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path: root/drivers/media/dvb/frontends/tda8261.c
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* V4L/DVB (12481): Fix lowband tuning with tda8261Julian Scheel2009-09-121-2/+2
| | | | | | | | | | | | | | | | Attached is a patch which fixes tuning to low frequency channels with stb0899+tda8261 cards like the KNC TV-Station DVB-S2. The cause of the issue was a broken if construct, which should have been an if/else if, so that the setting for the lowest matching frequency is applied. Without this patch for example tuning to "arte" on Astra 19.2, 10744MHz SR22000 failed most times and when it failed the communication between driver and tda8261 was completely broken. This problem disappears with the attached patch. Signed-off-by: Julian Scheel <julian@jusst.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9457): Optimization, Fix a BugManu Abraham2008-12-291-8/+0
| | | | | | | | | * cut down some I/O operations by disabling "disable gate" * budget_av was left with the gate open, thereby more susceptible to RF interference due to I/O operations Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9433): Limit bandwidth with a 3dB response fallArvo Jarve2008-12-291-1/+1
| | | | | | | | | | | In this case, we will be sure that there exists a carrier and the center frequency would be simply f1 - f2. In such a circumstance, the TR loop is simplified to doing a simple check for timing, rather than searching for the same. Signed-off-by: Arvo Jarve <arvo@softshark.ee> Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9419): Bug: unnecessary large current causes large phasor errorsManu Abraham2008-12-291-1/+12
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9408): tda8261: check status to avoid lock lossManu Abraham2008-12-291-0/+3
| | | | | | | We need to check for tuner LOCK LOSS, especially in the case of simple PLL's Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9397): fix some bugs at tda8261Manu Abraham2008-12-291-13/+18
| | | | | | | | | | | Fix bug obviously, some enhancements as well * enable i2c_gate before doing any transaction * read is one single message with 2 words * reduce sleep from 100mS to 20mS Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9395): Add initial support for two KNC1 DVB-S2 boardsManu Abraham2008-12-291-7/+7
| | | | | | | | | Add initial support for: * KNC1 DVB-S2 Plus * KNC1 DVB-S2 OEM (known as Satelco DVB-S2) Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9394): cache last successful stateManu Abraham2008-12-291-2/+4
| | | | | Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9392): initial go at TDA8261 tunerManu Abraham2008-12-291-0/+217
Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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