[PATCH 2/3] mach-ipq40xx: import GPIO header from mach-snapgradon

[Robert Marko]

On Thu, Apr 18, 2024 at 1:02 PM Caleb Connolly
<caleb.connolly at linaro.org> wrote:
>
> Hi Robert,
>
> On 18/04/2024 10:14, Robert Marko wrote:
> > Pinctrl driver was refactored and moved, but the required header that
> > it depends on was not included.
>
> Thanks for these patches!
>
> I'm a bit worried about duplicating this header file, we could probably
> move it to the main include directory instead?

Hi Caleb,
That works for me as its a straight copy from mach-snapdragon.

>
> Alternatively, do you think it would be sensible to combine
> mach-snapdragon with mach-ipq40xx ?
>
> I received some patches a while ago from some Qualcomm engineers trying
> to introduce support for newer IPQ SoCs, where they also seem to want to
> build U-Boot as 32-bit (something I guess ipq40xx may also do?).

If it's possible, I would prefer to keep mach-ipq40xx separate and
probably convert it
to mach-ipq later since I would also love to see some newer SoC-s as well.
While Snapdragon and IPQ40xx are similar currently they will diverge for sure.

I dont understand why Qualcomm still insists on building the stock
U-Boot in ARMv7 32-bit
compatibility mode for all of the Cortex-A53 based IPQ807x/60xx/50xx and so on.

Regards,
Robert

>
> I'm easy either way, just want to get a better understanding of this.
>
> Kind regards,
> >
> > Fixes: 24d2908e987a ("pinctrl: qcom: move ipq4019 driver from mach-ipq40xx")
> > Signed-off-by: Robert Marko <robert.marko at sartura.hr>
> > ---
> >  arch/arm/mach-ipq40xx/include/mach/gpio.h | 37 +++++++++++++++++++----
> >  1 file changed, 31 insertions(+), 6 deletions(-)
> >
> > diff --git a/arch/arm/mach-ipq40xx/include/mach/gpio.h b/arch/arm/mach-ipq40xx/include/mach/gpio.h
> > index a45747c0fe..53c6ae0649 100644
> > --- a/arch/arm/mach-ipq40xx/include/mach/gpio.h
> > +++ b/arch/arm/mach-ipq40xx/include/mach/gpio.h
> > @@ -1,10 +1,35 @@
> >  /* SPDX-License-Identifier: GPL-2.0+ */
> >  /*
> > - * Empty gpio.h
> > + * Qualcomm common pin control data.
> >   *
> > - * This file must stay as arch/arm/include/asm/gpio.h requires it.
> > - *
> > - * Copyright (c) 2019 Sartura Ltd.
> > - *
> > - * Author: Robert Marko <robert.marko at sartura.hr>
> > + * Copyright (C) 2023 Linaro Ltd.
> >   */
> > +#ifndef _QCOM_GPIO_H_
> > +#define _QCOM_GPIO_H_
> > +
> > +#include <asm/types.h>
> > +#include <stdbool.h>
> > +
> > +struct msm_pin_data {
> > +     int pin_count;
> > +     const unsigned int *pin_offsets;
> > +     /* Index of first special pin, these are ignored for now */
> > +     unsigned int special_pins_start;
> > +};
> > +
> > +static inline u32 qcom_pin_offset(const unsigned int *offs, unsigned int selector)
> > +{
> > +     u32 out = (selector * 0x1000);
> > +
> > +     if (offs)
> > +             return out + offs[selector];
> > +
> > +     return out;
> > +}
> > +
> > +static inline bool qcom_is_special_pin(const struct msm_pin_data *pindata, unsigned int pin)
> > +{
> > +     return pindata->special_pins_start && pin >= pindata->special_pins_start;
> > +}
> > +
> > +#endif /* _QCOM_GPIO_H_ */
>
> --
> // Caleb (they/them)



-- 
Robert Marko
Staff Embedded Linux Engineer
Sartura Ltd.
Lendavska ulica 16a
10000 Zagreb, Croatia
Email: robert.marko at sartura.hr
Web: www.sartura.hr