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2f1caa28c0
Split the function tty_open() to a separate file. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
133 lines
2.4 KiB
C
133 lines
2.4 KiB
C
/*
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* Copyright (c) 2018, 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 <sys/socket.h>
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#include <sys/types.h>
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#include <arpa/inet.h>
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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 <termios.h>
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#include <unistd.h>
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#include "device.h"
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#include "tty.h"
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struct alpaca {
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int alpaca_fd;
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struct termios alpaca_tios;
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};
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static int alpaca_device_power(struct alpaca *alpaca, int on);
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static int alpaca_usb_device_power(struct alpaca *alpaca, int on);
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static void *alpaca_open(struct device *dev)
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{
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struct alpaca *alpaca;
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dev->has_power_key = true;
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alpaca = calloc(1, sizeof(*alpaca));
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alpaca->alpaca_fd = tty_open(dev->control_dev, &alpaca->alpaca_tios);
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if (alpaca->alpaca_fd < 0)
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err(1, "failed to open %s", dev->control_dev);
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alpaca_device_power(alpaca, 0);
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if (dev->usb_always_on)
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alpaca_usb_device_power(alpaca, 1);
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else
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alpaca_usb_device_power(alpaca, 0);
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usleep(500000);
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return alpaca;
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}
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static int alpaca_device_power(struct alpaca *alpaca, int on)
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{
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char buf[32];
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int n;
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n = sprintf(buf, "devicePower %d\r", !!on);
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return write(alpaca->alpaca_fd, buf, n);
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}
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static int alpaca_usb_device_power(struct alpaca *alpaca, int on)
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{
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char buf[32];
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int n;
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n = sprintf(buf, "usbDevicePower %d\r", !!on);
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return write(alpaca->alpaca_fd, buf, n);
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}
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static int alpaca_output_bit(struct alpaca *alpaca, int bit, int value)
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{
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char buf[32];
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int n;
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n = sprintf(buf, "ttl outputBit %d %d\r", bit, !!value);
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return write(alpaca->alpaca_fd, buf, n);
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}
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static int alpaca_power_on(struct device *dev)
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{
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alpaca_device_power(dev->cdb, 1);
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return 0;
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}
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static int alpaca_power_off(struct device *dev)
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{
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alpaca_device_power(dev->cdb, 0);
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return 0;
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}
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static int alpaca_power(struct device *dev, bool on)
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{
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if (on)
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return alpaca_power_on(dev);
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else
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return alpaca_power_off(dev);
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}
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static void alpaca_usb(struct device *dev, bool on)
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{
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struct alpaca *alpaca = dev->cdb;
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alpaca_usb_device_power(alpaca, on);
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}
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static void alpaca_key(struct device *dev, int key, bool asserted)
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{
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switch (key) {
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case DEVICE_KEY_FASTBOOT:
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alpaca_output_bit(dev->cdb, 2, asserted);
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break;
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case DEVICE_KEY_POWER:
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alpaca_output_bit(dev->cdb, 1, asserted);
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break;
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}
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}
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const struct control_ops alpaca_ops = {
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.open = alpaca_open,
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.power = alpaca_power,
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.usb = alpaca_usb,
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.key = alpaca_key,
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};
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