gpiolib: acpi: Add acpi_gpio_update_gpiod_lookup_flags() helper

This helper consolidates all settings of GPIO descriptor lookup flags and
quirks in the future if any.

No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

3 files changed, 19 insertions, 6 deletions

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 878c7a7dea8b..9c6ebaaa02fe 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -525,6 +525,15 @@ acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *inf
         return ret;
 }
 
+int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
+                                        struct acpi_gpio_info *info)
+{
+        if (info->polarity == GPIO_ACTIVE_LOW)
+                *lookupflags |= GPIO_ACTIVE_LOW;
+
+        return 0;
+}
+
 struct acpi_gpio_lookup {
         struct acpi_gpio_info info;
         int index;
@@ -745,10 +754,8 @@ struct gpio_desc *acpi_find_gpio(struct device *dev,
                 return ERR_PTR(-ENOENT);
         }
 
-        if (info.polarity == GPIO_ACTIVE_LOW)
-                *lookupflags |= GPIO_ACTIVE_LOW;
-
         acpi_gpio_update_gpiod_flags(dflags, &info);
+        acpi_gpio_update_gpiod_lookup_flags(lookupflags, &info);
         return desc;
 }
 
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index b8e4c9cd7b9e..bfbe5d7af372 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4350,9 +4350,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
                         return desc;
 
                 acpi_gpio_update_gpiod_flags(&dflags, &info);
-
-                if (info.polarity == GPIO_ACTIVE_LOW)
-                        lflags |= GPIO_ACTIVE_LOW;
+                acpi_gpio_update_gpiod_lookup_flags(&lflags, &info);
         }
 
         /* Currently only ACPI takes this path */
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 5dbfce616ae1..e1636e152a6c 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -125,6 +125,8 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
 
 int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
                                  struct acpi_gpio_info *info);
+int acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
+                                        struct acpi_gpio_info *info);
 
 struct gpio_desc *acpi_find_gpio(struct device *dev,
                                  const char *con_id,
@@ -153,6 +155,12 @@ acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags, struct acpi_gpio_info *inf
 {
         return 0;
 }
+static inline int
+acpi_gpio_update_gpiod_lookup_flags(unsigned long *lookupflags,
+                                    struct acpi_gpio_info *info)
+{
+        return 0;
+}
 
 static inline struct gpio_desc *
 acpi_find_gpio(struct device *dev, const char *con_id,