linux/drivers/opp, branch v6.4

Merge tag 'devicetree-for-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2023-04-27T17:09:05Z

Pull more devicetree updates from Rob Herring: - First part of DT header detangling dropping cpu.h from of_device.h and replacing some includes with forward declarations. A handful of drivers needed some adjustment to their includes as a result. - Refactor of_device.h to be used by bus drivers rather than various device drivers. This moves non-bus related functions out of of_device.h. The end goal is for of_platform.h and of_device.h to stop including each other. - Refactor open coded parsing of "ranges" in some bus drivers to use DT address parsing functions - Add some new address parsing functions of_property_read_reg(), of_range_count(), and of_range_to_resource() in preparation to convert more open coded parsing of DT addresses to use them. - Treewide clean-ups to use of_property_read_bool() and of_property_present() as appropriate. The ones here are the ones that didn't get picked up elsewhere. * tag 'devicetree-for-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (34 commits) bus: tegra-gmi: Replace of_platform.h with explicit includes hte: Use of_property_present() for testing DT property presence w1: w1-gpio: Use of_property_read_bool() for boolean properties virt: fsl: Use of_property_present() for testing DT property presence soc: fsl: Use of_property_present() for testing DT property presence sbus: display7seg: Use of_property_read_bool() for boolean properties sparc: Use of_property_read_bool() for boolean properties sparc: Use of_property_present() for testing DT property presence bus: mvebu-mbus: Remove open coded "ranges" parsing of/address: Add of_property_read_reg() helper of/address: Add of_range_count() helper of/address: Add support for 3 address cell bus of/address: Add of_range_to_resource() helper of: unittest: Add bus address range parsing tests of: Drop cpu.h include from of_device.h OPP: Adjust includes to remove of_device.h irqchip: loongson-eiointc: Add explicit include for cpuhotplug.h cpuidle: Adjust includes to remove of_device.h cpufreq: sun50i: Add explicit include for cpu.h cpufreq: Adjust includes to remove of_device.h ...

OPP: Adjust includes to remove of_device.h

2023-04-13T22:46:35Z

Now that of_cpu_device_node_get() is defined in of.h, of_device.h is just implicitly including other includes, and is no longer needed. Adjust the include files with what was implicitly included by of_device.h (cpu.h and of.h) and drop including of_device.h. Acked-by: Viresh Kumar Link: https://lore.kernel.org/r/20230329-dt-cpu-header-cleanups-v1-18-581e2605fe47@kernel.org Signed-off-by: Rob Herring

OPP: Move required opps configuration to specialized callback

2023-04-03T04:15:09Z

The required-opps configuration is closely tied to genpd and performance states at the moment and it is not very obvious that required-opps can live without genpds. Though we don't support configuring required-opps for non-genpd cases currently. This commit aims at separating these parts, where configuring genpds would be a special case of configuring the required-opps. Add a specialized callback, set_required_opps(), to the opp table and set it to different callbacks accordingly. This shouldn't result in any functional changes for now. Signed-off-by: Viresh Kumar Reviewed-by: Ulf Hansson

OPP: Handle all genpd cases together in _set_required_opps()

2023-04-03T04:15:09Z

There is no real need of keeping separate code for single genpd case, it can be made to work with a simple change. Signed-off-by: Viresh Kumar Reviewed-by: Ulf Hansson

opp: Use of_property_present() for testing DT property presence

2023-03-13T04:29:41Z

It is preferred to use typed property access functions (i.e. of_property_read_ functions) rather than low-level of_get_property/of_find_property functions for reading properties. As part of this, convert of_get_property/of_find_property calls to the recently added of_property_present() helper when we just want to test for presence of a property and nothing more. Signed-off-by: Rob Herring Signed-off-by: Viresh Kumar

OPP: fix error checking in opp_migrate_dentry()

2023-02-08T05:10:59Z

Since commit ff9fb72bc077 ("debugfs: return error values, not NULL") changed return value of debugfs_rename() in error cases from %NULL to %ERR_PTR(-ERROR), we should also check error values instead of NULL. Fixes: ff9fb72bc077 ("debugfs: return error values, not NULL") Signed-off-by: Qi Zheng Signed-off-by: Viresh Kumar

drivers/opp: Remove "select SRCU"

2023-01-05T06:17:21Z

Now that the SRCU Kconfig option is unconditionally selected, there is no longer any point in selecting it. Therefore, remove the "select SRCU" Kconfig statements. Signed-off-by: Paul E. McKenney Cc: Viresh Kumar Cc: Nishanth Menon Cc: Stephen Boyd Cc: Signed-off-by: Viresh Kumar

OPP: decouple dt properties in opp_parse_supplies()

2022-11-04T05:29:07Z

The opp-microwatt property was added with the intention of providing platforms a way to specify a precise value for the power consumption of a device at a given OPP to enable better energy-aware scheduling decisions by informing the kernel of the total static and dynamic power of a device at a given OPP, removing the reliance on the EM subsystem's often flawed estimations. This property is parsed by opp_parse_supplies(), which creates a hard dependency on the opp-microvolt property. Some platforms, such as Apple Silicon, do not describe their device's voltage regulators in the DT as they cannot be controlled by the kernel and/or rely on opaque firmware algorithms to control their voltage and current characteristics at runtime. We can, however, experimentally determine the power consumption of a given device at a given OPP, taking advantage of opp-microwatt to provide EAS on such devices as was initially intended. Allow platforms to specify and consume any subset of opp-microvolt, opp-microamp, or opp-microwatt without a hard dependency on opp-microvolt to enable this functionality on such platforms. Tested-by: James Calligeros Signed-off-by: James Calligeros Co-developed-by: Viresh Kumar Signed-off-by: Viresh Kumar

OPP: Simplify opp_parse_supplies() by restructuring it

2022-11-04T05:29:05Z

opp_parse_supplies() has grown into too big of a routine (~190 lines) and it is not straight-forward to understand it anymore. Break it into smaller routines and reduce code redundancy a bit by using the same code to parse properties. This shouldn't result in any logical changes. Tested-by: James Calligeros Signed-off-by: Viresh Kumar

OPP: Parse named opp-microwatt property too

2022-11-04T05:29:03Z

We missed parsing the named opp-microwatt- property, fix that. Tested-by: James Calligeros Signed-off-by: Viresh Kumar