Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
new file mode 100644
index 0000000..2021e09
--- /dev/null
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -0,0 +1,436 @@
+/*
+ * $Id: saa7134-empress.c,v 1.10 2005/02/03 10:24:33 kraxel Exp $
+ *
+ * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include "saa7134-reg.h"
+#include "saa7134.h"
+
+#include <media/saa6752hs.h>
+
+/* ------------------------------------------------------------------ */
+
+MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
+MODULE_LICENSE("GPL");
+
+static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
+module_param_array(empress_nr, int, NULL, 0444);
+MODULE_PARM_DESC(empress_nr,"ts device number");
+
+static unsigned int debug = 0;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug,"enable debug messages");
+
+#define dprintk(fmt, arg...) if (debug) \
+ printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
+
+/* ------------------------------------------------------------------ */
+
+static void ts_reset_encoder(struct saa7134_dev* dev)
+{
+ if (!dev->empress_started)
+ return;
+
+ saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
+ msleep(10);
+ saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
+ msleep(100);
+ dev->empress_started = 0;
+}
+
+static int ts_init_encoder(struct saa7134_dev* dev)
+{
+ ts_reset_encoder(dev);
+ saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL);
+ dev->empress_started = 1;
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int ts_open(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ struct saa7134_dev *h,*dev = NULL;
+ struct list_head *list;
+ int err;
+
+ list_for_each(list,&saa7134_devlist) {
+ h = list_entry(list, struct saa7134_dev, devlist);
+ if (h->empress_dev && h->empress_dev->minor == minor)
+ dev = h;
+ }
+ if (NULL == dev)
+ return -ENODEV;
+
+ dprintk("open minor=%d\n",minor);
+ err = -EBUSY;
+ if (down_trylock(&dev->empress_tsq.lock))
+ goto done;
+ if (dev->empress_users)
+ goto done_up;
+
+ dev->empress_users++;
+ file->private_data = dev;
+ err = 0;
+
+done_up:
+ up(&dev->empress_tsq.lock);
+done:
+ return err;
+}
+
+static int ts_release(struct inode *inode, struct file *file)
+{
+ struct saa7134_dev *dev = file->private_data;
+
+ if (dev->empress_tsq.streaming)
+ videobuf_streamoff(&dev->empress_tsq);
+ down(&dev->empress_tsq.lock);
+ if (dev->empress_tsq.reading)
+ videobuf_read_stop(&dev->empress_tsq);
+ videobuf_mmap_free(&dev->empress_tsq);
+ dev->empress_users--;
+
+ /* stop the encoder */
+ ts_reset_encoder(dev);
+
+ up(&dev->empress_tsq.lock);
+ return 0;
+}
+
+static ssize_t
+ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
+{
+ struct saa7134_dev *dev = file->private_data;
+
+ if (!dev->empress_started)
+ ts_init_encoder(dev);
+
+ return videobuf_read_stream(&dev->empress_tsq,
+ data, count, ppos, 0,
+ file->f_flags & O_NONBLOCK);
+}
+
+static unsigned int
+ts_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct saa7134_dev *dev = file->private_data;
+
+ return videobuf_poll_stream(file, &dev->empress_tsq, wait);
+}
+
+
+static int
+ts_mmap(struct file *file, struct vm_area_struct * vma)
+{
+ struct saa7134_dev *dev = file->private_data;
+
+ return videobuf_mmap_mapper(&dev->empress_tsq, vma);
+}
+
+/*
+ * This function is _not_ called directly, but from
+ * video_generic_ioctl (and maybe others). userspace
+ * copying is done already, arg is a kernel pointer.
+ */
+static int ts_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ struct saa7134_dev *dev = file->private_data;
+
+ if (debug > 1)
+ saa7134_print_ioctl(dev->name,cmd);
+ switch (cmd) {
+ case VIDIOC_QUERYCAP:
+ {
+ struct v4l2_capability *cap = arg;
+
+ memset(cap,0,sizeof(*cap));
+ strcpy(cap->driver, "saa7134");
+ strlcpy(cap->card, saa7134_boards[dev->board].name,
+ sizeof(cap->card));
+ sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
+ cap->version = SAA7134_VERSION_CODE;
+ cap->capabilities =
+ V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_READWRITE |
+ V4L2_CAP_STREAMING;
+ return 0;
+ }
+
+ /* --- input switching --------------------------------------- */
+ case VIDIOC_ENUMINPUT:
+ {
+ struct v4l2_input *i = arg;
+
+ if (i->index != 0)
+ return -EINVAL;
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+ strcpy(i->name,"CCIR656");
+ return 0;
+ }
+ case VIDIOC_G_INPUT:
+ {
+ int *i = arg;
+ *i = 0;
+ return 0;
+ }
+ case VIDIOC_S_INPUT:
+ {
+ int *i = arg;
+
+ if (*i != 0)
+ return -EINVAL;
+ return 0;
+ }
+ /* --- capture ioctls ---------------------------------------- */
+
+ case VIDIOC_ENUM_FMT:
+ {
+ struct v4l2_fmtdesc *f = arg;
+ int index;
+
+ index = f->index;
+ if (index != 0)
+ return -EINVAL;
+
+ memset(f,0,sizeof(*f));
+ f->index = index;
+ strlcpy(f->description, "MPEG TS", sizeof(f->description));
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ f->pixelformat = V4L2_PIX_FMT_MPEG;
+ return 0;
+ }
+
+ case VIDIOC_G_FMT:
+ {
+ struct v4l2_format *f = arg;
+
+ memset(f,0,sizeof(*f));
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ /* FIXME: translate subsampling type EMPRESS into
+ * width/height: */
+ f->fmt.pix.width = 720; /* D1 */
+ f->fmt.pix.height = 576;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
+ return 0;
+ }
+
+ case VIDIOC_S_FMT:
+ {
+ struct v4l2_format *f = arg;
+
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ /*
+ FIXME: translate and round width/height into EMPRESS
+ subsample type:
+
+ type | PAL | NTSC
+ ---------------------------
+ SIF | 352x288 | 352x240
+ 1/2 D1 | 352x576 | 352x480
+ 2/3 D1 | 480x576 | 480x480
+ D1 | 720x576 | 720x480
+ */
+
+ f->fmt.pix.width = 720; /* D1 */
+ f->fmt.pix.height = 576;
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets;
+ return 0;
+ }
+
+ case VIDIOC_REQBUFS:
+ return videobuf_reqbufs(&dev->empress_tsq,arg);
+
+ case VIDIOC_QUERYBUF:
+ return videobuf_querybuf(&dev->empress_tsq,arg);
+
+ case VIDIOC_QBUF:
+ return videobuf_qbuf(&dev->empress_tsq,arg);
+
+ case VIDIOC_DQBUF:
+ return videobuf_dqbuf(&dev->empress_tsq,arg,
+ file->f_flags & O_NONBLOCK);
+
+ case VIDIOC_STREAMON:
+ return videobuf_streamon(&dev->empress_tsq);
+
+ case VIDIOC_STREAMOFF:
+ return videobuf_streamoff(&dev->empress_tsq);
+
+ case VIDIOC_QUERYCTRL:
+ case VIDIOC_G_CTRL:
+ case VIDIOC_S_CTRL:
+ return saa7134_common_ioctl(dev, cmd, arg);
+
+ case VIDIOC_S_MPEGCOMP:
+ saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
+ ts_init_encoder(dev);
+ return 0;
+ case VIDIOC_G_MPEGCOMP:
+ saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static int ts_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
+}
+
+static struct file_operations ts_fops =
+{
+ .owner = THIS_MODULE,
+ .open = ts_open,
+ .release = ts_release,
+ .read = ts_read,
+ .poll = ts_poll,
+ .mmap = ts_mmap,
+ .ioctl = ts_ioctl,
+ .llseek = no_llseek,
+};
+
+/* ----------------------------------------------------------- */
+
+static struct video_device saa7134_empress_template =
+{
+ .name = "saa7134-empress",
+ .type = 0 /* FIXME */,
+ .type2 = 0 /* FIXME */,
+ .hardware = 0,
+ .fops = &ts_fops,
+ .minor = -1,
+};
+
+static void empress_signal_update(void* data)
+{
+ struct saa7134_dev* dev = (struct saa7134_dev*) data;
+
+ if (dev->nosignal) {
+ dprintk("no video signal\n");
+ ts_reset_encoder(dev);
+ } else {
+ dprintk("video signal acquired\n");
+ if (dev->empress_users)
+ ts_init_encoder(dev);
+ }
+}
+
+static void empress_signal_change(struct saa7134_dev *dev)
+{
+ schedule_work(&dev->empress_workqueue);
+}
+
+
+static int empress_init(struct saa7134_dev *dev)
+{
+ int err;
+
+ dprintk("%s: %s\n",dev->name,__FUNCTION__);
+ dev->empress_dev = video_device_alloc();
+ if (NULL == dev->empress_dev)
+ return -ENOMEM;
+ *(dev->empress_dev) = saa7134_empress_template;
+ dev->empress_dev->dev = &dev->pci->dev;
+ dev->empress_dev->release = video_device_release;
+ snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
+ "%s empress (%s)", dev->name,
+ saa7134_boards[dev->board].name);
+
+ INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev);
+
+ err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
+ empress_nr[dev->nr]);
+ if (err < 0) {
+ printk(KERN_INFO "%s: can't register video device\n",
+ dev->name);
+ video_device_release(dev->empress_dev);
+ dev->empress_dev = NULL;
+ return err;
+ }
+ printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
+ dev->name,dev->empress_dev->minor & 0x1f);
+
+ videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,
+ dev->pci, &dev->slock,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ V4L2_FIELD_ALTERNATE,
+ sizeof(struct saa7134_buf),
+ dev);
+
+ empress_signal_update(dev);
+ return 0;
+}
+
+static int empress_fini(struct saa7134_dev *dev)
+{
+ dprintk("%s: %s\n",dev->name,__FUNCTION__);
+
+ if (NULL == dev->empress_dev)
+ return 0;
+ flush_scheduled_work();
+ video_unregister_device(dev->empress_dev);
+ dev->empress_dev = NULL;
+ return 0;
+}
+
+static struct saa7134_mpeg_ops empress_ops = {
+ .type = SAA7134_MPEG_EMPRESS,
+ .init = empress_init,
+ .fini = empress_fini,
+ .signal_change = empress_signal_change,
+};
+
+static int __init empress_register(void)
+{
+ return saa7134_ts_register(&empress_ops);
+}
+
+static void __exit empress_unregister(void)
+{
+ saa7134_ts_unregister(&empress_ops);
+}
+
+module_init(empress_register);
+module_exit(empress_unregister);
+
+/* ----------------------------------------------------------- */
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */