circle_patch.diff

diff --git a/addon/fatfs/ff.c b/addon/fatfs/ff.c
index 750eee1..8a156fa 100644
--- a/addon/fatfs/ff.c
+++ b/addon/fatfs/ff.c
@@ -224,6 +224,9 @@
 #if FF_MULTI_PARTITION
 #define LD2PD(vol) VolToPart[vol].pd	/* Get physical drive number */
 #define LD2PT(vol) VolToPart[vol].pt	/* Get partition index */
+// BEGIN BCM64 Patch
+#define LD2SS(vol) VolToPart[vol].ss	/* Get start sector */
+// END BCM64 Patch
 #else
 #define LD2PD(vol) (BYTE)(vol)	/* Each logical drive is bound to the same physical drive number */
 #define LD2PT(vol) 0			/* Find first valid partition or in SFD */
@@ -3275,12 +3278,26 @@ static FRESULT find_volume (	/* FR_OK(0): successful, !=0: an error occurred */
 			pt = fs->win + (MBR_Table + i * SZ_PTE);
 			br[i] = pt[PTE_System] ? ld_dword(pt + PTE_StLba) : 0;
 		}
-		i = LD2PT(vol);					/* Partition number: 0:auto, 1-4:forced */
+		i = LD2PT(vol);					/* Partition number: 0:auto, 1-4:forced, 5:forced start sector */
+// BEGIN BMC64 Patch
+#if FF_MULTI_PARTITION
+if (i == 5) {
+			// Forced start sector
+			bsect = LD2SS(vol);
+			fmt = bsect ? check_fs(fs, bsect) : 3;
+} else {
+// END BMC64 Patch
+#endif
 		if (i != 0) i--;
 		do {							/* Find an FAT volume */
 			bsect = br[i];
 			fmt = bsect ? check_fs(fs, bsect) : 3;	/* Check the partition */
 		} while (LD2PT(vol) == 0 && fmt >= 2 && ++i < 4);
+// BEGIN BMC64 Patch
+#if FF_MULTI_PARTITION
+}
+#endif
+// END BMC64 Patch
 	}
 	if (fmt == 4) return FR_DISK_ERR;		/* An error occured in the disk I/O layer */
 	if (fmt >= 2) return FR_NO_FILESYSTEM;	/* No FAT volume is found */
diff --git a/addon/fatfs/ff.h b/addon/fatfs/ff.h
index b3d75a9..8990c01 100644
--- a/addon/fatfs/ff.h
+++ b/addon/fatfs/ff.h
@@ -63,7 +63,10 @@ typedef unsigned long	DWORD;	/* 32-bit unsigned integer */
 #if FF_MULTI_PARTITION		/* Multiple partition configuration */
 typedef struct {
 	BYTE pd;	/* Physical drive number */
-	BYTE pt;	/* Partition: 0:Auto detect, 1-4:Forced partition) */
+// BEGIN BMC64 Patch
+	BYTE pt;	/* Partition: 0:Auto detect, 1-4:Forced partition, 5:Forced start sector, use ss) */
+	DWORD ss;	/* Forced start sector if pt==5 */
+// END BMC64 Patch
 } PARTITION;
 extern PARTITION VolToPart[];	/* Volume - Partition resolution table */
 #endif
diff --git a/addon/fatfs/ffconf.h b/addon/fatfs/ffconf.h
index eae1896..bbf174a 100644
--- a/addon/fatfs/ffconf.h
+++ b/addon/fatfs/ffconf.h
@@ -181,7 +181,7 @@
 */
 
 
-#define FF_MULTI_PARTITION	0
+#define FF_MULTI_PARTITION	1
 /* This option switches support for multiple volumes on the physical drive.
 /  By default (0), each logical drive number is bound to the same physical drive
 /  number and only an FAT volume found on the physical drive will be mounted.
diff --git a/addon/linux/bug.h b/addon/linux/bug.h
index 6b80534..0e3e97a 100644
--- a/addon/linux/bug.h
+++ b/addon/linux/bug.h
@@ -9,7 +9,7 @@
 extern "C" {
 #endif
 
-#define BUG_ON(exp)	assert (!(exp))
+#define BUG_ON(exp)	;
 #define BUG()		assert (0)
 
 void __warn (const char *file, const int line);
diff --git a/addon/linux/types.h b/addon/linux/types.h
index f5068b4..9fed785 100644
--- a/addon/linux/types.h
+++ b/addon/linux/types.h
@@ -4,7 +4,8 @@
 #include <circle/types.h>
 #include <stdint.h>
 
-typedef unsigned long	loff_t;
+// BMC64 - Why is this defined twice in our build?
+//typedef unsigned long	loff_t;
 typedef int		gfp_t;
 typedef uintptr		dma_addr_t;
 
diff --git a/addon/vc4/interface/bcm_host/bcm_host.c b/addon/vc4/interface/bcm_host/bcm_host.c
index 7b5c415..81d122f 100644
--- a/addon/vc4/interface/bcm_host/bcm_host.c
+++ b/addon/vc4/interface/bcm_host/bcm_host.c
@@ -178,3 +178,14 @@ unsigned bcm_host_get_sdram_address(void)
 }
 
 #endif
+
+void bcm_get_sclker(char* buffer, int size) {
+   if (vc_gencmd (buffer, size, "scaling_kernel") != 0 )
+      printk("Failed to restore scaling kernel");
+}
+
+void bcm_set_sclker(const char* buffer) {
+   char tmp[1024];
+   if (vc_gencmd (tmp, sizeof(tmp), buffer) != 0 )
+      printk("Failed to set scaling kernel");
+}
diff --git a/addon/vc4/interface/bcm_host/bcm_host.h b/addon/vc4/interface/bcm_host/bcm_host.h
index cd601a1..89aac5d 100644
--- a/addon/vc4/interface/bcm_host/bcm_host.h
+++ b/addon/vc4/interface/bcm_host/bcm_host.h
@@ -38,6 +38,8 @@ extern "C" {
 
 void bcm_host_init(void);
 void bcm_host_deinit(void);
+void bcm_get_sclker(char* buffer, int size);
+void bcm_set_sclker(const char* buffer);
 
 int32_t graphics_get_display_size( const uint16_t display_number,
                                                     uint32_t *width,
diff --git a/addon/vc4/interface/khronos/common/khrn_int_common.h b/addon/vc4/interface/khronos/common/khrn_int_common.h
index f8c1d59..487da4b 100644
--- a/addon/vc4/interface/khronos/common/khrn_int_common.h
+++ b/addon/vc4/interface/khronos/common/khrn_int_common.h
@@ -139,7 +139,8 @@ extern "C" {
 #endif
 
 #include "interface/vcos/vcos_assert.h"
-#include <string.h> /* size_t */
+// BMC64 - Why does this cause the compiler to choke?
+//#include <string.h> /* size_t */
 
 #ifdef _MSC_VER
 #define INLINE __inline
diff --git a/addon/vc4/interface/vmcs_host/vc_vchi_gencmd.c b/addon/vc4/interface/vmcs_host/vc_vchi_gencmd.c
index d4a142e..6c6284e 100644
--- a/addon/vc4/interface/vmcs_host/vc_vchi_gencmd.c
+++ b/addon/vc4/interface/vmcs_host/vc_vchi_gencmd.c
@@ -59,7 +59,7 @@ extern const char *gencmd_get_build_version(void);
 /******************************************************************************
 Local types and defines.
 ******************************************************************************/
-#define GENCMD_MAX_LENGTH 512
+#define GENCMD_MAX_LENGTH 511
 typedef struct {
    VCHI_SERVICE_HANDLE_T open_handle[VCHI_MAX_NUM_CONNECTIONS];
    uint32_t              msg_flag[VCHI_MAX_NUM_CONNECTIONS];
diff --git a/addon/vc4/vchiq/vchiq_2835_arm.c b/addon/vc4/vchiq/vchiq_2835_arm.c
index 4d716ff..79343b5 100644
--- a/addon/vc4/vchiq/vchiq_2835_arm.c
+++ b/addon/vc4/vchiq/vchiq_2835_arm.c
@@ -508,6 +508,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type,
 
 	/* Group the pages into runs of contiguous pages */
 
+#if RASPPI <= 3
 	base_addr = VCHIQ_ARM_ADDRESS(page_address(pages[0]));
 	next_addr = base_addr + PAGE_SIZE;
 	addridx = 0;
@@ -529,6 +530,31 @@ create_pagelist(char __user *buf, size_t count, unsigned short type,
 
 	addrs[addridx] = (unsigned int)(uintptr_t)base_addr + run;
 	addridx++;
+#else
+	base_addr = page_address(pages[0]);
+	next_addr = base_addr + PAGE_SIZE;
+	addridx = 0;
+	run = 0;
+
+	for (i = 1; i < num_pages; i++) {
+		addr = page_address(pages[i]);
+		if ((addr == next_addr) && (run < 255)) {
+			next_addr += PAGE_SIZE;
+			run++;
+		} else {
+			BUG_ON (((uintptr_t)base_addr & 0xFFF) != 0);
+			addrs[addridx] = (unsigned int)((uintptr_t)base_addr >> 4) + run;
+			addridx++;
+			base_addr = addr;
+			next_addr = addr + PAGE_SIZE;
+			run = 0;
+		}
+	}
+
+	BUG_ON (((uintptr_t)base_addr & 0xFFF) != 0);
+	addrs[addridx] = (unsigned int)((uintptr_t)base_addr >> 4) + run;
+	addridx++;
+#endif
 
 #ifndef __circle__
 	/* Partial cache lines (fragments) require special measures */
diff --git a/include/circle/machineinfo.h b/include/circle/machineinfo.h
index 922c700..8f9714d 100644
--- a/include/circle/machineinfo.h
+++ b/include/circle/machineinfo.h
@@ -35,6 +35,7 @@ enum TMachineModel
 	MachineModelBPlus,
 	MachineModelZero,
 	MachineModelZeroW,
+        MachineModelZero2W,
 	MachineModel2B,
 	MachineModel3B,
 	MachineModel3APlus,
diff --git a/include/circle/memorymap.h b/include/circle/memorymap.h
index 3fe23ed..e934688 100644
--- a/include/circle/memorymap.h
+++ b/include/circle/memorymap.h
@@ -33,7 +33,7 @@
 	#define GIGABYTE	0x40000000ULL
 #endif
 
-#define MEM_SIZE		(256 * MEGABYTE)		// default size
+#define MEM_SIZE		(512 * MEGABYTE)		// default size
 #define GPU_MEM_SIZE		(64 * MEGABYTE)			// set in config.txt
 #define ARM_MEM_SIZE		(MEM_SIZE - GPU_MEM_SIZE)	// normally overwritten
 
diff --git a/include/circle/sysconfig.h b/include/circle/sysconfig.h
index 2ef7052..c45440e 100644
--- a/include/circle/sysconfig.h
+++ b/include/circle/sysconfig.h
@@ -34,7 +34,7 @@
 // If your kernel image contains big data areas it may be required to
 // increase this value. The value must be a multiple of 16 KByte.
 
-#define KERNEL_MAX_SIZE		(2 * MEGABYTE)
+#define KERNEL_MAX_SIZE		(32 * MEGABYTE)
 
 ///////////////////////////////////////////////////////////////////////
 //
@@ -88,7 +88,7 @@
 // single core applications, because this may slow down the system
 // because multiple cores may compete for bus time without use.
 
-//#define ARM_ALLOW_MULTI_CORE
+#define ARM_ALLOW_MULTI_CORE
 
 #endif
 
@@ -126,7 +126,7 @@
 // compatibility with existing applications it is not set by default.
 // This option has no influence on the Raspberry Pi 4.
 
-//#define USE_USB_SOF_INTR
+#define USE_USB_SOF_INTR
 
 #endif
 
@@ -144,7 +144,7 @@
 // this option is that the "SpeedFactor" of your system is displayed.
 // You can reduce the time needed for booting, if you disable this.
 
-#define CALIBRATE_DELAY
+//#define CALIBRATE_DELAY
 
 ///////////////////////////////////////////////////////////////////////
 //
@@ -170,12 +170,12 @@
 // The default keyboard map can be overwritten in with the keymap=
 // option in cmdline.txt.
 
-#define DEFAULT_KEYMAP		"DE"
+//#define DEFAULT_KEYMAP		"DE"
 //#define DEFAULT_KEYMAP		"ES"
 //#define DEFAULT_KEYMAP		"FR"
 //#define DEFAULT_KEYMAP		"IT"
 //#define DEFAULT_KEYMAP		"UK"
-//#define DEFAULT_KEYMAP		"US"
+#define DEFAULT_KEYMAP		"US"
 
 ///////////////////////////////////////////////////////////////////////
 //
diff --git a/include/circle/usb/usbgamepad.h b/include/circle/usb/usbgamepad.h
index 9c6e943..fab9ffb 100644
--- a/include/circle/usb/usbgamepad.h
+++ b/include/circle/usb/usbgamepad.h
@@ -2,7 +2,7 @@
 // usbgamepad.h
 //
 // Circle - A C++ bare metal environment for Raspberry Pi
-// Copyright (C) 2014-2018  R. Stange <rsta2@o2online.de>
+// Copyright (C) 2014-2021  R. Stange <rsta2@o2online.de>
 //
 // Ported from the USPi driver which is:
 // 	Copyright (C) 2014  M. Maccaferri <macca@maccasoft.com>
@@ -85,6 +85,11 @@ enum TGamePadButton		// Digital button (bit masks)
 	GamePadButtonTouchpad	= BIT(21)		// optional
 };
 
+// Number of digital buttons for known gamepads:
+#define GAMEPAD_BUTTONS_STANDARD      19
+#define GAMEPAD_BUTTONS_ALTERNATIVE   21
+#define GAMEPAD_BUTTONS_WITH_TOUCHPAD 22
+
 enum TGamePadAxis		// Axis or analog button
 {
 	GamePadAxisLeftX,
diff --git a/include/circle/usb/usbhiddevice.h b/include/circle/usb/usbhiddevice.h
index 4e7f682..c8173b7 100644
--- a/include/circle/usb/usbhiddevice.h
+++ b/include/circle/usb/usbhiddevice.h
@@ -25,12 +25,15 @@
 #include <circle/usb/usbrequest.h>
 #include <circle/usb/usbhostcontroller.h>
 #include <circle/types.h>
+//#ifdef BMC64_REPORT_THROTTLE
+//#include <circle/timer.h>
+//#endif
 
 class CUSBHIDDevice : public CUSBFunction
 {
 public:
 	// nMaxReportSize can be handed-over here or to Configure()
-	CUSBHIDDevice (CUSBFunction *pFunction, unsigned nMaxReportSize = 0);
+	CUSBHIDDevice (CUSBFunction *pFunction, unsigned nMaxReportSize = 0, bool bThrottleReports = false);
 	~CUSBHIDDevice (void);
 
 	boolean Configure (unsigned nMaxReportSize = 0);
@@ -68,6 +71,10 @@ private:
 	CUSBRequest *m_pURB;
 
 	u8 *m_pReportBuffer;
+
+	bool m_bThrottleReports;
+        CTimer* pTimer;
+        unsigned long nTimerStart;
 };
 
 #endif
diff --git a/lib/alloc.cpp b/lib/alloc.cpp
index eb6fe49..f6e0776 100644
--- a/lib/alloc.cpp
+++ b/lib/alloc.cpp
@@ -76,7 +76,7 @@ static unsigned       s_nBlockReserve = 0x40000;
 static unsigned char *s_pNextPage;
 static unsigned char *s_pPageLimit;
 
-static TBlockBucket s_BlockBucket[] = {{0x40}, {0x400}, {0x1000}, {0x4000}, {0x10000}, {0x40000}, {0x80000}, {0}};
+static TBlockBucket s_BlockBucket[] = {{0x40}, {0x400}, {0x1000}, {0x4000}, {0x10000}, {0x40000}, {0x80000}, {0x100000}, {0x200000}, {0x400000}, {0x800000}, {0x1000000}, {0x1800000}, {0}};
 
 static TPageBucket s_PageBucket;
 
diff --git a/lib/machineinfo.cpp b/lib/machineinfo.cpp
index c2a7068..d2ccdd6 100644
--- a/lib/machineinfo.cpp
+++ b/lib/machineinfo.cpp
@@ -71,7 +71,8 @@ s_NewInfo[]
 	{13, MachineModel3BPlus,	3},
 	{14, MachineModel3APlus,	3},
 	{16, MachineModelCM3Plus,	3},
-	{17, MachineModel4B,		4}
+	{17, MachineModel4B,		4},
+	{18, MachineModelZero2W,	3},
 };
 
 static const char *s_MachineName[] =		// must match TMachineModel
@@ -84,6 +85,7 @@ static const char *s_MachineName[] =		// must match TMachineModel
 	"Raspberry Pi Model B+",
 	"Raspberry Pi Zero",
 	"Raspberry Pi Zero W",
+        "Raspberry Pi Zero 2 W",
 	"Raspberry Pi 2 Model B",
 	"Raspberry Pi 3 Model B",
 	"Raspberry Pi 3 Model A+",
@@ -114,6 +116,7 @@ static unsigned s_ActLEDInfo[] =		// must match TMachineModel
 	47,				// B+
 	47 | ACTLED_ACTIVE_LOW,		// Zero
 	47 | ACTLED_ACTIVE_LOW,		// Zero W
+        29 | ACTLED_ACTIVE_LOW,         // Zero 2 W
 	47,				// 2B
 	0 | ACTLED_VIRTUAL_PIN,		// 3B
 	29,				// 3A+
diff --git a/lib/sysinit.cpp b/lib/sysinit.cpp
index 3c96caf..e9e4127 100644
--- a/lib/sysinit.cpp
+++ b/lib/sysinit.cpp
@@ -180,12 +180,15 @@ void sysinit (void)
 #endif
 
 	// clear BSS
-	extern unsigned char __bss_start;
-	extern unsigned char _end;
-	for (unsigned char *pBSS = &__bss_start; pBSS < &_end; pBSS++)
-	{
-		*pBSS = 0;
-	}
+        asm(
+        "ldr    r1,     =__bss_start\n\t"
+        "ldr    r2,     =_end\n\t"
+        "mov    r3,     #0x00\n\t"
+         "_clear_bss:\n\t"
+        "cmp    r1,r2\n\t"
+        "strne  r3,[r1],#+4\n\t"
+        "bne    _clear_bss\n\t"
+        );
 
 	CMachineInfo MachineInfo;
 
diff --git a/lib/usb/usbgamepad.cpp b/lib/usb/usbgamepad.cpp
index ff011e8..c6a0e8f 100644
--- a/lib/usb/usbgamepad.cpp
+++ b/lib/usb/usbgamepad.cpp
@@ -32,8 +32,14 @@ unsigned CUSBGamePadDevice::s_nDeviceNumber = 1;
 static const char FromUSBPad[] = "usbpad";
 static const char DevicePrefix[] = "upad";
 
+#ifdef BMC64_REPORT_THROTTLE
+#define THROTTLE_FLAG true
+#else
+#define THROTTLE_FLAG false
+#endif
+
 CUSBGamePadDevice::CUSBGamePadDevice (CUSBFunction *pFunction)
-:	CUSBHIDDevice (pFunction),
+:	CUSBHIDDevice (pFunction, 0, THROTTLE_FLAG),
 	m_pStatusHandler (0),
 	m_usReportSize (0),
 	m_nDeviceNumber (0)	// not assigned
diff --git a/lib/usb/usbgamepadps3.cpp b/lib/usb/usbgamepadps3.cpp
index 809df13..696632e 100644
--- a/lib/usb/usbgamepadps3.cpp
+++ b/lib/usb/usbgamepadps3.cpp
@@ -2,7 +2,7 @@
 // usbgamepadps3.cpp
 //
 // Circle - A C++ bare metal environment for Raspberry Pi
-// Copyright (C) 2014-2019  R. Stange <rsta2@o2online.de>
+// Copyright (C) 2014-2021  R. Stange <rsta2@o2online.de>
 //
 // Information to implement this was taken from:
 //	https://github.com/felis/USB_Host_Shield_2.0/blob/master/PS3USB.cpp
@@ -108,7 +108,7 @@ boolean CUSBGamePadPS3Device::Configure (void)
 		return FALSE;
 	}
 
-	m_State.nbuttons = REPORT_BUTTONS;
+	m_State.nbuttons = GAMEPAD_BUTTONS_STANDARD;
 	m_State.naxes = REPORT_AXES+REPORT_ANALOG_BUTTONS;
 	for (unsigned i = 0; i < REPORT_AXES+REPORT_ANALOG_BUTTONS; i++)
 	{
diff --git a/lib/usb/usbgamepadps4.cpp b/lib/usb/usbgamepadps4.cpp
index 0455698..2f2e6df 100644
--- a/lib/usb/usbgamepadps4.cpp
+++ b/lib/usb/usbgamepadps4.cpp
@@ -2,7 +2,7 @@
 // usbgamepadps4.cpp
 //
 // Circle - A C++ bare metal environment for Raspberry Pi
-// Copyright (C) 2014-2018  R. Stange <rsta2@o2online.de>
+// Copyright (C) 2014-2021  R. Stange <rsta2@o2online.de>
 //
 // This driver was developed by:
 //	Jose Luis Sanchez, http://jspeccy.speccy.org/
@@ -163,7 +163,7 @@ boolean CUSBGamePadPS4Device::Configure (void)
 		assert (m_pMouseDevice != 0);
 	}
 
-	m_State.nbuttons = REPORT_BUTTONS;
+	m_State.nbuttons = GAMEPAD_BUTTONS_WITH_TOUCHPAD;
 	m_State.nhats = REPORT_HATS;
 	m_State.naxes = REPORT_AXIS + REPORT_ANALOG_BUTTONS;
 	for (int axis = 0; axis < REPORT_AXIS + REPORT_ANALOG_BUTTONS; axis++) {
diff --git a/lib/usb/usbgamepadswitchpro.cpp b/lib/usb/usbgamepadswitchpro.cpp
index 2b2968d..0d714a2 100644
--- a/lib/usb/usbgamepadswitchpro.cpp
+++ b/lib/usb/usbgamepadswitchpro.cpp
@@ -2,7 +2,7 @@
 // usbgamepadswitchpro.cpp
 //
 // Circle - A C++ bare metal environment for Raspberry Pi
-// Copyright (C) 2014-2019  R. Stange <rsta2@o2online.de>
+// Copyright (C) 2014-2021  R. Stange <rsta2@o2online.de>
 //
 // This driver was developed by:
 //	Jose Luis Sanchez, jspeccy@gmail.com, jsanchezv@github.com
@@ -112,7 +112,7 @@ boolean CUSBGamePadSwitchProDevice::Configure (void)
 		return FALSE;
 	}
 
-	m_State.nbuttons = REPORT_BUTTONS;
+	m_State.nbuttons = GAMEPAD_BUTTONS_ALTERNATIVE;
 	m_State.nhats = REPORT_HATS;
 	m_State.naxes = REPORT_AXIS + REPORT_ANALOG_BUTTONS;
 	for (int axis = 0; axis < REPORT_AXIS + REPORT_ANALOG_BUTTONS; axis++) {
diff --git a/lib/usb/usbgamepadxbox360.cpp b/lib/usb/usbgamepadxbox360.cpp
index 71b0af5..c9a0013 100644
--- a/lib/usb/usbgamepadxbox360.cpp
+++ b/lib/usb/usbgamepadxbox360.cpp
@@ -2,7 +2,7 @@
 // usbgamepadxbox360.cpp
 //
 // Circle - A C++ bare metal environment for Raspberry Pi
-// Copyright (C) 2018  R. Stange <rsta2@o2online.de>
+// Copyright (C) 2018-2021  R. Stange <rsta2@o2online.de>
 //
 // Information to implement this was taken from:
 //	https://github.com/felis/USB_Host_Shield_2.0/blob/master/XBOXUSB.cpp
@@ -36,7 +36,7 @@ struct TXbox360Report
 #define REPORT_HEADER			0x1400
 
 	u16	Buttons;
-#define REPORT_BUTTONS			16
+#define REPORT_BUTTONS			17
 
 #define REPORT_ANALOG_BUTTONS		2
 	u8	AnalogButton[REPORT_ANALOG_BUTTONS];
@@ -75,7 +75,7 @@ boolean CUSBGamePadXbox360Device::Configure (void)
 		return FALSE;
 	}
 
-	m_State.nbuttons = REPORT_BUTTONS+REPORT_ANALOG_BUTTONS;
+	m_State.nbuttons = GAMEPAD_BUTTONS_STANDARD;
 	m_State.naxes = REPORT_AXES+REPORT_ANALOG_BUTTONS;
 	for (unsigned i = 0; i < REPORT_AXES; i++)
 	{
diff --git a/lib/usb/usbgamepadxboxone.cpp b/lib/usb/usbgamepadxboxone.cpp
index ee59519..7cf69db 100644
--- a/lib/usb/usbgamepadxboxone.cpp
+++ b/lib/usb/usbgamepadxboxone.cpp
@@ -2,7 +2,7 @@
 // usbgamepadxboxone.cpp
 //
 // Circle - A C++ bare metal environment for Raspberry Pi
-// Copyright (C) 2018  R. Stange <rsta2@o2online.de>
+// Copyright (C) 2018-2021  R. Stange <rsta2@o2online.de>
 //
 // This driver was developed by:
 //	Jose Luis Sanchez, jspeccy@gmail.com, jsanchezv@github.com
@@ -102,7 +102,7 @@ boolean CUSBGamePadXboxOneDevice::Configure (void)
 		return FALSE;
 	}
 
-	m_State.nbuttons = REPORT_BUTTONS+REPORT_ANALOG_BUTTONS;
+	m_State.nbuttons = GAMEPAD_BUTTONS_STANDARD;
 	m_State.naxes = REPORT_AXES+REPORT_ANALOG_BUTTONS;
 	for (unsigned i = 0; i < REPORT_AXES; i++)
 	{
diff --git a/lib/usb/usbhiddevice.cpp b/lib/usb/usbhiddevice.cpp
index 2893a86..9aac786 100644
--- a/lib/usb/usbhiddevice.cpp
+++ b/lib/usb/usbhiddevice.cpp
@@ -25,19 +25,23 @@
 
 static const char FromUSBHID[] = "usbhid";
 
-CUSBHIDDevice::CUSBHIDDevice (CUSBFunction *pFunction, unsigned nMaxReportSize)
+CUSBHIDDevice::CUSBHIDDevice (CUSBFunction *pFunction, unsigned nMaxReportSize, bool bThrottleReports)
 :	CUSBFunction (pFunction),
 	m_nMaxReportSize (nMaxReportSize),
 	m_pReportEndpoint (0),
 	m_pEndpointOut (0),
 	m_pURB (0),
-	m_pReportBuffer (0)
+	m_pReportBuffer (0),
+        m_bThrottleReports (bThrottleReports)
 {
 	if (m_nMaxReportSize > 0)
 	{
 		m_pReportBuffer = new u8[m_nMaxReportSize];
 		assert (m_pReportBuffer != 0);
 	}
+
+        pTimer = CTimer::Get();
+        nTimerStart = pTimer->GetClockTicks();
 }
 
 CUSBHIDDevice::~CUSBHIDDevice (void)
@@ -214,14 +218,18 @@ void CUSBHIDDevice::CompletionRoutine (CUSBRequest *pURB)
 	assert (pURB != 0);
 	assert (m_pURB == pURB);
 
-	if (pURB->GetStatus () != 0)
-	{
+        if (!m_bThrottleReports || (pTimer->GetClockTicks() - nTimerStart >= 20000L)) {
+           nTimerStart = pTimer->GetClockTicks();
+
+	  if (pURB->GetStatus () != 0)
+	  {
 		ReportHandler (m_pReportBuffer, pURB->GetResultLength ());
-	}
-	else
-	{
+	  }
+	  else
+	  {
 		ReportHandler (0, 0);
-	}
+	  }
+        }
 
 	delete m_pURB;
 	m_pURB = 0;