kernel/linux.git/drivers/devfreq/exynos-bus.c, branch v5.2.13

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

PM / devfreq: exynos-bus: Suspend all devices on system shutdown

2019-04-16T00:29:18+00:00

Force all Exynos buses to safe operation points before doing the system reboot operation. There are board on which some aggressive power saving operation points are behind the capabilities of the bootloader to properly reset the hardware and boot the board. This way one can avoid board crash early after reboot. This fixes reboot issue on OdroidU3 board both with eMMC and SD boot. Reported-by: Markus Reichl Signed-off-by: Marek Szyprowski Acked-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: Define the constant governor name

2017-10-26T08:08:40+00:00

Prior to that, the devfreq device uses the governor name when adding the itself. In order to prevent the mistake used the wrong governor name, this patch defines the governor name as a constant and then uses them instead of using the string directly. Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: linux-samsung-soc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org

Merge branch 'pm-devfreq'

2017-02-20T13:23:40+00:00

* pm-devfreq: PM / devfreq: Modify the device name as devfreq(X) for sysfs PM / devfreq: Simplify the sysfs name of devfreq-event device PM / devfreq: Remove unnecessary separate _remove_devfreq() PM / devfreq: Fix wrong trans_stat of passive devfreq device PM / devfreq: Fix available_governor sysfs PM / devfreq: exynos-ppmu: Show the registred device for ppmu device PM / devfreq: Fix the wrong description for userspace governor PM / devfreq: Fix the checkpatch warnings PM / devfreq: exynos-bus: Print the real clock rate of bus PM / devfreq: exynos-ppmu: Use the regmap interface to handle the registers PM / devfreq: exynos-bus: Add the detailed correlation for Exynos5433 PM / devfreq: Don't delete sysfs group twice

PM / devfreq: exynos-bus: Print the real clock rate of bus

2017-01-31T05:12:19+00:00

This patch shows the real clock rate after calling clk_set_rate() to debug it. Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / OPP: Update OPP users to put reference

2017-01-30T08:22:21+00:00

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 Reviewed-by: Chanwoo Choi [Devfreq] Signed-off-by: Rafael J. Wysocki

PM / devfreq: exynos-bus: Fix the wrong return value

2017-01-02T23:21:45+00:00

This patch fixes the wrong return value. If devfreq driver requires the wrong and non-available governor, it is fail. So, this patch returns the error insead of -EPROBE_DEFER. Fixes: 403e0689d2a9 (PM / devfreq: exynos: Add support of bus frequency of sub-blocks using passive governor) Signed-off-by: Chanwoo Choi Signed-off-by: Rafael J. Wysocki

devfreq: exynos: Don't use OPP structures outside of RCU locks

2016-12-08T00:46:06+00:00

The OPP structures are abused to the best here, without understanding how the OPP core and RCU locks work. In short, the OPP pointer saved 'struct exynos_bus' can become invalid under your nose, as the OPP core may free it. Fix various abuses around OPP structures and calls. Signed-off-by: Viresh Kumar Acked-by: Chanwoo Choi Tested-by: Chanwoo Choi Signed-off-by: Rafael J. Wysocki

PM / devfreq: exynos-bus: add missing of_node_put after calling of_parse_phandle

2016-07-06T04:11:24+00:00

of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. [Commit updated to fix an error by MyungJoo] Cc: Chanwoo Choi Cc: MyungJoo Ham Cc: Kyungmin Park Cc: Kukjin Kim Cc: Krzysztof Kozlowski Signed-off-by: Peter Chen Acked-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: exynos: fix error path in exynos_bus_probe()

2016-07-06T04:11:24+00:00

In case of exynos_bus_parse_of() failure the code shouldn't try to remove the OPP table and disable+unprepare bus->clk as it has been already handled in exynos_bus_parse_of(). Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Chanwoo Choi Signed-off-by: MyungJoo Ham