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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2015-05-18 22:45:06 +0200
committerSebastian Reichel <sre@kernel.org>2015-05-23 20:03:30 +0200
commita34c0a8bf8caae7a82de08dbcca2c7c11907c805 (patch)
treee78a15892ae53803b6aac08fc63f0530de44b8b0 /drivers/power/reset
parentb01e7c3b803e6f0498d4db0b124e3b4efb5ac728 (diff)
downloadlinux-a34c0a8bf8caae7a82de08dbcca2c7c11907c805.tar.bz2
power: reset: gpio-poweroff: let devm_gpiod_get set direction of gpio
Since 39b2bbe3d715 (gpio: add flags argument to gpiod_get*() functions) which appeared in v3.17-rc1, the gpiod_get* functions take an additional parameter that allows to specify direction and initial value for output. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power/reset')
-rw-r--r--drivers/power/reset/gpio-poweroff.c25
1 files changed, 8 insertions, 17 deletions
diff --git a/drivers/power/reset/gpio-poweroff.c b/drivers/power/reset/gpio-poweroff.c
index e5332f1db8a7..be3d81ff51cc 100644
--- a/drivers/power/reset/gpio-poweroff.c
+++ b/drivers/power/reset/gpio-poweroff.c
@@ -48,6 +48,7 @@ static void gpio_poweroff_do_poweroff(void)
static int gpio_poweroff_probe(struct platform_device *pdev)
{
bool input = false;
+ enum gpiod_flags flags;
/* If a pm_power_off function has already been added, leave it alone */
if (pm_power_off != NULL) {
@@ -57,25 +58,15 @@ static int gpio_poweroff_probe(struct platform_device *pdev)
return -EBUSY;
}
- reset_gpio = devm_gpiod_get(&pdev->dev, NULL);
- if (IS_ERR(reset_gpio))
- return PTR_ERR(reset_gpio);
-
input = of_property_read_bool(pdev->dev.of_node, "input");
+ if (input)
+ flags = GPIOD_IN;
+ else
+ flags = GPIOD_OUT_LOW;
- if (input) {
- if (gpiod_direction_input(reset_gpio)) {
- dev_err(&pdev->dev,
- "Could not set direction of reset GPIO to input\n");
- return -ENODEV;
- }
- } else {
- if (gpiod_direction_output(reset_gpio, 0)) {
- dev_err(&pdev->dev,
- "Could not set direction of reset GPIO\n");
- return -ENODEV;
- }
- }
+ reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags);
+ if (IS_ERR(reset_gpio))
+ return PTR_ERR(reset_gpio);
pm_power_off = &gpio_poweroff_do_poweroff;
return 0;