Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

V4L/DVB (4202): allow selecting CX2341x port mode

Browse source 
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>
This commit is contained in:
Hans Verkuil 2006-06-21 17:04:13 -03:00 committed by Mauro Carvalho Chehab
parent 54aa9a21ca
commit 45ad9f8b44
4 changed files with 17 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
Documentation/video4linux/cx2341x/fw-encoder-api.txt
View file

@ -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.
-------------------------------------------------------------------------------

3
drivers/media/video/cx2341x.c
View file

@ -639,6 +639,7 @@ void cx2341x_fill_defaults(struct cx2341x_mpeg_params *p)
{
static struct cx2341x_mpeg_params default_params = {
/* misc */
.port = CX2341X_PORT_MEMORY,
.width = 720,
.height = 480,
.is_50hz = 0,
@ -714,7 +715,7 @@ int cx2341x_update(void *priv, cx2341x_mbox_func func,
int err = 0;
cx2341x_api(priv, func, CX2341X_ENC_SET_OUTPUT_PORT, 1, 0); /* 0 = Memory */
cx2341x_api(priv, func, CX2341X_ENC_SET_OUTPUT_PORT, 2, new->port, 0);
if (old == NULL || old->is_50hz != new->is_50hz) {
err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_RATE, 1, new->is_50hz);

1
drivers/media/video/cx88/cx88-blackbird.c
View file

@ -1043,6 +1043,7 @@ static int __devinit blackbird_probe(struct pci_dev *pci_dev,
dev->width = 720;
dev->height = 576;
cx2341x_fill_defaults(&dev->params);
dev->params.port = CX2341X_PORT_STREAMING;
switch (core->board) {
case CX88_BOARD_HAUPPAUGE_ROSLYN:

7
include/media/cx2341x.h
View file

@ -19,8 +19,15 @@
#ifndef CX2341X_H
#define CX2341X_H
enum cx2341x_port {
CX2341X_PORT_MEMORY,
CX2341X_PORT_STREAMING,
CX2341X_PORT_SERIAL
};
struct cx2341x_mpeg_params {
/* misc */
enum cx2341x_port port;
u16 width;
u16 height;
u16 is_50hz;