diff options
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-irq.c')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-irq.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/media/video/ivtv/ivtv-irq.c b/drivers/media/video/ivtv/ivtv-irq.c index fcd6e7f5f121..88c6f4ff5c6d 100644 --- a/drivers/media/video/ivtv/ivtv-irq.c +++ b/drivers/media/video/ivtv/ivtv-irq.c @@ -698,17 +698,21 @@ static void ivtv_irq_vsync(struct ivtv *itv) if (0) IVTV_DEBUG_IRQ("DEC VSYNC\n"); - if (((frame ^ itv->yuv_info.lace_sync_field) == 0 && ((itv->lastVsyncFrame & 1) ^ itv->yuv_info.lace_sync_field)) || + if (((frame ^ itv->yuv_info.sync_field[last_dma_frame]) == 0 && + ((itv->lastVsyncFrame & 1) ^ itv->yuv_info.sync_field[last_dma_frame])) || (frame != (itv->lastVsyncFrame & 1) && !itv->yuv_info.frame_interlaced)) { int next_dma_frame = last_dma_frame; - if (next_dma_frame >= 0 && next_dma_frame != atomic_read(&itv->yuv_info.next_fill_frame)) { - write_reg(yuv_offset[next_dma_frame] >> 4, 0x82c); - write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830); - write_reg(yuv_offset[next_dma_frame] >> 4, 0x834); - write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838); - next_dma_frame = (next_dma_frame + 1) & 0x3; - atomic_set(&itv->yuv_info.next_dma_frame, next_dma_frame); + if (!(itv->yuv_info.frame_interlaced && itv->yuv_info.field_delay[next_dma_frame] && itv->yuv_info.fields_lapsed < 1)) { + if (next_dma_frame >= 0 && next_dma_frame != atomic_read(&itv->yuv_info.next_fill_frame)) { + write_reg(yuv_offset[next_dma_frame] >> 4, 0x82c); + write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830); + write_reg(yuv_offset[next_dma_frame] >> 4, 0x834); + write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838); + next_dma_frame = (next_dma_frame + 1) & 0x3; + atomic_set(&itv->yuv_info.next_dma_frame, next_dma_frame); + itv->yuv_info.fields_lapsed = -1; + } } } if (frame != (itv->lastVsyncFrame & 1)) { @@ -749,6 +753,8 @@ static void ivtv_irq_vsync(struct ivtv *itv) set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); } } + + itv->yuv_info.fields_lapsed ++; } } |