MIPS: Remove redundant definitions of device_tree_init()

There exists many same definitions of device_tree_init() for various
platforms, add a weak function in arch/mips/kernel/prom.c to clean
up the related code.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

MIPS: ath79: add support for QCN550x

Adds support for QCN550x, which appears to be very similar to QCA956x.

Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

MIPS: ath79: drop _machine_restart again

Commit 81424d0ad0d4 ("MIPS: ath79: Use the reset controller to restart
OF machines") removed setup of _machine_restart on OF machines to use
reset handler in reset controller driver.
While removing remnants of non-OF machines in commit 3a77e0d75eed
("MIPS: ath79: drop machfiles"), this was introduced again, making it
impossible to use additional restart handlers registered through device
tree. Drop setting _machine_restart altogether, and ath79_restart
function, which is no longer used after this.

Fixes: 3a77e0d75eed ("MIPS: ath79: drop machfiles")
Cc: John Crispin <john@phrozen.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

MIPS: of: Introduce helper function to get DTB

Selection of the DTB to be used was burried in more or less readable
code in head.S. Move this code into a inline helper function and
use it.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>

MIPS: ath79: Remove unused include <asm/mips_machine.h>

Since commit 3a77e0d75eed ("MIPS: ath79: drop machfiles"), this header
is not used anymore.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

MIPS: Use fallthrough for arch/mips

Convert the various /* fallthrough */ comments to the pseudo-keyword
fallthrough;

Done via script:
https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe@perches.com/

Signed-off-by: Liangliang Huang <huangll@lemote.com>
Reviewed-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

MIPS: ath79: Replace <linux/clk-provider.h> by <linux/of_clk.h>

The Atheros 7/9xxx platform code is not a clock provider, and just needs
to call of_clk_init().

Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: James Hartley <james.hartley@sondrel.com>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: linux-clk@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

remove ioremap_nocache and devm_ioremap_nocache

ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

MIPS: fix some more fall through errors in arch/mips

Fix these errors:

arch/mips/cavium-octeon/executive/cvmx-pko.c:489:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
arch/mips/bcm63xx/dev-flash.c:89:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
arch/mips/ath79/setup.c:155:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
arch/mips/ar7/setup.c:50:3: error: this statement may fall through [-Werror=implicit-fallthrough=]

Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Crispin <john@phrozen.org>
Cc: Matthias Schiffer <mschiffer@universe-factory.net>
Cc: "Petr Štetiar" <ynezz@true.cz>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Burton <paul.burton@mips.com>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

clk: Remove io.h from clk-provider.h

Now that we've gotten rid of clk_readl() we can remove io.h from the
clk-provider header and push out the io.h include to any code that isn't
already including the io.h header but using things like readl/writel,
etc.

Found with this grep:

git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \
xargs git grep -l \
-e '\<__iowrite32_copy\>' --or \
-e '\<__ioread32_copy\>' --or \
-e '\<__iowrite64_copy\>' --or \
-e '\<ioremap_page_range\>' --or \
-e '\<ioremap_huge_init\>' --or \
-e '\<arch_ioremap_pud_supported\>' --or \
-e '\<arch_ioremap_pmd_supported\>' --or \
-e '\<devm_ioport_map\>' --or \
-e '\<devm_ioport_unmap\>' --or \
-e '\<IOMEM_ERR_PTR\>' --or \
-e '\<devm_ioremap\>' --or \
-e '\<devm_ioremap_nocache\>' --or \
-e '\<devm_ioremap_wc\>' --or \
-e '\<devm_iounmap\>' --or \
-e '\<devm_ioremap_release\>' --or \
-e '\<devm_memremap\>' --or \
-e '\<devm_memunmap\>' --or \
-e '\<__devm_memremap_pages\>' --or \
-e '\<pci_remap_cfgspace\>' --or \
-e '\<arch_has_dev_port\>' --or \
-e '\<arch_phys_wc_add\>' --or \
-e '\<arch_phys_wc_del\>' --or \
-e '\<memremap\>' --or \
-e '\<memunmap\>' --or \
-e '\<arch_io_reserve_memtype_wc\>' --or \
-e '\<arch_io_free_memtype_wc\>' --or \
-e '\<__io_aw\>' --or \
-e '\<__io_pbw\>' --or \
-e '\<__io_paw\>' --or \
-e '\<__io_pbr\>' --or \
-e '\<__io_par\>' --or \
-e '\<__raw_readb\>' --or \
-e '\<__raw_readw\>' --or \
-e '\<__raw_readl\>' --or \
-e '\<__raw_readq\>' --or \
-e '\<__raw_writeb\>' --or \
-e '\<__raw_writew\>' --or \
-e '\<__raw_writel\>' --or \
-e '\<__raw_writeq\>' --or \
-e '\<readb\>' --or \
-e '\<readw\>' --or \
-e '\<readl\>' --or \
-e '\<readq\>' --or \
-e '\<writeb\>' --or \
-e '\<writew\>' --or \
-e '\<writel\>' --or \
-e '\<writeq\>' --or \
-e '\<readb_relaxed\>' --or \
-e '\<readw_relaxed\>' --or \
-e '\<readl_relaxed\>' --or \
-e '\<readq_relaxed\>' --or \
-e '\<writeb_relaxed\>' --or \
-e '\<writew_relaxed\>' --or \
-e '\<writel_relaxed\>' --or \
-e '\<writeq_relaxed\>' --or \
-e '\<readsb\>' --or \
-e '\<readsw\>' --or \
-e '\<readsl\>' --or \
-e '\<readsq\>' --or \
-e '\<writesb\>' --or \
-e '\<writesw\>' --or \
-e '\<writesl\>' --or \
-e '\<writesq\>' --or \
-e '\<inb\>' --or \
-e '\<inw\>' --or \
-e '\<inl\>' --or \
-e '\<outb\>' --or \
-e '\<outw\>' --or \
-e '\<outl\>' --or \
-e '\<inb_p\>' --or \
-e '\<inw_p\>' --or \
-e '\<inl_p\>' --or \
-e '\<outb_p\>' --or \
-e '\<outw_p\>' --or \
-e '\<outl_p\>' --or \
-e '\<insb\>' --or \
-e '\<insw\>' --or \
-e '\<insl\>' --or \
-e '\<outsb\>' --or \
-e '\<outsw\>' --or \
-e '\<outsl\>' --or \
-e '\<insb_p\>' --or \
-e '\<insw_p\>' --or \
-e '\<insl_p\>' --or \
-e '\<outsb_p\>' --or \
-e '\<outsw_p\>' --or \
-e '\<outsl_p\>' --or \
-e '\<ioread8\>' --or \
-e '\<ioread16\>' --or \
-e '\<ioread32\>' --or \
-e '\<ioread64\>' --or \
-e '\<iowrite8\>' --or \
-e '\<iowrite16\>' --or \
-e '\<iowrite32\>' --or \
-e '\<iowrite64\>' --or \
-e '\<ioread16be\>' --or \
-e '\<ioread32be\>' --or \
-e '\<ioread64be\>' --or \
-e '\<iowrite16be\>' --or \
-e '\<iowrite32be\>' --or \
-e '\<iowrite64be\>' --or \
-e '\<ioread8_rep\>' --or \
-e '\<ioread16_rep\>' --or \
-e '\<ioread32_rep\>' --or \
-e '\<ioread64_rep\>' --or \
-e '\<iowrite8_rep\>' --or \
-e '\<iowrite16_rep\>' --or \
-e '\<iowrite32_rep\>' --or \
-e '\<iowrite64_rep\>' --or \
-e '\<__io_virt\>' --or \
-e '\<pci_iounmap\>' --or \
-e '\<virt_to_phys\>' --or \
-e '\<phys_to_virt\>' --or \
-e '\<ioremap_uc\>' --or \
-e '\<ioremap\>' --or \
-e '\<__ioremap\>' --or \
-e '\<iounmap\>' --or \
-e '\<ioremap\>' --or \
-e '\<ioremap_nocache\>' --or \
-e '\<ioremap_uc\>' --or \
-e '\<ioremap_wc\>' --or \
-e '\<ioremap_wc\>' --or \
-e '\<ioremap_wt\>' --or \
-e '\<ioport_map\>' --or \
-e '\<ioport_unmap\>' --or \
-e '\<ioport_map\>' --or \
-e '\<ioport_unmap\>' --or \
-e '\<xlate_dev_kmem_ptr\>' --or \
-e '\<xlate_dev_mem_ptr\>' --or \
-e '\<unxlate_dev_mem_ptr\>' --or \
-e '\<virt_to_bus\>' --or \
-e '\<bus_to_virt\>' --or \
-e '\<memset_io\>' --or \
-e '\<memcpy_fromio\>' --or \
-e '\<memcpy_toio\>'

I also reordered a couple includes when they weren't alphabetical and
removed clk.h from kona, replacing it with clk-provider.h because
that driver doesn't use clk consumer APIs.

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: John Crispin <john@phrozen.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

MIPS: perf: ath79: Fix perfcount IRQ assignment

Currently it's not possible to use perf on ath79 due to genirq flags
mismatch happening on static virtual IRQ 13 which is used for
performance counters hardware IRQ 5.

On TP-Link Archer C7v5:

CPU0
2: 0 MIPS 2 ath9k
4: 318 MIPS 4 19000000.eth
7: 55034 MIPS 7 timer
8: 1236 MISC 3 ttyS0
12: 0 INTC 1 ehci_hcd:usb1
13: 0 gpio-ath79 2 keys
14: 0 gpio-ath79 5 keys
15: 31 AR724X PCI 1 ath10k_pci

$ perf top
genirq: Flags mismatch irq 13. 00014c83 (mips_perf_pmu) vs. 00002003 (keys)

On TP-Link Archer C7v4:

CPU0
4: 0 MIPS 4 19000000.eth
5: 7135 MIPS 5 1a000000.eth
7: 98379 MIPS 7 timer
8: 30 MISC 3 ttyS0
12: 90028 INTC 0 ath9k
13: 5520 INTC 1 ehci_hcd:usb1
14: 4623 INTC 2 ehci_hcd:usb2
15: 32844 AR724X PCI 1 ath10k_pci
16: 0 gpio-ath79 16 keys
23: 0 gpio-ath79 23 keys

$ perf top
genirq: Flags mismatch irq 13. 00014c80 (mips_perf_pmu) vs. 00000080 (ehci_hcd:usb1)

This problem is happening, because currently statically assigned virtual
IRQ 13 for performance counters is not claimed during the initialization
of MIPS PMU during the bootup, so the IRQ subsystem doesn't know, that
this interrupt isn't available for further use.

So this patch fixes the issue by simply booking hardware IRQ 5 for MIPS PMU.

Tested-by: Kevin 'ldir' Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Acked-by: John Crispin <john@phrozen.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>

MIPS: ath79: drop platform device registration code

With the target now being fully OF based, we can drop the legacy platform
device registration code. All devices and their drivers are now probed
via OF.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Felix Fietkau <nbd@nbd.name>

MIPS: ath79: drop machfiles

With the target now being fully OF based, we can drop the legacy mach
files. Boards can now boot fully of devicetree files.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Felix Fietkau <nbd@nbd.name>

MIPS: ath79: drop legacy IRQ code

With the target now being fully OF based, we can drop the legacy IRQ code.
All IRQs are now handled via the new irqchip drivers.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Felix Fietkau <nbd@nbd.name>

mm: remove include/linux/bootmem.h

Move remaining definitions and declarations from include/linux/bootmem.h
into include/linux/memblock.h and remove the redundant header.

The includes were replaced with the semantic patch below and then
semi-automated removal of duplicated '#include <linux/memblock.h>

@@
@@
- #include <linux/bootmem.h>
+ #include <linux/memblock.h>

[sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h]
Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au
[sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h]
Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au
[sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal]
Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au
Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Serge Semin <fancer.lancer@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MIPS: ath79: fix system restart

This patch disables irq on reboot to fix hang issues that were observed
due to pending interrupts.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19913/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org

MIPS: ath79: add support for QCA953x QCA956x TP9343

This patch adds support for 2 new types of QCA silicon. TP9343 is
essentially the same as the QCA956X but is licensed by TPLink.

Signed-off-by: Weijie Gao <hackpascal@gmail.com>
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19911/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org

MIPS: store the appended dtb address in a variable

Instead of rewriting the arguments to match the UHI spec, store the
address of a appended or UHI supplied dtb in fw_supplied_dtb.

That way the original bootloader arugments are kept intact while still
making the use of an appended dtb invisible for mach code.

Mach code can still find out if it is an appended dtb by comparing
fw_arg1 with fw_supplied_dtb.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: John Crispin <john@phrozen.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13699/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Add missing include file

Commit ddd0ce87bfde ("mips: Remove unnecessary of_platform_populate with
default match table") dropped the include of linux/clk-provider.h from
arch/mips/ath79/setup.c. This results in the following build error.

arch/mips/ath79/setup.c: In function 'ath79_of_plat_time_init':
arch/mips/ath79/setup.c:232:2: error:
implicit declaration of function 'of_clk_init'

Fixes: ddd0ce87bfde ("mips: Remove unnecessary of_platform_populate with default match table")
Cc: Rob Herring <robh@kernel.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rob Herring <robh@kernel.org>

mips: Remove unnecessary of_platform_populate with default match table

After patch "of/platform: Add common method to populate default bus",
it is possible for arch code to remove unnecessary callers of
of_platform_populate with default match table.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Joshua Henderson <joshua.henderson@microchip.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Rob Herring <robh@kernel.org>

MIPS: ath79: Disable platform code for OF boards.

For OF boards we have to skip platform initialization code
so we can prove that OF code do all necessary initialization.

[ralf@linux-mips.org: Fix merge conflict.]

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12877/
Patchwork: https://patchwork.linux-mips.org/patch/12920/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: update devicetree clock support for AR9132

Current ath79 clock.c code does not read reference clock and
pll setup from devicetree. E.g. you can set any clock rate value
in board DTS but it will have no effect on the real clk calculation.

This patch fixes some AR9132 devicetree clock support defects:

* clk initialization function ath79_clocks_init_dt_ng()
is introduced; it actually gets pll block base register
address and reference clock from devicetree;
* pll register parsing code is moved to the separate
ar724x_clk_init() function; this function
can be called from platform code or from devicetree code.

Also mips_hpt_frequency value is set from dt, so the appropriate
clock parameter is added to the cpu@0 devicetree node.

The same approach can be used for adding AR9331 devicetree support.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12876/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Use the reset controller to restart OF machines

Don't set _machine_restart() on OF machines as the reset driver
now provides a system restart handler.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12235/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Remove the builtin DTB support

Now that appended DTB is usable we can drop the builtin DTB support.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12231/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Add support for DTB passed using the UHI boot protocol

This is needed for bootloader supporting UHI and to support appended
DTB.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12230/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Remove some unused code from setup.c

Remove the unused defines for the reference clocks rate
and the useless machine init function.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11505/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Add a machine entry for booting OF machines

As I'm using a board with a broken old bootloader I hardcoded the
mips_machtype and did't notice that the machine entry was still
missing.

[ralf@linux-mips.org: Fixed spelling message noticed by Sergei Shtylyov
<sergei.shtylyov@cogentembedded.com>.]

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11503/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Fix the DDR control initialization on ar71xx and ar934x

The DDR control initialization needs to know the SoC type, however
ath79_detect_sys_type() was called after ath79_ddr_ctrl_init().
Reverse the order to fix the DDR control initialization on ar71xx and
ar934x.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
CC: stable@vger.kernel.org # v4.2+
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11500/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: Export get_c0_perfcount_int()

get_c0_perfcount_int is tested from oprofile code. If oprofile is
compiled as module, get_c0_perfcount_int needs to be exported, otherwise
it cannot be resolved.

Fixes: a669efc4a3b4 ("MIPS: Add hook to get C0 performance counter interrupt")
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: abrestic@chromium.org
Patchwork: https://patchwork.linux-mips.org/patch/10763/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Add basic device tree support

Add the bare minimum to load a device tree.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Improve the DDR controller interface

The DDR controller need to be used by the IRQ controller to flush
the write buffer of some devices before running the IRQ handler.
It is also used by the PCI controller to setup the PCI memory windows.

The current interface used to access the DDR controller doesn't
provides any useful abstraction and simply rely on a shared global
pointer.

Replace this by a simple API to setup the PCI memory windows and use
the write buffer flush independently of the SoC type. That remove the
need for the shared global pointer, simplify the IRQ handler code.

[ralf@linux-mips.org: Folded in Alban Bedel's follup fix.]

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9773/
Patchwork: http://patchwork.linux-mips.org/patch/10543/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Add a missing new line in log message

The memory setup log is missing a new line.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9771/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: Add hook to get C0 performance counter interrupt

The hardware perf event driver and oprofile interpret the global
cp0_perfcount_irq differently: in the hardware perf event driver
it is an offset from MIPS_CPU_IRQ_BASE and in oprofile it is the
actual IRQ number. This still works most of the time since
MIPS_CPU_IRQ_BASE is usually 0, but is clearly wrong. Since the
performance counter interrupt may vary from platform to platform
like the C0 timer interrupt, add the optional get_c0_perfcount_int
hook which returns the IRQ number of the performance counter.
The hook should return < 0 if the performance counter interrupt is
shared with the timer. If the hook is not present, the CPU vector
reported in C0_IntCtl (cp0_perfcount_irq) is used.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Qais Yousef <qais.yousef@imgtec.com>
Tested-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Jeffrey Deans <jeffrey.deans@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7805/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Switch to the clkdev framework

The ath79 code uses static clock devices and
provides its own clk_{get,put} implementations.

Change the code to use dynamically allocated
clock devices and register the clocks within
the clkdev framework.

Additionally, remove the local clk_{get,put}
implementation. The clkdev framework has a
common implementation of those.

Also move the call of ath79_clock_init() from
plat_mem_init() to plat_time_init(). Otherwise
it would not be possible to use memory allocation
functions from ath79clock_init() becasuse the
memory subsystem is not yet initialized when
plat_mem_init() runs.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5780/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Use ath79_get_sys_clk_rate to get basic clock rates

Instead of accessing the rate field of the static
clock devices directly, use the recently introduced
helper function to get the rate of the basic clocks.

The static ath79_{ahb,cpu,ddr,ref}_clk variables
will be removed by a subsequent patch. The actual
change is in preparation of that.

Also move the clock frequency printing code into
the plat_time_init function. We are getting the
cpu clock rate there already so we can save an
extra call of the helper.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5782/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Use a helper function to get system clock rates

The ath79 platform uses similar code to get the
rate of various clocks during init. Separate the
similar code into a new helper function and use
that to avoid code duplication.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5778/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code

commit 3747069b25e419f6b51395f48127e9812abc3596 upstream.

The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.

After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.

Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
and are flagged as __cpuinit -- so if we remove the __cpuinit from
the arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
related content into no-ops as early as possible, since that will get
rid of these warnings. In any case, they are temporary and harmless.

Here, we remove all the MIPS __cpuinit from C code and __CPUINIT
from asm files. MIPS is interesting in this respect, because there
are also uasm users hiding behind their own renamed versions of the
__cpuinit macros.

[1] https://lkml.org/lkml/2013/5/20/589

[ralf@linux-mips.org: Folded in Paul's followup fix.]

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5494/
Patchwork: https://patchwork.linux-mips.org/patch/5495/
Patchwork: https://patchwork.linux-mips.org/patch/5509/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: Idle: Consolidate all declarations in <asm/idle.h>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: make use of the new memory detection code

There is now a generic function for detecting memory size. Use this instead of
the one found in the ath79 support.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5149/

MIPS: ath79: add SoC detection code for the QCA955X SoCs

Also add 'soc_is_qca955[68x]' helper functions
and a Kconfig symbol for the SoC family.

Cc: Rodriguez, Luis <rodrigue@qca.qualcomm.com>
Cc: Giori, Kathy <kgiori@qca.qualcomm.com>
Cc: QCA Linux Team <qca-linux-team@qca.qualcomm.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4943/
Signed-off-by: John Crispin <blogic@openwrt.org>

MIPS: ath79: add SoC detection code for AR934X

Also add 'soc_is_ar934[124x]' helper functions and a Kconfig
symbol for the AR934X SoCs.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: sort case statements in ath79_detect_sys_type

Sort the case statements alphabetically in order to improve
readability.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Cc: linux-mips@linux-mips.org
Cc: mcgrof@infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/3505/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Store the SoC revision in a global variable

Knowing the exact revision of the SoC is required to make runtime decisions
in various code paths. We have determined the SoC revision already, so we
only need to store that in a global variable.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3027/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: add revision id for the AR933X SoCs

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Kathy Giori <kgiori@qca.qualcomm.com>
Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com>
Patchwork: https://patchwork.linux-mips.org/patch/2538/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: Remove superfluous parentheses

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Kathy Giori <kgiori@qca.qualcomm.com>
Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com>
Patchwork: https://patchwork.linux-mips.org/patch/2519/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: Fix up inconsistency in panic() string argument.

Panic() invokes printk() to add a \n internally, so panic arguments should
not themselves end in \n. Panic invocations in arch/mips and elsewhere
are inconsistently sometimes terminating in \n, sometimes not.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: add common watchdog device

All supported SoCs have a built-in hardware watchdog driver. This patch
registers a platform_device for that to make it usable.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1955/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: utilize the MIPS multi-machine support

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1949/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: ath79: add GPIOLIB support

This patch implements generic GPIO routines for the built-in
GPIO controllers of the Atheros AR71XX/AR724X/AR913X SoCs.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1948/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

MIPS: Add initial support for the Atheros AR71XX/AR724X/AR931X SoCs

This patch adds initial support for various Atheros SoCs based on the
MIPS 24Kc core. The following models are supported at the moment:

- AR7130
- AR7141
- AR7161
- AR9130
- AR9132
- AR7240
- AR7241
- AR7242

The current patch contains minimal support only, but the resulting
kernel can boot into user-space with using of an initramfs image on
various boards which are using these SoCs. Support for more built-in
devices and individual boards will be implemented in further patches.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1947/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>