of_fixup_status enables or disables the status property of a
given node with a device tree fixup.
Signed-off-by: Teresa Remmet <t.remmet@xxxxxxxxx>
---
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 <common.h>
+#include <of.h>
+#include <command.h>
+#include <malloc.h>
+#include <complete.h>
+#include <asm/byteorder.h>
+#include <linux/err.h>
+#include <getopt.h>
+#include <string.h>
+
+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@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
