diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/gpio/driver.h | 33 | ||||
| -rw-r--r-- | include/linux/irq.h | 17 | ||||
| -rw-r--r-- | include/linux/irqdesc.h | 9 | ||||
| -rw-r--r-- | include/linux/irqdomain.h | 2 |
4 files changed, 45 insertions, 16 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 55e672592fa9..7258cd676df4 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -66,9 +66,10 @@ struct gpio_irq_chip { /** * @lock_key: * - * Per GPIO IRQ chip lockdep class. + * Per GPIO IRQ chip lockdep classes. */ struct lock_class_key *lock_key; + struct lock_class_key *request_key; /** * @parent_handler: @@ -323,7 +324,8 @@ extern const char *gpiochip_is_requested(struct gpio_chip *chip, /* add/remove chips */ extern int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data, - struct lock_class_key *lock_key); + struct lock_class_key *lock_key, + struct lock_class_key *request_key); /** * gpiochip_add_data() - register a gpio_chip @@ -350,11 +352,13 @@ extern int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data, */ #ifdef CONFIG_LOCKDEP #define gpiochip_add_data(chip, data) ({ \ - static struct lock_class_key key; \ - gpiochip_add_data_with_key(chip, data, &key); \ + static struct lock_class_key lock_key; \ + static struct lock_class_key request_key; \ + gpiochip_add_data_with_key(chip, data, &lock_key, \ + &request_key); \ }) #else -#define gpiochip_add_data(chip, data) gpiochip_add_data_with_key(chip, data, NULL) +#define gpiochip_add_data(chip, data) gpiochip_add_data_with_key(chip, data, NULL, NULL) #endif static inline int gpiochip_add(struct gpio_chip *chip) @@ -429,7 +433,8 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip, irq_flow_handler_t handler, unsigned int type, bool threaded, - struct lock_class_key *lock_key); + struct lock_class_key *lock_key, + struct lock_class_key *request_key); #ifdef CONFIG_LOCKDEP @@ -445,10 +450,12 @@ static inline int gpiochip_irqchip_add(struct gpio_chip *gpiochip, irq_flow_handler_t handler, unsigned int type) { - static struct lock_class_key key; + static struct lock_class_key lock_key; + static struct lock_class_key request_key; return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq, - handler, type, false, &key); + handler, type, false, + &lock_key, &request_key); } static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip, @@ -458,10 +465,12 @@ static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip, unsigned int type) { - static struct lock_class_key key; + static struct lock_class_key lock_key; + static struct lock_class_key request_key; return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq, - handler, type, true, &key); + handler, type, true, + &lock_key, &request_key); } #else static inline int gpiochip_irqchip_add(struct gpio_chip *gpiochip, @@ -471,7 +480,7 @@ static inline int gpiochip_irqchip_add(struct gpio_chip *gpiochip, unsigned int type) { return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq, - handler, type, false, NULL); + handler, type, false, NULL, NULL); } static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip, @@ -481,7 +490,7 @@ static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip, unsigned int type) { return gpiochip_irqchip_add_key(gpiochip, irqchip, first_irq, - handler, type, true, NULL); + handler, type, true, NULL, NULL); } #endif /* CONFIG_LOCKDEP */ diff --git a/include/linux/irq.h b/include/linux/irq.h index e140f69163b6..a0231e96a578 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -212,6 +212,7 @@ struct irq_data { * mask. Applies only to affinity managed irqs. * IRQD_SINGLE_TARGET - IRQ allows only a single affinity target * IRQD_DEFAULT_TRIGGER_SET - Expected trigger already been set + * IRQD_CAN_RESERVE - Can use reservation mode */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -233,6 +234,7 @@ enum { IRQD_MANAGED_SHUTDOWN = (1 << 23), IRQD_SINGLE_TARGET = (1 << 24), IRQD_DEFAULT_TRIGGER_SET = (1 << 25), + IRQD_CAN_RESERVE = (1 << 26), }; #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors) @@ -377,6 +379,21 @@ static inline bool irqd_is_managed_and_shutdown(struct irq_data *d) return __irqd_to_state(d) & IRQD_MANAGED_SHUTDOWN; } +static inline void irqd_set_can_reserve(struct irq_data *d) +{ + __irqd_to_state(d) |= IRQD_CAN_RESERVE; +} + +static inline void irqd_clr_can_reserve(struct irq_data *d) +{ + __irqd_to_state(d) &= ~IRQD_CAN_RESERVE; +} + +static inline bool irqd_can_reserve(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_CAN_RESERVE; +} + #undef __irqd_to_state static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 39fb3700f7a9..25b33b664537 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -255,12 +255,15 @@ static inline bool irq_is_percpu_devid(unsigned int irq) } static inline void -irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class) +irq_set_lockdep_class(unsigned int irq, struct lock_class_key *lock_class, + struct lock_class_key *request_class) { struct irq_desc *desc = irq_to_desc(irq); - if (desc) - lockdep_set_class(&desc->lock, class); + if (desc) { + lockdep_set_class(&desc->lock, lock_class); + lockdep_set_class(&desc->request_mutex, request_class); + } } #ifdef CONFIG_IRQ_PREFLOW_FASTEOI diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index a34355d19546..48c7e86bb556 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -113,7 +113,7 @@ struct irq_domain_ops { unsigned int nr_irqs, void *arg); void (*free)(struct irq_domain *d, unsigned int virq, unsigned int nr_irqs); - int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool early); + int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, unsigned long *out_hwirq, unsigned int *out_type); |