ASoC: wcd9xxx: Enhance class H controller to support dynamic CP voltage

Codecs can operate at a lower voltage for vdd_buck, whereas
this voltage source being shared, it is not guaranteed that the
codec will always receive exactly the requested voltage. Add support
to class H controller to handle dynamic switching of the chargepump
voltage.

Change-Id: I68f93e0b070ec51db9b958f56c797edb5cbe0c85
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ASoC: wcd9xxx: Apply class H parameters based on impedance

Different headphones have different impedance that results in volume level
difference on ears as lower impedance headphone will have higher
volume with the same gain on PAs.
To get better output on headset configure class H controller
based on the impedance detected.

Change-Id: Ia4d62120e57122a52ec0030f7e883cbeb284631b
Signed-off-by: Santosh Mardi <gsantosh@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ASoC: wcd9320: Update buck control and mode registers

Leave BUCK control registers as default and set to lower BUCK ref voltage
for avoid pop noise during playback initiation.

CRs-fixed: 506099
Change-Id: I47c068fc8344108dcd5b2c63f8a5c0a5e40a4c8b
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ASoC: wcd9xxx: fix class H controller driver to handle concurrency

Fix class H controller driver's finite state machine to handle concurrent
playback.  This makes audio playback quality to be better with less power
consumption.

CRs-fixed: 506099
Change-Id: I621fa5a4df9964fda6c51c70e50ece2e783cafb6
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ASoC: wcd9xxx: introduce headphone impedance detection support

Different headphones have different impedance that results in volume level
difference on ears as lower impedance headphone will have higher
volume with the same gain on PAs.
Provide impedance of headphones to be able to adjust gain according to
impedance so user can have consistent volume level with different
headphones.

Change-Id: I707f34344cd0068507bdd8a0192eb7afea1147f2
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Revert "mm: page_alloc: fix section_mismatch because set_pageblock_order could be called by memory_hotplug."

We might not need this on HH.

This reverts commit e7e1afb61fd9ffbbdc32993e832ed753cfd19337.
input: touchboost: boost less and for less time on thread migrations and load based syncs.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
ASoC: wcd9320: Configure codec hardware in optimal mode

Update class H controller registers to configure codec in optimal mode.

CRs-fixed: 506099
Change-Id: I26ec0ad04bcec511ea2a37d2e357bae0345bd2a1
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Revert most dubius sched patches from the tree.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: interactive: Remove unnecessary cpu_online() check

Cpufreq no longer calls governor callback for offlined cpus. i.e. All
policy->cpus are guaranteed to be online. Hence we don't need explicit check to
see if cpu is online or not.

Change-Id: I9ad85ea4addd5b4a40952e59ed730dd15e328690
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
arm: arch_timer: set memory mapped timer interrupt as IRQF_TIMER

The memory mapped timer is used as a broadcast timer to wake the core for
timer interrupts when the arch timer might not be functional. When interrupt
is not marked as IRQF_NO_SUSPEND, the interrupt gets disabled during the
suspend_device_irqs() callback in the suspend path. If a core were to enter a
idle low power mode which relies on broadcast timer to process the interrupt,
the core is never woken up for timer interrupts.

Mark the interrupt with IRQF_TIMER which marks this interrupt as a timer
interrupt and also marks it as IRQF_NO_SUSPEND

CRs-fixed: 636712
Change-Id: I0484e92a9d05f66a0c5b3c00c584a3dd3fe6ae85
Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
rtc: alarm: Proper handling of spinlock

In alarm_shutdown hook, taking interruptible mutex
lock in interrupt disabled context. This patch fixes
alarm_shutdown function to call rtc_read_time and
rtc_set_alarm APIs in interrupt enabled context.

Change-Id: I9392d8908c19365993dccc22504f4b6f83ae8f72
CRs-Fixed: 619657
Signed-off-by: Mohit Aggarwal <maggarwa@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cma: Remove potential deadlock situation

A report was given of a deadlock situation on the cma_mutex:

mutex_lock(cma_mutex)   (*2)
dma_release_from_contiguous
ion_secure_cma_free_chunk
ion_secure_cma_shrinker
shrink_slab
try_to_free_pages
migrate_pages
alloc_contig_range
mutex_lock(cma_mutex)  (*1)
dma_alloc_from_contiguous
ion_alloc

We may need to free CMA allocations while a current CMA allocation is in
progress if CMA is freed from a shrinker. cma_mutex currently protects
two things: the bitmap indicating which pages are allocated/free and
serialization of isolation/migration calls on allocation. There is
no need to take the mutex on free calls though as the pages are
freed back into the system via the regular __free_page call. Move
the free_contig_range call outside the cma_mutex to break the
chain dependency. We can safely free the pages back into the system
before changing the bitmap without any risk of races.

Change-Id: I4989eb2891e502b08db8117a51bd86652e902778
CRs-Fixed: 619644
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cma: Make locking finer grained

CMA locking is currently very coarse. The cma_mutex protects both
the bitmap and avoids concurrency with alloc_contig_range. There
are several situations which may result in a deadlock on the CMA
mutex currently, mostly involving AB/BA situations with alloc and
free. Fix this issue by protecting the bitmap with a mutex per CMA
region and use the existing mutex for protecting against concurrency
with alloc_contig_range.

Change-Id: I6863ba7ab7fae07c68fee23b0aa4c869244fe2a1
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: interactive: timer_rate at 20k is too low and rapes battery life.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Merge branch 'nightlies' of github.com:franciscofranco/hammerhead into nightlies