[PATCH 2/6] gpio: mockup: implement get_multiple()

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bgolaszew...@baylibre.com>

We already support set_multiple(). Implement get_multiple() as well.

Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
---
 drivers/gpio/gpio-mockup.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index b4c1de6acf74..1c945c967f60 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -102,6 +102,22 @@ static int gpio_mockup_get(struct gpio_chip *gc, unsigned 
int offset)
        return val;
 }
 
+static int gpio_mockup_get_multiple(struct gpio_chip *gc,
+                                   unsigned long *mask, unsigned long *bits)
+{
+       struct gpio_mockup_chip *chip = gpiochip_get_data(gc);
+       unsigned int bit, val;
+
+       mutex_lock(&chip->lock);
+       for_each_set_bit(bit, mask, gc->ngpio) {
+               val = __gpio_mockup_get(gc, bit);
+               __assign_bit(bit, bits, val);
+       }
+       mutex_unlock(&chip->lock);
+
+       return 0;
+}
+
 static void __gpio_mockup_set(struct gpio_chip *gc,
                              unsigned int offset, int value)
 {
@@ -327,6 +343,7 @@ static int gpio_mockup_probe(struct platform_device *pdev)
        gc->parent = dev;
        gc->get = gpio_mockup_get;
        gc->set = gpio_mockup_set;
+       gc->get_multiple = gpio_mockup_get_multiple;
        gc->set_multiple = gpio_mockup_set_multiple;
        gc->direction_output = gpio_mockup_dirout;
        gc->direction_input = gpio_mockup_dirin;
-- 
2.20.1