diff options
Diffstat (limited to 'drivers/media/pci/cx88/cx88-core.c')
| -rw-r--r-- | drivers/media/pci/cx88/cx88-core.c | 83 |
1 files changed, 20 insertions, 63 deletions
diff --git a/drivers/media/pci/cx88/cx88-core.c b/drivers/media/pci/cx88/cx88-core.c index 71630238027b..f02740860970 100644 --- a/drivers/media/pci/cx88/cx88-core.c +++ b/drivers/media/pci/cx88/cx88-core.c @@ -76,11 +76,16 @@ static DEFINE_MUTEX(devlist); static __le32* cx88_risc_field(__le32 *rp, struct scatterlist *sglist, unsigned int offset, u32 sync_line, unsigned int bpl, unsigned int padding, - unsigned int lines, unsigned int lpi) + unsigned int lines, unsigned int lpi, bool jump) { struct scatterlist *sg; unsigned int line,todo,sol; + if (jump) { + (*rp++) = cpu_to_le32(RISC_JUMP); + (*rp++) = 0; + } + /* sync instruction */ if (sync_line != NO_SYNC_LINE) *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line); @@ -147,7 +152,7 @@ int cx88_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc, can cause next bpl to start close to a page border. First DMA region may be smaller than PAGE_SIZE */ instructions = fields * (1 + ((bpl + padding) * lines) / PAGE_SIZE + lines); - instructions += 2; + instructions += 4; if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0) return rc; @@ -155,10 +160,10 @@ int cx88_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc, rp = risc->cpu; if (UNSET != top_offset) rp = cx88_risc_field(rp, sglist, top_offset, 0, - bpl, padding, lines, 0); + bpl, padding, lines, 0, true); if (UNSET != bottom_offset) rp = cx88_risc_field(rp, sglist, bottom_offset, 0x200, - bpl, padding, lines, 0); + bpl, padding, lines, 0, top_offset == UNSET); /* save pointer to jmp instruction address */ risc->jmp = rp; @@ -179,13 +184,13 @@ int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc, there is no padding and no sync. First DMA region may be smaller than PAGE_SIZE */ instructions = 1 + (bpl * lines) / PAGE_SIZE + lines; - instructions += 1; + instructions += 3; if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0) return rc; /* write risc instructions */ rp = risc->cpu; - rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines, lpi); + rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines, lpi, !lpi); /* save pointer to jmp instruction address */ risc->jmp = rp; @@ -193,37 +198,10 @@ int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc, return 0; } -int cx88_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc, - u32 reg, u32 mask, u32 value) -{ - __le32 *rp; - int rc; - - if ((rc = btcx_riscmem_alloc(pci, risc, 4*16)) < 0) - return rc; - - /* write risc instructions */ - rp = risc->cpu; - *(rp++) = cpu_to_le32(RISC_WRITECR | RISC_IRQ2 | RISC_IMM); - *(rp++) = cpu_to_le32(reg); - *(rp++) = cpu_to_le32(value); - *(rp++) = cpu_to_le32(mask); - *(rp++) = cpu_to_le32(RISC_JUMP); - *(rp++) = cpu_to_le32(risc->dma); - return 0; -} - void -cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf) +cx88_free_buffer(struct vb2_queue *q, struct cx88_buffer *buf) { - struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); - - BUG_ON(in_interrupt()); - videobuf_waiton(q, &buf->vb, 0, 0); - videobuf_dma_unmap(q->dev, dma); - videobuf_dma_free(dma); - btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc); - buf->vb.state = VIDEOBUF_NEEDS_INIT; + btcx_riscmem_free(to_pci_dev(q->drv_priv), &buf->risc); } /* ------------------------------------------------------------------ */ @@ -539,33 +517,12 @@ void cx88_wakeup(struct cx88_core *core, struct cx88_dmaqueue *q, u32 count) { struct cx88_buffer *buf; - int bc; - - for (bc = 0;; bc++) { - if (list_empty(&q->active)) - break; - buf = list_entry(q->active.next, - struct cx88_buffer, vb.queue); - /* count comes from the hw and is is 16bit wide -- - * this trick handles wrap-arounds correctly for - * up to 32767 buffers in flight... */ - if ((s16) (count - buf->count) < 0) - break; - v4l2_get_timestamp(&buf->vb.ts); - dprintk(2,"[%p/%d] wakeup reg=%d buf=%d\n",buf,buf->vb.i, - count, buf->count); - buf->vb.state = VIDEOBUF_DONE; - list_del(&buf->vb.queue); - wake_up(&buf->vb.done); - } - if (list_empty(&q->active)) { - del_timer(&q->timeout); - } else { - mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); - } - if (bc != 1) - dprintk(2, "%s: %d buffers handled (should be 1)\n", - __func__, bc); + + buf = list_entry(q->active.next, + struct cx88_buffer, list); + v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp); + list_del(&buf->list); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE); } void cx88_shutdown(struct cx88_core *core) @@ -1043,6 +1000,7 @@ struct video_device *cx88_vdev_init(struct cx88_core *core, vfd->v4l2_dev = &core->v4l2_dev; vfd->dev_parent = &pci->dev; vfd->release = video_device_release; + vfd->lock = &core->lock; snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", core->name, type, core->board.name); return vfd; @@ -1114,7 +1072,6 @@ EXPORT_SYMBOL(cx88_shutdown); EXPORT_SYMBOL(cx88_risc_buffer); EXPORT_SYMBOL(cx88_risc_databuffer); -EXPORT_SYMBOL(cx88_risc_stopper); EXPORT_SYMBOL(cx88_free_buffer); EXPORT_SYMBOL(cx88_sram_channels); |