diff options
| author | Thierry Reding <treding@nvidia.com> | 2017-11-07 19:15:58 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-11-08 14:17:12 +0100 |
| commit | 8302cf585288f75fd253f6b9a094d51ae371a3f3 (patch) | |
| tree | cacc2410c43290426bfe27da4d721e52282994ac /include/linux/gpio | |
| parent | 60ed54cae8dc0f2d41cafbd477bbed6deb716615 (diff) | |
gpio: Introduce struct gpio_irq_chip.first
Some GPIO chips cannot support sparse IRQ numbering and therefore need
to manually allocate their interrupt descriptors statically. For these
cases, a driver can pass the first allocated IRQ via the struct
gpio_irq_chip's "first" field and thereby cause the IRQ domain to map
all IRQs during initialization.
Suggested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/driver.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 0a3fdd4d9d8d..a77d4ada060c 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -128,6 +128,14 @@ struct gpio_irq_chip { * in IRQ domain of the chip. */ unsigned long *valid_mask; + + /** + * @first: + * + * Required for static IRQ allocation. If set, irq_domain_add_simple() + * will allocate and map all IRQs during initialization. + */ + unsigned int first; }; static inline struct gpio_irq_chip *to_gpio_irq_chip(struct irq_chip *chip) |