diff options
Diffstat (limited to 'src/soc/marvell/mvmap2315/gpio.c')
-rw-r--r-- | src/soc/marvell/mvmap2315/gpio.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/soc/marvell/mvmap2315/gpio.c b/src/soc/marvell/mvmap2315/gpio.c new file mode 100644 index 0000000000..57fc7180d5 --- /dev/null +++ b/src/soc/marvell/mvmap2315/gpio.c @@ -0,0 +1,71 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Marvell, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> + +#include <arch/io.h> +#include <gpio.h> +#include <soc/addressmap.h> +#include <soc/gpio.h> +#include <soc/pinmux.h> + +struct mvmap2315_gpio_regs *gpio_banks[] = { + (struct mvmap2315_gpio_regs *)MVMAP2315_GPIOF_BASE, + (struct mvmap2315_gpio_regs *)MVMAP2315_GPIOG_BASE, + (struct mvmap2315_gpio_regs *)MVMAP2315_GPIOH_BASE, +}; + +int gpio_get(gpio_t gpio) +{ + return (read32(&gpio_banks[gpio.bank]->plr) >> gpio.idx) & 0x1; +} + +void gpio_set(gpio_t gpio, int value) +{ + if (value) + setbits_le32(&gpio_banks[gpio.bank]->psr, 1 << gpio.idx); + else + setbits_le32(&gpio_banks[gpio.bank]->pcr, 1 << gpio.idx); +} + +void gpio_input_pulldown(gpio_t gpio) +{ + set_pinmux(PINMUX(GET_GPIO_PAD(gpio), 0, 1, 0, 0, PULLDOWN)); + clrbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx); +} + +void gpio_input_pullup(gpio_t gpio) +{ + set_pinmux(PINMUX(GET_GPIO_PAD(gpio), 0, 1, 0, 0, PULLUP)); + clrbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx); +} + +void gpio_input(gpio_t gpio) +{ + set_pinmux(PINMUX(GET_GPIO_PAD(gpio), 0, 1, 0, 0, PULLNONE)); + clrbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx); +} + +void gpio_output(gpio_t gpio, int value) +{ + setbits_le32(&gpio_banks[gpio.bank]->pdr, 1 << gpio.idx); + + if (value) + setbits_le32(&gpio_banks[gpio.bank]->psr, 1 << gpio.idx); + else + setbits_le32(&gpio_banks[gpio.bank]->pcr, 1 << gpio.idx); +} |