Reset controller changes for v4.19

This adds new drivers and bindings for the SDM845 AOSS (always on
subsystem) reset controller and for the Uniphier USB3 core reset.
SPI controller resets are added to the Uniphier reset driver.

* tag 'reset-for-4.19' of git://git.pengutronix.de/git/pza/linux:
  reset: uniphier: add reset control support for SPI
  reset: uniphier: add USB3 core reset control
  dt-bindings: reset: uniphier: add USB3 core reset support
  reset: simple: export reset_simple_ops to be referred from modules
  reset: qcom: AOSS (always on subsystem) reset controller
  dt-bindings: reset: Add AOSS reset bindings for SDM845 SoCs
Signed-off-by: NOlof Johansson <olof@lixom.net>

Add reset control for SPI controller on UniPhier SoCs.
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Add a reset line to enable USB3 core implemented in UniPhier SoCs.

This reuses only the reset operations in reset-simple, because
the reset-simple doesn't handle any SoC-dependent clocks and resets.
This reset line is included in the USB3 glue layer, and it's necessary
to enable clocks and deassert resets of the layer before using this
reset line.
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Add DT bindings for reset control of USB3 core implemented in UniPhier SoCs.
The reset control belongs to USB3 glue layer.
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Allow reset_simple_ops to be referred from modules that use reset-simple
framework by adding EXPORT_SYMBOL_GPL.
Suggested-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Add reset controller driver for Qualcomm SDM845 SoC to
control reset signals provided by AOSS for Modem, Venus
ADSP, GPU, Camera, Wireless, Display subsystem
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NSibi Sankar <sibis@codeaurora.org>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Add SDM845 AOSS (always on subsystem) reset controller binding
Signed-off-by: NSibi Sankar <sibis@codeaurora.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Merge tag 'vexpress-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers

ARMv7 Vexpress update/cleanup for v4.19

Just single cleanup patch to use devm_ioremap_resource in place of
devm_request_mem_region and devm_ioremap.

* tag 'vexpress-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  misc: vexpress/syscfg: Use devm_ioremap_resource() to map memory
Signed-off-by: NOlof Johansson <olof@lixom.net>

Merge tag 'scmi-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers

SCMI cleanup for v4.19

Single patch removing some unnecessary NULL pointer checks.

* tag 'scmi-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: remove some unnecessary checks
Signed-off-by: NOlof Johansson <olof@lixom.net>

Merge tag 'tegra-for-4.19-memory' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

memory: tegra: Changes for v4.19-rc1

This contains a single fix for the initialization order of the various
parts of the Tegra memory controller driver.

* tag 'tegra-for-4.19-memory' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  memory: tegra: Correct driver probe order
Signed-off-by: NOlof Johansson <olof@lixom.net>

Merge tag 'omap-for-v4.19/ti-sysc-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

ti-sysc driver changes for v4.19 merge window

These changes add support for mcan controller found
on dra7 to probe it with only dts changes with no
need for legacy hwmod platform data. As it depends
on the related clock change, the clock change is
included here and acked by Stephen Boyd.

* tag 'omap-for-v4.19/ti-sysc-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Add support for software reset
  bus: ti-sysc: Add support for using ti-sysc for MCAN on dra76x
  clk: ti: dra7: Add clkctrl clock data for the mcan clocks
  bus: ti-sysc: Use 2-factor allocator arguments
Signed-off-by: NOlof Johansson <olof@lixom.net>

This pull request contains Broadcom ARM/ARM64/MIPS SoCs drivers changes
for 4.19, please pull the following:

- Doug updates the low-level suspend/resume code for ARM SoCs to support
  the latest rev B3.0 memory controllers found on newer chips with an
  appropriate match structure to perform the correct entry sequencing

- Florian updates the Device Tree binding document for these memory
  controllers to list all possible compatible strings that exist given
   the supported memory controllers.

- Stefan adds the GET_THROTTLED firmware property value that is required
  for the Rasperry Pi voltage monitoring driver and updates the
  Raspberry Pi firmware driver accordingly to register such a device
  using the HWMON subsystem. Finally he adds support for reporting under
  voltage conditions using a specialized HWMON driver.

* tag 'arm-soc/for-4.19/drivers' of https://github.com/Broadcom/stblinux:
  firmware: raspberrypi: Remove VLA usage
  firmware: raspberrypi: Register hwmon driver
  hwmon: Add support for RPi voltage sensor
  soc: bcm: brcmstb: Add missing DDR MEMC compatible strings
  soc: bcm: brcmstb: pm: Add support for newer rev B3.0 controllers
  ARM: bcm2835: Add GET_THROTTLED firmware property
Signed-off-by: NOlof Johansson <olof@lixom.net>

Instead of checking the return value of platform_get_resource(), we can
use devm_ioremap_resource() which has the NULL pointer check and the
memory region requesting. devm_ioremap_resource is designed to replace
calls to devm_request_mem_region followed by devm_ioremap, so let's use
the same.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: NLiviu Dudau <liviu.dudau@arm.com>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>

The Reset Controller should be registered in the end of probe, otherwise
Memory Controller device goes away if IRQ requesting fails and the Reset
Controller stays registered. To avoid having to unwind the MC probing in
a case of SMMU probe failure, let's simply print the error message without
failing the MC probe. This allows us to just move the Reset Controller
registering before the SMMU registration, reducing code churning. Also
let's not fail MC probe in a case of Reset Controller registration failure
as it doesn't prevent the MC driver to work.
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>

Add support for the software reset of a target interconnect
module using its sysconfig and sysstatus registers.
Signed-off-by: NFaiz Abbas <faiz_abbas@ti.com>
[tony@atomide.com: updated to check if sysconfig exists]
Signed-off-by: NTony Lindgren <tony@atomide.com>

The dra76x MCAN generic interconnect module has a its own
format for the bits in the control registers.

Therefore add a new module type, new regbits and new capabilities
specific to the MCAN module.
Acked-by: NRob Herring <robh@kernel.org>
CC: Tony Lindgren <tony@atomide.com>
Signed-off-by: NFaiz Abbas <faiz_abbas@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add clkctrl data for the m_can clocks and register it within the
clkctrl driver
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NStephen Boyd <sboyd@kernel.org>
CC: Tero Kristo <t-kristo@ti.com>
Signed-off-by: NFaiz Abbas <faiz_abbas@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This pull request brings in the new HWMON driver for getting
under-voltage detection from the Raspberry Pi firmware, and a change
from Kees to remove another instance of VLA stack usage.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

In the quest to remove all stack VLA usage from the kernel[1], this
removes the VLA in favor of a maximum size and adds a sanity check.
Existing callers of the firmware interface never need more than 24
bytes (struct gpio_set_config). This chooses 32 just to stay ahead
of future growth.

v2: Fix the length passed to rpi_firmware_property_list (by anholt,
    acked by Kees).

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.comSigned-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NEric Anholt <eric@anholt.net>
Reviewed-by: NEric Anholt <eric@anholt.net>

Since the raspberrypi-hwmon driver is tied to the VC4 firmware instead of
particular hardware its registration should be in the firmware driver.
Signed-off-by: NStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Currently there is no easy way to detect undervoltage conditions on a
remote Raspberry Pi. This hwmon driver retrieves the state of the
undervoltage sensor via mailbox interface. The handling based on
Noralf's modifications to the downstream firmware driver. In case of
an undervoltage condition only an entry is written to the kernel log.

CC: "Noralf Trønnes" <noralf@tronnes.org>
Signed-off-by: NStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: NEric Anholt <eric@anholt.net>
Acked-by: NGuenter Roeck <linux@roeck-us.net>

The "pi->dom_info" buffer is allocated in init() and it can't be NULL
here.  These tests are sort of weird as well because if "pi->dom_info"
was NULL but "domain" was non-zero then it would lead to an Oops.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>

Merge tag 'soc_drivers_for_4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into next/drivers

Keystone SOC driver update for 4.19

 -  Add suspend/resume functionality to TI EMIF SRAM driver
 -  Add wakeup M3 RTC self refresh support
 -  Fix for the PM runtime ifdefs

* tag 'soc_drivers_for_4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  soc: ti: wkup_m3_ipc: mark PM functions as __maybe_unused
  soc: ti: wkup_m3_ipc: Add wkup_m3_request_wake_src
  soc: ti: wkup_m3_ipc: Add rtc_only with ddr in self refresh mode support
  memory: ti-emif-sram: Add resume function to recopy sram code
Signed-off-by: NOlof Johansson <olof@lixom.net>

Everyone gets these #ifdefs wrong, leading to another warning here:

drivers/soc/ti/wkup_m3_ipc.c:547:12: error: 'wkup_m3_ipc_resume' defined but not used [-Werror=unused-function]
 static int wkup_m3_ipc_resume(struct device *dev)
drivers/soc/ti/wkup_m3_ipc.c:539:12: error: 'wkup_m3_ipc_suspend' defined but not used [-Werror=unused-function]
 static int wkup_m3_ipc_suspend(struct device *dev)

The easiest way to get it right is to remove all the #ifdefs and
let the compiler drop the unused functions silently after we
mark them as __maybe_unused.

Fixes: 7a872b6f ("soc: ti: wkup_m3_ipc: Add rtc_only with ddr in self refresh mode support")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@oracle.com>

Add wkup_m3_request_wake_src to allow users to get the name of
the wakeup source after a DeepSleep or Standby transition.
Signed-off-by: NDave Gerlach <d-gerlach@ti.com>
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@oracle.com>

Adds rtc_only support. This needs resume function to shutdown and
reboot the m3.
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@oracle.com>

Merge tag 'tee-drv-for-4.18' of git://git.linaro.org/people/jens.wiklander/linux-tee into next/drivers

Misc enhancement for tee driver subsystem

* Replaces getnstimeofday64() with ktime_get_real_ts64()
* Adds OPTEE_SHM_NUM_PRIV_PAGES to configure how many pages should be
  statically reserved for driver private allocations

* tag 'tee-drv-for-4.18' of git://git.linaro.org/people/jens.wiklander/linux-tee:
  tee: optee: making OPTEE_SHM_NUM_PRIV_PAGES configurable via Kconfig
  tee: replace getnstimeofday64() with ktime_get_real_ts64()
Signed-off-by: NOlof Johansson <olof@lixom.net>

This adjusts the allocator calls to use 2-factor argument call style, as
done treewide already for improved defense against allocation overflows.
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Pull btrfs fixes from David Sterba:
 "We have a few regression fixes for qgroup rescan status tracking and
  the vm_fault_t conversion that mixed up the error values"

* tag 'for-4.18-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Btrfs: fix mount failure when qgroup rescan is in progress
  Btrfs: fix regression in btrfs_page_mkwrite() from vm_fault_t conversion
  btrfs: quota: Set rescan progress to (u64)-1 if we hit last leaf

Pull vfs fix from Al Viro:
 "Followup to procfs-seq_file series this window"

This fixes a memory leak by making sure that proc seq files release any
private data on close.  The 'proc_seq_open' has to be properly paired
with 'proc_seq_release' that releases the extra private data.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  proc: add proc_seq_release

Pull staging/IIO fixes from Greg KH:
 "Here are a few small staging and IIO driver fixes for 4.18-rc3.

  Nothing major or big, all just fixes for reported problems since
  4.18-rc1. All of these have been in linux-next this week with no
  reported problems"

* tag 'staging-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: android: ion: Return an ERR_PTR in ion_map_kernel
  staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write()
  iio: imu: inv_mpu6050: Fix probe() failure on older ACPI based machines
  iio: buffer: fix the function signature to match implementation
  iio: mma8452: Fix ignoring MMA8452_INT_DRDY
  iio: tsl2x7x/tsl2772: avoid potential division by zero
  iio: pressure: bmp280: fix relative humidity unit

Pull tty/serial fixes from Greg KH:
 "Here are five fixes for the tty core and some serial drivers.

  The tty core ones fix some security and other issues reported by the
  syzbot that I have taken too long in responding to (sorry Tetsuo!).

  The 8350 serial driver fix resolves an issue of devices that used to
  work properly stopping working as they shouldn't have been added to a
  blacklist.

  All of these have been in linux-next for a few days with no reported
  issues"

* tag 'tty-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  vt: prevent leaking uninitialized data to userspace via /dev/vcs*
  serdev: fix memleak on module unload
  serial: 8250_pci: Remove stalled entries in blacklist
  n_tty: Access echo_* variables carefully.
  n_tty: Fix stall at n_tty_receive_char_special().

Pull USB fixes from Greg KH:
 "Here is a number of USB gadget and other driver fixes for 4.18-rc3.

  There's a bunch of them here, most of them being gadget driver and
  xhci host controller fixes for reported issues (as normal), but there
  are also some new device ids, and some fixes for the typec code.

  There is an acpi core patch in here that was acked by the acpi
  maintainer as it is needed for the typec fixes in order to properly
  solve a problem in that driver.

  All of these have been in linux-next this week with no reported
  issues"

* tag 'usb-4.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
  usb: chipidea: host: fix disconnection detect issue
  usb: typec: tcpm: fix logbuffer index is wrong if _tcpm_log is re-entered
  typec: tcpm: Fix a msecs vs jiffies bug
  NFC: pn533: Fix wrong GFP flag usage
  usb: cdc_acm: Add quirk for Uniden UBC125 scanner
  staging/typec: fix tcpci_rt1711h build errors
  usb: typec: ucsi: Fix for incorrect status data issue
  usb: typec: ucsi: acpi: Workaround for cache mode issue
  acpi: Add helper for deactivating memory region
  usb: xhci: increase CRS timeout value
  usb: xhci: tegra: fix runtime PM error handling
  usb: xhci: remove the code build warning
  xhci: Fix kernel oops in trace_xhci_free_virt_device
  xhci: Fix perceived dead host due to runtime suspend race with event handler
  dwc2: gadget: Fix ISOC IN DDMA PID bitfield value calculation
  usb: gadget: dwc2: fix memory leak in gadget_init()
  usb: gadget: composite: fix delayed_status race condition when set_interface
  usb: dwc2: fix isoc split in transfer with no data
  usb: dwc2: alloc dma aligned buffer for isoc split in
  usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub
  ...

Pull dma mapping fixlet from Christoph Hellwig:
 "Add a missing export required by riscv and unicore"

* tag 'dma-mapping-4.18-2' of git://git.infradead.org/users/hch/dma-mapping:
  swiotlb: export swiotlb_dma_ops

Pull parisc fixes and cleanups from Helge Deller:
 "Nothing exiting in this patchset, just

   - small cleanups of header files

   - default to 4 CPUs when building a SMP kernel

   - mark 16kB and 64kB page sizes broken

   - addition of the new io_pgetevents syscall"

* 'parisc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Build kernel without -ffunction-sections
  parisc: Reduce debug output in unwind code
  parisc: Wire up io_pgetevents syscall
  parisc: Default to 4 SMP CPUs
  parisc: Convert printk(KERN_LEVEL) to pr_lvl()
  parisc: Mark 16kB and 64kB page sizes BROKEN
  parisc: Drop struct sigaction from not exported header file

Pull ARM SoC fixes from Olof Johansson:
 "A smaller batch for the end of the week (let's see if I can keep the
  weekly cadence going for once).

  All medium-grade fixes here, nothing worrisome:

   - Fixes for some fairly old bugs around SD card write-protect
     detection and GPIO interrupt assignments on Davinci.

   - Wifi module suspend fix for Hikey.

   - Minor DT tweaks to fix inaccuracies for Amlogic platforms, one
     of which solves booting with third-party u-boot"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: dts: hikey960: Define wl1837 power capabilities
  arm64: dts: hikey: Define wl1835 power capabilities
  ARM64: dts: meson-gxl: fix Mali GPU compatible string
  ARM64: dts: meson-axg: fix ethernet stability issue
  ARM64: dts: meson-gx: fix ATF reserved memory region
  ARM64: dts: meson-gxl-s905x-p212: Add phy-supply for usb0
  ARM64: dts: meson: fix register ranges for SD/eMMC
  ARM64: dts: meson: disable sd-uhs modes on the libretech-cc
  ARM: dts: da850: Fix interrups property for gpio
  ARM: davinci: board-da850-evm: fix WP pin polarity for MMC/SD

Merge tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - introduce __diag_* macros and suppress -Wattribute-alias warnings
   from GCC 8

 - fix stack protector test script for x86_64

 - fix line number handling in Kconfig

 - document that '#' starts a comment in Kconfig

 - handle P_SYMBOL property in dump debugging of Kconfig

 - correct help message of LD_DEAD_CODE_DATA_ELIMINATION

 - fix occasional segmentation faults in Kconfig

* tag 'kbuild-fixes-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: loop boundary condition fix
  kbuild: reword help of LD_DEAD_CODE_DATA_ELIMINATION
  kconfig: handle P_SYMBOL in print_symbol()
  kconfig: document Kconfig source file comments
  kconfig: fix line numbers for if-entries in menu tree
  stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
  powerpc: Remove -Wattribute-alias pragmas
  disable -Wattribute-alias warning for SYSCALL_DEFINEx()
  kbuild: add macro for controlling warnings to linux/compiler.h

Pull x86 fixes from Ingo Molnar:
 "The biggest diffstat comes from self-test updates, plus there's entry
  code fixes, 5-level paging related fixes, console debug output fixes,
  and misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Clean up the printk()s in show_fault_oops()
  x86/mm: Drop unneeded __always_inline for p4d page table helpers
  x86/efi: Fix efi_call_phys_epilog() with CONFIG_X86_5LEVEL=y
  selftests/x86/sigreturn: Do minor cleanups
  selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
  x86/entry/64/compat: Fix "x86/entry/64/compat: Preserve r8-r11 in int $0x80"
  x86/mm: Don't free P4D table when it is folded at runtime
  x86/entry/32: Add explicit 'l' instruction suffix
  x86/mm: Get rid of KERN_CONT in show_fault_oops()

Pull perf fixes from Ingo Molnar:
 "Tooling fixes mostly, plus a build warning fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  perf/core: Move inline keyword at the beginning of declaration
  tools/headers: Pick up latest kernel ABIs
  perf tools: Fix crash caused by accessing feat_ops[HEADER_LAST_FEATURE]
  perf script: Fix crash because of missing evsel->priv
  perf script: Add missing output fields in a hint
  perf bench: Fix numa report output code
  perf stat: Remove duplicate event counting
  perf alias: Rebuild alias expression string to make it comparable
  perf alias: Remove trailing newline when reading sysfs files
  perf tools: Fix a clang 7.0 compilation error
  tools include uapi: Synchronize bpf.h with the kernel
  tools include uapi: Update if_link.h to pick IFLA_{BRPORT_ISOLATED,VXLAN_TTL_INHERIT}
  tools include powerpc: Update arch/powerpc/include/uapi/asm/unistd.h copy to get 'rseq' syscall
  perf tools: Update x86's syscall_64.tbl, adding 'io_pgetevents' and 'rseq'
  tools headers uapi: Synchronize drm/drm.h
  perf intel-pt: Fix packet decoding of CYC packets
  perf tests: Add valid callback for parse-events test
  perf tests: Add event parsing error handling to parse events test
  perf report powerpc: Fix crash if callchain is empty
  perf test session topology: Fix test on s390
  ...