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List:       linux-video
Subject:    Re: LIRC patch for SAA7134 almost working with Cinergy 400 board,
From:       David Atkinson <px-v4l () psykax ! com>
Date:       2003-06-27 4:03:46
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Hi,

Ole Andre Schistad wrote:
> I've got this working to the point where irrecord is able to recognize 
> my remote and record button presses from it, but unfortunately it seems 
> to be reading the wrong register when it does the recording. I did a 
> tail /var/log/messages while recording button presses, and this is the 
> output I got (interlaced with output from irrecord):
> 
> <CODE>
> Jun 24 16:27:09 phun saa7134[0]/irq[0,993954]: r=0x8000 s=0x00 GPIO18
> Jun 24 16:27:09 phun lirc_saa7134 (0): gpio_val is 5000a
> Jun 24 16:27:09 phun lirc_saa7134 (0): extracted code is 0
> 
> Found gap length: 433508
> Now enter the names for the buttons.
> 
> Please enter the name for the next button (press <ENTER> to finish 
> recording)
> POWER
> 
> Now hold down button "POWER".
> Jun 24 16:28:01 phun saa7134[0]/irq[0,1004455]: r=0x8000 s=0x00 GPIO18
> Jun 24 16:28:01 phun lirc_saa7134 (0): gpio_val is 5000a
> Jun 24 16:28:01 phun lirc_saa7134 (0): extracted code is 0
> Jun 24 16:28:02 phun saa7134[0]/irq[0,1004522]: r=0x8000 s=0x00 GPIO18
> Jun 24 16:28:02 phun lirc_saa7134 (0): gpio_val is 5000a
> Jun 24 16:28:02 phun lirc_saa7134 (0): extracted code is 0
> 
> Please enter the name for the next button (press <ENTER> to finish 
> recording)
> APP
> 
> Now hold down button "APP".
> Jun 24 16:33:36 phun saa7134[0]/irq[0,1071417]: r=0x8000 s=0x00 GPIO18
> Jun 24 16:33:36 phun lirc_saa7134 (0): gpio_val is 5000b
> Jun 24 16:33:36 phun lirc_saa7134 (0): extracted code is 0
> Jun 24 16:33:37 phun saa7134[0]/irq[0,1071484]: r=0x8000 s=0x00 GPIO18
> Jun 24 16:33:37 phun lirc_saa7134 (0): gpio_val is 5000b
> Jun 24 16:33:37 phun lirc_saa7134 (0): extracted code is 0
> 
> </CODE>

It is reading the raw GPIO value fine, but it is not extracting the 
remote control code properly. It looks like the gpio_mask could be 
wrong for your card (in rcv_infos[] in lirc_saa7134.c). I worked it out 
as being 0x3F.

If you get it to work, email it to me, as I wasn't able to get irqs to 
work for that card.

- David.

> 
> The resulting lircd.conf looks like this:
> 
> 
> begin remote
> 
>  name  /tmp/cinergy.lirc
>  bits            0
>  eps            30
>  aeps          100
> 
>  one             0     0
>  zero            0     0
>  pre_data_bits   42
>  pre_data       0x1A1F2F00FF
>  gap          433508
>  toggle_bit      0
> 
> 
>      begin codes
>          POWER                    0x0000000000000000
>          APP                      0x0000000000000000
>      end codes
> 
> end remote
> 
> 
> 
> Now, as you can see, the lirc driver itself  is able to distinguish 
> between the two keys I tried to program, ie one has a GPIO_VAL of 5000a 
> and the other gets 5000b, but it winds up being interpreted as the same 
> key on all counts. After loading this config into lircd, all keys are 
> recognized as POWER, ie the first in the list with an id of  
> 0x0000000000000000.
> 
> Clearly there's very little to keep this from being a working driver for 
> my card, but I am not enough of a C coder to fix it myself so I am 
> hoping that the author (David Atkinson) or someone on this list will be 
> able to help fix this.
> 
> 
> The patch I'm using can be found on at 
> http://users.tpg.com.au/atko/gpf/ir/ , called irfiles-20030610.tar.gz 
> <http://users.tpg.com.au/atko/gpf/ir/files/irfiles-20030610.tar.gz> - 
> Trial support for Cinergy 400.
> 
> This patch did not work when I downloaded the newest snapshot of the 
> saa7134 driver (ie 0.2.8) but on reverting to 0.2.7 it went quite 
> smoothly and gave the results as described.
> 
> In advance thanks,
> 
> Ole Andre
> 
> 
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