diff options
Diffstat (limited to 'drivers/media/video/cx88/cx88-core.c')
| -rw-r--r-- | drivers/media/video/cx88/cx88-core.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/media/video/cx88/cx88-core.c b/drivers/media/video/cx88/cx88-core.c index 973d3f39b2d..f379ede3049 100644 --- a/drivers/media/video/cx88/cx88-core.c +++ b/drivers/media/video/cx88/cx88-core.c @@ -105,7 +105,7 @@ static u32* cx88_risc_field(u32 *rp, struct scatterlist *sglist, *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); offset+=bpl; } else { - /* scanline needs to be splitted */ + /* scanline needs to be split */ todo = bpl; *(rp++)=cpu_to_le32(RISC_WRITE|RISC_SOL| (sg_dma_len(sg)-offset)); @@ -792,6 +792,11 @@ int cx88_start_audio_dma(struct cx88_core *core) { /* constant 128 made buzz in analog Nicam-stereo for bigger fifo_size */ int bpl = cx88_sram_channels[SRAM_CH25].fifo_size/4; + + /* If downstream RISC is enabled, bail out; ALSA is managing DMA */ + if (cx_read(MO_AUD_DMACNTRL) & 0x10) + return 0; + /* setup fifo + format */ cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], bpl, 0); cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], bpl, 0); @@ -801,11 +806,16 @@ int cx88_start_audio_dma(struct cx88_core *core) /* start dma */ cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */ + return 0; } int cx88_stop_audio_dma(struct cx88_core *core) { + /* If downstream RISC is enabled, bail out; ALSA is managing DMA */ + if (cx_read(MO_AUD_DMACNTRL) & 0x10) + return 0; + /* stop dma */ cx_write(MO_AUD_DMACNTRL, 0x0000); @@ -1123,6 +1133,7 @@ struct cx88_core* cx88_core_get(struct pci_dev *pci) /* init hardware */ cx88_reset(core); + cx88_card_setup_pre_i2c(core); cx88_i2c_init(core,pci); cx88_call_i2c_clients (core, TUNER_SET_STANDBY, NULL); cx88_card_setup(core); |