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power: reset: gpio-poweroff: let devm_gpiod_get set direction of gpio 

Since 39b2bbe3d7 (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>
This commit is contained in:
Uwe Kleine-König 2015-05-18 22:45:06 +02:00 committed by Sebastian Reichel
parent b01e7c3b80
commit a34c0a8bf8
1 changed files with 8 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/power/reset/gpio-poweroff.c
View File

@ -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) {
@ -57,26 +58,16 @@ static int gpio_poweroff_probe(struct platform_device *pdev)
return -EBUSY;
}
reset_gpio = devm_gpiod_get(&pdev->dev, NULL);
input = of_property_read_bool(pdev->dev.of_node, "input");
if (input)
flags = GPIOD_IN;
else
flags = GPIOD_OUT_LOW;
reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags);
if (IS_ERR(reset_gpio))
return PTR_ERR(reset_gpio);
input = of_property_read_bool(pdev->dev.of_node, "input");
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;
}
}
pm_power_off = &gpio_poweroff_do_poweroff;
return 0;
}