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gpio/gpiolib-of: Create of_mm_gpiochip_remove

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Create counterpart of of_mm_gpiochip_add(). This way the modules that
can be removable do not duplicate the cleanup code.

Suggested-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Ricardo Ribalda Delgado 2014-12-17 16:51:13 +01:00 committed by Linus Walleij
parent 1d6902d3a6
commit d621e8bae5
2 changed files with 18 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/gpio/gpiolib-of.c
View file

@ -204,6 +204,23 @@ int of_mm_gpiochip_add(struct device_node *np,
} }
EXPORT_SYMBOL(of_mm_gpiochip_add); EXPORT_SYMBOL(of_mm_gpiochip_add);
/**
* of_mm_gpiochip_remove - Remove memory mapped GPIO chip (bank)
* @mm_gc: pointer to the of_mm_gpio_chip allocated structure
*/
void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc)
{
struct gpio_chip *gc = &mm_gc->gc;
if (!mm_gc)
return;
gpiochip_remove(gc);
iounmap(mm_gc->regs);
kfree(gc->label);
}
EXPORT_SYMBOL(of_mm_gpiochip_remove);
#ifdef CONFIG_PINCTRL #ifdef CONFIG_PINCTRL
static void of_gpiochip_add_pin_range(struct gpio_chip *chip) static void of_gpiochip_add_pin_range(struct gpio_chip *chip)
{ {

1
include/linux/of_gpio.h
View file

@ -52,6 +52,7 @@ extern int of_get_named_gpio_flags(struct device_node *np,
extern int of_mm_gpiochip_add(struct device_node *np, extern int of_mm_gpiochip_add(struct device_node *np,
struct of_mm_gpio_chip *mm_gc); struct of_mm_gpio_chip *mm_gc);
extern void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc);
extern void of_gpiochip_add(struct gpio_chip *gc); extern void of_gpiochip_add(struct gpio_chip *gc);
extern void of_gpiochip_remove(struct gpio_chip *gc); extern void of_gpiochip_remove(struct gpio_chip *gc);