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Re: [PATCH 2/3] gpio: Add FT232H CBUS GPIO driver

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  Re: [PATCH 2/3] gpio: Add FT232H CBUS GPIO driver Linus Walleij <linus.walleij@linaro.org> - 2017-08-01 08:50 +0200
    Re: [PATCH 2/3] gpio: Add FT232H CBUS GPIO driver Johan Hovold <johan@kernel.org> - 2017-08-01 11:30 +0200
      Re: [PATCH 2/3] gpio: Add FT232H CBUS GPIO driver Linus Walleij <linus.walleij@linaro.org> - 2017-08-07 11:30 +0200

#1700671 — Re: [PATCH 2/3] gpio: Add FT232H CBUS GPIO driver

On Thu, Jul 6, 2017 at 10:49 PM, Anatolij Gustschin <agust@denx.de> wrote:

> Add driver for CBUS pins on FT232H. The driver supports setting
> GPIO direction and getting/setting CBUS 0-3 pin value. The CBUS
> pins have to be enabled by configuring I/O mode in the FTDI EEPROM.
>
> Signed-off-by: Anatolij Gustschin <agust@denx.de>
(...)

> +       select GPIO_GENERIC

You do not seem to be using this.

> +#include <linux/gpio.h>

This include should not be needed. If it is, something is wrong.

> +#include <linux/gpio/driver.h>

Drivers should only include this.

> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/types.h>
> +#include <linux/usb.h>

Why is this needed if the device is abstracted behind an MFD interface?

> +#include <linux/mfd/ftdi/ftdi.h>

I.e. this?

Apart from these small things it looks like a solid and nice driver,
do you plan to merge this into MFD or should I merge it? Since it depends
on the Kconfig symbol I guess I can merge it orthogonally if I am sure
Lee will pick the MFD part.

Yours,
Linus Walleij

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#1700789

On Tue, Aug 01, 2017 at 08:49:02AM +0200, Linus Walleij wrote:
> On Thu, Jul 6, 2017 at 10:49 PM, Anatolij Gustschin <agust@denx.de> wrote:
> 
> > Add driver for CBUS pins on FT232H. The driver supports setting
> > GPIO direction and getting/setting CBUS 0-3 pin value. The CBUS
> > pins have to be enabled by configuring I/O mode in the FTDI EEPROM.
> >
> > Signed-off-by: Anatolij Gustschin <agust@denx.de>

> Apart from these small things it looks like a solid and nice driver,
> do you plan to merge this into MFD or should I merge it? Since it depends
> on the Kconfig symbol I guess I can merge it orthogonally if I am sure
> Lee will pick the MFD part.

There are some fundamental problems with this series which prevents it
from being merged. Please take a look at the discussion following patch
1/3.

Thanks,
Johan

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#1705294

On Tue, Aug 1, 2017 at 11:24 AM, Johan Hovold <johan@kernel.org> wrote:
> On Tue, Aug 01, 2017 at 08:49:02AM +0200, Linus Walleij wrote:
>> On Thu, Jul 6, 2017 at 10:49 PM, Anatolij Gustschin <agust@denx.de> wrote:
>>
>> > Add driver for CBUS pins on FT232H. The driver supports setting
>> > GPIO direction and getting/setting CBUS 0-3 pin value. The CBUS
>> > pins have to be enabled by configuring I/O mode in the FTDI EEPROM.
>> >
>> > Signed-off-by: Anatolij Gustschin <agust@denx.de>
>
>> Apart from these small things it looks like a solid and nice driver,
>> do you plan to merge this into MFD or should I merge it? Since it depends
>> on the Kconfig symbol I guess I can merge it orthogonally if I am sure
>> Lee will pick the MFD part.
>
> There are some fundamental problems with this series which prevents it
> from being merged. Please take a look at the discussion following patch
> 1/3.

Allright it is on hold pending the MFD discussion.

Yours,
Linus Walleij

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