diff options
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/consumer.h | 51 | ||||
| -rw-r--r-- | include/linux/gpio/driver.h | 46 | ||||
| -rw-r--r-- | include/linux/gpio/gpio-reg.h | 13 | ||||
| -rw-r--r-- | include/linux/gpio/machine.h | 9 |
4 files changed, 73 insertions, 46 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index fb0fde686cb1..8f702fcbe485 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -135,10 +135,15 @@ int desc_to_gpio(const struct gpio_desc *desc); struct fwnode_handle; struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, - const char *propname); -struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, - const char *con_id, - struct fwnode_handle *child); + const char *propname, int index, + enum gpiod_flags dflags, + const char *label); +struct gpio_desc *devm_fwnode_get_index_gpiod_from_child(struct device *dev, + const char *con_id, int index, + struct fwnode_handle *child, + enum gpiod_flags flags, + const char *label); + #else /* CONFIG_GPIOLIB */ static inline int gpiod_count(struct device *dev, const char *con_id) @@ -165,14 +170,14 @@ static inline struct gpio_desc *__must_check gpiod_get_optional(struct device *dev, const char *con_id, enum gpiod_flags flags) { - return ERR_PTR(-ENOSYS); + return NULL; } static inline struct gpio_desc *__must_check gpiod_get_index_optional(struct device *dev, const char *con_id, unsigned int index, enum gpiod_flags flags) { - return ERR_PTR(-ENOSYS); + return NULL; } static inline struct gpio_descs *__must_check @@ -186,7 +191,7 @@ static inline struct gpio_descs *__must_check gpiod_get_array_optional(struct device *dev, const char *con_id, enum gpiod_flags flags) { - return ERR_PTR(-ENOSYS); + return NULL; } static inline void gpiod_put(struct gpio_desc *desc) @@ -226,14 +231,14 @@ static inline struct gpio_desc *__must_check devm_gpiod_get_optional(struct device *dev, const char *con_id, enum gpiod_flags flags) { - return ERR_PTR(-ENOSYS); + return NULL; } static inline struct gpio_desc *__must_check devm_gpiod_get_index_optional(struct device *dev, const char *con_id, unsigned int index, enum gpiod_flags flags) { - return ERR_PTR(-ENOSYS); + return NULL; } static inline struct gpio_descs *__must_check @@ -247,7 +252,7 @@ static inline struct gpio_descs *__must_check devm_gpiod_get_array_optional(struct device *dev, const char *con_id, enum gpiod_flags flags) { - return ERR_PTR(-ENOSYS); + return NULL; } static inline void devm_gpiod_put(struct device *dev, struct gpio_desc *desc) @@ -411,20 +416,38 @@ static inline int desc_to_gpio(const struct gpio_desc *desc) /* Child properties interface */ struct fwnode_handle; -static inline struct gpio_desc *fwnode_get_named_gpiod( - struct fwnode_handle *fwnode, const char *propname) +static inline +struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, + const char *propname, int index, + enum gpiod_flags dflags, + const char *label) { return ERR_PTR(-ENOSYS); } -static inline struct gpio_desc *devm_get_gpiod_from_child( - struct device *dev, const char *con_id, struct fwnode_handle *child) +static inline +struct gpio_desc *devm_fwnode_get_index_gpiod_from_child(struct device *dev, + const char *con_id, int index, + struct fwnode_handle *child, + enum gpiod_flags flags, + const char *label) { return ERR_PTR(-ENOSYS); } #endif /* CONFIG_GPIOLIB */ +static inline +struct gpio_desc *devm_fwnode_get_gpiod_from_child(struct device *dev, + const char *con_id, + struct fwnode_handle *child, + enum gpiod_flags flags, + const char *label) +{ + return devm_fwnode_get_index_gpiod_from_child(dev, con_id, 0, child, + flags, label); +} + #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS) int gpiod_export(struct gpio_desc *desc, bool direction_may_change); diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index e973faba69dc..af20369ec8e7 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -8,6 +8,7 @@ #include <linux/irqdomain.h> #include <linux/lockdep.h> #include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinconf-generic.h> struct gpio_desc; struct of_phandle_args; @@ -19,18 +20,6 @@ struct module; #ifdef CONFIG_GPIOLIB /** - * enum single_ended_mode - mode for single ended operation - * @LINE_MODE_PUSH_PULL: normal mode for a GPIO line, drive actively high/low - * @LINE_MODE_OPEN_DRAIN: set line to be open drain - * @LINE_MODE_OPEN_SOURCE: set line to be open source - */ -enum single_ended_mode { - LINE_MODE_PUSH_PULL, - LINE_MODE_OPEN_DRAIN, - LINE_MODE_OPEN_SOURCE, -}; - -/** * struct gpio_chip - abstract a GPIO controller * @label: a functional name for the GPIO device, such as a part * number or the name of the SoC IP-block implementing it. @@ -48,16 +37,8 @@ enum single_ended_mode { * @get: returns value for signal "offset", 0=low, 1=high, or negative error * @set: assigns output value for signal "offset" * @set_multiple: assigns output values for multiple signals defined by "mask" - * @set_debounce: optional hook for setting debounce time for specified gpio in - * interrupt triggered gpio chips - * @set_single_ended: optional hook for setting a line as open drain, open - * source, or non-single ended (restore from open drain/source to normal - * push-pull mode) this should be implemented if the hardware supports - * open drain or open source settings. The GPIOlib will otherwise try - * to emulate open drain/source by not actively driving lines high/low - * if a consumer request this. The driver may return -ENOTSUPP if e.g. - * it supports just open drain but not open source and is called - * with LINE_MODE_OPEN_SOURCE as mode argument. + * @set_config: optional hook for all kinds of settings. Uses the same + * packed config format as generic pinconf. * @to_irq: optional hook supporting non-static gpio_to_irq() mappings; * implementation may not sleep * @dbg_show: optional routine to show contents in debugfs; default code @@ -150,13 +131,9 @@ struct gpio_chip { void (*set_multiple)(struct gpio_chip *chip, unsigned long *mask, unsigned long *bits); - int (*set_debounce)(struct gpio_chip *chip, - unsigned offset, - unsigned debounce); - int (*set_single_ended)(struct gpio_chip *chip, - unsigned offset, - enum single_ended_mode mode); - + int (*set_config)(struct gpio_chip *chip, + unsigned offset, + unsigned long config); int (*to_irq)(struct gpio_chip *chip, unsigned offset); @@ -191,7 +168,7 @@ struct gpio_chip { unsigned int irq_base; irq_flow_handler_t irq_handler; unsigned int irq_default_type; - int irq_chained_parent; + unsigned int irq_chained_parent; bool irq_nested; bool irq_need_valid_mask; unsigned long *irq_valid_mask; @@ -236,6 +213,9 @@ bool gpiochip_line_is_irq(struct gpio_chip *chip, unsigned int offset); bool gpiochip_line_is_open_drain(struct gpio_chip *chip, unsigned int offset); bool gpiochip_line_is_open_source(struct gpio_chip *chip, unsigned int offset); +/* Sleep persistence inquiry for drivers */ +bool gpiochip_line_is_persistent(struct gpio_chip *chip, unsigned int offset); + /* get driver data */ void *gpiochip_get_data(struct gpio_chip *chip); @@ -267,12 +247,12 @@ int bgpio_init(struct gpio_chip *gc, struct device *dev, void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip, struct irq_chip *irqchip, - int parent_irq, + unsigned int parent_irq, irq_flow_handler_t parent_handler); void gpiochip_set_nested_irqchip(struct gpio_chip *gpiochip, struct irq_chip *irqchip, - int parent_irq); + unsigned int parent_irq); int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip, struct irq_chip *irqchip, @@ -340,6 +320,8 @@ static inline int gpiochip_irqchip_add_nested(struct gpio_chip *gpiochip, int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset); void gpiochip_generic_free(struct gpio_chip *chip, unsigned offset); +int gpiochip_generic_config(struct gpio_chip *chip, unsigned offset, + unsigned long config); #ifdef CONFIG_PINCTRL diff --git a/include/linux/gpio/gpio-reg.h b/include/linux/gpio/gpio-reg.h new file mode 100644 index 000000000000..90e0b9060e6d --- /dev/null +++ b/include/linux/gpio/gpio-reg.h @@ -0,0 +1,13 @@ +#ifndef GPIO_REG_H +#define GPIO_REG_H + +struct device; +struct irq_domain; + +struct gpio_chip *gpio_reg_init(struct device *dev, void __iomem *reg, + int base, int num, const char *label, u32 direction, u32 def_out, + const char *const *names, struct irq_domain *irqdom, const int *irqs); + +int gpio_reg_resume(struct gpio_chip *gc); + +#endif diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index c0d712d22b07..6e76b16fcade 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -9,6 +9,8 @@ enum gpio_lookup_flags { GPIO_ACTIVE_LOW = (1 << 0), GPIO_OPEN_DRAIN = (1 << 1), GPIO_OPEN_SOURCE = (1 << 2), + GPIO_SLEEP_MAINTAIN_VALUE = (0 << 3), + GPIO_SLEEP_MAY_LOOSE_VALUE = (1 << 3), }; /** @@ -56,7 +58,14 @@ struct gpiod_lookup_table { .flags = _flags, \ } +#ifdef CONFIG_GPIOLIB void gpiod_add_lookup_table(struct gpiod_lookup_table *table); void gpiod_remove_lookup_table(struct gpiod_lookup_table *table); +#else +static inline +void gpiod_add_lookup_table(struct gpiod_lookup_table *table) {} +static inline +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) {} +#endif #endif /* __LINUX_GPIO_MACHINE_H */ |