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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2006-06-21 17:04:13 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-06-25 02:05:23 -0300 |
| commit | 45ad9f8b44b06bf1e91b4b3c338406c2233f0482 (patch) | |
| tree | b2cccb49543bcb7289d084a803c44354fcb64115 /Documentation | |
| parent | 54aa9a21ca03cf41d911ada969e86f27ce58bab9 (diff) | |
| download | lwn-45ad9f8b44b06bf1e91b4b3c338406c2233f0482.tar.gz lwn-45ad9f8b44b06bf1e91b4b3c338406c2233f0482.zip | |
V4L/DVB (4202): allow selecting CX2341x port mode
CX2341X port was always set to 'memory', but 'streaming' is also possible
ivtv uses the memory (DMA) interface with the CX2341X, while pvrusb2 and
cx88-blackbird use the streaming interface. This setting is now selectable
by the driver.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/video4linux/cx2341x/fw-encoder-api.txt | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/video4linux/cx2341x/fw-encoder-api.txt b/Documentation/video4linux/cx2341x/fw-encoder-api.txt index f74b0ae4a769..001c68644b08 100644 --- a/Documentation/video4linux/cx2341x/fw-encoder-api.txt +++ b/Documentation/video4linux/cx2341x/fw-encoder-api.txt @@ -270,11 +270,17 @@ Param[0] Name CX2341X_ENC_SET_OUTPUT_PORT Enum 187/0xBB Description - Assign stream output port (not recommended you change setting from default) + Assign stream output port. Normally 0 when the data is copied through + the PCI bus (DMA), and 1 when the data is streamed to another chip + (pvrusb and cx88-blackbird). Param[0] 0=Memory (default) 1=Streaming 2=Serial +Param[1] + Unknown, but leaving this to 0 seems to work best. Indications are that + this might have to do with USB support, although passing anything but 0 + onl breaks things. ------------------------------------------------------------------------------- |