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gpio: Expose the gpiochip_irq_re[ql]res helpers

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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: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220419141846.598305-3-maz@kernel.org
This commit is contained in:
Marc Zyngier 2022-04-19 15:18:38 +01:00
parent 6c846d026d
commit 704f08753b
2 changed files with 8 additions and 2 deletions
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6
drivers/gpio/gpiolib.c
View file

@ -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)
{

4
include/linux/gpio/driver.h
View file

@ -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);