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@xxxxxxxxxxxxxxxxxx>
> > >> 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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