diff options
Diffstat (limited to 'include/linux/gpio/driver.h')
| -rw-r--r-- | include/linux/gpio/driver.h | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index cc7ec129b329..1aed31c5ffba 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -6,6 +6,7 @@ #include <linux/irq.h> #include <linux/irqchip/chained_irq.h> #include <linux/irqdomain.h> +#include <linux/lockdep.h> #include <linux/pinctrl/pinctrl.h> struct device; @@ -45,7 +46,7 @@ struct seq_file; * @base: identifies the first GPIO number handled by this chip; * or, if negative during registration, requests dynamic ID allocation. * DEPRECATION: providing anything non-negative and nailing the base - * base offset of GPIO chips is deprecated. Please pass -1 as base to + * offset of GPIO chips is deprecated. Please pass -1 as base to * let gpiolib select the chip base in all possible cases. We want to * get rid of the static GPIO number space in the long run. * @ngpio: the number of GPIOs handled by this controller; the last GPIO @@ -64,6 +65,17 @@ struct seq_file; * registers. * @irq_not_threaded: flag must be set if @can_sleep is set but the * IRQs don't need to be threaded + * @irqchip: GPIO IRQ chip impl, provided by GPIO driver + * @irqdomain: Interrupt translation domain; responsible for mapping + * between GPIO hwirq number and linux irq number + * @irq_base: first linux IRQ number assigned to GPIO IRQ chip (deprecated) + * @irq_handler: the irq handler to use (often a predefined irq core function) + * for GPIO IRQs, provided by GPIO driver + * @irq_default_type: default IRQ triggering type applied during GPIO driver + * initialization, provided by GPIO driver + * @irq_parent: GPIO IRQ chip parent/bank linux irq number, + * provided by GPIO driver + * @lock_key: per GPIO IRQ chip lockdep class * * A gpio_chip can help platforms abstract various sources of GPIOs so * they can all be accessed through a common programing interface. @@ -126,6 +138,7 @@ struct gpio_chip { irq_flow_handler_t irq_handler; unsigned int irq_default_type; int irq_parent; + struct lock_class_key *lock_key; #endif #if defined(CONFIG_OF_GPIO) @@ -171,11 +184,25 @@ void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip, int parent_irq, irq_flow_handler_t parent_handler); -int gpiochip_irqchip_add(struct gpio_chip *gpiochip, - struct irq_chip *irqchip, - unsigned int first_irq, - irq_flow_handler_t handler, - unsigned int type); +int _gpiochip_irqchip_add(struct gpio_chip *gpiochip, + struct irq_chip *irqchip, + unsigned int first_irq, + irq_flow_handler_t handler, + unsigned int type, + struct lock_class_key *lock_key); + +#ifdef CONFIG_LOCKDEP +#define gpiochip_irqchip_add(...) \ +( \ + ({ \ + static struct lock_class_key _key; \ + _gpiochip_irqchip_add(__VA_ARGS__, &_key); \ + }) \ +) +#else +#define gpiochip_irqchip_add(...) \ + _gpiochip_irqchip_add(__VA_ARGS__, NULL) +#endif #endif /* CONFIG_GPIOLIB_IRQCHIP */ |