[PATCH v2 3/5] gpio: syscon: Add support for a custom get operation

[Paul Kocialkowski]

Some drivers might need a custom get operation to match custom
behavior implemented in the set operation.

Add plumbing for supporting that.

Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com>
---
 drivers/gpio/gpio-syscon.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c
index 31f332074d7d..05c537ed73f1 100644
--- a/drivers/gpio/gpio-syscon.c
+++ b/drivers/gpio/gpio-syscon.c
@@ -43,8 +43,9 @@ struct syscon_gpio_data {
        unsigned int    bit_count;
        unsigned int    dat_bit_offset;
        unsigned int    dir_bit_offset;
-       void            (*set)(struct gpio_chip *chip,
-                              unsigned offset, int value);
+       int             (*get)(struct gpio_chip *chip, unsigned offset);
+       void            (*set)(struct gpio_chip *chip, unsigned offset,
+                              int value);
 };
 
 struct syscon_gpio_priv {
@@ -252,7 +253,7 @@ static int syscon_gpio_probe(struct platform_device *pdev)
        priv->chip.label = dev_name(dev);
        priv->chip.base = -1;
        priv->chip.ngpio = priv->data->bit_count;
-       priv->chip.get = syscon_gpio_get;
+       priv->chip.get = priv->data->get ? : syscon_gpio_get;
        if (priv->data->flags & GPIO_SYSCON_FEAT_IN)
                priv->chip.direction_input = syscon_gpio_dir_in;
        if (priv->data->flags & GPIO_SYSCON_FEAT_OUT) {
-- 
2.23.0