DISPC DMA can, in certain conditions, underflow which will trigger an error
condition and halt the graphics pipeline. The only way to recover from
this would be to reset the related HW modules, which would abort the
current transfer and cause unwanted visual side-effects. The problem
arises mainly when enabling multiple planes with higher resolutions.

The arbitration priority of the DISPC DMA cannot be raised higher, thus -
so far - the only workaround is to keep the DMA FIFO full as much as
possible to minimize the risk of it being totally drained. The patch does
this for external LCD controllers connected to RFBI, where the new FIFO
setting doesn't degrade power consumption significantly.
Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Currently, IDLETIMER timer routine calls kobject_uevent, which might sleep.
Since we are in interrupt context, we now schedule a work when the timer
expires. This calls sysfs_notify() for notifying userspace.
Signed-off-by: Samuel Ortiz <samuel.ortiz@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

In ipt_IDLETIMER.c, we are using an old prototype for xt_target hooks. We need
to pass one additional argument, a pointer to xt_target.
We also need to specify the targetsize value, otherwise registration fails.
Signed-off-by: Samuel Ortiz <samuel.ortiz@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Signed-off-by: Kevin Hilman <khilman@deeprooted.net>

Signed-off-by: Samuel Ortiz <samuel.ortiz@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

When filtering is disabled the driver will ignore all samples and
never detect the pen up event.
Signed-off-by: Imre Deak <imre.deak@nokia.com>

Various fixes for the OHCI OMAP glue:

 - Properly use the usbcore HCD lifecycle entry points

 - Remove calls to non-exported usbcore routines.

 - Stop inappropriate export of some bus glue calls

Plus remove some extra whitespace.

Fix warnings

WARNING: drivers/pcmcia/omap_cf.o - Section mismatch:
reference to .init.text: from .data between '' (at offset
0x80) and 'omap_cf_ops'

WARNING: sound/arm/omap/snd-omap-alsa-aic23.o - Section
mismatch: reference to .init.text: from .data between ''
(at offset 0x68) and 'aic23_hw_constraints_rates'

Signed-off-by: Dirk Behme <dirk.behme_at_gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Fix GPMC_CS_CONFIG1 writing and typos
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Samuel Ortiz <samuel.ortiz@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Signed-off-by: Samuel Ortiz <samuel.ortiz@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Fixes compilation errors on OMAP1.
Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

- replace custom debugging stuff with the default kernel one
- pass a pointer to the LCD object instance to member functions
- rename lcd_lph8923 to the more generic lcd_mipid
- use SPI_MODE_1 instead of SPI_MODE_0 in lcd_mipid
- add ESD spike recovery support to lcd_mipid
Signed-off-by: Imre Deak <ext-imre.deak@nokia.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

- Support for
        - overlays through separate /dev/fbX nodes
        - scaling and color space conversion
        - per-plane memory configuration either in SRAM or SDRAM

- Replace custom debug stuff with the default kernel one
Signed-off-by: Imre Deak <ext-imre.deak@nokia.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

- OMAP ATAG changes:
        FBMEM - support for per plane memory configurations
        LCD   -  add data_lines, reset GPIO line params

- FB memory configuration:
        Support for per-plane memory configurations with FB location
        either in SRAM or SDRAM.

- DMA consistent memory size:
        Make the ARM DMA consistent memory size overridable. The default
        is 2MB, but for larger frame buffers we may need more. Kconfig
        option is added in the next patch.
Signed-off-by: Imre Deak <ext-imre.deak@nokia.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Multiplexing for 24xx GPMC wait pin monitoring
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Kevin Hilman <khilman@deeprooted.net>

Signed-off-by: Kevin Hilman <khilman@deeprooted.net>

MT_MEMORY is needed in order to execute code in SRAM. Also
need to use section mapping.

Based on a patch by Richard Woodruff.
Signed-off-by: Tony Lindgren <tony@atomide.com>

Use gpmc_cs_get_base_addr for H4 smc91x
Signed-off-by: Komal Shah <komal_shah802003@yahoo.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Use gpmc_cs_get_base_addr for H4 smc91x
Signed-off-by: Komal Shah <komal_shah802003@yahoo.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

On OMAP2420, when running MPU at high frequencies, dmtimers need to
have a longer delay for the new functional clock to be active.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Sprinkle dev_dbg's wrapped with VERBOSE to several functions to aid
debugging.
Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

- Initialize timer outside of spinlock to reduce the time the spinlock is held
- Do clk_get to the source clocks during initialization to avoid sleeping later
- New function to set counter register
Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Since the mutex protecting the clock list is static, the list
itself should be too.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Also removed unused ochi_omap_host_enable() function.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

It is now possible to dynamically set VMEM, VIO, VDCDC2 and VDCDC3.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

Being named "Crazed Snow-Weasel" instills a lot of confidence in this
release, so I'm sure this will be one of the better ones.

Reflect the fact that the Cell Broadband Engine supports 64k
pages by adding the bit to the CPU features.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The page size encoding passed to tlbie is incorrect for new-style
large pages.  This fixes it.  This doesn't affect anything on older
machines because mmu_psize_defs[psize].penc (the page size encoding)
is 0 for 4k and 16M pages (the two are distinguished by a separate "is
a large page" bit).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arm_timer() checks PF_EXITING to prevent BUG_ON(->exit_state)
in run_posix_cpu_timers().

However, for some reason it does so only for CPUCLOCK_PERTHREAD
case (which is imho wrong).

Also, this check is not reliable, PF_EXITING could be set on
another cpu without any locks/barriers just after the check,
so it can't prevent from attaching the timer to the exiting
task.

The previous patch makes this check unneeded.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

do_exit() clears ->it_##clock##_expires, but nothing prevents
another cpu to attach the timer to exiting process after that.
arm_timer() tries to protect against this race, but the check
is racy.

After exit_notify() does 'write_unlock_irq(&tasklist_lock)' and
before do_exit() calls 'schedule() local timer interrupt can find
tsk->exit_state != 0. If that state was EXIT_DEAD (or another cpu
does sys_wait4) interrupted task has ->signal == NULL.

At this moment exiting task has no pending cpu timers, they were
cleanuped in __exit_signal()->posix_cpu_timers_exit{,_group}(),
so we can just return from irq.

John Stultz recently confirmed this bug, see

	http://marc.theaimsgroup.com/?l=linux-kernel&m=115015841413687Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>