Date: Thu, 17 Jun 1999 08:17:34 -0500 (CDT) From: jbryant@tfs.net To: FreeBSD-gnats-submit@freebsd.org Subject: kern/12258: Fix for FM Radio tuner ioctl on WinTV-Theatre cards Message-ID: <199906171317.IAA29074@argus.tfs.net>
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>Number: 12258
>Category: kern
>Synopsis: Tuning the FM radio on new -Theatre series cards from Hauppage requires that the entered frequency be 5.6 MHz low.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Thu Jun 17 06:20:00 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Jim Bryant
>Release: FreeBSD 4.0-CURRENT i386
>Organization:
self
>Environment:
Any PCI machine with the Hauppauge WinTV Theatre card. 4.0-current, and probably all earlier versions.
>Description:
To tune a FM radio station on these cards, one must tune 5.6MHz low. For example, to get 98.90 [The Rock], you have to tune 93.30. The -Theatre series cards are new, and are using the 'next-generation' chips, and it may be likely that all future cards will require the fix presented here.
>How-To-Repeat:
See description.
>Fix:
Apply the following kludge to /usr/src/sys/pci/brooktree848.c, then add 'options BKTR_HAUPPAUGE_THEATRE_FM' to your kernel config. rebuild your kernel, and reboot. This fix should suffice until the driver maintainer wakes up and reads his two day old email and comes up with a more elegant solution.
--- brooktree848.pre-hack.c Wed Jun 16 14:55:36 1999
+++ brooktree848.c Wed Jun 16 14:53:06 1999
@@ -3382,7 +3382,12 @@
*/
if(bktr->bt848_tuner == ALPS_TSCH5) {
+
+#ifdef BKTR_HAUPPAUGE_THEATRE_FM
+ temp=((int)*(unsigned long *)arg + 3565) * 32;
+#else
temp=((int)*(unsigned long *)arg + 4125) * 32;
+#endif
temp=temp/100 + (temp%100 >= 50 ? 1 : 0) +RADIO_OFFSET;
} else {
temp=(int)*(unsigned long *)arg/5-407 +RADIO_OFFSET;
>Release-Note:
>Audit-Trail:
>Unformatted:
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