| Commit message (Collapse) | Author | Age |
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This patch adds debugfs support to OPP layer to export OPPs and their
properties for all the devices.
This creates a top level directory: /sys/kernel/debug/opp and then
device specific directories (based on device names) inside it. For
example: 'cpu0', 'cpu1', etc..
If multiple devices share the OPP table, then the real directory is
created only for the first device. For all others, links are created to
the real directory.
Inside the device specific directory, a separate directory is created
for each OPP. And within that files per opp property.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit deaa51465105a7eda19a627b10372f4f7c51a4df)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
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Allocated memory is not getting freed in remove request.
This change is to free the memory allocated to avoid memory
leaks.
Change-Id: I1225d492b7f58f8bda2621ec0bb2bd201d8dee6c
Signed-off-by: Srinivas Rao L <lsrao@codeaurora.org>
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QoS add requests uses a handle to the priority list that is used
internally to save the request, but this does not extend well. Also,
dev_pm_qos structure definition seems to use a list object directly.
The 'derivative' relationship seems to be broken.
Use pm_qos_request objects instead of passing around the protected
priority list object.
Change-Id: Ie4c9c22dd4ea13265fe01f080ba68cf77d9d484d
Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
[mattw@codeaurora.org: resolve context conflicts and extend
struct modifications to additional affected users]
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
Conflicts:
include/linux/pm_qos.h
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Check if the len is not greater than maximum to prevent buffer overflow.
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Change-Id: I575b0a72bb5448b68353408d71fa8b83420c9088
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There is a possibility that a wakeup source event is received after
the device prepares to suspend which might cause the suspend to abort.
This patch adds the functionality of reporting the last active wakeup
source which is currently not active but caused the suspend to abort reason
via the /sys/kernel/power/last_wakeup_reason file.
Change-Id: I1760d462f497b33e425f5565cb6cff5973932ec3
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
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Extends the last_resume_reason to log suspend abort reason. The abort
reasons will have "Abort:" appended at the start to distinguish itself
from the resume reason.
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Change-Id: I3207f1844e3d87c706dfc298fb10e1c648814c5f
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Rather than hard-lock the kernel, dump the suspend thread stack and
BUG() when a driver takes too long to suspend. The timeout is set
to 12 seconds to be longer than the usbhid 10 second timeout.
Exclude from the watchdog the time spent waiting for children that
are resumed asynchronously and time every device, whether or not they
resumed synchronously.
Change-Id: Ifd211c06b104860c2fee6eecfe0d61774aa4508a
Original-author: San Mehat <san@google.com>
Signed-off-by: Benoit Goby <benoit@android.com>
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* powercap:
powercap / RAPL: fix BIOS lock check
* pm-cpufreq:
cpufreq: intel_pstate: Minor cleanup for FRAC_BITS
cpufreq: tegra: add regulator dependency for T124
* pm-domains:
PM / Domains: Allow runtime PM callbacks to be re-used during system PM
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A runtime PM centric subsystem/driver may typically use the runtime PM
helpers, pm_runtime_force_suspend|resume() in the system PM path. This
means the genpd's runtime PM callbacks might be invoked even when runtime
PM has been disabled for the device.
To properly cope with these and similar scenarios when these helper
functions are used, change genpd to skip validating and measuring the
device PM QOS latency.
This is needed because otherwise genpd may prevent the device to be put
into low power state. If this occurs during system PM, it causes the
sequence to be aborted as a device's system PM callback returns -EBUSY.
Fixes: ba2bbfbf6307 (PM / Domains: Remove intermediate states from the power off sequence)
Reported-by: Cao Minh Hiep <cm-hiep@jinso.co.jp>
Reported-by: Harunaga <nx-truong@jinso.co.jp>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: 4.3+ <stable@vger.kernel.org> # 4.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* pm-domains:
PM / Domains: Fix bad of_node_put() in failure paths of genpd_dev_pm_attach()
PM / Domains: Validate cases of a non-bound driver in genpd governor
* pm-cpufreq:
cpufreq: use last policy after online for drivers with ->setpolicy
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It looks like these meant to be unreffing the
of_parse_phandle_with_args() node, since the error paths above it
don't do of_node_put. That function returns a new ref in pd_args.np,
though, not a new ref on dev->of_node. Also, it would have leaked the
ref in the success case.
Fixes "ERROR: Bad of_node_put()" on bcm2835 in the -EPROBE_DEFER case.
Fixes: aa42240ab254 (PM / Domains: Add generic OF-based PM domain look-up)
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Cc: 3.18+ <stable@vger.kernel.org> # 3.18+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Recently genpd removed the requirement of a having a driver bound for its
attached devices to allow genpd to power off. That change should also have
removed a corresponding validation in the governor, let's correct that.
Fixes: 298cd0f08801 (PM / Domains: Remove dev->driver check for runtime)
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* pm-sleep:
PM / wakeirq: check that wake IRQ is valid before accepting it
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Check that IRQ number passed to dev_pm_set_wake_irq() and
dev_pm_set_dedicated_wake_irq() is valid (not negative) before
accepting it.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management and ACPI updates from Rafael Wysocki:
"The only new feature in this batch is support for the ACPI _CCA device
configuration object, which it a pre-requisite for future ACPI PCI
support on ARM64, but should not affect the other architectures.
The rest is fixes and cleanups, mostly in cpufreq (including
intel_pstate), the Operating Performace Points (OPP) framework and
tools (cpupower and turbostat).
Specifics:
- Support for the ACPI _CCA configuration object intended to tell the
OS whether or not a bus master device supports hardware managed
cache coherency and a new set of functions to allow drivers to
check the cache coherency support for devices in a platform
firmware interface agnostic way (Suravee Suthikulpanit, Jeremy
Linton).
- ACPI backlight quirks for ESPRIMO Mobile M9410 and Dell XPS L421X
(Aaron Lu, Hans de Goede).
- Fixes for the arm_big_little and s5pv210-cpufreq cpufreq drivers
(Jon Medhurst, Nicolas Pitre).
- kfree()-related fixup for the recently introduced CPPC cpufreq
frontend (Markus Elfring).
- intel_pstate fix reducing kernel log noise on systems where
P-states are managed by hardware (Prarit Bhargava).
- intel_pstate maintainers information update (Srinivas Pandruvada).
- cpufreq core optimization related to the handling of delayed work
items used by governors (Viresh Kumar).
- Locking fixes and cleanups of the Operating Performance Points
(OPP) framework (Viresh Kumar).
- Generic power domains framework cleanups (Lina Iyer).
- cpupower tool updates (Jacob Tanenbaum, Sriram Raghunathan, Thomas
Renninger).
- turbostat tool updates (Len Brown)"
* tag 'pm+acpi-4.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
PCI: ACPI: Add support for PCI device DMA coherency
PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()
of/pci: Fix pci_get_host_bridge_device leak
device property: ACPI: Remove unused DMA APIs
device property: ACPI: Make use of the new DMA Attribute APIs
device property: Adding DMA Attribute APIs for Generic Devices
ACPI: Adding DMA Attribute APIs for ACPI Device
device property: Introducing enum dev_dma_attr
ACPI: Honor ACPI _CCA attribute setting
cpufreq: CPPC: Delete an unnecessary check before the function call kfree()
PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp()
PM / OPP: Hold dev_opp_list_lock for writers
PM / OPP: Protect updates to list_dev with mutex
PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus()
cpufreq: s5pv210-cpufreq: fix wrong do_div() usage
MAINTAINERS: update for intel P-state driver
Creating a common structure initialization pattern for struct option
cpupower: Enable disabled Cstates if they are below max latency
cpupower: Remove debug message when using cpupower idle-set -D switch
cpupower: cpupower monitor reports uninitialized values for offline cpus
...
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* pm-domains:
PM / Domains: Allocate memory outside domain locks
PM / Domains: Remove dev->driver check for runtime PM
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In preparation for supporting IRQ-safe domains, allocate domain data
outside the domain locks. These functions are not called in an atomic
context, so we can always allocate memory using GFP_KERNEL. By
allocating memory before the locks, we can safely lock the domain using
spinlocks instead of mutexes.
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Remove check for driver of a device, for runtime PM. Device may be
suspended without an explicit driver. This check seems to be vestigial
and incorrect in the current context.
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* pm-opp:
PM / OPP: Add opp_rcu_lockdep_assert() to _find_device_opp()
PM / OPP: Hold dev_opp_list_lock for writers
PM / OPP: Protect updates to list_dev with mutex
PM / OPP: Propagate error properly from dev_pm_opp_set_sharing_cpus()
PM / OPP: Parse all power-supply related bindings together
PM / OPP: Rename routines specific to old bindings with _v1
PM / OPP: Improve print messages with pr_fmt
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_find_device_opp() should be called with rcu-read lock or
dev_opp_list_lock held. Add the opp_rcu_lockdep_assert() check to make
sure caller have taken appropriate locks.
Fix comment over the routine as well.
Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Writers need to update OPP device and their list with dev_opp_list_lock
mutex held, which was missed at few places. Fix it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.3 <stable@vger.kernel.org> # 4.3
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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dev_opp_list_lock is used everywhere to protect device and OPP lists,
but dev_pm_opp_set_sharing_cpus() is missed somehow. And instead we used
rcu-lock, which wouldn't help here as we are adding a new list_dev.
This also fixes a problem where we have called kzalloc(..., GFP_KERNEL)
from within rcu-lock, which isn't allowed as kzalloc can sleep when
called with GFP_KERNEL.
With CONFIG_DEBUG_ATOMIC_SLEEP set, we get following lockdep-splat:
include/linux/rcupdate.h:578 Illegal context switch in RCU read-side critical section!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
5 locks held by swapper/0/1:
#0: (&dev->mutex){......}, at: [<c02f68f4>] __driver_attach+0x48/0x98
#1: (&dev->mutex){......}, at: [<c02f6904>] __driver_attach+0x58/0x98
#2: (cpu_hotplug.lock){++++++}, at: [<c00249d0>] get_online_cpus+0x40/0xb0
#3: (subsys mutex#5){+.+.+.}, at: [<c02f4f8c>] subsys_interface_register+0x44/0xdc
#4: (rcu_read_lock){......}, at: [<c0305c80>] dev_pm_opp_set_sharing_cpus+0x0/0x1e4
stack backtrace:
CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 4.3.0-rc7-00047-g81f5932958a8 #59
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[<c0016874>] (unwind_backtrace) from [<c001355c>] (show_stack+0x10/0x14)
[<c001355c>] (show_stack) from [<c022553c>] (dump_stack+0x94/0xbc)
[<c022553c>] (dump_stack) from [<c004904c>] (___might_sleep+0x24c/0x298)
[<c004904c>] (___might_sleep) from [<c00f07e4>] (kmem_cache_alloc+0xe8/0x164)
[<c00f07e4>] (kmem_cache_alloc) from [<c0305354>] (_add_list_dev+0x30/0x58)
[<c0305354>] (_add_list_dev) from [<c0305d50>] (dev_pm_opp_set_sharing_cpus+0xd0/0x1e4)
[<c0305d50>] (dev_pm_opp_set_sharing_cpus) from [<c040eda4>] (cpufreq_init+0x4cc/0x62c)
[<c040eda4>] (cpufreq_init) from [<c040a964>] (cpufreq_online+0xbc/0x73c)
[<c040a964>] (cpufreq_online) from [<c02f4fe0>] (subsys_interface_register+0x98/0xdc)
[<c02f4fe0>] (subsys_interface_register) from [<c040a640>] (cpufreq_register_driver+0x110/0x17c)
[<c040a640>] (cpufreq_register_driver) from [<c040ef64>] (dt_cpufreq_probe+0x60/0x8c)
[<c040ef64>] (dt_cpufreq_probe) from [<c02f8084>] (platform_drv_probe+0x44/0xa4)
[<c02f8084>] (platform_drv_probe) from [<c02f67c0>] (driver_probe_device+0x208/0x2f4)
[<c02f67c0>] (driver_probe_device) from [<c02f6940>] (__driver_attach+0x94/0x98)
[<c02f6940>] (__driver_attach) from [<c02f4c1c>] (bus_for_each_dev+0x68/0x9c)
Reported-by: Michael Turquette <mturquette@baylibre.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.3 <stable@vger.kernel.org> # 4.3
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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We are returning 0 even in case of errors, fix it.
Fixes: 8d4d4e98acd6 ("PM / OPP: Add helpers for initializing CPU OPPs")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.3 <stable@vger.kernel.org> # 4.3
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Move all DT parsing for the power supplies to a single function, rather
than keeping them at separate places. This will help manage things
properly.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Clearly distinguish routines based on what version of bindings they
parse. We have already postfixed routines properly with _v2 for new
bindings. Postfix the older ones now with _v1.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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To identify OPP core's print messages easily, prefix them with
KBUILD_MODNAME.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal updates from Zhang Rui:
- Implement generic devfreq cooling mechanism through frequency
reduction for devices using devfreq. From Ørjan Eide and Javi
Merino.
- Introduce OMAP3 support on TI SoC thermal driver. From Pavel Mack
and Eduardo Valentin.
- A bounch of small fixes on devfreq_cooling, Exynos, IMX, Armada, and
Rockchip thermal drivers.
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (24 commits)
thermal: exynos: Directly return 0 instead of using local ret variable
thermal: exynos: Remove unneeded semicolon
thermal: exynos: Use IS_ERR() because regulator cannot be NULL
thermal: exynos: Fix first temperature read after registering sensor
thermal: exynos: Fix unbalanced regulator disable on probe failure
devfreq_cooling: return on allocation failure
thermal: rockchip: support the sleep pinctrl state to avoid glitches in s2r
dt-bindings: rockchip-thermal: Add the pinctrl states in this document
thermal: devfreq_cooling: Make power a u64
thermal: devfreq_cooling: use a thermal_cooling_device for register and unregister
thermal: underflow bug in imx_set_trip_temp()
thermal: armada: Fix possible overflow in the Armada 380 thermal sensor formula
thermal: imx: register irq handler later in probe
thermal: rockhip: fix setting thermal shutdown polarity
thermal: rockchip: fix handling of invalid readings
devfreq_cooling: add trace information
thermal: Add devfreq cooling
PM / OPP: get the voltage for all OPPs
tools/thermal: tmon: use pkg-config also for CFLAGS
linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS
...
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git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc
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The OPP library is now used for power models to calculate the power
that a device would consume at a specific OPP. To do that, we use a
simple power model which takes frequency and voltage as inputs. We get
the voltage and frequency from the OPP library.
The devfreq cooling device for the thermal framework controls
temperature by disabling OPPs. The power model needs to calculate the
power that would be consumed if we reenabled the OPP. Therefore, let
dev_pm_opp_get_voltage() work for disabled OPPs.
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson:
"As we've enabled multiplatform kernels on ARM, and greatly done away
with the contents under arch/arm/mach-*, there's still need for
SoC-related drivers to go somewhere.
Many of them go in through other driver trees, but we still have
drivers/soc to hold some of the "doesn't fit anywhere" lowlevel code
that might be shared between ARM and ARM64 (or just in general makes
sense to not have under the architecture directory).
This branch contains mostly such code:
- Drivers for qualcomm SoCs for SMEM, SMD and SMD-RPM, used to
communicate with power management blocks on these SoCs for use by
clock, regulator and bus frequency drivers.
- Allwinner Reduced Serial Bus driver, again used to communicate with
PMICs.
- Drivers for ARM's SCPI (System Control Processor). Not to be
confused with PSCI (Power State Coordination Interface). SCPI is
used to communicate with the assistant embedded cores doing power
management, and we have yet to see how many of them will implement
this for their hardware vs abstracting in other ways (or not at all
like in the past).
- To make confusion between SCPI and PSCI more likely, this release
also includes an update of PSCI to interface version 1.0.
- Rockchip support for power domains.
- A driver to talk to the firmware on Raspberry Pi"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (57 commits)
soc: qcom: smd-rpm: Correct size of outgoing message
bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus
bus: sunxi-rsb: Add Allwinner Reduced Serial Bus (RSB) controller bindings
ARM: bcm2835: add mutual inclusion protection
drivers: psci: make PSCI 1.0 functions initialization version dependent
dt-bindings: Correct paths in Rockchip power domains binding document
soc: rockchip: power-domain: don't try to print the clock name in error case
soc: qcom/smem: add HWSPINLOCK dependency
clk: berlin: add cpuclk
ARM: berlin: dts: add CLKID_CPU for BG2Q
ARM: bcm2835: Add the Raspberry Pi firmware driver
soc: qcom: smem: Move RPM message ram out of smem DT node
soc: qcom: smd-rpm: Correct the active vs sleep state flagging
soc: qcom: smd: delete unneeded of_node_put
firmware: qcom-scm: build for correct architecture level
soc: qcom: smd: Correct SMEM items for upper channels
qcom-scm: add missing prototype for qcom_scm_is_available()
qcom-scm: fix endianess issue in __qcom_scm_is_call_available
soc: qcom: smd: Reject send of too big packets
soc: qcom: smd: Handle big endian CPUs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/drivers
Merge "Rockchip power-domain drivers for 4.4" from Heiko Stuebner:
Add the power-domain base-driver which currently contains
support for the rk3288 powerdomain layout but can be easily
extended for the socs (including arm64) later on.
A big thanks to Ceasar Wang for pulling through on this
during 18 revisions.
Also included is a fix to the pm-clock handling in the generic
powerdomains to adapt it to the per-user clock handling we now
do, Acked by Rafael Wysocki.
* tag 'v4.4-rockchip-drivers1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
soc: rockchip: power-domain: Add power domain driver
dt-bindings: add document of Rockchip power domains
PM / clk: Do not __clk_get passed in clock-references
dt-bindings: add power-domain header for RK3288 SoCs
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Clock references are on a per-user basis now, so they are not supposed
to be refcounted by itself anymore. Therefore multiple cascaded get and
put calls will fail.
When a clock reference gets passed into pm_clk_add_clk we can assume
that the pm clock handling will take control of the clock reference,
so after this functions returns the caller should've given up control
of that handle.
So remove the additional call to __clk_get() in __pm_clk_add().
The only current user of pm_clk_add_clk is drivers/clk/shmobile/clk-mstp.c
which already follows this paradigm by only getting the clock but not
puting it after passing the reference into pm_clk_add_clk.
In the error case the caller is expected to clean up the clock, as it
may very well try to do something different if pm_clk_add_clk() fails.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
[add commit-message]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"The majority of the changes are driver updates and new device support.
The core framework is mostly unchanged this time around, with only a
couple patches to expose a clk provider API and make getting clk
parent names from DT more robust.
Driver updates:
- Support for clock controllers found on Broadcom Northstar SoCs and
bcm2835 SoC
- Support for Allwinner audio clocks
- A few cleanup patches for Tegra drivers and support for the highest
DFLL frequencies on Tegra124
- Samsung exynos7 fixes and improvements
- i.Mx SoC updates to add a few missing clocks and keep debug uart
clocks on during kernel intialization
- Some mediatek cleanups and support for more subsystem clocks
- Support for msm8916 gpu/audio clocks and qcom's GDSC power domain
controllers
- A new driver for the Silabs si514 clock chip"
* tag 'clk-for-linus-20151104' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (143 commits)
clk: qcom: msm8960: Fix dsi1/2 halt bits
clk: lpc18xx-cgu: fix potential system hang when disabling unused clocks
clk: lpc18xx-ccu: fix potential system hang when disabling unused clocks
clk: Add clk_hw_is_enabled() for use by clk providers
clk: Add stubs for of_clk_*() APIs when CONFIG_OF=n
clk: versatile-icst: fix memory leak
clk: Remove clk_{register,unregister}_multiplier()
clk: iproc: define Broadcom NS2 iProc clock binding
clk: iproc: define Broadcom NSP iProc clock binding
clk: ns2: add clock support for Broadcom Northstar 2 SoC
clk: iproc: Separate status and control variables
clk: iproc: Split off dig_filter
clk: iproc: Add PLL base write function
clk: nsp: add clock support for Broadcom Northstar Plus SoC
clk: iproc: Add PWRCTRL support
clk: cygnus: Convert all macros to all caps
ARM: cygnus: fix link failures when CONFIG_COMMON_CLK_IPROC is disabled
clk: imx31: add missing of_node_put
clk: imx27: add missing of_node_put
clk: si5351: add missing of_node_put
...
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Export these symbols so they can be used in loadable kernel
modules.
Cc: Rob Clark <robdclark@gmail.com>
Cc: Rajendra Nayak <rnayak@codeaurora.org>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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* pm-avs:
PM / AVS: rockchip-io: Fix module autoload for OF platform driver
* pm-clk:
PM / clk: Fix broken build due to non-matching code and header #ifdefs
* powercap:
powercap / RAPL: Enable Broxton RAPL support
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If an architecture's main Kconfig file doesn't include
kernel/power/Kconfig, but CONFIG_PM=y and HAVE_CLK=y (e.g. m68knommu
allmodconfig):
drivers/base/power/clock_ops.c: In function ‘__pm_clk_add’:
drivers/base/power/clock_ops.c:106: error: ‘struct pm_subsys_data’ has no member named ‘clock_list’
drivers/base/power/clock_ops.c: At top level:
drivers/base/power/clock_ops.c:120: error: redefinition of ‘pm_clk_add’
include/linux/pm_clock.h:64: error: previous definition of ‘pm_clk_add’ was here
drivers/base/power/clock_ops.c:135: error: redefinition of ‘pm_clk_add_clk’
include/linux/pm_clock.h:69: error: previous definition of ‘pm_clk_add_clk’ was here
drivers/base/power/clock_ops.c:171: error: redefinition of ‘pm_clk_remove’
include/linux/pm_clock.h:73: error: previous definition of ‘pm_clk_remove’ was here
drivers/base/power/clock_ops.c: In function ‘pm_clk_remove’:
drivers/base/power/clock_ops.c:180: error: ‘struct pm_subsys_data’ has no member named ‘clock_list’
drivers/base/power/clock_ops.c:180: error: ‘struct pm_subsys_data’ has no member named ‘clock_list’
drivers/base/power/clock_ops.c: At top level:
drivers/base/power/clock_ops.c:207: error: redefinition of ‘pm_clk_init’
include/linux/pm_clock.h:54: error: previous definition of ‘pm_clk_init’ was here
drivers/base/power/clock_ops.c: In function ‘pm_clk_init’:
drivers/base/power/clock_ops.c:210: error: ‘struct pm_subsys_data’ has no member named ‘clock_list’
drivers/base/power/clock_ops.c: At top level:
drivers/base/power/clock_ops.c:221: error: redefinition of ‘pm_clk_create’
include/linux/pm_clock.h:57: error: previous definition of ‘pm_clk_create’ was here
drivers/base/power/clock_ops.c:234: error: redefinition of ‘pm_clk_destroy’
include/linux/pm_clock.h:61: error: previous definition of ‘pm_clk_destroy’ was here
drivers/base/power/clock_ops.c: In function ‘pm_clk_destroy’:
drivers/base/power/clock_ops.c:246: error: ‘struct pm_subsys_data’ has no member named ‘clock_list’
drivers/base/power/clock_ops.c:246: error: ‘struct pm_subsys_data’ has no member named ‘clock_list’
drivers/base/power/clock_ops.c: At top level:
drivers/base/power/clock_ops.c:263: error: expected identifier or ‘(’ before ‘void’
drivers/base/power/clock_ops.c:263: error: expected ‘)’ before numeric constant
drivers/base/power/clock_ops.c:293: error: expected identifier or ‘(’ before ‘void’
drivers/base/power/clock_ops.c:293: error: expected ‘)’ before numeric constant
drivers/base/power/clock_ops.c: In function ‘pm_clk_runtime_suspend’:
drivers/base/power/clock_ops.c:384: error: called object ‘0u’ is not a function
drivers/base/power/clock_ops.c: In function ‘pm_clk_runtime_resume’:
drivers/base/power/clock_ops.c:400: error: called object ‘0u’ is not a function
This happens because:
- drivers/base/power/clock_ops.c depends on CONFIG_HAVE_CLK,
- the failing code inside clock_ops.c additionally depends on
CONFIG_PM,
- the forward declarations and other definitions in <linux/pm_clock.h>
depend on CONFIG_PM_CLK,
- CONFIG_PM_CLK is defined as PM && HAVE_CLK in kernel/power/Kconfig,
but it is not included on all architectures.
Fix this by protecting the failing code inside clock_ops.c by
CONFIG_PM_CLK instead of CONFIG_PM, so it matches <linux/pm_clock.h>.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* pm-opp:
PM / OPP: passing NULL to PTR_ERR()
PM / OPP: Move cpu specific code to opp/cpu.c
PM / OPP: Move opp core to its own directory
PM / OPP: Prefix exported opp routines with dev_pm_opp_
PM / OPP: Rename opp init/free table routines
PM / OPP: reuse of_parse_phandle()
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The code was using PTR_ERR(NULL) which causes a static checker warning.
I have fixed up the printks and changed the return to -ENOENT.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Move cpu device specific code out of generic opp library, and add it to
cpu.c.
Along with that, create a core-internal opp.h header, which will be used
to share structures and function prototypes within opp core.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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OPP code is expanding and is already present in multiple directories
(cpufreq and power). Lets move it to its own directory, to manage it
better.
This also moves/renames the cpufreq_opp file to cpu.c, as it will
contain helpers for cpu device. Its not just about cpufreq, other
frameworks can use OPPs as well.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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That's the naming convention followed in most of opp core, but few
routines didn't follow this, fix them.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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free-table routines are opposite of init-table ones, and must be named
to make that clear. Opposite of 'init' is 'exit', but those doesn't suit
really well.
Replace 'init' with 'add' and 'free' with 'remove'.
Reported-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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We already have a better API to get the opp descriptor block's node from
cpu-node. Lets reuse that instead of creating our own routines for the
same stuff. That cleans the code a lot.
This also kills a check we had earlier (as we are using the generic API
now). Earlier we used to check if the operating-points-v2 property
contained multiple phandles instead of a single phandle.
Killing this check isn't an issue because, we only parse the first entry
with of_parse_phandle(). So, if a user passes multiple phandles, its
really his problem :)
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* pm-domains:
PM / Domains: Merge measurements for PM QoS device latencies
PM / Domains: Don't measure ->start|stop() latency in system PM callbacks
PM / Domains: Rename *pm_genpd_poweron|poweroff()
PM / Domains: Remove pm_genpd_poweron() API
PM / Domains: Remove pm_genpd_poweroff_unused() API
soc: dove: Let genpd deal with disabling of unused PM domains
PM / Domains: Remove in_progress counter from struct generic_pm_domain
PM / domains: Drop unused label
PM / Domains: Remove cpuidle attach
PM / Domains: Remove name based API for genpd
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Measure latency does by itself contribute to an increased latency, thus we
should avoid it when it isn't needed.
By merging the latency measurements for the ->save_state() and the
->stop() callbacks, we get one measurement instead of two and we get one
value to store instead of two. Let's also apply the likewise change for
the ->start() and ->restore_state() callbacks.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Lina Iyer <lina.iyer@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Measure latency does by itself contribute to an increased latency, thus we
should avoid it when it isn't needed.
Genpd measures latencies in the system PM phase for the ->start|stop()
callbacks and is thus affecting the system PM suspend/resume time.
Moreover these latencies are validated only at runtime PM suspend/resume.
To this reasoning, let's decide to leave these measurements out of the
system PM phase. There should be plenty of occasions during runtime PM to
perform these measurements anyway.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Lina Iyer <lina.iyer@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This is another step to get consistent names of functions in genpd. Let's
rename the internal *pm_genpd_poweron|poweroff() into
*genpd_poweron|poweroff().
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Once genpd could be configured to be built with CONFIG_PM_RUNTIME unset
(nowadays CONFIG_PM), the pm_genpd_poweron() API served a purpose, since
it allowed users to power on a PM domain.
As such configuration no longer is supported, users shall solely rely on
using some of the runtime PM APIs to power on a PM domain.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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As the last user of the pm_genpd_poweroff_unused() API has moved into
relying on genpd to deal with this internally from a late_initcall, let's
remove the API.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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