gpio/pinctrl: sunxi: stop poking around in private vars

This kind of hacks disturbs the refactoring of the gpiolib.

The descriptor table belongs to the gpiolib, if we want to know
something about something in it, use or define the proper accessor
functions. Let's add this gpiochip_lins_is_irq() to do what the
sunxi driver is trying at so we can privatize the descriptors
properly.

Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f3fcd41..ff8d55a 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1857,6 +1857,15 @@ void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset)
 }
 EXPORT_SYMBOL_GPL(gpiochip_unlock_as_irq);
 
+bool gpiochip_line_is_irq(struct gpio_chip *chip, unsigned int offset)
+{
+       if (offset >= chip->ngpio)
+               return false;
+
+       return test_bit(FLAG_USED_AS_IRQ, &chip->gpiodev->descs[offset].flags);
+}
+EXPORT_SYMBOL_GPL(gpiochip_line_is_irq);
+
 /**
  * gpiod_get_raw_value_cansleep() - return a gpio's raw value
  * @desc: gpio whose value will be returned

diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index 7a2465f..3e95bfe 100644 (file)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -457,8 +457,8 @@ static int sunxi_pinctrl_gpio_get(struct gpio_chip *chip, unsigned offset)
        struct sunxi_pinctrl *pctl = gpiochip_get_data(chip);
        u32 reg = sunxi_data_reg(offset);
        u8 index = sunxi_data_offset(offset);
-       u32 set_mux = pctl->desc->irq_read_needs_mux &&
-                       test_bit(FLAG_USED_AS_IRQ, &chip->desc[offset].flags);
+       bool set_mux = pctl->desc->irq_read_needs_mux &&
+               gpiochip_line_is_irq(chip, offset);
        u32 val;
 
        if (set_mux)

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index bfc842c..41c6144 100644 (file)
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -208,6 +208,7 @@ extern struct gpio_chip *gpiochip_find(void *data,
 /* lock/unlock as IRQ */
 int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
 void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
+bool gpiochip_line_is_irq(struct gpio_chip *chip, unsigned int offset);
 
 /* get driver data */
 static inline void *gpiochip_get_data(struct gpio_chip *chip)