[U-Boot] [PATCH 6/8] fsl_dr_usb: Fixup disabled USB controllers nodes in device tree

[Anton Vorontsov <avorontsov@ru.mvista.com>]

We should add status = "disabled" property when USB controller can't
be used (for example when USB pins muxed away to another device).

Also convert whole fdt_fixup_dr_usb() to use more compact routines
from fdt_support.h.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
---
 cpu/mpc83xx/cpu.c            |    4 +++
 drivers/usb/otg/fsl_dr_usb.c |   60 ++++++++++++++++++++++++-----------------
 2 files changed, 39 insertions(+), 25 deletions(-)

diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index 876f5c7..034958c 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -404,6 +404,10 @@ int cpu_mmc_init(bd_t *bis)
 #endif
 }
 
+#ifdef CONFIG_HWCONFIG
+const char *cpu_hwconfig = "dr_usb";
+#endif
+
 #ifdef CONFIG_BOOTCOUNT_LIMIT
 
 #if !defined(CONFIG_MPC8360)
diff --git a/drivers/usb/otg/fsl_dr_usb.c b/drivers/usb/otg/fsl_dr_usb.c
index af9797f..97584f8 100644
--- a/drivers/usb/otg/fsl_dr_usb.c
+++ b/drivers/usb/otg/fsl_dr_usb.c
@@ -10,43 +10,53 @@
  */
 
 #include <common.h>
-#include <libfdt.h>
+#include <malloc.h>
+#include <hwconfig.h>
+#include <fdt_support.h>
 
 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 {
-	char *mode;
-	char *type;
 	const char *compat = "fsl-usb2-dr";
-	const char *prop_mode = "dr_mode";
-	const char *prop_type = "phy_type";
-	int node_offset;
-	int err;
-
-	mode = getenv("usb_dr_mode");
-	type = getenv("usb_phy_type");
-	if (!mode && !type)
+	const char *mode;
+	const char *type;
+	size_t modelen = 0;
+	size_t typelen = 0;
+	char *buf;
+	size_t bufsz;
+
+	if (!hwconfig("dr_usb")) {
+		const char *reason = "disabled";
+
+		do_fixup_by_compat(blob, compat, "status", reason,
+				   strlen(reason) + 1, 1);
+		return;
+	}
+
+	mode = hwconfig_arg("dr_usb_mode", &modelen);
+	type = hwconfig_arg("dr_usb_phy_type", &typelen);
+	bufsz = max(modelen, typelen);
+	if (!bufsz)
 		return;
 
-	node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
-	if (node_offset < 0) {
-		printf("WARNING: could not find compatible node %s: %s.\n",
-			compat, fdt_strerror(node_offset));
+	buf = malloc(bufsz + 1);
+	if (!buf) {
+		printf("%s: unable to allocate memory\n", __func__);
 		return;
 	}
 
 	if (mode) {
-		err = fdt_setprop(blob, node_offset, prop_mode, mode,
-				  strlen(mode) + 1);
-		if (err < 0)
-			printf("WARNING: could not set %s for %s: %s.\n",
-			       prop_mode, compat, fdt_strerror(err));
+		strcpy(buf, mode);
+		buf[modelen] = '\0';
+		do_fixup_by_compat(blob, compat, "dr_mode", buf,
+				   modelen + 1, 1);
 	}
 
 	if (type) {
-		err = fdt_setprop(blob, node_offset, prop_type, type,
-				  strlen(type) + 1);
-		if (err < 0)
-			printf("WARNING: could not set %s for %s: %s.\n",
-			       prop_type, compat, fdt_strerror(err));
+		strcpy(buf, type);
+		buf[typelen] = '\0';
+		do_fixup_by_compat(blob, compat, "phy_type", buf,
+				   typelen + 1, 1);
 	}
+
+	free(buf);
 }
-- 
1.6.2.2