linux-kernel - Re: [PATCH] cs5535-gpio: change input/output enable to match gpiolib expectations

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Date:	Sat, 27 Feb 2010 12:40:33 -0600
From:	Ben Gardner <gardner.ben@...il.com>
To:	linux-kernel@...r.kernel.org,
	Andres Salomon <dilinger@...labora.co.uk>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	David Brownell <david-b@...bell.net>
Cc:	Ben Gardner <gardner.ben@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Jani Nikula <ext-jani.1.nikula@...ia.com>
Subject: Re: [PATCH] cs5535-gpio: change input/output enable to match gpiolib 
	expectations

Please ignore this patch.
It seems you have to 'commit' in git before 'format-patch'...

On Sat, Feb 27, 2010 at 12:36 PM, Ben Gardner <gardner.ben@...il.com> wrote:
> The intent of the gpiolib set_direction_xxx functions is as follows:
> output: enable both input and output
> input: disable output, enable input
>
> Change the cs5535 driver to do that.
>
> Signed-off-by: Ben Gardner <gardner.ben@...il.com>
> CC: Andres Salomon <dilinger@...labora.co.uk>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: David Brownell <dbrownell@...rs.sourceforge.net>
> CC: Jani Nikula <ext-jani.1.nikula@...ia.com>
> ---
>  drivers/gpio/cs5535-gpio.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/gpio/cs5535-gpio.c b/drivers/gpio/cs5535-gpio.c
> index 0fdbe94..59ab30e 100644
> --- a/drivers/gpio/cs5535-gpio.c
> +++ b/drivers/gpio/cs5535-gpio.c
> @@ -171,6 +171,7 @@ static int chip_direction_input(struct gpio_chip *c, unsigned offset)
>        unsigned long flags;
>
>        spin_lock_irqsave(&chip->lock, flags);
> +       __cs5535_gpio_set(chip, offset, GPIO_OUTPUT_DISABLE);
>        __cs5535_gpio_set(chip, offset, GPIO_INPUT_ENABLE);
>        spin_unlock_irqrestore(&chip->lock, flags);
>
> @@ -185,6 +186,7 @@ static int chip_direction_output(struct gpio_chip *c, unsigned offset, int val)
>        spin_lock_irqsave(&chip->lock, flags);
>
>        __cs5535_gpio_set(chip, offset, GPIO_OUTPUT_ENABLE);
> +       __cs5535_gpio_set(chip, offset, GPIO_INPUT_ENABLE);
>        if (val)
>                __cs5535_gpio_set(chip, offset, GPIO_OUTPUT_VAL);
>        else
> --
> 1.7.0
>
>
--
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