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/common/saa7146_fops.c b/drivers/media/common/saa7146_fops.c
new file mode 100644
index 0000000..cb826c9
--- /dev/null
+++ b/drivers/media/common/saa7146_fops.c
@@ -0,0 +1,564 @@
+#include <media/saa7146_vv.h>
+#include <linux/version.h>
+
+#define BOARD_CAN_DO_VBI(dev) (dev->revision != 0 && dev->vv_data->vbi_minor != -1)
+
+/****************************************************************************/
+/* resource management functions, shamelessly stolen from saa7134 driver */
+
+int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit)
+{
+ struct saa7146_dev *dev = fh->dev;
+ struct saa7146_vv *vv = dev->vv_data;
+
+ if (fh->resources & bit) {
+ DEB_D(("already allocated! want: 0x%02x, cur:0x%02x\n",bit,vv->resources));
+ /* have it already allocated */
+ return 1;
+ }
+
+ /* is it free? */
+ down(&dev->lock);
+ if (vv->resources & bit) {
+ DEB_D(("locked! vv->resources:0x%02x, we want:0x%02x\n",vv->resources,bit));
+ /* no, someone else uses it */
+ up(&dev->lock);
+ return 0;
+ }
+ /* it's free, grab it */
+ fh->resources |= bit;
+ vv->resources |= bit;
+ DEB_D(("res: get 0x%02x, cur:0x%02x\n",bit,vv->resources));
+ up(&dev->lock);
+ return 1;
+}
+
+void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
+{
+ struct saa7146_dev *dev = fh->dev;
+ struct saa7146_vv *vv = dev->vv_data;
+
+ if ((fh->resources & bits) != bits)
+ BUG();
+
+ down(&dev->lock);
+ fh->resources &= ~bits;
+ vv->resources &= ~bits;
+ DEB_D(("res: put 0x%02x, cur:0x%02x\n",bits,vv->resources));
+ up(&dev->lock);
+}
+
+
+/********************************************************************************/
+/* common dma functions */
+
+void saa7146_dma_free(struct saa7146_dev *dev,struct saa7146_buf *buf)
+{
+ DEB_EE(("dev:%p, buf:%p\n",dev,buf));
+
+ if (in_interrupt())
+ BUG();
+
+ videobuf_waiton(&buf->vb,0,0);
+ videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma);
+ videobuf_dma_free(&buf->vb.dma);
+ buf->vb.state = STATE_NEEDS_INIT;
+}
+
+
+/********************************************************************************/
+/* common buffer functions */
+
+int saa7146_buffer_queue(struct saa7146_dev *dev,
+ struct saa7146_dmaqueue *q,
+ struct saa7146_buf *buf)
+{
+ assert_spin_locked(&dev->slock);
+ DEB_EE(("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf));
+
+ BUG_ON(!q);
+
+ if (NULL == q->curr) {
+ q->curr = buf;
+ DEB_D(("immediately activating buffer %p\n", buf));
+ buf->activate(dev,buf,NULL);
+ } else {
+ list_add_tail(&buf->vb.queue,&q->queue);
+ buf->vb.state = STATE_QUEUED;
+ DEB_D(("adding buffer %p to queue. (active buffer present)\n", buf));
+ }
+ return 0;
+}
+
+void saa7146_buffer_finish(struct saa7146_dev *dev,
+ struct saa7146_dmaqueue *q,
+ int state)
+{
+ assert_spin_locked(&dev->slock);
+ DEB_EE(("dev:%p, dmaq:%p, state:%d\n", dev, q, state));
+ DEB_EE(("q->curr:%p\n",q->curr));
+
+ BUG_ON(!q->curr);
+
+ /* finish current buffer */
+ if (NULL == q->curr) {
+ DEB_D(("aiii. no current buffer\n"));
+ return;
+ }
+
+ q->curr->vb.state = state;
+ do_gettimeofday(&q->curr->vb.ts);
+ wake_up(&q->curr->vb.done);
+
+ q->curr = NULL;
+}
+
+void saa7146_buffer_next(struct saa7146_dev *dev,
+ struct saa7146_dmaqueue *q, int vbi)
+{
+ struct saa7146_buf *buf,*next = NULL;
+
+ BUG_ON(!q);
+
+ DEB_INT(("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi));
+
+ assert_spin_locked(&dev->slock);
+ if (!list_empty(&q->queue)) {
+ /* activate next one from queue */
+ buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue);
+ list_del(&buf->vb.queue);
+ if (!list_empty(&q->queue))
+ next = list_entry(q->queue.next,struct saa7146_buf, vb.queue);
+ q->curr = buf;
+ DEB_INT(("next buffer: buf:%p, prev:%p, next:%p\n", buf, q->queue.prev,q->queue.next));
+ buf->activate(dev,buf,next);
+ } else {
+ DEB_INT(("no next buffer. stopping.\n"));
+ if( 0 != vbi ) {
+ /* turn off video-dma3 */
+ saa7146_write(dev,MC1, MASK_20);
+ } else {
+ /* nothing to do -- just prevent next video-dma1 transfer
+ by lowering the protection address */
+
+ // fixme: fix this for vflip != 0
+
+ saa7146_write(dev, PROT_ADDR1, 0);
+ saa7146_write(dev, MC2, (MASK_02|MASK_18));
+
+ /* write the address of the rps-program */
+ saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
+ /* turn on rps */
+ saa7146_write(dev, MC1, (MASK_12 | MASK_28));
+
+/*
+ printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
+ printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
+ printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
+ printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
+ printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1));
+ printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
+*/
+ }
+ del_timer(&q->timeout);
+ }
+}
+
+void saa7146_buffer_timeout(unsigned long data)
+{
+ struct saa7146_dmaqueue *q = (struct saa7146_dmaqueue*)data;
+ struct saa7146_dev *dev = q->dev;
+ unsigned long flags;
+
+ DEB_EE(("dev:%p, dmaq:%p\n", dev, q));
+
+ spin_lock_irqsave(&dev->slock,flags);
+ if (q->curr) {
+ DEB_D(("timeout on %p\n", q->curr));
+ saa7146_buffer_finish(dev,q,STATE_ERROR);
+ }
+
+ /* we don't restart the transfer here like other drivers do. when
+ a streaming capture is disabled, the timeout function will be
+ called for the current buffer. if we activate the next buffer now,
+ we mess up our capture logic. if a timeout occurs on another buffer,
+ then something is seriously broken before, so no need to buffer the
+ next capture IMHO... */
+/*
+ saa7146_buffer_next(dev,q);
+*/
+ spin_unlock_irqrestore(&dev->slock,flags);
+}
+
+/********************************************************************************/
+/* file operations */
+
+static int fops_open(struct inode *inode, struct file *file)
+{
+ unsigned int minor = iminor(inode);
+ struct saa7146_dev *h = NULL, *dev = NULL;
+ struct list_head *list;
+ struct saa7146_fh *fh = NULL;
+ int result = 0;
+
+ enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ DEB_EE(("inode:%p, file:%p, minor:%d\n",inode,file,minor));
+
+ if (down_interruptible(&saa7146_devices_lock))
+ return -ERESTARTSYS;
+
+ list_for_each(list,&saa7146_devices) {
+ h = list_entry(list, struct saa7146_dev, item);
+ if( NULL == h->vv_data ) {
+ DEB_D(("device %p has not registered video devices.\n",h));
+ continue;
+ }
+ DEB_D(("trying: %p @ major %d,%d\n",h,h->vv_data->video_minor,h->vv_data->vbi_minor));
+
+ if (h->vv_data->video_minor == minor) {
+ dev = h;
+ }
+ if (h->vv_data->vbi_minor == minor) {
+ type = V4L2_BUF_TYPE_VBI_CAPTURE;
+ dev = h;
+ }
+ }
+ if (NULL == dev) {
+ DEB_S(("no such video device.\n"));
+ result = -ENODEV;
+ goto out;
+ }
+
+ DEB_D(("using: %p\n",dev));
+
+ /* check if an extension is registered */
+ if( NULL == dev->ext ) {
+ DEB_S(("no extension registered for this device.\n"));
+ result = -ENODEV;
+ goto out;
+ }
+
+ /* allocate per open data */
+ fh = kmalloc(sizeof(*fh),GFP_KERNEL);
+ if (NULL == fh) {
+ DEB_S(("cannot allocate memory for per open data.\n"));
+ result = -ENOMEM;
+ goto out;
+ }
+ memset(fh,0,sizeof(*fh));
+
+ file->private_data = fh;
+ fh->dev = dev;
+ fh->type = type;
+
+ if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ DEB_S(("initializing vbi...\n"));
+ result = saa7146_vbi_uops.open(dev,file);
+ } else {
+ DEB_S(("initializing video...\n"));
+ result = saa7146_video_uops.open(dev,file);
+ }
+
+ if (0 != result) {
+ goto out;
+ }
+
+ if( 0 == try_module_get(dev->ext->module)) {
+ result = -EINVAL;
+ goto out;
+ }
+
+ result = 0;
+out:
+ if( fh != 0 && result != 0 ) {
+ kfree(fh);
+ file->private_data = NULL;
+ }
+ up(&saa7146_devices_lock);
+ return result;
+}
+
+static int fops_release(struct inode *inode, struct file *file)
+{
+ struct saa7146_fh *fh = file->private_data;
+ struct saa7146_dev *dev = fh->dev;
+
+ DEB_EE(("inode:%p, file:%p\n",inode,file));
+
+ if (down_interruptible(&saa7146_devices_lock))
+ return -ERESTARTSYS;
+
+ if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ saa7146_vbi_uops.release(dev,file);
+ } else {
+ saa7146_video_uops.release(dev,file);
+ }
+
+ module_put(dev->ext->module);
+ file->private_data = NULL;
+ kfree(fh);
+
+ up(&saa7146_devices_lock);
+
+ return 0;
+}
+
+int saa7146_video_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg);
+static int fops_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+/*
+ DEB_EE(("inode:%p, file:%p, cmd:%d, arg:%li\n",inode, file, cmd, arg));
+*/
+ return video_usercopy(inode, file, cmd, arg, saa7146_video_do_ioctl);
+}
+
+static int fops_mmap(struct file *file, struct vm_area_struct * vma)
+{
+ struct saa7146_fh *fh = file->private_data;
+ struct videobuf_queue *q;
+
+ switch (fh->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+ DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",file, vma));
+ q = &fh->video_q;
+ break;
+ }
+ case V4L2_BUF_TYPE_VBI_CAPTURE: {
+ DEB_EE(("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",file, vma));
+ q = &fh->vbi_q;
+ break;
+ }
+ default:
+ BUG();
+ return 0;
+ }
+ return videobuf_mmap_mapper(q,vma);
+}
+
+static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct saa7146_fh *fh = file->private_data;
+ struct videobuf_buffer *buf = NULL;
+ struct videobuf_queue *q;
+
+ DEB_EE(("file:%p, poll:%p\n",file, wait));
+
+ if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
+ if( 0 == fh->vbi_q.streaming )
+ return videobuf_poll_stream(file, &fh->vbi_q, wait);
+ q = &fh->vbi_q;
+ } else {
+ DEB_D(("using video queue.\n"));
+ q = &fh->video_q;
+ }
+
+ if (!list_empty(&q->stream))
+ buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
+
+ if (!buf) {
+ DEB_D(("buf == NULL!\n"));
+ return POLLERR;
+ }
+
+ poll_wait(file, &buf->done, wait);
+ if (buf->state == STATE_DONE || buf->state == STATE_ERROR) {
+ DEB_D(("poll succeeded!\n"));
+ return POLLIN|POLLRDNORM;
+ }
+
+ DEB_D(("nothing to poll for, buf->state:%d\n",buf->state));
+ return 0;
+}
+
+static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
+{
+ struct saa7146_fh *fh = file->private_data;
+
+ switch (fh->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
+// DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun", file, data, (unsigned long)count));
+ return saa7146_video_uops.read(file,data,count,ppos);
+ }
+ case V4L2_BUF_TYPE_VBI_CAPTURE: {
+// DEB_EE(("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n", file, data, (unsigned long)count));
+ return saa7146_vbi_uops.read(file,data,count,ppos);
+ }
+ break;
+ default:
+ BUG();
+ return 0;
+ }
+}
+
+static struct file_operations video_fops =
+{
+ .owner = THIS_MODULE,
+ .open = fops_open,
+ .release = fops_release,
+ .read = fops_read,
+ .poll = fops_poll,
+ .mmap = fops_mmap,
+ .ioctl = fops_ioctl,
+ .llseek = no_llseek,
+};
+
+void vv_callback(struct saa7146_dev *dev, unsigned long status)
+{
+ u32 isr = status;
+
+ DEB_INT(("dev:%p, isr:0x%08x\n",dev,(u32)status));
+
+ if (0 != (isr & (MASK_27))) {
+ DEB_INT(("irq: RPS0 (0x%08x).\n",isr));
+ saa7146_video_uops.irq_done(dev,isr);
+ }
+
+ if (0 != (isr & (MASK_28))) {
+ u32 mc2 = saa7146_read(dev, MC2);
+ if( 0 != (mc2 & MASK_15)) {
+ DEB_INT(("irq: RPS1 vbi workaround (0x%08x).\n",isr));
+ wake_up(&dev->vv_data->vbi_wq);
+ saa7146_write(dev,MC2, MASK_31);
+ return;
+ }
+ DEB_INT(("irq: RPS1 (0x%08x).\n",isr));
+ saa7146_vbi_uops.irq_done(dev,isr);
+ }
+}
+
+static struct video_device device_template =
+{
+ .hardware = VID_HARDWARE_SAA7146,
+ .fops = &video_fops,
+ .minor = -1,
+};
+
+int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
+{
+ struct saa7146_vv *vv = kmalloc (sizeof(struct saa7146_vv),GFP_KERNEL);
+ if( NULL == vv ) {
+ ERR(("out of memory. aborting.\n"));
+ return -1;
+ }
+ memset(vv, 0x0, sizeof(*vv));
+
+ DEB_EE(("dev:%p\n",dev));
+
+ /* set default values for video parts of the saa7146 */
+ saa7146_write(dev, BCS_CTRL, 0x80400040);
+
+ /* enable video-port pins */
+ saa7146_write(dev, MC1, (MASK_10 | MASK_26));
+
+ /* save per-device extension data (one extension can
+ handle different devices that might need different
+ configuration data) */
+ dev->ext_vv_data = ext_vv;
+
+ vv->video_minor = -1;
+ vv->vbi_minor = -1;
+
+ vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle);
+ if( NULL == vv->d_clipping.cpu_addr ) {
+ ERR(("out of memory. aborting.\n"));
+ kfree(vv);
+ return -1;
+ }
+ memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM);
+
+ saa7146_video_uops.init(dev,vv);
+ saa7146_vbi_uops.init(dev,vv);
+
+ dev->vv_data = vv;
+ dev->vv_callback = &vv_callback;
+
+ return 0;
+}
+
+int saa7146_vv_release(struct saa7146_dev* dev)
+{
+ struct saa7146_vv *vv = dev->vv_data;
+
+ DEB_EE(("dev:%p\n",dev));
+
+ pci_free_consistent(dev->pci, SAA7146_RPS_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
+ kfree(vv);
+ dev->vv_data = NULL;
+ dev->vv_callback = NULL;
+
+ return 0;
+}
+
+int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev,
+ char *name, int type)
+{
+ struct saa7146_vv *vv = dev->vv_data;
+ struct video_device *vfd;
+
+ DEB_EE(("dev:%p, name:'%s', type:%d\n",dev,name,type));
+
+ // released by vfd->release
+ vfd = video_device_alloc();
+ if (vfd == NULL)
+ return -ENOMEM;
+
+ memcpy(vfd, &device_template, sizeof(struct video_device));
+ strlcpy(vfd->name, name, sizeof(vfd->name));
+ vfd->release = video_device_release;
+ vfd->priv = dev;
+
+ // fixme: -1 should be an insmod parameter *for the extension* (like "video_nr");
+ if (video_register_device(vfd, type, -1) < 0) {
+ ERR(("cannot register v4l2 device. skipping.\n"));
+ return -1;
+ }
+
+ if( VFL_TYPE_GRABBER == type ) {
+ vv->video_minor = vfd->minor;
+ INFO(("%s: registered device video%d [v4l2]\n",
+ dev->name, vfd->minor & 0x1f));
+ } else {
+ vv->vbi_minor = vfd->minor;
+ INFO(("%s: registered device vbi%d [v4l2]\n",
+ dev->name, vfd->minor & 0x1f));
+ }
+
+ *vid = vfd;
+ return 0;
+}
+
+int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev)
+{
+ struct saa7146_vv *vv = dev->vv_data;
+
+ DEB_EE(("dev:%p\n",dev));
+
+ if( VFL_TYPE_GRABBER == (*vid)->type ) {
+ vv->video_minor = -1;
+ } else {
+ vv->vbi_minor = -1;
+ }
+
+ video_unregister_device(*vid);
+ *vid = NULL;
+
+ return 0;
+}
+
+static int __init saa7146_vv_init_module(void)
+{
+ return 0;
+}
+
+
+static void __exit saa7146_vv_cleanup_module(void)
+{
+}
+
+module_init(saa7146_vv_init_module);
+module_exit(saa7146_vv_cleanup_module);
+
+MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
+MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware");
+MODULE_LICENSE("GPL");