diff options
Diffstat (limited to 'drivers/media/video/cx23885/cx23885-vbi.c')
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-vbi.c | 72 |
1 files changed, 60 insertions, 12 deletions
diff --git a/drivers/media/video/cx23885/cx23885-vbi.c b/drivers/media/video/cx23885/cx23885-vbi.c index c0b6038..a1154f0 100644 --- a/drivers/media/video/cx23885/cx23885-vbi.c +++ b/drivers/media/video/cx23885/cx23885-vbi.c @@ -41,6 +41,12 @@ MODULE_PARM_DESC(vbi_debug, "enable debug messages [vbi]"); /* ------------------------------------------------------------------ */ +#define VBI_LINE_LENGTH 1440 +#define NTSC_VBI_START_LINE 10 /* line 10 - 21 */ +#define NTSC_VBI_END_LINE 21 +#define NTSC_VBI_LINES (NTSC_VBI_END_LINE - NTSC_VBI_START_LINE + 1) + + int cx23885_vbi_fmt(struct file *file, void *priv, struct v4l2_format *f) { @@ -49,43 +55,86 @@ int cx23885_vbi_fmt(struct file *file, void *priv, if (dev->tvnorm & V4L2_STD_525_60) { /* ntsc */ - f->fmt.vbi.sampling_rate = 28636363; + f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; + f->fmt.vbi.sampling_rate = 27000000; + f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; + f->fmt.vbi.offset = 0; + f->fmt.vbi.flags = 0; f->fmt.vbi.start[0] = 10; - f->fmt.vbi.start[1] = 273; - + f->fmt.vbi.count[0] = 17; + f->fmt.vbi.start[1] = 263 + 10 + 1; + f->fmt.vbi.count[1] = 17; } else if (dev->tvnorm & V4L2_STD_625_50) { /* pal */ f->fmt.vbi.sampling_rate = 35468950; f->fmt.vbi.start[0] = 7 - 1; f->fmt.vbi.start[1] = 319 - 1; } + return 0; } +/* We're given the Video Interrupt status register. + * The cx23885_video_irq() func has already validated + * the potential error bits, we just need to + * deal with vbi payload and return indication if + * we actually processed any payload. + */ +int cx23885_vbi_irq(struct cx23885_dev *dev, u32 status) +{ + u32 count; + int handled = 0; + + if (status & VID_BC_MSK_VBI_RISCI1) { + dprintk(1, "%s() VID_BC_MSK_VBI_RISCI1\n", __func__); + spin_lock(&dev->slock); + count = cx_read(VID_A_GPCNT); + cx23885_video_wakeup(dev, &dev->vbiq, count); + spin_unlock(&dev->slock); + handled++; + } + + if (status & VID_BC_MSK_VBI_RISCI2) { + dprintk(1, "%s() VID_BC_MSK_VBI_RISCI2\n", __func__); + dprintk(2, "stopper vbi\n"); + spin_lock(&dev->slock); + cx23885_restart_vbi_queue(dev, &dev->vbiq); + spin_unlock(&dev->slock); + handled++; + } + + return handled; +} + static int cx23885_start_vbi_dma(struct cx23885_dev *dev, struct cx23885_dmaqueue *q, struct cx23885_buffer *buf) { + dprintk(1, "%s()\n", __func__); + /* setup fifo + format */ cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH02], buf->vb.width, buf->risc.dma); /* reset counter */ + cx_write(VID_A_GPCNT_CTL, 3); + cx_write(VID_A_VBI_CTRL, 3); + cx_write(VBI_A_GPCNT_CTL, 3); q->count = 1; - /* enable irqs */ + /* enable irq */ cx23885_irq_add_enable(dev, 0x01); cx_set(VID_A_INT_MSK, 0x000022); /* start dma */ cx_set(DEV_CNTRL2, (1<<5)); - cx_set(VID_A_DMA_CTL, 0x00000022); + cx_set(VID_A_DMA_CTL, 0x22); /* FIFO and RISC enable */ return 0; } -static int cx23885_restart_vbi_queue(struct cx23885_dev *dev, +int cx23885_restart_vbi_queue(struct cx23885_dev *dev, struct cx23885_dmaqueue *q) { struct cx23885_buffer *buf; @@ -102,7 +151,7 @@ static int cx23885_restart_vbi_queue(struct cx23885_dev *dev, buf = list_entry(item, struct cx23885_buffer, vb.queue); buf->count = q->count++; } - mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); + mod_timer(&q->timeout, jiffies + (BUFFER_TIMEOUT / 30)); return 0; } @@ -113,8 +162,7 @@ void cx23885_vbi_timeout(unsigned long data) struct cx23885_buffer *buf; unsigned long flags; - cx23885_sram_channel_dump(dev, &dev->sram_channels[SRAM_CH02]); - + /* Stop the VBI engine */ cx_clear(VID_A_DMA_CTL, 0x22); spin_lock_irqsave(&dev->slock, flags); @@ -132,7 +180,7 @@ void cx23885_vbi_timeout(unsigned long data) } /* ------------------------------------------------------------------ */ -#define VBI_LINE_LENGTH 2048 +#define VBI_LINE_LENGTH 1440 #define VBI_LINE_COUNT 17 static int @@ -173,7 +221,7 @@ vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, rc = videobuf_iolock(q, &buf->vb, NULL); if (0 != rc) goto fail; - cx23885_risc_buffer(dev->pci, &buf->risc, + cx23885_risc_vbibuffer(dev->pci, &buf->risc, dma->sglist, 0, buf->vb.width * buf->vb.height, buf->vb.width, 0, @@ -207,7 +255,7 @@ vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) cx23885_start_vbi_dma(dev, q, buf); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; - mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); + mod_timer(&q->timeout, jiffies + (BUFFER_TIMEOUT / 30)); dprintk(2, "[%p/%d] vbi_queue - first active\n", buf, buf->vb.i); |