usb: xhci: fsl: code cleanup for device tree fixup for fsl usb controllers

Performs code cleanup for device tree fixup for fsl usb controllers by
making functions to handle these similar errata checking code.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>

drivers/usb/common/fsl-dt-fixup.c

@@ -19,10 +19,16 @@
 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
 #endif
 
+/* USB Controllers */
+#define FSL_USB2_MPH	"fsl-usb2-mph"
+#define FSL_USB2_DR	"fsl-usb2-dr"
+#define CHIPIDEA_USB2	"chipidea,usb2"
+#define SNPS_DWC3	"snps,dwc3"
+
 static const char * const compat_usb_fsl[] = {
-	"fsl-usb2-mph",
-	"fsl-usb2-dr",
-	"snps,dwc3",
+	FSL_USB2_MPH,
+	FSL_USB2_DR,
+	SNPS_DWC3,
 	NULL
 };
 
@@ -80,16 +86,24 @@ static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
 }
 
 static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum,
-				 int start_offset)
+				 const char *controller_type, int start_offset)
 {
 	int node_offset, err;
 	const char *node_type = NULL;
+	const char *node_name = NULL;
 
 	err = fdt_usb_get_node_type(blob, start_offset,
 				    &node_offset, &node_type);
 	if (err < 0)
 		return err;
 
+	if (!strcmp(node_type, FSL_USB2_MPH) || !strcmp(node_type, FSL_USB2_DR))
+		node_name = CHIPIDEA_USB2;
+	else
+		node_name = node_type;
+	if (strcmp(node_name, controller_type))
+		return err;
+
 	err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0);
 	if (err < 0) {
 		printf("ERROR: could not set %s for %s: %s.\n",
@@ -99,6 +113,23 @@ static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum,
 	return node_offset;
 }
 
+static int fdt_fixup_erratum(int *usb_erratum_off, void *blob,
+			     const char *controller_type, char *str,
+			     bool (*has_erratum)(void))
+{
+	char buf[32] = {0};
+
+	snprintf(buf, sizeof(buf), "fsl,usb-erratum-%s", str);
+	if (!has_erratum())
+		return -EINVAL;
+	*usb_erratum_off = fdt_fixup_usb_erratum(blob, buf, controller_type,
+						 *usb_erratum_off);
+	if (*usb_erratum_off < 0)
+		return -ENOSPC;
+	debug("Adding USB erratum %s\n", str);
+	return 0;
+}
+
 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 {
 	static const char * const modes[] = { "host", "peripheral", "otg" };
@@ -111,6 +142,7 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 	int usb_phy_off = -1;
 	char str[5];
 	int i, j;
+	int ret;
 
 	for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
 		const char *dr_mode_type = NULL;
@@ -164,39 +196,25 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 		if (usb_phy_off < 0)
 			return;
 
-		if (has_erratum_a006261()) {
-			usb_erratum_a006261_off =  fdt_fixup_usb_erratum
-						   (blob,
-						    "fsl,usb-erratum-a006261",
-						    usb_erratum_a006261_off);
-			if (usb_erratum_a006261_off < 0)
-				return;
-		}
-
-		if (has_erratum_a007075()) {
-			usb_erratum_a007075_off =  fdt_fixup_usb_erratum
-						   (blob,
-						    "fsl,usb-erratum-a007075",
-						    usb_erratum_a007075_off);
-			if (usb_erratum_a007075_off < 0)
-				return;
-		}
-
-		if (has_erratum_a007792()) {
-			usb_erratum_a007792_off =  fdt_fixup_usb_erratum
-						   (blob,
-						    "fsl,usb-erratum-a007792",
-						    usb_erratum_a007792_off);
-			if (usb_erratum_a007792_off < 0)
-				return;
-		}
-		if (has_erratum_a005697()) {
-			usb_erratum_a005697_off =  fdt_fixup_usb_erratum
-						   (blob,
-						    "fsl,usb-erratum-a005697",
-						    usb_erratum_a005697_off);
-			if (usb_erratum_a005697_off < 0)
-				return;
-		}
+		ret = fdt_fixup_erratum(&usb_erratum_a006261_off, blob,
+					CHIPIDEA_USB2, "a006261",
+					has_erratum_a006261);
+		if (ret == -ENOSPC)
+			return;
+		ret = fdt_fixup_erratum(&usb_erratum_a007075_off, blob,
+					CHIPIDEA_USB2, "a007075",
+					has_erratum_a007075);
+		if (ret == -ENOSPC)
+			return;
+		ret = fdt_fixup_erratum(&usb_erratum_a007792_off, blob,
+					CHIPIDEA_USB2, "a007792",
+					has_erratum_a007792);
+		if (ret == -ENOSPC)
+			return;
+		ret = fdt_fixup_erratum(&usb_erratum_a005697_off, blob,
+					CHIPIDEA_USB2, "a005697",
+					has_erratum_a005697);
+		if (ret == -ENOSPC)
+			return;
 	}
 }