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authorShengzhou Liu <Shengzhou.Liu@freescale.com>2011-10-14 16:26:05 +0800
committerKumar Gala <galak@kernel.crashing.org>2011-10-18 00:36:55 -0500
commit2a523f524090d7fc5600ece9f12d7c955db567d7 (patch)
tree5c7e51b81be51bae4f7ef571861dab675652bb4d /common/fdt_support.c
parent4d28db8a1e8b90e1e3ffd95d7f949b849e33fa2f (diff)
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fdt: Add new fdt_set_node_status & fdt_set_status_by_alias helpers
Add common function fdt_set_node_status() to assist in various locations that we set a nodes status. This function utilizes the status values that are part of the EPAPR spec (on power.org). fdt_set_status_by_alias() is based on fdt_set_node_status() but uses an alias string to identify the node to update. We also add some shortcut functions to help the common cases of setting "okay" and "disabled": fdt_status_okay() fdt_status_disabled() fdt_status_okay_by_alias() fdt_status_disabled_by_alias() Finally, we fixup the corenet_ds ethernet code which previously had a function by the same name that can be replaced with the new helpers. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Gerald Van Baren <vanbaren@cideas.com>
Diffstat (limited to 'common/fdt_support.c')
-rw-r--r--common/fdt_support.c60
1 files changed, 59 insertions, 1 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c
index e0d3fe3..bdda64d 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -2,7 +2,7 @@
* (C) Copyright 2007
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
*
- * Copyright 2010 Freescale Semiconductor, Inc.
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -1259,6 +1259,64 @@ unsigned int fdt_create_phandle(void *fdt, int nodeoffset)
return phandle;
}
+/*
+ * fdt_set_node_status: Set status for the given node
+ *
+ * @fdt: ptr to device tree
+ * @nodeoffset: node to update
+ * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED,
+ * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE
+ * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE
+ */
+int fdt_set_node_status(void *fdt, int nodeoffset,
+ enum fdt_status status, unsigned int error_code)
+{
+ char buf[16];
+ int ret = 0;
+
+ if (nodeoffset < 0)
+ return nodeoffset;
+
+ switch (status) {
+ case FDT_STATUS_OKAY:
+ ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay");
+ break;
+ case FDT_STATUS_DISABLED:
+ ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled");
+ break;
+ case FDT_STATUS_FAIL:
+ ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail");
+ break;
+ case FDT_STATUS_FAIL_ERROR_CODE:
+ sprintf(buf, "fail-%d", error_code);
+ ret = fdt_setprop_string(fdt, nodeoffset, "status", buf);
+ break;
+ default:
+ printf("Invalid fdt status: %x\n", status);
+ ret = -1;
+ break;
+ }
+
+ return ret;
+}
+
+/*
+ * fdt_set_status_by_alias: Set status for the given node given an alias
+ *
+ * @fdt: ptr to device tree
+ * @alias: alias of node to update
+ * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED,
+ * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE
+ * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE
+ */
+int fdt_set_status_by_alias(void *fdt, const char* alias,
+ enum fdt_status status, unsigned int error_code)
+{
+ int offset = fdt_path_offset(fdt, alias);
+
+ return fdt_set_node_status(fdt, offset, status, error_code);
+}
+
#if defined(CONFIG_VIDEO)
int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf)
{