linux.git/drivers/thermal, branch v4.2-rc7

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into for-rc

2015-08-03T15:11:25+00:00

thermal: Drop owner assignment from platform_driver

2015-08-03T15:10:23+00:00

platform_driver does not need to set an owner because
platform_driver_register() will set it.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Zhang Rui

thermal: exynos: Remove unused code related to platform_data on probe()

2015-08-03T02:36:57+00:00

This patch removes the unused code related to struct exynos_tmu_platform_data
because exynos_tmu_probe() don't handle the struct exynos_tmu_platform_data *pdata.

Test HW: Exynos4412 - Trats2 board

Cc: Zhang Rui 
Cc: Eduardo Valentin 
Cc: Lukasz Majewski 
Signed-off-by: Chanwoo Choi 
Signed-off-by: Lukasz Majewski 
Tested-by: Lukasz Majewski 
Signed-off-by: Eduardo Valentin

thermal: exynos: Add the dependency of CONFIG_THERMAL_OF instead of CONFIG_OF

2015-08-03T02:36:57+00:00

The exynos thermal driver use the of_thermal_*() API to parse the basic data
for thermal management from devicetree file. So, if CONFIG_EXYNOS_THERMAL is
selected without CONFIG_THERMAL_OF, kernel can build it without any problem.
But, exynos thermal driver is not working with following error log. This patch
add the dependency of CONFIG_THERMAL_OF instead of CONFIG_OF.

[    1.458644] get_th_reg: Cannot get trip points from of-thermal.c!
[    1.459096] get_th_reg: Cannot get trip points from of-thermal.c!
[    1.465211] exynos4412_tmu_initialize: No CRITICAL trip point defined at of-thermal.c!

Cc: Zhang Rui 
Cc: Eduardo Valentin 
Cc: Lukasz Majewski 
Signed-off-by: Chanwoo Choi 
Signed-off-by: Lukasz Majewski 
Signed-off-by: Eduardo Valentin

thermal: exynos: Disable the regulator on probe failure

2015-08-03T02:36:57+00:00

During probe the regulator (if present) was enabled but not disabled in
case of failure. So an unsuccessful probe lead to enabling the
regulator which was actually not needed because the device was not
enabled.

Additionally each deferred probe lead to increase of regulator enable
count so it would not be effectively disabled during removal of the
device.

Test HW: Exynos4412 - Trats2 board

Signed-off-by: Krzysztof Kozlowski 
Fixes: 498d22f616f6 ("thermal: exynos: Support for TMU regulator defined at device tree")
Cc: 
Reviewed-by: Javier Martinez Canillas 
Signed-off-by: Lukasz Majewski 
Tested-by: Lukasz Majewski 
Signed-off-by: Eduardo Valentin

thermal: power_allocator: trace the real requested power

2015-08-03T02:36:57+00:00

The power allocator governor uses ftrace to output a bunch of internal
data for debugging and tuning.  Currently, the requested power it
outputs is the "weighted" requested power, that is, what each cooling
device has requested multiplied by the cooling device weight.  It is
more useful to trace the real request, without any weight being
applied.

This commit only affects the data traced, there is no functional change.

Cc: Zhang Rui 
Cc: Eduardo Valentin 
Signed-off-by: Javi Merino 
Signed-off-by: Eduardo Valentin

thermal: remove dangling 'weight_attr' device file

2015-08-03T02:36:57+00:00

This file isn't getting removed while we unbind a device from thermal
zone. And this causes following messages when the device is registered
again:

WARNING: CPU: 0 PID: 2228 at /home/viresh/linux/fs/sysfs/dir.c:31 sysfs_warn_dup+0x60/0x70()
sysfs: cannot create duplicate filename '/devices/virtual/thermal/thermal_zone0/cdev0_weight'
Modules linked in: cpufreq_dt(+) [last unloaded: cpufreq_dt]
CPU: 0 PID: 2228 Comm: insmod Not tainted 4.2.0-rc3-00059-g44fffd9473eb #272
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[] (unwind_backtrace) from [] (show_stack+0x10/0x14)
[] (show_stack) from [] (dump_stack+0x84/0xc4)
[] (dump_stack) from [] (warn_slowpath_common+0x80/0xb0)
[] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40)
[] (warn_slowpath_fmt) from [] (sysfs_warn_dup+0x60/0x70)
[] (sysfs_warn_dup) from [] (sysfs_add_file_mode_ns+0x13c/0x190)
[] (sysfs_add_file_mode_ns) from [] (sysfs_create_file_ns+0x3c/0x48)
[] (sysfs_create_file_ns) from [] (thermal_zone_bind_cooling_device+0x260/0x358)
[] (thermal_zone_bind_cooling_device) from [] (of_thermal_bind+0x88/0xb4)
[] (of_thermal_bind) from [] (__thermal_cooling_device_register+0x17c/0x2e0)
[] (__thermal_cooling_device_register) from [] (__cpufreq_cooling_register+0x3a0/0x51c)
[] (__cpufreq_cooling_register) from [] (cpufreq_ready+0x44/0x88 [cpufreq_dt])
[] (cpufreq_ready [cpufreq_dt]) from [] (cpufreq_add_dev+0x4a0/0x7dc)
[] (cpufreq_add_dev) from [] (subsys_interface_register+0x94/0xd8)
[] (subsys_interface_register) from [] (cpufreq_register_driver+0x10c/0x1f0)
[] (cpufreq_register_driver) from [] (dt_cpufreq_probe+0x60/0x8c [cpufreq_dt])
[] (dt_cpufreq_probe [cpufreq_dt]) from [] (platform_drv_probe+0x44/0xa4)
[] (platform_drv_probe) from [] (driver_probe_device+0x174/0x2b4)
[] (driver_probe_device) from [] (__driver_attach+0x8c/0x90)
[] (__driver_attach) from [] (bus_for_each_dev+0x68/0x9c)
[] (bus_for_each_dev) from [] (bus_add_driver+0x19c/0x214)
[] (bus_add_driver) from [] (driver_register+0x78/0xf8)
[] (driver_register) from [] (do_one_initcall+0x8c/0x1d4)
[] (do_one_initcall) from [] (do_init_module+0x5c/0x1b8)
[] (do_init_module) from [] (load_module+0xd34/0xed8)
[] (load_module) from [] (SyS_init_module+0xd0/0x120)
[] (SyS_init_module) from [] (ret_fast_syscall+0x0/0x3c)
---[ end trace 3be0e7b7dc6e3c4f ]---

Fixes: db91651311c8 ("thermal: export weight to sysfs")
Acked-by: Javi Merino 
Signed-off-by: Viresh Kumar 
Signed-off-by: Eduardo Valentin

Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

2015-07-01T17:49:25+00:00

Pull module updates from Rusty Russell:
 "Main excitement here is Peter Zijlstra's lockless rbtree optimization
  to speed module address lookup.  He found some abusers of the module
  lock doing that too.

  A little bit of parameter work here too; including Dan Streetman's
  breaking up the big param mutex so writing a parameter can load
  another module (yeah, really).  Unfortunately that broke the usual
  suspects, !CONFIG_MODULES and !CONFIG_SYSFS, so those fixes were
  appended too"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (26 commits)
  modules: only use mod->param_lock if CONFIG_MODULES
  param: fix module param locks when !CONFIG_SYSFS.
  rcu: merge fix for Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE()
  module: add per-module param_lock
  module: make perm const
  params: suppress unused variable error, warn once just in case code changes.
  modules: clarify CONFIG_MODULE_COMPRESS help, suggest 'N'.
  kernel/module.c: avoid ifdefs for sig_enforce declaration
  kernel/workqueue.c: remove ifdefs over wq_power_efficient
  kernel/params.c: export param_ops_bool_enable_only
  kernel/params.c: generalize bool_enable_only
  kernel/module.c: use generic module param operaters for sig_enforce
  kernel/params: constify struct kernel_param_ops uses
  sysfs: tightened sysfs permission checks
  module: Rework module_addr_{min,max}
  module: Use __module_address() for module_address_lookup()
  module: Make the mod_tree stuff conditional on PERF_EVENTS || TRACING
  module: Optimize __module_address() using a latched RB-tree
  rbtree: Implement generic latch_tree
  seqlock: Introduce raw_read_seqcount_latch()
  ...

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

2015-06-26T00:51:55+00:00

Pull thermal management updates from Zhang Rui:
 "Specifics:

   - enhance Thermal Framework with several new capabilities:

       * use power estimates
       * compute weights with relative integers instead of percentages
       * allow governors to have private data in thermal zones
       * export thermal zone parameters through sysfs

     Thanks to the ARM thermal team (Javi, Punit, KP).

   - introduce a new thermal governor: power allocator.  First in kernel
     closed loop PI(D) controller for thermal control.  Thanks to ARM
     thermal team.

   - enhance OF thermal to allow thermal zones to have sustainable power
     HW specification.  Thanks to Punit.

   - introduce thermal driver for Intel Quark SoC x1000platform.  Thanks
     to Ong, Boon Leong.

   - introduce QPNP PMIC temperature alarm driver.  Thanks to Ivan T. I.

   - introduce thermal driver for Hisilicon hi6220.  Thanks to
     kongxinwei.

   - enhance Exynos thermal driver to handle Exynos5433 TMU.  Thanks to
     Chanwoo C.

   - TI thermal driver now has a better implementation for EOCZ bit.
     From Pavel M.

   - add id for Skylake processors in int340x processor thermal driver.

   - a couple of small fixes and cleanups."

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (36 commits)
  thermal: hisilicon: add new hisilicon thermal sensor driver
  dt-bindings: Document the hi6220 thermal sensor bindings
  thermal: of-thermal: add support for reading coefficients property
  thermal: support slope and offset coefficients
  thermal: power_allocator: round the division when divvying up power
  thermal: exynos: Add the support for Exynos5433 TMU
  thermal: cpu_cooling: Fix power calculation when CPUs are offline
  thermal: cpu_cooling: Remove cpu_dev update on policy CPU update
  thermal: export thermal_zone_parameters to sysfs
  thermal: cpu_cooling: Check memory allocation of power_table
  ti-soc-thermal: request temperature periodically if hw can't do that itself
  ti-soc-thermal: implement eocz bit to make driver useful on omap3
  cleanup ti-soc-thermal
  thermal: remove stale THERMAL_POWER_ACTOR select
  thermal: Default OF created trip points to writable
  thermal: core: Add Kconfig option to enable writable trips
  thermal: x86_pkg_temp: drop const for thermal_zone_parameters
  of: thermal: Introduce sustainable power for a thermal zone
  thermal: add trace events to the power allocator governor
  thermal: introduce the Power Allocator governor
  ...

Merge branches 'release' and 'thermal-soc' of .git into next

2015-06-11T04:52:14+00:00