http://bugzilla.kernel.org/show_bug.cgi?id=14581
Summary: Zoomed video is not correctly handled in
drivers/pcmcia/topic.h
Product: Drivers
Version: 2.5
Kernel Version: 2.6.31.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: PCMCIA
AssignedTo: linux-pcmcia@lists.infradead.org
ReportedBy: avi.cohenstu...@infor.com
Regression: No
The function topic97_zoom_video should be changed to the following:
static void topic97_zoom_video(struct pcmcia_socket *sock, int onoff)
{
struct yenta_socket *socket = container_of(sock, struct yenta_socket,
socket);
u8 reg_zv, reg;
reg_zv = config_readb(socket, TOPIC97_ZOOM_VIDEO_CONTROL);
if (onoff) {
reg_zv |= TOPIC97_ZV_CONTROL_ENABLE;
config_writeb(socket, TOPIC97_ZOOM_VIDEO_CONTROL, reg_zv);
reg = config_readb(socket, TOPIC97_AUDIO_VIDEO_SWITCH);
reg |= TOPIC97_AVS_AUDIO_CONTROL | TOPIC97_AVS_VIDEO_CONTROL;
config_writeb(socket, TOPIC97_AUDIO_VIDEO_SWITCH, reg);
}
else {
reg_zv &= ~TOPIC97_ZV_CONTROL_ENABLE;
config_writeb(socket, TOPIC97_ZOOM_VIDEO_CONTROL, reg_zv);
reg = config_readb(socket, TOPIC97_AUDIO_VIDEO_SWITCH);
reg &= ~(TOPIC97_AVS_AUDIO_CONTROL | TOPIC97_AVS_VIDEO_CONTROL);
config_writeb(socket, TOPIC97_AUDIO_VIDEO_SWITCH, reg);
}
}
It is hard to test as there are not many laptops that still have a Zoomed Video
CardBus enabled or there are only a few pcmcia cards that support Zoomed Video
The one I know is the Libretto 100CT and 110CT with a Zoomed Video port that
works with the Margi DVD-to-Go which streams the decoded DVD stream into the
video overlay plane via the PCMCIA Zoomed Video port.
You can find more information at
http://www.xs4all.nl/~avics/Setting%20up%20Margi%20DVD.html.
The information has been retrieved from the Topic manual which can be optained
from Toshiba.
Please contact me at avi dot cohenstuart at infor dot com for questions.
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