From: Ramneek Mehresh <ramneek.mehr...@freescale.com>
Modify support for USB mode fixup:
* Add support for fetching USB mode and phy type via hwconfig
* Add common support for USB mode and phy type device tree fix-up for all
USB controllers mentioned in hwconfig string
Signed-off-by: Ramneek Mehresh <ramneek.mehr...@freescale.com>
Signed-off-by: Kumar Gala <ga...@kernel.crashing.org>
---
arch/powerpc/cpu/mpc8xxx/fdt.c | 81 +++++++++++++++++++++++++++++++++-------
1 files changed, 67 insertions(+), 14 deletions(-)
diff --git a/arch/powerpc/cpu/mpc8xxx/fdt.c b/arch/powerpc/cpu/mpc8xxx/fdt.c
index 0c166fd..68f3e4e 100644
--- a/arch/powerpc/cpu/mpc8xxx/fdt.c
+++ b/arch/powerpc/cpu/mpc8xxx/fdt.c
@@ -29,6 +29,10 @@
#include <asm/mp.h>
#include <asm/fsl_enet.h>
#include <asm/fsl_serdes.h>
+#include <hwconfig.h>
+#ifdef CONFIG_HAS_FSL_DR_USB
+#include <usb.h>
+#endif
#if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
static int ft_del_cpuhandle(void *blob, int cpuhandle)
@@ -84,25 +88,22 @@ void ft_fixup_num_cores(void *blob) {
#endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
#ifdef CONFIG_HAS_FSL_DR_USB
-void fdt_fixup_dr_usb(void *blob, bd_t *bd)
+static void fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
+ const char *phy_type)
{
- char *mode;
- char *type;
const char *compat = "fsl-usb2-dr";
const char *prop_mode = "dr_mode";
const char *prop_type = "phy_type";
+ static int start_offset = -1;
int node_offset;
int err;
- mode = getenv("usb_dr_mode");
- type = getenv("usb_phy_type");
- if (!mode && !type)
- return;
-
- node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
+ node_offset = fdt_node_offset_by_compatible(blob,
+ start_offset, compat);
if (node_offset < 0) {
- printf("WARNING: could not find compatible node %s: %s.\n",
- compat, fdt_strerror(node_offset));
+ printf("WARNING: could not find compatible"
+ "node %s: %s.\n", compat,
+ fdt_strerror(node_offset));
return;
}
@@ -114,14 +115,66 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
prop_mode, compat, fdt_strerror(err));
}
- if (type) {
- err = fdt_setprop(blob, node_offset, prop_type, type,
- strlen(type) + 1);
+ 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, compat, fdt_strerror(err));
}
+
+ start_offset = node_offset;
}
+
+void fdt_fixup_dr_usb(void *blob, bd_t *bd)
+{
+ const char *modes[] = { "host", "peripheral", "otg" };
+ const char *phys[] = { "ulpi", "umti" };
+ const char *mode = NULL;
+ const char *phy_type = NULL;
+ char str[5];
+ char usb1_defined = 0;
+ int i, j;
+
+ for (i = 1; i <= USB_MAX_DEVICE; i++) {
+ int mode_idx = -1, phy_idx = -1;
+ sprintf(str, "%s%d", "usb", i);
+ if (hwconfig(str)) {
+ for (j = 0; j < sizeof(modes); j++) {
+ if (hwconfig_subarg_cmp(str, "dr_mode",
+ modes[j])) {
+ mode_idx = j;
+ break;
+ }
+ }
+ for (j = 0; j < sizeof(phys); j++) {
+ if (hwconfig_subarg_cmp(str, "phy_type",
+ phys[j])) {
+ phy_idx = -1;
+ break;
+ }
+ }
+ if ((mode_idx >= 0) || (phy_idx >= 0)) {
+ fdt_fixup_usb_mode_phy_type(blob,
+ modes[mode_idx], phys[phy_idx]);
+ if (!strcmp(str, "usb1"))
+ usb1_defined = 1;
+ } else {
+ printf("WARNING: invalid phy or mode\n");
+ }
+ } else {
+ break;
+ }
+ }
+ if (!usb1_defined) {
+ mode = getenv("usb_dr_mode");
+ phy_type = getenv("usb_phy_type");
+ if (!mode && !phy_type)
+ return;
+ fdt_fixup_usb_mode_phy_type(blob, mode, phy_type);
+ }
+}
+
#endif /* CONFIG_HAS_FSL_DR_USB */
/*
--
1.7.2.3
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