From: Eduardo Valentin <edubezval@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: pali.rohar@gmail.com, sre@debian.org, sre@ring0.de,
kernel list <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org,
aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
rui.zhang@intel.com, linux-pm@vger.kernel.org
Subject: Re: [PATCH] ti-soc-thermal: implement eocz bit to make driver useful on omap3
Date: Mon, 5 Jan 2015 17:35:59 -0400 [thread overview]
Message-ID: <20150105213557.GD31536@developer> (raw)
In-Reply-To: <20150103162241.GA26680@amd>
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On Sat, Jan 03, 2015 at 05:22:42PM +0100, Pavel Machek wrote:
> Hi!
>
> > > When periodic mode is not enabled, it is neccessary to force reads.
> > >
> > > Signed-off-by: Pavel Machek <pavel@ucw.cz>
> > >
>
> > > --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c
> > > +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
> > > @@ -43,6 +43,8 @@
> > >
> > > #include "ti-bandgap.h"
> > >
> > > +static int ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id);
> > > +
> > > /*** Helper functions to access registers and their bitfields ***/
> > >
> > > /**
> > > @@ -852,14 +831,20 @@ int ti_bandgap_read_temperature(struct ti_bandgap *bgp, int id,
> > > if (ret)
> > > return ret;
> > >
> > > + if (!TI_BANDGAP_HAS(bgp, MODE_CONFIG)) {
> > > + ret = ti_bandgap_force_single_read(bgp, id);
> >
> > not sure MODE_CONFIG is sufficient condition for single read on all OMAP
> > versions.
>
> Ok, what do you suggest? AFAICT, without MODE_CONFIG, continuous ADC
> mode is not available, so we have to force it periodically, so this
> should be correct.
I will have a better look and let you know. for now, adding a single
read should not hurt ( but I will double check)
>
> > > + if (ret)
> > > + return ret;
> > > + }
> > > +
> > > spin_lock(&bgp->lock);
> > > temp = ti_bandgap_read_temp(bgp, id);
> > > spin_unlock(&bgp->lock);
> > >
> > > - ret |= ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
> > > + ret = ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
> >
> > this one should be part of your clean up patch
>
> Ok, can you apply the cleanup patch and I'll prepare one on the top of
> it?
I mean, you should resend the cleanup patch including the above '|=' removal, as you are already doing in the cleanup patch.
>
> Pavel
> --
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2015-01-05 21:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-03 11:46 [PATCH] ti-soc-thermal: implement eocz bit to make driver useful on omap3 Pavel Machek
2015-01-03 12:26 ` Eduardo Valentin
2015-01-03 16:22 ` Pavel Machek
2015-01-05 21:35 ` Eduardo Valentin [this message]
2015-01-18 20:18 ` Pavel Machek
2015-01-21 5:21 ` Eduardo Valentin
2015-01-18 20:20 ` [PATCHv2] " Pavel Machek
2015-01-18 20:24 ` [PATCHv2] ti-soc-thermal: request temperature periodically if hw can't do that itself Pavel Machek
2015-03-24 16:30 ` Eduardo Valentin
2015-03-24 22:27 ` Pavel Machek
2015-03-24 22:20 ` [PATCHv3] " Pavel Machek
2015-03-31 8:42 ` [PATCH] ti-soc-thermal: implement omap3 support Pavel Machek
2015-03-31 15:02 ` Grazvydas Ignotas
2015-04-02 14:49 ` Pavel Machek
2015-04-02 14:49 ` [PATCHv2] " Pavel Machek
2015-04-07 18:57 ` Eduardo Valentin
2015-04-07 19:09 ` Eduardo Valentin
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