android_kernel_xiaomi_sm8350/include/asm-arm/arch-orion/gpio.h
Herbert Valerio Riedel b11e9e020c [ARM] Orion: provide GPIO method for enabling hardware assisted blinking
This is a pre-requisite for implementing proper hardware accelerated
GPIO LED flashing, and since we want proper locking, it's sensible to provide
the orion specific orion_gpio_set_blink() implementation within
mach-orion/gpio.c. The functions orion_gpio_set_blink() and gpio_set_value()
implicitly turn off each others state.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Acked-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-26 15:03:46 +00:00

29 lines
850 B
C

/*
* include/asm-arm/arch-orion/gpio.h
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
extern int gpio_request(unsigned pin, const char *label);
extern void gpio_free(unsigned pin);
extern int gpio_direction_input(unsigned pin);
extern int gpio_direction_output(unsigned pin, int value);
extern int gpio_get_value(unsigned pin);
extern void gpio_set_value(unsigned pin, int value);
extern void orion_gpio_set_blink(unsigned pin, int blink);
extern void gpio_display(void); /* debug */
static inline int gpio_to_irq(int pin)
{
return pin + IRQ_ORION_GPIO_START;
}
static inline int irq_to_gpio(int irq)
{
return irq - IRQ_ORION_GPIO_START;
}
#include <asm-generic/gpio.h> /* cansleep wrappers */