mirror of
https://github.com/linux-msm/cdba.git
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Bartosz Golaszewski
2a820ca52a
PIC32CX is a newer debug board used on automotive platforms like sa8797p. It uses human-readable commands over serial but speaks a different dialect than alpaca. Add a new driver to support it and extend available config options. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
90 lines
1.7 KiB
C
90 lines
1.7 KiB
C
/*
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* Copyright (c) 2026 Qualcomm Technologies, Inc. and/or its subsidiaries
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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 <err.h>
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#include <stdarg.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 <sys/types.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 pic32cx {
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int fd;
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struct termios tios;
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bool fastboot_pressed;
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};
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static void pic32cx_device_write(struct pic32cx *pic32cx, const char *fmt, ...)
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{
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char buf[32];
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va_list va;
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int count;
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va_start(va, fmt);
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count = vsnprintf(buf, sizeof(buf), fmt, va);
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va_end(va);
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write(pic32cx->fd, buf, count);
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}
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static void pic32cx_device_power(struct pic32cx *pic32cx, int on)
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{
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pic32cx_device_write(pic32cx, "PWR_OFF %d\r", !on);
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}
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static void *pic32cx_open(struct device *dev)
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{
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struct pic32cx *pic32cx;
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dev->has_power_key = true;
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pic32cx = calloc(1, sizeof(*pic32cx));
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pic32cx->fd = tty_open(dev->control_dev, &pic32cx->tios);
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if (pic32cx->fd < 0)
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err(1, "failed to open %s", dev->control_dev);
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pic32cx_device_power(pic32cx, 1);
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sleep(5);
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return pic32cx;
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}
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static int pic32cx_power(struct device *dev, bool on)
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{
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pic32cx_device_power(dev->cdb, on);
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return 0;
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}
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static void pic32cx_key(struct device *dev, int key, bool asserted)
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{
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struct pic32cx *pic32cx = dev->cdb;
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switch (key) {
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case DEVICE_KEY_FASTBOOT:
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if (asserted)
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pic32cx->fastboot_pressed = true;
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if (!asserted && pic32cx->fastboot_pressed) {
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pic32cx_device_write(pic32cx, "MD_FASTBOOT\r");
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pic32cx->fastboot_pressed = false;
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}
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break;
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}
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}
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const struct control_ops pic32cx_ops = {
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.open = pic32cx_open,
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.power = pic32cx_power,
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.key = pic32cx_key,
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};
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