From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.microcatalog.org.uk ([217.6.246.34] helo=root.phytec.de) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aVdFz-0002kE-Ai for barebox@lists.infradead.org; Tue, 16 Feb 2016 10:53:25 +0000 Received: from idefix.phytec.de (idefix.phytec.de [172.16.0.10]) by root.phytec.de (Postfix) with ESMTP id CD3BDA00431 for ; Tue, 16 Feb 2016 11:53:22 +0100 (CET) From: Teresa Remmet Date: Tue, 16 Feb 2016 11:51:16 +0100 Message-Id: <1455619877-40393-1-git-send-email-t.remmet@phytec.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/2] commands: Add of_fixup_status To: barebox@lists.infradead.org of_fixup_status enables or disables the status property of a given node with a device tree fixup. Signed-off-by: Teresa Remmet --- commands/Kconfig | 16 +++++++ commands/Makefile | 1 + commands/of_fixup_status.c | 101 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 118 insertions(+) create mode 100644 commands/of_fixup_status.c diff --git a/commands/Kconfig b/commands/Kconfig index b4fdc86..9519a44 100644 --- a/commands/Kconfig +++ b/commands/Kconfig @@ -2114,6 +2114,22 @@ config CMD_OF_DISPLAY_TIMINGS -s path select display-timings and register oftree fixup -f dtb work on dtb. Has no effect on -s option +config CMD_OF_FIXUP_STATUS + tristate + select OFTREE + prompt "of_fixup_status" + help + Register a fixup to enable or disable node + + Usage: of_fixup_node [-d] path + + Options: + -d disable node + path Node path or alias + + Register a fixup to enable or disable a device tree node. + Nodes are enabled on default. Disabled with -d. + config CMD_OFTREE tristate select OFTREE diff --git a/commands/Makefile b/commands/Makefile index d985341..8975d4b 100644 --- a/commands/Makefile +++ b/commands/Makefile @@ -78,6 +78,7 @@ obj-$(CONFIG_CMD_OF_PROPERTY) += of_property.o obj-$(CONFIG_CMD_OF_NODE) += of_node.o obj-$(CONFIG_CMD_OF_DUMP) += of_dump.o obj-$(CONFIG_CMD_OF_DISPLAY_TIMINGS) += of_display_timings.o +obj-$(CONFIG_CMD_OF_FIXUP_STATUS) += of_fixup_status.o obj-$(CONFIG_CMD_MAGICVAR) += magicvar.o obj-$(CONFIG_CMD_IOMEM) += iomemport.o obj-$(CONFIG_CMD_LINUX_EXEC) += linux_exec.o diff --git a/commands/of_fixup_status.c b/commands/of_fixup_status.c new file mode 100644 index 0000000..03494cc --- /dev/null +++ b/commands/of_fixup_status.c @@ -0,0 +1,101 @@ +/* + * of_fixup_status.c - Register a fixup to enable or disable nodes in the + * device tree + * + * Copyright (c) 2014-2016 PHYTEC Messtechnik GmbH + * Author: + * Teresa Remmet + * Wadim Egorov + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct fixup_status_data { + char *node; + bool status; +}; + +static int of_fixup_status(struct device_node *root, void *context) +{ + struct fixup_status_data *data = context; + struct device_node *node; + + node = of_find_node_by_path_from(root, data->node); + if (!node) { + pr_err("Could not find node in tree: %s\n", data->node); + return -EINVAL; + } + + if (data->status) + return of_device_enable(node); + else + return of_device_disable(node); +} + +static int do_of_fixup_status(int argc, char *argv[]) +{ + int opt; + bool status = 1; + char *node = NULL; + struct fixup_status_data *data; + + while ((opt = getopt(argc, argv, "d")) > 0) { + switch (opt) { + case 'd': + status = 0; + break; + default: + return COMMAND_ERROR_USAGE; + } + } + + if (optind == argc) + return COMMAND_ERROR_USAGE; + + node = xstrdup(argv[optind]); + + data = xzalloc(sizeof(*data)); + data->node = node; + data->status = status; + + of_register_fixup(of_fixup_status, (void *)data); + + return 0; +} + +BAREBOX_CMD_HELP_START(of_fixup_status) +BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_OPT("-d", "disable node") +BAREBOX_CMD_HELP_OPT("path", "Node path\n") +BAREBOX_CMD_HELP_TEXT("Register a fixup to enable or disable a device tree node.") +BAREBOX_CMD_HELP_TEXT("Nodes are enabled on default. Disabled with -d.") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(of_fixup_status) + .cmd = do_of_fixup_status, + BAREBOX_CMD_DESC("register a fixup to enable or disable node") + BAREBOX_CMD_OPTS("[-d] path") + BAREBOX_CMD_GROUP(CMD_GRP_MISC) + BAREBOX_CMD_COMPLETE(devicetree_file_complete) + BAREBOX_CMD_HELP(cmd_of_fixup_status_help) +BAREBOX_CMD_END -- 1.9.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox