with while (i++ < MAX_CLOCK_ENABLE_WAIT); i can reach MAX_CLOCK_ENABLE_WAIT + 1
after the loop, so if (i == MAX_CLOCK_ENABLE_WAIT) that's still success.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

Correspondence with the TI OMAP hardware team indicates that
SDRC_DLLA_CTRL.FIXEDDELAY should be initialized to 0x0f.  This number
was apparently derived from process validation.  This is only used
when the SDRC DLL is unlocked (e.g., SDRC clock frequency less than
83MHz).
Signed-off-by: Paul Walmsley <paul@pwsan.com>

Previously only 1 and 2 was supported. This is needed for DVFS VDD2 control.
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>

Convert omap3_sram_configure_core_dpll() to use macros rather than
magic numbers.
Signed-off-by: Paul Walmsley <paul@pwsan.com>

Clean up comments and copyrights on the CORE DPLL3 M2 divider change code.
Signed-off-by: Paul Walmsley <paul@pwsan.com>

Program the SDRC_MR_0 register as well during SDRC clock changes.
This register allows selection of the memory CAS latency.  Some SDRAM
chips, such as the Qimonda HYB18M512160AF6, have a lower CAS latency
at lower clock rates.
Signed-off-by: Paul Walmsley <paul@pwsan.com>

When changing the SDRAM clock from 166MHz to 83MHz via the CORE DPLL M2
divider, add a short delay before returning to SDRAM to allow the SDRC
time to stabilize.  Without this delay, the system is prone to random
panics upon re-entering SDRAM.

This time delay varies based on MPU frequency.  At 500MHz MPU frequency at
room temperature, 64 loops seems to work okay; so add another 32 loops for
environmental and process variation.
Signed-off-by: Paul Walmsley <paul@pwsan.com>

On the OMAP3, initialize SDRC timings when the kernel boots.  This ensures
that the kernel is running with known, optimized SDRC timings, rather than
whatever was configured by the bootloader.
Signed-off-by: Paul Walmsley <paul@pwsan.com>

The original CDP kernel that this code comes from waited for 0x800
loops after switching the CORE DPLL M2 divider.  This does not appear
to be necessary.
Signed-off-by: Paul Walmsley <paul@pwsan.com>

This patch supports the cache handling for some old Feroceon cores for
which the CPU ID is like 0x41159260.  This is a complement to
commit ab6d15d5.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

When a kthread function returns, it branches to do_exit(). However, the
unwinding information isn't valid anymore and any stack trace caused by
do_exit() may be incorrect. This patch adds a kernel_thread_exit()
function and annotated with '.cantunwind' so that the unwinder stops
when reaching it.
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

There are situations where the unwinder goes beyond stack boundaries and
unwinds random data. This patch moves the stack boundaries check after
the unwind_exec_insn() call and adds an extra check for possible
infinite loops (like "mov pc, lr" with pc == lr).

The patch also fixes a bug in the unwind instructions interpreter. The
0xb0 instruction can only set PC to LR if this wasn't already set by
a previous instruction (this is used on exceptions taken while in kernel
mode where svc_entry is annotated with ".save {r0 - pc}").
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Not discarding these sections when hotplug isn't available prevents the
kernel from building.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

From: Min Zhang <mzhang@mvista.com>

Add alignment fault fixup support for 32-bit Thumb-2 LDM, LDRD, POP,
PUSH, STM and STRD instructions.  Alignment fault fixup support for
the remaining 32-bit Thumb-2 load/store instruction cases is not
included since ARMv6 and later processors include hardware support
for loads and stores of unaligned words and halfwords.
Signed-off-by: Min Zhang <mzhang@mvista.com>
Signed-off-by: George G. Davis <gdavis@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

The cpu member of struct irq_desc was recently renamed to node. The
patch renames the ARM references to the old member.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

This header file is needed for twd_base.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel

ia64 was assigning resources to root busses after allocations had
been made for child busses.  Calling pcibios_setup_root_windows() from
pcibios_fixup_bus() solves this problem by assigning the resources to
the root bus before child busses are scanned.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Instead of open-coding pci_find_parent_resource and request_resource,
just call pci_claim_resource.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This function was only used by pci_claim_resource(), and the last commit
deleted that use.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Instead of starting from the iomem or ioport roots, start from the
parent bus' resources.  This fixes a bug where child resources would
appear above their parents resources if they had the same size.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Convert ia64 to use int-ll64.h
  [IA64] Fix build error in paravirt_patchlist.c
  [IA64] ia64 does not need umount2() syscall
  [IA64] hook up new rt_tgsigqueueinfo syscall
  [IA64] msi_ia64.c dmar_msi_type should be static
  [IA64] remove obsolete hw_interrupt_type
  [IA64] remove obsolete irq_desc_t typedef
  [IA64] remove obsolete no_irq_type
  [IA64] unexport fpswa.h

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: early init for MFD running regulators
  mfd: fix tmio related warnings
  mfd: asic3: enable SD/SDIO cell
  mfd: asic3: enable DS1WM cell
  mfd: asic3: remove SD/SDIO controller register definitions
  mfd: asic3: use resource_size macro instead of local variable
  mfd: add ASIC3 IRQ numbers
  mfd: asic3: add clock handling for MFD cells
  mfd: asic3: add asic3_set_register common operation
  mfd: Fix Kconfig help text for WM8350
  mfd: add PCAP driver
  mfd: add U300 AB3100 core support
  drivers/mfd: remove obsolete irq_desc_t typedef
  mfd/pcf50633-gpio.c: add MODULE_LICENSE
  mfd: Mark WM8350 mask revision as readable to match silicon
  mfd: Mark clocks_init as non-init in twl4030-core.c
  mfd: Correct readability of WM8350 register 227

* 'kmemleak' of git://linux-arm.org/linux-2.6:
  kmemleak: Fix some typos in comments
  kmemleak: Rename kmemleak_panic to kmemleak_stop
  kmemleak: Only use GFP_KERNEL|GFP_ATOMIC for the internal allocations

For MFDs running regulator cores, we really want them to be brought up early
during boot.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Mike Rapoport <mike@compulab.co.il>

We can not have .driver_data as const since platform_set_drvdata() doesnt take
a const.
The hclk mmc_data field can be const though.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This enables the ASIC3's SD/SDIO MFD cell, supported by the tmio_mmc driver.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This enables the ASIC3's DS1WM MFD cell, supported by the ds1wm driver.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Only the base addresses remain, as they are needed to set up
the IOMEM resources.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This should make the code a little bit easier to read.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

IRQ number definitions for PWM, LED, SPI and OWM (ds1wm).
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Since ASIC3 has to work on both PXA and S3C and since their
struct clk implementations differ, we can't register out
clocks with the clkdev mechanism (yet?).
For now we have to keep clock handling internal to this
driver and enable/disable the clocks via the
mfd_cell->enable/disable functions.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Used to configure single bits of the SDHWCTRL_SDCONF and EXTCF_RESET/SELECT
registers needed for DS1WM, MMC/SDIO and PCMCIA functionality.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

More with the grammar.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

The PCAP Asic as present on EZX phones is a multi function device with
voltage regulators, ADC, touch screen controller, RTC, USB transceiver,
leds controller, and audio codec.

It has two SPI ports, typically one is connected to the application
processor and another to the baseband, this driver provides read/write
functions to its registers, irq demultiplexer and ADC
queueing/abstraction.

This chip is used on a lot of Motorola phones, it was manufactured by TI
as a custom product with the name PTWL93017, later this design evolved
into the ATLAS PMIC from Freescale (MC13783).
Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

This adds a core driver for the AB3100 mixed-signal circuit
found in the ST-Ericsson U300 series platforms. This driver
is a singleton proxy for all accesses to the AB3100
sub-drivers which will be merged on top of this one, RTC,
regulators, battery and system power control, vibrator,
LEDs, and an ALSA codec.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Reviewed-by: Mike Rapoport <mike@compulab.co.il>
Reviewed-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have
been kept around for migration reasons.  After more than two years it's
time to remove them finally.

This patch cleans up one of the remaining users.  When all such patches
hit mainline we can remove the defines and typedefs finally.

Impact: cleanup

Convert the last remaining users and remove the typedef.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>