From: Mike Looijmans <mike.looijmans@topic.nl>
To: Lars-Peter Clausen <lars@metafoo.de>, <pmeerw@pmeerw.net>
Cc: "linux-iio@vger.kernel.org" <linux-iio@vger.kernel.org>
Subject: Re: iio:adc:ad799x driver broken after commit "Write default config on probe and reset alert status on probe"
Date: Wed, 26 Nov 2014 10:47:12 +0100 [thread overview]
Message-ID: <5475A1A0.5060003@topic.nl> (raw)
In-Reply-To: <54748C48.1090608@metafoo.de>
On 11/25/2014 03:03 PM, Lars-Peter Clausen wrote:
> On 11/25/2014 09:12 AM, Mike Looijmans wrote:
>> After this commit:
>>
>> iio:adc:ad799x: Write default config on probe and reset alert status on
>> probe
>>
>> writing ALERT_EN and BUSY_ALERT to the chip config register clears
>> pending alerts, BUSY_ALERT is cleared when reading back the register
>>
>> The AD7999 on our board no longer functions, reading the in_voltage*_raw
>> sysfiles always returns "255" after this.
>>
>> I reverted the commit, and that fixed the problem for me.
>
> I suspect that there is something going wrong when reading back the config
> register, can you check the attached patch and see what the output is?
>
> Thanks,
> - Lars
>
The attached patch delivered the following output (using the current head code):
ad799x 1-0029: config: b 0
Met vriendelijke groet / kind regards,
Mike Looijmans
System Expert
TOPIC Embedded Systems
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next prev parent reply other threads:[~2014-11-26 9:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <547439F9.7070903@topic.nl>
2014-11-25 14:03 ` iio:adc:ad799x driver broken after commit "Write default config on probe and reset alert status on probe" Lars-Peter Clausen
2014-11-26 9:47 ` Mike Looijmans [this message]
2014-11-26 10:07 ` Lars-Peter Clausen
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