The ACPI_HANDLE() macro is a wrapper arond the ACPI_COMPANION()
macro and the ACPI handle produced by the former comes from the
ACPI device object produced by the latter, so it is way more
straightforward to evaluate the latter directly instead of passing
the handle produced by the former to acpi_bus_get_device().

Modify i2c_amd_probe() accordingly (no intentional functional impact).
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Add PCI ID of SMBus controller on Intel Ice Lake PCH-N.

The device can be found on MacBookPro16,2 [1].

[1]: https://linux-hardware.org/?probe=f1c5cf0c43Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Due to changes in my work, I'm passing the virtio-i2c driver
maintenance to Conghui.
Signed-off-by: Jie Deng <jie.deng@intel.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

A successful 'clk_prepare()' call should be balanced by a corresponding
'clk_unprepare()' call in the error handling path of the probe, as already
done in the remove function.

More specifically, 'clk_prepare_enable()' is used, but 'clk_disable()' is
also already called. So just the unprepare step has still to be done.

Update the error handling path accordingly.

Fixes: 75d31c23 ("i2c: xlr: add support for Sigma Designs controller variant")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable because of requesting.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Correct the typo of "reamining" to "remaining".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Tegra I2C device isn't guaranteed to be suspended after removal of
the driver since driver uses pm_runtime_put() that is asynchronous and
pm_runtime_disable() cancels pending power-change requests. This means
that potentially refcount of the clocks may become unbalanced after
removal of the driver. This a very minor problem which unlikely to
happen in practice and won't cause any visible problems, nevertheless
let's replace pm_runtime_disable() with pm_runtime_force_suspend() and
use pm_runtime_put_sync() which disables RPM of the device and puts it
into suspend before driver is removed.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Merge tag 'at24-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-mergewindow

at24 updates for v5.16

- add two new compatible entries to the DT bindings

Commit a6b8bb6a ("i2c: i801: Fix handling SMBHSTCNT_PEC_EN")
attempts to disable software PEC by clearing the SMBHSTCNT_PEC_EN (bit 7)
in the SMBus Host Control register (I/O SMBHSTCNT) but incorrectly
clears it in the PCI Host Configuration register (PCI SMBHSTCFG).

This clearing is actually needless since after above commit the
SMBHSTCNT_PEC_EN is never set and the register is initialized with known
values.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

When a timeout error occurs in i2c transter, it is usually related
to the i2c/dma IP hardware configuration. Therefore, the purpose of
this patch is to dump the key register values of i2c/dma when a
timeout occurs in i2c for debugging.
Signed-off-by: Kewei Xu <kewei.xu@mediatek.com>
Reviewed-by: Qii Wang <qii.wang@mediatek.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Due to changes in the hardware design of the handshaking signal
between i2c and dma, it is necessary to reset the handshaking
signal before each transfer to ensure that the multi-msgs can
be transferred correctly.
Signed-off-by: Kewei Xu <kewei.xu@mediatek.com>
Reviewed-by: Qii Wang <qii.wang@mediatek.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Allow polling time setting according to I2C frequency supported across
the system. For base frequency 400 KHz and 1 MHz set polling time is set
four times less than for system with base frequency 100KHz.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Some later revisions after the original PASemi I2C controller introduce
what likely is an enable bit to the CTL register. Without setting it the
actual i2c transmission is never started.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

With all the previous preparations we can now finally add
the platform driver to support the PASemi-based controllers
in Apple SoCs. This does not work on the M1 yet but should
work on the early iPhones already.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Using managed device resources means there's nothing left to be done in
pasemi_smb_pci_remove and also allows to remove base and size from
struct pasemi_smbus.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Right now the bus frequency has always been hardcoded as
100 KHz with the specific reference clock used in the PASemi
PCI controllers. Make this configurable to prepare for the
platform driver.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Split out common reset call to its own function so that we
can later add support for selecting the clock frequency
and an additional enable bit found in newer revisions.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Split off the PCI driver so that we can reuse common code for the
platform driver.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Split off common probing code that will be used by both the PCI and the
platform device.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Prepare to create a platform driver by removing all usages of pci_dev we
can.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Right now the i2c adapter name includes the port number which can
indirectly be used to identify the device. Replace that with dev_name
to directly identify the device and to also allow this to work correctly
once we add platform support.
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

In preparation for splitting this driver up into a platform_driver
and a pci_driver, replace outl/inl usage with pci_iomap and
ioread32/iowrite32.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

The Apple I2C controller is based on the PASemi I2C controller.
It is present on Apple SoCs such as the M1.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Pull powerpc fixes from Michael Ellerman:
 "A bit of a big batch, partly because I didn't send any last week, and
  also just because the BPF fixes happened to land this week.

  Summary:

   - Fix a regression hit by the IPR SCSI driver, introduced by the
     recent addition of MSI domains on pseries.

   - A big series including 8 BPF fixes, some with potential security
     impact and the rest various code generation issues.

   - Fix our program check assembler entry path, which was accidentally
     jumping into a gas macro and generating strange stack frames, which
     could confuse find_bug().

   - A couple of fixes, and related changes, to fix corner cases in our
     machine check handling.

   - Fix our DMA IOMMU ops, which were not always returning the optimal
     DMA mask, leading to at least one device falling back to 32-bit DMA
     when it shouldn't.

   - A fix for KUAP handling on 32-bit Book3S.

   - Fix crashes seen when kdumping on some pseries systems.

  Thanks to Naveen N. Rao, Nicholas Piggin, Alexey Kardashevskiy, Cédric
  Le Goater, Christophe Leroy, Mahesh Salgaonkar, Abdul Haleem,
  Christoph Hellwig, Johan Almbladh, Stan Johnson"

* tag 'powerpc-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  pseries/eeh: Fix the kdump kernel crash during eeh_pseries_init
  powerpc/32s: Fix kuap_kernel_restore()
  powerpc/pseries/msi: Add an empty irq_write_msi_msg() handler
  powerpc/64s: Fix unrecoverable MCE calling async handler from NMI
  powerpc/64/interrupt: Reconcile soft-mask state in NMI and fix false BUG
  powerpc/64: warn if local irqs are enabled in NMI or hardirq context
  powerpc/traps: do not enable irqs in _exception
  powerpc/64s: fix program check interrupt emergency stack path
  powerpc/bpf ppc32: Fix BPF_SUB when imm == 0x80000000
  powerpc/bpf ppc32: Do not emit zero extend instruction for 64-bit BPF_END
  powerpc/bpf ppc32: Fix JMP32_JSET_K
  powerpc/bpf ppc32: Fix ALU32 BPF_ARSH operation
  powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC
  powerpc/security: Add a helper to query stf_barrier type
  powerpc/bpf: Fix BPF_SUB when imm == 0x80000000
  powerpc/bpf: Fix BPF_MOD when imm == 1
  powerpc/bpf: Validate branch ranges
  powerpc/lib: Add helper to check if offset is within conditional branch range
  powerpc/iommu: Report the correct most efficient DMA mask for PCI devices

Pull objtool fixes from Borislav Petkov:

 - Remove an extra section.len member in favour of section.sh_size

 - Align .altinstructions section creation with the kernel's by creating
   them with entry size of 0

 - Fix objtool to convert a reloc symbol to a section offset and not to
   not warn about not knowing how

* tag 'objtool_urgent_for_v5.15_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Remove redundant 'len' field from struct section
  objtool: Make .altinstructions section entry size consistent
  objtool: Remove reloc symbol type checks in get_alt_entry()

Pull x86 fixes from Borislav Petkov:

 - A FPU fix to properly handle invalid MXCSR values: 32-bit masks them
   out due to historical reasons and 64-bit kernels reject them

 - A fix to clear X86_FEATURE_SMAP when support for is not
   config-enabled

 - Three fixes correcting misspelled Kconfig symbols used in code

 - Two resctrl object cleanup fixes

 - Yet another attempt at fixing the neverending saga of botched x86
   timers, this time because some incredibly smart hardware decides to
   turn off the HPET timer in a low power state - who cares if the OS is
   relying on it...

 - Check the full return value range of an SEV VMGEXIT call to determine
   whether it returned an error

* tag 'x86_urgent_for_v5.15_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Restore the masking out of reserved MXCSR bits
  x86/Kconfig: Correct reference to MWINCHIP3D
  x86/platform/olpc: Correct ifdef symbol to intended CONFIG_OLPC_XO15_SCI
  x86/entry: Clear X86_FEATURE_SMAP when CONFIG_X86_SMAP=n
  x86/entry: Correct reference to intended CONFIG_64_BIT
  x86/resctrl: Fix kfree() of the wrong type in domain_add_cpu()
  x86/resctrl: Free the ctrlval arrays when domain_setup_mon_state() fails
  x86/hpet: Use another crystalball to evaluate HPET usability
  x86/sev: Return an error on a returned non-zero SW_EXITINFO1[31:0]

Pull i2c fixes from Wolfram Sang:
 "Three driver bugfixes and one leak fix for the core"

* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mlxcpld: Modify register setting for 400KHz frequency
  i2c: mlxcpld: Fix criteria for frequency setting
  i2c: mediatek: Add OFFSET_EXT_CONF setting back
  i2c: acpi: fix resource leak in reconfiguration device addition

Pull SCSI fixes from James Bottomley:
 "Five fixes, all in drivers.

  The big change is the UFS task management rework, with lpfc next and
  the rest being fairly minor and obvious fixes"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi: Fix iscsi_task use after free
  scsi: lpfc: Fix memory overwrite during FC-GS I/O abort handling
  scsi: elx: efct: Delete stray unlock statement
  scsi: ufs: core: Fix task management completion
  scsi: acornscsi: Remove scsi_cmd_to_tag() reference

Pull block fixes from Jens Axboe:
 "Two small fixes for this release:

   - Add missing QUEUE_FLAG_HCTX_ACTIVE in the debugfs handling
     (Johannes)

   - Fix double free / UAF issue in __alloc_disk_node (Tetsuo)"

* tag 'block-5.15-2021-10-09' of git://git.kernel.dk/linux-block:
  block: decode QUEUE_FLAG_HCTX_ACTIVE in debugfs output
  block: genhd: fix double kfree() in __alloc_disk_node()

Pull ksmbd fixes from Steve French:
 "Six fixes for the ksmbd kernel server, including two additional
  overflow checks, a fix for oops, and some cleanup (e.g. remove dead
  code for less secure dialects that has been removed)"

* tag '5.15-rc4-ksmbd-fixes' of git://git.samba.org/ksmbd:
  ksmbd: fix oops from fuse driver
  ksmbd: fix version mismatch with out of tree
  ksmbd: use buf_data_size instead of recalculation in smb3_decrypt_req()
  ksmbd: remove the leftover of smb2.0 dialect support
  ksmbd: check strictly data area in ksmbd_smb2_check_message()
  ksmbd: add the check to vaildate if stream protocol length exceeds maximum value

Pull RISC-V fixes from Palmer Dabbelt:

 - A pair of fixes (along with the necessory cleanup) to our VDSO, to
   avoid a locking during OOM and to prevent the text from overflowing
   into the data page

 - A fix to checksyscalls to teach it about our rv32 UABI

 - A fix to add clone3() to the rv32 UABI, which was pointed out by
   checksyscalls

 - A fix to properly flush the icache on the local CPU in addition to
   the remote CPUs

* tag 'riscv-for-linus-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  checksyscalls: Unconditionally ignore fstat{,at}64
  riscv: Flush current cpu icache before other cpus
  RISC-V: Include clone3() on rv32
  riscv/vdso: make arch_setup_additional_pages wait for mmap_sem for write killable
  riscv/vdso: Move vdso data page up front
  riscv/vdso: Refactor asm/vdso.h

Pull s390 fixes from Vasily Gorbik:

 - Fix potential memory leak on a error path in eBPF

 - Fix handling of zpci device on reserve

* tag 's390-5.15-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pci: fix zpci_zdev_put() on reserve
  bpf, s390: Fix potential memory leak about jit_data

Pull xtensa fixes from Max Filippov:

 - fix build/boot issues caused by CONFIG_OF vs CONFIC_USE_OF usage

 - fix reset handler for xtfpga boards

* tag 'xtensa-20211008' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: xtfpga: Try software restart before simulating CPU reset
  xtensa: xtfpga: use CONFIG_USE_OF instead of CONFIG_OF
  xtensa: call irqchip_init only when CONFIG_USE_OF is selected
  xtensa: use CONFIG_USE_OF instead of CONFIG_OF

Pull xen fixes from Juergen Gross:

 - fix two minor issues in the Xen privcmd driver plus a cleanup patch
   for that driver

 - fix multiple issues related to running as PVH guest and some related
   earlyprintk fixes for other Xen guest types

 - fix an issue introduced in 5.15 the Xen balloon driver

* tag 'for-linus-5.15b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/balloon: fix cancelled balloon action
  xen/x86: adjust data placement
  x86/PVH: adjust function/data placement
  xen/x86: hook up xen_banner() also for PVH
  xen/x86: generalize preferred console model from PV to PVH Dom0
  xen/x86: make "earlyprintk=xen" work for HVM/PVH DomU
  xen/x86: allow "earlyprintk=xen" to work for PV Dom0
  xen/x86: make "earlyprintk=xen" work better for PVH Dom0
  xen/x86: allow PVH Dom0 without XEN_PV=y
  xen/x86: prevent PVH type from getting clobbered
  xen/privcmd: drop "pages" parameter from xen_remap_pfn()
  xen/privcmd: fix error handling in mmap-resource processing
  xen/privcmd: replace kcalloc() by kvcalloc() when allocating empty pages

Merge tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic fixes from Arnd Bergmann:
 "There is one build fix for Arm platforms that ended up impacting most
  architectures because of the way the drivers/firmware Kconfig file is
  wired up:

  The CONFIG_QCOM_SCM dependency have caused a number of randconfig
  regressions over time, and some still remain in v5.15-rc4. The fix we
  agreed on in the end is to make this symbol selected by any driver
  using it, and then building it even for non-Arm platforms with
  CONFIG_COMPILE_TEST.

  To make this work on all architectures, the drivers/firmware/Kconfig
  file needs to be included for all architectures to make the symbol
  itself visible.

  In a separate discussion, we found that a sound driver patch that is
  pending for v5.16 needs the same change to include this Kconfig file,
  so the easiest solution seems to have my Kconfig rework included in
  v5.15.

  Finally, the branch also includes a small unrelated build fix for
  NOMMU architectures"

Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/
Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/
Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/

* tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere
  qcom_scm: hide Kconfig symbol
  firmware: include drivers/firmware/Kconfig unconditionally

Pull ACPI fix from Rafael Wysocki:
 "Fix a recent ACPI-related regression in the PCI subsystem that
  introduced a NULL pointer dereference possible to trigger from
  user space via sysfs on some systems"

* tag 'acpi-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI: ACPI: Check parent pointer in acpi_pci_find_companion()

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for 5.15-rc5 that resolve a number of
  reported issues:

   - gadget driver fixes

   - xhci build warning fixes

   - build configuration fix

   - cdc-acm tty handling fixes

   - cdc-wdm fix

   - typec fixes

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

* tag 'usb-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: cdc-acm: fix break reporting
  USB: cdc-acm: fix racy tty buffer accesses
  usb: gadget: f_uac2: fixed EP-IN wMaxPacketSize
  usb: cdc-wdm: Fix check for WWAN
  usb: chipidea: ci_hdrc_imx: Also search for 'phys' phandle
  usb: typec: tcpm: handle SRC_STARTUP state if cc changes
  usb: typec: tcpci: don't handle vSafe0V event if it's not enabled
  usb: typec: tipd: Remove dependency on "connector" child fwnode
  Partially revert "usb: Kconfig: using select for USB_COMMON dependency"
  usb: dwc3: gadget: Revert "set gadgets parent to the right controller"
  usb: xhci: tegra: mark PM functions as __maybe_unused

Pull MMC fixes from Ulf Hansson:
 "A couple of MMC host fixes:

   - meson-gx: Fix read/write access for dram-access-quirk

   - sdhci-of-at91: Fix calibration sequence"

* tag 'mmc-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: meson-gx: do not use memcpy_to/fromio for dram-access-quirk
  mmc: sdhci-of-at91: replace while loop with read_poll_timeout
  mmc: sdhci-of-at91: wait for calibration done before proceed