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https://github.com/AsahiLinux/u-boot
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8991fed97d
We can remove common.h from most cases of the code here, and only a few places need an additional header instead. Signed-off-by: Tom Rini <trini@konsulko.com>
33 lines
638 B
C
33 lines
638 B
C
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (c) 2018 Microsemi Corporation
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*/
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#include <asm/io.h>
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#include <linux/bitops.h>
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void mscc_gpio_set_alternate(int gpio, int mode)
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{
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u32 mask = BIT(gpio);
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u32 val0, val1;
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val0 = readl(BASE_DEVCPU_GCB + GPIO_ALT(0));
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val1 = readl(BASE_DEVCPU_GCB + GPIO_ALT(1));
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if (mode == 1) {
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val0 |= mask;
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val1 &= ~mask;
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} else if (mode == 2) {
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val0 &= ~mask;
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val1 |= mask;
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} else if (mode == 3) {
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val0 |= mask;
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val1 |= mask;
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} else {
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val0 &= ~mask;
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val1 &= ~mask;
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}
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writel(val0, BASE_DEVCPU_GCB + GPIO_ALT(0));
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writel(val1, BASE_DEVCPU_GCB + GPIO_ALT(1));
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}
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