AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-04-14 06:17:32 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

gpio: add irq domain activate/deactivate functions

Browse Source 
This adds the two new functions gpiochip_irq_domain_activate and
gpiochip_irq_domain_deactivate that can be used as the activate and
deactivate functions in the struct irq_domain_ops. This is for
situations where only gpiochip_{lock,unlock}_as_irq needs to be called.
SPMI and SSBI GPIO are two users that will initially use these
functions.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Suggested-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Brian Masney 2019-01-19 15:42:42 -05:00 committed by Linus Walleij
parent 12a9eeaebb
commit ef74f70e5a
2 changed files with 42 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/gpio/gpiolib.c
View File

@ -1775,6 +1775,43 @@ static const struct irq_domain_ops gpiochip_domain_ops = {
.xlate = irq_domain_xlate_twocell,
};
/**
* gpiochip_irq_domain_activate() - Lock a GPIO to be used as an IRQ
* @domain: The IRQ domain used by this IRQ chip
* @data: Outermost irq_data associated with the IRQ
* @reserve: If set, only reserve an interrupt vector instead of assigning one
*
* This function is a wrapper that calls gpiochip_lock_as_irq() and is to be
* used as the activate function for the &struct irq_domain_ops. The host_data
* for the IRQ domain must be the &struct gpio_chip.
*/
int gpiochip_irq_domain_activate(struct irq_domain *domain,
struct irq_data *data, bool reserve)
{
struct gpio_chip *chip = domain->host_data;
return gpiochip_lock_as_irq(chip, data->hwirq);
}
EXPORT_SYMBOL_GPL(gpiochip_irq_domain_activate);
/**
* gpiochip_irq_domain_deactivate() - Unlock a GPIO used as an IRQ
* @domain: The IRQ domain used by this IRQ chip
* @data: Outermost irq_data associated with the IRQ
*
* This function is a wrapper that will call gpiochip_unlock_as_irq() and is to
* be used as the deactivate function for the &struct irq_domain_ops. The
* host_data for the IRQ domain must be the &struct gpio_chip.
*/
void gpiochip_irq_domain_deactivate(struct irq_domain *domain,
struct irq_data *data)
{
struct gpio_chip *chip = domain->host_data;
return gpiochip_unlock_as_irq(chip, data->hwirq);
}
EXPORT_SYMBOL_GPL(gpiochip_irq_domain_deactivate);
static int gpiochip_to_irq(struct gpio_chip *chip, unsigned offset)
{
if (!gpiochip_irqchip_irq_valid(chip, offset))

5
include/linux/gpio/driver.h
View File

@ -472,6 +472,11 @@ int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq);
void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq);
int gpiochip_irq_domain_activate(struct irq_domain *domain,
struct irq_data *data, bool reserve);
void gpiochip_irq_domain_deactivate(struct irq_domain *domain,
struct irq_data *data);
void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
struct irq_chip *irqchip,
unsigned int parent_irq,