diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/mips/mach-mscc/gpio.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/mips/mach-mscc/gpio.c')
| -rw-r--r-- | roms/u-boot/arch/mips/mach-mscc/gpio.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/roms/u-boot/arch/mips/mach-mscc/gpio.c b/roms/u-boot/arch/mips/mach-mscc/gpio.c new file mode 100644 index 000000000..d6b4c5d76 --- /dev/null +++ b/roms/u-boot/arch/mips/mach-mscc/gpio.c @@ -0,0 +1,34 @@ +// 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)); +} |