Latest Samsung SoCs have one or more PL330 as their DMACs. This patch
implements the S3C DMA API for PL330 core driver.

The design has been kept as generic as possible while keeping effort to
add support for new SoCs to the minimum possible level.

Some of the salient features of this driver are:-
 o  Automatic scheduling of client requests onto DMAC if more than
    one DMAC can reach the peripheral. Factors, such as current load
    and number of exclusive but inactive peripherals that are
    supported by the DMAC, are used to decide suitability of a DMAC
    for a particular client.
 o  CIRCULAR buffer option is supported.
 o  The driver scales transparently with the number of DMACs and total
    peripherals in the platform, since all peripherals are added to
    the peripheral pool and DMACs to the controller pool.

For most conservative use of memory, smallest driver size and best
performance, we don't employ legacy data structures of the S3C DMA API.
That should not have any affect since those data structures are completely
invisible to the DMA clients.
Signed-off-by: NJassi Brar <jassi.brar@samsung.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

MUSB can supply upto 500mA such as, AM3517 and OMAP3EVM Rev >=E and thus
the 'power' field has to hold values above 255.
Signed-off-by: NAjay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The switch to using GPIOLIB broke the sd/mmc card detection on the
RealView development boards if GPIO_PL061 was not selected.
This patch selects GPIO_PL061 if GPIOLIB is selected.
The sense of the return value from mmc_status has also changed
and is corrected.
Signed-off-by: NColin Tuckley <colin.tuckley@arm.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

They are not needed and add over 512 bytes to kernel data.
Signed-off-by: NAaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Old code from original patch contains beagle board pins that are
not available on the Devkit8000.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Change position of calling serial and ethernet initialization.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Remove include otg.h.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Replace wrong sdr_cke[01] with sdrc_cke[01].
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Devkit8000 uses the CUS package for OMAP3530.

This patch adds missing package selection for CUS and enables
CONFIG_MUX.

Replace whitespace with tab in Kconfig.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Replace wrong vdss_dsi with vdds_dsi.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/configs/n8x0_defconfig:1061:warning: override: reassigning to
symbol NILFS2_FS
Signed-off-by: NFrancisco Alecrim <francisco.alecrim@openbossa.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Corrected type of flash in output (OneNAND => NOR).
Removed whitespace after newline in output.
Removed double whitespace in output.
Signed-off-by: NThomas Weber <weber@corscience.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch fixes the McBSP4 base address for OMAP4
Signed-off-by: NBalaji T K <balajitk@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Modern udev will not work with the CONFIG_SYSFS_DEPRECATED*=y options and
it seems also that the Maemo release works without when testing with the
Maemo 2.6.28 kernel.
Signed-off-by: NJarkko Nikula <jhnikula@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Phonet is enabled by the commit bce54fed
and this duplicate gives a warning when doing make rx51_defconfig.
Signed-off-by: NJarkko Nikula <jhnikula@gmail.com>
Acked-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

If gpmc_t isn't given, we don't need to set timing for gpmc, or it will cause
a Oops.
Signed-off-by: NStanley.Miao <stanley.miao@windriver.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The initialize of i2c subsystem will set pinmux, so it should be done
after the initialize of mux subsystem initialization.
Signed-off-by: NStanley.Miao <stanley.miao@windriver.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

INT_34XX_BENCH_MPU_EMUL was defined twice, another is at Line 312.
Signed-off-by: NStanley.Miao <stanley.miao@windriver.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

If CONFIG_MTD_NAND_OMAP2 is not enabled, there will be a compile error,
"gpmc_nand_init() is not defined". Add a inline noop function to fix it.
Signed-off-by: NStanley.Miao <stanley.miao@windriver.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Change the name for the spi instances on omap44xx_clks to match
the names omap2 spi driver gives:

omap-mcspi.1 -> omap2_mcspi.1
omap-mcspi.2 -> omap2_mcspi.2
omap-mcspi.3 -> omap2_mcspi.3
omap-mcspi.4 -> omap2_mcspi.4
Signed-off-by: NAbraham Arce <x0066660@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Disable the nonexistent ehci port on Devkit8000.
Signed-off-by: NThomas Weber <weber@corscience.de>
Acked-by: NAnand Gadiyar <gadiyar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch fixes the base address of CONTROL register on OMAP4430SDP.
The control base is used by peripherals like MMC1 for PBIAS configuration.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NKishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch fixes HSMMC Controller5 IRQ Base.
Signed-off-by: NKishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

IGEP v2 uses EHCI port 1 instead of EHCI port 2.
Signed-off-by: NEnric Balletbo i Serra <eballetbo@iseebcn.com>
Acked-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Fix warning: 'return' with a value, in function returning void
in n8x0_mmc_init. Also fix a search and replace typo.
Signed-off-by: NTony Lindgren <tony@atomide.com>

The value to check is 7 for V6 instead. The code has been
working as it falls through to 24xx code if the other checks
fail.
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch adds  argument to smc calls as gcc-4.4.1 requires it
otherwise the build breaks with 2009-q3 toolchanin.

arch/arm/mach-omap2/omap-headsmp.S: Assembler messages:
arch/arm/mach-omap2/omap-headsmp.S:36: Error: missing expression -- `smc'
arch/arm/mach-omap2/omap-headsmp.S:55: Error: missing expression -- `smc'
arch/arm/mach-omap2/omap-headsmp.S:63: Error: missing expression -- `smc'
make[1]: *** [arch/arm/mach-omap2/omap-headsmp.o] Error 1
Signed-off-by: NRichard Woodruff <r-woodruff2@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The register DMA4_CDAC needs to be initialized to zero
before starting DMA transfer.

Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Govindraj R <govindraj.raja@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Reported-by: NS, Venkatraman <svenkatr@ti.com>
Signed-off-by: NManjunatha GK <manjugk@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Since IRQ_TYPE_EDGE_BOTH is defined as (IRQ_TYPE_EDGE_FALLING |
IRQ_TYPE_EDGE_RISING), testing against it with a bitwise AND also matches
both single-edge cases in addition to the intended both edges case. Fix it,
replacing with a more accurate expression.

Created and tested againts linux-2.6.34-rc3.
Applicable to 2.6.33-stable as well.
Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Trivial patch, no functional changes
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

When the 32k sync timer is used for sched_clock(), it should count
time from the kernel boot (clocksource init) instead of the last HW
reset. Otherwise printk.time values will jump suddenly during the boot:

	[    0.000000] calling  omap2_clk_arch_init+0x0/0x138 @ 1
	[    0.000000] initcall omap2_clk_arch_init+0x0/0x138 returned -22 after 0 usecs
	[    0.000000] initcall omap2_clk_arch_init+0x0/0x138 returned with error code -22
	[    0.000000] calling  omap_init_clocksource_32k+0x0/0x98 @ 1
	[  508.697937] initcall omap_init_clocksource_32k+0x0/0x98 returned 0 after 0 usecs
	[  508.697967] calling  omap_init_devices+0x0/0x38 @ 1
	[  508.698425] initcall omap_init_devices+0x0/0x38 returned 0 after 0 usecs

This will confuse tools such as scripts/bootgraph.pl.
Signed-off-by: NAaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

update bcmring_defconfig to the latest kernel version, this will fix the
KAutobuild error.
Signed-off-by: NLeo Hao Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

/tmp/ccJ3ssZW.s: Assembler messages:
/tmp/ccJ3ssZW.s:1952: Error: can't resolve `.text' {.text section} - `.LFB1077'

This is caused because:

	.section .data
	.section .text
	.section .text
	.previous

does not return us to the .text section, but the .data section; this
makes use of .previous dangerous if the ordering of previous sections
is not known.

Fix up the other users of .previous; .pushsection and .popsection are
a safer pairing to use than .section and .previous.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Cosmetic change to mach-at91 Makefile: remove two blanks introduced
by earlier patches.
Signed-off-by: NErnst Schwab <eschwab@online.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

When crash happens in interrupt context there is no userspace context.
We always use current->active_mm in those cases.
Signed-off-by: NMika Westerberg <ext-mika.1.westerberg@nokia.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

From: Imre Deak <imre.deak@nokia.com>

Signal handlers can use floating point, so prevent them to corrupt
the main thread's VFP context. So far there were two signal stack
frame formats defined based on the VFP implementation, but the user
struct used for ptrace covers all posibilities, so use it for the
signal stack too.

Introduce also a new user struct for VFP exception registers. In
this too fields not relevant to the current VFP architecture are
ignored.

Support to save / restore the exception registers was added by
Will Deacon.
Signed-off-by: NImre Deak <imre.deak@nokia.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

From: Imre Deak <imre.deak@nokia.com>

Recently the UP versions of these functions were refactored and as
a side effect it became possible to call them for the current thread.
This isn't true for the SMP versions however, so fix this up.
Signed-off-by: NImre Deak <imre.deak@nokia.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The VIVT cache of a highmem page is always flushed before the page
is unmapped.  This cache flush is explicit through flush_cache_kmaps()
in flush_all_zero_pkmaps(), or through __cpuc_flush_dcache_area() in
kunmap_atomic().  There is also an implicit flush of those highmem pages
that were part of a process that just terminated making those pages free
as the whole VIVT cache has to be flushed on every task switch. Hence
unmapped highmem pages need no cache maintenance in that case.

However unmapped pages may still be cached with a VIPT cache because the
cache is tagged with physical addresses.  There is no need for a whole
cache flush during task switching for that reason, and despite the
explicit cache flushes in flush_all_zero_pkmaps() and kunmap_atomic(),
some highmem pages that were mapped in user space end up still cached
even when they become unmapped.

So, we do have to perform cache maintenance on those unmapped highmem
pages in the context of DMA when using a VIPT cache.  Unfortunately,
it is not possible to perform that cache maintenance using physical
addresses as all the L1 cache maintenance coprocessor functions accept
virtual addresses only.  Therefore we have no choice but to set up a
temporary virtual mapping for that purpose.

And of course the explicit cache flushing when unmapping a highmem page
on a system with a VIPT cache now can go, which should increase
performance.

While at it, because the code in __flush_dcache_page() has to be modified
anyway, let's also make sure the mapped highmem pages are pinned with
kmap_high_get() for the duration of the cache maintenance operation.
Because kunmap() does unmap highmem pages lazily, it was reported by
Gary King <GKing@nvidia.com> that those pages ended up being unmapped
during cache maintenance on SMP causing segmentation faults.
Signed-off-by: NNicolas Pitre <nico@marvell.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

From: Julien Langer <julien.langer@gmail.com>

AT91: when turning off the PLLs during suspend, don't wait for the lock
flag to be set. Previously the code would always run into the loop
limitation of 1000 iterations because the flag is never set when turning
the PLLs off.

Comments from Anders Larsen:

 (in http://marc.info/?l=linux-kernel&m=127058929724193&w=2)
Signed-off-by: NJulien Langer <julien.langer@gmail.com>
Signed-off-by: NAnders Larsen <al@alarsen.net>
Acked-by: NAndrew Victor <linux@maxim.org.za>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Write combining/cached device mappings are not setting the shared bit,
which could potentially cause problems on SMP systems since the cache
lines won't participate in the cache coherency protocol.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Tested-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>