Commit Graph

13 Commits

Author SHA1 Message Date
Viresh Kumar 8a31d9d942 PM / OPP: Update OPP users to put reference
This patch updates dev_pm_opp_find_freq_*() routines to get a reference
to the OPPs returned by them.

Also updates the users of dev_pm_opp_find_freq_*() routines to call
dev_pm_opp_put() after they are done using the OPPs.

As it is guaranteed the that OPPs wouldn't get freed while being used,
the RCU read side locking present with the users isn't required anymore.
Drop it as well.

This patch also updates all users of devfreq_recommended_opp() which was
returning an OPP received from the OPP core.

Note that some of the OPP core routines have gained
rcu_read_{lock|unlock}() calls, as those still use RCU specific APIs
within them.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> [Devfreq]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-30 09:22:21 +01:00
Linus Torvalds bfb764440d Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:

 - Introduce generic ADC thermal driver, based on OF thermal (Laxman
   Dewangan)

 - Introduce new thermal driver for Tango chips (Marc Gonzalez)

 - Rockchip driver support for RK3399, RK3366, and some fixes (Caesar
   Wang, Elaine Zhang and Shawn Lin)

 - Add CPU power cooling model to Mediatek thermal driver (Dawei Chien)

 - Wider usage of dev_thermal_zone_of_sensor_register (Eduardo Valentin)

 - TI thermal driver gained a new maintainer (Keerthy).

 - Enabled powerclamp driver by checking CPU feature and package cstate
   counter instead of CPU whitelist (Jacob Pan)

 - Various fixes on thermal governor, OF thermal, Tegra, and RCAR

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (50 commits)
  thermal: tango: initialize TEMPSI_CFG
  thermal: rockchip: use the usleep_range instead of udelay
  thermal: rockchip: add the notes for better reading
  thermal: rockchip: Support RK3366 SoCs in the thermal driver
  thermal: rockchip: handle the power sequence for tsadc controller
  thermal: rockchip: update the tsadc table for rk3399
  thermal: rockchip: fixes the code_to_temp for tsadc driver
  thermal: rockchip: disable thermal->clk in err case
  thermal: tegra: add Tegra132 specific SOC_THERM driver
  thermal: fix ptr_ret.cocci warnings
  thermal: mediatek: Add cpu dynamic power cooling model.
  thermal: generic-adc: Add ADC based thermal sensor driver
  thermal: generic-adc: Add DT binding for ADC based thermal sensor
  thermal: tegra: fix static checker warning
  thermal: tegra: mark PM functions __maybe_unused
  thermal: add temperature sensor support for tango SoC
  thermal: hisilicon: fix IRQ imbalance enabling
  thermal: hisilicon: support to use any sensor
  thermal: rcar: Remove binding docs for r8a7794
  thermal: tegra: add PM support
  ...
2016-05-26 09:23:43 -07:00
Dawei Chien d29016034e thermal: mediatek: Add cpu dynamic power cooling model.
MT8173 cpufreq driver select of_cpufreq_power_cooling_register registering
cooling devices with dynamic power coefficient.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dawei Chien <dawei.chien@mediatek.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2016-05-17 07:28:31 -07:00
Geliang Tang d2499d05f0 cpufreq: mt8173: use list_for_each_entry*()
Use list_for_each_entry*() instead of list_for_each*() to simplify
the code.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-09 01:27:54 +02:00
Arnd Bergmann 3c2002aec3 cpufreq: mediatek: allow building as a module
The MT8173 cpufreq driver can currently only be built-in, but
it has a Kconfig dependency on the thermal core. THERMAL
can be a loadable module, which in turn makes this driver
impossible to build.

It is nicer to make the cpufreq driver a module as well, so
this patch turns the option in to a 'tristate' and adapts
the dependency accordingly.

The driver has no module_exit() function, so it will continue
to not support unloading, but it can be built as a module
and loaded at runtime now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 5269e7067c (cpufreq: Add ARM_MT8173_CPUFREQ dependency on THERMAL)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-01 02:43:05 +01:00
Pi-Cheng Chen a889331d75 cpufreq: mt8173: migrate to use operating-points-v2 bindings
Modify mt8173-cpufreq driver to get OPP-sharing information and set up
OPP table provided by operating-points-v2 bindings.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-02 00:49:33 +01:00
Pi-Cheng Chen 89b56047f6 cpufreq: mt8173: Move resources allocation into ->probe()
Since the return value of ->init() of cpufreq driver is not propagated
to the device driver model now, move resources allocation into
->probe() to handle -EPROBE_DEFER properly.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-12 02:27:16 +01:00
Pi-Cheng Chen 40be4c3ccb cpufreq: mt8173: check return value of regulator_get_voltage() call
Sometimes regulator_get_voltage() call returns negative values for
reasons(e.g. underlying I2C bus timeout). Add check for the return
values and fail out early.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-10 00:27:33 +01:00
Pi-Cheng Chen 93625d52e7 cpufreq: mt8173: remove redundant regulator_get_voltage() call
Remove redundant regulator_get_voltage() call to get Vsram value
since it will be obtained later at the beginning of voltage tracking
loop.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-10 00:27:33 +01:00
Pi-Cheng Chen 9bb46b87d6 cpufreq: mt8173: add CPUFREQ_HAVE_GOVERNOR_PER_POLICY flag
Add CPUFREQ_HAVE_GOVERNOR_PER_POLICY to have individual set of tunables
for each cluster of MT8173.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-10 00:27:32 +01:00
Viresh Kumar 8f8d37b253 PM / OPP: Prefix exported opp routines with dev_pm_opp_
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>
2015-09-15 02:03:16 +02:00
Viresh Kumar f0489a5ef4 PM / OPP: Rename opp init/free table routines
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>
2015-09-15 02:03:15 +02:00
Pi-Cheng Chen 1453863fb0 cpufreq: mediatek: Add MT8173 cpufreq driver
Mediatek MT8173 is an ARMv8 based quad-core (2*Cortex-A53 and
2*Cortex-A72) SoC with duall clusters. For each cluster, two voltage
inputs, Vproc and Vsram are supplied by two regulators. For the big
cluster, two regulators come from different PMICs. In this case, when
scaling voltage inputs of the cluster, the voltages of two regulator
inputs need to be controlled by software explicitly under the SoC
specific limitation:

	100mV < Vsram - Vproc < 200mV

which is called 'voltage tracking' mechanism. And when scaling the
frequency of cluster clock input, the input MUX need to be parented to
another "intermediate" stable PLL first and reparented to the original
PLL once the original PLL is stable at the target frequency. This patch
implements those mechanisms to enable CPU DVFS support for Mediatek
MT8173 SoC.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-09-01 15:50:20 +02:00