diff options
| author | Mauro Carvalho Chehab <mchehab@brturbo.com.br> | 2006-01-09 15:32:44 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@brturbo.com.br> | 2006-01-09 15:32:44 -0200 |
| commit | b7f355d23c34399ccfd54fd613c306ab4a788234 (patch) | |
| tree | 3e55c0b49918bb82f97650b281ad8feca7ad8007 /drivers/media/video/cx88/cx88-core.c | |
| parent | 0de71224d17f43101fa20696a8d7a78fb599557e (diff) | |
V4L/DVB (3293): Added digital support for cx88 (cx88-alsa)
- This module is co-authored by Ricardo Cerqueira <v4l@cerqueira.org>.
- Added digital audio support for cx88-based boards that have function
01 enabled. These boards can be identified by having PCI id 1471:8801
or 1471:8811.
- Increased DMA buffer from 512 to 4096 seems to fix audio distortion.
- Existing audio DMA uses conflict with cx88-alsa. Should be disabled when
cx88-alsa module is compiled.
Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Diffstat (limited to 'drivers/media/video/cx88/cx88-core.c')
| -rw-r--r-- | drivers/media/video/cx88/cx88-core.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/media/video/cx88/cx88-core.c b/drivers/media/video/cx88/cx88-core.c index fc814d198694..9975be1aca38 100644 --- a/drivers/media/video/cx88/cx88-core.c +++ b/drivers/media/video/cx88/cx88-core.c @@ -238,9 +238,9 @@ cx88_free_buffer(struct pci_dev *pci, struct cx88_buffer *buf) * channel 22 (u video) - 2.0k * channel 23 (v video) - 2.0k * channel 24 (vbi) - 4.0k - * channels 25+26 (audio) - 0.5k + * channels 25+26 (audio) - 4.0k * channel 28 (mpeg) - 4.0k - * TOTAL = 25.5k + * TOTAL = 29.0k * * Every channel has 160 bytes control data (64 bytes instruction * queue and 6 CDT entries), which is close to 2k total. @@ -306,7 +306,7 @@ struct sram_channel cx88_sram_channels[] = { .ctrl_start = 0x180680, .cdt = 0x180680 + 64, .fifo_start = 0x185400, - .fifo_size = 0x000200, + .fifo_size = 0x001000, .ptr1_reg = MO_DMA25_PTR1, .ptr2_reg = MO_DMA25_PTR2, .cnt1_reg = MO_DMA25_CNT1, @@ -318,7 +318,7 @@ struct sram_channel cx88_sram_channels[] = { .ctrl_start = 0x180720, .cdt = 0x180680 + 64, /* same as audio IN */ .fifo_start = 0x185400, /* same as audio IN */ - .fifo_size = 0x000200, /* same as audio IN */ + .fifo_size = 0x001000, /* same as audio IN */ .ptr1_reg = MO_DMA26_PTR1, .ptr2_reg = MO_DMA26_PTR2, .cnt1_reg = MO_DMA26_CNT1, @@ -329,7 +329,7 @@ struct sram_channel cx88_sram_channels[] = { .cmds_start = 0x180200, .ctrl_start = 0x1807C0, .cdt = 0x1807C0 + 64, - .fifo_start = 0x185600, + .fifo_start = 0x186400, .fifo_size = 0x001000, .ptr1_reg = MO_DMA28_PTR1, .ptr2_reg = MO_DMA28_PTR2, @@ -795,7 +795,6 @@ int cx88_start_audio_dma(struct cx88_core *core) /* start dma */ cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */ - return 0; } |