mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-02 16:24:11 +00:00
ee66ee6c34
This patch converts Atmel sam3x MCU series to use register header files from Atmel Software Framework (ASF) library. By using ASF different Atmel SAM MCU series can use common device drivers. Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
127 lines
1.9 KiB
C
127 lines
1.9 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <board.h>
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#include <device.h>
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#include <errno.h>
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#include <init.h>
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#include <pinmux.h>
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#include <soc.h>
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#include <misc/util.h>
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static Pio *_get_port(u32_t pin)
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{
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u32_t port_num = pin / 32;
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switch (port_num) {
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case 0:
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return PIOA;
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case 1:
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return PIOB;
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case 2:
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return PIOC;
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case 3:
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return PIOD;
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default:
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/* return null if pin is outside range */
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return NULL;
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}
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}
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static int pinmux_set(struct device *dev, u32_t pin, u32_t func)
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{
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Pio *port = _get_port(pin);
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u32_t tmp;
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ARG_UNUSED(dev);
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if (!port) {
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return -EINVAL;
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}
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tmp = port->PIO_ABSR;
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if (func) {
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tmp |= (1 << (pin % 32));
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} else {
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tmp &= ~(1 << (pin % 32));
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}
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port->PIO_ABSR = tmp;
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return 0;
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}
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static int pinmux_get(struct device *dev, u32_t pin, u32_t *func)
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{
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Pio *port = _get_port(pin);
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ARG_UNUSED(dev);
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if (!port) {
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return -EINVAL;
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}
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*func = (port->PIO_ABSR & (1 << (pin % 32))) ? 1 : 0;
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return 0;
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}
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static int pinmux_pullup(struct device *dev, u32_t pin, u8_t func)
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{
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Pio *port = _get_port(pin);
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ARG_UNUSED(dev);
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if (!port) {
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return -EINVAL;
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}
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if (func) {
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port->PIO_PUER = (1 << (pin % 32));
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} else {
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port->PIO_PUDR = (1 << (pin % 32));
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}
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return 0;
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}
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static int pinmux_input(struct device *dev, u32_t pin, u8_t func)
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{
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Pio *port = _get_port(pin);
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ARG_UNUSED(dev);
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if (!port) {
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return -EINVAL;
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}
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if (func) {
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port->PIO_ODR = (1 << (pin % 32));
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} else {
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port->PIO_OER = (1 << (pin % 32));
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}
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return 0;
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}
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static const struct pinmux_driver_api api_funcs = {
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.set = pinmux_set,
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.get = pinmux_get,
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.pullup = pinmux_pullup,
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.input = pinmux_input
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};
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static int pinmux_dev_init(struct device *port)
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{
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ARG_UNUSED(port);
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return 0;
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}
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DEVICE_AND_API_INIT(pmux_dev, CONFIG_PINMUX_DEV_NAME,
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&pinmux_dev_init, NULL, NULL,
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PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
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&api_funcs);
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