[mythtv-users] Tuning problems with HD5000
mythuser at mydean.com
Sun Sep 23 04:57:45 UTC 2007
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of MythTV User
> Sent: Friday, September 21, 2007 3:46 PM
> To: 'Discussion about mythtv'
> Subject: Re: [mythtv-users] Tuning problems with HD5000
> > -----Original Message-----
> > From: mythtv-users-bounces at mythtv.org
> > [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of MythTV User
> > Sent: Tuesday, September 18, 2007 2:43 PM
> > To: 'Discussion about mythtv'
> > Subject: Re: [mythtv-users] Tuning problems with HD5000
> > >>-----Original Message-----
> > >>From: mythtv-users-bounces at mythtv.org
> > [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Boleslaw
> > Ciesielski
> > >>Sent: Tuesday, September 18, 2007 1:27 PM
> > >>To: Discussion about mythtv
> > >>Subject: Re: [mythtv-users] Tuning problems with HD5000
> MythTV User
> > >>wrote:
> > >>> 4. re-run the nvidia binary NVIDIA-Linux-x86-100.14.11-pkg1.run
> > >>You can just as well install nvidia rpms from atrpms.
> > >>Bolek
> > Thanks. Will consider this too.
> > I found this note on kernel 22.214.171.124-49
> > http://www.redhat.com/archives/fedora-package-announce/2007-Se
> > 19.html
> > - Fix Airstar hd5000 HDTV tuner
> > - V4L/DVB: fix airstar hd5000 tuner
> > Can someone please verify if this has the fix for the
> tuning problem?
> I managed to download the src RPM
> kernel-126.96.36.199-49.fc6.src.rpm and from it, I've verified
> that the patch is included:
> $ rpm -qipl kernel-188.8.131.52-49.fc6.src.rpm | grep v4l
> Now, if only the lirc kernel module be available at ATRPMs
> then I will be all set to upgrade my box. Paging, Axel,
> please help build lirc-kmdl-184.108.40.206-49.fc6-xxxxxxxxxxx.rpm
> $ cat linux-2.6-v4l-dvb-fix-airstar-hd5000-tuner.patch
> From: Trent Piepho <xyzzy at speakeasy.org>
> Date: Sun, 19 Aug 2007 08:05:54 +0000 (-0300)
> Subject: V4L/DVB (6042): b2c2-flexcop: fix Airstar HD5000
> tuning regression
> V4L/DVB (6042): b2c2-flexcop: fix Airstar HD5000 tuning regression
> Git changeset 6bdcc6e6dbab8daffd05e5026486f34ba41a6c72
> dropped the stand-alone lgh06xf module, whose functionality
> was absorbed into the dvb-pll module. However, there was a
> minor difference between the code in lgh06xf and dvb-pll,
> which caused a regression in b2c2-flexcop devices using the
> LG-H06xF NIM.
> dvb-pll will probe for the presence of an i2c pll chip by
> performing a single byte read, the lgh06xf driver did not do
> this. Unfortunately, the code in flexcop-i2c.c does not
> currently support 1 byte or 0 byte reads as a probe. Such
> probes with the current code will always fail.
> In order to work around this problem, and restore proper
> functionality of the Airstar HD5000 device, this hack was
> created to make the probe appear to succeed. The single byte
> read in dvb_pll_attach is the only place where such a probe
> would ever occur, so this change is safe, and will not affect
> any other devices.
> Of course, if one knew how to actually perform the read
> operation, it would be better to go that route. In the
> meantime, however, we must apply this workaround, in order to
> prevent the regression that causes tuning to fail on the
> Airstar HD5000 ATSC device.
> Thanks to Jarod Wilson, who had originally reported this
> regression, and to Geoffrey Hausheer, whose original
> workaround patch led us to find the actual cause of the problem.
> Signed-off-by: Trent Piepho <xyzzy at speakeasy.org>
> Cc: Geoffrey Hausheer <inli3epy93n at phracturedblue.com>
> Acked-by: Jarod Wilson <jwilson at redhat.com>
> Signed-off-by: Michael Krufky <mkrufky at linuxtv.org>
> Signed-off-by: Mauro Carvalho Chehab <mchehab at infradead.org>
> diff --git a/drivers/media/dvb/b2c2/flexcop-i2c.c
> index 02a0ea6..6bf858a 100644
> --- a/drivers/media/dvb/b2c2/flexcop-i2c.c
> +++ b/drivers/media/dvb/b2c2/flexcop-i2c.c
> @@ -135,6 +135,13 @@ static int flexcop_master_xfer(struct
> i2c_adapter *i2c_adap, struct i2c_msg msgs
> struct flexcop_device *fc = i2c_get_adapdata(i2c_adap);
> int i, ret = 0;
> + /* Some drivers use 1 byte or 0 byte reads as probes,
> which this
> + * driver doesn't support. These probes will always
> fail, so this
> + * hack makes them always succeed. If one knew how,
> it would of
> + * course be better to actually do the read. */
> + if (num == 1 && msgs.flags == I2C_M_RD && msgs.len <= 1)
> + return 1;
> if (mutex_lock_interruptible(&fc->i2c_mutex))
> return -ERESTARTSYS;
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Looks like this will do for the mean time...
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