probe);
+
+/*
+ * USB disconnection
+ *
+ * This function must be called by the sub-driver
+ * when the device disconnects, after the specific resources are freed.
+ */
+void gspca_disconnect(struct usb_interface *intf)
+{
+ struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
+
+ if (!gspca_dev)
+ return;
+ gspca_dev->present = 0;
+ mutex_lock(&gspca_dev->queue_lock);
+ mutex_lock(&gspca_dev->usb_lock);
+ gspca_dev->streaming = 0;
+ gspca_kill_transfer(gspca_dev);
+ mutex_unlock(&gspca_dev->usb_lock);
+ mutex_unlock(&gspca_dev->queue_lock);
+ while (gspca_dev->users != 0) { /* wait until fully closed */
+ atomic_inc(&gspca_dev->nevent);
+ wake_up_interruptible(&gspca_dev->wq); /* wake processes */
+ schedule();
+ }
+/* We don't want people trying to open up the device */
+ video_unregister_device(&gspca_dev->vdev);
+/* Free the memory */
+ kfree(gspca_dev);
+ PDEBUG(D_PROBE, "disconnect complete");
+}
+EXPORT_SYMBOL(gspca_disconnect);
+
+/* -- module insert / remove -- */
+static int __init gspca_init(void)
+{
+ info("main v%s registered", version);
+ return 0;
+}
+static void __exit gspca_exit(void)
+{
+ info("main deregistered");
+}
+
+module_init(gspca_init);
+module_exit(gspca_exit);
+
+module_param_named(debug, gspca_debug, int, 0644);
+MODULE_PARM_DESC(debug,
+ "Debug (bit) 0x01:error 0x02:probe 0x04:config"
+ " 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout");
+
+module_param(comp_fac, int, 0644);
+MODULE_PARM_DESC(comp_fac,
+ "Buffer size ratio when compressed in percent");
diff --git a/linux/drivers/media/video/gspca/gspca.h b/linux/drivers/media/video/gspca/gspca.h
new file mode 100644
index 000000000..c2618c0e6
--- /dev/null
+++ b/linux/drivers/media/video/gspca/gspca.h
@@ -0,0 +1,173 @@
+#ifndef GSPCAV2_H
+#define GSPCAV2_H
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <linux/mutex.h>
+
+#ifdef GSPCA_DEBUG
+/* GSPCA our debug messages */
+extern int gspca_debug;
+#define PDEBUG(level, fmt, args...) \
+ do {\
+ if (gspca_debug & (level)) \
+ printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
+ } while (0)
+#define D_ERR 0x01
+#define D_PROBE 0x02
+#define D_CONF 0x04
+#define D_STREAM 0x08
+#define D_FRAM 0x10
+#define D_PACK 0x20
+#define D_USBI 0x40
+#define D_USBO 0x80
+#else
+#define PDEBUG(level, fmt, args...)
+#endif
+#undef err
+#define err(fmt, args...) \
+ do {\
+ printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args); \
+ } while (0)
+#undef info
+#define info(fmt, args...) \
+ do {\
+ printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
+ } while (0)
+#undef warn
+#define warn(fmt, args...) \
+ do {\
+ printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args); \
+ } while (0)
+
+#define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
+/* ISOC transfers */
+#define NURBS 4 /* number of URBs */
+#define ISO_MAX_PKT 32 /* max number of packets in an ISOC transfer */
+#define ISO_MAX_SIZE 0x10000 /* max size of one URB buffer (64 Kb) */
+
+/* device information - set at probe time */
+struct cam_mode {
+ __u32 pixfmt;
+ short width;
+ short height;
+ short mode; /* subdriver value */
+ short reserved; /* subdriver value */
+};
+struct cam {
+ char *dev_name;
+ struct cam_mode *cam_mode; /* size nmodes */
+ char nmodes;
+ __u8 epaddr;
+};
+
+struct gspca_dev;
+struct gspca_frame;
+
+/* subdriver operations */
+typedef int (*cam_op) (struct gspca_dev *);
+typedef void (*cam_v_op) (struct gspca_dev *);
+typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
+typedef int (*cam_jpg_op) (struct gspca_dev *,
+ struct v4l2_jpegcompression *);
+typedef int (*cam_qmnu_op) (struct gspca_dev *,
+ struct v4l2_querymenu *);
+typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame,
+ unsigned char *data,
+ int len);
+
+struct ctrl {
+ struct v4l2_queryctrl qctrl;
+ int (*set)(struct gspca_dev *, __s32);
+ int (*get)(struct gspca_dev *, __s32 *);
+};
+
+/* subdriver description */
+struct sd_desc {
+/* information */
+ char *name; /* sub-driver name */
+/* controls */
+ struct ctrl *ctrls;
+ int nctrls;
+/* operations */
+ cam_cf_op config; /* called on probe */
+ cam_op open; /* called on open */
+ cam_v_op start; /* called on stream on */
+ cam_v_op stopN; /* called on stream off - main alt */
+ cam_v_op stop0; /* called on stream off - alt 0 */
+ cam_v_op close; /* called on close */
+ cam_v_op dq_callback; /* called when a frame has been dequeued */
+ cam_pkt_op pkt_scan;
+ cam_jpg_op get_jcomp;
+ cam_jpg_op set_jcomp;
+ cam_qmnu_op querymenu;
+};
+
+/* packet types when moving from iso buf to frame buf */
+#define DISCARD_PACKET 0
+#define FIRST_PACKET 1
+#define INTER_PACKET 2
+#define LAST_PACKET 3
+
+struct gspca_frame {
+ unsigned char *data; /* frame buffer */
+ unsigned char *data_end; /* end of frame while filling */
+ int vma_use_count;
+ struct v4l2_buffer v4l2_buf;
+};
+
+struct gspca_dev {
+ struct video_device vdev; /* !! must be the first item */
+ struct usb_device *dev;
+ struct file *capt_file; /* file doing video capture */
+
+ struct cam cam; /* device information */
+ const struct sd_desc *sd_desc; /* subdriver description */
+
+ struct urb *urb[NURBS];
+
+ __u8 *frbuf; /* buffer for nframes */
+ struct gspca_frame frame[GSPCA_MAX_FRAMES];
+ unsigned int frsz; /* frame size */
+ char nframes; /* number of frames */
+ char fr_i; /* frame being filled */
+ char fr_q; /* next frame to queue */
+ char fr_o; /* next frame to dequeue */
+ signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
+ char last_packet_type;
+
+ __u8 iface; /* USB interface number */
+ __u8 alt; /* USB alternate setting */
+ unsigned char curr_mode; /* current camera mode */
+ __u32 pixfmt; /* current mode parameters */
+ short width;
+ short height;
+
+ atomic_t nevent; /* number of frames done */
+ wait_queue_head_t wq; /* wait queue */
+ struct mutex usb_lock; /* usb exchange protection */
+ struct mutex read_lock; /* read protection */
+ struct mutex queue_lock; /* ISOC queue protection */
+ __u32 sequence; /* frame sequence number */
+ char streaming;
+ char users; /* # open */
+ char present; /* device connected */
+ char nbufread; /* number of buffers for read() */
+};
+
+int gspca_dev_probe(struct usb_interface *intf,
+ const struct usb_device_id *id,
+ const struct sd_desc *sd_desc,
+ int dev_size);
+void gspca_disconnect(struct usb_interface *intf);
+struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
+ int packet_type,
+ struct gspca_frame *frame,
+ unsigned char *data,
+ int len);
+#endif /* GSPCAV2_H */
diff --git a/linux/drivers/media/video/gspca/jpeg.h b/linux/drivers/media/video/gspca/jpeg.h
new file mode 100644
index 000000000..c4087c0eb
--- /dev/null
+++ b/linux/drivers/media/video/gspca/jpeg.h
@@ -0,0 +1,301 @@
+#ifndef JPEG_H
+#define JPEG_H 1
+/*
+ * Insert a JPEG header at start of frame
+ *
+ * This module is used by the gspca subdrivers.
+ * A special case is done for Conexant webcams.
+ *
+ * Copyright (C) Jean-Francois Moine (http://moinejf.free.fr)
+ *
+ * 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
+ * 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
+ *
+ */
+
+/* start of jpeg frame + quantization table */
+static const unsigned char quant[][0x88] = {
+/* index 0 - Q40*/
+ {
+ 0xff, 0xd8, /* jpeg */
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0, /* quantization table part 1 */
+ 20, 14, 15, 18, 15, 13, 20, 18, 16, 18, 23, 21, 20, 24, 30, 50,
+ 33, 30, 28, 28, 30, 61, 44, 46, 36, 50, 73, 64, 76, 75, 71, 64,
+ 70, 69, 80, 90, 115, 98, 80, 85, 109, 86, 69, 70, 100, 136, 101,
+ 109,
+ 119, 123, 129, 130, 129, 78, 96, 141, 151, 140, 125, 150, 115,
+ 126, 129, 124,
+1, /* quantization table part 2 */
+ 21, 23, 23, 30, 26, 30, 59, 33, 33, 59, 124, 83, 70, 83, 124, 124,
+ 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
+ 124, 124, 124,
+ 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
+ 124, 124, 124,
+ 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124,
+ 124, 124, 124},
+/* index 1 - Q50 */
+ {
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40,
+ 26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51,
+ 56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80, 109, 81, 87,
+ 95, 98, 103, 104, 103, 62, 77, 113, 121, 112, 100, 120, 92, 101,
+ 103, 99,
+1,
+ 17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 66, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99},
+/* index 2 Q60 */
+ {
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 13, 9, 10, 11, 10, 8, 13, 11, 10, 11, 14, 14, 13, 15, 19, 32,
+ 21, 19, 18, 18, 19, 39, 28, 30, 23, 32, 46, 41, 49, 48, 46, 41,
+ 45, 44, 51, 58, 74, 62, 51, 54, 70, 55, 44, 45, 64, 87, 65, 70,
+ 76, 78, 82, 83, 82, 50, 62, 90, 97, 90, 80, 96, 74, 81, 82, 79,
+1,
+ 14, 14, 14, 19, 17, 19, 38, 21, 21, 38, 79, 53, 45, 53, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
+ 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79},
+/* index 3 - Q70 */
+ {
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 10, 7, 7, 8, 7, 6, 10, 8, 8, 8, 11, 10, 10, 11, 14, 24,
+ 16, 14, 13, 13, 14, 29, 21, 22, 17, 24, 35, 31, 37, 36, 34, 31,
+ 34, 33, 38, 43, 55, 47, 38, 41, 52, 41, 33, 34, 48, 65, 49, 52,
+ 57, 59, 62, 62, 62, 37, 46, 68, 73, 67, 60, 72, 55, 61, 62, 59,
+1,
+ 10, 11, 11, 14, 13, 14, 28, 16, 16, 28, 59, 40, 34, 40, 59, 59,
+ 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
+ 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59,
+ 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59},
+/* index 4 - Q80 */
+ {
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 6, 4, 5, 6, 5, 4, 6, 6, 5, 6, 7, 7, 6, 8, 10, 16,
+ 10, 10, 9, 9, 10, 20, 14, 15, 12, 16, 23, 20, 24, 24, 23, 20,
+ 22, 22, 26, 29, 37, 31, 26, 27, 35, 28, 22, 22, 32, 44, 32, 35,
+ 38, 39, 41, 42, 41, 25, 31, 45, 48, 45, 40, 48, 37, 40, 41, 40,
+1,
+ 7, 7, 7, 10, 8, 10, 19, 10, 10, 19, 40, 26, 22, 26, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
+ 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40},
+/* index 5 - Q85 */
+ {
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 5, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 5, 5, 6, 7, 12,
+ 8, 7, 7, 7, 7, 15, 11, 11, 9, 12, 17, 15, 18, 18, 17, 15,
+ 17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17, 24, 33, 24, 26,
+ 29, 29, 31, 31, 31, 19, 23, 34, 36, 34, 30, 36, 28, 30, 31, 30,
+1,
+ 5, 5, 5, 7, 6, 7, 14, 8, 8, 14, 30, 20, 17, 20, 30, 30,
+ 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
+ 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
+ 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30},
+/* index 6 - 86 */
+{
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 0x04, 0x03, 0x03, 0x04, 0x03, 0x03, 0x04, 0x04,
+ 0x04, 0x04, 0x05, 0x05, 0x04, 0x05, 0x07, 0x0B,
+ 0x07, 0x07, 0x06, 0x06, 0x07, 0x0E, 0x0A, 0x0A,
+ 0x08, 0x0B, 0x10, 0x0E, 0x11, 0x11, 0x10, 0x0E,
+ 0x10, 0x0F, 0x12, 0x14, 0x1A, 0x16, 0x12, 0x13,
+ 0x18, 0x13, 0x0F, 0x10, 0x16, 0x1F, 0x17, 0x18,
+ 0x1B, 0x1B, 0x1D, 0x1D, 0x1D, 0x11, 0x16, 0x20,
+ 0x22, 0x1F, 0x1C, 0x22, 0x1A, 0x1C, 0x1D, 0x1C,
+1,
+ 0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x0D, 0x07,
+ 0x07, 0x0D, 0x1C, 0x12, 0x10, 0x12, 0x1C, 0x1C,
+ 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
+ 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
+ 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
+ 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
+ 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
+ 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C,
+ },
+/* index 7 - 88 */
+{
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 0x04, 0x03, 0x03, 0x03, 0x03, 0x02, 0x04, 0x03,
+ 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x06, 0x0A,
+ 0x06, 0x06, 0x05, 0x05, 0x06, 0x0C, 0x08, 0x09,
+ 0x07, 0x0A, 0x0E, 0x0C, 0x0F, 0x0E, 0x0E, 0x0C,
+ 0x0D, 0x0D, 0x0F, 0x11, 0x16, 0x13, 0x0F, 0x10,
+ 0x15, 0x11, 0x0D, 0x0D, 0x13, 0x1A, 0x13, 0x15,
+ 0x17, 0x18, 0x19, 0x19, 0x19, 0x0F, 0x12, 0x1B,
+ 0x1D, 0x1B, 0x18, 0x1D, 0x16, 0x18, 0x19, 0x18,
+1,
+ 0x04, 0x04, 0x04, 0x06, 0x05, 0x06, 0x0B, 0x06,
+ 0x06, 0x0B, 0x18, 0x10, 0x0D, 0x10, 0x18, 0x18,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+},
+/* index 8 - ?? */
+{
+ 0xff, 0xd8,
+ 0xff, 0xdb, 0x00, 0x84, /* DQT */
+0,
+ 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
+ 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x05,
+ 0x03, 0x03, 0x03, 0x03, 0x03, 0x06, 0x04, 0x05,
+ 0x04, 0x05, 0x07, 0x06, 0x08, 0x08, 0x07, 0x06,
+ 0x07, 0x07, 0x08, 0x09, 0x0C, 0x0A, 0x08, 0x09,
+ 0x0B, 0x09, 0x07, 0x07, 0x0A, 0x0E, 0x0A, 0x0B,
+ 0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x08, 0x0A, 0x0E,
+ 0x0F, 0x0E, 0x0D, 0x0F, 0x0C, 0x0D, 0x0D, 0x0C,
+1,
+ 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x06, 0x03,
+ 0x03, 0x06, 0x0C, 0x08, 0x07, 0x08, 0x0C, 0x0C,
+ 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
+ 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
+ 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
+ 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
+ 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C,
+ 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C
+}
+};
+
+/* huffman table + start of SOF0 */
+static unsigned char huffman[] = {
+ 0xff, 0xc4, 0x01, 0xa2,
+ 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+ 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01, 0x00, 0x03,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
+ 0x0a, 0x0b, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03,
+ 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00,
+ 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04,
+ 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13,
+ 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81,
+ 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15,
+ 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82,
+ 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25,
+ 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36,
+ 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46,
+ 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56,
+ 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66,
+ 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
+ 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86,
+ 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95,
+ 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4,
+ 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3,
+ 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2,
+ 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca,
+ 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
+ 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+ 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5,
+ 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02,
+ 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
+ 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
+ 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
+ 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22,
+ 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1,
+ 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62,
+ 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25,
+ 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28,
+ 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a,
+ 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
+ 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,
+ 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
+ 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
+ 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
+ 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
+ 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
+ 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
+ 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
+ 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3,
+ 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2,
+ 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
+#ifdef CONEX_CAM
+/* the Conexant frames start with SOF0 */
+#else
+ 0xff, 0xc0, 0x00, 0x11, /* SOF0 (start of frame 0 */
+ 0x08, /* data precision */
+#endif
+};
+
+#ifndef CONEX_CAM
+/* variable part:
+ * 0x01, 0xe0, height
+ * 0x02, 0x80, width
+ * 0x03, component number
+ * 0x01,
+ * 0x21, samples Y
+ */
+
+/* end of header */
+static unsigned char eoh[] = {
+ 0x00, /* quant Y */
+ 0x02, 0x11, 0x01, /* samples CbCr - quant CbCr */
+ 0x03, 0x11, 0x01,
+
+ 0xff, 0xda, 0x00, 0x0c, /* SOS (start of scan */
+ 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
+};
+#endif
+
+/* -- output the JPEG header -- */
+static void jpeg_put_header(struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame,
+ int qindex,
+ int samplesY)
+{
+#ifndef CONEX_CAM
+ unsigned char tmpbuf[8];
+#endif
+
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+ (unsigned char *) quant[qindex], sizeof quant[0]);
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ (unsigned char *) huffman, sizeof huffman);
+#ifndef CONEX_CAM
+ tmpbuf[0] = gspca_dev->height >> 8;
+ tmpbuf[1] = gspca_dev->height & 0xff;
+ tmpbuf[2] = gspca_dev->width >> 8;
+ tmpbuf[3] = gspca_dev->width & 0xff;
+ tmpbuf[4] = 0x03; /* component number */
+ tmpbuf[5] = 0x01; /* first component */
+ tmpbuf[6] = samplesY;
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ tmpbuf, 7);
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ eoh, sizeof eoh);
+#endif
+}
+#endif
diff --git a/linux/drivers/media/video/gspca/pac207.c b/linux/drivers/media/video/gspca/pac207.c
new file mode 100644
index 000000000..57d48f51e
--- /dev/null
+++ b/linux/drivers/media/video/gspca/pac207.c
@@ -0,0 +1,940 @@
+/*
+ * Pixart PAC207BCA library
+ *
+ * Copyright (C) 2008 Hans de Goede <j.w.r.degoede@hhs.nl>
+ * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
+ * Copyleft (C) 2005 Michel Xhaard mxhaard@magic.fr
+ *
+ * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
+ *
+ * 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
+ *
+ */
+
+#define MODULE_NAME "pac207"
+
+#include "gspca.h"
+
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 1)
+static const char version[] = "0.1.1";
+
+MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>");
+MODULE_DESCRIPTION("Pixart PAC207");
+MODULE_LICENSE("GPL");
+
+#define PAC207_CTRL_TIMEOUT 100 /* ms */
+
+#define PAC207_BRIGHTNESS_MIN 0
+#define PAC207_BRIGHTNESS_MAX 255
+#define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */
+
+#define PAC207_EXPOSURE_MIN 4
+#define PAC207_EXPOSURE_MAX 26
+#define PAC207_EXPOSURE_DEFAULT 4 /* power on default: 3 ?? */
+#define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */
+
+#define PAC207_GAIN_MIN 0
+#define PAC207_GAIN_MAX 31
+#define PAC207_GAIN_DEFAULT 9 /* power on default: 9 */
+#define PAC207_GAIN_KNEE 20
+
+#define PAC207_AUTOGAIN_DEADZONE 30
+/* We calculating the autogain at the end of the transfer of a frame, at this
+ moment a frame with the old settings is being transmitted, and a frame is
+ being captured with the old settings. So if we adjust the autogain we must
+ ignore atleast the 2 next frames for the new settings to come into effect
+ before doing any other adjustments */
+#define PAC207_AUTOGAIN_IGNORE_FRAMES 3
+
+enum pac207_line_state {
+ LINE_HEADER1,
+ LINE_HEADER2,
+ LINE_UNCOMPRESSED,
+ LINE_COMPRESSED,
+};
+
+struct pac207_decoder_state {
+ /* generic state */
+ u16 line_read;
+ u16 line_marker;
+ u8 line_state;
+ u8 header_read;
+ /* compression state */
+ u16 processed_bytes;
+ u8 remaining_bits;
+ s8 no_remaining_bits;
+ u8 get_abs;
+ u8 discard_byte;
+ u8 line_decode_buf[352];
+};
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ struct pac207_decoder_state decoder_state;
+
+ u8 mode;
+
+ u8 brightness;
+ u8 exposure;
+ u8 autogain;
+ u8 gain;
+
+ u8 sof_read;
+ u8 autogain_ignore_frames;
+
+ atomic_t avg_lum;
+};
+
+/* V4L2 controls supported by the driver */
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
+
+static struct ctrl sd_ctrls[] = {
+#define SD_BRIGHTNESS 0
+ {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = PAC207_BRIGHTNESS_MIN,
+ .maximum = PAC207_BRIGHTNESS_MAX,
+ .step = 1,
+ .default_value = PAC207_BRIGHTNESS_DEFAULT,
+ .flags = 0,
+ },
+ .set = sd_setbrightness,
+ .get = sd_getbrightness,
+ },
+#define SD_EXPOSURE 1
+ {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "exposure",
+ .minimum = PAC207_EXPOSURE_MIN,
+ .maximum = PAC207_EXPOSURE_MAX,
+ .step = 1,
+ .default_value = PAC207_EXPOSURE_DEFAULT,
+ .flags = 0,
+ },
+ .set = sd_setexposure,
+ .get = sd_getexposure,
+ },
+#define SD_AUTOGAIN 2
+ {
+ {
+ .id = V4L2_CID_AUTOGAIN,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto Gain",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ .flags = 0,
+ },
+ .set = sd_setautogain,
+ .get = sd_getautogain,
+ },
+#define SD_GAIN 3
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "gain",
+ .minimum = PAC207_GAIN_MIN,
+ .maximum = PAC207_GAIN_MAX,
+ .step = 1,
+ .default_value = PAC207_GAIN_DEFAULT,
+ .flags = 0,
+ },
+ .set = sd_setgain,
+ .get = sd_getgain,
+ },
+};
+
+static struct cam_mode sif_mode[] = {
+ {V4L2_PIX_FMT_SBGGR8, 176, 144, 1},
+ {V4L2_PIX_FMT_SBGGR8, 352, 288, 0},
+};
+
+static const __u8 pac207_sensor_init[][8] = {
+ {0x10, 0x12, 0x0d, 0x12, 0x0c, 0x01, 0x29, 0xf0},
+ {0x00, 0x64, 0x64, 0x64, 0x04, 0x10, 0xf0, 0x30},
+ {0x00, 0x00, 0x00, 0x70, 0xa0, 0xf8, 0x00, 0x00},
+ {0x00, 0x00, 0x32, 0x00, 0x96, 0x00, 0xa2, 0x02},
+ {0x32, 0x00, 0x96, 0x00, 0xA2, 0x02, 0xaf, 0x00},
+};
+
+ /* 48 reg_72 Rate Control end BalSize_4a =0x36 */
+static const __u8 PacReg72[] = { 0x00, 0x00, 0x36, 0x00 };
+
+static const char pac207_sof_marker[5] = { 0xff, 0xff, 0x00, 0xff, 0x96 };
+
+int pac207_write_regs(struct gspca_dev *gspca_dev, u16 index,
+ const u8 *buffer, u16 length)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int err;
+ u8 kbuf[8];
+
+ memcpy(kbuf, buffer, length);
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ 0x00, index, kbuf, length, PAC207_CTRL_TIMEOUT);
+ if (err < 0)
+ PDEBUG(D_ERR,
+ "Failed to write registers to index 0x%04X, error %d)",
+ index, err);
+
+ return err;
+}
+
+
+int pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int err;
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ value, index, NULL, 0, PAC207_CTRL_TIMEOUT);
+ if (err)
+ PDEBUG(D_ERR, "Failed to write a register (index 0x%04X,"
+ " value 0x%02X, error %d)", index, value, err);
+
+ return err;
+}
+
+
+int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ u8 buff;
+ int res;
+
+ res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ 0x00, index, &buff, 1, PAC207_CTRL_TIMEOUT);
+ if (res < 0) {
+ PDEBUG(D_ERR,
+ "Failed to read a register (index 0x%04X, error %d)",
+ index, res);
+ return res;
+ }
+
+ return buff;
+}
+
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct cam *cam;
+ u8 idreg[2];
+
+ idreg[0] = pac207_read_reg(gspca_dev, 0x0000);
+ idreg[1] = pac207_read_reg(gspca_dev, 0x0001);
+ idreg[0] = ((idreg[0] & 0x0F) << 4) | ((idreg[1] & 0xf0) >> 4);
+ idreg[1] = idreg[1] & 0x0f;
+ PDEBUG(D_PROBE, "Pixart Sensor ID 0x%02X Chips ID 0x%02X",
+ idreg[0], idreg[1]);
+
+ if (idreg[0] != 0x27) {
+ PDEBUG(D_PROBE, "Error invalid sensor ID!");
+ return -ENODEV;
+ }
+
+ pac207_write_reg(gspca_dev, 0x41, 0x00);
+ /* Bit_0=Image Format,
+ * Bit_1=LED,
+ * Bit_2=Compression test mode enable */
+ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
+ pac207_write_reg(gspca_dev, 0x11, 0x30); /* Analog Bias */
+
+ PDEBUG(D_PROBE,
+ "Pixart PAC207BCA Image Processor and Control Chip detected"
+ " (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct);
+
+ cam = &gspca_dev->cam;
+ cam->dev_name = (char *) id->driver_info;
+ cam->epaddr = 0x05;
+ cam->cam_mode = sif_mode;
+ cam->nmodes = ARRAY_SIZE(sif_mode);
+ sd->brightness = PAC207_BRIGHTNESS_DEFAULT;
+ sd->exposure = PAC207_EXPOSURE_DEFAULT;
+ sd->gain = PAC207_GAIN_DEFAULT;
+
+ return 0;
+}
+
+/* this function is called at open time */
+static int sd_open(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->autogain = 1;
+
+ return 0;
+}
+
+/* -- start the camera -- */
+static void sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ __u8 mode;
+
+ pac207_write_reg(gspca_dev, 0x0f, 0x10); /* Power control (Bit 6-0) */
+ pac207_write_regs(gspca_dev, 0x0002, pac207_sensor_init[0], 8);
+ pac207_write_regs(gspca_dev, 0x000a, pac207_sensor_init[1], 8);
+ pac207_write_regs(gspca_dev, 0x0012, pac207_sensor_init[2], 8);
+ pac207_write_regs(gspca_dev, 0x0040, pac207_sensor_init[3], 8);
+ pac207_write_regs(gspca_dev, 0x0042, pac207_sensor_init[4], 8);
+ pac207_write_regs(gspca_dev, 0x0048, PacReg72, 4);
+
+ /* Compression Balance */
+ if (gspca_dev->width == 176)
+ pac207_write_reg(gspca_dev, 0x4a, 0xff);
+ else
+ pac207_write_reg(gspca_dev, 0x4a, 0x88);
+ pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */
+ pac207_write_reg(gspca_dev, 0x08, sd->brightness);
+
+ /* PGA global gain (Bit 4-0) */
+ pac207_write_reg(gspca_dev, 0x0e, sd->gain);
+ pac207_write_reg(gspca_dev, 0x02, sd->exposure); /* PXCK = 12MHz /n */
+
+ mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (gspca_dev->width == 176) { /* 176x144 */
+ mode |= 0x01;
+ PDEBUG(D_STREAM, "pac207_start mode 176x144");
+ } else/* 352x288 */
+ PDEBUG(D_STREAM, "pac207_start mode 352x288");
+ pac207_write_reg(gspca_dev, 0x41, mode);
+
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+ udelay(1000); /* taken from gspca */
+ pac207_write_reg(gspca_dev, 0x40, 0x01); /* Start ISO pipe */
+
+ sd->sof_read = 0;
+ sd->autogain_ignore_frames = 0;
+ atomic_set(&sd->avg_lum, -1);
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */
+ pac207_write_reg(gspca_dev, 0x41, 0x00); /* Turn of LED */
+ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
+}
+
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+}
+
+/* this function is called at close time */
+static void sd_close(struct gspca_dev *gspca_dev)
+{
+}
+
+/* -- convert pixart frames to Bayer -- */
+/* Sonix decompressor struct B.S.(2004) */
+static struct {
+ u8 is_abs;
+ u8 len;
+ s8 val;
+} table[256];
+
+void init_pixart_decoder(void)
+{
+ int i, is_abs, val, len;
+
+ for (i = 0; i < 256; i++) {
+ is_abs = 0;
+ val = 0;
+ len = 0;
+ if ((i & 0xC0) == 0) {
+ /* code 00 */
+ val = 0;
+ len = 2;
+ } else if ((i & 0xC0) == 0x40) {
+ /* code 01 */
+ val = -5;
+ len = 2;
+ } else if ((i & 0xC0) == 0x80) {
+ /* code 10 */
+ val = 5;
+ len = 2;
+ } else if ((i & 0xF0) == 0xC0) {
+ /* code 1100 */
+ val = -10;
+ len = 4;
+ } else if ((i & 0xF0) == 0xD0) {
+ /* code 1101 */
+ val = 10;
+ len = 4;
+ } else if ((i & 0xF8) == 0xE0) {
+ /* code 11100 */
+ val = -15;
+ len = 5;
+ } else if ((i & 0xF8) == 0xE8) {
+ /* code 11101 */
+ val = 15;
+ len = 5;
+ } else if ((i & 0xFC) == 0xF0) {
+ /* code 111100 */
+ val = -20;
+ len = 6;
+ } else if ((i & 0xFC) == 0xF4) {
+ /* code 111101 */
+ val = 20;
+ len = 6;
+ } else if ((i & 0xF8) == 0xF8) {
+ /* code 11111xxxxxx */
+ is_abs = 1;
+ val = 0;
+ len = 5;
+ }
+ table[i].is_abs = is_abs;
+ table[i].val = val;
+ table[i].len = len;
+ }
+}
+
+/* auto gain and exposure algorithm based on the knee algorithm described here:
+ http://ytse.tricolour.net/docs/LowLightOptimization.html */
+static void pac207_do_auto_gain(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int i, steps, desired_avg_lum;
+ int orig_gain = sd->gain;
+ int orig_exposure = sd->exposure;
+ int avg_lum = atomic_read(&sd->avg_lum);
+
+ if (!sd->autogain || avg_lum == -1)
+ return;
+
+ if (sd->autogain_ignore_frames > 0) {
+ sd->autogain_ignore_frames--;
+ return;
+ }
+
+ /* correct desired lumination for the configured brightness */
+ desired_avg_lum = 100 + sd->brightness / 2;
+
+ /* If we are of a multiple of deadzone, do multiple step to reach the
+ desired lumination fast (with the risc of a slight overshoot) */
+ steps = abs(desired_avg_lum - avg_lum) / PAC207_AUTOGAIN_DEADZONE;
+
+ for (i = 0; i < steps; i++) {
+ if (avg_lum > desired_avg_lum) {
+ if (sd->gain > PAC207_GAIN_KNEE) {
+ sd->gain--;
+ } else if (sd->exposure > PAC207_EXPOSURE_KNEE) {
+ sd->exposure--;
+ } else if (sd->gain > PAC207_GAIN_DEFAULT) {
+ sd->gain--;
+ } else if (sd->exposure > PAC207_EXPOSURE_MIN) {
+ sd->exposure--;
+ } else if (sd->gain > PAC207_GAIN_MIN) {
+ sd->gain--;
+ } else
+ break;
+ } else {
+ if (sd->gain < PAC207_GAIN_DEFAULT) {
+ sd->gain++;
+ } else if (sd->exposure < PAC207_EXPOSURE_KNEE) {
+ sd->exposure++;
+ } else if (sd->gain < PAC207_GAIN_KNEE) {
+ sd->gain++;
+ } else if (sd->exposure < PAC207_EXPOSURE_MAX) {
+ sd->exposure++;
+ } else if (sd->gain < PAC207_GAIN_MAX) {
+ sd->gain++;
+ } else
+ break;
+ }
+ }
+
+ if (sd->exposure != orig_exposure || sd->gain != orig_gain) {
+ if (sd->exposure != orig_exposure)
+ pac207_write_reg(gspca_dev, 0x0002, sd->exposure);
+ if (sd->gain != orig_gain)
+ pac207_write_reg(gspca_dev, 0x000e, sd->gain);
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* load reg to sen */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+ sd->autogain_ignore_frames = PAC207_AUTOGAIN_IGNORE_FRAMES;
+ }
+}
+
+static unsigned char *pac207_find_sof(struct gspca_dev *gspca_dev,
+ unsigned char *m, int len)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int i;
+
+ /* Search for the SOF marker (fixed part) in the header */
+ for (i = 0; i < len; i++) {
+ if (m[i] == pac207_sof_marker[sd->sof_read]) {
+ sd->sof_read++;
+ if (sd->sof_read == sizeof(pac207_sof_marker)) {
+ PDEBUG(D_STREAM,
+ "SOF found, bytes to analyze: %u."
+ " Frame starts at byte #%u",
+ len, i + 1);
+ sd->sof_read = 0;
+ return m + i + 1;
+ }
+ } else
+ sd->sof_read = 0;
+ }
+
+ return NULL;
+}
+
+static int pac207_decompress_row(struct gspca_dev *gspca_dev,
+ struct gspca_frame *f, unsigned char *cdata, int len)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct pac207_decoder_state *decoder_state = &sd->decoder_state;
+ unsigned char *outp = decoder_state->line_decode_buf +
+ decoder_state->line_read;
+ int val, bitlen, bitpos = -decoder_state->no_remaining_bits;
+ u8 code;
+
+ /* first two pixels are stored as raw 8-bit */
+ while (decoder_state->line_read < 2) {
+ *outp++ = *cdata++;
+ decoder_state->line_read++;
+ len--;
+ if (len == 0)
+ return 0;
+ }
+
+ while (decoder_state->line_read < gspca_dev->width) {
+ if (bitpos < 0) {
+ code = decoder_state->remaining_bits << (8 + bitpos) |
+ cdata[0] >> -bitpos;
+ } else {
+ u8 *addr = cdata + bitpos / 8;
+ code = addr[0] << (bitpos & 7) |
+ addr[1] >> (8 - (bitpos & 7));
+ }
+
+ bitlen = decoder_state->get_abs ?
+ 6 : table[code].len;
+
+ /* Stop decompressing if we're out of input data */
+ if ((bitpos + bitlen) > (len * 8))
+ break;
+
+ if (decoder_state->get_abs) {
+ *outp++ = code & 0xFC;
+ decoder_state->line_read++;
+ decoder_state->get_abs = 0;
+ } else {
+ if (table[code].is_abs)
+ decoder_state->get_abs = 1;
+ else {
+ /* relative to left pixel */
+ val = outp[-2] +
+ table[code].val;
+ if (val > 0xff)
+ val = 0xff;
+ else if (val < 0)
+ val = 0;
+ *outp++ = val;
+ decoder_state->line_read++;
+ }
+ }
+ bitpos += bitlen;
+ }
+
+ if (decoder_state->line_read == gspca_dev->width) {
+ int compressed_line_len;
+
+ gspca_frame_add(gspca_dev, INTER_PACKET, f,
+ decoder_state->line_decode_buf,
+ gspca_dev->width);
+
+ /* completely decompressed line, round pos to nearest word */
+ compressed_line_len = ((decoder_state->processed_bytes * 8 +
+ bitpos + 15) / 16) * 2;
+
+ len -= compressed_line_len - decoder_state->processed_bytes;
+ if (len < 0) {
+ decoder_state->discard_byte = 1;
+ len = 0;
+ }
+ } else {
+ decoder_state->processed_bytes += len;
+ decoder_state->remaining_bits = cdata[bitpos/8];
+ decoder_state->no_remaining_bits = (8 - bitpos) & 7;
+ len = 0;
+ }
+
+ return len;
+}
+
+static void pac207_decode_line_init(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct pac207_decoder_state *decoder_state = &sd->decoder_state;
+
+ decoder_state->line_read = 0;
+ decoder_state->line_state = LINE_HEADER1;
+ decoder_state->processed_bytes = 0;
+ decoder_state->no_remaining_bits = 0;
+ decoder_state->get_abs = 0;
+}
+
+static void pac207_decode_frame_init(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct pac207_decoder_state *decoder_state = &sd->decoder_state;
+
+ decoder_state->header_read = 0;
+ decoder_state->discard_byte = 0;
+
+ pac207_decode_line_init(gspca_dev);
+}
+
+static int pac207_decode_frame_data(struct gspca_dev *gspca_dev,
+ struct gspca_frame *f, unsigned char *data, int len)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct pac207_decoder_state *decoder_state = &sd->decoder_state;
+ int needed = 0;
+
+ /* first 11 bytes after sof marker: frame header */
+ if (decoder_state->header_read < 11) {
+ /* get average lumination from frame header (byte 5) */
+ if (decoder_state->header_read < 5) {
+ needed = 5 - decoder_state->header_read;
+ if (len >= needed)
+ atomic_set(&sd->avg_lum, data[needed-1]);
+ }
+ /* skip the rest of the header */
+ needed = 11 - decoder_state->header_read;
+ if (len <= needed) {
+ decoder_state->header_read += len;
+ return 0;
+ }
+ data += needed;
+ len -= needed;
+ decoder_state->header_read = 11;
+ }
+
+ while (len) {
+ if (decoder_state->discard_byte) {
+ data++;
+ len--;
+ decoder_state->discard_byte = 0;
+ continue;
+ }
+
+ switch (decoder_state->line_state) {
+ case LINE_HEADER1:
+ decoder_state->line_marker = data[0] << 8;
+ decoder_state->line_state = LINE_HEADER2;
+ needed = 1;
+ break;
+ case LINE_HEADER2:
+ decoder_state->line_marker |= data[0];
+ switch (decoder_state->line_marker) {
+ case 0x0FF0:
+ decoder_state->line_state = LINE_UNCOMPRESSED;
+ break;
+ case 0x1EE1:
+ decoder_state->line_state = LINE_COMPRESSED;
+ break;
+ default:
+ PDEBUG(D_STREAM,
+ "Error unknown line-header %04X",
+ (int) decoder_state->line_marker);
+ gspca_dev->last_packet_type = DISCARD_PACKET;
+ return 0;
+ }
+ needed = 1;
+ break;
+ case LINE_UNCOMPRESSED:
+ needed = gspca_dev->width - decoder_state->line_read;
+ if (needed > len)
+ needed = len;
+ gspca_frame_add(gspca_dev, INTER_PACKET, f, data,
+ needed);
+ decoder_state->line_read += needed;
+ break;
+ case LINE_COMPRESSED:
+ needed = len -
+ pac207_decompress_row(gspca_dev, f, data, len);
+ break;
+ }
+
+ data += needed;
+ len -= needed;
+
+ if (decoder_state->line_read == gspca_dev->width) {
+ if ((f->data_end - f->data) ==
+ (gspca_dev->width * gspca_dev->height)) {
+ /* eureka we've got a frame */
+ return 1;
+ }
+ pac207_decode_line_init(gspca_dev);
+ }
+ }
+
+ return 0;
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame,
+ unsigned char *data,
+ int len)
+{
+ unsigned char *sof;
+ int n;
+
+ sof = pac207_find_sof(gspca_dev, data, len);
+
+ if (sof) {
+ /* finish decoding current frame */
+ if (gspca_dev->last_packet_type == INTER_PACKET) {
+ n = sof - data;
+ if (n > sizeof(pac207_sof_marker))
+ n -= sizeof(pac207_sof_marker);
+ else
+ n = 0;
+ n = pac207_decode_frame_data(gspca_dev, frame,
+ data, n);
+ if (n)
+ frame = gspca_frame_add(gspca_dev,
+ LAST_PACKET,
+ frame,
+ NULL,
+ 0);
+ else
+ PDEBUG(D_STREAM, "Incomplete frame");
+ }
+ pac207_decode_frame_init(gspca_dev);
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL,
+ 0);
+ len -= sof - data;
+ data = sof;
+ }
+
+ if (gspca_dev->last_packet_type == DISCARD_PACKET)
+ return;
+
+ n = pac207_decode_frame_data(gspca_dev, frame, data, len);
+ if (n)
+ frame = gspca_frame_add(gspca_dev, LAST_PACKET,
+ frame, NULL, 0);
+}
+
+static void setbrightness(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ pac207_write_reg(gspca_dev, 0x08, sd->brightness);
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+}
+
+static void setexposure(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ pac207_write_reg(gspca_dev, 0x02, sd->exposure);
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+}
+
+static void setgain(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ pac207_write_reg(gspca_dev, 0x0e, sd->gain);
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+}
+
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->brightness = val;
+ if (gspca_dev->streaming)
+ setbrightness(gspca_dev);
+ return 0;
+}
+
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->brightness;
+ return 0;
+}
+
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ /* don't allow mucking with exposure when using autogain */
+ if (sd->autogain)
+ return -EINVAL;
+
+ sd->exposure = val;
+ if (gspca_dev->streaming)
+ setexposure(gspca_dev);
+ return 0;
+}
+
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->exposure;
+ return 0;
+}
+
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ /* don't allow mucking with gain when using autogain */
+ if (sd->autogain)
+ return -EINVAL;
+
+ sd->gain = val;
+ if (gspca_dev->streaming)
+ setgain(gspca_dev);
+ return 0;
+}
+
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->gain;
+ return 0;
+}
+
+static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->autogain = val;
+ /* when switching to autogain set defaults to make sure
+ we are on a valid point of the autogain gain /
+ exposure knee graph, and give this change time to
+ take effect before doing autogain. */
+ if (sd->autogain) {
+ sd->exposure = PAC207_EXPOSURE_DEFAULT;
+ sd->gain = PAC207_GAIN_DEFAULT;
+ if (gspca_dev->streaming) {
+ sd->autogain_ignore_frames =
+ PAC207_AUTOGAIN_IGNORE_FRAMES;
+ setexposure(gspca_dev);
+ setgain(gspca_dev);
+ }
+ }
+
+ return 0;
+}
+
+static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->autogain;
+ return 0;
+}
+
+/* sub-driver description */
+static struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .ctrls = sd_ctrls,
+ .nctrls = ARRAY_SIZE(sd_ctrls),
+ .config = sd_config,
+ .open = sd_open,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .stop0 = sd_stop0,
+ .close = sd_close,
+ .dq_callback = pac207_do_auto_gain,
+ .pkt_scan = sd_pkt_scan,
+};
+
+/* -- module initialisation -- */
+#define DVNM(name) .driver_info = (kernel_ulong_t) name
+static __devinitdata struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x041e, 0x4028), DVNM("Creative Webcam Vista Plus")},
+ {USB_DEVICE(0x093a, 0x2460), DVNM("PAC207 Qtec Webcam 100")},
+ {USB_DEVICE(0x093a, 0x2463), DVNM("Philips spc200nc pac207")},
+ {USB_DEVICE(0x093a, 0x2464), DVNM("Labtec Webcam 1200")},
+ {USB_DEVICE(0x093a, 0x2468), DVNM("PAC207")},
+ {USB_DEVICE(0x093a, 0x2470), DVNM("Genius GF112")},
+ {USB_DEVICE(0x093a, 0x2471), DVNM("PAC207 Genius VideoCam ge111")},
+ {USB_DEVICE(0x093a, 0x2472), DVNM("PAC207 Genius VideoCam ge110")},
+ {USB_DEVICE(0x2001, 0xf115), DVNM("D-Link DSB-C120")},
+ {}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ PDEBUG(D_PROBE, "camera probe");
+ return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd));
+}
+
+static struct usb_driver sd_driver = {
+ .name = MODULE_NAME,
+ .id_table = device_table,
+ .probe = sd_probe,
+ .disconnect = gspca_disconnect,
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+ init_pixart_decoder();
+ if (usb_register(&sd_driver) < 0)
+ return -1;
+ PDEBUG(D_PROBE, "v%s registered", version);
+ return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+ usb_deregister(&sd_driver);
+ PDEBUG(D_PROBE, "deregistered");
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);
diff --git a/linux/drivers/media/video/gspca/stk014.c b/linux/drivers/media/video/gspca/stk014.c
new file mode 100644
index 000000000..df2e3eb0c
--- /dev/null
+++ b/linux/drivers/media/video/gspca/stk014.c
@@ -0,0 +1,580 @@
+/*
+ * Syntek DV4000 (STK014) subdriver
+ *
+ * Copyright (C) Jean-Francois Moine (http://moinejf.free.fr)
+ *
+ * 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
+ * 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
+ *
+ */
+
+#define MODULE_NAME "stk014"
+
+#include "gspca.h"
+#include "jpeg.h"
+
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0)
+static const char version[] = "0.1.0";
+
+MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
+MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ unsigned char brightness;
+ unsigned char contrast;
+ unsigned char colors;
+};
+
+/* global parameters */
+static int lightfreq = 50;
+static int sd_quant = 7; /* <= 4 KO - 7: good (enough!) */
+
+/* V4L2 controls supported by the driver */
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
+
+static struct ctrl sd_ctrls[] = {
+#define SD_BRIGHTNESS 0
+ {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ },
+ .set = sd_setbrightness,
+ .get = sd_getbrightness,
+ },
+#define SD_CONTRAST 1
+ {
+ {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contrast",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ },
+ .set = sd_setcontrast,
+ .get = sd_getcontrast,
+ },
+#define SD_COLOR 2
+ {
+ {
+ .id = V4L2_CID_SATURATION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Saturation",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ },
+ .set = sd_setcolors,
+ .get = sd_getcolors,
+ },
+#if 0
+/*fixme: this asks for query_menu */
+#define SD_FREQ 3
+ {
+ {
+ .id = GSPCA_V4L2_CID_LIGHTFREQ,
+ .type = V4L2_CTRL_TYPE_MENU,
+ .name = "Light frequency filter",
+ .minimum = 0,
+ .maximum = 2, /* 0: 0, 1: 50Hz, 2:60Hz */
+ .step = 1,
+ .default_value = 0,
+ },
+ .set = sd_setfreq,
+ .get = sd_getfreq,
+ },
+#endif
+};
+
+static struct cam_mode vga_mode[] = {
+ {V4L2_PIX_FMT_JPEG, 320, 240},
+ {V4L2_PIX_FMT_JPEG, 640, 480},
+};
+
+/* -- read a register -- */
+static int reg_read(struct gspca_dev *gspca_dev,
+ __u16 index, __u8 *buf)
+{
+ int ret;
+ struct usb_device *dev = gspca_dev->dev;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0x00,
+ index,
+ buf, 1,
+ 500);
+ if (ret < 0)
+ PDEBUG(D_ERR, "reg_read err %d", ret);
+ return ret;
+}
+
+/* -- write a register -- */
+static int reg_write(struct gspca_dev *gspca_dev,
+ __u16 index, __u16 value)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ int ret;
+
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x01,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value,
+ index,
+ NULL,
+ 0,
+ 500);
+ if (ret < 0)
+ PDEBUG(D_ERR, "reg_write err %d", ret);
+ return ret;
+}
+
+/* -- get a value -- */
+static int rcv_val(struct gspca_dev *gspca_dev,
+ int ads,
+ int len)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ int alen, ret;
+ unsigned char bulk_buf[4];
+
+ reg_write(gspca_dev, 0x634, (ads >> 16) & 0xff);
+ reg_write(gspca_dev, 0x635, (ads >> 8) & 0xff);
+ reg_write(gspca_dev, 0x636, ads & 0xff);
+ reg_write(gspca_dev, 0x637, 0);
+ reg_write(gspca_dev, 0x638, len & 0xff);
+ reg_write(gspca_dev, 0x639, len >> 8);
+ reg_write(gspca_dev, 0x63a, 0);
+ reg_write(gspca_dev, 0x63b, 0);
+ reg_write(gspca_dev, 0x630, 5);
+ if (len > sizeof bulk_buf)
+ return -1;
+ ret = usb_bulk_msg(dev,
+ usb_rcvbulkpipe(dev, 5),
+ bulk_buf,
+ len,
+ &alen,
+ 500); /* timeout in milliseconds */
+ return ret;
+}
+
+/* -- send a value -- */
+static int snd_val(struct gspca_dev *gspca_dev,
+ int ads,
+ unsigned int val)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ int alen, ret;
+ __u8 value, seq;
+ unsigned char bulk_buf[4];
+
+ if (ads == 0x003f08) {
+ ret = reg_read(gspca_dev, 0x0704, &value);
+ if (ret < 0)
+ goto ko;
+ ret = reg_read(gspca_dev, 0x0705, &seq);
+ if (ret < 0)
+ goto ko;
+ ret = reg_read(gspca_dev, 0x0650, &value);
+ if (ret < 0)
+ goto ko;
+ reg_write(gspca_dev, 0x654, seq);
+ } else
+ reg_write(gspca_dev, 0x654, (ads >> 16) & 0xff);
+ reg_write(gspca_dev, 0x655, (ads >> 8) & 0xff);
+ reg_write(gspca_dev, 0x656, ads & 0xff);
+ reg_write(gspca_dev, 0x657, 0);
+ reg_write(gspca_dev, 0x658, 0x04); /* size */
+ reg_write(gspca_dev, 0x659, 0);
+ reg_write(gspca_dev, 0x65a, 0);
+ reg_write(gspca_dev, 0x65b, 0);
+ reg_write(gspca_dev, 0x650, 5);
+ bulk_buf[0] = (val >> 24) & 0xff;
+ bulk_buf[1] = (val >> 16) & 0xff;
+ bulk_buf[2] = (val >> 8) & 0xff;
+ bulk_buf[3] = val & 0xff;
+ ret = usb_bulk_msg(dev,
+ usb_sndbulkpipe(dev, 6),
+ bulk_buf,
+ 4,
+ &alen,
+ 500); /* timeout in milliseconds */
+ if (ret < 0)
+ goto ko;
+ if (ads == 0x003f08) {
+ seq += 4;
+ seq &= 0x3f;
+ reg_write(gspca_dev, 0x705, seq);
+ }
+ return ret;
+ko:
+ PDEBUG(D_ERR, "snd_val err %d", ret);
+ return ret;
+}
+
+/* set a camera parameter */
+static int set_par(struct gspca_dev *gspca_dev,
+ int parval)
+{
+ return snd_val(gspca_dev, 0x003f08, parval);
+}
+
+static void setbrightness(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int parval;
+
+ PDEBUG(D_CONF, "brightness: %d", sd->brightness);
+ parval = 0x06000000 /* whiteness */
+ + (sd->brightness << 16);
+ set_par(gspca_dev, parval);
+}
+
+static void setcontrast(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int parval;
+
+ PDEBUG(D_CONF, "contrast: %d", sd->contrast);
+ parval = 0x07000000 /* contrast */
+ + (sd->contrast << 16);
+ set_par(gspca_dev, parval);
+}
+
+static void setcolors(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int parval;
+
+ PDEBUG(D_CONF, "saturation: %d",
+ sd->colors);
+ parval = 0x08000000 /* saturation */
+ + (sd->colors << 16);
+ set_par(gspca_dev, parval);
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct cam *cam = &gspca_dev->cam;
+
+ cam->dev_name = (char *) id->driver_info;
+ cam->epaddr = 0x02;
+ gspca_dev->cam.cam_mode = vga_mode;
+ gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
+ sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
+ sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
+ sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
+ return 0;
+}
+
+/* this function is called at open time */
+static int sd_open(struct gspca_dev *gspca_dev)
+{
+ __u8 value;
+ int ret;
+
+ /* check if the device responds */
+ usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
+ ret = reg_read(gspca_dev, 0x0740, &value);
+ if (ret < 0)
+ return ret;
+ if (value != 0xff) {
+ PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", value);
+ return -1;
+ }
+ return 0;
+}
+
+/* -- start the camera -- */
+static void sd_start(struct gspca_dev *gspca_dev)
+{
+ __u8 dum;
+ int ret, value;
+
+ /* work on alternate 1 */
+ usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
+
+ set_par(gspca_dev, 0x10000000);
+ set_par(gspca_dev, 0x00000000);
+ set_par(gspca_dev, 0x8002e001);
+ set_par(gspca_dev, 0x14000000);
+ if (gspca_dev->width > 320)
+ value = 0x8002e001; /* 640x480 */
+ else
+ value = 0x4001f000; /* 320x240 */
+ set_par(gspca_dev, value);
+ ret = usb_set_interface(gspca_dev->dev,
+ gspca_dev->iface,
+ gspca_dev->alt);
+ if (ret < 0)
+ goto out;
+ ret = reg_read(gspca_dev, 0x0630, &dum);
+ if (ret < 0)
+ goto out;
+ rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
+ ret = reg_read(gspca_dev, 0x0650, &dum);
+ if (ret < 0)
+ goto out;
+ snd_val(gspca_dev, 0x000020, 0xffffffff);
+ reg_write(gspca_dev, 0x0620, 0);
+ reg_write(gspca_dev, 0x0630, 0);
+ reg_write(gspca_dev, 0x0640, 0);
+ reg_write(gspca_dev, 0x0650, 0);
+ reg_write(gspca_dev, 0x0660, 0);
+ setbrightness(gspca_dev); /* whiteness */
+ setcontrast(gspca_dev); /* contrast */
+ setcolors(gspca_dev); /* saturation */
+ set_par(gspca_dev, 0x09800000); /* Red ? */
+ set_par(gspca_dev, 0x0a800000); /* Green ? */
+ set_par(gspca_dev, 0x0b800000); /* Blue ? */
+ set_par(gspca_dev, 0x0d030000); /* Gamma ? */
+ set_par(gspca_dev, lightfreq == 60
+ ? 0x33780000 /* 60 Hz */
+ : 0x33640000); /* 50 Hz */
+
+ /* start the video flow */
+ set_par(gspca_dev, 0x01000000);
+ set_par(gspca_dev, 0x01000000);
+ PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
+ return;
+out:
+ PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ __u8 value;
+
+ set_par(gspca_dev, 0x02000000);
+ set_par(gspca_dev, 0x02000000);
+ usb_set_interface(dev, gspca_dev->iface, 1);
+ reg_read(gspca_dev, 0x0630, &value);
+ rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
+ reg_read(gspca_dev, 0x0650, &value);
+ snd_val(gspca_dev, 0x000020, 0xffffffff);
+ reg_write(gspca_dev, 0x0620, 0);
+ reg_write(gspca_dev, 0x0630, 0);
+ reg_write(gspca_dev, 0x0640, 0);
+ reg_write(gspca_dev, 0x0650, 0);
+ reg_write(gspca_dev, 0x0660, 0);
+ PDEBUG(D_STREAM, "camera stopped");
+}
+
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_close(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame, /* target */
+ unsigned char *data, /* isoc packet */
+ int len) /* iso packet length */
+{
+ int l;
+ static unsigned char ffd9[] = {0xff, 0xd9};
+
+ /* a frame starts with:
+ * - 0xff 0xfe
+ * - 0x08 0x00 // length (little endian ?!)
+ * - 4 bytes = size of whole frame (big endian - including header)
+ * - 0x00 0x0c
+ * - 0xff 0xd8
+ * - .. JPEG image with escape sequences (ff 00)
+ */
+ if (data[0] == 0xff && data[1] == 0xfe) {
+ if (gspca_dev->last_packet_type == INTER_PACKET) {
+ PDEBUG(D_ERR|D_FRAM, "sof actual l: %d init l: %d",
+ frame->data_end - frame->data,
+ frame->v4l2_buf.bytesused);
+ }
+
+ /* put the JPEG headaer */
+ jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
+
+ /* beginning of the frame */
+#define STKHDRSZ 12
+ l = (data[4] << 24) /* frame size */
+ + (data[5] << 16)
+ + (data[6] << 8)
+ + data[7]
+ - STKHDRSZ
+ + (frame->data_end - frame->data)
+ + 2; /* EOF (ff d9) */
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ data + STKHDRSZ, len - STKHDRSZ);
+#undef STKHDRSZ
+ frame->v4l2_buf.bytesused = l;
+ return;
+ }
+ if (gspca_dev->last_packet_type != INTER_PACKET) {
+ if (gspca_dev->last_packet_type == LAST_PACKET) {
+ PDEBUG(D_ERR|D_PACK, "mof actual l: %d init l: %d",
+ frame->data_end - frame->data,
+ frame->v4l2_buf.bytesused);
+ }
+ return;
+ }
+
+ /* intermediate packet */
+ l = frame->data_end - frame->data;
+ if (len < frame->v4l2_buf.bytesused - 2 - l) {
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ data, len);
+ return;
+ }
+
+ /* last packet */
+ if (len > frame->v4l2_buf.bytesused - 2 - l)
+ len = frame->v4l2_buf.bytesused - 2 - l;
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
+ gspca_frame_add(gspca_dev, LAST_PACKET, frame, ffd9, 2);
+}
+
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->brightness = val;
+ if (gspca_dev->streaming)
+ setbrightness(gspca_dev);
+ return 0;
+}
+
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->brightness;
+ return 0;
+}
+
+static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->contrast = val;
+ if (gspca_dev->streaming)
+ setcontrast(gspca_dev);
+ return 0;
+}
+
+static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->contrast;
+ return 0;
+}
+
+static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->colors = val;
+ if (gspca_dev->streaming)
+ setcolors(gspca_dev);
+ return 0;
+}
+
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->colors;
+ return 0;
+}
+
+/* sub-driver description */
+static struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .ctrls = sd_ctrls,
+ .nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
+ .config = sd_config,
+ .open = sd_open,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .stop0 = sd_stop0,
+ .close = sd_close,
+ .pkt_scan = sd_pkt_scan,
+};
+
+/* -- module initialisation -- */
+#define DVNM(name) .driver_info = (kernel_ulong_t) name
+static __devinitdata struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
+ {}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ PDEBUG(D_PROBE, "camera probe");
+ return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd));
+}
+
+static struct usb_driver sd_driver = {
+ .name = MODULE_NAME,
+ .id_table = device_table,
+ .probe = sd_probe,
+ .disconnect = gspca_disconnect,
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+ if (usb_register(&sd_driver) < 0)
+ return -1;
+ info("v%s registered", version);
+ return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+ usb_deregister(&sd_driver);
+ info("deregistered");
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);
+
+module_param(lightfreq, int, 0644);
+MODULE_PARM_DESC(lightfreq, "Light frequency 50 or 60 Hz");
+module_param_named(quant, sd_quant, int, 0644);
+MODULE_PARM_DESC(quant, "Quantization index (0..8)");
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-09 11:57:05 +0000