xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

gpio: Add new flags to control sleep status of GPIOs

Browse Source 
Add new flags to allow users to specify that they are not concerned with
the status of GPIOs whilst in a sleep/low power state.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Charles Keepax
2017-05-23 15:47:29 +01:00
committed by Linus Walleij
parent f9e3a419aa
commit 05f479bf7d
7 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/gpio/driver.h
View File

@@ -213,6 +213,9 @@ bool gpiochip_line_is_irq(struct gpio_chip *chip, unsigned int offset);
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);
/* Sleep persistence inquiry for drivers */
bool gpiochip_line_is_persistent(struct gpio_chip *chip, unsigned int offset);
/* get driver data */
void *gpiochip_get_data(struct gpio_chip *chip);

2
include/linux/gpio/machine.h
View File

@@ -9,6 +9,8 @@ enum gpio_lookup_flags {
GPIO_ACTIVE_LOW = (1 << 0),
GPIO_OPEN_DRAIN = (1 << 1),
GPIO_OPEN_SOURCE = (1 << 2),
GPIO_SLEEP_MAINTAIN_VALUE = (0 << 3),
GPIO_SLEEP_MAY_LOOSE_VALUE = (1 << 3),
};
/**