summaryrefslogtreecommitdiff
path: root/include/linux/gpio
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@linaro.org>2016-02-16 15:41:42 +0100
committerLinus Walleij <linus.walleij@linaro.org>2016-02-16 15:41:42 +0100
commit143b65d677a59764e438d457bf2510b3fa5b90f8 (patch)
tree586c063e5cf8960fe39b481436a26f961f7fb44f /include/linux/gpio
parentd6f434e8585ac5e4256d894819bf76d02bc2ed3c (diff)
gpio: create an API to detect open drain/source on lines
My left hand merges code to privatize the descriptor handling while my right hand merges drivers that poke around and disrespect with the same gpiolib internals. So let's expose the proper APIs for drivers to ask the gpiolib core if a line is marked as open drain or open source and get some order around things so this driver compiles again. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Nicolas Saenz Julienne <nicolassaenzj@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
-rw-r--r--include/linux/gpio/driver.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index b92ab9efdb69..ff96d0f9fceb 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -199,6 +199,10 @@ int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
bool gpiochip_line_is_irq(struct gpio_chip *chip, unsigned int offset);
+/* Line status inquiry for drivers */
+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);
+
/* get driver data */
void *gpiochip_get_data(struct gpio_chip *chip);