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gpio: twl6040: Implement .get_direction() 

The gpiolib cannot deduce the fact that every line is output
by itself, implement a .get_direction() callback so we can
inspect this.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2018-09-03 10:04:01 +02:00
parent 4bef8bf20b
commit ba74bd5d5b
1 changed files with 7 additions and 0 deletions
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7
drivers/gpio/gpio-twl6040.c
View File

@ -32,6 +32,12 @@ static int twl6040gpo_get(struct gpio_chip *chip, unsigned offset)
return !!(ret & BIT(offset));
}
static int twl6040gpo_get_direction(struct gpio_chip *chip, unsigned offset)
{
/* This means "out" */
return 0;
}
static int twl6040gpo_direction_out(struct gpio_chip *chip, unsigned offset,
int value)
{
@ -62,6 +68,7 @@ static struct gpio_chip twl6040gpo_chip = {
.owner = THIS_MODULE,
.get = twl6040gpo_get,
.direction_output = twl6040gpo_direction_out,
.get_direction = twl6040gpo_get_direction,
.set = twl6040gpo_set,
.can_sleep = true,
};