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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
soc/tegra: Changes for v4.21-rc1
These changes are mostly cleanups to the PMC driver, but they also add
support for wake events on Tegra186 and Tegra194, which can be used to
wake the system from sleep. With this and the corresponding device
tree additions suspend/resume is finally working on these SoCs.
* tag 'tegra-for-4.21-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: pmc: Add initial Tegra194 wake events
soc/tegra: pmc: Add initial Tegra186 wake events
soc/tegra: pmc: Add wake event support
soc/tegra: pmc: Add Tegra194 support
soc/tegra: pmc: Change to use DEFINE_SHOW_ATTRIBUTE macro
soc/tegra: Don't leak device tree node reference
soc/tegra: fuse: Remove duplicated function declaration
soc/tegra: pmc: Drop locking from tegra_powergate_is_powered()
soc/tegra: pmc: Add sysfs entries for reset info
soc/tegra: pmc: Don't power-up XUSB power-domains
Signed-off-by: Olof Johansson <olof@lixom.net>
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https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers
Renesas ARM Based SoC Drivers Updates for v4.21
SYSC Driver:
* Common
- Fix power domain control after system resume
- Merge PM Domain registration and linking
- Remove rcar_sysc_power_{down,up}() helpers
* R-Car E3 (r8a77990) SoC
- Fix initialization order of 3DG-{A,B}
* R-Car V3H (r8a77980) SoC
- Correct A3VIP[012] power domain hierarchy
- Correct names of A2DP[01] power domains
* R-Car V3M (r8a77970) SoC
- Correct names of A2DP/A2CN power domains
- emove non-existent CR7 power domain
* R-Car M3-N (r8a77965) SoC
- Remove non-existent A3IR power domain
* tag 'renesas-drivers-for-v4.21' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
soc: renesas: rcar-sysc: Fix power domain control after system resume
soc: renesas: rcar-sysc: Merge PM Domain registration and linking
soc: renesas: rcar-sysc: Remove rcar_sysc_power_{down,up}() helpers
soc: renesas: r8a77990-sysc: Fix initialization order of 3DG-{A,B}
soc: renesas: r8a77980-sysc: Correct A3VIP[012] power domain hierarchy
soc: renesas: r8a77980-sysc: Correct names of A2DP[01] power domains
soc: renesas: r8a77970-sysc: Correct names of A2DP/A2CN power domains
soc: renesas: r8a77970-sysc: Remove non-existent CR7 power domain
soc: renesas: r8a77965-sysc: Remove non-existent A3IR power domain
Signed-off-by: Olof Johansson <olof@lixom.net>
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This pxa update brings only a single patch, finishing the
dmaengine conversion.
* tag 'pxa-for-4.21' of https://github.com/rjarzmik/linux:
dmaengine: pxa: make the filter function internal
Signed-off-by: Olof Johansson <olof@lixom.net>
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To control power to a power domain, the System Controller (SYSC) needs
the corresponding interrupt source to be enabled, but masked, to prevent
the CPU from receiving it.
Currently this is handled in the driver's probe() routine, and set up
for every domain present, even if it will not be controlled directly by
SYSC (CPU domains are powered through the APMU on R-Car Gen2 and later).
On R-Car Gen3, PSCI powers down the SoC during system suspend, thus
losing any configured interrupt state. Hence after system resume, power
domains not controlled through the APMU (e.g. A3IR, A3VC, A3VP) fail to
power up.
Fix this by replacing the global interrupt setup in the probe() routine
by a domain-specific interrupt setup in rcar_sysc_power(), where the
domain's power is actually controlled. This brings the code more in
line with the flowchart in the Hardware User's Manual.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Commit 977d5ba4507dfe5b ("soc: renesas: rcar-sysc: Make PM domain
initialization more robust") split PM Domain registration and the
linking of children to their parents, to accommodate PM Domain tables
that list child domains before their parents.
However, this failed to realize that parent power domains must be
powered up before their children anyway, and that this thus must be
reflected by the order in the PM Domain tables.
Revert the split, as it did not help anyway.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Until commit 7e8a50df26f4e700 ("soc: renesas: rcar-sysc: Drop legacy
handling"), the rcar_sysc_power_{down,up}() helpers were public, as they
were called by the legacy (pre-DT) CPU power management code on R-Car H1
and R-Car Gen2 before.
As they are just one-line wrappers around rcar_sysc_power(), it makes
sense to just remove them.
This also avoids a bool/helper/bool conversion in rcar_sysc_power_cpu(),
where a bool is checked to call one of two helper functions, which
just call rcar_sysc_power() with hardcoded boolean values again.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The workaround for the wrong hierarchy of the 3DG-{A,B} power
domains on R-Car E3 ES1.0 corrected the parent domains.
However, the 3DG-{A,B} power domains were still initialized and powered
in the wrong order, causing 3DG operation to fail.
Fix this by changing the order in the table at runtime, when running on
an affected SoC.
Fixes: 086b399965a7ee7e ("soc: renesas: r8a77990-sysc: Add workaround for 3DG-{A,B}")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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As the pxa architecture and all its related drivers do not rely anymore
on the filter function, thanks to the slave map conversion, make
pxad_filter_fn() static, and remove it from the global namespace.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Vinod Koul <vkoul@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers
Qualcomm ARM Based Driver Updates for v4.21
* Fix llcc license, includes, and error checks
* Remove use of memcpy in cmd-db and fix API breakage
* Add QCS404 compatible to SMD-RPM
* Minor fixes for QMI
* Add irq clear handling in QCOM Geni SE during init
* tag 'qcom-drivers-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
drm: msm: Check cmd_db_read_aux_data() for failure
soc: qcom: smd-rpm: Add QCS404 compatible
soc: qcom: llcc-slice: Remove duplicated include from llcc-slice.c
soc: qcom: cmd-db: Stop memcpy()ing in cmd_db_read_aux_data()
soc: qcom: cmd-db: Remove memcpy()ing from cmd_db_get_header()
soc: qcom: Drop help text for QCOM_QMI_HELPERS
soc: qcom: qmi_interface: Limit txn ids to U16_MAX
soc: qcom: llcc-slice: Add error checks for API functions
soc: qcom/llcc: add MODULE_LICENSE tag
soc: qcom: Add irq clear handling during SE init
Signed-off-by: Olof Johansson <olof@lixom.net>
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into next/drivers
This pull request contains Broadcom ARM/ARM64/MIPS SoCs drivers changes
for 4.21, please pull the following changes:
- James fixes the firmware interface after a commit changed the use of
VLA and broke large transfers
- Stefan adds a timeout check for Raspberry Pi firmware transactions and
updates a bunch of SoC/firmware files to use SPDX tags
- Wolfram switches the GISB bus arbiter to use dev_get_drvdata()
- Yangtao provides a fix for a reference leak due to a call to
of_find_node_by_path()
- Florian fixes the CPU re-entry point out of S3 suspend with kernels
built in Thumb2 mode
* tag 'arm-soc/for-4.21/drivers' of https://github.com/Broadcom/stblinux:
soc: bcm: brcmstb: Don't leak device tree node reference
firmware: raspberrypi: Switch to SPDX identifier
firmware: raspberrypi: Fix firmware calls with large buffers
soc: bcm: Switch raspberrypi-power to SPDX identifier
firmware: raspberrypi: Define timeout for transactions
bus: brcmstb_gisb: simplify getting .driver_data
soc: bcm: brcmstb: Fix re-entry point with a THUMB2_KERNEL
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers
Driver changes for omaps for v4.21 merge window
Few SoC related driver changes to add PRCM as the wake-up source
for wkup_m3_ipc driver, and to improve ti-sysc driver for dra7
mcasp and device detection when debug is enabled.
There is also a non-critical fix for ti-sysc to fix handling of
the optional clocks but this can wait for the merge window no problem.
* tag 'omap-for-v4.21/driver-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
soc: ti: wkup_m3: Add PRCM int16 as the wake up source
bus: ti-sysc: Detect devices for debug on omap5
bus: ti-sysc: Add mcasp optional clocks flag
bus: ti-sysc: Fix getting optional clocks in clock_roles
Signed-off-by: Olof Johansson <olof@lixom.net>
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https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into next/drivers
Amlogic SoC drivers for v4.21
- new clock measurement driver and bindings
- COMPILE_TEST fix
* tag 'amlogic-drivers' of https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
soc: amlogic: Add Meson Clock Measure driver
dt-bindings: amlogic: Add Internal Clock Measurer bindings
drivers: soc: Allow building the amlogic drivers without ARCH_MESON
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/drivers
Powerdomain support for rk3066 and rk3188.
* tag 'v4.21-rockchip-drivers-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
soc: rockchip: power-domain: add rk3066 powerdomains
soc: rockchip: power-domain: add rk3188 powerdomains
dt-bindings: add compatibles for rk3066/rk3188 power controllers
dt-bindings: add power-domain header for RK3066 SoCs
dt-bindings: add power-domain header for RK3188 SoCs
Signed-off-by: Olof Johansson <olof@lixom.net>
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The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Feb 28, 2018)
renamed the A3VIP power domain on R-Car V3H to A3VIP0, and clarified the
power domain hierarchy for the A3VIP[012] power domains.
As the definition for the A3VIP0 domain is not yet used from DT, it can
just be renamed.
Fixes: 7755b40d07a8dba7 ("dt-bindings: power: add R8A77980 SYSC power domain definitions")
Fixes: 41d6d8bd8ae94ca9 ("soc: renesas: rcar-sysc: add R8A77980 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Feb 28, 2018)
renamed the A2PD0 and A2DP0 power domains on R-Car V3H to A2DP0 resp.
A2DP1.
As these definitions are not yet used from DT, they can just be renamed.
Fixes: 7755b40d07a8dba7 ("dt-bindings: power: add R8A77980 SYSC power domain definitions")
Fixes: 41d6d8bd8ae94ca9 ("soc: renesas: rcar-sysc: add R8A77980 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Feb 28, 2018)
renamed the A2IR2 and A2IR3 power domains on R-Car V3M to A2DP resp.
A2CN.
As these definitions are not yet used from DT, they can just be renamed.
While at it, fix the indentation of the A3IR definition.
Fixes: 833bdb47c826a1a6 ("dt-bindings: power: add R8A77970 SYSC power domain definitions")
Fixes: bab9b2a74fe9da96 ("soc: renesas: rcar-sysc: add R8A77970 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Feb 28, 2018)
removed the CR7 power domain on R-Car V3M, as this SoC does not have an
ARM Cortex-R7 Realtime Core.
As this definition was never used from DT, it can just be removed.
Fixes: 833bdb47c826a1a6 ("dt-bindings: power: add R8A77970 SYSC power domain definitions")
Fixes: bab9b2a74fe9da96 ("soc: renesas: rcar-sysc: add R8A77970 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Feb 28, 2018)
removed the A3IR power domain on R-Car M3-N, as this SoC does not have
an Image Processing Unit (IMP-X5).
The definition in the DT bindings header cannot be removed yet, until
its (incorrect) user has been removed.
Fixes: a527709b78b3c997 ("soc: renesas: rcar-sysc: Add R-Car M3-N support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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We need to check the call to cmd_db_read_aux_data() for the error case,
so that we don't continue and use potentially uninitialized values for
'pri_count' and 'sec_count'. Otherwise, we get the following compiler
warnings:
drivers/gpu/drm/msm/adreno/a6xx_gmu.c: In function 'a6xx_gmu_rpmh_arc_votes_init.isra.12':
drivers/gpu/drm/msm/adreno/a6xx_gmu.c:943:12: warning: 'pri_count' is used uninitialized in this function [-Wuninitialized]
pri_count >>= 1;
^~~
drivers/gpu/drm/msm/adreno/a6xx_gmu.c:948:12: warning: 'sec_count' may be used uninitialized in this function
[-Wmaybe-uninitialized]
sec_count >>= 1;
^~~
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kbuild test robot <lkp@intel.com>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Rob Clark <robdclark@gmail.com>
Fixes: ed3cafa79ea7 ("soc: qcom: cmd-db: Stop memcpy()ing in cmd_db_read_aux_data()")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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This patch adds a compatible for the rpm on the Qualcomm QCS404 platform.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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The Amlogic Meson SoCs embeds a clock measurer IP to measure the internal
clock paths frequencies.
The precision is determined by stepping into the duration until the counter
overflows.
The debugfs slows a pretty summary and each clock can be measured
individually aswell.
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
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The Amlogic Meson SoCs embeds a clock measurer IP to measure the internal
clock paths frequencies.
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
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Remove duplicated include.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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of_find_node_by_path() acquires a reference to the node returned by it
and that reference needs to be dropped by its caller. soc_is_brcmstb()
doesn't do that, so fix it.
[treding: slightly rewrite to avoid inline comparison]
Fixes: d52fad262041 ("soc: add stubs for brcmstb SoC's")
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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Tegra194 supports 96 wake events in total. Many of them are never used,
so only the most common ones (RTC alarm and power key) are currently
defined.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Tegra186 support 96 wake events in total. Many of them are never used,
so only the most common ones (RTC alarm and power key) are currently
defined.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The power management controller has top-level controls that allow
certain interrupts (such as from the RTC or a subset of GPIOs) to
wake the system from sleep. Implement infrastructure to support
these wake events.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The PMC controller on Tegra194 has a couple of new I/O pads and drops
others compared to Tegra186.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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This pull request adds SPDX to BCM2835 drivers, and fixes some bugs in
the firmware driver (silently hanging if the VPU doesn't respond to a
mailbox transaction, and undersized buffers in the firmware property
transactions for tags that aren't used yet in the upstream).
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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of_find_node_by_path() acquires a reference to the node returned by it
and that reference needs to be dropped by its caller. soc_is_tegra()
doesn't do that, so fix it.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
[treding: slightly rewrite to avoid inline comparison]
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Adopt the SPDX license identifier headers to ease license compliance
management.
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
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Add PRCM int16 as the wake up source.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Commit a1547e0bca51 ("firmware: raspberrypi: Remove VLA usage")
moved away from VLA's to a fixed maximum size for mailbox data.
However, some mailbox calls use larger data buffers
than the maximum allowed in that change. This fix therefor
moves from using fixed buffers to kmalloc to ensure all sizes
are catered for.
There is some documentation, which is somewhat out of date,
on the mailbox calls here :
https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface
Fixes: a1547e0bca51 ("firmware: raspberrypi: Remove VLA usage")
Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
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We want to see the names of detected devices when DEBUG is enabled.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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We have OPT_CLKS_NEEDED in legacy platform data, but it's missing
from the ti-sysc driver for device tree based configuration.
In order to pass OPT_CLKS_NEEDED quirk flag we need to update omap4 module
data and add a new compatible for dra7 as the module layout is different
from sysc_regbits_omap4_mcasp.
Fixes: 70a65240efb1 ("bus: ti-sysc: Add register bits for interconnect
target modules")
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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We can have holes in clock_roles with interface clock missing for
example. Currently getting an optional clock will fail if there are
only a functional clock and an optional clock.
Fixes: 09dfe5810762 ("bus: ti-sysc: Add handling for clkctrl opt clocks")
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The current condition makes it difficult to compile the amlogic/
drivers with COMPILE_TEST, or without ARCH_MESON in general.
Fixes kbuild errors with patch series that depend on drivers in that
directory, for instance the meson video decoder.
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
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Adopt the SPDX license identifier headers to ease license compliance
management.
Cc: Alexander Aring <aring@mojatatu.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
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We should never assume to get a reply from the firmware otherwise
the call could block forever and the user don't get informed. So
define a timeout of 1 sec and print a stacktrace once in the unlikely
case the timeout expired.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
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Let's change the function signature to return the pointer to memory or
an error pointer on failure, and take an argument that lets us return
the size of the aux data read. This way we can remove the
cmd_db_read_aux_data_len() API entirely and also get rid of the memcpy
operation from cmd_db to the caller. Updating the only user of this code
shows that making this change allows us to remove a function and put the
lookup where the user is.
Cc: Mahesh Sivasubramanian <msivasub@codeaurora.org>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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The cmd_db_get_header() function is a static local function that doesn't
need to copy anything from one place to another. Instead, it can just
point into the region by returning pointers to what we're looking for.
If we do that, we should mark what we're returning as const so that code
can't modify cmd-db without an obvious cast.
Cc: Mahesh Sivasubramanian <msivasub@codeaurora.org>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Evan Green <evgreen@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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The help text is visible in menuconfig, however QCOM_QMI_HELPERS is a
hidden kconfig, so it is not selectable in menuconfig.
Remove the help text so that it is more clear that this is intentionally
a hidden kconfig.
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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Txn IDs created up to INT_MAX cause overflow while storing
the IDs in u16 type supported by QMI header.
Limit the txn IDs max value to U16_MAX to avoid overflow.
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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llcc_slice_getd can return a ERR_PTR code on failure. Add a IS_ERR_OR_NULL
check to subsequent API calls that use struct llcc_slice_desc to guard
against faults and to let the leaf drivers get away with safely using a
ERR_PTR() encoded "pointer" in the aftermath of a llcc_slice_getd error.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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The lack of a MODULE_LICENSE tag prevents building the llcc driver
as a loadable module:
FATAL: modpost: GPL-incompatible module llcc-slice.ko uses GPL-only symbol 'ktime_get'
This adds the appropriate license and description tags.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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when the kernel inits a SE, its quite possible we have pending interrupts
from bootloaders which did not handle/clear them. So do this in kernel at
the SE init, to avoid some of it causing bad behavior, while at it also
club all the register writes needed to clear the se irqs into a function
to avoid repeating it over.
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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The function tegra_read_chipid() is declared twice in fuse.h. Remove the
redundant declaration.
Signed-off-by: Bo Yan <byan@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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