// SPDX-License-Identifier: (GPL-2.0+ OR MIT) | |
/* | |
* Copyright (c) 2018 Microsemi Corporation | |
*/ | |
#include <common.h> | |
#include <asm/io.h> | |
#include <linux/bitops.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)); | |
} |