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gpio: Pass a flag to gpiochip_request_own_desc()

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Before things go out of hand, make it possible to pass
flags when requesting "own" descriptors from a gpio_chip.
This is necessary if the chip wants to request a GPIO with
active low semantics, for example.

Cc: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Roger Quadros <rogerq@ti.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2018-09-04 13:31:45 +02:00
parent 67566ae474
commit 21abf10381
9 changed files with 34 additions and 19 deletions
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4
include/linux/gpio/driver.h
View file

@ -17,6 +17,7 @@ struct device_node;
struct seq_file;
struct gpio_device;
struct module;
enum gpiod_flags;
#ifdef CONFIG_GPIOLIB
@ -604,7 +605,8 @@ gpiochip_remove_pin_ranges(struct gpio_chip *chip)
#endif /* CONFIG_PINCTRL */
struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum,
const char *label);
const char *label,
enum gpiod_flags flags);
void gpiochip_free_own_desc(struct gpio_desc *desc);
#else /* CONFIG_GPIOLIB */