msm: msm_bus: Modify IB aggregation at master

The IB aggregation at master assumed that the sel_clk pointers were set
before trying to access them, but there could be clients that register
but don't do any transaction at all which could lead to data aborts during
the IB aggregation. Change this to directly access the allocated pnode
entry instead of relying on sel_clk pointer.

Change-Id: Iefffdd5ff835496fa54d3de97e416a62735154a2
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
ARM: dts: Reintroduce dual config for CPU on msm8974

Reintroduce the dual configuration mode for CPU masters on msm8974.
This will enable throttling of CPU in certain low bandwidth usecases
to alleviate timeline issues for other real time masters in the SOC.

Change-Id: Ic32f217ce40ee6ead4edd191811f9ce9f4e7e7ce
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
msm: msm_bus: Don't program bw regs in dual config

When in dual configuration mode, don't program the bw registers
since they are already programmed at boot up.

Change-Id: I74d559f997b6374df7b68ffd022aa6d36beb7a9d
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
msm: msm_bus: Arbitrate IB for dual config masters

Arbitrate the IBs on nodes marked as dual config. This will prevent cases
where the last client's requests is always used to apply dual config rules.

Change-Id: I06f9a16e5f32c1cda7a5d04a72a6e5cf7dc9fae6
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
ARM: dts: msm: Modify bus vector for RNG client on msm8974

Modify the RNG (Random Number Generator) bus vector to use a different
originating master id, this change helps alleviate some slowdowns in boot
time noticed in targets where CPU is artificially bus throttled below a
threshold frequency.

Change-Id: Idf2a1d128f56e6aafebcbf0184ef2454d385be34
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
Merge "ARM: dts: msm: Modify bus vector for RNG client on msm8974"
Merge "msm: msm_bus: Modify IB aggregation at master"
Merge "msm: msm_bus: Don't program bw regs in dual config"
Merge "msm: msm_bus: Arbitrate IB for dual config masters"
Merge "ARM: dts: Reintroduce dual config for CPU on msm8974"
msm: kgsl: Ensure signals do not cause waits to end early

Move to using uninterruptible (which will bail if any signal is received)
when waiting on events.  A signal was causing the wait to finish
prematurely, freeing memory while the GPU was still using it.  This caused
quite a few page faults and the device to become unstable.

Change-Id: Ic0dedbade9143c9377830a209c3ffd252aa9668b
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Panic if global timestamp wait fails in context detach

If we timeout while waiting for the last issued global timestamp for
a detaching context to expire (10 seconds!) then we are on a fast
train to crashville.  BUG_ON() so we can stand a chance of debugging
this very rare issue.

Change-Id: Ic0dedbaddb9cbc5681f9c872785ce26b7cf9b87b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: audio: qdsp6v2: disable read interrupts for smd channels

SMD channels are configured to send interrupts when the remote end
reads from the channels. Disable this behavior to reduce number
of interrupts.

Change-Id: Idc6e57a68741dd6e52f0f1be57b8c85c586df59f
Signed-off-by: Panwar Vivek <vpanwa@codeaurora.org>
devfreq: governor_cpubw_hwmon: Remove sample_ms and fix round up of freq

devfreq already provides a sysfs interface for changing polling/sampling
period. So, there is no need for the governor to separately expose
sampling_ms. Also, sampling_ms had to be explicitly updated whenever
polling_ms was updated for the governor to function correctly. Make the
interface simpler by combining sample_ms with polling_interval control
provided by devfreq.

The rounding of freq to multiples of bw_step is unnecessary since the
devfreq device already does the rounding to the next valid level. Rounding
of AB to multiples of bw_step is still necessary since it's a vote that's
summed up and doesn't have a direct 1-to-1 mapping to frequencies.

Also update default bw_step to 190 MB/s instead of 200 MB/s to account for
the fact that MB/s to MHz conversion needs to take into account the
difference in the meaning of M (2^20 vs 10^6) between MB and MHz. Similarly
also update io_percent to 16.

Change-Id: I5fea989c647955103de3813be8eb9ec612f131bc
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
msm: mdss: add iommu attach in bus bandwidth control request

Add mdss_iommu_attach in mdss_bus_bandwidth_ctrl to
attach iommu on bus bandwidth enable request.
mdss_iommu_attach/mdss_iommu_dettach can happen in
separate thread, which may lead to a race condition
where attach/detach may happen at same time. Add lock
to properly synchronize the iommu attach/detach to
fix race condition.

Change-Id: I45c8ef1fa1fa1c2da9c6c3702bd007856e469b9d
Signed-off-by: Pawan Kumar <pavaku@codeaurora.org>
drivers: qpnp-bms: Use disable_irq_nosync() in IRQ context

Do not use disable_irq() as it waits for the irq handler
to complete causing a deadlock.

CRs-Fixed: 591227
Change-Id: I0a1d29845b3bced2fda6080765c20dff678050d4
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Merge AU_LINUX_ANDROID_KK_3.5_RB1.04.04.02.006.087 on remote branch

Change-Id: I2de885b9fbbb02aa00d61a70aaa4198bf3af58f1
Merge "Merge AU_LINUX_ANDROID_KK_3.5_RB1.04.04.02.006.087 on remote branch"
Revert "ARM: dts: msm: change emmc clock line drive strength"

This reverts commit 1da6b37497a7a80323994be13eacb0d439e47154.
This change caused regression that was fixed by commit
644bc429bce7e109475701a5f49477b97a8811ae "ARM: dts: msm: Reduce drive
strength on SDC1 clk for MSM8974Pro AB MTP" which reduced the drive
strength to 10mA addressing data corruptions. This commit was introduced
to address potential CRC issues that could rise due to the low drive
strength. This isssue will be revisted if there are any CRC errors
reported later on.
Update copyright year.

CRs-Fixed: 600184
Change-Id: I767f9fade577e2b7865bc3d78adf830f14bdb77a
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Revert "mmc: sdhci: retune on cmd or data CRC error"

This reverts commit 6ec99eb687b989ef4af701475d4a162e990964f9.

Change-Id: Ic4186af897484a346bba5930fac4f8bd5bb7e0a0
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>