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Subject[PATCH 1/2] gpio: expose gpio_to_chip()
Date
From: Linus Walleij <linus.walleij@linaro.org>

This makes the gpio_to_chip() function available to drivers. The
usecase is when you want to add a few chip-specific operations
apart from the ones exposed in struct gpio_chip.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/gpio/gpiolib.c | 2 +-
include/asm-generic/gpio.h | 1 +
2 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index a971e3d..dc315e9 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -114,7 +114,7 @@ static int gpio_ensure_requested(struct gpio_desc *desc, unsigned offset)
}

/* caller holds gpio_lock *OR* gpio is marked as requested */
-static inline struct gpio_chip *gpio_to_chip(unsigned gpio)
+struct gpio_chip *gpio_to_chip(unsigned gpio)
{
return gpio_desc[gpio].chip;
}
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index fcdcb5d..dd8c815 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -132,6 +132,7 @@ struct gpio_chip {
#endif
};

+extern struct gpio_chip *gpio_to_chip(unsigned gpio);
extern const char *gpiochip_is_requested(struct gpio_chip *chip,
unsigned offset);
extern int __must_check gpiochip_reserve(int start, int ngpio);
--
1.7.3.2


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