drivers: usb: Make usb device-tree fixup code architecture independent

move usb device tree fixup code from "arch/powerpc/" to "drivers/usb/"
so that it works independent of architecture it is running on

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 8f55464..54efe5e 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -15,9 +15,14 @@
 #include <usb/ehci-fsl.h>
 #include <hwconfig.h>
 #include <fsl_usb.h>
+#include <fdt_support.h>
 
 #include "ehci.h"
 
+#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
+#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
+#endif
+
 static void set_txfifothresh(struct usb_ehci *, u32);
 
 /* Check USB PHY clock valid */
@@ -158,3 +163,111 @@ static void set_txfifothresh(struct usb_ehci *ehci, u32 txfifo_thresh)
 	cmd |= TXFIFO_THRESH(txfifo_thresh);
 	ehci_writel(&ehci->txfilltuning, cmd);
 }
+
+#if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
+static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
+				       const char *phy_type, int start_offset)
+{
+	const char *compat_dr = "fsl-usb2-dr";
+	const char *compat_mph = "fsl-usb2-mph";
+	const char *prop_mode = "dr_mode";
+	const char *prop_type = "phy_type";
+	const char *node_type = NULL;
+	int node_offset;
+	int err;
+
+	node_offset = fdt_node_offset_by_compatible(blob,
+						    start_offset, compat_mph);
+	if (node_offset < 0) {
+		node_offset = fdt_node_offset_by_compatible(blob,
+							    start_offset,
+							    compat_dr);
+		if (node_offset < 0) {
+			printf("WARNING: could not find compatible node: %s",
+			       fdt_strerror(node_offset));
+			return -1;
+		}
+		node_type = compat_dr;
+	} else {
+		node_type = compat_mph;
+	}
+
+	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, node_type, fdt_strerror(err));
+	}
+
+	if (phy_type) {
+		err = fdt_setprop(blob, node_offset, prop_type, phy_type,
+				  strlen(phy_type) + 1);
+		if (err < 0)
+			printf("WARNING: could not set %s for %s: %s.\n",
+			       prop_type, node_type, fdt_strerror(err));
+	}
+
+	return node_offset;
+}
+
+void fdt_fixup_dr_usb(void *blob, bd_t *bd)
+{
+	static const char * const modes[] = { "host", "peripheral", "otg" };
+	static const char * const phys[] = { "ulpi", "utmi" };
+	int usb_mode_off = -1;
+	int usb_phy_off = -1;
+	char str[5];
+	int i, j;
+
+	for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
+		const char *dr_mode_type = NULL;
+		const char *dr_phy_type = NULL;
+		int mode_idx = -1, phy_idx = -1;
+
+		snprintf(str, 5, "%s%d", "usb", i);
+		if (hwconfig(str)) {
+			for (j = 0; j < ARRAY_SIZE(modes); j++) {
+				if (hwconfig_subarg_cmp(str, "dr_mode",
+							modes[j])) {
+					mode_idx = j;
+					break;
+				}
+			}
+
+			for (j = 0; j < ARRAY_SIZE(phys); j++) {
+				if (hwconfig_subarg_cmp(str, "phy_type",
+							phys[j])) {
+					phy_idx = j;
+					break;
+				}
+			}
+
+			if (mode_idx < 0 && phy_idx < 0) {
+				printf("WARNING: invalid phy or mode\n");
+				return;
+			}
+
+			if (mode_idx > -1)
+				dr_mode_type = modes[mode_idx];
+
+			if (phy_idx > -1)
+				dr_phy_type = phys[phy_idx];
+		}
+
+		usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
+							   dr_mode_type, NULL,
+							   usb_mode_off);
+
+		if (usb_mode_off < 0)
+			return;
+
+		usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
+							  NULL, dr_phy_type,
+							  usb_phy_off);
+
+		if (usb_phy_off < 0)
+			return;
+	}
+}
+#endif