diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-06-14 16:36:00 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-13 23:52:49 -0300 |
commit | ed0c8b5465d6cec5458d9a3041a5167d83f40fdb (patch) | |
tree | dd9e9af17c4172355422f1112dad3a5143509262 /drivers/media/common/saa7146_fops.c | |
parent | ccae7af2bf07dfef69cc2eb6ebc9e1ff15addfbd (diff) | |
download | linux-ed0c8b5465d6cec5458d9a3041a5167d83f40fdb.tar.gz linux-ed0c8b5465d6cec5458d9a3041a5167d83f40fdb.tar.bz2 linux-ed0c8b5465d6cec5458d9a3041a5167d83f40fdb.zip |
[media] saa7146: Move it to its own directory
In order to better organize the directory tree, move the
saa7146 common driver to its own directory.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common/saa7146_fops.c')
-rw-r--r-- | drivers/media/common/saa7146_fops.c | 664 |
1 files changed, 0 insertions, 664 deletions
diff --git a/drivers/media/common/saa7146_fops.c b/drivers/media/common/saa7146_fops.c deleted file mode 100644 index b3890bd49df6..000000000000 --- a/drivers/media/common/saa7146_fops.c +++ /dev/null @@ -1,664 +0,0 @@ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <media/saa7146_vv.h> -#include <linux/module.h> - -/****************************************************************************/ -/* 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? */ - if (vv->resources & bit) { - DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n", - vv->resources, bit); - /* no, someone else uses it */ - 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); - 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); - - fh->resources &= ~bits; - vv->resources &= ~bits; - DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources); -} - - -/********************************************************************************/ -/* 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(q, &buf->vb, 0, 0); - videobuf_dma_unmap(q->dev, 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 file *file) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_dev *dev = video_drvdata(file); - struct saa7146_fh *fh = NULL; - int result = 0; - - DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev)); - - if (mutex_lock_interruptible(vdev->lock)) - return -ERESTARTSYS; - - 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; - } - - v4l2_fh_init(&fh->fh, vdev); - - file->private_data = &fh->fh; - fh->dev = dev; - - if (vdev->vfl_type == VFL_TYPE_VBI) { - 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(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; - v4l2_fh_add(&fh->fh); -out: - if (fh && result != 0) { - kfree(fh); - file->private_data = NULL; - } - mutex_unlock(vdev->lock); - return result; -} - -static int fops_release(struct file *file) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - - DEB_EE("file:%p\n", file); - - if (mutex_lock_interruptible(vdev->lock)) - return -ERESTARTSYS; - - if (vdev->vfl_type == VFL_TYPE_VBI) { - 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(file); - } else { - saa7146_video_uops.release(dev,file); - } - - v4l2_fh_del(&fh->fh); - v4l2_fh_exit(&fh->fh); - module_put(dev->ext->module); - file->private_data = NULL; - kfree(fh); - - mutex_unlock(vdev->lock); - - return 0; -} - -static int fops_mmap(struct file *file, struct vm_area_struct * vma) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_fh *fh = file->private_data; - struct videobuf_queue *q; - int res; - - switch (vdev->vfl_type) { - case VFL_TYPE_GRABBER: { - DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n", - file, vma); - q = &fh->video_q; - break; - } - case VFL_TYPE_VBI: { - DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n", - file, vma); - if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT) - return -ENODEV; - q = &fh->vbi_q; - break; - } - default: - BUG(); - return 0; - } - - if (mutex_lock_interruptible(vdev->lock)) - return -ERESTARTSYS; - res = videobuf_mmap_mapper(q, vma); - mutex_unlock(vdev->lock); - return res; -} - -static unsigned int __fops_poll(struct file *file, struct poll_table_struct *wait) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_fh *fh = file->private_data; - struct videobuf_buffer *buf = NULL; - struct videobuf_queue *q; - unsigned int res = v4l2_ctrl_poll(file, wait); - - DEB_EE("file:%p, poll:%p\n", file, wait); - - if (vdev->vfl_type == VFL_TYPE_VBI) { - if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT) - return res | POLLOUT | POLLWRNORM; - if( 0 == fh->vbi_q.streaming ) - return res | 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 res | POLLERR; - } - - poll_wait(file, &buf->done, wait); - if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) { - DEB_D("poll succeeded!\n"); - return res | POLLIN | POLLRDNORM; - } - - DEB_D("nothing to poll for, buf->state:%d\n", buf->state); - return res; -} - -static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait) -{ - struct video_device *vdev = video_devdata(file); - unsigned int res; - - mutex_lock(vdev->lock); - res = __fops_poll(file, wait); - mutex_unlock(vdev->lock); - return res; -} - -static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_fh *fh = file->private_data; - int ret; - - switch (vdev->vfl_type) { - case VFL_TYPE_GRABBER: -/* - 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 VFL_TYPE_VBI: -/* - 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) { - if (mutex_lock_interruptible(vdev->lock)) - return -ERESTARTSYS; - ret = saa7146_vbi_uops.read(file, data, count, ppos); - mutex_unlock(vdev->lock); - return ret; - } - return -EINVAL; - default: - BUG(); - return 0; - } -} - -static ssize_t fops_write(struct file *file, const char __user *data, size_t count, loff_t *ppos) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_fh *fh = file->private_data; - int ret; - - switch (vdev->vfl_type) { - case VFL_TYPE_GRABBER: - return -EINVAL; - case VFL_TYPE_VBI: - if (fh->dev->ext_vv_data->vbi_fops.write) { - if (mutex_lock_interruptible(vdev->lock)) - return -ERESTARTSYS; - ret = fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos); - mutex_unlock(vdev->lock); - return ret; - } - return -EINVAL; - default: - BUG(); - return -EINVAL; - } -} - -static const struct v4l2_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, - .unlocked_ioctl = video_ioctl2, -}; - -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 const struct v4l2_ctrl_ops saa7146_ctrl_ops = { - .s_ctrl = saa7146_s_ctrl, -}; - -int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv) -{ - struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler; - struct v4l2_pix_format *fmt; - struct v4l2_vbi_format *vbi; - struct saa7146_vv *vv; - int err; - - err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev); - if (err) - return err; - - v4l2_ctrl_handler_init(hdl, 6); - v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, - V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); - v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, - V4L2_CID_CONTRAST, 0, 127, 1, 64); - v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, - V4L2_CID_SATURATION, 0, 127, 1, 64); - v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, - V4L2_CID_VFLIP, 0, 1, 1, 0); - v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops, - V4L2_CID_HFLIP, 0, 1, 1, 0); - if (hdl->error) { - err = hdl->error; - v4l2_ctrl_handler_free(hdl); - return err; - } - dev->v4l2_dev.ctrl_handler = hdl; - - vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL); - if (vv == NULL) { - ERR("out of memory. aborting.\n"); - v4l2_ctrl_handler_free(hdl); - return -ENOMEM; - } - ext_vv->vid_ops = saa7146_video_ioctl_ops; - ext_vv->vbi_ops = saa7146_vbi_ioctl_ops; - ext_vv->core_ops = &saa7146_video_ioctl_ops; - - 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->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); - v4l2_ctrl_handler_free(hdl); - 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); - - fmt = &vv->ov_fb.fmt; - fmt->width = vv->standard->h_max_out; - fmt->height = vv->standard->v_max_out; - fmt->pixelformat = V4L2_PIX_FMT_RGB565; - fmt->bytesperline = 2 * fmt->width; - fmt->sizeimage = fmt->bytesperline * fmt->height; - fmt->colorspace = V4L2_COLORSPACE_SRGB; - - fmt = &vv->video_fmt; - fmt->width = 384; - fmt->height = 288; - fmt->pixelformat = V4L2_PIX_FMT_BGR24; - fmt->field = V4L2_FIELD_ANY; - fmt->colorspace = V4L2_COLORSPACE_SMPTE170M; - fmt->bytesperline = 3 * fmt->width; - fmt->sizeimage = fmt->bytesperline * fmt->height; - - vbi = &vv->vbi_fmt; - vbi->sampling_rate = 27000000; - vbi->offset = 248; /* todo */ - vbi->samples_per_line = 720 * 2; - vbi->sample_format = V4L2_PIX_FMT_GREY; - - /* fixme: this only works for PAL */ - vbi->start[0] = 5; - vbi->count[0] = 16; - vbi->start[1] = 312; - vbi->count[1] = 16; - - init_timer(&vv->vbi_read_timeout); - - vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING; - vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY; - 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); - - v4l2_device_unregister(&dev->v4l2_dev); - pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle); - v4l2_ctrl_handler_free(&dev->ctrl_handler); - 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 video_device *vfd; - int err; - int i; - - 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; - - vfd->fops = &video_fops; - if (type == VFL_TYPE_GRABBER) - vfd->ioctl_ops = &dev->ext_vv_data->vid_ops; - else - vfd->ioctl_ops = &dev->ext_vv_data->vbi_ops; - vfd->release = video_device_release; - vfd->lock = &dev->v4l2_lock; - vfd->v4l2_dev = &dev->v4l2_dev; - vfd->tvnorms = 0; - set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); - for (i = 0; i < dev->ext_vv_data->num_stds; i++) - vfd->tvnorms |= dev->ext_vv_data->stds[i].id; - strlcpy(vfd->name, name, sizeof(vfd->name)); - video_set_drvdata(vfd, dev); - - err = video_register_device(vfd, type, -1); - if (err < 0) { - ERR("cannot register v4l2 device. skipping.\n"); - video_device_release(vfd); - return err; - } - - pr_info("%s: registered device %s [v4l2]\n", - dev->name, video_device_node_name(vfd)); - - *vid = vfd; - return 0; -} -EXPORT_SYMBOL_GPL(saa7146_register_device); - -int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev) -{ - DEB_EE("dev:%p\n", dev); - - 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"); |