Re: [PATCH V2 5/6] pinctrl: sprd: Increase the range of register values

[Baolin Wang]

On 10/25/2023 7:29 PM, xu lh wrote:
> On Tue, Sep 12, 2023 at 4:37 PM Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
> wrote:
>
> > On 9/8/2023 1:51 PM, Linhua Xu wrote:
> > > From: Linhua Xu <Linhua.Xu@xxxxxxxxxx>
> > >
> > > As the UNISOC pin controller version iterates, more registers are
> > required
> > > to meet new functional requirements. Thus modify them.
> > >
> > > Signed-off-by: Linhua Xu <Linhua.Xu@xxxxxxxxxx>
> > > ---
> > >    drivers/pinctrl/sprd/pinctrl-sprd.h | 30 +++++++++++++++--------------
> > >    1 file changed, 16 insertions(+), 14 deletions(-)
> > >
> > > diff --git a/drivers/pinctrl/sprd/pinctrl-sprd.h
> > b/drivers/pinctrl/sprd/pinctrl-sprd.h
> > > index a696f81ce663..5357874186fd 100644
> > > --- a/drivers/pinctrl/sprd/pinctrl-sprd.h
> > > +++ b/drivers/pinctrl/sprd/pinctrl-sprd.h
> > > @@ -7,30 +7,32 @@
> > >    #ifndef __PINCTRL_SPRD_H__
> > >    #define __PINCTRL_SPRD_H__
> > >
> > > +#include <linux/bits.h>
> > > +
> > >    struct platform_device;
> > >
> > > -#define NUM_OFFSET   (20)
> > > -#define TYPE_OFFSET  (16)
> > > -#define BIT_OFFSET   (8)
> > > -#define WIDTH_OFFSET (4)
> > > +#define NUM_OFFSET   22
> > > +#define TYPE_OFFSET  18
> > > +#define BIT_OFFSET   10
> > > +#define WIDTH_OFFSET 6
> > >
> > >    #define SPRD_PIN_INFO(num, type, offset, width, reg)        \
> > > -             (((num) & 0xFFF) << NUM_OFFSET |        \
> > > -              ((type) & 0xF) << TYPE_OFFSET |        \
> > > -              ((offset) & 0xFF) << BIT_OFFSET |      \
> > > -              ((width) & 0xF) << WIDTH_OFFSET |      \
> > > -              ((reg) & 0xF))
> > > +             (((num) & GENMASK(10, 0)) << NUM_OFFSET |       \
> > > +              ((type) & GENMASK(3, 0)) << TYPE_OFFSET |      \
> > > +              ((offset) & GENMASK(7, 0)) << BIT_OFFSET |     \
> > > +              ((width) & GENMASK(3, 0)) << WIDTH_OFFSET |    \
> > > +              ((reg) & GENMASK(5, 0)))
> >
> > Can you define some readable macro for the mask bits?
>
>
> > > okay. Do you think the following modification is okay?
> +#define PIN_ID         GENMASK(10, 0)
> +#define PIN_TYPE       GENMASK(3, 0)
> +#define FIELD_OFFSET   GENMASK(7, 0)
> +#define FIELD_WIDTH    GENMASK(3, 0)
> +#define PIN_REG                GENMASK(5, 0)

Looks better. To keep consistent, I perfer to something as below:
#define NUM_MASK xxx
#define TYPE_MASK xxx
#define BIT_MASK xxx
#define WIDTH_MASK xxx
#define REG_MASK xxx