Commit 704f0875 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

gpio: Expose the gpiochip_irq_re[ql]res helpers 



The GPIO subsystem has a couple of internal helpers to manage
resources on behalf of the irqchip. Expose them so that GPIO
drivers can use them directly.

Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220419141846.598305-3-maz@kernel.org
parent 6c846d02

drivers/gpio/gpiolib.c

+4 −2
Original line number Diff line number Diff line
@@ -1423,19 +1423,21 @@ static int gpiochip_to_irq(struct gpio_chip *gc, unsigned int offset) 
	return irq_create_mapping(domain, offset);

}



static int gpiochip_irq_reqres(struct irq_data *d)

int gpiochip_irq_reqres(struct irq_data *d)

{

	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);



	return gpiochip_reqres_irq(gc, d->hwirq);

}

EXPORT_SYMBOL(gpiochip_irq_reqres);



static void gpiochip_irq_relres(struct irq_data *d)

void gpiochip_irq_relres(struct irq_data *d)

{

	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);



	gpiochip_relres_irq(gc, d->hwirq);

}

EXPORT_SYMBOL(gpiochip_irq_relres);



static void gpiochip_irq_mask(struct irq_data *d)

{

include/linux/gpio/driver.h

+4 −0
Original line number Diff line number Diff line
@@ -579,6 +579,10 @@ void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset); 
void gpiochip_disable_irq(struct gpio_chip *gc, unsigned int offset);

void gpiochip_enable_irq(struct gpio_chip *gc, unsigned int offset);



/* irq_data versions of the above */

int gpiochip_irq_reqres(struct irq_data *data);

void gpiochip_irq_relres(struct irq_data *data);



/* Line status inquiry for drivers */

bool gpiochip_line_is_open_drain(struct gpio_chip *gc, unsigned int offset);

bool gpiochip_line_is_open_source(struct gpio_chip *gc, unsigned int offset);