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path: root/linux/drivers/media/common/saa7146_fops.c
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Diffstat (limited to 'linux/drivers/media/common/saa7146_fops.c')
-rw-r--r--linux/drivers/media/common/saa7146_fops.c595
1 files changed, 0 insertions, 595 deletions
diff --git a/linux/drivers/media/common/saa7146_fops.c b/linux/drivers/media/common/saa7146_fops.c
deleted file mode 100644
index ac035cbcf..000000000
--- a/linux/drivers/media/common/saa7146_fops.c
+++ /dev/null
@@ -1,595 +0,0 @@
-#include <media/saa7146_vv.h>
-#include "compat.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? */
- mutex_lock(&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 */
- mutex_unlock(&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));
- mutex_unlock(&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;
-
- BUG_ON((fh->resources & bits) != bits);
-
- mutex_lock(&dev->lock);
- fh->resources &= ~bits;
- vv->resources &= ~bits;
- DEB_D(("res: put 0x%02x, cur:0x%02x\n",bits,vv->resources));
- mutex_unlock(&dev->lock);
-}
-
-
-/********************************************************************************/
-/* common dma functions */
-
-void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
- struct saa7146_buf *buf)
-{
- struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
- DEB_EE(("dev:%p, buf:%p\n",dev,buf));
-
- BUG_ON(in_interrupt());
-
- videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_unmap(q, dma);
- videobuf_dma_free(dma);
- buf->vb.state = VIDEOBUF_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 = VIDEOBUF_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,VIDEOBUF_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 (mutex_lock_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 = kzalloc(sizeof(*fh),GFP_KERNEL);
- if (NULL == fh) {
- DEB_S(("cannot allocate memory for per open data.\n"));
- result = -ENOMEM;
- goto out;
- }
-
- file->private_data = fh;
- fh->dev = dev;
- fh->type = type;
-
- if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- DEB_S(("initializing vbi...\n"));
- if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
- result = saa7146_vbi_uops.open(dev,file);
- if (dev->ext_vv_data->vbi_fops.open)
- dev->ext_vv_data->vbi_fops.open(inode, 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 && result != 0) {
- kfree(fh);
- file->private_data = NULL;
- }
- mutex_unlock(&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 (mutex_lock_interruptible(&saa7146_devices_lock))
- return -ERESTARTSYS;
-
- if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
- saa7146_vbi_uops.release(dev,file);
- if (dev->ext_vv_data->vbi_fops.release)
- dev->ext_vv_data->vbi_fops.release(inode, file);
- } else {
- saa7146_video_uops.release(dev,file);
- }
-
- module_put(dev->ext->module);
- file->private_data = NULL;
- kfree(fh);
-
- mutex_unlock(&saa7146_devices_lock);
-
- return 0;
-}
-
-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 == VIDEOBUF_DONE || buf->state == VIDEOBUF_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));
- if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
- return saa7146_vbi_uops.read(file,data,count,ppos);
- else
- return -EINVAL;
- }
- break;
- default:
- BUG();
- return 0;
- }
-}
-
-static ssize_t fops_write(struct file *file, const 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:
- return -EINVAL;
- case V4L2_BUF_TYPE_VBI_CAPTURE:
- if (fh->dev->ext_vv_data->vbi_fops.write)
- return fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos);
- else
- return -EINVAL;
- default:
- BUG();
- return -EINVAL;
- }
-}
-
-static const struct file_operations video_fops =
-{
- .owner = THIS_MODULE,
- .open = fops_open,
- .release = fops_release,
- .read = fops_read,
- .write = fops_write,
- .poll = fops_poll,
- .mmap = fops_mmap,
- .ioctl = fops_ioctl,
- .llseek = no_llseek,
-};
-
-static 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 =
-{
- .fops = &video_fops,
- .minor = -1,
-};
-
-int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
-{
- struct saa7146_vv *vv = kzalloc (sizeof(struct saa7146_vv),GFP_KERNEL);
- if( NULL == vv ) {
- ERR(("out of memory. aborting.\n"));
- return -1;
- }
-
- 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);
- if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
- saa7146_vbi_uops.init(dev,vv);
-
- dev->vv_data = vv;
- dev->vv_callback = &vv_callback;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(saa7146_vv_init);
-
-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_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
- kfree(vv);
- dev->vv_data = NULL;
- dev->vv_callback = NULL;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(saa7146_vv_release);
-
-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"));
- video_device_release(vfd);
- 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;
-}
-EXPORT_SYMBOL_GPL(saa7146_register_device);
-
-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;
-}
-EXPORT_SYMBOL_GPL(saa7146_unregister_device);
-
-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");
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-21 13:15:16 +0000