LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Hanjun Guo <hanjun.guo@linaro.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Will Deacon <will.deacon@arm.com>,
	Olof Johansson <olof@lixom.net>,
	Grant Likely <grant.likely@linaro.org>
Cc: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Mark Rutland <mark.rutland@arm.com>,
	Graeme Gregory <graeme.gregory@linaro.org>,
	Sudeep Holla <Sudeep.Holla@arm.com>, Jon Masters <jcm@redhat.com>,
	Marc Zyngier <marc.zyngier@arm.com>,
	Mark Brown <broonie@kernel.org>, Robert Richter <rric@kernel.org>,
	Timur Tabi <timur@codeaurora.org>,
	Ashwin Chaugule <ashwinc@codeaurora.org>,
	suravee.suthikulpanit@amd.com, linux-acpi@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org,
	Tomasz Nowicki <tomasz.nowicki@linaro.org>,
	Hanjun Guo <hanjun.guo@linaro.org>
Subject: [update][PATCH v10 06/21] ACPI / sleep: Introduce CONFIG_ACPI_GENERIC_SLEEP
Date: Fri, 13 Mar 2015 16:14:29 +0800	[thread overview]
Message-ID: <1426234469-6434-1-git-send-email-hanjun.guo@linaro.org> (raw)

From: Graeme Gregory <graeme.gregory@linaro.org>

ACPI 5.1 does not currently support S states for ARM64 hardware but
ACPI code will call acpi_target_system_state() and acpi_sleep_init()
for device power management, so introduce CONFIG_ACPI_GENERIC_SLEEP
and select it for x86 and ia64 only to make sleep functions available,
and also introduce stub function to allow other drivers to function
until S states are defined for ARM64.

It will be no functional change for x86 and IA64.

CC: Rafael J. Wysocki <rjw@rjwysocki.net>
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Robert Richter <rrichter@cavium.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
---
 arch/ia64/Kconfig       | 1 +
 arch/x86/Kconfig        | 1 +
 drivers/acpi/Kconfig    | 4 ++++
 drivers/acpi/Makefile   | 2 +-
 drivers/acpi/internal.h | 4 ++++
 5 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 074e52b..e8728d7 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -10,6 +10,7 @@ config IA64
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select PCI if (!IA64_HP_SIM)
 	select ACPI if (!IA64_HP_SIM)
+	select ACPI_GENERIC_SLEEP if ACPI
 	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
 	select HAVE_UNSTABLE_SCHED_CLOCK
 	select HAVE_IDE
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index b7d31ca..9804431 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -22,6 +22,7 @@ config X86_64
 ### Arch settings
 config X86
 	def_bool y
+	select ACPI_GENERIC_SLEEP if ACPI
 	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
 	select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 	select ARCH_HAS_FAST_MULTIPLIER
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index e6c3ddd..a7b9120 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -48,9 +48,13 @@ config ACPI_LEGACY_TABLES_LOOKUP
 config ARCH_MIGHT_HAVE_ACPI_PDC
 	bool
 
+config ACPI_GENERIC_SLEEP
+	bool
+
 config ACPI_SLEEP
 	bool
 	depends on SUSPEND || HIBERNATION
+	depends on ACPI_GENERIC_SLEEP
 	default y
 
 config ACPI_PROCFS_POWER
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 623b117..2397822 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -23,7 +23,7 @@ acpi-y				+= nvs.o
 
 # Power management related files
 acpi-y				+= wakeup.o
-acpi-y				+= sleep.o
+acpi-$(CONFIG_ACPI_GENERIC_SLEEP) += sleep.o
 acpi-y				+= device_pm.o
 acpi-$(CONFIG_ACPI_SLEEP)	+= proc.o
 
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 56b321a..6f08c85 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -161,7 +161,11 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit);
 /*--------------------------------------------------------------------------
                                   Suspend/Resume
   -------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_GENERIC_SLEEP
 extern int acpi_sleep_init(void);
+#else
+static inline int acpi_sleep_init(void) { return -ENXIO; }
+#endif
 
 #ifdef CONFIG_ACPI_SLEEP
 int acpi_sleep_proc_init(void);
-- 
1.9.1


             reply	other threads:[~2015-03-13  8:14 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-13  8:14 Hanjun Guo [this message]
2015-03-13 21:49 ` Rafael J. Wysocki
2015-03-16 12:14   ` Hanjun Guo
2015-03-16 23:15     ` Rafael J. Wysocki
2015-03-17  1:08       ` Hanjun Guo
2015-03-17  2:28         ` Rafael J. Wysocki
2015-03-17  2:36           ` Hanjun Guo
2015-03-17  3:23             ` Rafael J. Wysocki
2015-03-17  4:10               ` Hanjun Guo
2015-03-17  5:59                 ` Jon Masters
2015-03-17  6:31                   ` Hanjun Guo
2015-03-17 14:33                 ` Rafael J. Wysocki
2015-03-18  1:56                   ` Hanjun Guo
2015-03-17 12:35               ` Lorenzo Pieralisi
     [not found]                 ` <CAGHbJ3DhUB688K7ooT7ai=2QjRp7S+_E_Y+a+GupeTvjR5omMg@mail.gmail.com>
2015-03-17 14:29                   ` [PATCH] ACPI / sleep: Drop acpi_suspend() which is not used Rafael J. Wysocki
2015-03-17 14:24                     ` Lorenzo Pieralisi
2015-03-18  1:17                     ` Hanjun Guo
2015-03-17 14:30                 ` [update][PATCH v10 06/21] ACPI / sleep: Introduce CONFIG_ACPI_GENERIC_SLEEP Rafael J. Wysocki

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1426234469-6434-1-git-send-email-hanjun.guo@linaro.org \
    --to=hanjun.guo@linaro.org \
    --cc=Lorenzo.Pieralisi@arm.com \
    --cc=Sudeep.Holla@arm.com \
    --cc=arnd@arndb.de \
    --cc=ashwinc@codeaurora.org \
    --cc=broonie@kernel.org \
    --cc=catalin.marinas@arm.com \
    --cc=graeme.gregory@linaro.org \
    --cc=grant.likely@linaro.org \
    --cc=jcm@redhat.com \
    --cc=linaro-acpi@lists.linaro.org \
    --cc=linux-acpi@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=marc.zyngier@arm.com \
    --cc=mark.rutland@arm.com \
    --cc=olof@lixom.net \
    --cc=rjw@rjwysocki.net \
    --cc=rric@kernel.org \
    --cc=suravee.suthikulpanit@amd.com \
    --cc=timur@codeaurora.org \
    --cc=tomasz.nowicki@linaro.org \
    --cc=will.deacon@arm.com \
    --subject='Re: [update][PATCH v10 06/21] ACPI / sleep: Introduce CONFIG_ACPI_GENERIC_SLEEP' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).