Commit Graph

7 Commits

Author SHA1 Message Date
Thomas Gleixner 75a6faf617 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms and conditions 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 101 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190113.822954939@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:15 +02:00
Wei Yongjun f147140c7f ARM: hisi: fix error return code in hip04_smp_init()
Fix to return error code -ENODEV from the of_find_compatible_node()
error handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-03-28 15:30:54 +01:00
Florian Fainelli 64fc2a947a ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol
All low-level PM/SMP code using virt_to_phys() should actually use
__pa_symbol() against kernel symbols. Update code where relevant to move
away from virt_to_phys().

Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2017-02-28 11:06:10 +00:00
Masahiro Yamada 75305275a7 ARM: use const and __initconst for smp_operations
These smp_operations structures are not over-written, so add "const"
qualifier and replace __initdata with __initconst.

Also, add "static" where it is possible.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org> # qcom part
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Wei Xu <xuwei5@hisilicon.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-12-01 22:17:45 +01:00
Arnd Bergmann 4c9e0f76a5 ARM: 8370/1: hisi: fix hip04 build without HOTPLUG_CPU
The hip04 smp implementation provides the hotplug operations (cpu_die
and cpu_kill) unconditionally at the moment, which leads to a build
error when HOTPLUG_CPU is disabled:

mach-hisi/platmcpm.c:242:13: note: (near initialization for 'hip04_smp_ops')
mach-hisi/platmcpm.c:242:2: error: unknown field 'cpu_die' specified in initializer
mach-hisi/platmcpm.c:243:2: error: unknown field 'cpu_kill' specified in initializer

This uses an #ifdef to remove the code from the build when that
option is not set.

Fixes: 905cdf9dda ("ARM: hisi/hip04: remove the MCPM overhead")

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolas Pitre <nico@xxxxxxxxxx>
Acked-by: Wei Xu <xuwei5@hisilicon.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-05-28 00:22:49 +01:00
Nicolas Pitre 905cdf9dda ARM: hisi/hip04: remove the MCPM overhead
This platform is currently relying on the MCPM infrastructure for no
apparent reason.  The MCPM concurrency handling brings no benefits here
as there is no asynchronous CPU wake-ups to be concerned about (this is
used for CPU hotplug and secondary boot only, not for CPU idle).

This platform is also different from the other MCPM users because a given
CPU can't shut itself down completely without the assistance of another
CPU. This is at odds with the on-going MCPM backend refactoring.

To simplify things, this is converted to hook directly into the
smp_operations callbacks, bypassing the MCPM infrastructure.

Tested-by: Wei Xu <xuwei5@hisilicon.com>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
2015-05-06 11:42:01 -04:00
Haojian Zhuang 9cdc99919a ARM: hisi: enable MCPM implementation
Multiple CPU clusters are used in Hisilicon HiP04 SoC. Now use MCPM
framework to manage power on HiP04 SoC.

Changelog:
v20:
  * Disable L2 prefetch when the whole cluster is down.
  * Move disabling snoop filter into power_down() after L2 prefetch
    disabled.
  * Remove delay in wait_for_power_down() after L2 prefetch disabled.
  * Add the sleep polling in wait_for_power_down() again since we
    need to wait L2 when the cluster is down.
v19:
  * Add comments on those delay hacks.
  * Update on checking core enabled counts in wait_for_power_down().
v18:
  * Fix to release resource in probe().
  * Check whether cpu is already up in the process of making cpu down.
  * Add udelay in power up/down sequence.
  * Optimize on setting relocation entry.
  * Optimize on polling status in wait_for_power_down().
  * Add mcpm critical operations.
v17:
  * Parse bootwrapper parameters in DTS file.
  * Fix to use msleep() in spinlock region.
v16:
  * Parse bootwrapper parameters in command line instead.
v13:
  * Restore power down operation in MCPM.
  * Fix disabling snoop filter issue in MCPM.
v12:
  * Use wfi as power down state in MCPM.
  * Remove wait_for_powerdown() in MCPM because wfi is used now.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2014-09-03 14:10:12 +01:00