[ 044/108] gpio-lpc32xx: Fix value handling of gpio_direction_output()

From: Ben Hutchings
Date: Sun Oct 07 2012 - 19:29:25 EST


3.2-stable review patch. If anyone has any objections, please let me know.

------------------

From: Roland Stigge <stigge@xxxxxxxxx>

commit b1268d3737c6316016026245eef276eda6b0a621 upstream.

For GPIOs of gpio-lpc32xx, gpio_direction_output() ignores the value argument
(initial value of output). This patch fixes this by setting the level
accordingly.

Signed-off-by: Roland Stigge <stigge@xxxxxxxxx>
Acked-by: Alexandre Pereira da Silva <aletes.xgr@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-lpc32xx.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c
index 8a420f1..ed94b4e 100644
--- a/drivers/gpio/gpio-lpc32xx.c
+++ b/drivers/gpio/gpio-lpc32xx.c
@@ -308,6 +308,7 @@ static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin,
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

+ __set_gpio_level_p012(group, pin, value);
__set_gpio_dir_p012(group, pin, 0);

return 0;
@@ -318,6 +319,7 @@ static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin,
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

+ __set_gpio_level_p3(group, pin, value);
__set_gpio_dir_p3(group, pin, 0);

return 0;
@@ -326,6 +328,9 @@ static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin,
static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin,
int value)
{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+
+ __set_gpo_level_p3(group, pin, value);
return 0;
}



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