user/sven/linux.git/include/linux/devfreq.h, branch v4.9.6

PM / devfreq: Add new passive governor

2016-05-03T02:20:07Z

This patch adds the new passive governor for DEVFREQ framework. The following governors are already present and used for DVFS (Dynamic Voltage and Frequency Scaling) drivers. The following governors are independently used for one device driver which don't give the influence to other device drviers and also don't receive the effect from other device drivers. - ondemand / performance / powersave / userspace The passive governor depends on operation of parent driver with specific governos extremely and is not able to decide the new frequency by oneself. According to the decided new frequency of parent driver with governor, the passive governor uses it to decide the appropriate frequency for own device driver. The passive governor must need the following information from device tree: - the source clock and OPP tables - the instance of parent device For exameple, there are one more devfreq device drivers which need to change their source clock according to their utilization on runtime. But, they share the same power line (e.g., regulator). So, specific device driver is operated as parent with ondemand governor and then the rest device driver with passive governor is influenced by parent device. Suggested-by: Myungjoo Ham Signed-off-by: Chanwoo Choi [tjakobi: Reported RCU locking issue and cw00.choi fix it] Reported-by: Tobias Jakobi [linux.amoon: Reported possible recursive locking and cw00.choi fix it] Reported-by: Anand Moon Signed-off-by: MyungJoo Ham Acked-by: Krzysztof Kozlowski

PM / devfreq: Add new DEVFREQ_TRANSITION_NOTIFIER notifier

2016-05-03T02:20:07Z

This patch adds the new DEVFREQ_TRANSITION_NOTIFIER notifier to send the notification when the frequency of device is changed. This notifier has two state as following: - DEVFREQ_PRECHANGE : Notify it before chaning the frequency of device - DEVFREQ_POSTCHANGE : Notify it after changed the frequency of device And this patch adds the resourced-managed function to release the resource automatically when error happen. Signed-off-by: Chanwoo Choi [m.reichl and linux.amoon: Tested it on exynos4412-odroidu3 board] Tested-by: Markus Reichl Tested-by: Anand Moon Signed-off-by: MyungJoo Ham Acked-by: Krzysztof Kozlowski

PM / devfreq: Add devfreq_get_devfreq_by_phandle()

2016-05-03T02:20:06Z

This patch adds the new devfreq_get_devfreq_by_phandle() OF helper function which can find the instance of devfreq device by using phandle ("devfreq"). Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham [m.reichl and linux.amoon: Tested it on exynos4412-odroidu3 board] Tested-by: Markus Reichl Tested-by: Anand Moon Acked-by: Krzysztof Kozlowski

PM / devfreq: Set the freq_table of devfreq device

2016-01-13T08:30:32Z

This patch initialize the freq_table array of each devfreq device by using the devfreq_set_freq_table(). If freq_table is NULL, the devfreq framework is not able to support the frequency transtion information through sysfs. The OPP core uses the integer type for the number of opps in the opp list and uses the 'unsigned long' type for each frequency. So, this patch modifies the type of some variable as following: - the type of freq_table : unsigned int -> unsigned long - the type of max_state : unsigned int -> int - Corrected types, format strings, mutex usages by MyungJoo Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: comments for get_dev_status usage updated

2015-09-11T05:23:29Z

With the introduction of devfreq_update_stats(), governors are not recommended to use get_dev_status() directly. Signed-off-by: MyungJoo Ham

PM / devfreq: cache the last call to get_dev_status()

2015-09-11T05:23:28Z

The return value of get_dev_status() can be reused. Cache it so that other parts of the kernel can reuse it instead of having to call the same function again. Cc: Kyungmin Park Signed-off-by: Javi Merino Signed-off-by: MyungJoo Ham

PM: Eliminate CONFIG_PM_RUNTIME

2014-12-19T21:55:06Z

Having switched over all of the users of CONFIG_PM_RUNTIME to use CONFIG_PM directly, turn the latter into a user-selectable option and drop the former entirely from the tree. Signed-off-by: Rafael J. Wysocki Reviewed-by: Ulf Hansson Acked-by: Kevin Hilman

PM / devfreq: Add devm_devfreq_{register,unregister}_opp_notfier function

2014-05-24T13:33:41Z

This patch add resource-managed function for devfreq opp as following functions. The devm_devfreq_register_opp_notifier() manages automatically the registration of devfreq opp using device resource management. - devm_devfreq_register_opp_notifier - devm_devfreq_unregister_opp_notifier() Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

PM / devfreq: Add resource-managed function for devfreq device

2014-05-24T13:33:38Z

This patch add resource-managed function for devfreq device as following functions. The devm_devfreq_add_device() manages automatically the memory of devfreq device using device resource management. - devm_devfreq_add_device() - devm_devfreq_remove_device() Signed-off-by: Chanwoo Choi Signed-off-by: MyungJoo Ham

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-16T00:47:22Z

Pull trivial tree updates from Jiri Kosina: "Usual earth-shaking, news-breaking, rocket science pile from trivial.git" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits) doc: usb: Fix typo in Documentation/usb/gadget_configs.txt doc: add missing files to timers/00-INDEX timekeeping: Fix some trivial typos in comments mm: Fix some trivial typos in comments irq: Fix some trivial typos in comments NUMA: fix typos in Kconfig help text mm: update 00-INDEX doc: Documentation/DMA-attributes.txt fix typo DRM: comment: `halve' -> `half' Docs: Kconfig: `devlopers' -> `developers' doc: typo on word accounting in kprobes.c in mutliple architectures treewide: fix "usefull" typo treewide: fix "distingush" typo mm/Kconfig: Grammar s/an/a/ kexec: Typo s/the/then/ Documentation/kvm: Update cpuid documentation for steal time and pv eoi treewide: Fix common typo in "identify" __page_to_pfn: Fix typo in comment Correct some typos for word frequency clk: fixed-factor: Fix a trivial typo ...