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path: root/drivers/usb/host/ehci-hcd.c
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Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
-rw-r--r--drivers/usb/host/ehci-hcd.c69
1 files changed, 58 insertions, 11 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 3ff9f82f7263..e311a511529b 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -48,6 +48,10 @@
#include <asm/system.h>
#include <asm/unaligned.h>
+#if defined(CONFIG_PPC_PS3)
+#include <asm/firmware.h>
+#endif
+
/*-------------------------------------------------------------------------*/
/*
@@ -230,12 +234,58 @@ static int ehci_halt (struct ehci_hcd *ehci)
STS_HALT, STS_HALT, 16 * 125);
}
+#if defined(CONFIG_USB_SUSPEND) && defined(CONFIG_PPC_PS3)
+
+/*
+ * The EHCI controller of the Cell Super Companion Chip used in the
+ * PS3 will stop the root hub after all root hub ports are suspended.
+ * When in this condition handshake will return -ETIMEDOUT. The
+ * STS_HLT bit will not be set, so inspection of the frame index is
+ * used here to test for the condition. If the condition is found
+ * return success to allow the USB suspend to complete.
+ */
+
+static int handshake_for_broken_root_hub(struct ehci_hcd *ehci,
+ void __iomem *ptr, u32 mask, u32 done,
+ int usec)
+{
+ unsigned int old_index;
+ int error;
+
+ if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+ return -ETIMEDOUT;
+
+ old_index = ehci_read_frame_index(ehci);
+
+ error = handshake(ehci, ptr, mask, done, usec);
+
+ if (error == -ETIMEDOUT && ehci_read_frame_index(ehci) == old_index)
+ return 0;
+
+ return error;
+}
+
+#else
+
+static int handshake_for_broken_root_hub(struct ehci_hcd *ehci,
+ void __iomem *ptr, u32 mask, u32 done,
+ int usec)
+{
+ return -ETIMEDOUT;
+}
+
+#endif
+
static int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem *ptr,
u32 mask, u32 done, int usec)
{
int error;
error = handshake(ehci, ptr, mask, done, usec);
+ if (error == -ETIMEDOUT)
+ error = handshake_for_broken_root_hub(ehci, ptr, mask, done,
+ usec);
+
if (error) {
ehci_halt(ehci);
ehci->rh_state = EHCI_RH_HALTED;
@@ -620,6 +670,7 @@ static int ehci_init(struct usb_hcd *hcd)
hw = ehci->async->hw;
hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma);
hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD);
+ hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */
hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT);
hw->hw_qtd_next = EHCI_LIST_END(ehci);
ehci->async->qh_state = QH_STATE_LINKED;
@@ -677,22 +728,13 @@ static int ehci_init(struct usb_hcd *hcd)
static int ehci_run (struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci (hcd);
- int retval;
u32 temp;
u32 hcc_params;
hcd->uses_new_polling = 1;
/* EHCI spec section 4.1 */
- /*
- * TDI driver does the ehci_reset in their reset callback.
- * Don't reset here, because configuration settings will
- * vanish.
- */
- if (!ehci_is_TDI(ehci) && (retval = ehci_reset(ehci)) != 0) {
- ehci_mem_cleanup(ehci);
- return retval;
- }
+
ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next);
@@ -1324,11 +1366,16 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_pxa168_driver
#endif
-#ifdef CONFIG_NLM_XLR
+#ifdef CONFIG_CPU_XLR
#include "ehci-xls.c"
#define PLATFORM_DRIVER ehci_xls_driver
#endif
+#ifdef CONFIG_USB_EHCI_MV
+#include "ehci-mv.c"
+#define PLATFORM_DRIVER ehci_mv_driver
+#endif
+
#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
!defined(XILINX_OF_PLATFORM_DRIVER)