OMAP: DSS2: Fix callback completion issue in mgr->blank

Uncommitted callbacks were not completed yet eclipsed in mgr->blank.

Also fixed mgr index in ECLIPSED_CACHE callback.
This patch is co-authored with Muralidhar Dixit <murali.dixit@ti.com>

Change-Id: Ia20b79e9a6308441423d9900469e0c4adfc30eee
Signed-off-by: Lajos Molnar <lajos@ti.com>
Signed-off-by: Muralidhar Dixit <murali.dixit@ti.com>
OMAP4: DSS: Fix to correct the manager index for VSYNC irq handler

Patch to fix the Manager id in dss_completion_irq_handler.
DSSCOMP is expecting the manager id 1 to be mapped to HDMI display.
This patch fixes the DSSCOMP_STATE_DISPLAYED callback in DSSCOMP.

Change-Id: I0aab3e494cb305d75a64fabc4cd6919def636285
Signed-off-by: Muralidhar Dixit <murali.dixit@ti.com>
Signed-off-by: Varadarajan Charulatha <charu@ti.com>
OMAPDSS: DSSCOMP: export needed functions for PVR SGX

OMAPDSS: DSSCOMP: export needed functions for PVR SGX

Make dsscomp symbol visible to kernel modules. The SGX DDK
in modular form requires this symbol to be exported.

Change-Id: I5d45b953379f1ae7c05d10271427a9cd611248a6
Signed-off-by: Rogelio Garcia <rgarcia@ti.com>
OMAPDSS: DSSCOMP: Remove PVR_SGX dependency.

OMAPDSS: DSSCOMP: Remove PVR_SGX dependency.

In order to disable the in-kernel version of the DDK
and be able to use it as a module we need to remove
this dependency.
No harm to DSSCOMP, it will just wait until a DDK
is installed to execute.

Change-Id: Ie1436a45fb20044d0121eb196c6155b50baa7915
Signed-off-by: Rogelio Garcia <rgarcia@ti.com>
OMAPDSS: drop small YUV encoded frames on OMAP44xx

OMAPDSS: drop small YUV encoded frames on OMAP44xx

OMAP44xx has hardware limitation: in stall mode, when the frame pixel size
is less than output SyncFifo depth(16), DISPC hangs without sending any data.
Simple workaround is to drop such frame, as cases when YUV frames of this size
are very rare.

Change-Id: I31dc262b07a52b66209c093f136ad2bac66f9439
Signed-off-by: Sergiy Kibrik <sergiy.kibrik@globallogic.com>
ARM: Fix negative idle stats for offline cpu

We see negative idle stats because of cpu dying without
cleaning up idle entry statistics. When a cpu is offline,
the most immediate thing you'd want to do is just call
into cpu_die() and not waste time calling notifier(IDLE_START).

CRs-Fixed: 414554
Change-Id: Iadc6a3ca39997e0ccf65d2a29b004e24b1b211a1
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
cpufreq: Retain only online cpus in managed_policy->cpus

cpufreq's handling of cpu online event can incorrectly initialize
managed_policy->cpus to include offline cpus. This causes cpufreq
governors to include offline cpus in their idle time computation, which
causes frequency to shoot up beyond normal levels (on systems where 2 or
more cpus need to be synchronized wrt frequency change).

This frequency shootup was not seen prior to commit 21111be8 which
changed idle time accounting for offline cpus. Prior to commit 21111be8,
idle time statistics for offline cpus would include their offline time
as well. Post commit 21111be8, offline time is not included in a cpu's
idle time statistics.

As a result, ondemand (or other cpufreq) governors would see unchanged
idle time for offline cpus, causing them to interpret those (offline)
cpus as 100% busy, which is wrong.

This patch fixes the issue by modifying cpufreq's hotplug handling to
retain only online cpus in managed_policy->cpus field. cpufreq governors
would then skip such offline cpus from idle time calculations.

Change-Id: Id2eba8c0ec3367609369b2e42a4e1386ff2e7ab5
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Enable UNALIGNED_ACCESS for the new LZO algorithm to use. LZO decrompression is used on QCACHE so we benefit a little from the new and improved LZO code.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ARM: 7583/1: decompressor: Enable unaligned memory access for v6 and above

Modern GCC can generate code which makes use of the CPU's native
unaligned memory access capabilities.  This is useful for the C
decompressor implementations used for unpacking compressed kernels.

This patch disables alignment faults and enables the v6 unaligned
access model on CPUs which support these features (i.e., v6 and
later), allowing full unaligned access support for C code in the
decompressor.

The decompressor C code must not be built to assume that unaligned
access works if support for v5 or older platforms is included in
the kernel.

For correct code generation, C decompressor code must always use
the get_unaligned and put_unaligned accessors when dealing with
unaligned pointers, regardless of this patch.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
OMAPDSS: DISPC: Pipe threshold sizes power optimization.

This patch changes the calculation of thresholds and sets low
threshold to half of buffer size for OMAP4. The memory will
able to sleep between transactions to dss because dss will
read by big chunks.

boype: Also removed dispc_calculate_threshold function, as it is no longer used.

Backport from TI omapzoom kernel 3.4 repo, based upon:
http://git.omapzoom.org/?p=kernel/omap.git;a=commit;h=cd99eb345e1ad26ffbc665f46ea917dad762937b
page-writeback.c: subtract min_free_kbytes from dirtyable memory

When calculating amount of dirtyable memory, min_free_kbytes should be
subtracted because it is not intended for dirty pages.

Addresses http://bugs.debian.org/695182

[akpm@linux-foundation.org: fix up min_free_kbytes extern declarations]
[akpm@linux-foundation.org: fix min() warning]
Signed-off-by: Paul Szabo <psz@maths.usyd.edu.au>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mtd: Disable mtdchar mmap on MMU systems

commit f5cf8f07423b2677cebebcebc863af77223a4972 upstream.

This code was broken because it assumed that all MTD devices were map-based.
Disable it for now, until it can be fixed properly for the next merge window.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>