Re: [PATCH v5] atmel_flexcom: Support backup mode

From: Lee Jones
Date: Mon Oct 23 2017 - 12:07:47 EST


On Mon, 23 Oct 2017, Lee Jones wrote:
> On Thu, 19 Oct 2017, Romain Izard wrote:
>
> > The controller used by a flexcom module is configured at boot, and left
> > alone after this. As the configuration will be lost after backup mode,
> > restore the state of the flexcom driver on resume.
> >
> > Signed-off-by: Romain Izard <romain.izard.pro@xxxxxxxxx>
> > Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
> > Tested-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
> > ---
> > Changes in v5:
> > * extract from the patch series, and send as a standalone patch
> >
> > drivers/mfd/atmel-flexcom.c | 65 ++++++++++++++++++++++++++++++++++-----------
> > 1 file changed, 50 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/mfd/atmel-flexcom.c b/drivers/mfd/atmel-flexcom.c
> > index 064bde9cff5a..ef1235c4a179 100644
> > --- a/drivers/mfd/atmel-flexcom.c
> > +++ b/drivers/mfd/atmel-flexcom.c
> > @@ -39,34 +39,44 @@
> > #define FLEX_MR_OPMODE(opmode) (((opmode) << FLEX_MR_OPMODE_OFFSET) & \
> > FLEX_MR_OPMODE_MASK)
> >
> > +struct atmel_flexcom {
> > + void __iomem *base;
> > + u32 opmode;
> > + struct clk *clk;
> > +};
> >
> > static int atmel_flexcom_probe(struct platform_device *pdev)
> > {
> > struct device_node *np = pdev->dev.of_node;
> > - struct clk *clk;
> > struct resource *res;
> > - void __iomem *base;
> > - u32 opmode;
> > + struct atmel_flexcom *afc;
>
> Nit: I'd prefer if you call this 'ddata'.
>
> But the concept and implementation is fine, so if you're going to
> change it please do so and apply my:
>
> Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>

Also, 'back-up mode' isn't really a thing is it?

How about "Reinstall state on resume" or similar?

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â Open source software for ARM SoCs
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