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authorLinus Walleij <linus.walleij@linaro.org>2018-06-27 10:47:28 +0200
committerLinus Walleij <linus.walleij@linaro.org>2018-07-02 16:00:49 +0200
commitf9e03b0ef10ce5040714783a09cf12df26bcb3d7 (patch)
tree12256ec748c0b9e8d6a7af063fc32b453768f1e9
parentgpio: sch311x: Include the right header (diff)
downloadlinux-f9e03b0ef10ce5040714783a09cf12df26bcb3d7.tar.xz
linux-f9e03b0ef10ce5040714783a09cf12df26bcb3d7.zip
gpio: sch311x: Implement .get_direction()
It's pretty simple to implement the .get_direction() for this chip, so let's just do it. Cc: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-sch311x.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-sch311x.c b/drivers/gpio/gpio-sch311x.c
index 8bc2bf45e5da..ed64f7fa23b1 100644
--- a/drivers/gpio/gpio-sch311x.c
+++ b/drivers/gpio/gpio-sch311x.c
@@ -221,6 +221,18 @@ static int sch311x_gpio_direction_out(struct gpio_chip *chip, unsigned offset,
return 0;
}
+static int sch311x_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+ struct sch311x_gpio_block *block = gpiochip_get_data(chip);
+ unsigned char data;
+
+ spin_lock(&block->lock);
+ data = inb(block->runtime_reg + block->config_regs[offset]);
+ spin_unlock(&block->lock);
+
+ return !!(data & SCH311X_GPIO_CONF_IN);
+}
+
static int sch311x_gpio_probe(struct platform_device *pdev)
{
struct sch311x_pdev_data *pdata = dev_get_platdata(&pdev->dev);
@@ -253,6 +265,7 @@ static int sch311x_gpio_probe(struct platform_device *pdev)
block->chip.free = sch311x_gpio_free;
block->chip.direction_input = sch311x_gpio_direction_in;
block->chip.direction_output = sch311x_gpio_direction_out;
+ block->chip.get_direction = sch311x_gpio_get_direction;
block->chip.get = sch311x_gpio_get;
block->chip.set = sch311x_gpio_set;
block->chip.ngpio = 8;