[cgutman] 55848: [USBOHCI] - Implement per-port power control

Author: cgutman
Date: Sat Feb 25 02:20:15 2012
New Revision: 55848

URL: http://svn.reactos.org/svn/reactos?rev=55848&view=rev
Log:
[USBOHCI]
- Implement per-port power control

Modified:
    trunk/reactos/drivers/usb/usbohci/hardware.cpp
    trunk/reactos/drivers/usb/usbohci/hardware.h

Modified: trunk/reactos/drivers/usb/usbohci/hardware.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbohci/hardwar...
==============================================================================
--- trunk/reactos/drivers/usb/usbohci/hardware.cpp [iso-8859-1] (original)
+++ trunk/reactos/drivers/usb/usbohci/hardware.cpp [iso-8859-1] Sat Feb 25 02:20:15 2012
@@ -517,7 +517,7 @@
 NTSTATUS
 CUSBHardwareDevice::StartController(void)
 {
-    ULONG Control, Descriptor, FrameInterval, Periodic;
+    ULONG Control, Descriptor, FrameInterval, Periodic, Port;

//
     // lets write physical address of dummy control endpoint descriptor
@@ -530,7 +530,7 @@
     WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_BULK_HEAD_ED_OFFSET), m_BulkEndpointDescriptor->PhysicalAddress.LowPart);

//
-    // read descriptor
+    // read descriptor A
     //
     Descriptor = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_A_OFFSET));

@@ -552,18 +552,34 @@
     Descriptor &= ~OHCI_RH_NO_POWER_SWITCHING;

//
-    // control each port power independently (disabled until it's supported correctly)
-    //
-#if 0
+    // control each port power independently
+    //
     Descriptor |= OHCI_RH_POWER_SWITCHING_MODE;
-#else
-    Descriptor &= ~OHCI_RH_POWER_SWITCHING_MODE;
-#endif

//
     // write the configuration back
     //
+    DPRINT1("Descriptor A: %x\n", Descriptor);
     WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_A_OFFSET), Descriptor);
+
+    //
+    // read descriptor B
+    //
+    Descriptor = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_B_OFFSET));
+
+    //
+    // set power power control for each port to use PPS
+    //
+    for (Port = 1; Port <= m_NumberOfPorts; Port++)
+    {
+        Descriptor |= (1 << (16 + Port));
+    }
+
+    //
+    // write the configuration back
+    //
+    DPRINT1("Descriptor B: %x\n", Descriptor);
+    WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_B_OFFSET), Descriptor);

//
     // get frame interval
@@ -634,11 +650,6 @@
     ASSERT((Control & OHCI_HC_FUNCTIONAL_STATE_MASK) == OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL);
     ASSERT((Control & OHCI_ENABLE_LIST) == OHCI_ENABLE_LIST);
     DPRINT1("Control %x\n", Control);
-
-    //
-    // enable power on all ports
-    //
-    WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_STATUS_OFFSET), OHCI_RH_LOCAL_POWER_STATUS_CHANGE);

//
     // done

Modified: trunk/reactos/drivers/usb/usbohci/hardware.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbohci/hardwar...
==============================================================================
--- trunk/reactos/drivers/usb/usbohci/hardware.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/usb/usbohci/hardware.h [iso-8859-1] Sat Feb 25 02:20:15 2012
@@ -113,7 +113,7 @@
 //  Root Hub Descriptor B register (section 7.4.2)
 //

-#define OHCI_RH_DESCRIPTOR_B        0x4c
+#define OHCI_RH_DESCRIPTOR_B_OFFSET        0x4c

//
 //  Root Hub status register (section 7.4.3)