linux-kernel - [PATCH 3/3] gpiolib: Force wm831x GPIOs into GPIO mode when requested

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Date:	Wed, 17 Feb 2010 18:45:26 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH 3/3] gpiolib: Force wm831x GPIOs into GPIO mode when requested

This is the chip default but it's possible the bootloader or OTP
will have been configured to a different mode (eg, to provide
feedback during startup).

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 drivers/gpio/wm831x-gpio.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/wm831x-gpio.c b/drivers/gpio/wm831x-gpio.c
index 5b8dc09..d09021f 100644
--- a/drivers/gpio/wm831x-gpio.c
+++ b/drivers/gpio/wm831x-gpio.c
@@ -44,7 +44,8 @@ static int wm831x_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
 		val |= WM831X_GPN_TRI;
 
 	return wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + offset,
-			       WM831X_GPN_DIR | WM831X_GPN_TRI, val);
+			       WM831X_GPN_DIR | WM831X_GPN_TRI |
+			       WM831X_GPN_FN_MASK, val);
 }
 
 static int wm831x_gpio_get(struct gpio_chip *chip, unsigned offset)
@@ -84,7 +85,8 @@ static int wm831x_gpio_direction_out(struct gpio_chip *chip,
 		val |= WM831X_GPN_TRI;
 
 	ret = wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + offset,
-			      WM831X_GPN_DIR | WM831X_GPN_TRI, val);
+			      WM831X_GPN_DIR | WM831X_GPN_TRI |
+			      WM831X_GPN_FN_MASK, val);
 	if (ret < 0)
 		return ret;
 
-- 
1.6.6.1

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