2018-05-06 21:58:06 +00:00
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// SPDX-License-Identifier: GPL-2.0+
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2014-09-04 22:27:26 +00:00
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/*
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* Copyright (c) 2014 The Chromium OS Authors.
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*/
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2021-04-27 09:02:19 +00:00
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#define LOG_CATEGORY UCLASS_SERIAL
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2014-09-04 22:27:26 +00:00
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#include <common.h>
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#include <dm.h>
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2019-08-02 15:44:25 +00:00
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#include <env_internal.h>
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2014-09-04 22:27:26 +00:00
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#include <errno.h>
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2020-02-03 14:36:16 +00:00
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#include <malloc.h>
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2014-09-04 22:27:26 +00:00
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#include <os.h>
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#include <serial.h>
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#include <stdio_dev.h>
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2014-10-23 03:37:02 +00:00
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#include <watchdog.h>
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2020-10-31 03:38:53 +00:00
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#include <asm/global_data.h>
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2014-09-04 22:27:26 +00:00
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#include <dm/lists.h>
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#include <dm/device-internal.h>
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2017-06-12 12:21:58 +00:00
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#include <dm/of_access.h>
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2020-05-10 17:40:11 +00:00
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#include <linux/delay.h>
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2014-09-04 22:27:26 +00:00
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DECLARE_GLOBAL_DATA_PTR;
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2014-10-29 19:09:03 +00:00
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/*
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* Table with supported baudrates (defined in config_xyz.h)
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*/
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2022-11-16 18:10:41 +00:00
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static const unsigned long baudrate_table[] = CFG_SYS_BAUDRATE_TABLE;
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2014-10-29 19:09:03 +00:00
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2018-10-01 18:22:20 +00:00
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#if CONFIG_IS_ENABLED(SERIAL_PRESENT)
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2017-06-12 12:21:57 +00:00
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static int serial_check_stdout(const void *blob, struct udevice **devp)
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{
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2019-11-25 13:52:36 +00:00
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int node = -1;
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const char *str, *p, *name;
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int namelen;
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2017-06-12 12:21:57 +00:00
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/* Check for a chosen console */
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2019-11-25 13:52:36 +00:00
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str = fdtdec_get_chosen_prop(blob, "stdout-path");
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if (str) {
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p = strchr(str, ':');
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namelen = p ? p - str : strlen(str);
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node = fdt_path_offset_namelen(blob, str, namelen);
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if (node < 0) {
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/*
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* Deal with things like
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* stdout-path = "serial0:115200n8";
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*
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* We need to look up the alias and then follow it to
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* the correct node.
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*/
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name = fdt_get_alias_namelen(blob, str, namelen);
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2017-06-12 12:21:57 +00:00
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if (name)
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node = fdt_path_offset(blob, name);
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}
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}
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2019-11-25 13:52:36 +00:00
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2017-06-12 12:21:57 +00:00
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if (node < 0)
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node = fdt_path_offset(blob, "console");
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if (!uclass_get_device_by_of_offset(UCLASS_SERIAL, node, devp))
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return 0;
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/*
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* If the console is not marked to be bound before relocation, bind it
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* anyway.
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*/
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if (node > 0 && !lists_bind_fdt(gd->dm_root, offset_to_ofnode(node),
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2021-09-10 14:16:20 +00:00
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devp, NULL, false)) {
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2022-02-21 21:17:37 +00:00
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if (device_get_uclass_id(*devp) == UCLASS_SERIAL &&
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!device_probe(*devp))
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2017-06-12 12:21:57 +00:00
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return 0;
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}
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return -ENODEV;
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}
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2014-09-04 22:27:26 +00:00
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static void serial_find_console_or_panic(void)
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{
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2015-10-18 01:41:17 +00:00
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const void *blob = gd->fdt_blob;
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2014-11-11 01:00:20 +00:00
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struct udevice *dev;
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2018-01-29 12:57:20 +00:00
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#ifdef CONFIG_SERIAL_SEARCH_ALL
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2018-01-25 11:05:42 +00:00
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int ret;
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2018-01-29 12:57:20 +00:00
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#endif
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2014-09-04 22:27:26 +00:00
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2016-07-04 17:58:04 +00:00
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if (CONFIG_IS_ENABLED(OF_PLATDATA)) {
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uclass_first_device(UCLASS_SERIAL, &dev);
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if (dev) {
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gd->cur_serial_dev = dev;
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return;
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}
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} else if (CONFIG_IS_ENABLED(OF_CONTROL) && blob) {
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2017-06-12 12:21:58 +00:00
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/* Live tree has support for stdout */
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if (of_live_active()) {
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struct device_node *np = of_get_stdout();
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if (np && !uclass_get_device_by_ofnode(UCLASS_SERIAL,
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np_to_ofnode(np), &dev)) {
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gd->cur_serial_dev = dev;
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return;
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}
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} else {
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if (!serial_check_stdout(blob, &dev)) {
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gd->cur_serial_dev = dev;
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return;
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}
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2014-11-11 01:00:20 +00:00
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}
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2015-03-06 20:19:03 +00:00
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}
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2022-01-13 02:26:15 +00:00
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if (!IS_ENABLED(CONFIG_SPL_BUILD) || !CONFIG_IS_ENABLED(OF_CONTROL) ||
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!blob) {
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2015-05-12 20:55:05 +00:00
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/*
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2015-11-26 12:38:43 +00:00
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* Try to use CONFIG_CONS_INDEX if available (it is numbered
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* from 1!).
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*
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* Failing that, get the device with sequence number 0, or in
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2018-01-25 11:05:42 +00:00
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* extremis just the first working serial device we can find.
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* But we insist on having a console (even if it is silent).
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2015-11-26 12:38:43 +00:00
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*/
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2014-10-23 03:37:06 +00:00
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#ifdef CONFIG_CONS_INDEX
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#define INDEX (CONFIG_CONS_INDEX - 1)
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#else
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#define INDEX 0
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#endif
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2018-01-29 12:57:20 +00:00
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#ifdef CONFIG_SERIAL_SEARCH_ALL
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2015-05-12 20:55:05 +00:00
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if (!uclass_get_device_by_seq(UCLASS_SERIAL, INDEX, &dev) ||
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2018-01-25 11:05:42 +00:00
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!uclass_get_device(UCLASS_SERIAL, INDEX, &dev)) {
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2020-12-19 17:40:10 +00:00
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if (dev_get_flags(dev) & DM_FLAG_ACTIVATED) {
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2018-01-25 11:05:42 +00:00
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gd->cur_serial_dev = dev;
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return;
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}
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}
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/* Search for any working device */
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for (ret = uclass_first_device_check(UCLASS_SERIAL, &dev);
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dev;
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ret = uclass_next_device_check(&dev)) {
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if (!ret) {
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/* Device did succeed probing */
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gd->cur_serial_dev = dev;
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return;
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}
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2015-05-12 20:55:05 +00:00
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}
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2018-01-29 12:57:20 +00:00
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#else
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if (!uclass_get_device_by_seq(UCLASS_SERIAL, INDEX, &dev) ||
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!uclass_get_device(UCLASS_SERIAL, INDEX, &dev) ||
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2022-10-12 19:57:59 +00:00
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!uclass_first_device_err(UCLASS_SERIAL, &dev)) {
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2018-01-29 12:57:20 +00:00
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gd->cur_serial_dev = dev;
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return;
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}
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#endif
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2014-10-23 03:37:06 +00:00
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#undef INDEX
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2015-05-12 20:55:05 +00:00
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}
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2015-08-08 15:45:18 +00:00
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#ifdef CONFIG_REQUIRE_SERIAL_CONSOLE
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2015-05-12 20:55:05 +00:00
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panic_str("No serial driver found");
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2015-08-08 15:45:18 +00:00
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#endif
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2014-09-04 22:27:26 +00:00
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}
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2018-10-01 18:22:20 +00:00
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#endif /* CONFIG_SERIAL_PRESENT */
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2014-09-04 22:27:26 +00:00
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/* Called prior to relocation */
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int serial_init(void)
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{
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2018-10-01 18:22:20 +00:00
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#if CONFIG_IS_ENABLED(SERIAL_PRESENT)
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2014-09-04 22:27:26 +00:00
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serial_find_console_or_panic();
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gd->flags |= GD_FLG_SERIAL_READY;
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2020-02-02 18:15:17 +00:00
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serial_setbrg();
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2018-10-01 18:22:20 +00:00
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#endif
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2014-09-04 22:27:26 +00:00
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return 0;
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}
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/* Called after relocation */
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2020-07-24 11:12:22 +00:00
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int serial_initialize(void)
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2014-09-04 22:27:26 +00:00
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{
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2020-12-09 05:12:04 +00:00
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/* Scanning uclass to probe devices */
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if (IS_ENABLED(CONFIG_SERIAL_PROBE_ALL)) {
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int ret;
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ret = uclass_probe_all(UCLASS_SERIAL);
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if (ret)
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return ret;
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}
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2020-07-24 11:12:22 +00:00
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return serial_init();
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2014-09-04 22:27:26 +00:00
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}
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2014-10-23 13:26:08 +00:00
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static void _serial_putc(struct udevice *dev, char ch)
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2014-09-04 22:27:26 +00:00
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{
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2014-10-23 13:26:06 +00:00
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struct dm_serial_ops *ops = serial_get_ops(dev);
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2014-09-04 22:27:26 +00:00
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int err;
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2016-03-02 03:00:36 +00:00
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if (ch == '\n')
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_serial_putc(dev, '\r');
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2014-09-04 22:27:26 +00:00
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do {
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2014-10-23 13:26:06 +00:00
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err = ops->putc(dev, ch);
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2014-09-04 22:27:26 +00:00
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} while (err == -EAGAIN);
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}
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2022-04-04 18:17:57 +00:00
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static int __serial_puts(struct udevice *dev, const char *str, size_t len)
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{
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struct dm_serial_ops *ops = serial_get_ops(dev);
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do {
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ssize_t written = ops->puts(dev, str, len);
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if (written < 0)
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return written;
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str += written;
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len -= written;
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} while (len);
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return 0;
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}
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2014-10-23 13:26:08 +00:00
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static void _serial_puts(struct udevice *dev, const char *str)
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2014-10-02 01:57:23 +00:00
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{
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2022-03-22 20:59:34 +00:00
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struct dm_serial_ops *ops = serial_get_ops(dev);
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if (!CONFIG_IS_ENABLED(SERIAL_PUTS) || !ops->puts) {
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while (*str)
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_serial_putc(dev, *str++);
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return;
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}
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do {
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const char *newline = strchrnul(str, '\n');
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2022-04-04 18:17:57 +00:00
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size_t len = newline - str;
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2022-03-22 20:59:34 +00:00
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2022-04-04 18:17:57 +00:00
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if (__serial_puts(dev, str, len))
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return;
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2022-03-22 20:59:34 +00:00
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2022-04-04 18:17:57 +00:00
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if (*newline && __serial_puts(dev, "\r\n", 2))
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return;
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2022-03-22 20:59:34 +00:00
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2022-04-04 18:17:57 +00:00
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str += len + !!*newline;
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2022-03-22 20:59:34 +00:00
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} while (*str);
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2014-10-02 01:57:23 +00:00
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}
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2022-09-05 09:31:18 +00:00
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#ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
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static void _serial_flush(struct udevice *dev)
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{
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struct dm_serial_ops *ops = serial_get_ops(dev);
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if (!ops->pending)
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return;
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while (ops->pending(dev, false) > 0)
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;
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}
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#endif
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2017-08-16 15:37:16 +00:00
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static int __serial_getc(struct udevice *dev)
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2014-09-04 22:27:26 +00:00
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{
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2014-10-23 13:26:08 +00:00
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struct dm_serial_ops *ops = serial_get_ops(dev);
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int err;
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2014-09-04 22:27:26 +00:00
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2014-10-23 13:26:08 +00:00
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do {
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err = ops->getc(dev);
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if (err == -EAGAIN)
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2022-09-02 12:10:46 +00:00
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schedule();
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2014-10-23 13:26:08 +00:00
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} while (err == -EAGAIN);
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2014-09-04 22:27:26 +00:00
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2014-10-23 13:26:08 +00:00
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return err >= 0 ? err : 0;
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2014-09-04 22:27:26 +00:00
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}
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2017-08-16 15:37:16 +00:00
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static int __serial_tstc(struct udevice *dev)
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2014-09-04 22:27:26 +00:00
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{
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2014-10-23 13:26:08 +00:00
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struct dm_serial_ops *ops = serial_get_ops(dev);
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2014-09-04 22:27:26 +00:00
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if (ops->pending)
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2014-10-23 13:26:08 +00:00
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return ops->pending(dev, true);
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2014-09-04 22:27:26 +00:00
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return 1;
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}
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2017-08-16 15:37:16 +00:00
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#if CONFIG_IS_ENABLED(SERIAL_RX_BUFFER)
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static int _serial_tstc(struct udevice *dev)
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{
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struct serial_dev_priv *upriv = dev_get_uclass_priv(dev);
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/* Read all available chars into the RX buffer */
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while (__serial_tstc(dev)) {
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upriv->buf[upriv->wr_ptr++] = __serial_getc(dev);
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upriv->wr_ptr %= CONFIG_SERIAL_RX_BUFFER_SIZE;
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}
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return upriv->rd_ptr != upriv->wr_ptr ? 1 : 0;
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}
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static int _serial_getc(struct udevice *dev)
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{
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struct serial_dev_priv *upriv = dev_get_uclass_priv(dev);
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char val;
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2018-08-03 11:38:43 +00:00
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if (upriv->rd_ptr == upriv->wr_ptr)
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return __serial_getc(dev);
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2017-08-16 15:37:16 +00:00
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val = upriv->buf[upriv->rd_ptr++];
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upriv->rd_ptr %= CONFIG_SERIAL_RX_BUFFER_SIZE;
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return val;
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}
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#else /* CONFIG_IS_ENABLED(SERIAL_RX_BUFFER) */
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static int _serial_getc(struct udevice *dev)
|
|
|
|
{
|
|
|
|
return __serial_getc(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int _serial_tstc(struct udevice *dev)
|
|
|
|
{
|
|
|
|
return __serial_tstc(dev);
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_IS_ENABLED(SERIAL_RX_BUFFER) */
|
|
|
|
|
2014-10-23 13:26:08 +00:00
|
|
|
void serial_putc(char ch)
|
2014-09-04 22:27:26 +00:00
|
|
|
{
|
2015-08-08 15:45:18 +00:00
|
|
|
if (gd->cur_serial_dev)
|
|
|
|
_serial_putc(gd->cur_serial_dev, ch);
|
2014-10-23 13:26:08 +00:00
|
|
|
}
|
2014-09-04 22:27:26 +00:00
|
|
|
|
2014-10-23 13:26:08 +00:00
|
|
|
void serial_puts(const char *str)
|
|
|
|
{
|
2015-08-08 15:45:18 +00:00
|
|
|
if (gd->cur_serial_dev)
|
|
|
|
_serial_puts(gd->cur_serial_dev, str);
|
2014-09-04 22:27:26 +00:00
|
|
|
}
|
|
|
|
|
2022-09-05 09:31:19 +00:00
|
|
|
#ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
|
|
|
|
void serial_flush(void)
|
|
|
|
{
|
|
|
|
if (!gd->cur_serial_dev)
|
|
|
|
return;
|
|
|
|
|
|
|
|
_serial_flush(gd->cur_serial_dev);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2014-10-02 01:57:23 +00:00
|
|
|
int serial_getc(void)
|
|
|
|
{
|
2015-08-08 15:45:18 +00:00
|
|
|
if (!gd->cur_serial_dev)
|
|
|
|
return 0;
|
|
|
|
|
2014-11-11 01:00:20 +00:00
|
|
|
return _serial_getc(gd->cur_serial_dev);
|
2014-10-23 13:26:08 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int serial_tstc(void)
|
|
|
|
{
|
2015-08-08 15:45:18 +00:00
|
|
|
if (!gd->cur_serial_dev)
|
|
|
|
return 0;
|
|
|
|
|
2014-11-11 01:00:20 +00:00
|
|
|
return _serial_tstc(gd->cur_serial_dev);
|
2014-10-23 13:26:08 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void serial_setbrg(void)
|
|
|
|
{
|
2015-08-08 15:45:18 +00:00
|
|
|
struct dm_serial_ops *ops;
|
|
|
|
|
|
|
|
if (!gd->cur_serial_dev)
|
|
|
|
return;
|
2014-10-23 13:26:08 +00:00
|
|
|
|
2015-08-08 15:45:18 +00:00
|
|
|
ops = serial_get_ops(gd->cur_serial_dev);
|
2014-10-23 13:26:08 +00:00
|
|
|
if (ops->setbrg)
|
2014-11-11 01:00:20 +00:00
|
|
|
ops->setbrg(gd->cur_serial_dev, gd->baudrate);
|
2014-10-02 01:57:23 +00:00
|
|
|
}
|
|
|
|
|
2018-12-28 21:23:08 +00:00
|
|
|
int serial_getconfig(struct udevice *dev, uint *config)
|
2018-11-20 21:52:32 +00:00
|
|
|
{
|
|
|
|
struct dm_serial_ops *ops;
|
|
|
|
|
2018-12-28 21:23:08 +00:00
|
|
|
ops = serial_get_ops(dev);
|
2018-11-20 21:52:32 +00:00
|
|
|
if (ops->getconfig)
|
2018-12-28 21:23:08 +00:00
|
|
|
return ops->getconfig(dev, config);
|
2018-11-20 21:52:32 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2018-12-28 21:23:09 +00:00
|
|
|
int serial_setconfig(struct udevice *dev, uint config)
|
2018-08-03 13:07:38 +00:00
|
|
|
{
|
|
|
|
struct dm_serial_ops *ops;
|
|
|
|
|
2018-12-28 21:23:09 +00:00
|
|
|
ops = serial_get_ops(dev);
|
2018-08-03 13:07:38 +00:00
|
|
|
if (ops->setconfig)
|
2018-12-28 21:23:09 +00:00
|
|
|
return ops->setconfig(dev, config);
|
2018-08-03 13:07:38 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2018-12-28 21:23:10 +00:00
|
|
|
int serial_getinfo(struct udevice *dev, struct serial_device_info *info)
|
2018-11-20 21:52:33 +00:00
|
|
|
{
|
|
|
|
struct dm_serial_ops *ops;
|
|
|
|
|
|
|
|
if (!info)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
info->baudrate = gd->baudrate;
|
|
|
|
|
2018-12-28 21:23:10 +00:00
|
|
|
ops = serial_get_ops(dev);
|
2018-11-20 21:52:33 +00:00
|
|
|
if (ops->getinfo)
|
2018-12-28 21:23:10 +00:00
|
|
|
return ops->getinfo(dev, info);
|
2018-11-20 21:52:33 +00:00
|
|
|
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2014-09-04 22:27:26 +00:00
|
|
|
void serial_stdio_init(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2022-12-04 15:14:13 +00:00
|
|
|
#if CONFIG_IS_ENABLED(DM_STDIO)
|
2017-06-22 07:48:49 +00:00
|
|
|
|
|
|
|
#if CONFIG_IS_ENABLED(SERIAL_PRESENT)
|
2014-10-02 01:57:23 +00:00
|
|
|
static void serial_stub_putc(struct stdio_dev *sdev, const char ch)
|
2014-09-04 22:27:26 +00:00
|
|
|
{
|
2014-10-23 13:26:08 +00:00
|
|
|
_serial_putc(sdev->priv, ch);
|
2014-09-04 22:27:26 +00:00
|
|
|
}
|
|
|
|
|
2017-06-22 07:48:49 +00:00
|
|
|
static void serial_stub_puts(struct stdio_dev *sdev, const char *str)
|
2014-09-04 22:27:26 +00:00
|
|
|
{
|
2014-10-23 13:26:08 +00:00
|
|
|
_serial_puts(sdev->priv, str);
|
2014-09-04 22:27:26 +00:00
|
|
|
}
|
|
|
|
|
2022-09-05 09:31:18 +00:00
|
|
|
#ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
|
|
|
|
static void serial_stub_flush(struct stdio_dev *sdev)
|
|
|
|
{
|
|
|
|
_serial_flush(sdev->priv);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2017-06-22 07:48:49 +00:00
|
|
|
static int serial_stub_getc(struct stdio_dev *sdev)
|
2014-09-04 22:27:26 +00:00
|
|
|
{
|
2014-10-23 13:26:08 +00:00
|
|
|
return _serial_getc(sdev->priv);
|
2014-09-04 22:27:26 +00:00
|
|
|
}
|
|
|
|
|
2017-06-22 07:48:49 +00:00
|
|
|
static int serial_stub_tstc(struct stdio_dev *sdev)
|
2014-09-04 22:27:26 +00:00
|
|
|
{
|
2014-10-23 13:26:08 +00:00
|
|
|
return _serial_tstc(sdev->priv);
|
2014-09-04 22:27:26 +00:00
|
|
|
}
|
2017-06-22 07:48:49 +00:00
|
|
|
#endif
|
2022-02-02 12:55:19 +00:00
|
|
|
#endif
|
2014-09-04 22:27:26 +00:00
|
|
|
|
2014-10-29 19:09:03 +00:00
|
|
|
/**
|
|
|
|
* on_baudrate() - Update the actual baudrate when the env var changes
|
|
|
|
*
|
|
|
|
* This will check for a valid baudrate and only apply it if valid.
|
|
|
|
*/
|
|
|
|
static int on_baudrate(const char *name, const char *value, enum env_op op,
|
|
|
|
int flags)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int baudrate;
|
|
|
|
|
|
|
|
switch (op) {
|
|
|
|
case env_op_create:
|
|
|
|
case env_op_overwrite:
|
|
|
|
/*
|
|
|
|
* Switch to new baudrate if new baudrate is supported
|
|
|
|
*/
|
2021-07-24 15:03:30 +00:00
|
|
|
baudrate = dectoul(value, NULL);
|
2014-10-29 19:09:03 +00:00
|
|
|
|
|
|
|
/* Not actually changing */
|
|
|
|
if (gd->baudrate == baudrate)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) {
|
|
|
|
if (baudrate == baudrate_table[i])
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(baudrate_table)) {
|
|
|
|
if ((flags & H_FORCE) == 0)
|
|
|
|
printf("## Baudrate %d bps not supported\n",
|
|
|
|
baudrate);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
if ((flags & H_INTERACTIVE) != 0) {
|
|
|
|
printf("## Switch baudrate to %d bps and press ENTER ...\n",
|
|
|
|
baudrate);
|
|
|
|
udelay(50000);
|
2022-09-05 09:31:20 +00:00
|
|
|
flush();
|
2014-10-29 19:09:03 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
gd->baudrate = baudrate;
|
|
|
|
|
|
|
|
serial_setbrg();
|
|
|
|
|
|
|
|
udelay(50000);
|
|
|
|
|
|
|
|
if ((flags & H_INTERACTIVE) != 0)
|
|
|
|
while (1) {
|
2020-10-07 16:11:48 +00:00
|
|
|
if (getchar() == '\r')
|
2014-10-29 19:09:03 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
case env_op_delete:
|
|
|
|
printf("## Baudrate may not be deleted\n");
|
|
|
|
return 1;
|
|
|
|
default:
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
U_BOOT_ENV_CALLBACK(baudrate, on_baudrate);
|
|
|
|
|
2015-12-14 04:36:58 +00:00
|
|
|
#if CONFIG_IS_ENABLED(SERIAL_PRESENT)
|
2014-09-04 22:27:26 +00:00
|
|
|
static int serial_post_probe(struct udevice *dev)
|
|
|
|
{
|
|
|
|
struct dm_serial_ops *ops = serial_get_ops(dev);
|
2022-12-04 15:14:13 +00:00
|
|
|
#if CONFIG_IS_ENABLED(DM_STDIO)
|
2015-03-05 19:25:20 +00:00
|
|
|
struct serial_dev_priv *upriv = dev_get_uclass_priv(dev);
|
2014-11-11 00:16:48 +00:00
|
|
|
struct stdio_dev sdev;
|
|
|
|
#endif
|
2014-09-04 22:27:26 +00:00
|
|
|
int ret;
|
|
|
|
|
2015-02-02 15:31:59 +00:00
|
|
|
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
|
|
|
|
if (ops->setbrg)
|
|
|
|
ops->setbrg += gd->reloc_off;
|
|
|
|
if (ops->getc)
|
|
|
|
ops->getc += gd->reloc_off;
|
|
|
|
if (ops->putc)
|
|
|
|
ops->putc += gd->reloc_off;
|
|
|
|
if (ops->pending)
|
|
|
|
ops->pending += gd->reloc_off;
|
|
|
|
if (ops->clear)
|
|
|
|
ops->clear += gd->reloc_off;
|
2018-11-20 21:52:32 +00:00
|
|
|
if (ops->getconfig)
|
|
|
|
ops->getconfig += gd->reloc_off;
|
2018-08-03 13:07:38 +00:00
|
|
|
if (ops->setconfig)
|
|
|
|
ops->setconfig += gd->reloc_off;
|
2022-11-19 23:45:44 +00:00
|
|
|
#if CFG_POST & CONFIG_SYS_POST_UART
|
2015-02-02 15:31:59 +00:00
|
|
|
if (ops->loop)
|
2018-11-05 16:24:03 +00:00
|
|
|
ops->loop += gd->reloc_off;
|
2015-02-02 15:31:59 +00:00
|
|
|
#endif
|
2018-11-20 21:52:33 +00:00
|
|
|
if (ops->getinfo)
|
|
|
|
ops->getinfo += gd->reloc_off;
|
2015-02-02 15:31:59 +00:00
|
|
|
#endif
|
2014-09-04 22:27:26 +00:00
|
|
|
/* Set the baud rate */
|
|
|
|
if (ops->setbrg) {
|
|
|
|
ret = ops->setbrg(dev, gd->baudrate);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2022-12-04 15:14:13 +00:00
|
|
|
#if CONFIG_IS_ENABLED(DM_STDIO)
|
2014-09-04 22:27:26 +00:00
|
|
|
if (!(gd->flags & GD_FLG_RELOC))
|
|
|
|
return 0;
|
|
|
|
memset(&sdev, '\0', sizeof(sdev));
|
|
|
|
|
|
|
|
strncpy(sdev.name, dev->name, sizeof(sdev.name));
|
2017-07-27 15:31:04 +00:00
|
|
|
sdev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_DM;
|
2014-09-04 22:27:26 +00:00
|
|
|
sdev.priv = dev;
|
|
|
|
sdev.putc = serial_stub_putc;
|
|
|
|
sdev.puts = serial_stub_puts;
|
2022-09-05 09:31:18 +00:00
|
|
|
STDIO_DEV_ASSIGN_FLUSH(&sdev, serial_stub_flush);
|
2014-09-04 22:27:26 +00:00
|
|
|
sdev.getc = serial_stub_getc;
|
|
|
|
sdev.tstc = serial_stub_tstc;
|
2017-08-16 15:37:16 +00:00
|
|
|
|
|
|
|
#if CONFIG_IS_ENABLED(SERIAL_RX_BUFFER)
|
|
|
|
/* Allocate the RX buffer */
|
|
|
|
upriv->buf = malloc(CONFIG_SERIAL_RX_BUFFER_SIZE);
|
|
|
|
#endif
|
|
|
|
|
2014-09-04 22:27:26 +00:00
|
|
|
stdio_register_dev(&sdev, &upriv->sdev);
|
2014-11-11 00:16:48 +00:00
|
|
|
#endif
|
2014-09-04 22:27:26 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int serial_pre_remove(struct udevice *dev)
|
|
|
|
{
|
2016-10-18 02:13:02 +00:00
|
|
|
#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
|
2015-03-05 19:25:20 +00:00
|
|
|
struct serial_dev_priv *upriv = dev_get_uclass_priv(dev);
|
2014-09-04 22:27:26 +00:00
|
|
|
|
2017-04-24 07:48:01 +00:00
|
|
|
if (stdio_deregister_dev(upriv->sdev, true))
|
2014-09-04 22:27:26 +00:00
|
|
|
return -EPERM;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
UCLASS_DRIVER(serial) = {
|
|
|
|
.id = UCLASS_SERIAL,
|
|
|
|
.name = "serial",
|
2015-01-25 15:27:05 +00:00
|
|
|
.flags = DM_UC_FLAG_SEQ_ALIAS,
|
2014-09-04 22:27:26 +00:00
|
|
|
.post_probe = serial_post_probe,
|
|
|
|
.pre_remove = serial_pre_remove,
|
2020-12-03 23:55:17 +00:00
|
|
|
.per_device_auto = sizeof(struct serial_dev_priv),
|
2014-09-04 22:27:26 +00:00
|
|
|
};
|
2015-12-14 04:36:58 +00:00
|
|
|
#endif
|