mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-31 00:11:51 +01:00
e58031acdc
The GPIO control function can be used for controlling alternate functions associated with a GPIO. Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
34 lines
632 B
C
34 lines
632 B
C
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
|
|
/*
|
|
* Copyright (c) 2018 Microsemi Corporation
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
|
|
void mscc_gpio_set_alternate(int gpio, int mode)
|
|
{
|
|
u32 mask = BIT(gpio);
|
|
u32 val0, val1;
|
|
|
|
val0 = readl(BASE_DEVCPU_GCB + GPIO_ALT(0));
|
|
val1 = readl(BASE_DEVCPU_GCB + GPIO_ALT(1));
|
|
|
|
if (mode == 1) {
|
|
val0 |= mask;
|
|
val1 &= ~mask;
|
|
} else if (mode == 2) {
|
|
val0 &= ~mask;
|
|
val1 |= mask;
|
|
} else if (mode == 3) {
|
|
val0 |= mask;
|
|
val1 |= mask;
|
|
} else {
|
|
val0 &= ~mask;
|
|
val1 &= ~mask;
|
|
}
|
|
|
|
writel(val0, BASE_DEVCPU_GCB + GPIO_ALT(0));
|
|
writel(val1, BASE_DEVCPU_GCB + GPIO_ALT(1));
|
|
}
|