linux-toradex.git/drivers/devfreq/devfreq.c, branch v5.17-rc4 Linux kernel for Apalis and Colibri modules PM / devfreq: Reduce log severity for informative message 2021-12-16T02:29:54+00:00 Tzung-Bi Shih tzungbi@google.com 2021-12-14T06:31:00+00:00 4667431419e93b63b4edfe7abdfc96cefcbcc051 Suppose devfreq_update_status() failure in devfreq_set_target() is not a critical error, reduces the log severity. Signed-off-by: Tzung-Bi Shih <tzungbi@google.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Suppose devfreq_update_status() failure in devfreq_set_target() is not a
critical error, reduces the log severity.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Merge branches 'pm-opp' and 'pm-cpufreq' 2021-11-10T13:06:51+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2021-11-10T13:06:51+00:00 dcc0b6f2e63ac3bdcea5c9686de4cb1684f2eb33 Merge operating performance points (OPP) framework updates for and intel_pstate driver fixes for 5.16-rc1. * pm-opp: dt-bindings: opp: Allow multi-worded OPP entry name opp: Fix return in _opp_add_static_v2() PM / devfreq: tegra30: Check whether clk_round_rate() returns zero rate PM / devfreq: tegra30: Use resource-managed helpers PM / devfreq: Add devm_devfreq_add_governor() opp: Add more resource-managed variants of dev_pm_opp_of_add_table() opp: Change type of dev_pm_opp_attach_genpd(names) argument opp: Fix required-opps phandle array count check * pm-cpufreq: cpufreq: intel_pstate: Clear HWP Status during HWP Interrupt enable cpufreq: intel_pstate: Fix unchecked MSR 0x773 access cpufreq: intel_pstate: Clear HWP desired on suspend/shutdown and offline 
Merge operating performance points (OPP) framework updates for and
intel_pstate driver fixes for 5.16-rc1.

* pm-opp:
  dt-bindings: opp: Allow multi-worded OPP entry name
  opp: Fix return in _opp_add_static_v2()
  PM / devfreq: tegra30: Check whether clk_round_rate() returns zero rate
  PM / devfreq: tegra30: Use resource-managed helpers
  PM / devfreq: Add devm_devfreq_add_governor()
  opp: Add more resource-managed variants of dev_pm_opp_of_add_table()
  opp: Change type of dev_pm_opp_attach_genpd(names) argument
  opp: Fix required-opps phandle array count check

* pm-cpufreq:
  cpufreq: intel_pstate: Clear HWP Status during HWP Interrupt enable
  cpufreq: intel_pstate: Fix unchecked MSR 0x773 access
  cpufreq: intel_pstate: Clear HWP desired on suspend/shutdown and offline
PM / devfreq: Strengthen check for freq_table 2021-10-27T05:22:12+00:00 Samuel Holland samuel@sholland.org 2021-09-29T04:42:45+00:00 5cf79c293821d12fd88dee901692cd404247782e Since commit ea572f816032 ("PM / devfreq: Change return type of devfreq_set_freq_table()"), all devfreq devices are expected to have a valid freq_table. The devfreq core unconditionally dereferences freq_table in the sysfs code and in get_freq_range(). Therefore, we need to ensure that freq_table is both non-null and non-empty (length is > 0). If either check fails, replace the table using set_freq_table() or return the error. Signed-off-by: Samuel Holland <samuel@sholland.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Since commit ea572f816032 ("PM / devfreq: Change return type of
devfreq_set_freq_table()"), all devfreq devices are expected to have a
valid freq_table. The devfreq core unconditionally dereferences
freq_table in the sysfs code and in get_freq_range().

Therefore, we need to ensure that freq_table is both non-null and
non-empty (length is > 0). If either check fails, replace the table
using set_freq_table() or return the error.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Add devm_devfreq_add_governor() 2021-10-05T04:24:38+00:00 Dmitry Osipenko digetx@gmail.com 2021-09-20T17:22:47+00:00 1cc55204b0dbba0ca09cc14624cbbeeb2d35742f Add resource-managed variant of devfreq_add_governor(). Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> 
Add resource-managed variant of devfreq_add_governor().

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
devfreq: use HZ macros 2021-09-08T18:50:26+00:00 Daniel Lezcano daniel.lezcano@linaro.org 2021-09-08T02:57:54+00:00 04c8984ae3fa4373948483e367561c79fda7f571 HZ unit conversion macros are available in units.h, use them and remove the duplicate definition. The new macro has an unsigned long type. All the code is dealing with unsigned long and the code using the macro is doing a coercitive cast to unsigned long. Link: https://lkml.kernel.org/r/20210816114732.1834145-5-daniel.lezcano@linaro.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Christian Eggers <ceggers@arri.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Lukasz Luba <lukasz.luba@arm.com> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: MyungJoo Ham <myungjoo.ham@samsung.com> Cc: Peter Meerwald <pmeerw@pmeerw.net> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
HZ unit conversion macros are available in units.h, use them and remove
the duplicate definition.

The new macro has an unsigned long type.

All the code is dealing with unsigned long and the code using the macro is
doing a coercitive cast to unsigned long.

Link: https://lkml.kernel.org/r/20210816114732.1834145-5-daniel.lezcano@linaro.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Christian Eggers <ceggers@arri.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Lukasz Luba <lukasz.luba@arm.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
PM / devfreq: Add missing error code in devfreq_add_device() 2021-05-20T03:16:41+00:00 YueHaibing yuehaibing@huawei.com 2021-05-14T06:48:43+00:00 18b380ed61f892ed06838d1f1a5124d966292ed3 Set err code in the error path before jumping to the end of the function. Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Set err code in the error path before jumping to the end of the function.

Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Use more accurate returned new_freq as resume_freq 2021-04-08T04:14:45+00:00 Dong Aisheng aisheng.dong@nxp.com 2021-03-23T07:20:08+00:00 62453f1ba5d5def9d58e140a50f3f168f028da38 Use the more accurate returned new_freq as resume_freq. It's the same as how devfreq->previous_freq was updated. Fixes: 83f8ca45afbf0 ("PM / devfreq: add support for suspend/resume of a devfreq device") Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Use the more accurate returned new_freq as resume_freq.
It's the same as how devfreq->previous_freq was updated.

Fixes: 83f8ca45afbf0 ("PM / devfreq: add support for suspend/resume of a devfreq device")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Unlock mutex and free devfreq struct in error path 2021-04-08T04:14:45+00:00 Lukasz Luba lukasz.luba@arm.com 2021-03-15T09:31:23+00:00 8b50a7995770d41a2e8d9c422cd2882aca0dedd2 The devfreq->lock is held for time of setup. Release the lock in the error path, before jumping to the end of the function. Change the goto destination which frees the allocated memory. Cc: v5.9+ <stable@vger.kernel.org> # v5.9+ Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode") Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
The devfreq->lock is held for time of setup. Release the lock in the
error path, before jumping to the end of the function.

Change the goto destination which frees the allocated memory.

Cc: v5.9+ <stable@vger.kernel.org> # v5.9+
Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode")
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Register devfreq as a cooling device on demand 2021-03-09T06:40:16+00:00 Daniel Lezcano daniel.lezcano@linaro.org 2021-03-08T13:30:37+00:00 1224451bb6f938023dd7fa4e7ba43bfb185bc9e3 Currently the default behavior is to manually having the devfreq backend to register themselves as a devfreq cooling device. Instead of adding the code in the drivers for the thermal cooling device registering, let's provide a flag in the devfreq's profile to tell the common devfreq code to register the newly created devfreq as a cooling device. Suggested-by: Chanwoo Choi <cwchoi00@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Currently the default behavior is to manually having the devfreq
backend to register themselves as a devfreq cooling device.

Instead of adding the code in the drivers for the thermal cooling
device registering, let's provide a flag in the devfreq's profile to
tell the common devfreq code to register the newly created devfreq as
a cooling device.

Suggested-by: Chanwoo Choi <cwchoi00@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Merge branches 'pm-devfreq' and 'pm-tools' 2021-02-15T16:02:04+00:00 Rafael J. Wysocki rafael.j.wysocki@intel.com 2021-02-15T16:02:04+00:00 332fd9005bd36b9e0277ea51027555cf223bd780 * pm-devfreq: PM / devfreq: rk3399_dmc: Remove unneeded semicolon PM / devfreq: Replace devfreq->dev.parent as dev in devfreq_add_device PM / devfreq: Correct spelling in a comment * pm-tools: cpupower: Add cpuid cap flag for MSR_AMD_HWCR support cpupower: Remove family arg to decode_pstates() cpupower: Condense pstate enabled bit checks in decode_pstates() cpupower: Update family checks when decoding HW pstates cpupower: Remove unused pscur variable. cpupower: Add CPUPOWER_CAP_AMD_HW_PSTATE cpuid caps flag cpupower: Correct macro name for CPB caps flag cpupower: Update msr_pstate union struct naming cpupower: add Makefile dependencies for install targets 
* pm-devfreq:
  PM / devfreq: rk3399_dmc: Remove unneeded semicolon
  PM / devfreq: Replace devfreq->dev.parent as dev in devfreq_add_device
  PM / devfreq: Correct spelling in a comment

* pm-tools:
  cpupower: Add cpuid cap flag for MSR_AMD_HWCR support
  cpupower: Remove family arg to decode_pstates()
  cpupower: Condense pstate enabled bit checks in decode_pstates()
  cpupower: Update family checks when decoding HW pstates
  cpupower: Remove unused pscur variable.
  cpupower: Add CPUPOWER_CAP_AMD_HW_PSTATE cpuid caps flag
  cpupower: Correct macro name for CPB caps flag
  cpupower: Update msr_pstate union struct naming
  cpupower: add Makefile dependencies for install targets