__cmpxchg64_local_generic() is atomic only w.r.t tasks and interrupts
on the same CPU (that's what the 'local' means).  We can't use it to
implement cmpxchg64() in SMP configurations.

So, for 32-bit SMP configurations:

- Don't define cmpxchg64()
- Don't enable HAVE_VIRT_CPU_ACCOUNTING_GEN, which requires it

Fixes: e2093c7b ("MIPS: Fall back to generic implementation of ...")
Fixes: bb877e96 ("MIPS: Add support for full dynticks CPU time accounting")
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Deng-Cheng Zhu <dengcheng.zhu@mips.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.1+
Patchwork: https://patchwork.linux-mips.org/patch/17413/Signed-off-by: NJames Hogan <jhogan@kernel.org>

HW interrupts triggered when irq_disable() were being ignored. Enable
resending HW interrupts as SW interrupts.

This was causing an issue where the interrupts waking the system up from
a suspend state were not calling their interrupt handlers.
Signed-off-by: NJustin Chen <justinpopo6@gmail.com>
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16116/Signed-off-by: NJames Hogan <jhogan@kernel.org>

There are a few defines that manully shift a bit. Change these to using
the BIT() macro.
Signed-off-by: NJohn Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15322/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Switch the printk() call to the prefered pr_warn() api.

Fixes: 7e5873d3 ("MIPS: pci: Add MT7620a PCIE driver")
Signed-off-by: NJohn Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.5+
Patchwork: https://patchwork.linux-mips.org/patch/15321/Signed-off-by: NJames Hogan <jhogan@kernel.org>

An invalid and duplicate define has gone unnoticed for some time. lets
remove it. The correct define is 3 lines below.

Fixes: 7e5873d3 ("MIPS: pci: Add MT7620a PCIE driver")
Signed-off-by: NJohn Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15320/Signed-off-by: NJames Hogan <jhogan@kernel.org>

There is a typo inside the pinmux setup code. The function is called
refclk and not reclk.

Fixes: 53263a1c ("MIPS: ralink: add mt7628an support")
Signed-off-by: NMathias Kresin <dev@kresin.me>
Acked-by: NJohn Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.19+
Patchwork: https://patchwork.linux-mips.org/patch/16047/Signed-off-by: NJames Hogan <jhogan@kernel.org>

According to the datasheet the REFCLK pin is shared with GPIO#37 and
the PERST pin is shared with GPIO#36.

Fixes: 53263a1c ("MIPS: ralink: add mt7628an support")
Signed-off-by: NMathias Kresin <dev@kresin.me>
Acked-by: NJohn Crispin <john@phrozen.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.19+
Patchwork: https://patchwork.linux-mips.org/patch/16046/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Building 32-bit MIPS64r2 kernels produces warnings like the following
on certain toolchains (such as GNU assembler 2.24.90, but not GNU
assembler 2.28.51) since commit 22b8ba76 ("MIPS: Fix MIPS64 FP
save/restore on 32-bit kernels"), due to the exposure of fpu_save_16odd
from fpu_save_double and fpu_restore_16odd from fpu_restore_double:

arch/mips/kernel/r4k_fpu.S:47: Warning: float register should be even, was 1
...
arch/mips/kernel/r4k_fpu.S:59: Warning: float register should be even, was 1
...

This appears to be because .set mips64r2 does not change the FPU ABI to
64-bit when -march=mips64r2 (or e.g. -march=xlp) is provided on the
command line on that toolchain, from the default FPU ABI of 32-bit due
to the -mabi=32. This makes access to the odd FPU registers invalid.

Fix by explicitly changing the FPU ABI with .set fp=64 directives in
fpu_save_16odd and fpu_restore_16odd, and moving the undefine of fp up
in asmmacro.h so fp doesn't turn into $30.

Fixes: 22b8ba76 ("MIPS: Fix MIPS64 FP save/restore on 32-bit kernels")
Signed-off-by: NJames Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.0+: 22b8ba76: MIPS: Fix MIPS64 FP save/restore on 32-bit kernels
Cc: <stable@vger.kernel.org> # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/17656/

This driver works for jz4740 & jz4780.
Suggested-by: NMaarten ter Huurne <maarten@treewalker.org>
Signed-off-by: NMathieu Malaterre <malat@debian.org>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: linux-mips@linux-mips.org
Cc: linux-watchdog@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17251/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Update the thread_info::syscall field when registers are modified via
ptrace to change or cancel the system call being entered.

This is important to allow seccomp and the syscall entry and exit trace
events to observe the new syscall number changed by the normal ptrace
hook or seccomp. That includes allowing seccomp's recheck of the system
call number after SECCOMP_RET_TRACE to notice if the syscall is changed
to a denied one, which happens in seccomp since commit ce6526e8
("seccomp: recheck the syscall after RET_TRACE") in v4.8.

In the process of doing this, the logic to determine whether an indirect
system call is in progress (i.e. the O32 ABI's syscall()) is abstracted
into mips_syscall_is_indirect(), and a new mips_syscall_update_nr() is
used to update the thread_info::syscall based on the register state.

The following ptrace operations are updated:
 - PTRACE_SETREGS (ptrace_setregs()).
 - PTRACE_SETREGSET with NT_PRSTATUS (gpr32_set() and gpr64_set()).
 - PTRACE_POKEUSR with 2/v0 or 4/a0 for indirect syscall
   ([compat_]arch_ptrace()).

Fixes: c2d9f177 ("MIPS: Fix syscall_get_nr for the syscall exit tracing.")
Signed-off-by: NJames Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Lars Persson <larper@axis.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Will Drewry <wad@chromium.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16995/

The MIPS syscall_trace_enter() allows the system call number to be
altered or cancelled by a ptrace tracer, via the normal ptrace hook
(PTRACE_SYSCALL) and changing the system call number register on entry,
and similarly via seccomp (PTRACE_EVENT_SECCOMP when a seccomp filter
returns SECCOMP_RET_TRACE).

Be sure to update the syscall local variable if this happens, so that
seccomp will filter the correct system call number if the normal ptrace
hook changes it first, and so that if either the normal ptrace hook or
seccomp change it the correct system call number is passed to the trace
event.

This won't have any effect until the next commit, which fixes ptrace to
update thread_info::syscall.

Fixes: c2d9f177 ("MIPS: Fix syscall_get_nr for the syscall exit tracing.")
Signed-off-by: NJames Hogan <jhogan@kernel.org>
Reviewed-by: NKees Cook <keescook@chromium.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Lars Persson <lars.persson@axis.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Will Drewry <wad@chromium.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16996/

Fix a commit 7aeb753b ("MIPS: Implement task_user_regset_view.")
regression, then activated by commit 6a9c001b ("MIPS: Switch ELF
core dumper to use regsets.)", that caused n32 processes to dump o32
core files by failing to set the EF_MIPS_ABI2 flag in the ELF core file
header's `e_flags' member:

$ file tls-core
tls-core: ELF 32-bit MSB executable, MIPS, N32 MIPS64 rel2 version 1 (SYSV), [...]
$ ./tls-core
Aborted (core dumped)
$ file core
core: ELF 32-bit MSB core file MIPS, MIPS-I version 1 (SYSV), SVR4-style
$

Previously the flag was set as the result of a:

statement placed in arch/mips/kernel/binfmt_elfn32.c, however in the
regset case, i.e. when CORE_DUMP_USE_REGSET is set, ELF_CORE_EFLAGS is
no longer used by `fill_note_info' in fs/binfmt_elf.c, and instead the
`->e_flags' member of the regset view chosen is.  We have the views
defined in arch/mips/kernel/ptrace.c, however only an o32 and an n64
one, and the latter is used for n32 as well.  Consequently an o32 core
file is incorrectly dumped from n32 processes (the ELF32 vs ELF64 class
is chosen elsewhere, and the 32-bit one is correctly selected for n32).

Correct the issue then by defining an n32 regset view and using it as
appropriate.  Issue discovered in GDB testing.

Fixes: 7aeb753b ("MIPS: Implement task_user_regset_view.")
Signed-off-by: NMaciej W. Rozycki <macro@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Djordje Todorovic <djordje.todorovic@rt-rk.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.13+
Patchwork: https://patchwork.linux-mips.org/patch/17617/Signed-off-by: NJames Hogan <jhogan@kernel.org>

32-bit kernels can be configured to support MIPS64, in which case
neither CONFIG_64BIT or CONFIG_CPU_MIPS32_R* will be set. This causes
the CP0_Status.FR checks at the point of floating point register save
and restore to be compiled out, which results in odd FP registers not
being saved or restored to the task or signal context even when
CP0_Status.FR is set.

Fix the ifdefs to use CONFIG_CPU_MIPSR2 and CONFIG_CPU_MIPSR6, which are
enabled for the relevant revisions of either MIPS32 or MIPS64, along
with some other CPUs such as Octeon (r2), Loongson1 (r2), XLP (r2),
Loongson 3A R2.

The suspect code originates from commit 597ce172 ("MIPS: Support for
64-bit FP with O32 binaries") in v3.14, however the code in
__enable_fpu() was consistent and refused to set FR=1, falling back to
software FPU emulation. This was suboptimal but should be functionally
correct.

Commit fcc53b5f ("MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6
CPU") in v4.2 (and stable tagged back to 4.0) later introduced the bug
by updating __enable_fpu() to set FR=1 but failing to update the other
similar ifdefs to enable FR=1 state handling.

Fixes: fcc53b5f ("MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU")
Signed-off-by: NJames Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/16739/

Define virt_to_pfn() based on the existing definition of virt_to_page()
which already does a PFN_DOWN(vir_to_phys(kaddr)).
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15409/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Use the generic platform code and remove arch/mips/xilfpga
Signed-off-by: NZubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15847/
[jhogan@kernel.org: Update arch/mips/Makefile snippet and move to end]
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Add support for the MIPSfpga platform to generic kernel.
Signed-off-by: NZubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15846/
[jhogan@kernel.org: Use separate board-xilfpga.its.S. Add 32r2 and
 little endian requires to board-xilfpga.config]
Signed-off-by: NJames Hogan <jhogan@kernel.org>

The default system type should be a MIPS generic kernel. In order to
include some level of board support, select a 32r2el generic defconfig
by default. The alternative would be to use "generic_defconfig" but
rather unintuitvely that is a bare bones configuration with no platform
support so is not usable in practice.
Signed-off-by: NMatt Redfearn <matt.redfearn@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14715/Signed-off-by: NJames Hogan <jhogan@kernel.org>

The generic MIPS system type allows building a board agnostic kernel and
should be the default starting point for users, so set it as the default
system type in Kconfig.

Since ip22 is no longer the default, update ip22_defconfig to select
CONFIG_SGI_IP22.
Signed-off-by: NMatt Redfearn <matt.redfearn@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14714/Signed-off-by: NJames Hogan <jhogan@kernel.org>

dwmmc driver deprecated num-slots and plan to get rid of it finally.
Just move a step to cleanup it from DT.

Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Acked-by: NJames Hartley <james.hartley@sondrel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16741/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Use setup_timer function instead of initializing timer with the function
and data fields.
Signed-off-by: NAllen Pais <allen.lkml@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17341/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Optimize `__read_64bit_c0_split' and reduce the instruction count by 1,
observing that a DSLL/DSRA pair by 32, is equivalent to SLL by 0, which
architecturally truncates the value requested to 32 bits on 64-bit MIPS
hardware regardless of whether the input operand is or is not a properly
sign-extended 32-bit value.
Signed-off-by: NMaciej W. Rozycki <macro@imgtec.com>
Reviewed-by: NJames Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17399/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Building an allnoconfig kernel based on the ralink platform results in
the following warning:

warning: (SOC_RT305X) selects USB_ARCH_HAS_HCD which has unmet direct dependencies (USB_SUPPORT)

This is because SOC_RT305X unconditionally selects USB_ARCH_HAS_HCD
which depends on USB_SUPPORT.

However USB_ARCH_HAS_HCD has been effectively obsolete since commit
d9ea21a7 ("usb: host: make USB_ARCH_HAS_?HCI obsolete") in 3.11.
USB_ARCH_HAS_HCD is now set by default whenever USB_SUPPORT is, so drop
the select to silence the warning.
Signed-off-by: NJames Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17618/

The WLAN LED on the Linksys WRT54GSv1 is active low, but the software
treats it as active high. Fix the inverted logic.

Fixes: 7bb26b16 ("MIPS: BCM47xx: Fix LEDs on WRT54GS V1.0")
Signed-off-by: NMirko Parthey <mirko.parthey@web.de>
Looks-ok-by: NRafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.17+
Patchwork: https://patchwork.linux-mips.org/patch/16071/Signed-off-by: NJames Hogan <jhogan@kernel.org>

ASC1 is available on every Lantiq SoC (also AmazonSE) and should be
enabled like the other generic xway clocks instead of ASC0, which is
only available for AR9 and Danube.
Signed-off-by: NMartin Schiller <ms@dev.tdt.de>
Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Martin Schiller <ms@dev.tdt.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16145/
[jhogan@kernel.org: Drop braces]
Signed-off-by: NJames Hogan <jhogan@kernel.org>

While the current kernel code in drivers/of/ allows developers to be
sloppy and use the status value "ok", the current DTSpec 0.1 makes it
clear that the only officially proper spelling is "okay", so adjust
the very small number of DTS files under arch/mips/.
Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17227/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Make the secondary switch clocks their own clocks. This allows proper
enable reference counting between SAR/XTM and the main switch clocks,
and controlling them individually from drivers.
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17332/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Add lookups to provide the appropriate enetX clocks as just "enet" to
the ethernet devices.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17331/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Split up the HSSPL clock into rate and a gate clock, to more closely
match the actual hardware.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17330/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Add the clock name to the uart nodes, to name the input clock
properly.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17329/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Codify using a named clock for the refclk of the uart. This makes it
easier if we might need to add a gating clock (like present on the
BCM6345).
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17328/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

We now have the clock available under refclk, so use that.
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17327/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Add a lookup as "refclk" to describe its function for the uarts.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17326/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Enable clkdev lookup support to allow us providing clocks under
different names to devices more easily, so we don't need to care
about clock name clashes anymore.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NJonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17325/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Make these const as they are only stored in the "const " ops field of a
clk_init_data structure.

Structure found using Coccinelle and changes done by hand.
Signed-off-by: NBhumika Goyal <bhumirks@gmail.com>
Cc: julia.lawall@lip6.fr
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17374/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJames Hogan <jhogan@kernel.org>

Fix occurences of unsigned integer variable declarations that are
not preferred by standards of checkpatch scripts. This removes a
significant number of checkpatch warnings for files in math-emu
directory (several files become completely warning-free), and thus
makes easier to spot (now and in the future) other, perhaps more
significant, checkpatch errors and warnings.
Signed-off-by: NAleksandar Markovic <aleksandar.markovic@mips.com>
Reviewed-by: NJames Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Douglas Leung <douglas.leung@mips.com>
Cc: Goran Ferenc <goran.ferenc@mips.com>
Cc: "Maciej W. Rozycki" <macro@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Miodrag Dinic <miodrag.dinic@mips.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petar Jovanovic <petar.jovanovic@mips.com>
Cc: Raghu Gandham <raghu.gandham@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17582/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Fix final phase of <CLASS|MADDF|MSUBF|MAX|MIN|MAXA|MINA>.<D|S>
emulation. Provide proper generation of SIGFPE signal and updating
debugfs FP exception stats in cases of any exception flags set in
preceding phases of emulation.

CLASS.<D|S> instruction may generate "Unimplemented Operation" FP
exception. <MADDF|MSUBF>.<D|S> instructions may generate "Inexact",
"Unimplemented Operation", "Invalid Operation", "Overflow", and
"Underflow" FP exceptions. <MAX|MIN|MAXA|MINA>.<D|S> instructions
can generate "Unimplemented Operation" and "Invalid Operation" FP
exceptions.

The proper final processing of the cases when any FP exception
flag is set is achieved by replacing "break" statement with "goto
copcsr" statement. With such solution, this patch brings the final
phase of emulation of the above instructions consistent with the
one corresponding to the previously implemented emulation of other
related FPU instructions (ADD, SUB, etc.).

Fixes: 38db37ba ("MIPS: math-emu: Add support for the MIPS R6 CLASS FPU instruction")
Fixes: e24c3bec ("MIPS: math-emu: Add support for the MIPS R6 MADDF FPU instruction")
Fixes: 83d43305 ("MIPS: math-emu: Add support for the MIPS R6 MSUBF FPU instruction")
Fixes: a79f5f9b ("MIPS: math-emu: Add support for the MIPS R6 MAX{, A} FPU instruction")
Fixes: 4e9561b2 ("MIPS: math-emu: Add support for the MIPS R6 MIN{, A} FPU instruction")
Signed-off-by: NAleksandar Markovic <aleksandar.markovic@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Douglas Leung <douglas.leung@mips.com>
Cc: Goran Ferenc <goran.ferenc@mips.com>
Cc: "Maciej W. Rozycki" <macro@imgtec.com>
Cc: Miodrag Dinic <miodrag.dinic@mips.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petar Jovanovic <petar.jovanovic@mips.com>
Cc: Raghu Gandham <raghu.gandham@mips.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.3+
Patchwork: https://patchwork.linux-mips.org/patch/17581/Signed-off-by: NJames Hogan <jhogan@kernel.org>

Signed-off-by: NSteven J. Hill <steven.hill@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17389/Signed-off-by: NJames Hogan <jhogan@kernel.org>

In systems where the CPU id space is sparse, this allows a smaller
NR_CPUS to be chosen, thus keeping internal data structures smaller.
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NCarlos Munoz <cmunoz@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17388/
[jhogan@kernel.org: Add depends on SMP to fix
 "warning: symbol value '' invalid for MIPS_NR_CPU_NR_MAP"]
Signed-off-by: NJames Hogan <jhogan@kernel.org>

The jz4740-watchdog driver supports both jz4740 & jz4780.
Signed-off-by: NMathieu Malaterre <malat@debian.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17291/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Update the Ci20's defconfig to enable the JZ4740's watchdog driver.
Signed-off-by: NMathieu Malaterre <malat@debian.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17290/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>