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authorNikhil Badola <nikhil.badola@freescale.com>2014-10-20 16:50:49 +0530
committerYork Sun <yorksun@freescale.com>2014-12-11 09:40:50 -0800
commita1c04e2785fe9843abcaeaa5d46f819215550d90 (patch)
tree3827212c7db2217f0d9c4e2a636bae92294f2b6f /drivers/usb
parentbca11bd7c31cb1f61dcbe727e0ff94c33c134b94 (diff)
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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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ehci-fsl.c113
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