[linux-dvb] Patch Avermedia A169

[wouter lists]

Hi all,

Please find attached 2 patches, which enable the dual tuner
functionality of the Avermedia A169.

Before I forget: all credits for these patches go to Rickard Osser.

I'm running these patches without problems for more then 4 months.
Although you have to keep 2 things in mind when running these patches.
I think that's why Rickard hasn't yet sent these patches to the
mailing-list, but I don't want his work to get lost.

First: you have to unload and load the tuner module to get both cards working:
modprobe -r tuner ; modprobe tuner

dmesg before modprobe:
saa7134[0]: i2c scan: found device @ 0x86  [tda9887]
saa7134[0]: i2c scan: found device @ 0xa0  [eeprom]
saa7134[0]: i2c scan: found device @ 0xc0  [tuner (analog)]
saa7134[0]: i2c scan: found device @ 0xc2  [???]
tuner 1-0060: All bytes are equal. It is not a TEA5767
tuner 1-0060: chip found @ 0xc0 (saa7134[0])
tuner 1-0060: type set to 66 (LG TALN series)
tuner 1-0061: chip found @ 0xc2 (saa7134[0])
saa7134[1]: i2c scan: found device @ 0xa0  [eeprom]
saa7134[1]: i2c scan: found device @ 0xc0  [tuner (analog)]
tuner 2-0060: TEA5767 detected.
tuner 2-0060: chip found @ 0xc0 (saa7134[1])
tuner 2-0060: type set to 62 (Philips TEA5767HN FM Radio)

dmesg after modprobe:
tuner 1-0043: chip found @ 0x86 (saa7134[0])
tda9887 1-0043: tda988[5/6/7] found @ 0x43 (tuner)
tuner 1-0060: All bytes are equal. It is not a TEA5767
tuner 1-0060: chip found @ 0xc0 (saa7134[0])
tuner 1-0060: type set to 66 (LG TALN series)
tuner 1-0061: chip found @ 0xc2 (saa7134[0])
tuner 2-0043: chip found @ 0x86 (saa7134[1])
tda9887 2-0043: tda988[5/6/7] found @ 0x43 (tuner)
tuner 2-0060: Returned more than 5 bytes. It is not a TEA5767
tuner 2-0060: chip found @ 0xc0 (saa7134[1])
tuner 2-0060: type set to 66 (LG TALN series)
tuner 2-0061: chip found @ 0xc2 (saa7134[1])

It has something to do with the i2c-scan; but I haven't found what.


Second: I have to run my system with the irqpoll option

I have no idea what is causing this error. If I run my system with the
irqpoll option, everything works great.

tuner 2-0061: chip found @ 0xc2 (saa7134[1])
irq 74: nobody cared (try booting with the "irqpoll" option)

Call Trace:
 <IRQ> [<ffffffff802a4bde>] __report_bad_irq+0x30/0x7d
 [<ffffffff802a4e18>] note_interrupt+0x1ed/0x22e
 [<ffffffff802a4325>] __do_IRQ+0xc7/0x105
 [<ffffffff80210381>] __do_softirq+0x5e/0xd5
 [<ffffffff80263fdf>] do_IRQ+0x65/0x73
 [<ffffffff80252de0>] mwait_idle+0x0/0x4a
 [<ffffffff80258989>] ret_from_intr+0x0/0xa
 <EOI> [<ffffffff80252e16>] mwait_idle+0x36/0x4a
 [<ffffffff80245415>] cpu_idle+0x95/0xb8
 [<ffffffff80538799>] start_kernel+0x216/0x21b
 [<ffffffff80538288>] _sinittext+0x288/0x28c

handlers:
[<ffffffff882101d0>] (saa7134_irq+0x0/0x284 [saa7134])
[<ffffffff882b39d6>] (saa7134_alsa_irq+0x0/0x2b0 [saa7134_alsa])
Disabling IRQ #74
# cat /proc/interrupts
           CPU0       CPU1
  0:      41586          0    IO-APIC-edge  timer
  8:          0          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 14:         38          0    IO-APIC-edge  ide0
 58:        143          0   IO-APIC-level  uhci_hcd:usb1, ehci_hcd:usb5
 66:        605          0   IO-APIC-level  eth0
 74:     100000          0   IO-APIC-level  saa7134[0], saa7134[0]
169:       7178          0   IO-APIC-level  uhci_hcd:usb4, HDA Intel,
radeon at pci:0000:01:00.0
177:        261          0   IO-APIC-level  ohci1394
185:          0          0   IO-APIC-level  uhci_hcd:usb3, saa7134[1],
saa7134[1]
193:       4583          0   IO-APIC-level  libata, uhci_hcd:usb2
NMI:         64         43
LOC:      41544      41522
ERR:          0
MIS:          0


Now it's up to you guys to decide whether to include these patches or
not. I hope they get included.

Thanks,

Wouter
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