linux-kernel - Re: [PATCH RFC 1/2] spi: pxa2xx: Convert to GPIO descriptor API where possible

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Date:   Fri, 4 Aug 2017 13:24:08 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>
Cc:     Mark Brown <broonie@...nel.org>, Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH RFC 1/2] spi: pxa2xx: Convert to GPIO descriptor API
 where possible

On Fri, Aug 04, 2017 at 12:18:28PM +0200, Jan Kiszka wrote:
> On 2017-08-04 12:10, Mika Westerberg wrote:
> > On Thu, Aug 03, 2017 at 01:40:32PM +0200, Jan Kiszka wrote:
> >> From: Jan Kiszka <jan.kiszka@...mens.com>
> >>
> >> We still need to request/free GPIOs passed via the legacy path of
> >> pxa2xx_spi_chip::gpio_cs, but we can use the gpiod API otherwise.
> >>
> >> Consistently use the descriptor API instead of the legacy one.
> >>
> >> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
> > 
> > There are some PXA2xx platforms under arch/arm/* which use this driver
> > and legacy GPIOs. I wonder if this causes any problems with them?
> > 
> > That was one of the reasons I did not convert the whole driver over GPIO
> > descriptors.
> 
> It shouldn't cause problems (famous last words) because I refrained from
> changing the interfaces to them. References that come in as legacy GPIO
> are still treated like that.

OK. I hope someone with a PXA2xx machine could still test it.

Acked-by: Mika Westerberg <mika.westerberg@...ux.intel.com>