Patches adding support for hibernation on ARM
- ARM hibernation / suspend-to-disk
- Change soft_restart to use non-tracing raw_local_irq_disable
Patches based on v3.13 tag, verified hibernation on beaglebone black on a
branch based on 3.13 merged with initial omap support from Russ Dill which
can be found here (includes v1 patchset):
http://git.linaro.org/git-ro/people/sebastian.capella/linux.git hibernation_3.13_russMerge
[PATCH v5 1/2] ARM: avoid tracers in soft_restart
arch/arm/kernel/process.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Use raw_local_irq_disable in place of local_irq_disable to avoid
infinite abort recursion while tracing. (unchanged since v3)
[PATCH v5 2/2] ARM hibernation / suspend-to-disk
arch/arm/include/asm/memory.h | 1 +
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/hibernate.c | 113 +++++++++++++++++++++++++++++++++++++++++
arch/arm/mm/Kconfig | 5 ++
include/linux/suspend.h | 2 +
5 files changed, 122 insertions(+)
Adds support for ARM based hibernation
Additional notes:
-----------------
There are two checkpatch warnings added by this patch. These follow
behavior in existing hibernation implementations on other platforms.
WARNING: externs should be avoided in .c files
#116: FILE: arch/arm/kernel/hibernate.c:26:
+extern const void __nosave_begin, __nosave_end;
This extern is picking up the linker nosave region definitions, only
used in hibernate. Follows same extern line used mips, powerpc, s390,
sh, sparc, x86 & unicore32
WARNING: externs should be avoided in .c files
#191: FILE: arch/arm/kernel/hibernate.c:101:
+extern void call_with_stack(void (*fn)(void *), void *arg, void *sp);
This extern is used in the arch/arm/ in hibernate, process and bL_switcher
Changes in v5:
--------------
* Checkpatch warning on trailing whitespace
Changes in v4:
--------------
* updated comment for soft_restart with review feedback
* dropped freeze_processes patch which was queued separately
to 3.14 by Rafael Wysocki:
https://lkml.org/lkml/2014/2/25/683
Changes in v3:
--------------
* added comment to use of soft_restart
* drop irq disable soft_restart patch
* add patch to avoid tracers in soft_restart by using raw_local_irq_*
Changes in v2:
--------------
* Removed unneeded flush_thread, use of __naked and cpu_init.
* dropped Cyril Chemparathy <cyril(a)ti.com> from Cc: list as
emails are bouncing.
Thanks,
Sebastian Capella
Patches adding support for hibernation on ARM
- ARM hibernation / suspend-to-disk
- Change soft_restart to use non-tracing raw_local_irq_disable
Patches based on v3.13 tag, verified hibernation on beaglebone black on a
branch based on 3.13 merged with initial omap support from Russ Dill which
can be found here (includes v1 patchset):
http://git.linaro.org/git-ro/people/sebastian.capella/linux.git hibernation_3.13_russMerge
[PATCH v4 1/2] ARM: avoid tracers in soft_restart
arch/arm/kernel/process.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Use raw_local_irq_disable in place of local_irq_disable to avoid
infinite abort recursion while tracing. (unchanged since v3)
[PATCH v4 2/2] ARM hibernation / suspend-to-disk
arch/arm/include/asm/memory.h | 1 +
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/hibernate.c | 113 +++++++++++++++++++++++++++++++++++++++++
arch/arm/mm/Kconfig | 5 ++
include/linux/suspend.h | 2 +
5 files changed, 122 insertions(+)
Adds support for ARM based hibernation
Additional notes:
-----------------
There are two checkpatch warnings added by this patch. These follow
behavior in existing hibernation implementations on other platforms.
WARNING: externs should be avoided in .c files
#116: FILE: arch/arm/kernel/hibernate.c:26:
+extern const void __nosave_begin, __nosave_end;
This extern is picking up the linker nosave region definitions, only
used in hibernate. Follows same extern line used mips, powerpc, s390,
sh, sparc, x86 & unicore32
WARNING: externs should be avoided in .c files
#191: FILE: arch/arm/kernel/hibernate.c:101:
+extern void call_with_stack(void (*fn)(void *), void *arg, void *sp);
This extern is used in the arch/arm/ in hibernate, process and bL_switcher
Changes in v4:
--------------
* updated comment for soft_restart with review feedback
* dropped freeze_processes patch which was queued separately
to 3.14 by Rafael Wysocki:
https://lkml.org/lkml/2014/2/25/683
Changes in v3:
--------------
* added comment to use of soft_restart
* drop irq disable soft_restart patch
* add patch to avoid tracers in soft_restart by using raw_local_irq_*
Changes in v2:
--------------
* Removed unneeded flush_thread, use of __naked and cpu_init.
* dropped Cyril Chemparathy <cyril(a)ti.com> from Cc: list as
emails are bouncing.
Thanks,
Sebastian Capella
Patches adding support for hibernation on ARM
- ARM hibernation / suspend-to-disk
- Fix hang in freeze_processes during hibernation
- add an irq disabled version of soft_restart
Patches based on v3.13 tag, verified hibernation on beaglebone black on a branch
based on 3.13 merged with initial omap support from Russ Dill which be found here:
http://git.linaro.org/git-ro/people/sebastian.capella/linux.git hibernation_3.13_russMerge
[PATCH RFC v1 1/3] ARM: Add irq disabled version of soft_restart.
arch/arm/include/asm/system_misc.h | 1 +
arch/arm/kernel/process.c | 15 ++++++++++-----
2 files changed, 11 insertions(+), 5 deletions(-)
Adds the ability to run soft restart with local_irq/fiq_disable
Useful in hibernation code paths
[PATCH RFC v1 2/3] Fix hibernation restore hang in freeze_processes
drivers/base/firmware_class.c | 1 +
1 file changed, 1 insertion(+)
Add handling for PM_RESTORE_PREPARE notifier
[PATCH RFC v1 3/3] ARM hibernation / suspend-to-disk
arch/arm/include/asm/memory.h | 1 +
arch/arm/kernel/Makefile | 1 +
arch/arm/kernel/hibernate.c | 106 +++++++++++++++++++++++++++++++++++++++++
arch/arm/mm/Kconfig | 5 ++
include/linux/suspend.h | 2 +
5 files changed, 115 insertions(+)
Adds support for ARM based hibernation
Additional notes:
There are two checkpatch warnings added by this patch. These follow
behavior in existing hibernation implementations on other platforms.
WARNING: externs should be avoided in .c files
#116: FILE: arch/arm/kernel/hibernate.c:26:
+extern const void __nosave_begin, __nosave_end;
This extern is picking up the linker nosave region definitions, only
used in hibernate. Follows same extern line used mips, powerpc, s390,
sh, sparc, x86 & unicore32
WARNING: externs should be avoided in .c files
#191: FILE: arch/arm/kernel/hibernate.c:101:
+extern void call_with_stack(void (*fn)(void *), void *arg, void *sp);
This extern is used in the arch/arm/ in hibernate, process and bL_switcher
From: Mark Brown <broonie(a)linaro.org>
The driver reads from the DC offset control registers during callibration
but since the registers are marked as volatile and there is a register
cache the values will not be read from the hardware after the first reading
rendering the callibration ineffective.
It appears that the driver was originally written for the ASoC level
register I/O code but converted to regmap prior to merge and this issue
was missed during the conversion as the framework level volatile register
functionality was not being used.
Signed-off-by: Mark Brown <broonie(a)linaro.org>
Cc: stable(a)vger.kernel.org
---
sound/soc/codecs/da732x.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/sound/soc/codecs/da732x.c b/sound/soc/codecs/da732x.c
index 8e2c74d..798eb43 100644
--- a/sound/soc/codecs/da732x.c
+++ b/sound/soc/codecs/da732x.c
@@ -1268,11 +1268,23 @@ static struct snd_soc_dai_driver da732x_dai[] = {
},
};
+static bool da732x_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case DA732X_REG_HPL_DAC_OFF_CNTL:
+ case DA732X_REG_HPR_DAC_OFF_CNTL:
+ return true;
+ default:
+ return false;
+ }
+}
+
static const struct regmap_config da732x_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = DA732X_MAX_REG,
+ .volatile_reg = da732x_volatile,
.reg_defaults = da732x_reg_cache,
.num_reg_defaults = ARRAY_SIZE(da732x_reg_cache),
.cache_type = REGCACHE_RBTREE,
--
1.9.0.rc3
Use the scheduler documented default for unknown CPUs rather than
assigning them to a cluster.
Mark Brown (4):
arm64: topology: Implement basic CPU topology support
arm64: topology: Add support for topology DT bindings
arm64: topology: Tell the scheduler about the relative power of cores
arm64: topology: Provide relative power numbers for cores
arch/arm64/Kconfig | 24 +++
arch/arm64/include/asm/topology.h | 39 ++++
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/smp.c | 11 ++
arch/arm64/kernel/topology.c | 380 ++++++++++++++++++++++++++++++++++++++
5 files changed, 455 insertions(+)
