From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/4] mfd: add support for Allwinner SoCs ADC
Date: Thu, 21 Jul 2016 22:08:02 +0200 [thread overview]
Message-ID: <20160721200802.GL5993@lukather> (raw)
In-Reply-To: <20160721121253.GE14925@dell>
1;4205;0c
On Thu, Jul 21, 2016 at 01:12:53PM +0100, Lee Jones wrote:
> On Wed, 20 Jul 2016, Jonathan Cameron wrote:
>
> > On 19/07/16 08:31, Lee Jones wrote:
> > > On Mon, 18 Jul 2016, Jonathan Cameron wrote:
> > >
> > >> On 15/07/16 10:59, Quentin Schulz wrote:
> > >>> The Allwinner SoCs all have an ADC that can also act as a touchscreen
> > >>> controller and a thermal sensor. For now, only the ADC and the thermal
> > >>> sensor drivers are probed by the MFD, the touchscreen controller support
> > >>> will be added later.
> > >>>
> > >>> Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
> > >> Hmm. Previous patch includes the header this one creates. Ordering issue?
> > >> The depends kind of prevents build failures by ensuring that can't be built
> > >> until this one is in place, but it is certainly an ugly way to do it.
> > >>
> > >> Few little bits innline.
> > >>> ---
> > >>>
> > >>> v2:
> > >>> - add license headers,
> > >>> - reorder alphabetically includes,
> > >>> - add SUNXI_GPADC_ prefixes for defines,
> > >>>
> > >>> drivers/mfd/Kconfig | 14 +++
> > >>> drivers/mfd/Makefile | 2 +
> > >>> drivers/mfd/sunxi-gpadc-mfd.c | 197 ++++++++++++++++++++++++++++++++++++
> > >>> include/linux/mfd/sunxi-gpadc-mfd.h | 23 +++++
> > >>> 4 files changed, 236 insertions(+)
> > >>> create mode 100644 drivers/mfd/sunxi-gpadc-mfd.c
> > >>> create mode 100644 include/linux/mfd/sunxi-gpadc-mfd.h
> > >
> > > [...]
> > >
> > >>> +static struct mfd_cell sun6i_gpadc_mfd_cells[] = {
> > >>> + {
> > >>> + .name = "sun6i-a31-gpadc-iio",
> > >>> + .resources = adc_resources,
> > >>> + .num_resources = ARRAY_SIZE(adc_resources),
> > >>> + }, {
> > >>> + .name = "iio_hwmon",
> > >> I still really dislike using this to force the probe of that driver but
> > >> kind of up to the hwmon / mfd guys on this.
> > >
> > > Can you at least say *why* you don't like it?
> > It just feels odd to have an mfd child that isn't really dependent
> > on the mfd hardware itself.
> >
> > Still if you are happy, mfd is your domain and my objections were
> > as you probably noticed not that strong - or well described!)
> >
> > So I'm fine with this.
>
> I see. So it's not actually part of the same IP/chip?
The chip has a temperature sensor, and we want to expose that
temperature through IIO.
But we don't really have the choice on how we probe iio-hwmon
here. The binding was already there, and we have to keep it.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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next prev parent reply other threads:[~2016-07-21 20:08 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-15 9:59 [PATCH v2 0/4] add support for Allwinner SoCs ADC Quentin Schulz
2016-07-15 9:59 ` [PATCH v2 1/4] hwmon: iio_hwmon: defer probe when no channel is found Quentin Schulz
2016-07-16 17:00 ` [v2,1/4] " Guenter Roeck
2016-07-18 10:02 ` Maxime Ripard
2016-07-18 13:29 ` Guenter Roeck
2016-07-15 9:59 ` [PATCH v2 2/4] iio: adc: add support for Allwinner SoCs ADC Quentin Schulz
2016-07-18 12:57 ` Maxime Ripard
2016-07-19 9:04 ` Quentin Schulz
2016-07-19 12:40 ` Maxime Ripard
2016-07-18 13:18 ` Jonathan Cameron
2016-07-19 8:33 ` Quentin Schulz
2016-07-20 14:57 ` Jonathan Cameron
2016-07-21 12:15 ` Quentin Schulz
2016-07-23 6:37 ` Jonathan Cameron
2016-07-20 12:37 ` Quentin Schulz
2016-07-20 14:15 ` Crt Mori
2016-07-20 14:59 ` Jonathan Cameron
2016-07-15 9:59 ` [PATCH v2 3/4] mfd: " Quentin Schulz
2016-07-18 13:02 ` Maxime Ripard
2016-07-19 12:04 ` Quentin Schulz
2016-07-18 13:25 ` Jonathan Cameron
2016-07-19 7:31 ` Lee Jones
2016-07-20 15:01 ` Jonathan Cameron
2016-07-21 12:12 ` Lee Jones
2016-07-21 20:08 ` Maxime Ripard [this message]
2016-07-22 13:55 ` Lee Jones
2016-07-23 6:42 ` Jonathan Cameron
2016-07-25 9:55 ` Maxime Ripard
2016-07-19 8:35 ` Quentin Schulz
2016-07-15 9:59 ` [PATCH v2 4/4] hwmon: iio: add label for channels read by iio_hwmon Quentin Schulz
2016-07-15 14:03 ` Guenter Roeck
2016-07-15 14:36 ` Quentin Schulz
2016-07-16 2:53 ` Guenter Roeck
2016-07-18 12:24 ` Jonathan Cameron
2016-07-19 6:55 ` Quentin Schulz
2016-07-20 14:49 ` Jonathan Cameron
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