diff options
Diffstat (limited to 'drivers/staging/media/deprecated/saa7146/common/saa7146_vbi.c')
| -rw-r--r-- | drivers/staging/media/deprecated/saa7146/common/saa7146_vbi.c | 498 |
1 files changed, 0 insertions, 498 deletions
diff --git a/drivers/staging/media/deprecated/saa7146/common/saa7146_vbi.c b/drivers/staging/media/deprecated/saa7146/common/saa7146_vbi.c deleted file mode 100644 index 2d4a05d7bc5b..000000000000 --- a/drivers/staging/media/deprecated/saa7146/common/saa7146_vbi.c +++ /dev/null @@ -1,498 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include "saa7146_vv.h" - -static int vbi_pixel_to_capture = 720 * 2; - -static int vbi_workaround(struct saa7146_dev *dev) -{ - struct saa7146_vv *vv = dev->vv_data; - - u32 *cpu; - dma_addr_t dma_addr; - - int count = 0; - int i; - - DECLARE_WAITQUEUE(wait, current); - - DEB_VBI("dev:%p\n", dev); - - /* once again, a bug in the saa7146: the brs acquisition - is buggy and especially the BXO-counter does not work - as specified. there is this workaround, but please - don't let me explain it. ;-) */ - - cpu = dma_alloc_coherent(&dev->pci->dev, 4096, &dma_addr, GFP_KERNEL); - if (NULL == cpu) - return -ENOMEM; - - /* setup some basic programming, just for the workaround */ - saa7146_write(dev, BASE_EVEN3, dma_addr); - saa7146_write(dev, BASE_ODD3, dma_addr+vbi_pixel_to_capture); - saa7146_write(dev, PROT_ADDR3, dma_addr+4096); - saa7146_write(dev, PITCH3, vbi_pixel_to_capture); - saa7146_write(dev, BASE_PAGE3, 0x0); - saa7146_write(dev, NUM_LINE_BYTE3, (2<<16)|((vbi_pixel_to_capture)<<0)); - saa7146_write(dev, MC2, MASK_04|MASK_20); - - /* load brs-control register */ - WRITE_RPS1(CMD_WR_REG | (1 << 8) | (BRS_CTRL/4)); - /* BXO = 1h, BRS to outbound */ - WRITE_RPS1(0xc000008c); - /* wait for vbi_a or vbi_b*/ - if ( 0 != (SAA7146_USE_PORT_B_FOR_VBI & dev->ext_vv_data->flags)) { - DEB_D("...using port b\n"); - WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | CMD_E_FID_B); - WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | CMD_O_FID_B); -/* - WRITE_RPS1(CMD_PAUSE | MASK_09); -*/ - } else { - DEB_D("...using port a\n"); - WRITE_RPS1(CMD_PAUSE | MASK_10); - } - /* upload brs */ - WRITE_RPS1(CMD_UPLOAD | MASK_08); - /* load brs-control register */ - WRITE_RPS1(CMD_WR_REG | (1 << 8) | (BRS_CTRL/4)); - /* BYO = 1, BXO = NQBIL (=1728 for PAL, for NTSC this is 858*2) - NumByte3 (=1440) = 288 */ - WRITE_RPS1(((1728-(vbi_pixel_to_capture)) << 7) | MASK_19); - /* wait for brs_done */ - WRITE_RPS1(CMD_PAUSE | MASK_08); - /* upload brs */ - WRITE_RPS1(CMD_UPLOAD | MASK_08); - /* load video-dma3 NumLines3 and NumBytes3 */ - WRITE_RPS1(CMD_WR_REG | (1 << 8) | (NUM_LINE_BYTE3/4)); - /* dev->vbi_count*2 lines, 720 pixel (= 1440 Bytes) */ - WRITE_RPS1((2 << 16) | (vbi_pixel_to_capture)); - /* load brs-control register */ - WRITE_RPS1(CMD_WR_REG | (1 << 8) | (BRS_CTRL/4)); - /* Set BRS right: note: this is an experimental value for BXO (=> PAL!) */ - WRITE_RPS1((540 << 7) | (5 << 19)); // 5 == vbi_start - /* wait for brs_done */ - WRITE_RPS1(CMD_PAUSE | MASK_08); - /* upload brs and video-dma3*/ - WRITE_RPS1(CMD_UPLOAD | MASK_08 | MASK_04); - /* load mc2 register: enable dma3 */ - WRITE_RPS1(CMD_WR_REG | (1 << 8) | (MC1/4)); - WRITE_RPS1(MASK_20 | MASK_04); - /* generate interrupt */ - WRITE_RPS1(CMD_INTERRUPT); - /* stop rps1 */ - WRITE_RPS1(CMD_STOP); - - /* we have to do the workaround twice to be sure that - everything is ok */ - for(i = 0; i < 2; i++) { - - /* indicate to the irq handler that we do the workaround */ - saa7146_write(dev, MC2, MASK_31|MASK_15); - - saa7146_write(dev, NUM_LINE_BYTE3, (1<<16)|(2<<0)); - saa7146_write(dev, MC2, MASK_04|MASK_20); - - /* enable rps1 irqs */ - SAA7146_IER_ENABLE(dev,MASK_28); - - /* prepare to wait to be woken up by the irq-handler */ - add_wait_queue(&vv->vbi_wq, &wait); - set_current_state(TASK_INTERRUPTIBLE); - - /* start rps1 to enable workaround */ - saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle); - saa7146_write(dev, MC1, (MASK_13 | MASK_29)); - - schedule(); - - DEB_VBI("brs bug workaround %d/1\n", i); - - remove_wait_queue(&vv->vbi_wq, &wait); - __set_current_state(TASK_RUNNING); - - /* disable rps1 irqs */ - SAA7146_IER_DISABLE(dev,MASK_28); - - /* stop video-dma3 */ - saa7146_write(dev, MC1, MASK_20); - - if(signal_pending(current)) { - - DEB_VBI("aborted (rps:0x%08x)\n", - saa7146_read(dev, RPS_ADDR1)); - - /* stop rps1 for sure */ - saa7146_write(dev, MC1, MASK_29); - - dma_free_coherent(&dev->pci->dev, 4096, cpu, dma_addr); - return -EINTR; - } - } - - dma_free_coherent(&dev->pci->dev, 4096, cpu, dma_addr); - return 0; -} - -static void saa7146_set_vbi_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) -{ - struct saa7146_vv *vv = dev->vv_data; - - struct saa7146_video_dma vdma3; - - int count = 0; - unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B; - unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B; - -/* - vdma3.base_even = 0xc8000000+2560*70; - vdma3.base_odd = 0xc8000000; - vdma3.prot_addr = 0xc8000000+2560*164; - vdma3.pitch = 2560; - vdma3.base_page = 0; - vdma3.num_line_byte = (64<<16)|((vbi_pixel_to_capture)<<0); // set above! -*/ - vdma3.base_even = buf->pt[2].offset; - vdma3.base_odd = buf->pt[2].offset + 16 * vbi_pixel_to_capture; - vdma3.prot_addr = buf->pt[2].offset + 16 * 2 * vbi_pixel_to_capture; - vdma3.pitch = vbi_pixel_to_capture; - vdma3.base_page = buf->pt[2].dma | ME1; - vdma3.num_line_byte = (16 << 16) | vbi_pixel_to_capture; - - saa7146_write_out_dma(dev, 3, &vdma3); - - /* write beginning of rps-program */ - count = 0; - - /* wait for o_fid_a/b / e_fid_a/b toggle only if bit 1 is not set */ - - /* we don't wait here for the first field anymore. this is different from the video - capture and might cause that the first buffer is only half filled (with only - one field). but since this is some sort of streaming data, this is not that negative. - but by doing this, we can use the whole engine from videobuf-dma-sg.c... */ - -/* - WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | e_wait); - WRITE_RPS1(CMD_PAUSE | CMD_OAN | CMD_SIG1 | o_wait); -*/ - /* set bit 1 */ - WRITE_RPS1(CMD_WR_REG | (1 << 8) | (MC2/4)); - WRITE_RPS1(MASK_28 | MASK_12); - - /* turn on video-dma3 */ - WRITE_RPS1(CMD_WR_REG_MASK | (MC1/4)); - WRITE_RPS1(MASK_04 | MASK_20); /* => mask */ - WRITE_RPS1(MASK_04 | MASK_20); /* => values */ - - /* wait for o_fid_a/b / e_fid_a/b toggle */ - WRITE_RPS1(CMD_PAUSE | o_wait); - WRITE_RPS1(CMD_PAUSE | e_wait); - - /* generate interrupt */ - WRITE_RPS1(CMD_INTERRUPT); - - /* stop */ - WRITE_RPS1(CMD_STOP); - - /* enable rps1 irqs */ - SAA7146_IER_ENABLE(dev, MASK_28); - - /* write the address of the rps-program */ - saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle); - - /* turn on rps */ - saa7146_write(dev, MC1, (MASK_13 | MASK_29)); -} - -static int buffer_activate(struct saa7146_dev *dev, - struct saa7146_buf *buf, - struct saa7146_buf *next) -{ - struct saa7146_vv *vv = dev->vv_data; - buf->vb.state = VIDEOBUF_ACTIVE; - - DEB_VBI("dev:%p, buf:%p, next:%p\n", dev, buf, next); - saa7146_set_vbi_capture(dev,buf,next); - - mod_timer(&vv->vbi_dmaq.timeout, jiffies+BUFFER_TIMEOUT); - return 0; -} - -static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,enum v4l2_field field) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_buf *buf = (struct saa7146_buf *)vb; - - int err = 0; - int lines, llength, size; - - lines = 16 * 2 ; /* 2 fields */ - llength = vbi_pixel_to_capture; - size = lines * llength; - - DEB_VBI("vb:%p\n", vb); - - if (0 != buf->vb.baddr && buf->vb.bsize < size) { - DEB_VBI("size mismatch\n"); - return -EINVAL; - } - - if (buf->vb.size != size) - saa7146_dma_free(dev,q,buf); - - if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { - struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); - - buf->vb.width = llength; - buf->vb.height = lines; - buf->vb.size = size; - buf->vb.field = field; // FIXME: check this - - saa7146_pgtable_free(dev->pci, &buf->pt[2]); - saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); - - err = videobuf_iolock(q,&buf->vb, NULL); - if (err) - goto oops; - err = saa7146_pgtable_build_single(dev->pci, &buf->pt[2], - dma->sglist, dma->sglen); - if (0 != err) - return err; - } - buf->vb.state = VIDEOBUF_PREPARED; - buf->activate = buffer_activate; - - return 0; - - oops: - DEB_VBI("error out\n"); - saa7146_dma_free(dev,q,buf); - - return err; -} - -static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) -{ - int llength,lines; - - lines = 16 * 2 ; /* 2 fields */ - llength = vbi_pixel_to_capture; - - *size = lines * llength; - *count = 2; - - DEB_VBI("count:%d, size:%d\n", *count, *size); - - return 0; -} - -static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_buf *buf = (struct saa7146_buf *)vb; - - DEB_VBI("vb:%p\n", vb); - saa7146_buffer_queue(dev, &vv->vbi_dmaq, buf); -} - -static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_buf *buf = (struct saa7146_buf *)vb; - - DEB_VBI("vb:%p\n", vb); - saa7146_dma_free(dev,q,buf); -} - -static const struct videobuf_queue_ops vbi_qops = { - .buf_setup = buffer_setup, - .buf_prepare = buffer_prepare, - .buf_queue = buffer_queue, - .buf_release = buffer_release, -}; - -/* ------------------------------------------------------------------ */ - -static void vbi_stop(struct saa7146_fh *fh, struct file *file) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - unsigned long flags; - DEB_VBI("dev:%p, fh:%p\n", dev, fh); - - spin_lock_irqsave(&dev->slock,flags); - - /* disable rps1 */ - saa7146_write(dev, MC1, MASK_29); - - /* disable rps1 irqs */ - SAA7146_IER_DISABLE(dev, MASK_28); - - /* shut down dma 3 transfers */ - saa7146_write(dev, MC1, MASK_20); - - if (vv->vbi_dmaq.curr) - saa7146_buffer_finish(dev, &vv->vbi_dmaq, VIDEOBUF_DONE); - - videobuf_queue_cancel(&fh->vbi_q); - - vv->vbi_streaming = NULL; - - del_timer(&vv->vbi_dmaq.timeout); - del_timer(&vv->vbi_read_timeout); - - spin_unlock_irqrestore(&dev->slock, flags); -} - -static void vbi_read_timeout(struct timer_list *t) -{ - struct saa7146_vv *vv = from_timer(vv, t, vbi_read_timeout); - struct file *file = vv->vbi_read_timeout_file; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - - DEB_VBI("dev:%p, fh:%p\n", dev, fh); - - vbi_stop(fh, file); -} - -static void vbi_init(struct saa7146_dev *dev, struct saa7146_vv *vv) -{ - DEB_VBI("dev:%p\n", dev); - - INIT_LIST_HEAD(&vv->vbi_dmaq.queue); - - timer_setup(&vv->vbi_dmaq.timeout, saa7146_buffer_timeout, 0); - vv->vbi_dmaq.dev = dev; - - init_waitqueue_head(&vv->vbi_wq); -} - -static int vbi_open(struct saa7146_dev *dev, struct file *file) -{ - struct saa7146_fh *fh = file->private_data; - struct saa7146_vv *vv = fh->dev->vv_data; - - u32 arbtr_ctrl = saa7146_read(dev, PCI_BT_V1); - int ret = 0; - - DEB_VBI("dev:%p, fh:%p\n", dev, fh); - - ret = saa7146_res_get(fh, RESOURCE_DMA3_BRS); - if (0 == ret) { - DEB_S("cannot get vbi RESOURCE_DMA3_BRS resource\n"); - return -EBUSY; - } - - /* adjust arbitrition control for video dma 3 */ - arbtr_ctrl &= ~0x1f0000; - arbtr_ctrl |= 0x1d0000; - saa7146_write(dev, PCI_BT_V1, arbtr_ctrl); - saa7146_write(dev, MC2, (MASK_04|MASK_20)); - - videobuf_queue_sg_init(&fh->vbi_q, &vbi_qops, - &dev->pci->dev, &dev->slock, - V4L2_BUF_TYPE_VBI_CAPTURE, - V4L2_FIELD_SEQ_TB, // FIXME: does this really work? - sizeof(struct saa7146_buf), - file, &dev->v4l2_lock); - - vv->vbi_read_timeout.function = vbi_read_timeout; - vv->vbi_read_timeout_file = file; - - /* initialize the brs */ - if ( 0 != (SAA7146_USE_PORT_B_FOR_VBI & dev->ext_vv_data->flags)) { - saa7146_write(dev, BRS_CTRL, MASK_30|MASK_29 | (7 << 19)); - } else { - saa7146_write(dev, BRS_CTRL, 0x00000001); - - if (0 != (ret = vbi_workaround(dev))) { - DEB_VBI("vbi workaround failed!\n"); - /* return ret;*/ - } - } - - /* upload brs register */ - saa7146_write(dev, MC2, (MASK_08|MASK_24)); - return 0; -} - -static void vbi_close(struct saa7146_dev *dev, struct file *file) -{ - struct saa7146_fh *fh = file->private_data; - struct saa7146_vv *vv = dev->vv_data; - DEB_VBI("dev:%p, fh:%p\n", dev, fh); - - if( fh == vv->vbi_streaming ) { - vbi_stop(fh, file); - } - saa7146_res_free(fh, RESOURCE_DMA3_BRS); -} - -static void vbi_irq_done(struct saa7146_dev *dev, unsigned long status) -{ - struct saa7146_vv *vv = dev->vv_data; - spin_lock(&dev->slock); - - if (vv->vbi_dmaq.curr) { - DEB_VBI("dev:%p, curr:%p\n", dev, vv->vbi_dmaq.curr); - /* this must be += 2, one count for each field */ - vv->vbi_fieldcount+=2; - vv->vbi_dmaq.curr->vb.field_count = vv->vbi_fieldcount; - saa7146_buffer_finish(dev, &vv->vbi_dmaq, VIDEOBUF_DONE); - } else { - DEB_VBI("dev:%p\n", dev); - } - saa7146_buffer_next(dev, &vv->vbi_dmaq, 1); - - spin_unlock(&dev->slock); -} - -static ssize_t vbi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) -{ - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - ssize_t ret = 0; - - DEB_VBI("dev:%p, fh:%p\n", dev, fh); - - if( NULL == vv->vbi_streaming ) { - // fixme: check if dma3 is available - // fixme: activate vbi engine here if necessary. (really?) - vv->vbi_streaming = fh; - } - - if( fh != vv->vbi_streaming ) { - DEB_VBI("open %p is already using vbi capture\n", - vv->vbi_streaming); - return -EBUSY; - } - - mod_timer(&vv->vbi_read_timeout, jiffies+BUFFER_TIMEOUT); - ret = videobuf_read_stream(&fh->vbi_q, data, count, ppos, 1, - file->f_flags & O_NONBLOCK); -/* - printk("BASE_ODD3: 0x%08x\n", saa7146_read(dev, BASE_ODD3)); - printk("BASE_EVEN3: 0x%08x\n", saa7146_read(dev, BASE_EVEN3)); - printk("PROT_ADDR3: 0x%08x\n", saa7146_read(dev, PROT_ADDR3)); - printk("PITCH3: 0x%08x\n", saa7146_read(dev, PITCH3)); - printk("BASE_PAGE3: 0x%08x\n", saa7146_read(dev, BASE_PAGE3)); - printk("NUM_LINE_BYTE3: 0x%08x\n", saa7146_read(dev, NUM_LINE_BYTE3)); - printk("BRS_CTRL: 0x%08x\n", saa7146_read(dev, BRS_CTRL)); -*/ - return ret; -} - -const struct saa7146_use_ops saa7146_vbi_uops = { - .init = vbi_init, - .open = vbi_open, - .release = vbi_close, - .irq_done = vbi_irq_done, - .read = vbi_read, -}; |