linux-kernel - [PATCH v2] cs5535-gpio: change input/output enable to match gpiolib expectations

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Date:	Sat, 27 Feb 2010 12:56:17 -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>,
	Andres Salomon <dilinger@...labora.co.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Jani Nikula <ext-jani.1.nikula@...ia.com>
Subject: [PATCH v2] cs5535-gpio: change input/output enable to match gpiolib expectations

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..de064c9 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_clear(chip, offset, GPIO_OUTPUT_ENABLE);
 	__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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