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gpio: of: Break out OF-only code

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The core gpiolib should not contain any OF/device tree-only
code. Try to break out the main part of it and push it down
into the optional gpiolib-of.c part of the library.

Create a local gpiolib-of.h header and move stuff around a
bit to get a clean cut.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190717071001.3858-1-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij
2019-07-17 09:10:01 +02:00
parent f8650b8ff6
commit f626d6dfb7
4 changed files with 167 additions and 132 deletions
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27
drivers/gpio/gpiolib.h
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@@ -16,7 +16,6 @@
#include <linux/module.h>
#include <linux/cdev.h>
enum of_gpio_flags;
struct acpi_device;
/**
@@ -92,32 +91,6 @@ struct acpi_gpio_info {
/* gpio suffixes used for ACPI and device tree lookup */
static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };
#ifdef CONFIG_OF_GPIO
struct gpio_desc *of_find_gpio(struct device *dev,
const char *con_id,
unsigned int idx,
unsigned long *lookupflags);
struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags);
int of_gpiochip_add(struct gpio_chip *gc);
void of_gpiochip_remove(struct gpio_chip *gc);
#else
static inline struct gpio_desc *of_find_gpio(struct device *dev,
const char *con_id,
unsigned int idx,
unsigned long *lookupflags)
{
return ERR_PTR(-ENOENT);
}
static inline struct gpio_desc *of_get_named_gpiod_flags(struct device_node *np,
const char *list_name, int index, enum of_gpio_flags *flags)
{
return ERR_PTR(-ENOENT);
}
static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
#endif /* CONFIG_OF_GPIO */
#ifdef CONFIG_ACPI
void acpi_gpiochip_add(struct gpio_chip *chip);
void acpi_gpiochip_remove(struct gpio_chip *chip);