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https://github.com/linux-msm/cdba.git
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bde90b4a15
Replace all license headers with the SPDX-License-Identitier headers to follow the current recommendations. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/*
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* Copyright (c) 2023, Linaro Ltd.
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdbool.h>
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/* local-gpio implementation for libgpiod major version 1 */
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#include "local-gpio.h"
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#include <gpiod.h>
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int local_gpio_init(struct local_gpio *local_gpio)
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{
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int i;
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for (i = 0; i < GPIO_COUNT; ++i) {
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struct gpiod_line_request_config cfg;
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if (!local_gpio->options->gpios[i].present)
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continue;
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local_gpio->gpios[i].chip =
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gpiod_chip_open_lookup(local_gpio->options->gpios[i].chip);
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if (!local_gpio->gpios[i].chip) {
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err(1, "Unable to open gpiochip '%s'",
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local_gpio->options->gpios[i].chip);
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return -1;
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}
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cfg.consumer = "cdba";
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cfg.request_type = GPIOD_LINE_REQUEST_DIRECTION_OUTPUT;
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cfg.flags = 0;
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if (local_gpio->options->gpios[i].active_low)
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cfg.flags = GPIOD_LINE_REQUEST_FLAG_ACTIVE_LOW;
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local_gpio->gpios[i].line = gpiod_chip_get_line(local_gpio->gpios[i].chip,
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local_gpio->options->gpios[i].offset);
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if (!local_gpio->gpios[i].line) {
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err(1, "Unable to find gpio %d offset %u",
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i, local_gpio->options->gpios[i].offset);
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return -1;
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}
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if (gpiod_line_request(local_gpio->gpios[i].line, &cfg, 0)) {
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err(1, "Unable to request gpio %d offset %u",
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i, local_gpio->options->gpios[i].offset);
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return -1;
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}
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}
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return 0;
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}
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int local_gpio_set_value(struct local_gpio *local_gpio, unsigned int gpio, bool on)
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{
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return gpiod_line_set_value(local_gpio->gpios[gpio].line, on);
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}
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