Merge branches 'at91', 'ep93xx', 'etm', 'ks8695', 'nuc', 'u300' and 'u8500' into devel

MAINTAINERS

@@ -923,6 +923,12 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 W:	http://www.mcuos.com
 S:	Maintained
 
+ARM/U8500 ARM ARCHITECTURE
+M:	Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S:	Maintained
+F:	arch/arm/mach-ux500/
+
 ARM/VFP SUPPORT
 M:	Russell King <linux@arm.linux.org.uk>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)

arch/arm/Kconfig

@@ -702,6 +702,16 @@ config ARCH_BCMRING
 	help
 	  Support for Broadcom's BCMRing platform.
 
+config ARCH_U8500
+	bool "ST-Ericsson U8500 Series"
+	select CPU_V7
+	select ARM_AMBA
+	select GENERIC_TIME
+	select GENERIC_CLOCKEVENTS
+	select COMMON_CLKDEV
+	help
+	  Support for ST-Ericsson's Ux500 architecture
+
 endchoice
 
 source "arch/arm/mach-clps711x/Kconfig"
@@ -787,6 +797,7 @@ source "arch/arm/mach-at91/Kconfig"
 source "arch/arm/plat-mxc/Kconfig"
 
 source "arch/arm/mach-nomadik/Kconfig"
+source "arch/arm/plat-nomadik/Kconfig"
 
 source "arch/arm/mach-netx/Kconfig"
 
@@ -804,6 +815,8 @@ source "arch/arm/mach-w90x900/Kconfig"
 
 source "arch/arm/mach-bcmring/Kconfig"
 
+source "arch/arm/mach-ux500/Kconfig"
+
 # Definitions to make life easier
 config ARCH_ACORN
 	bool
@@ -955,10 +968,10 @@ source "kernel/time/Kconfig"
 config SMP
 	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 	depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
-		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
+		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
 	depends on GENERIC_CLOCKEVENTS
 	select USE_GENERIC_SMP_HELPERS
-	select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
+	select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
 	help
 	  This enables support for systems with more than one CPU. If you have
 	  a system with only one CPU, like most personal computers, say N. If
@@ -1027,9 +1040,9 @@ config HOTPLUG_CPU
 config LOCAL_TIMERS
 	bool "Use local timer interrupts"
 	depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
-		REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
+		REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
 	default y
-	select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
+	select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
 	help
 	  Enable support for local timers on SMP platforms, rather then the
 	  legacy IPI broadcast method.  Local timers allows the system

arch/arm/Kconfig.debug

@@ -83,6 +83,14 @@ config DEBUG_ICEDCC
 	  It does include a timeout to ensure that the system does not
 	  totally freeze when there is nothing connected to read.
 
+config OC_ETM
+	bool "On-chip ETM and ETB"
+	select ARM_AMBA
+	help
+	  Enables the on-chip embedded trace macrocell and embedded trace
+	  buffer driver that will allow you to collect traces of the
+	  kernel code.
+
 config DEBUG_DC21285_PORT
 	bool "Kernel low-level debugging messages via footbridge serial port"
 	depends on DEBUG_LL && FOOTBRIDGE

arch/arm/Makefile

@@ -166,6 +166,7 @@ machine-$(CONFIG_ARCH_SHARK)		:= shark
 machine-$(CONFIG_ARCH_STMP378X)		:= stmp378x
 machine-$(CONFIG_ARCH_STMP37XX)		:= stmp37xx
 machine-$(CONFIG_ARCH_U300)		:= u300
+machine-$(CONFIG_ARCH_U8500)		:= ux500
 machine-$(CONFIG_ARCH_VERSATILE)	:= versatile
 machine-$(CONFIG_ARCH_W90X900)		:= w90x900
 machine-$(CONFIG_FOOTBRIDGE)		:= footbridge
@@ -176,6 +177,7 @@ machine-$(CONFIG_ARCH_MXC91231)		:= mxc91231
 plat-$(CONFIG_ARCH_MXC)		:= mxc
 plat-$(CONFIG_ARCH_OMAP)	:= omap
 plat-$(CONFIG_PLAT_IOP)		:= iop
+plat-$(CONFIG_PLAT_NOMADIK)	:= nomadik
 plat-$(CONFIG_PLAT_ORION)	:= orion
 plat-$(CONFIG_PLAT_PXA)		:= pxa
 plat-$(CONFIG_PLAT_S3C24XX)	:= s3c24xx s3c

arch/arm/configs/at91rm9200dk_defconfig

@@ -120,6 +120,7 @@ CONFIG_ARCH_AT91RM9200DK=y
 # CONFIG_MACH_CARMEVA is not set
 # CONFIG_MACH_KB9200 is not set
 # CONFIG_MACH_ATEB9200 is not set
+CONFIG_MACH_ECO920=y
 
 #
 # AT91RM9200 Feature Selections

arch/arm/configs/u8500_defconfig

+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.32-rc8
+# Mon Nov 30 11:11:29 2009
+#
+CONFIG_ARM=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_GENERIC_LOCKBREAK=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+CONFIG_VECTORS_BASE=0xffff0000
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+CONFIG_CONSTRUCTORS=y
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_LOCK_KERNEL=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_TREE_RCU=y
+# CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_RCU_TRACE is not set
+CONFIG_RCU_FANOUT=32
+# CONFIG_RCU_FANOUT_EXACT is not set
+# CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=17
+CONFIG_GROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+# CONFIG_CGROUPS is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+CONFIG_NAMESPACES=y
+# CONFIG_UTS_NS is not set
+# CONFIG_IPC_NS is not set
+# CONFIG_USER_NS is not set
+# CONFIG_PID_NS is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+CONFIG_RD_BZIP2=y
+CONFIG_RD_LZMA=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+# CONFIG_EMBEDDED is not set
+CONFIG_UID16=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_KALLSYMS_EXTRA_PASS is not set
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+
+#
+# Kernel Performance Events And Counters
+#
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+CONFIG_COMPAT_BRK=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_USE_GENERIC_SMP_HELPERS=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_SLOW_WORK is not set
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_STOP_MACHINE=y
+CONFIG_BLOCK=y
+# CONFIG_LBDAF is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+# CONFIG_DEFAULT_AS is not set
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+# CONFIG_FREEZER is not set
+
+#
+# System Type
+#
+CONFIG_MMU=y
+# CONFIG_ARCH_AAEC2000 is not set
+# CONFIG_ARCH_INTEGRATOR is not set
+# CONFIG_ARCH_REALVIEW is not set
+# CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_AT91 is not set
+# CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_GEMINI is not set
+# CONFIG_ARCH_EBSA110 is not set
+# CONFIG_ARCH_EP93XX is not set
+# CONFIG_ARCH_FOOTBRIDGE is not set
+# CONFIG_ARCH_MXC is not set
+# CONFIG_ARCH_STMP3XXX is not set
+# CONFIG_ARCH_NETX is not set
+# CONFIG_ARCH_H720X is not set
+# CONFIG_ARCH_NOMADIK is not set
+# CONFIG_ARCH_IOP13XX is not set
+# CONFIG_ARCH_IOP32X is not set
+# CONFIG_ARCH_IOP33X is not set
+# CONFIG_ARCH_IXP23XX is not set
+# CONFIG_ARCH_IXP2000 is not set
+# CONFIG_ARCH_IXP4XX is not set
+# CONFIG_ARCH_L7200 is not set
+# CONFIG_ARCH_KIRKWOOD is not set
+# CONFIG_ARCH_LOKI is not set
+# CONFIG_ARCH_MV78XX0 is not set
+# CONFIG_ARCH_ORION5X is not set
+# CONFIG_ARCH_MMP is not set
+# CONFIG_ARCH_KS8695 is not set
+# CONFIG_ARCH_NS9XXX is not set
+# CONFIG_ARCH_W90X900 is not set
+# CONFIG_ARCH_PNX4008 is not set
+# CONFIG_ARCH_PXA is not set
+# CONFIG_ARCH_MSM is not set
+# CONFIG_ARCH_RPC is not set
+# CONFIG_ARCH_SA1100 is not set
+# CONFIG_ARCH_S3C2410 is not set
+# CONFIG_ARCH_S3C64XX is not set
+# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_SHARK is not set
+# CONFIG_ARCH_LH7A40X is not set
+# CONFIG_ARCH_U300 is not set
+# CONFIG_ARCH_DAVINCI is not set
+# CONFIG_ARCH_OMAP is not set
+# CONFIG_ARCH_BCMRING is not set
+CONFIG_ARCH_U8500=y
+CONFIG_PLAT_NOMADIK=y
+CONFIG_HAS_MTU=y
+
+#
+# ST-Ericsson platform type
+#
+
+#
+# ST-Ericsson Multicore Mobile Platforms
+#
+CONFIG_MACH_U8500_MOP=y
+
+#
+# Processor Type
+#
+CONFIG_CPU_32=y
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_V7=y
+CONFIG_CPU_32v7=y
+CONFIG_CPU_ABRT_EV7=y
+CONFIG_CPU_PABRT_V7=y
+CONFIG_CPU_CACHE_V7=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_TLB_V7=y
+CONFIG_CPU_HAS_ASID=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+
+#
+# Processor Features
+#
+CONFIG_ARM_THUMB=y
+# CONFIG_ARM_THUMBEE is not set
+# CONFIG_CPU_ICACHE_DISABLE is not set
+# CONFIG_CPU_DCACHE_DISABLE is not set
+# CONFIG_CPU_BPREDICT_DISABLE is not set
+CONFIG_HAS_TLS_REG=y
+CONFIG_ARM_L1_CACHE_SHIFT=5
+# CONFIG_ARM_ERRATA_430973 is not set
+# CONFIG_ARM_ERRATA_458693 is not set
+# CONFIG_ARM_ERRATA_460075 is not set
+CONFIG_ARM_GIC=y
+CONFIG_COMMON_CLKDEV=y
+
+#
+# Bus support
+#
+CONFIG_ARM_AMBA=y
+# CONFIG_PCI_SYSCALL is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
+# CONFIG_PCCARD is not set
+
+#
+# Kernel Features
+#
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_SMP=y
+CONFIG_HAVE_ARM_SCU=y
+CONFIG_HAVE_ARM_TWD=y
+CONFIG_VMSPLIT_3G=y
+# CONFIG_VMSPLIT_2G is not set
+# CONFIG_VMSPLIT_1G is not set
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_NR_CPUS=2
+# CONFIG_HOTPLUG_CPU is not set
+CONFIG_LOCAL_TIMERS=y
+# CONFIG_PREEMPT_NONE is not set
+# CONFIG_PREEMPT_VOLUNTARY is not set
+CONFIG_PREEMPT=y
+CONFIG_HZ=100
+# CONFIG_THUMB2_KERNEL is not set
+CONFIG_AEABI=y
+CONFIG_OABI_COMPAT=y
+# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
+# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
+# CONFIG_HIGHMEM is not set
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=0
+CONFIG_VIRT_TO_BUS=y
+CONFIG_HAVE_MLOCK=y
+CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+# CONFIG_KSM is not set
+CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
+CONFIG_ALIGNMENT_TRAP=y
+# CONFIG_UACCESS_WITH_MEMCPY is not set
+
+#
+# Boot options
+#
+CONFIG_ZBOOT_ROM_TEXT=0
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_CMDLINE="root=/dev/ram0 console=ttyAMA2,115200n8"
+# CONFIG_XIP_KERNEL is not set
+# CONFIG_KEXEC is not set
+
+#
+# CPU Power Management
+#
+# CONFIG_CPU_IDLE is not set
+
+#
+# Floating point emulation
+#
+
+#
+# At least one emulation must be selected
+#
+# CONFIG_FPE_NWFPE is not set
+# CONFIG_FPE_FASTFPE is not set
+CONFIG_VFP=y
+CONFIG_VFPv3=y
+CONFIG_NEON=y
+
+#
+# Userspace binary formats
+#
+CONFIG_BINFMT_ELF=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_HAVE_AOUT=y
+# CONFIG_BINFMT_AOUT is not set
+# CONFIG_BINFMT_MISC is not set
+
+#
+# Power management options
+#
+# CONFIG_PM is not set
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+# CONFIG_NET is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+# CONFIG_DEVTMPFS is not set
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE=""
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_MTD is not set
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=65536
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_MISC_DEVICES is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
+# CONFIG_INPUT_POLLDEV is not set
+
+#
+# Userland interfaces
+#
+CONFIG_INPUT_MOUSEDEV=y
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+# CONFIG_INPUT_JOYDEV is not set
+CONFIG_INPUT_EVDEV=y
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+CONFIG_VT=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_VT_CONSOLE=y
+CONFIG_HW_CONSOLE=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+# CONFIG_SERIAL_8250 is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_AMBA_PL010 is not set
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+# CONFIG_SERIAL_MAX3100 is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+CONFIG_SPI=y
+# CONFIG_SPI_DEBUG is not set
+CONFIG_SPI_MASTER=y
+
+#
+# SPI Master Controller Drivers
+#
+# CONFIG_SPI_BITBANG is not set
+CONFIG_SPI_PL022=y
+
+#
+# SPI Protocol Masters
+#
+# CONFIG_SPI_SPIDEV is not set
+# CONFIG_SPI_TLE62X0 is not set
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_WATCHDOG is not set
+CONFIG_SSB_POSSIBLE=y
+
+#
+# Sonics Silicon Backplane
+#
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_MFD_MC13783 is not set
+# CONFIG_EZX_PCAP is not set
+# CONFIG_REGULATOR is not set
+# CONFIG_MEDIA_SUPPORT is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Console display driver support
+#
+# CONFIG_VGA_CONSOLE is not set
+CONFIG_DUMMY_CONSOLE=y
+# CONFIG_SOUND is not set
+# CONFIG_HID_SUPPORT is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+CONFIG_RTC_LIB=y
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+
+#
+# TI VLYNQ
+#
+# CONFIG_STAGING is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+CONFIG_EXT2_FS_SECURITY=y
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4_FS is not set
+CONFIG_FS_MBCACHE=y
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+CONFIG_FS_POSIX_ACL=y
+# CONFIG_XFS_FS is not set
+# CONFIG_BTRFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+CONFIG_FILE_LOCKING=y
+CONFIG_FSNOTIFY=y
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+CONFIG_GENERIC_ACL=y
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_HUGETLB_PAGE is not set
+CONFIG_CONFIGFS_FS=m
+# CONFIG_MISC_FILESYSTEMS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+CONFIG_DETECT_HUNG_TASK=y
+# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
+CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_KMEMLEAK is not set
+# CONFIG_DEBUG_PREEMPT is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_LOCK_ALLOC is not set
+# CONFIG_PROVE_LOCKING is not set
+# CONFIG_LOCK_STAT is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SYSCTL_SYSCALL_CHECK is not set
+# CONFIG_PAGE_POISONING is not set
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_TRACING_SUPPORT=y
+# CONFIG_FTRACE is not set
+# CONFIG_SAMPLES is not set
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_KGDB is not set
+CONFIG_ARM_UNWIND=y
+CONFIG_DEBUG_USER=y
+CONFIG_DEBUG_ERRORS=y
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_LL is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+# CONFIG_CRYPTO is not set
+# CONFIG_BINARY_PRINTF is not set
+
+#
+# Library routines
+#
+CONFIG_GENERIC_FIND_LAST_BIT=y
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+CONFIG_CRC_T10DIF=m
+# CONFIG_CRC_ITU_T is not set
+# CONFIG_CRC32 is not set
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DECOMPRESS_BZIP2=y
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y

arch/arm/include/asm/hardware/coresight.h

+/*
+ * linux/arch/arm/include/asm/hardware/coresight.h
+ *
+ * CoreSight components' registers
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ * Alexander Shishkin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_HARDWARE_CORESIGHT_H
+#define __ASM_HARDWARE_CORESIGHT_H
+
+#define TRACER_ACCESSED_BIT	0
+#define TRACER_RUNNING_BIT	1
+#define TRACER_CYCLE_ACC_BIT	2
+#define TRACER_ACCESSED		BIT(TRACER_ACCESSED_BIT)
+#define TRACER_RUNNING		BIT(TRACER_RUNNING_BIT)
+#define TRACER_CYCLE_ACC	BIT(TRACER_CYCLE_ACC_BIT)
+
+struct tracectx {
+	unsigned int	etb_bufsz;
+	void __iomem	*etb_regs;
+	void __iomem	*etm_regs;
+	unsigned long	flags;
+	int		ncmppairs;
+	int		etm_portsz;
+	struct device	*dev;
+	struct clk	*emu_clk;
+	struct mutex	mutex;
+};
+
+#define TRACER_TIMEOUT 10000
+
+#define etm_writel(t, v, x) \
+	(__raw_writel((v), (t)->etm_regs + (x)))
+#define etm_readl(t, x) (__raw_readl((t)->etm_regs + (x)))
+
+/* CoreSight Management Registers */
+#define CSMR_LOCKACCESS 0xfb0
+#define CSMR_LOCKSTATUS 0xfb4
+#define CSMR_AUTHSTATUS 0xfb8
+#define CSMR_DEVID	0xfc8
+#define CSMR_DEVTYPE	0xfcc
+/* CoreSight Component Registers */
+#define CSCR_CLASS	0xff4
+
+#define CSCR_PRSR	0x314
+
+#define UNLOCK_MAGIC	0xc5acce55
+
+/* ETM control register, "ETM Architecture", 3.3.1 */
+#define ETMR_CTRL		0
+#define ETMCTRL_POWERDOWN	1
+#define ETMCTRL_PROGRAM		(1 << 10)
+#define ETMCTRL_PORTSEL		(1 << 11)
+#define ETMCTRL_DO_CONTEXTID	(3 << 14)
+#define ETMCTRL_PORTMASK1	(7 << 4)
+#define ETMCTRL_PORTMASK2	(1 << 21)
+#define ETMCTRL_PORTMASK	(ETMCTRL_PORTMASK1 | ETMCTRL_PORTMASK2)
+#define ETMCTRL_PORTSIZE(x) ((((x) & 7) << 4) | (!!((x) & 8)) << 21)
+#define ETMCTRL_DO_CPRT		(1 << 1)
+#define ETMCTRL_DATAMASK	(3 << 2)
+#define ETMCTRL_DATA_DO_DATA	(1 << 2)
+#define ETMCTRL_DATA_DO_ADDR	(1 << 3)
+#define ETMCTRL_DATA_DO_BOTH	(ETMCTRL_DATA_DO_DATA | ETMCTRL_DATA_DO_ADDR)
+#define ETMCTRL_BRANCH_OUTPUT	(1 << 8)
+#define ETMCTRL_CYCLEACCURATE	(1 << 12)
+
+/* ETM configuration code register */
+#define ETMR_CONFCODE		(0x04)
+
+/* ETM trace start/stop resource control register */
+#define ETMR_TRACESSCTRL	(0x18)
+
+/* ETM trigger event register */
+#define ETMR_TRIGEVT		(0x08)
+
+/* address access type register bits, "ETM architecture",
+ * table 3-27 */
+/* - access type */
+#define ETMAAT_IFETCH		0
+#define ETMAAT_IEXEC		1
+#define ETMAAT_IEXECPASS	2
+#define ETMAAT_IEXECFAIL	3
+#define ETMAAT_DLOADSTORE	4
+#define ETMAAT_DLOAD		5
+#define ETMAAT_DSTORE		6
+/* - comparison access size */
+#define ETMAAT_JAVA		(0 << 3)
+#define ETMAAT_THUMB		(1 << 3)
+#define ETMAAT_ARM		(3 << 3)
+/* - data value comparison control */
+#define ETMAAT_NOVALCMP		(0 << 5)
+#define ETMAAT_VALMATCH		(1 << 5)
+#define ETMAAT_VALNOMATCH	(3 << 5)
+/* - exact match */
+#define ETMAAT_EXACTMATCH	(1 << 7)
+/* - context id comparator control */
+#define ETMAAT_IGNCONTEXTID	(0 << 8)
+#define ETMAAT_VALUE1		(1 << 8)
+#define ETMAAT_VALUE2		(2 << 8)
+#define ETMAAT_VALUE3		(3 << 8)
+/* - security level control */
+#define ETMAAT_IGNSECURITY	(0 << 10)
+#define ETMAAT_NSONLY		(1 << 10)
+#define ETMAAT_SONLY		(2 << 10)
+
+#define ETMR_COMP_VAL(x)	(0x40 + (x) * 4)
+#define ETMR_COMP_ACC_TYPE(x)	(0x80 + (x) * 4)
+
+/* ETM status register, "ETM Architecture", 3.3.2 */
+#define ETMR_STATUS		(0x10)
+#define ETMST_OVERFLOW		(1 << 0)
+#define ETMST_PROGBIT		(1 << 1)
+#define ETMST_STARTSTOP		(1 << 2)
+#define ETMST_TRIGGER		(1 << 3)
+
+#define etm_progbit(t)		(etm_readl((t), ETMR_STATUS) & ETMST_PROGBIT)
+#define etm_started(t)		(etm_readl((t), ETMR_STATUS) & ETMST_STARTSTOP)
+#define etm_triggered(t)	(etm_readl((t), ETMR_STATUS) & ETMST_TRIGGER)
+
+#define ETMR_TRACEENCTRL2	0x1c
+#define ETMR_TRACEENCTRL	0x24
+#define ETMTE_INCLEXCL		(1 << 24)
+#define ETMR_TRACEENEVT		0x20
+#define ETMCTRL_OPTS		(ETMCTRL_DO_CPRT | \
+				ETMCTRL_DATA_DO_ADDR | \
+				ETMCTRL_BRANCH_OUTPUT | \
+				ETMCTRL_DO_CONTEXTID)
+
+/* ETB registers, "CoreSight Components TRM", 9.3 */
+#define ETBR_DEPTH		0x04
+#define ETBR_STATUS		0x0c
+#define ETBR_READMEM		0x10
+#define ETBR_READADDR		0x14
+#define ETBR_WRITEADDR		0x18
+#define ETBR_TRIGGERCOUNT	0x1c
+#define ETBR_CTRL		0x20
+#define ETBR_FORMATTERCTRL	0x304
+#define ETBFF_ENFTC		1
+#define ETBFF_ENFCONT		(1 << 1)
+#define ETBFF_FONFLIN		(1 << 4)
+#define ETBFF_MANUAL_FLUSH	(1 << 6)
+#define ETBFF_TRIGIN		(1 << 8)
+#define ETBFF_TRIGEVT		(1 << 9)
+#define ETBFF_TRIGFL		(1 << 10)
+
+#define etb_writel(t, v, x) \
+	(__raw_writel((v), (t)->etb_regs + (x)))
+#define etb_readl(t, x) (__raw_readl((t)->etb_regs + (x)))
+
+#define etm_lock(t) do { etm_writel((t), 0, CSMR_LOCKACCESS); } while (0)
+#define etm_unlock(t) \
+	do { etm_writel((t), UNLOCK_MAGIC, CSMR_LOCKACCESS); } while (0)
+
+#define etb_lock(t) do { etb_writel((t), 0, CSMR_LOCKACCESS); } while (0)
+#define etb_unlock(t) \
+	do { etb_writel((t), UNLOCK_MAGIC, CSMR_LOCKACCESS); } while (0)
+
+#endif /* __ASM_HARDWARE_CORESIGHT_H */
+

arch/arm/kernel/Makefile

@@ -17,6 +17,8 @@ obj-y		:= compat.o elf.o entry-armv.o entry-common.o irq.o \
 		   process.o ptrace.o return_address.o setup.o signal.o \
 		   sys_arm.o stacktrace.o time.o traps.o
 
+obj-$(CONFIG_OC_ETM)		+= etm.o
+
 obj-$(CONFIG_ISA_DMA_API)	+= dma.o
 obj-$(CONFIG_ARCH_ACORN)	+= ecard.o 
 obj-$(CONFIG_FIQ)		+= fiq.o

arch/arm/kernel/etm.c

+/*
+ * linux/arch/arm/kernel/etm.c
+ *
+ * Driver for ARM's Embedded Trace Macrocell and Embedded Trace Buffer.
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ * Alexander Shishkin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/io.h>
+#include <linux/sysrq.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/amba/bus.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/vmalloc.h>
+#include <linux/mutex.h>
+#include <asm/hardware/coresight.h>
+#include <asm/sections.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexander Shishkin");
+
+static struct tracectx tracer;
+
+static inline bool trace_isrunning(struct tracectx *t)
+{
+	return !!(t->flags & TRACER_RUNNING);
+}
+
+static int etm_setup_address_range(struct tracectx *t, int n,
+		unsigned long start, unsigned long end, int exclude, int data)
+{
+	u32 flags = ETMAAT_ARM | ETMAAT_IGNCONTEXTID | ETMAAT_NSONLY | \
+		    ETMAAT_NOVALCMP;
+
+	if (n < 1 || n > t->ncmppairs)
+		return -EINVAL;
+
+	/* comparators and ranges are numbered starting with 1 as opposed
+	 * to bits in a word */
+	n--;
+
+	if (data)
+		flags |= ETMAAT_DLOADSTORE;
+	else
+		flags |= ETMAAT_IEXEC;
+
+	/* first comparator for the range */
+	etm_writel(t, flags, ETMR_COMP_ACC_TYPE(n * 2));
+	etm_writel(t, start, ETMR_COMP_VAL(n * 2));
+
+	/* second comparator is right next to it */
+	etm_writel(t, flags, ETMR_COMP_ACC_TYPE(n * 2 + 1));
+	etm_writel(t, end, ETMR_COMP_VAL(n * 2 + 1));
+
+	flags = exclude ? ETMTE_INCLEXCL : 0;
+	etm_writel(t, flags | (1 << n), ETMR_TRACEENCTRL);
+
+	return 0;
+}
+
+static int trace_start(struct tracectx *t)
+{
+	u32 v;
+	unsigned long timeout = TRACER_TIMEOUT;
+
+	etb_unlock(t);
+
+	etb_writel(t, 0, ETBR_FORMATTERCTRL);
+	etb_writel(t, 1, ETBR_CTRL);
+
+	etb_lock(t);
+
+	/* configure etm */
+	v = ETMCTRL_OPTS | ETMCTRL_PROGRAM | ETMCTRL_PORTSIZE(t->etm_portsz);
+
+	if (t->flags & TRACER_CYCLE_ACC)
+		v |= ETMCTRL_CYCLEACCURATE;
+
+	etm_unlock(t);
+
+	etm_writel(t, v, ETMR_CTRL);
+
+	while (!(etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM) && --timeout)
+		;
+	if (!timeout) {
+		dev_dbg(t->dev, "Waiting for progbit to assert timed out\n");
+		etm_lock(t);
+		return -EFAULT;
+	}
+
+	etm_setup_address_range(t, 1, (unsigned long)_stext,
+			(unsigned long)_etext, 0, 0);
+	etm_writel(t, 0, ETMR_TRACEENCTRL2);
+	etm_writel(t, 0, ETMR_TRACESSCTRL);
+	etm_writel(t, 0x6f, ETMR_TRACEENEVT);
+
+	v &= ~ETMCTRL_PROGRAM;
+	v |= ETMCTRL_PORTSEL;
+
+	etm_writel(t, v, ETMR_CTRL);
+
+	timeout = TRACER_TIMEOUT;
+	while (etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM && --timeout)
+		;
+	if (!timeout) {
+		dev_dbg(t->dev, "Waiting for progbit to deassert timed out\n");
+		etm_lock(t);
+		return -EFAULT;
+	}
+
+	etm_lock(t);
+
+	t->flags |= TRACER_RUNNING;
+
+	return 0;
+}
+
+static int trace_stop(struct tracectx *t)
+{
+	unsigned long timeout = TRACER_TIMEOUT;
+
+	etm_unlock(t);
+
+	etm_writel(t, 0x440, ETMR_CTRL);
+	while (!(etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM) && --timeout)
+		;
+	if (!timeout) {
+		dev_dbg(t->dev, "Waiting for progbit to assert timed out\n");
+		etm_lock(t);
+		return -EFAULT;
+	}
+
+	etm_lock(t);
+
+	etb_unlock(t);
+	etb_writel(t, ETBFF_MANUAL_FLUSH, ETBR_FORMATTERCTRL);
+
+	timeout = TRACER_TIMEOUT;
+	while (etb_readl(t, ETBR_FORMATTERCTRL) &
+			ETBFF_MANUAL_FLUSH && --timeout)
+		;
+	if (!timeout) {
+		dev_dbg(t->dev, "Waiting for formatter flush to commence "
+				"timed out\n");
+		etb_lock(t);
+		return -EFAULT;
+	}
+
+	etb_writel(t, 0, ETBR_CTRL);
+
+	etb_lock(t);
+
+	t->flags &= ~TRACER_RUNNING;
+
+	return 0;
+}
+
+static int etb_getdatalen(struct tracectx *t)
+{
+	u32 v;
+	int rp, wp;
+
+	v = etb_readl(t, ETBR_STATUS);
+
+	if (v & 1)
+		return t->etb_bufsz;
+
+	rp = etb_readl(t, ETBR_READADDR);
+	wp = etb_readl(t, ETBR_WRITEADDR);
+
+	if (rp > wp) {
+		etb_writel(t, 0, ETBR_READADDR);
+		etb_writel(t, 0, ETBR_WRITEADDR);
+
+		return 0;
+	}
+
+	return wp - rp;
+}
+
+/* sysrq+v will always stop the running trace and leave it at that */
+static void etm_dump(void)
+{
+	struct tracectx *t = &tracer;
+	u32 first = 0;
+	int length;
+
+	if (!t->etb_regs) {
+		printk(KERN_INFO "No tracing hardware found\n");
+		return;
+	}
+
+	if (trace_isrunning(t))
+		trace_stop(t);
+
+	etb_unlock(t);
+
+	length = etb_getdatalen(t);
+
+	if (length == t->etb_bufsz)
+		first = etb_readl(t, ETBR_WRITEADDR);
+
+	etb_writel(t, first, ETBR_READADDR);
+
+	printk(KERN_INFO "Trace buffer contents length: %d\n", length);
+	printk(KERN_INFO "--- ETB buffer begin ---\n");
+	for (; length; length--)
+		printk("%08x", cpu_to_be32(etb_readl(t, ETBR_READMEM)));
+	printk(KERN_INFO "\n--- ETB buffer end ---\n");
+
+	/* deassert the overflow bit */
+	etb_writel(t, 1, ETBR_CTRL);
+	etb_writel(t, 0, ETBR_CTRL);
+
+	etb_writel(t, 0, ETBR_TRIGGERCOUNT);
+	etb_writel(t, 0, ETBR_READADDR);
+	etb_writel(t, 0, ETBR_WRITEADDR);
+
+	etb_lock(t);
+}
+
+static void sysrq_etm_dump(int key, struct tty_struct *tty)
+{
+	dev_dbg(tracer.dev, "Dumping ETB buffer\n");
+	etm_dump();
+}
+
+static struct sysrq_key_op sysrq_etm_op = {
+	.handler = sysrq_etm_dump,
+	.help_msg = "ETM buffer dump",
+	.action_msg = "etm",
+};
+
+static int etb_open(struct inode *inode, struct file *file)
+{
+	if (!tracer.etb_regs)
+		return -ENODEV;
+
+	file->private_data = &tracer;
+
+	return nonseekable_open(inode, file);
+}
+
+static ssize_t etb_read(struct file *file, char __user *data,
+		size_t len, loff_t *ppos)
+{
+	int total, i;
+	long length;
+	struct tracectx *t = file->private_data;
+	u32 first = 0;
+	u32 *buf;
+
+	mutex_lock(&t->mutex);
+
+	if (trace_isrunning(t)) {
+		length = 0;
+		goto out;
+	}
+
+	etb_unlock(t);
+
+	total = etb_getdatalen(t);
+	if (total == t->etb_bufsz)
+		first = etb_readl(t, ETBR_WRITEADDR);
+
+	etb_writel(t, first, ETBR_READADDR);
+
+	length = min(total * 4, (int)len);
+	buf = vmalloc(length);
+
+	dev_dbg(t->dev, "ETB buffer length: %d\n", total);
+	dev_dbg(t->dev, "ETB status reg: %x\n", etb_readl(t, ETBR_STATUS));
+	for (i = 0; i < length / 4; i++)
+		buf[i] = etb_readl(t, ETBR_READMEM);
+
+	/* the only way to deassert overflow bit in ETB status is this */
+	etb_writel(t, 1, ETBR_CTRL);
+	etb_writel(t, 0, ETBR_CTRL);
+
+	etb_writel(t, 0, ETBR_WRITEADDR);
+	etb_writel(t, 0, ETBR_READADDR);
+	etb_writel(t, 0, ETBR_TRIGGERCOUNT);
+
+	etb_lock(t);
+
+	length -= copy_to_user(data, buf, length);
+	vfree(buf);
+
+out:
+	mutex_unlock(&t->mutex);
+
+	return length;
+}
+
+static int etb_release(struct inode *inode, struct file *file)
+{
+	/* there's nothing to do here, actually */
+	return 0;
+}
+
+static const struct file_operations etb_fops = {
+	.owner = THIS_MODULE,
+	.read = etb_read,
+	.open = etb_open,
+	.release = etb_release,
+};
+
+static struct miscdevice etb_miscdev = {
+	.name = "tracebuf",
+	.minor = 0,
+	.fops = &etb_fops,
+};
+
+static int __init etb_probe(struct amba_device *dev, struct amba_id *id)
+{
+	struct tracectx *t = &tracer;
+	int ret = 0;
+
+	ret = amba_request_regions(dev, NULL);
+	if (ret)
+		goto out;
+
+	t->etb_regs = ioremap_nocache(dev->res.start, resource_size(&dev->res));
+	if (!t->etb_regs) {
+		ret = -ENOMEM;
+		goto out_release;
+	}
+
+	amba_set_drvdata(dev, t);
+
+	etb_miscdev.parent = &dev->dev;
+
+	ret = misc_register(&etb_miscdev);
+	if (ret)
+		goto out_unmap;
+
+	t->emu_clk = clk_get(&dev->dev, "emu_src_ck");
+	if (IS_ERR(t->emu_clk)) {
+		dev_dbg(&dev->dev, "Failed to obtain emu_src_ck.\n");
+		return -EFAULT;
+	}
+
+	clk_enable(t->emu_clk);
+
+	etb_unlock(t);
+	t->etb_bufsz = etb_readl(t, ETBR_DEPTH);
+	dev_dbg(&dev->dev, "Size: %x\n", t->etb_bufsz);
+
+	/* make sure trace capture is disabled */
+	etb_writel(t, 0, ETBR_CTRL);
+	etb_writel(t, 0x1000, ETBR_FORMATTERCTRL);
+	etb_lock(t);
+
+	dev_dbg(&dev->dev, "ETB AMBA driver initialized.\n");
+
+out:
+	return ret;
+
+out_unmap:
+	amba_set_drvdata(dev, NULL);
+	iounmap(t->etb_regs);
+
+out_release:
+	amba_release_regions(dev);
+
+	return ret;
+}
+
+static int etb_remove(struct amba_device *dev)
+{
+	struct tracectx *t = amba_get_drvdata(dev);
+
+	amba_set_drvdata(dev, NULL);
+
+	iounmap(t->etb_regs);
+	t->etb_regs = NULL;
+
+	clk_disable(t->emu_clk);
+	clk_put(t->emu_clk);
+
+	amba_release_regions(dev);
+
+	return 0;
+}
+
+static struct amba_id etb_ids[] = {
+	{
+		.id	= 0x0003b907,
+		.mask	= 0x0007ffff,
+	},
+	{ 0, 0 },
+};
+
+static struct amba_driver etb_driver = {
+	.drv		= {
+		.name	= "etb",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= etb_probe,
+	.remove		= etb_remove,
+	.id_table	= etb_ids,
+};
+
+/* use a sysfs file "trace_running" to start/stop tracing */
+static ssize_t trace_running_show(struct kobject *kobj,
+				  struct kobj_attribute *attr,
+				  char *buf)
+{
+	return sprintf(buf, "%x\n", trace_isrunning(&tracer));
+}
+
+static ssize_t trace_running_store(struct kobject *kobj,
+				   struct kobj_attribute *attr,
+				   const char *buf, size_t n)
+{
+	unsigned int value;
+	int ret;
+
+	if (sscanf(buf, "%u", &value) != 1)
+		return -EINVAL;
+
+	mutex_lock(&tracer.mutex);
+	ret = value ? trace_start(&tracer) : trace_stop(&tracer);
+	mutex_unlock(&tracer.mutex);
+
+	return ret ? : n;
+}
+
+static struct kobj_attribute trace_running_attr =
+	__ATTR(trace_running, 0644, trace_running_show, trace_running_store);
+
+static ssize_t trace_info_show(struct kobject *kobj,
+				  struct kobj_attribute *attr,
+				  char *buf)
+{
+	u32 etb_wa, etb_ra, etb_st, etb_fc, etm_ctrl, etm_st;
+	int datalen;
+
+	etb_unlock(&tracer);
+	datalen = etb_getdatalen(&tracer);
+	etb_wa = etb_readl(&tracer, ETBR_WRITEADDR);
+	etb_ra = etb_readl(&tracer, ETBR_READADDR);
+	etb_st = etb_readl(&tracer, ETBR_STATUS);
+	etb_fc = etb_readl(&tracer, ETBR_FORMATTERCTRL);
+	etb_lock(&tracer);
+
+	etm_unlock(&tracer);
+	etm_ctrl = etm_readl(&tracer, ETMR_CTRL);
+	etm_st = etm_readl(&tracer, ETMR_STATUS);
+	etm_lock(&tracer);
+
+	return sprintf(buf, "Trace buffer len: %d\nComparator pairs: %d\n"
+			"ETBR_WRITEADDR:\t%08x\n"
+			"ETBR_READADDR:\t%08x\n"
+			"ETBR_STATUS:\t%08x\n"
+			"ETBR_FORMATTERCTRL:\t%08x\n"
+			"ETMR_CTRL:\t%08x\n"
+			"ETMR_STATUS:\t%08x\n",
+			datalen,
+			tracer.ncmppairs,
+			etb_wa,
+			etb_ra,
+			etb_st,
+			etb_fc,
+			etm_ctrl,
+			etm_st
+			);
+}
+
+static struct kobj_attribute trace_info_attr =
+	__ATTR(trace_info, 0444, trace_info_show, NULL);
+
+static ssize_t trace_mode_show(struct kobject *kobj,
+				  struct kobj_attribute *attr,
+				  char *buf)
+{
+	return sprintf(buf, "%d %d\n",
+			!!(tracer.flags & TRACER_CYCLE_ACC),
+			tracer.etm_portsz);
+}
+
+static ssize_t trace_mode_store(struct kobject *kobj,
+				   struct kobj_attribute *attr,
+				   const char *buf, size_t n)
+{
+	unsigned int cycacc, portsz;
+
+	if (sscanf(buf, "%u %u", &cycacc, &portsz) != 2)
+		return -EINVAL;
+
+	mutex_lock(&tracer.mutex);
+	if (cycacc)
+		tracer.flags |= TRACER_CYCLE_ACC;
+	else
+		tracer.flags &= ~TRACER_CYCLE_ACC;
+
+	tracer.etm_portsz = portsz & 0x0f;
+	mutex_unlock(&tracer.mutex);
+
+	return n;
+}
+
+static struct kobj_attribute trace_mode_attr =
+	__ATTR(trace_mode, 0644, trace_mode_show, trace_mode_store);
+
+static int __init etm_probe(struct amba_device *dev, struct amba_id *id)
+{
+	struct tracectx *t = &tracer;
+	int ret = 0;
+
+	if (t->etm_regs) {
+		dev_dbg(&dev->dev, "ETM already initialized\n");
+		ret = -EBUSY;
+		goto out;
+	}
+
+	ret = amba_request_regions(dev, NULL);
+	if (ret)
+		goto out;
+
+	t->etm_regs = ioremap_nocache(dev->res.start, resource_size(&dev->res));
+	if (!t->etm_regs) {
+		ret = -ENOMEM;
+		goto out_release;
+	}
+
+	amba_set_drvdata(dev, t);
+
+	mutex_init(&t->mutex);
+	t->dev = &dev->dev;
+	t->flags = TRACER_CYCLE_ACC;
+	t->etm_portsz = 1;
+
+	etm_unlock(t);
+	ret = etm_readl(t, CSCR_PRSR);
+
+	t->ncmppairs = etm_readl(t, ETMR_CONFCODE) & 0xf;
+	etm_writel(t, 0x440, ETMR_CTRL);
+	etm_lock(t);
+
+	ret = sysfs_create_file(&dev->dev.kobj,
+			&trace_running_attr.attr);
+	if (ret)
+		goto out_unmap;
+
+	/* failing to create any of these two is not fatal */
+	ret = sysfs_create_file(&dev->dev.kobj, &trace_info_attr.attr);
+	if (ret)
+		dev_dbg(&dev->dev, "Failed to create trace_info in sysfs\n");
+
+	ret = sysfs_create_file(&dev->dev.kobj, &trace_mode_attr.attr);
+	if (ret)
+		dev_dbg(&dev->dev, "Failed to create trace_mode in sysfs\n");
+
+	dev_dbg(t->dev, "ETM AMBA driver initialized.\n");
+
+out:
+	return ret;
+
+out_unmap:
+	amba_set_drvdata(dev, NULL);
+	iounmap(t->etm_regs);
+
+out_release:
+	amba_release_regions(dev);
+
+	return ret;
+}
+
+static int etm_remove(struct amba_device *dev)
+{
+	struct tracectx *t = amba_get_drvdata(dev);
+
+	amba_set_drvdata(dev, NULL);
+
+	iounmap(t->etm_regs);
+	t->etm_regs = NULL;
+
+	amba_release_regions(dev);
+
+	sysfs_remove_file(&dev->dev.kobj, &trace_running_attr.attr);
+	sysfs_remove_file(&dev->dev.kobj, &trace_info_attr.attr);
+	sysfs_remove_file(&dev->dev.kobj, &trace_mode_attr.attr);
+
+	return 0;
+}
+
+static struct amba_id etm_ids[] = {
+	{
+		.id	= 0x0003b921,
+		.mask	= 0x0007ffff,
+	},
+	{ 0, 0 },
+};
+
+static struct amba_driver etm_driver = {
+	.drv		= {
+		.name   = "etm",
+		.owner  = THIS_MODULE,
+	},
+	.probe		= etm_probe,
+	.remove		= etm_remove,
+	.id_table	= etm_ids,
+};
+
+static int __init etm_init(void)
+{
+	int retval;
+
+	retval = amba_driver_register(&etb_driver);
+	if (retval) {
+		printk(KERN_ERR "Failed to register etb\n");
+		return retval;
+	}
+
+	retval = amba_driver_register(&etm_driver);
+	if (retval) {
+		amba_driver_unregister(&etb_driver);
+		printk(KERN_ERR "Failed to probe etm\n");
+		return retval;
+	}
+
+	/* not being able to install this handler is not fatal */
+	(void)register_sysrq_key('v', &sysrq_etm_op);
+
+	return 0;
+}
+
+device_initcall(etm_init);
+

arch/arm/mach-at91/Kconfig

@@ -163,6 +163,11 @@ config MACH_CPUAT91
 	  Select this if you are using the Eukrea Electromatique's
 	  CPUAT91 board <http://www.eukrea.com/>.
 
+config MACH_ECO920
+	bool "eco920"
+	help
+	  Select this if you are using the eco920 board
+
 endif
 
 # ----------------------------------------------------------

arch/arm/mach-at91/Makefile

@@ -35,6 +35,7 @@ obj-$(CONFIG_MACH_PICOTUX2XX)	+= board-picotux200.o
 obj-$(CONFIG_MACH_ECBAT91)	+= board-ecbat91.o
 obj-$(CONFIG_MACH_YL9200)	+= board-yl-9200.o
 obj-$(CONFIG_MACH_CPUAT91)	+= board-cpuat91.o
+obj-$(CONFIG_MACH_ECO920)	+= board-eco920.o
 
 # AT91SAM9260 board-specific support
 obj-$(CONFIG_MACH_AT91SAM9260EK) += board-sam9260ek.o
@@ -77,6 +78,7 @@ obj-y				+= leds.o
 # Power Management
 obj-$(CONFIG_PM)		+= pm.o
 obj-$(CONFIG_AT91_SLOW_CLOCK)	+= pm_slowclock.o
+obj-$(CONFIG_CPU_IDLE)	+= cpuidle.o
 
 ifeq ($(CONFIG_PM_DEBUG),y)
 CFLAGS_pm.o += -DDEBUG

arch/arm/mach-at91/at91sam9g45_devices.c

@@ -130,6 +130,62 @@ void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
 #endif
 
 
+/* --------------------------------------------------------------------
+ *  USB Host HS (EHCI)
+ *  Needs an OHCI host for low and full speed management
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
+static u64 ehci_dmamask = DMA_BIT_MASK(32);
+static struct at91_usbh_data usbh_ehci_data;
+
+static struct resource usbh_ehci_resources[] = {
+	[0] = {
+		.start	= AT91SAM9G45_EHCI_BASE,
+		.end	= AT91SAM9G45_EHCI_BASE + SZ_1M - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= AT91SAM9G45_ID_UHPHS,
+		.end	= AT91SAM9G45_ID_UHPHS,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device at91_usbh_ehci_device = {
+	.name		= "atmel-ehci",
+	.id		= -1,
+	.dev		= {
+				.dma_mask		= &ehci_dmamask,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
+				.platform_data		= &usbh_ehci_data,
+	},
+	.resource	= usbh_ehci_resources,
+	.num_resources	= ARRAY_SIZE(usbh_ehci_resources),
+};
+
+void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data)
+{
+	int i;
+
+	if (!data)
+		return;
+
+	/* Enable VBus control for UHP ports */
+	for (i = 0; i < data->ports; i++) {
+		if (data->vbus_pin[i])
+			at91_set_gpio_output(data->vbus_pin[i], 0);
+	}
+
+	usbh_ehci_data = *data;
+	at91_clock_associate("uhphs_clk", &at91_usbh_ehci_device.dev, "ehci_clk");
+	platform_device_register(&at91_usbh_ehci_device);
+}
+#else
+void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data) {}
+#endif
+
+
 /* --------------------------------------------------------------------
  *  USB HS Device (Gadget)
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/board-eco920.c

+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/board.h>
+#include <mach/at91rm9200_mc.h>
+#include "generic.h"
+
+static void __init eco920_map_io(void)
+{
+	at91rm9200_initialize(18432000, AT91RM9200_PQFP);
+
+	/* Setup the LEDs */
+	at91_init_leds(AT91_PIN_PB0, AT91_PIN_PB1);
+
+	/* DBGU on ttyS0. (Rx & Tx only */
+	at91_register_uart(0, 0, 0);
+
+	/* set serial console to ttyS0 (ie, DBGU) */
+	at91_set_serial_console(0);
+}
+
+static void __init eco920_init_irq(void)
+{
+	at91rm9200_init_interrupts(NULL);
+}
+
+static struct at91_eth_data __initdata eco920_eth_data = {
+	.phy_irq_pin	= AT91_PIN_PC2,
+	.is_rmii	= 1,
+};
+
+static struct at91_usbh_data __initdata eco920_usbh_data = {
+	.ports		= 1,
+};
+
+static struct at91_udc_data __initdata eco920_udc_data = {
+	.vbus_pin	= AT91_PIN_PB12,
+	.pullup_pin	= AT91_PIN_PB13,
+};
+
+static struct at91_mmc_data __initdata eco920_mmc_data = {
+	.slot_b		= 0,
+	.wire4		= 0,
+};
+
+static struct physmap_flash_data eco920_flash_data = {
+	.width  = 2,
+};
+
+static struct resource eco920_flash_resource = {
+	.start          = 0x11000000,
+	.end            = 0x11ffffff,
+	.flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device eco920_flash = {
+	.name           = "physmap-flash",
+	.id             = 0,
+	.dev            = {
+		.platform_data  = &eco920_flash_data,
+	},
+	.resource       = &eco920_flash_resource,
+	.num_resources  = 1,
+};
+
+static struct resource at91_beeper_resources[] = {
+	[0] = {
+		.start          = AT91RM9200_BASE_TC3,
+		.end            = AT91RM9200_BASE_TC3 + 0x39,
+		.flags          = IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device at91_beeper = {
+	.name           = "at91_beeper",
+	.id             = 0,
+	.resource       = at91_beeper_resources,
+	.num_resources  = ARRAY_SIZE(at91_beeper_resources),
+};
+
+static struct spi_board_info eco920_spi_devices[] = {
+	{	/* CAN controller */
+		.modalias	= "tlv5638",
+		.chip_select	= 3,
+		.max_speed_hz	= 20 * 1000 * 1000,
+		.mode		= SPI_CPHA,
+	},
+};
+
+static void __init eco920_board_init(void)
+{
+	at91_add_device_serial();
+	at91_add_device_eth(&eco920_eth_data);
+	at91_add_device_usbh(&eco920_usbh_data);
+	at91_add_device_udc(&eco920_udc_data);
+
+	at91_add_device_mmc(0, &eco920_mmc_data);
+	platform_device_register(&eco920_flash);
+
+	at91_sys_write(AT91_SMC_CSR(7),	AT91_SMC_RWHOLD_(1)
+				| AT91_SMC_RWSETUP_(1)
+				| AT91_SMC_DBW_8
+				| AT91_SMC_WSEN
+				| AT91_SMC_NWS_(15));
+
+	at91_set_A_periph(AT91_PIN_PC6, 1);
+
+	at91_set_gpio_input(AT91_PIN_PA23, 0);
+	at91_set_deglitch(AT91_PIN_PA23, 1);
+
+/* Initialization of the Static Memory Controller for Chip Select 3 */
+	at91_sys_write(AT91_SMC_CSR(3),
+		AT91_SMC_DBW_16  |	/* 16 bit */
+		AT91_SMC_WSEN    |
+		AT91_SMC_NWS_(5) |	/* wait states */
+		AT91_SMC_TDF_(1)	/* float time */
+	);
+
+	at91_clock_associate("tc3_clk", &at91_beeper.dev, "at91_beeper");
+	at91_set_B_periph(AT91_PIN_PB6, 0);
+	platform_device_register(&at91_beeper);
+
+	at91_add_device_spi(eco920_spi_devices, ARRAY_SIZE(eco920_spi_devices));
+}
+
+MACHINE_START(ECO920, "eco920")
+	/* Maintainer: Sascha Hauer */
+	.phys_io	= AT91_BASE_SYS,
+	.io_pg_offst	= (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+	.boot_params	= AT91_SDRAM_BASE + 0x100,
+	.timer		= &at91rm9200_timer,
+	.map_io		= eco920_map_io,
+	.init_irq	= eco920_init_irq,
+	.init_machine	= eco920_board_init,
+MACHINE_END

arch/arm/mach-at91/board-sam9m10g45ek.c

@@ -366,6 +366,7 @@ static void __init ek_board_init(void)
 	at91_add_device_serial();
 	/* USB HS Host */
 	at91_add_device_usbh_ohci(&ek_usbh_hs_data);
+	at91_add_device_usbh_ehci(&ek_usbh_hs_data);
 	/* USB HS Device */
 	at91_add_device_usba(&ek_usba_udc_data);
 	/* SPI */

arch/arm/mach-at91/cpuidle.c

+/*
+ * based on arch/arm/mach-kirkwood/cpuidle.c
+ *
+ * CPU idle support for AT91 SoC
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * The cpu idle uses wait-for-interrupt and RAM self refresh in order
+ * to implement two idle states -
+ * #1 wait-for-interrupt
+ * #2 wait-for-interrupt and RAM self refresh
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/cpuidle.h>
+#include <asm/proc-fns.h>
+#include <linux/io.h>
+
+#include "pm.h"
+
+#define AT91_MAX_STATES	2
+
+static DEFINE_PER_CPU(struct cpuidle_device, at91_cpuidle_device);
+
+static struct cpuidle_driver at91_idle_driver = {
+	.name =         "at91_idle",
+	.owner =        THIS_MODULE,
+};
+
+/* Actual code that puts the SoC in different idle states */
+static int at91_enter_idle(struct cpuidle_device *dev,
+			       struct cpuidle_state *state)
+{
+	struct timeval before, after;
+	int idle_time;
+	u32 saved_lpr;
+
+	local_irq_disable();
+	do_gettimeofday(&before);
+	if (state == &dev->states[0])
+		/* Wait for interrupt state */
+		cpu_do_idle();
+	else if (state == &dev->states[1]) {
+		asm("b 1f; .align 5; 1:");
+		asm("mcr p15, 0, r0, c7, c10, 4");	/* drain write buffer */
+		saved_lpr = sdram_selfrefresh_enable();
+		cpu_do_idle();
+		sdram_selfrefresh_disable(saved_lpr);
+	}
+	do_gettimeofday(&after);
+	local_irq_enable();
+	idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
+			(after.tv_usec - before.tv_usec);
+	return idle_time;
+}
+
+/* Initialize CPU idle by registering the idle states */
+static int at91_init_cpuidle(void)
+{
+	struct cpuidle_device *device;
+
+	cpuidle_register_driver(&at91_idle_driver);
+
+	device = &per_cpu(at91_cpuidle_device, smp_processor_id());
+	device->state_count = AT91_MAX_STATES;
+
+	/* Wait for interrupt state */
+	device->states[0].enter = at91_enter_idle;
+	device->states[0].exit_latency = 1;
+	device->states[0].target_residency = 10000;
+	device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
+	strcpy(device->states[0].name, "WFI");
+	strcpy(device->states[0].desc, "Wait for interrupt");
+
+	/* Wait for interrupt and RAM self refresh state */
+	device->states[1].enter = at91_enter_idle;
+	device->states[1].exit_latency = 10;
+	device->states[1].target_residency = 10000;
+	device->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
+	strcpy(device->states[1].name, "RAM_SR");
+	strcpy(device->states[1].desc, "WFI and RAM Self Refresh");
+
+	if (cpuidle_register_device(device)) {
+		printk(KERN_ERR "at91_init_cpuidle: Failed registering\n");
+		return -EIO;
+	}
+	return 0;
+}
+
+device_initcall(at91_init_cpuidle);

arch/arm/mach-at91/include/mach/board.h

@@ -98,6 +98,7 @@ struct at91_usbh_data {
 };
 extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
 extern void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data);
+extern void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data);
 
  /* NAND / SmartMedia */
 struct atmel_nand_data {

arch/arm/mach-at91/pm.c

@@ -29,62 +29,7 @@
 #include <mach/cpu.h>
 
 #include "generic.h"
-
-#ifdef CONFIG_ARCH_AT91RM9200
-#include <mach/at91rm9200_mc.h>
-
-/*
- * The AT91RM9200 goes into self-refresh mode with this command, and will
- * terminate self-refresh automatically on the next SDRAM access.
- */
-#define sdram_selfrefresh_enable()	at91_sys_write(AT91_SDRAMC_SRR, 1)
-#define sdram_selfrefresh_disable()	do {} while (0)
-
-#elif defined(CONFIG_ARCH_AT91CAP9)
-#include <mach/at91cap9_ddrsdr.h>
-
-static u32 saved_lpr;
-
-static inline void sdram_selfrefresh_enable(void)
-{
-	u32 lpr;
-
-	saved_lpr = at91_sys_read(AT91_DDRSDRC_LPR);
-
-	lpr = saved_lpr & ~AT91_DDRSDRC_LPCB;
-	at91_sys_write(AT91_DDRSDRC_LPR, lpr | AT91_DDRSDRC_LPCB_SELF_REFRESH);
-}
-
-#define sdram_selfrefresh_disable()	at91_sys_write(AT91_DDRSDRC_LPR, saved_lpr)
-
-#else
-#include <mach/at91sam9_sdramc.h>
-
-#ifdef CONFIG_ARCH_AT91SAM9263
-/*
- * FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
- * handle those cases both here and in the Suspend-To-RAM support.
- */
-#define	AT91_SDRAMC	AT91_SDRAMC0
-#warning Assuming EB1 SDRAM controller is *NOT* used
-#endif
-
-static u32 saved_lpr;
-
-static inline void sdram_selfrefresh_enable(void)
-{
-	u32 lpr;
-
-	saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
-
-	lpr = saved_lpr & ~AT91_SDRAMC_LPCB;
-	at91_sys_write(AT91_SDRAMC_LPR, lpr | AT91_SDRAMC_LPCB_SELF_REFRESH);
-}
-
-#define sdram_selfrefresh_disable()	at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
-
-#endif
-
+#include "pm.h"
 
 /*
  * Show the reason for the previous system reset.
@@ -260,6 +205,7 @@ extern u32 at91_slow_clock_sz;
 
 static int at91_pm_enter(suspend_state_t state)
 {
+	u32 saved_lpr;
 	at91_gpio_suspend();
 	at91_irq_suspend();
 
@@ -315,9 +261,9 @@ static int at91_pm_enter(suspend_state_t state)
 			 */
 			asm("b 1f; .align 5; 1:");
 			asm("mcr p15, 0, r0, c7, c10, 4");	/* drain write buffer */
-			sdram_selfrefresh_enable();
+			saved_lpr = sdram_selfrefresh_enable();
 			asm("mcr p15, 0, r0, c7, c0, 4");	/* wait for interrupt */
-			sdram_selfrefresh_disable();
+			sdram_selfrefresh_disable(saved_lpr);
 			break;
 
 		case PM_SUSPEND_ON:

arch/arm/mach-at91/pm.h

+#ifdef CONFIG_ARCH_AT91RM9200
+#include <mach/at91rm9200_mc.h>
+
+/*
+ * The AT91RM9200 goes into self-refresh mode with this command, and will
+ * terminate self-refresh automatically on the next SDRAM access.
+ *
+ * Self-refresh mode is exited as soon as a memory access is made, but we don't
+ * know for sure when that happens. However, we need to restore the low-power
+ * mode if it was enabled before going idle. Restoring low-power mode while
+ * still in self-refresh is "not recommended", but seems to work.
+ */
+
+static inline u32 sdram_selfrefresh_enable(void)
+{
+	u32 saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
+
+	at91_sys_write(AT91_SDRAMC_LPR, 0);
+	at91_sys_write(AT91_SDRAMC_SRR, 1);
+	return saved_lpr;
+}
+
+#define sdram_selfrefresh_disable(saved_lpr)	at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
+
+#elif defined(CONFIG_ARCH_AT91CAP9)
+#include <mach/at91cap9_ddrsdr.h>
+
+
+static inline u32 sdram_selfrefresh_enable(void)
+{
+	u32 saved_lpr, lpr;
+
+	saved_lpr = at91_sys_read(AT91_DDRSDRC_LPR);
+
+	lpr = saved_lpr & ~AT91_DDRSDRC_LPCB;
+	at91_sys_write(AT91_DDRSDRC_LPR, lpr | AT91_DDRSDRC_LPCB_SELF_REFRESH);
+	return saved_lpr;
+}
+
+#define sdram_selfrefresh_disable(saved_lpr)	at91_sys_write(AT91_DDRSDRC_LPR, saved_lpr)
+
+#else
+#include <mach/at91sam9_sdramc.h>
+
+#ifdef CONFIG_ARCH_AT91SAM9263
+/*
+ * FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
+ * handle those cases both here and in the Suspend-To-RAM support.
+ */
+#define	AT91_SDRAMC	AT91_SDRAMC0
+#warning Assuming EB1 SDRAM controller is *NOT* used
+#endif
+
+static inline u32 sdram_selfrefresh_enable(void)
+{
+	u32 saved_lpr, lpr;
+
+	saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
+
+	lpr = saved_lpr & ~AT91_SDRAMC_LPCB;
+	at91_sys_write(AT91_SDRAMC_LPR, lpr | AT91_SDRAMC_LPCB_SELF_REFRESH);
+	return saved_lpr;
+}
+
+#define sdram_selfrefresh_disable(saved_lpr)	at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
+
+#endif

arch/arm/mach-ep93xx/core.c

@@ -31,6 +31,7 @@
 
 #include <mach/hardware.h>
 #include <mach/fb.h>
+#include <mach/ep93xx_keypad.h>
 
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
@@ -728,6 +729,82 @@ void __init ep93xx_register_fb(struct ep93xxfb_mach_info *data)
 	platform_device_register(&ep93xx_fb_device);
 }
 
+
+/*************************************************************************
+ * EP93xx matrix keypad peripheral handling
+ *************************************************************************/
+static struct resource ep93xx_keypad_resource[] = {
+	{
+		.start	= EP93XX_KEY_MATRIX_PHYS_BASE,
+		.end	= EP93XX_KEY_MATRIX_PHYS_BASE + 0x0c - 1,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.start	= IRQ_EP93XX_KEY,
+		.end	= IRQ_EP93XX_KEY,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device ep93xx_keypad_device = {
+	.name			= "ep93xx-keypad",
+	.id			= -1,
+	.num_resources		= ARRAY_SIZE(ep93xx_keypad_resource),
+	.resource		= ep93xx_keypad_resource,
+};
+
+void __init ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data)
+{
+	ep93xx_keypad_device.dev.platform_data = data;
+	platform_device_register(&ep93xx_keypad_device);
+}
+
+int ep93xx_keypad_acquire_gpio(struct platform_device *pdev)
+{
+	int err;
+	int i;
+
+	for (i = 0; i < 8; i++) {
+		err = gpio_request(EP93XX_GPIO_LINE_C(i), dev_name(&pdev->dev));
+		if (err)
+			goto fail_gpio_c;
+		err = gpio_request(EP93XX_GPIO_LINE_D(i), dev_name(&pdev->dev));
+		if (err)
+			goto fail_gpio_d;
+	}
+
+	/* Enable the keypad controller; GPIO ports C and D used for keypad */
+	ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_KEYS |
+				 EP93XX_SYSCON_DEVCFG_GONK);
+
+	return 0;
+
+fail_gpio_d:
+	gpio_free(EP93XX_GPIO_LINE_C(i));
+fail_gpio_c:
+	for ( ; i >= 0; --i) {
+		gpio_free(EP93XX_GPIO_LINE_C(i));
+		gpio_free(EP93XX_GPIO_LINE_D(i));
+	}
+	return err;
+}
+EXPORT_SYMBOL(ep93xx_keypad_acquire_gpio);
+
+void ep93xx_keypad_release_gpio(struct platform_device *pdev)
+{
+	int i;
+
+	for (i = 0; i < 8; i++) {
+		gpio_free(EP93XX_GPIO_LINE_C(i));
+		gpio_free(EP93XX_GPIO_LINE_D(i));
+	}
+
+	/* Disable the keypad controller; GPIO ports C and D used for GPIO */
+	ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS |
+			       EP93XX_SYSCON_DEVCFG_GONK);
+}
+EXPORT_SYMBOL(ep93xx_keypad_release_gpio);
+
+
 extern void ep93xx_gpio_init(void);
 
 void __init ep93xx_init_devices(void)

arch/arm/mach-ep93xx/include/mach/clkdev.h

+/*
+ * arch/arm/mach-ep93xx/include/mach/clkdev.h
+ */
+
 #ifndef __ASM_MACH_CLKDEV_H
 #define __ASM_MACH_CLKDEV_H
 

arch/arm/mach-ep93xx/include/mach/dma.h

+/*
+ * arch/arm/mach-ep93xx/include/mach/dma.h
+ */
+
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H
 

arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h

@@ -134,6 +134,7 @@
 #define EP93XX_UART3_PHYS_BASE		EP93XX_APB_PHYS(0x000e0000)
 #define EP93XX_UART3_BASE		EP93XX_APB_IOMEM(0x000e0000)
 
+#define EP93XX_KEY_MATRIX_PHYS_BASE	EP93XX_APB_PHYS(0x000f0000)
 #define EP93XX_KEY_MATRIX_BASE		EP93XX_APB_IOMEM(0x000f0000)
 
 #define EP93XX_ADC_BASE			EP93XX_APB_IOMEM(0x00100000)

arch/arm/mach-ep93xx/include/mach/hardware.h

 /*
  * arch/arm/mach-ep93xx/include/mach/hardware.h
  */
+
 #ifndef __ASM_ARCH_HARDWARE_H
 #define __ASM_ARCH_HARDWARE_H
 

arch/arm/mach-ep93xx/include/mach/io.h

 /*
  * arch/arm/mach-ep93xx/include/mach/io.h
  */
+
 #ifndef __ASM_MACH_IO_H
 #define __ASM_MACH_IO_H
 

arch/arm/mach-ep93xx/include/mach/platform.h

@@ -8,6 +8,7 @@ struct i2c_gpio_platform_data;
 struct i2c_board_info;
 struct platform_device;
 struct ep93xxfb_mach_info;
+struct ep93xx_keypad_platform_data;
 
 struct ep93xx_eth_data
 {
@@ -39,6 +40,9 @@ void ep93xx_register_fb(struct ep93xxfb_mach_info *data);
 void ep93xx_register_pwm(int pwm0, int pwm1);
 int ep93xx_pwm_acquire_gpio(struct platform_device *pdev);
 void ep93xx_pwm_release_gpio(struct platform_device *pdev);
+void ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data);
+int ep93xx_keypad_acquire_gpio(struct platform_device *pdev);
+void ep93xx_keypad_release_gpio(struct platform_device *pdev);
 
 void ep93xx_init_devices(void);
 extern struct sys_timer ep93xx_timer;

arch/arm/mach-nomadik/Kconfig

@@ -5,13 +5,13 @@ menu "Nomadik boards"
 config MACH_NOMADIK_8815NHK
 	bool "ST 8815 Nomadik Hardware Kit (evaluation board)"
 	select NOMADIK_8815
+	select HAS_MTU
 
 endmenu
 
 config NOMADIK_8815
 	bool
 
-
 config I2C_BITBANG_8815NHK
 	tristate "Driver for bit-bang busses found on the 8815 NHK"
 	depends on I2C && MACH_NOMADIK_8815NHK

arch/arm/mach-nomadik/Makefile

@@ -7,7 +7,7 @@
 
 # Object file lists.
 
-obj-y			+= clock.o timer.o gpio.o
+obj-y			+= clock.o gpio.o
 
 # Cpu revision
 obj-$(CONFIG_NOMADIK_8815) += cpu-8815.o

arch/arm/mach-nomadik/board-nhk8815.c

@@ -25,11 +25,18 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/flash.h>
+
+#include <plat/mtu.h>
+
 #include <mach/setup.h>
 #include <mach/nand.h>
 #include <mach/fsmc.h>
 #include "clock.h"
 
+/* Initial value for SRC control register: all timers use MXTAL/8 source */
+#define SRC_CR_INIT_MASK	0x00007fff
+#define SRC_CR_INIT_VAL		0x2aaa8000
+
 /* These adresses span 16MB, so use three individual pages */
 static struct resource nhk8815_nand_resources[] = {
 	{
@@ -239,6 +246,26 @@ static struct platform_device *nhk8815_platform_devices[] __initdata = {
 	/* will add more devices */
 };
 
+static void __init nomadik_timer_init(void)
+{
+	u32 src_cr;
+
+	/* Configure timer sources in "system reset controller" ctrl reg */
+	src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
+	src_cr &= SRC_CR_INIT_MASK;
+	src_cr |= SRC_CR_INIT_VAL;
+	writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
+
+	/* Save global pointer to mtu, used by platform timer code */
+	mtu_base = io_p2v(NOMADIK_MTU0_BASE);
+
+	nmdk_timer_init();
+}
+
+static struct sys_timer nomadik_timer = {
+	.init	= nomadik_timer_init,
+};
+
 static void __init nhk8815_platform_init(void)
 {
 	int i;

arch/arm/mach-nomadik/include/mach/setup.h

@@ -15,7 +15,7 @@
 extern void cpu8815_map_io(void);
 extern void cpu8815_platform_init(void);
 extern void cpu8815_init_irq(void);
-extern struct sys_timer nomadik_timer;
+extern void nmdk_timer_init(void);
 
 #endif /* NOMADIK_8815 */
 

arch/arm/mach-omap2/Kconfig

@@ -100,3 +100,11 @@ config MACH_OMAP_ZOOM2
 config MACH_OMAP_4430SDP
 	bool "OMAP 4430 SDP board"
 	depends on ARCH_OMAP4
+
+config OMAP3_EMU
+	bool "OMAP3 debugging peripherals"
+	depends on ARCH_OMAP3
+	select OC_ETM
+	help
+	  Say Y here to enable debugging hardware of omap3
+

arch/arm/mach-omap2/Makefile

@@ -44,6 +44,9 @@ obj-$(CONFIG_ARCH_OMAP4)		+= cm4xxx.o
 obj-$(CONFIG_ARCH_OMAP2)		+= clock24xx.o
 obj-$(CONFIG_ARCH_OMAP3)		+= clock34xx.o
 
+# EMU peripherals
+obj-$(CONFIG_OMAP3_EMU)		+= emu.o
+
 iommu-y					+= iommu2.o
 iommu-$(CONFIG_ARCH_OMAP3)		+= omap3-iommu.o
 

arch/arm/mach-omap2/clock34xx.c

@@ -119,7 +119,7 @@ static struct omap_clk omap34xx_clks[] = {
 	CLK(NULL,	"dpll3_m2x2_ck", &dpll3_m2x2_ck, CK_343X),
 	CLK(NULL,	"dpll3_m3_ck",	&dpll3_m3_ck,	CK_343X),
 	CLK(NULL,	"dpll3_m3x2_ck", &dpll3_m3x2_ck, CK_343X),
-	CLK(NULL,	"emu_core_alwon_ck", &emu_core_alwon_ck, CK_343X),
+	CLK("etb",	"emu_core_alwon_ck", &emu_core_alwon_ck, CK_343X),
 	CLK(NULL,	"dpll4_ck",	&dpll4_ck,	CK_343X),
 	CLK(NULL,	"dpll4_x2_ck",	&dpll4_x2_ck,	CK_343X),
 	CLK(NULL,	"omap_96m_alwon_fck", &omap_96m_alwon_fck, CK_343X),
@@ -138,7 +138,7 @@ static struct omap_clk omap34xx_clks[] = {
 	CLK(NULL,	"dpll4_m5x2_ck", &dpll4_m5x2_ck, CK_343X),
 	CLK(NULL,	"dpll4_m6_ck",	&dpll4_m6_ck,	CK_343X),
 	CLK(NULL,	"dpll4_m6x2_ck", &dpll4_m6x2_ck, CK_343X),
-	CLK(NULL,	"emu_per_alwon_ck", &emu_per_alwon_ck, CK_343X),
+	CLK("etb",	"emu_per_alwon_ck", &emu_per_alwon_ck, CK_343X),
 	CLK(NULL,	"dpll5_ck",	&dpll5_ck,	CK_3430ES2),
 	CLK(NULL,	"dpll5_m2_ck",	&dpll5_m2_ck,	CK_3430ES2),
 	CLK(NULL,	"clkout2_src_ck", &clkout2_src_ck, CK_343X),
@@ -147,7 +147,7 @@ static struct omap_clk omap34xx_clks[] = {
 	CLK(NULL,	"dpll1_fck",	&dpll1_fck,	CK_343X),
 	CLK(NULL,	"mpu_ck",	&mpu_ck,	CK_343X),
 	CLK(NULL,	"arm_fck",	&arm_fck,	CK_343X),
-	CLK(NULL,	"emu_mpu_alwon_ck", &emu_mpu_alwon_ck, CK_343X),
+	CLK("etb",	"emu_mpu_alwon_ck", &emu_mpu_alwon_ck, CK_343X),
 	CLK(NULL,	"dpll2_fck",	&dpll2_fck,	CK_343X),
 	CLK(NULL,	"iva2_ck",	&iva2_ck,	CK_343X),
 	CLK(NULL,	"l3_ick",	&l3_ick,	CK_343X),
@@ -302,7 +302,7 @@ static struct omap_clk omap34xx_clks[] = {
 	CLK("omap-mcbsp.2", "fck",	&mcbsp2_fck,	CK_343X),
 	CLK("omap-mcbsp.3", "fck",	&mcbsp3_fck,	CK_343X),
 	CLK("omap-mcbsp.4", "fck",	&mcbsp4_fck,	CK_343X),
-	CLK(NULL,	"emu_src_ck",	&emu_src_ck,	CK_343X),
+	CLK("etb",	"emu_src_ck",	&emu_src_ck,	CK_343X),
 	CLK(NULL,	"pclk_fck",	&pclk_fck,	CK_343X),
 	CLK(NULL,	"pclkx2_fck",	&pclkx2_fck,	CK_343X),
 	CLK(NULL,	"atclk_fck",	&atclk_fck,	CK_343X),

arch/arm/mach-omap2/emu.c

+/*
+ * emu.c
+ *
+ * ETM and ETB CoreSight components' resources as found in OMAP3xxx.
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ * Alexander Shishkin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexander Shishkin");
+
+/* Cortex CoreSight components within omap3xxx EMU */
+#define ETM_BASE	(L4_EMU_34XX_PHYS + 0x10000)
+#define DBG_BASE	(L4_EMU_34XX_PHYS + 0x11000)
+#define ETB_BASE	(L4_EMU_34XX_PHYS + 0x1b000)
+#define DAPCTL		(L4_EMU_34XX_PHYS + 0x1d000)
+
+static struct amba_device omap3_etb_device = {
+	.dev		= {
+		.init_name = "etb",
+	},
+	.res		= {
+		.start	= ETB_BASE,
+		.end	= ETB_BASE + SZ_4K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	.periphid	= 0x000bb907,
+};
+
+static struct amba_device omap3_etm_device = {
+	.dev		= {
+		.init_name = "etm",
+	},
+	.res		= {
+		.start	= ETM_BASE,
+		.end	= ETM_BASE + SZ_4K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	.periphid	= 0x102bb921,
+};
+
+static int __init emu_init(void)
+{
+	amba_device_register(&omap3_etb_device, &iomem_resource);
+	amba_device_register(&omap3_etm_device, &iomem_resource);
+
+	return 0;
+}
+
+subsys_initcall(emu_init);
+

arch/arm/mach-u300/Makefile

@@ -12,3 +12,4 @@ obj-$(CONFIG_MMC)                 += mmc.o
 obj-$(CONFIG_SPI_PL022)           += spi.o
 obj-$(CONFIG_MACH_U300_SPIDUMMY)  += dummyspichip.o
 obj-$(CONFIG_I2C_STU300)          += i2c.o
+obj-$(CONFIG_REGULATOR_AB3100)    += regulator.o

arch/arm/mach-u300/i2c.c

@@ -9,13 +9,257 @@
  */
 #include <linux/kernel.h>
 #include <linux/i2c.h>
+#include <linux/mfd/ab3100.h>
+#include <linux/regulator/machine.h>
+#include <linux/amba/bus.h>
 #include <mach/irqs.h>
 
+/*
+ * Initial settings of ab3100 registers.
+ * Common for below LDO regulator settings are that
+ * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
+ * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
+ */
+
+/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
+#define LDO_A_SETTING		0x16
+/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_C_SETTING		0x10
+/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
+#define LDO_D_SETTING		0x10
+/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_E_SETTING		0x10
+/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
+#define LDO_E_SLEEP_SETTING	0x00
+/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_F_SETTING		0xD0
+/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_G_SETTING		0x00
+/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
+#define LDO_H_SETTING		0x18
+/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_K_SETTING		0x00
+/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
+#define LDO_EXT_SETTING		0x00
+/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
+#define BUCK_SETTING	0x7D
+/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
+#define BUCK_SLEEP_SETTING	0xAC
+
+static struct regulator_consumer_supply supply_ldo_c[] = {
+	{
+		.dev_name = "ab3100-codec",
+		.supply = "vaudio", /* Powers the codec */
+	},
+};
+
+/*
+ * This one needs to be a supply so we can turn it off
+ * in order to shut down the system.
+ */
+static struct regulator_consumer_supply supply_ldo_d[] = {
+	{
+		.dev = NULL,
+		.supply = "vana15", /* Powers the SoC (CPU etc) */
+	},
+};
+
+static struct regulator_consumer_supply supply_ldo_g[] = {
+	{
+		.dev_name = "mmci",
+		.supply = "vmmc", /* Powers MMC/SD card */
+	},
+};
+
+static struct regulator_consumer_supply supply_ldo_h[] = {
+	{
+		.dev_name = "xgam_pdi",
+		.supply = "vdisp", /* Powers camera, display etc */
+	},
+};
+
+static struct regulator_consumer_supply supply_ldo_k[] = {
+	{
+		.dev_name = "irda",
+		.supply = "vir", /* Power IrDA */
+	},
+};
+
+/*
+ * This is a placeholder for whoever wish to use the
+ * external power.
+ */
+static struct regulator_consumer_supply supply_ldo_ext[] = {
+	{
+		.dev = NULL,
+		.supply = "vext", /* External power */
+	},
+};
+
+/* Preset (hardware defined) voltages for these regulators */
+#define LDO_A_VOLTAGE 2750000
+#define LDO_C_VOLTAGE 2650000
+#define LDO_D_VOLTAGE 2650000
+
+static struct ab3100_platform_data ab3100_plf_data = {
+	.reg_constraints = {
+		/* LDO A routing and constraints */
+		{
+			.constraints = {
+				.name = "vrad",
+				.min_uV = LDO_A_VOLTAGE,
+				.max_uV = LDO_A_VOLTAGE,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+		/* LDO C routing and constraints */
+		{
+			.constraints = {
+				.min_uV = LDO_C_VOLTAGE,
+				.max_uV = LDO_C_VOLTAGE,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_c),
+			.consumer_supplies = supply_ldo_c,
+		},
+		/* LDO D routing and constraints */
+		{
+			.constraints = {
+				.min_uV = LDO_D_VOLTAGE,
+				.max_uV = LDO_D_VOLTAGE,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+				/*
+				 * Actually this is boot_on but we need
+				 * to reference count it externally to
+				 * be able to shut down the system.
+				 */
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_d),
+			.consumer_supplies = supply_ldo_d,
+		},
+		/* LDO E routing and constraints */
+		{
+			.constraints = {
+				.name = "vio",
+				.min_uV = 1800000,
+				.max_uV = 1800000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+		/* LDO F routing and constraints */
+		{
+			.constraints = {
+				.name = "vana25",
+				.min_uV = 2500000,
+				.max_uV = 2500000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+		/* LDO G routing and constraints */
+		{
+			.constraints = {
+				.min_uV = 1500000,
+				.max_uV = 2850000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_g),
+			.consumer_supplies = supply_ldo_g,
+		},
+		/* LDO H routing and constraints */
+		{
+			.constraints = {
+				.min_uV = 1200000,
+				.max_uV = 2750000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_h),
+			.consumer_supplies = supply_ldo_h,
+		},
+		/* LDO K routing and constraints */
+		{
+			.constraints = {
+				.min_uV = 1800000,
+				.max_uV = 2750000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_k),
+			.consumer_supplies = supply_ldo_k,
+		},
+		/* External regulator interface. No fixed voltage specified.
+		 * If we knew the voltage of the external regulator and it
+		 * was connected on the board, we could add the (fixed)
+		 * voltage for it here.
+		 */
+		{
+			.constraints = {
+				.min_uV = 0,
+				.max_uV = 0,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_STATUS,
+			},
+			.num_consumer_supplies = ARRAY_SIZE(supply_ldo_ext),
+			.consumer_supplies = supply_ldo_ext,
+		},
+		/* Buck converter routing and constraints */
+		{
+			.constraints = {
+				.name = "vcore",
+				.min_uV = 1200000,
+				.max_uV = 1800000,
+				.valid_modes_mask = REGULATOR_MODE_NORMAL,
+				.valid_ops_mask =
+				REGULATOR_CHANGE_VOLTAGE |
+				REGULATOR_CHANGE_STATUS,
+				.always_on = 1,
+				.boot_on = 1,
+			},
+		},
+	},
+	.reg_initvals = {
+		LDO_A_SETTING,
+		LDO_C_SETTING,
+		LDO_E_SETTING,
+		LDO_E_SLEEP_SETTING,
+		LDO_F_SETTING,
+		LDO_G_SETTING,
+		LDO_H_SETTING,
+		LDO_K_SETTING,
+		LDO_EXT_SETTING,
+		BUCK_SETTING,
+		BUCK_SLEEP_SETTING,
+		LDO_D_SETTING,
+	},
+};
+
 static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
 	{
 		.type = "ab3100",
 		.addr = 0x48,
 		.irq = IRQ_U300_IRQ0_EXT,
+		.platform_data = &ab3100_plf_data,
 	},
 };
 
@@ -38,6 +282,11 @@ void __init u300_i2c_register_board_devices(void)
 {
 	i2c_register_board_info(0, bus0_i2c_board_info,
 				ARRAY_SIZE(bus0_i2c_board_info));
+	/*
+	 * This makes the core shut down all unused regulators
+	 * after all the initcalls have completed.
+	 */
+	regulator_has_full_constraints();
 	i2c_register_board_info(1, bus1_i2c_board_info,
 				ARRAY_SIZE(bus1_i2c_board_info));
 }

arch/arm/mach-u300/mmc.c

@@ -40,64 +40,6 @@ static unsigned int mmc_status(struct device *dev)
 	return mmci_card->mmc_inserted;
 }
 
-/*
- * Here follows a large chunk of code which will only be enabled if you
- * have both the AB3100 chip mounted and the MMC subsystem activated.
- */
-
-static u32 mmc_translate_vdd(struct device *dev, unsigned int voltage)
-{
-	int v;
-
-	/*
-	 * MMC Spec:
-	 * bit 7:	1.70 - 1.95V
-	 * bit 8 - 14:	2.0 - 2.6V
-	 * bit 15 - 23:	2.7 - 3.6V
-	 *
-	 * ab3100 voltages:
-	 * 000 - 2.85V
-	 * 001 - 2.75V
-	 * 010 - 1.8V
-	 * 011 - 1.5V
-	 */
-	switch (voltage) {
-	case 8:
-		v = 3;
-		break;
-	case 9:
-	case 10:
-	case 11:
-	case 12:
-	case 13:
-	case 14:
-	case 15:
-		v = 1;
-		break;
-	case 16:
-		v = 1;
-		break;
-	case 17:
-	case 18:
-	case 19:
-	case 20:
-	case 21:
-	case 22:
-	case 23:
-	case 24:
-		v = 0;
-		break;
-	default:
-		v = 0;
-		break;
-	}
-
-	/* PL180 voltage register bits */
-	return v << 2;
-}
-
-
-
 static int mmci_callback(void *data)
 {
 	struct mmci_card_event *mmci_card = data;
@@ -154,9 +96,11 @@ int __devinit mmc_init(struct amba_device *adev)
 	if (!mmci_card)
 		return -ENOMEM;
 
+	/*
+	 * Do not set ocr_mask or voltage translation function,
+	 * we have a regulator we can control instead.
+	 */
 	/* Nominally 2.85V on our platform */
-	mmci_card->mmc0_plat_data.ocr_mask = MMC_VDD_28_29;
-	mmci_card->mmc0_plat_data.translate_vdd = mmc_translate_vdd;
 	mmci_card->mmc0_plat_data.status = mmc_status;
 	mmci_card->mmc0_plat_data.gpio_wp = -1;
 	mmci_card->mmc0_plat_data.gpio_cd = -1;

arch/arm/mach-u300/regulator.c

+/*
+ * arch/arm/mach-u300/regulator.c
+ *
+ * Copyright (C) 2009 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ * Handle board-bound regulators and board power not related
+ * to any devices.
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ */
+#include <linux/device.h>
+#include <linux/signal.h>
+#include <linux/err.h>
+#include <linux/regulator/consumer.h>
+/* Those are just for writing in syscon */
+#include <linux/io.h>
+#include <mach/hardware.h>
+#include <mach/syscon.h>
+
+/*
+ * Regulators that power the board and chip and which are
+ * not copuled to specific drivers are hogged in these
+ * instances.
+ */
+static struct regulator *main_power_15;
+
+/*
+ * This function is used from pm.h to shut down the system by
+ * resetting all regulators in turn and then disable regulator
+ * LDO D (main power).
+ */
+void u300_pm_poweroff(void)
+{
+	sigset_t old, all;
+
+	sigfillset(&all);
+	if (!sigprocmask(SIG_BLOCK, &all, &old)) {
+		/* Disable LDO D to shut down the system */
+		if (main_power_15)
+			regulator_disable(main_power_15);
+		else
+			pr_err("regulator not available to shut down system\n");
+		(void) sigprocmask(SIG_SETMASK, &old, NULL);
+	}
+	return;
+}
+
+/*
+ * Hog the regulators needed to power up the board.
+ */
+static int __init u300_init_boardpower(void)
+{
+	int err;
+	u32 val;
+
+	pr_info("U300: setting up board power\n");
+	main_power_15 = regulator_get(NULL, "vana15");
+	if (IS_ERR(main_power_15)) {
+		pr_err("could not get vana15");
+		return PTR_ERR(main_power_15);
+	}
+	err = regulator_enable(main_power_15);
+	if (err) {
+		pr_err("could not enable vana15\n");
+		return err;
+	}
+
+	/*
+	 * On U300 a special system controller register pulls up the DC
+	 * until the vana15 (LDO D) regulator comes up. At this point, all
+	 * regulators are set and we do not need power control via
+	 * DC ON anymore. This function will likely be moved whenever
+	 * the rest of the U300 power management is implemented.
+	 */
+	pr_info("U300: disable system controller pull-up\n");
+	val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMCR);
+	val &= ~U300_SYSCON_PMCR_DCON_ENABLE;
+	writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMCR);
+
+	/* Register globally exported PM poweroff hook */
+	pm_power_off = u300_pm_poweroff;
+
+	return 0;
+}
+
+/*
+ * So at module init time we hog the regulator!
+ */
+module_init(u300_init_boardpower);

arch/arm/mach-ux500/Kconfig

+menu "ST-Ericsson platform type"
+	depends on ARCH_U8500
+
+comment "ST-Ericsson Multicore Mobile Platforms"
+
+config MACH_U8500_MOP
+	bool "U8500 Early Development platform"
+	default y
+	select ARM_GIC
+	select HAS_MTU
+	help
+	  Include support for mop500 development platform
+	  based on U8500 architecture. The platform is based
+	  on early drop silicon version of 8500.
+endmenu

arch/arm/mach-ux500/Makefile

+#
+# Makefile for the linux kernel, U8500 machine.
+#
+
+obj-y				:= clock.o
+obj-$(CONFIG_ARCH_U8500)	+= cpu-u8500.o
+obj-$(CONFIG_MACH_U8500_MOP)	+= board-mop500.o
+obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o localtimer.o

arch/arm/mach-ux500/Makefile.boot

+   zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+initrd_phys-y	:= 0x00800000
+

arch/arm/mach-ux500/board-mop500.c

+/*
+ * Copyright (C) 2008-2009 ST-Ericsson
+ *
+ * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/pl022.h>
+#include <linux/spi/spi.h>
+
+#include <asm/localtimer.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+#include <plat/mtu.h>
+
+#include <mach/hardware.h>
+#include <mach/setup.h>
+
+#define __MEM_4K_RESOURCE(x) \
+	.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
+
+/* These are active devices on this board */
+static struct amba_device uart0_device = {
+	.dev = { .init_name = "uart0" },
+	__MEM_4K_RESOURCE(U8500_UART0_BASE),
+	.irq = {IRQ_UART0, NO_IRQ},
+};
+
+static struct amba_device uart1_device = {
+	.dev = { .init_name = "uart1" },
+	__MEM_4K_RESOURCE(U8500_UART1_BASE),
+	.irq = {IRQ_UART1, NO_IRQ},
+};
+
+static struct amba_device uart2_device = {
+	.dev = { .init_name = "uart2" },
+	__MEM_4K_RESOURCE(U8500_UART2_BASE),
+	.irq = {IRQ_UART2, NO_IRQ},
+};
+
+static void ab4500_spi_cs_control(u32 command)
+{
+	/* set the FRM signal, which is CS  - TODO */
+}
+
+struct pl022_config_chip ab4500_chip_info = {
+	.lbm = LOOPBACK_DISABLED,
+	.com_mode = INTERRUPT_TRANSFER,
+	.iface = SSP_INTERFACE_MOTOROLA_SPI,
+	/* we can act as master only */
+	.hierarchy = SSP_MASTER,
+	.slave_tx_disable = 0,
+	.endian_rx = SSP_RX_MSB,
+	.endian_tx = SSP_TX_MSB,
+	.data_size = SSP_DATA_BITS_24,
+	.rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
+	.tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
+	.clk_phase = SSP_CLK_SECOND_EDGE,
+	.clk_pol = SSP_CLK_POL_IDLE_HIGH,
+	.cs_control = ab4500_spi_cs_control,
+};
+
+static struct spi_board_info u8500_spi_devices[] = {
+	{
+		.modalias = "ab4500",
+		.controller_data = &ab4500_chip_info,
+		.max_speed_hz = 12000000,
+		.bus_num = 0,
+		.chip_select = 0,
+		.mode = SPI_MODE_0,
+		.irq = IRQ_AB4500,
+	},
+};
+
+static struct pl022_ssp_controller ssp0_platform_data = {
+	.bus_id = 0,
+	/* pl022 not yet supports dma */
+	.enable_dma = 0,
+	/* on this platform, gpio 31,142,144,214 &
+	 * 224 are connected as chip selects
+	 */
+	.num_chipselect = 5,
+};
+
+static struct amba_device pl022_device = {
+	.dev = {
+		.coherent_dma_mask = ~0,
+		.init_name = "pl022",
+		.platform_data = &ssp0_platform_data,
+	},
+	.res = {
+		.start = U8500_SSP0_BASE,
+		.end   = U8500_SSP0_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	.irq = {IRQ_SSP0, NO_IRQ },
+	/* ST-Ericsson modified id */
+	.periphid = SSP_PER_ID,
+};
+
+static struct amba_device *amba_devs[] __initdata = {
+	&uart0_device,
+	&uart1_device,
+	&uart2_device,
+	&pl022_device,
+};
+
+static void __init u8500_timer_init(void)
+{
+#ifdef CONFIG_LOCAL_TIMERS
+	/* Setup the local timer base */
+	twd_base = __io_address(U8500_TWD_BASE);
+#endif
+	/* Setup the MTU base */
+	mtu_base = __io_address(U8500_MTU0_BASE);
+
+	nmdk_timer_init();
+}
+
+static struct sys_timer u8500_timer = {
+	.init	= u8500_timer_init,
+};
+
+static void __init u8500_init_machine(void)
+{
+	int i;
+
+	/* Register the active AMBA devices on this board */
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
+		amba_device_register(amba_devs[i], &iomem_resource);
+
+	spi_register_board_info(u8500_spi_devices,
+			ARRAY_SIZE(u8500_spi_devices));
+
+	u8500_init_devices();
+}
+
+MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
+	/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
+	.phys_io	= U8500_UART2_BASE,
+	.io_pg_offst	= (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
+	.boot_params	= 0x100,
+	.map_io		= u8500_map_io,
+	.init_irq	= u8500_init_irq,
+	/* we re-use nomadik timer here */
+	.timer		= &u8500_timer,
+	.init_machine	= u8500_init_machine,
+MACHINE_END

arch/arm/mach-ux500/clock.c

+/*
+ *  Copyright (C) 2009 ST-Ericsson
+ * 	heavily based on realview platform
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/mutex.h>
+
+#include <asm/clkdev.h>
+
+/* currently the clk structure
+ * just supports rate. This would
+ * be extended as and when new devices are
+ * added - TODO
+ */
+struct clk {
+	unsigned long		rate;
+};
+
+int clk_enable(struct clk *clk)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+	/*TODO*/
+	return rate;
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	clk->rate = rate;
+	return 0;
+}
+EXPORT_SYMBOL(clk_set_rate);
+
+/* ssp clock */
+static struct clk ssp_clk = {
+	.rate = 48000000,
+};
+
+/* fixed clock */
+static struct clk f38_clk = {
+	.rate = 38400000,
+};
+
+static struct clk_lookup lookups[] = {
+	{
+		/* UART0 */
+		.dev_id		= "uart0",
+		.clk		= &f38_clk,
+	}, {	/* UART1 */
+		.dev_id		= "uart1",
+		.clk		= &f38_clk,
+	}, {	/* UART2 */
+		.dev_id		= "uart2",
+		.clk		= &f38_clk,
+	}, {	/* SSP */
+		.dev_id		= "pl022",
+		.clk		= &ssp_clk,
+	}
+};
+
+static int __init clk_init(void)
+{
+	int i;
+
+	/* register the clock lookups */
+	for (i = 0; i < ARRAY_SIZE(lookups); i++)
+		clkdev_add(&lookups[i]);
+	return 0;
+}
+arch_initcall(clk_init);

arch/arm/mach-ux500/include/mach/clkdev.h

+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif