Some of multi-function USB controllers (e.g. ISP1562) allow root hub
resetting only via EHCI registers. So, this patch adds the corresponding
kind of reset to OHCI's hc_reset() if the newly introduced CONFIG_PCI_EHCI_DEVNO
option is set (e.g. for Socrates board).
Signed-off-by: Yuri Tikhonov <[EMAIL PROTECTED]>
---
Added to GNATS database as unassigned-patches/25
>Responsible: patch-coord
>Message-Id: <[EMAIL PROTECTED]>
>In-Reply-To: <[EMAIL PROTECTED]>
>References: <[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
>Patch-Date: Fri Aug 15 15:42:10 +0200 2008
---
drivers/usb/usb_ohci.c | 31 +++++++++++++++++++++++++++++++
drivers/usb/usb_ohci.h | 3 +++
include/configs/socrates.h | 1 +
3 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/usb_ohci.c b/drivers/usb/usb_ohci.c
index fd60edb..0f5bd06 100644
--- a/drivers/usb/usb_ohci.c
+++ b/drivers/usb/usb_ohci.c
@@ -1571,11 +1571,42 @@ int submit_int_msg(struct usb_device *dev, unsigned
long pipe, void *buffer,
static int hc_reset (ohci_t *ohci)
{
+#ifdef CONFIG_PCI_EHCI_DEVNO
+ pci_dev_t pdev;
+ struct pci_device_id ehci_pci_ids[] = {
+ {0x1131, 0x1562}, /* Philips 1562 PCI EHCI module ids */
+ {0, 0}
+ };
+#endif
int timeout = 30;
int smm_timeout = 50; /* 0,5 sec */
dbg("%s\n", __FUNCTION__);
+#ifdef CONFIG_PCI_EHCI_DEVNO
+ /*
+ * Some multi-function controllers (e.g. ISP1562) allow root hub
+ * resetting via EHCI registers only.
+ */
+ pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVNO);
+ if (pdev != -1) {
+ u32 base;
+ int timeout = 1000;
+
+ pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &base);
+ writel (readl(base + EHCI_USBCMD_OFF) | EHCI_USBCMD_HCRESET,
+ base + EHCI_USBCMD_OFF);
+
+ while (readl(base + EHCI_USBCMD_OFF) & EHCI_USBCMD_HCRESET) {
+ if (timeout-- <= 0) {
+ printf("USB RootHub reset timed out!");
+ break;
+ }
+ udelay(1);
+ }
+ } else
+ printf("No EHCI func at %d index!\n", CONFIG_PCI_EHCI_DEVNO);
+#endif
if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership
*/
info("USB HC TakeOver from SMM");
diff --git a/drivers/usb/usb_ohci.h b/drivers/usb/usb_ohci.h
index 380cb4c..7a04bf5 100644
--- a/drivers/usb/usb_ohci.h
+++ b/drivers/usb/usb_ohci.h
@@ -195,6 +195,9 @@ struct ohci_regs {
} roothub;
} __attribute((aligned(32)));
+/* Some EHCI controls */
+#define EHCI_USBCMD_OFF 0x20
+#define EHCI_USBCMD_HCRESET (1 << 1)
/* OHCI CONTROL AND STATUS REGISTER MASKS */
diff --git a/include/configs/socrates.h b/include/configs/socrates.h
index 8a64942..fdc1557 100644
--- a/include/configs/socrates.h
+++ b/include/configs/socrates.h
@@ -403,6 +403,7 @@
#define CONFIG_USB_OHCI_NEW 1
#define CONFIG_PCI_OHCI 1
#define CONFIG_PCI_OHCI_DEVNO 3 /* Number in PCI list */
+#define CONFIG_PCI_EHCI_DEVNO (CONFIG_PCI_OHCI_DEVNO / 2)
#define CFG_USB_OHCI_MAX_ROOT_PORTS 15
#define CFG_USB_OHCI_SLOT_NAME "ohci_pci"
#define CFG_OHCI_SWAP_REG_ACCESS 1
--
1.5.6.1
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