diff options
| -rw-r--r-- | drivers/gpio/gpiolib.c | 17 | ||||
| -rw-r--r-- | include/linux/gpio/consumer.h | 8 | ||||
| -rw-r--r-- | include/linux/gpio/driver.h | 18 |
3 files changed, 27 insertions, 16 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 9b241bcb5107..9cd7082cca08 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -164,16 +164,17 @@ struct gpio_desc *gpio_to_desc(unsigned gpio) EXPORT_SYMBOL_GPL(gpio_to_desc); /** - * Convert an offset on a certain chip to a corresponding descriptor + * Get the GPIO descriptor corresponding to the given hw number for this chip. */ -static struct gpio_desc *gpiochip_offset_to_desc(struct gpio_chip *chip, - unsigned int offset) +struct gpio_desc *gpiochip_get_desc(struct gpio_chip *chip, + u16 hwnum) { - if (offset >= chip->ngpio) + if (hwnum >= chip->ngpio) return ERR_PTR(-EINVAL); - return &chip->desc[offset]; + return &chip->desc[hwnum]; } +EXPORT_SYMBOL_GPL(gpiochip_get_desc); /** * Convert a GPIO descriptor to the integer namespace. @@ -2190,7 +2191,7 @@ EXPORT_SYMBOL_GPL(gpiod_lock_as_irq); int gpio_lock_as_irq(struct gpio_chip *chip, unsigned int offset) { - return gpiod_lock_as_irq(gpiochip_offset_to_desc(chip, offset)); + return gpiod_lock_as_irq(gpiochip_get_desc(chip, offset)); } EXPORT_SYMBOL_GPL(gpio_lock_as_irq); @@ -2212,7 +2213,7 @@ EXPORT_SYMBOL_GPL(gpiod_unlock_as_irq); void gpio_unlock_as_irq(struct gpio_chip *chip, unsigned int offset) { - return gpiod_unlock_as_irq(gpiochip_offset_to_desc(chip, offset)); + return gpiod_unlock_as_irq(gpiochip_get_desc(chip, offset)); } EXPORT_SYMBOL_GPL(gpio_unlock_as_irq); @@ -2433,7 +2434,7 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id, return ERR_PTR(-EINVAL); } - desc = gpiochip_offset_to_desc(chip, p->chip_hwnum); + desc = gpiochip_get_desc(chip, p->chip_hwnum); *flags = p->flags; return desc; diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index 387994325122..dccda505ba7c 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -7,7 +7,6 @@ #ifdef CONFIG_GPIOLIB struct device; -struct gpio_chip; /** * Opaque descriptor for a GPIO. These are obtained using gpiod_get() and are @@ -60,7 +59,6 @@ int gpiod_to_irq(const struct gpio_desc *desc); /* Convert between the old gpio_ and new gpiod_ interfaces */ struct gpio_desc *gpio_to_desc(unsigned gpio); int desc_to_gpio(const struct gpio_desc *desc); -struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc); #else /* CONFIG_GPIOLIB */ @@ -214,12 +212,6 @@ static inline int desc_to_gpio(const struct gpio_desc *desc) WARN_ON(1); return -EINVAL; } -static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) -{ - /* GPIO can never have been requested */ - WARN_ON(1); - return ERR_PTR(-ENODEV); -} #endif /* CONFIG_GPIOLIB */ diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index a3e181e09636..9fe283642253 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -10,6 +10,8 @@ struct of_phandle_args; struct device_node; struct seq_file; +#ifdef CONFIG_GPIOLIB + /** * struct gpio_chip - abstract a GPIO controller * @label: for diagnostics @@ -129,6 +131,11 @@ extern struct gpio_chip *gpiochip_find(void *data, int gpiod_lock_as_irq(struct gpio_desc *desc); void gpiod_unlock_as_irq(struct gpio_desc *desc); +struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc); + +struct gpio_desc *gpiochip_get_desc(struct gpio_chip *chip, + u16 hwnum); + enum gpio_lookup_flags { GPIO_ACTIVE_HIGH = (0 << 0), GPIO_ACTIVE_LOW = (1 << 0), @@ -183,4 +190,15 @@ struct gpiod_lookup_table { void gpiod_add_lookup_table(struct gpiod_lookup_table *table); +#else /* CONFIG_GPIOLIB */ + +static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) +{ + /* GPIO can never have been requested */ + WARN_ON(1); + return ERR_PTR(-ENODEV); +} + +#endif /* CONFIG_GPIOLIB */ + #endif |