pcmcia: correct handling for Zoomed Video registers in topic.h

Fix handling of Zoomed Video Registers in the Topic pcmcia controller
( http://bugzilla.kernel.org/show_bug.cgi?id=14581 ). The information
has been retrieved from the Topic manual which can be obtained from
Toshiba.

The Zoomed Video is used with PCMCIA Cards like the Margi DVD-to-Go.

[linux@dominikbrodowski.net: whitespace & commit message fix]

Signed-off-by: Avi Cohen Stuart <avi.cohenstuart@infor.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 5 insertions, 10 deletions

diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
index edccfa5bb400..615a45a8fe86 100644
--- a/drivers/pcmcia/topic.h
+++ b/drivers/pcmcia/topic.h
@@ -114,22 +114,17 @@ static void topic97_zoom_video(struct pcmcia_socket *sock, int onoff)
                 reg_zv |= TOPIC97_ZV_CONTROL_ENABLE;
                 config_writeb(socket, TOPIC97_ZOOM_VIDEO_CONTROL, reg_zv);
 
-                reg = config_readb(socket, TOPIC97_MISC2);
-                reg |= TOPIC97_MISC2_ZV_ENABLE;
-                config_writeb(socket, TOPIC97_MISC2, reg);
-
-                /* not sure this is needed, doc is unclear */
-#if 0
                 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);
-#endif
-        }
-        else {
+        } 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);
+        }
 }
 
 static int topic97_override(struct yenta_socket *socket)