linux-kernel - Re: [RFC] IT87xx GPIO and other drivers

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Message-ID: <CACRpkdYD7b36-of+RMGKG=1t1gr+3gz_BuimqGK1egH2t_Oybw@mail.gmail.com>
Date:	Tue, 17 Apr 2012 21:31:51 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Diego Elio Pettenò <flameeyes@...meeyes.eu>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	guillaume ligneul <guillaume.ligneul@...lis.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Guenter Roeck <guenter.roeck@...csson.com>,
	Jean Delvare <khali@...ux-fr.org>,
	Wim Van Sebroeck <wim@...ana.be>,
	Denis Turischev <denis@...pulab.co.il>,
	linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org
Subject: Re: [RFC] IT87xx GPIO and other drivers

On Tue, Apr 17, 2012 at 4:51 PM, Diego Elio Pettenò
<flameeyes@...meeyes.eu> wrote:

> Does that mean that when the user enables the MFD, they get gpio,
> pinctrl and watchdog at once, or should it still have multiple Kconfig
> entries which select it?

No I just meant that the driver file in drivers/pinctrl/pinctrl-it87.c should
implement pinctrl, gpiolib (struct gpio_chip) and any GPIO
IRQs (struct irq_chip) in that one and the same file.

The MFD device will spawn cells/children as usual for HWMON and
other stuff, but the cell named "pinctrl-it87" (or however you
name it) should take care of all the pinctrl and GPIO stuff.

Yours,
Linus Walleij
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