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?
> > How else would it get probed?
> >
> >> I don't have any better suggestions though..
> >>> + },
> >>> +};
> >
> > [...]
> >
> >>> + if (ret) {
> >>> + dev_err(&pdev->dev, "failed to add MFD devices: %d\n", ret);
> >>> + regmap_del_irq_chip(irq, sunxi_gpadc_mfd_dev->regmap_irqc);
> >>> + return ret;
> >>> + }
> >>> +
> >>> + dev_info(&pdev->dev, "successfully loaded\n");
> >> Seems like noise to me, but not my subsystem :)
> >
> > Agreed, I don't allow this either.
> >
> > [...]
> >
>
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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