Enric Balletbo i Serra a4496d52b3 power: supply: add input power and voltage limit properties ... For thermal management strategy you might be interested on limit the input power for a power supply. We already have current limit but basically what we probably want is to limit power. So, introduce the input_power_limit property. Although the common use case is limit the input power, in some specific cases it is the voltage that is problematic (i.e some regulators have different efficiencies at higher voltage resulting in more heat). So introduce also the input_voltage_limit property. This happens in one Chromebook and is used on the Pixel C's thermal management strategy to effectively limit the input power to 5V 3A when the screen is on. When the screen is on, the display, the CPU, and the GPU all contribute more heat to the system than while the screen is off, and we made a tradeoff to throttle the charger in order to give more of the thermal budget to those other components. So there's nothing fundamentally broken about the hardware that would cause the Pixel C to malfunction if we were charging at 9V or 12V instead of 5V when the screen is on, i.e. if userspace doesn't change this. What would happen is that you wouldn't meet Google's skin temperature targets on the system if the charger was allowed to run at 9V or 12V with the screen on. For folks hacking on Pixel Cs (which is now outside of Google's official support window for Android) and customizing their own kernel and userspace this would be acceptable, but we wanted to expose this feature in the power supply properties because the feature does exist in the Emedded Controller firmware of the Pixel C and all of Google's Chromebooks with USB-C made since 2015 in case someone running an up to date kernel wanted to limit the charging power for thermal or other reasons. This patch exposes a new property, similar to input current limit, to re-configure the maximum voltage from the external supply at runtime based on system-level knowledge or user input. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Guenter Roeck <groeck@chromium.org> Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>		2019-06-28 17:28:27 +02:00
..
ABI	power: supply: add input power and voltage limit properties	2019-06-28 17:28:27 +02:00
EDID	Docs/EDID: Calculate CRC while building the code	2018-11-06 07:36:22 -07:00
PCI	pci-v4.20-changes	2018-10-25 06:50:48 -07:00
RCU	doc: Fix typos and otherwise modernize checklist.txt	2019-03-26 14:37:06 -07:00
accelerators	…
accounting	psi: introduce psi monitor	2019-05-14 19:52:48 -07:00
acpi/dsd	LED updates for 5.2-rc1.	2019-05-07 18:02:51 -07:00
admin-guide	panic: add an option to replay all the printk message in buffer	2019-05-18 15:52:26 -07:00
aoe	…
arm	ARM: 8833/1: Ensure that NEON code always compiles with Clang	2019-02-12 15:20:09 +00:00
arm64	* ARM: support for SVE and Pointer Authentication in guests, PMU improvements	2019-05-17 10:33:30 -07:00
auxdisplay	…
backlight	…
block	block: null: Add documentation for "zone_nr_conv" param	2019-04-09 08:18:23 -06:00
blockdev	zram: idle writeback fixes and cleanup	2019-01-08 17:15:10 -08:00
bpf	docs/btf: fix the missing section marks	2019-05-09 15:59:59 -07:00
bus-devices	…
cdrom	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
cgroup-v1	A fairly routine cycle for docs - lots of typo fixes, some new documents,	2019-03-09 09:56:17 -08:00
cma	…
connector	…
console	Documentation: corrections to console/console.txt	2018-08-10 16:09:40 -06:00
core-api	lib: Move mathematic helpers to separate folder	2019-05-14 19:52:49 -07:00
cpu-freq	Documentation: cpu-freq: Frequencies aren't always sorted	2018-11-07 13:29:04 +01:00
crypto	crypto: shash - remove shash_desc::flags	2019-04-25 15:38:12 +08:00
dev-tools	gcov: docs: add a note on GCC vs Clang differences	2019-05-14 19:52:51 -07:00
device-mapper	dm integrity: add a bitmap mode	2019-05-08 13:41:58 -04:00
devicetree	dt-bindings: power: reset: add document for NVMEM based reboot-mode	2019-06-25 23:49:57 +02:00
doc-guide	docs: doc-guide: remove the extension from .rst files	2019-04-19 12:46:27 -06:00
driver-api	This is the bulk of the GPIO changes for the v5.2 kernel cycle:	2019-05-11 10:54:43 -04:00
driver-model	i2c: core: add device-managed version of i2c_new_dummy	2019-05-17 19:29:40 +02:00
early-userspace	Correct gen_init_cpio tool's documentation	2018-11-25 12:25:53 -07:00
extcon	…
fault-injection	doc: fault-injection: fix macro name in example	2019-01-07 15:36:11 -07:00
fb	fbdev: fbmem: convert CONFIG_FB_LOGO_CENTER into a cmd line option	2019-01-16 17:42:35 +01:00
features	Merge branch 'parisc-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux	2019-05-07 19:34:17 -07:00
filesystems	autofs: add description of ignore pseudo mount option	2019-05-14 19:52:50 -07:00
firmware-guide	Documentation: ACPI: Direct references are allowed to devices only	2019-05-13 10:40:21 +02:00
firmware_class	…
fmc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
fpga	docs: fpga: add a document for FPGA Device Feature List (DFL) Framework Overview	2018-07-15 13:55:44 +02:00
gpio	docs: gpio: convert docs to ReST and rename to *.rst	2019-04-23 23:30:07 +02:00
gpu	drm: add drm_format_helper.c to kerneldoc	2019-04-17 09:39:22 +02:00
hid	HID: doc: fix wrong data structure reference for UHID_OUTPUT	2018-12-18 14:55:22 +01:00
hwmon	hwmon: (lm75) Add support for TMP75B	2019-05-03 13:16:18 -07:00
i2c	i2c-piix4: Add Hygon Dhyana SMBus support	2019-05-03 16:47:54 +02:00
ia64	…
ide	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
iio	…
infiniband	Documentation/infiniband: update from locked to pinned_vm	2019-02-07 12:56:23 -07:00
input	doc: Change LXR references to elixir.bootlin.com	2019-02-01 16:05:03 -07:00
interconnect	interconnect: Add generic on-chip interconnect API	2019-01-22 13:37:25 +01:00
ioctl	seccomp: add a return code to trap to userspace	2018-12-11 16:28:41 -08:00
isdn	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
kbuild	moduleparam: Save information about built-in modules in separate file	2019-05-07 21:50:24 +09:00
kdump	kdump: Document kernel data exported in the vmcoreinfo note	2019-01-15 11:05:28 +01:00
kernel-hacking	doc:it_IT: translation for kernel-hacking	2018-07-26 16:21:09 -06:00
laptops	Documentation: fix lg-laptop.rst warnings	2019-02-11 08:27:47 -07:00
leds	Documentation: Use "while" instead of "whilst"	2018-11-20 09:30:43 -07:00
lightnvm	…
livepatch	docs/livepatch: Unify style of livepatch documentation in the ReST format	2019-05-07 16:06:28 -06:00
locking	Documentation/locking/lockdep: Drop last two chars of sample states	2019-03-04 12:55:18 -07:00
m68k	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
maintainer	docs: Fix more broken references	2018-06-15 18:11:26 -03:00
md	…
media	media updates for v5.2-rc1	2019-05-16 11:57:16 -07:00
memory-devices	…
mic	…
mips	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
misc-devices	Documentation: add ibmvmc to toctree(index) and fix warnings	2019-01-14 08:37:17 -07:00
mmc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
mtd	Documentation: mtd: remove stale pxa3xx NAND controller documentation	2018-09-04 23:37:38 +02:00
namespaces	…
netlabel	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
networking	rxrpc: Allow the kernel to mark a call as being non-interruptible	2019-05-16 16:25:20 +01:00
nfc	…
nios2	…
nvdimm	libnvdimm/security: Add documentation for nvdimm security support	2018-12-21 12:44:41 -08:00
nvmem	Documentation: nvmem: document cell tables and lookup entries	2018-09-28 15:14:54 +02:00
openrisc	…
parisc	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
pcmcia	pcmcia: remove long deprecated pcmcia_request_exclusive_irq() function	2018-08-18 12:30:42 -07:00
perf	Documentation: perf: Add documentation for ThunderX2 PMU uncore driver	2018-12-06 12:29:47 +00:00
phy	…
platform	…
power	power: supply: add input power and voltage limit properties	2019-06-28 17:28:27 +02:00
powerpc	Documentation: powerpc: Expand the DAWR acronym	2019-05-03 02:54:58 +10:00
pps	…
process	A reasonably busy cycle for docs, including:	2019-05-08 12:42:50 -07:00
pti	…
ptp	…
rapidio	…
riscv	…
s390	Documentation: Use "while" instead of "whilst"	2018-11-20 09:30:43 -07:00
scheduler	sched/doc: Document Energy Aware Scheduling	2019-01-27 12:29:37 +01:00
scsi	scsi: ufs-bsg: Allow reading descriptors	2019-02-27 09:00:02 -05:00
security	doc: security: Add kern-doc for lsm_hooks.h	2019-02-22 08:54:09 -07:00
serial	docs: serial: convert docs to ReST and rename to *.rst	2019-04-25 11:37:42 +02:00
sh	sh: remove board_time_init() callback	2018-12-18 16:13:04 +01:00
sound	ALSA: doc: my_chip has no element ioport	2019-04-03 11:55:47 +02:00
sparc	docs: sparc: convert to ReST	2019-05-08 17:13:35 -07:00
sphinx	Documentation/sphinx: allow "functions" with no parameters	2018-06-30 07:52:42 -06:00
sphinx-static	docs: improve readability for people with poorer eyesight	2018-10-07 09:16:50 -06:00
spi	spi-summary: document set_cs_timing	2019-04-08 14:13:43 +07:00
sysctl	userfaultfd/sysctl: add vm.unprivileged_userfaultfd	2019-05-14 09:47:45 -07:00
target	scsi: target/core: Remove the write_pending_status() callback function	2019-02-04 21:23:59 -05:00
thermal	docs: hwmon: Add an index file and rename docs to *.rst	2019-04-17 10:37:23 -07:00
timers	Docs: Correct /proc/stat path	2019-02-22 08:50:17 -07:00
trace	The major changes in this tracing update includes:	2019-05-15 16:05:47 -07:00
translations	Some late arriving documentation changes. In particular, this contains the	2019-05-10 13:24:53 -04:00
usb	docs: usb: convert documents to ReST	2019-04-16 12:16:19 +02:00
userspace-api	Documentation: seccomp: unify list indentation	2019-03-18 12:00:28 -06:00
virtual	* ARM: support for SVE and Pointer Authentication in guests, PMU improvements	2019-05-17 10:33:30 -07:00
vm	mm/hmm: add default fault flags to avoid the need to pre-fill pfns arrays	2019-05-14 09:47:48 -07:00
w1	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00
watchdog	Documentation/watchdog: Add documentation mlx-wdt driver	2019-03-02 15:28:20 +01:00
wimax	…
x86	x86/speculation/mds: Improve CPU buffer clear documentation	2019-05-16 09:05:12 +02:00
xilinx	drivers: Defer probe if firmware is not ready	2019-03-18 13:45:27 +01:00
xtensa	xtensa: document boot parameter passing	2019-02-03 18:06:19 -08:00
.gitignore	…
Changes	…
CodingStyle	…
DMA-API-HOWTO.txt	DMA mapping updates for 5.2	2019-05-09 08:40:55 -07:00
DMA-API.txt	virtio: fixes, cleanups	2019-03-10 12:47:57 -07:00
DMA-ISA-LPC.txt	Documentation/DMA-ISA-LPC: fix an incorrect reference	2019-02-11 08:23:07 -07:00
DMA-attributes.txt	…
IPMI.txt	…
IRQ-affinity.txt	…
IRQ-domain.txt	…
IRQ.txt	…
Intel-IOMMU.txt	…
Makefile	docs: Makefile: use latexmk if available	2019-04-01 14:33:42 -06:00
SAK.txt	…
SM501.txt	…
SubmittingPatches	…
atomic_bitops.txt	docs: atomic_bitops.txt: add a title for this document	2019-04-11 12:37:02 -06:00
atomic_t.txt	Documentation/atomic_t: Clarify signed vs unsigned	2019-03-18 10:27:52 -07:00
bt8xxgpio.txt	…
btmrvl.txt	…
bus-virt-phys-mapping.txt	…
clearing-warn-once.txt	A reasonably busy cycle for docs, including:	2019-05-08 12:42:50 -07:00
conf.py	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
cpu-load.txt	…
cputopology.txt	topology: Simplify cputopology.txt formatting and wording	2019-04-19 10:56:04 +02:00
crc32.txt	…
dcdbas.txt	…
debugging-modules.txt	…
debugging-via-ohci1394.txt	…
dell_rbu.txt	…
digsig.txt	…
docutils.conf	…
dontdiff	A reasonably busy cycle for docs, including:	2019-05-08 12:42:50 -07:00
efi-stub.txt	efi_stub: update documentation on dtb= parameter	2018-09-09 14:46:44 -06:00
eisa.txt	…
futex-requeue-pi.txt	…
gcc-plugins.txt	…
highuid.txt	…
hw_random.txt	…
hwspinlock.txt	…
index.rst	Merge branch 'x86-mds-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-05-14 07:57:29 -07:00
intel_txt.txt	…
io-mapping.txt	…
io_ordering.txt	…
iostats.txt	block: Track DISCARD statistics and output them in stat and diskstat	2018-07-18 08:44:22 -06:00
irqflags-tracing.txt	…
isa.txt	…
isapnp.txt	…
kernel-per-CPU-kthreads.txt	doc: Update removal of RCU-bh/sched update machinery	2018-08-30 10:59:48 -07:00
kobject.txt	kref/kobject: Improve documentation	2018-12-06 13:57:03 +01:00
kprobes.txt	Merge branch 'parisc-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux	2019-05-07 19:34:17 -07:00
kref.txt	…
ldm.txt	…
lockup-watchdogs.txt	…
logo.gif	…
logo.txt	…
lsm.txt	…
lzo.txt	lib/lzo: fix bugs for very short or empty input	2019-04-05 16:02:30 -10:00
mailbox.txt	…
memory-barriers.txt	docs/memory-barriers.txt: Update I/O section to be clearer about CPU vs thread	2019-04-23 13:34:17 +01:00
men-chameleon-bus.txt	…
nommu-mmap.txt	Documentation: nommu-map: Fix duplicate word typo	2018-06-26 09:01:27 -06:00
ntb.txt	docs: ntb.txt: add blank lines to clean up some Sphinx warnings	2019-04-11 12:37:03 -06:00
numastat.txt	…
packing.txt	lib: Add support for generic packing operations	2019-05-03 10:49:17 -04:00
padata.txt	…
parport-lowlevel.txt	…
percpu-rw-semaphore.txt	…
phy.txt	…
pi-futex.txt	…
pnp.txt	…
preempt-locking.txt	x86/fpu: Remove fpu__restore()	2019-04-09 19:27:42 +02:00
pwm.txt	…
rbtree.txt	…
remoteproc.txt	…
rfkill.txt	rfkill: Fix several typos in documentation	2018-06-15 13:36:08 +02:00
robust-futex-ABI.txt	…
robust-futexes.txt	futex: Update comments and docs about return values of arch futex code	2019-04-26 13:57:55 +01:00
rpmsg.txt	…
rtc.txt	Documentation: rtc: Correct location of rtctest.c	2019-03-25 10:34:55 -06:00
sgi-ioc4.txt	…
siphash.txt	…
smsc_ece1099.txt	…
speculation.txt	docs: speculation.txt: mark example blocks as such	2019-04-11 12:37:03 -06:00
static-keys.txt	static_keys.txt: Fix trivial spelling mistake	2019-02-06 16:44:16 -07:00
svga.txt	…
switchtec.txt	NTB: switchtec_ntb: Update switchtec documentation with prerequisites for NTB	2018-10-11 11:28:53 -05:00
sync_file.txt	…
tee.txt	…
this_cpu_ops.txt	…
unaligned-memory-access.txt	docs: unaligned-memory-access.txt: use a lowercase title	2019-04-11 12:37:03 -06:00
vfio-mediated-device.txt	vfio/mdev: Check globally for duplicate devices	2018-06-08 10:24:27 -06:00
vfio.txt	…
video-output.txt	docs: video-output.txt: convert it to ReST format	2019-04-11 12:37:03 -06:00
xillybus.txt	…
xz.txt	…
zorro.txt	…