linux/Documentation/ABI/testing
Robert Shearman f1fb64b04b i2c: mux: pca954x: allow management of device idle state via sysfs
The behaviour, by default, to not deselect after each transfer is
unsafe when there is a device with an address that conflicts with
another device on another mux on the same parent bus, and it
may not be convenient to use devicetree to set the deselect mux,
e.g. when running on x86_64 when ACPI is used to discover most of the
device hierarchy.

Therefore, provide the ability to set the idle state behaviour using a
new sysfs file, idle_state as a complement to the method of
instantiating the device via sysfs. The possible behaviours are
disconnect, i.e. to deselect all channels from the mux, as-is (the
default), i.e. leave the last channel selected, and set a
predetermined channel.

The current behaviour of leaving the channel as-is after each
transaction is preserved.

Signed-off-by: Robert Shearman <robert.shearman@att.com>
Signed-off-by: Peter Rosin <peda@axentia.se>
2019-04-21 23:44:37 +02:00
..
configfs-acpi
configfs-iio
configfs-rdma_cm
configfs-spear-pcie-gadget
configfs-stp-policy
configfs-stp-policy-p_sys-t stm class: p_sys-t: Document the configfs interface 2018-10-11 12:12:55 +02:00
configfs-usb-gadget
configfs-usb-gadget-acm
configfs-usb-gadget-ecm
configfs-usb-gadget-eem
configfs-usb-gadget-ffs
configfs-usb-gadget-hid
configfs-usb-gadget-loopback
configfs-usb-gadget-mass-storage
configfs-usb-gadget-midi
configfs-usb-gadget-ncm
configfs-usb-gadget-obex
configfs-usb-gadget-phonet
configfs-usb-gadget-printer
configfs-usb-gadget-rndis
configfs-usb-gadget-serial
configfs-usb-gadget-sourcesink
configfs-usb-gadget-subset
configfs-usb-gadget-tcm
configfs-usb-gadget-uac1
configfs-usb-gadget-uac1_legacy
configfs-usb-gadget-uac2
configfs-usb-gadget-uvc usb: gadget: uvc: configfs: Add bFrameIndex attributes 2018-09-24 19:00:35 +03:00
debugfs-cec-error-inj media: debugfs-cec-error-inj: document CEC error inj debugfs ABI 2018-03-22 08:54:52 -04:00
debugfs-driver-genwqe
debugfs-driver-habanalabs habanalabs: add debugfs support 2019-02-18 09:46:46 +01:00
debugfs-ec
debugfs-ideapad
debugfs-olpc
debugfs-pfo-nx-crypto
debugfs-pktcdvd
debugfs-wilco-ec platform/chrome: wilco_ec: Add support for raw commands in debugfs 2019-02-21 21:36:21 +01:00
dell-smbios-wmi
dev-kmsg
devlink-resource-mlxsw mlxsw: documentation: Add resources ABI documentation 2018-01-16 14:15:35 -05:00
evm EVM: Allow runtime modification of the set of verified xattrs 2018-05-18 15:34:45 -04:00
gpio-cdev
ima_policy ima: define a new policy condition based on the filesystem name 2018-05-22 07:33:53 -04:00
ppc-memtrace Documentation: Update documentation on ppc-memtrace 2018-08-10 22:12:32 +10:00
procfs-diskstats block: Track DISCARD statistics and output them in stat and diskstat 2018-07-18 08:44:22 -06:00
procfs-smaps_rollup
pstore
rtc-cdev Documentation: rtc: move iotcl interface documentation to ABI 2018-01-12 00:20:41 +01:00
sysfs-ata libata: transport: cleanup documentation of sysfs interface 2018-02-13 06:38:41 -08:00
sysfs-block block: add documentation for io_timeout 2019-01-04 19:19:51 -07:00
sysfs-block-aoe aoe: document sysfs interface 2018-02-23 08:17:28 -07:00
sysfs-block-bcache
sysfs-block-device libata: update documentation for sysfs interfaces 2018-02-13 06:41:02 -08:00
sysfs-block-dm
sysfs-block-loop block/loop: add documentation for sysfs interface 2018-02-23 08:20:11 -07:00
sysfs-block-rssd
sysfs-block-zram zram: idle writeback fixes and cleanup 2019-01-08 17:15:10 -08:00
sysfs-bus-acpi ACPI: sysfs: Update device object sysfs documentation 2018-02-21 23:36:39 +01:00
sysfs-bus-amba
sysfs-bus-bcma
sysfs-bus-coresight-devices-etb10
sysfs-bus-coresight-devices-etm3x
sysfs-bus-coresight-devices-etm4x
sysfs-bus-coresight-devices-funnel
sysfs-bus-coresight-devices-stm
sysfs-bus-coresight-devices-tmc coresight: tmc: Add configuration support for trace buffer size 2018-07-15 13:52:57 +02:00
sysfs-bus-css
sysfs-bus-event_source-devices-events
sysfs-bus-event_source-devices-format
sysfs-bus-event_source-devices-hv_24x7
sysfs-bus-event_source-devices-hv_gpci
sysfs-bus-fcoe
sysfs-bus-fsi
sysfs-bus-fsl-mc
sysfs-bus-hsi
sysfs-bus-i2c-devices-bq32k
sysfs-bus-i2c-devices-fsa9480
sysfs-bus-i2c-devices-hm6352
sysfs-bus-i2c-devices-lm3533
sysfs-bus-i2c-devices-pca954x i2c: mux: pca954x: allow management of device idle state via sysfs 2019-04-21 23:44:37 +02:00
sysfs-bus-i3c i3c: Add sysfs ABI spec 2018-11-12 10:33:50 +01:00
sysfs-bus-iio iio: Add modifiers for ethanol and H2 gases 2018-12-16 14:05:58 +00:00
sysfs-bus-iio-accel-bmc150
sysfs-bus-iio-adc-envelope-detector
sysfs-bus-iio-adc-hi8435
sysfs-bus-iio-adc-max9611
sysfs-bus-iio-adc-stm32
sysfs-bus-iio-chemical-vz89x iio: sysfs-bus-iio-*: update email contact 2018-02-17 12:39:46 +00:00
sysfs-bus-iio-counter-104-quad-8
sysfs-bus-iio-cros-ec
sysfs-bus-iio-dac-dpot-dac
sysfs-bus-iio-dfsdm-adc-stm32 IIO: ADC: add stm32 DFSDM support for PDM microphone 2018-01-10 10:30:13 +00:00
sysfs-bus-iio-distance-srf08
sysfs-bus-iio-frequency-ad9523
sysfs-bus-iio-frequency-adf4350
sysfs-bus-iio-gyro-bmg160
sysfs-bus-iio-health-afe440x
sysfs-bus-iio-humidity-hdc100x
sysfs-bus-iio-ina2xx-adc
sysfs-bus-iio-isl29501 iio: light: isl29501: Add support for the ISL29501 ToF sensor. 2018-07-23 19:18:10 +01:00
sysfs-bus-iio-light-isl29018
sysfs-bus-iio-light-lm3533-als
sysfs-bus-iio-light-si1133 iio: light: introduce si1133 2018-07-23 19:18:11 +01:00
sysfs-bus-iio-light-tsl2583
sysfs-bus-iio-lptimer-stm32
sysfs-bus-iio-magnetometer-hmc5843
sysfs-bus-iio-meas-spec
sysfs-bus-iio-mpu6050
sysfs-bus-iio-potentiometer-mcp4531
sysfs-bus-iio-proximity-as3935 iio: sysfs-bus-iio-*: update email contact 2018-02-17 12:39:46 +00:00
sysfs-bus-iio-sps30 iio: chemical: sps30: allow changing self cleaning period 2019-01-19 17:56:34 +00:00
sysfs-bus-iio-timer-stm32
sysfs-bus-iio-trigger-sysfs
sysfs-bus-iio-vf610
sysfs-bus-intel_th-devices-gth
sysfs-bus-intel_th-devices-msc
sysfs-bus-intel_th-devices-pti
sysfs-bus-intel_th-output-devices intel_th: Update ABI documentation 2019-02-21 15:01:06 +02:00
sysfs-bus-mcb
sysfs-bus-mdio
sysfs-bus-media
sysfs-bus-mei
sysfs-bus-mmc
sysfs-bus-nfit acpi, nfit: Remove ecc_unit_size 2018-06-03 12:49:15 -07:00
sysfs-bus-pci PCI/P2PDMA: Add sysfs group to display p2pmem stats 2018-10-17 12:18:15 -05:00
sysfs-bus-pci-devices-aer_stats PCI/AER: Add sysfs attributes for rootport cumulative stats 2018-07-19 16:19:52 -05:00
sysfs-bus-pci-devices-cciss
sysfs-bus-pci-drivers-ehci_hcd
sysfs-bus-pci-drivers-janz-cmodio
sysfs-bus-pci-drivers-xhci_hcd usb: xhci: Add DbC support in xHCI driver 2017-12-08 17:43:52 +01:00
sysfs-bus-platform
sysfs-bus-rapidio Documentation: rapidio: move sysfs interface to ABI 2018-02-23 08:25:45 -07:00
sysfs-bus-rbd block: rbd: update sysfs interface 2018-03-21 09:20:40 -06:00
sysfs-bus-rpmsg rpmsg: Add driver_override device attribute for rpmsg_device 2018-04-25 16:59:53 -07:00
sysfs-bus-siox siox: new driver framework for eckelmann SIOX 2017-12-19 09:26:00 +01:00
sysfs-bus-thunderbolt thunderbolt: Export IOMMU based DMA protection support to userspace 2018-12-05 12:01:56 +03:00
sysfs-bus-typec usb: typec: Bus type for alternate modes 2018-07-02 17:42:36 +02:00
sysfs-bus-umc
sysfs-bus-usb usb: Change "wired" to "hardwired" for connect_type 2019-02-04 12:58:03 +01:00
sysfs-bus-usb-devices-usbsevseg
sysfs-bus-usb-lvstest
sysfs-bus-vfio-mdev
sysfs-bus-vmbus vmbus: add driver_override support 2018-09-12 09:46:46 +02:00
sysfs-c2port
sysfs-cfq-target-latency
sysfs-class
sysfs-class-backlight-adp5520 backlight: adp5520: document sysfs attributes 2018-02-23 08:21:13 -07:00
sysfs-class-backlight-adp8860 backlight: adp8860: document sysfs attributes 2018-02-23 08:21:48 -07:00
sysfs-class-backlight-driver-adp8870
sysfs-class-backlight-driver-lm3533
sysfs-class-backlight-lm3639 backlight: lm3639: document sysfs attributes 2018-02-23 08:20:57 -07:00
sysfs-class-bdi
sysfs-class-bsr char/bsr: add sysfs interface documentation 2018-03-21 09:26:07 -06:00
sysfs-class-chromeos mfd / platform: cros_ec: Move device sysfs attributes to its own driver 2019-02-01 08:09:27 +00:00
sysfs-class-chromeos-driver-cros-ec-lightbar mfd / platform: cros_ec: Move lightbar attributes to its own driver 2019-02-01 08:09:27 +00:00
sysfs-class-chromeos-driver-cros-ec-vbc mfd / platform: cros_ec: Move vbc attributes to its own driver 2019-02-01 08:09:27 +00:00
sysfs-class-cxl Merge branch 'fixes' into next 2018-06-03 20:32:02 +10:00
sysfs-class-devfreq
sysfs-class-devfreq-event
sysfs-class-extcon
sysfs-class-fpga-bridge
sysfs-class-fpga-manager fpga: mgr: add status for fpga-manager 2018-07-15 13:55:44 +02:00
sysfs-class-fpga-region fpga: region: add compat_id support 2018-07-15 13:55:44 +02:00
sysfs-class-gnss gnss: add receiver type support 2018-06-28 20:32:51 +09:00
sysfs-class-iommu
sysfs-class-iommu-amd-iommu
sysfs-class-iommu-intel-iommu
sysfs-class-lcd
sysfs-class-led
sysfs-class-led-driver-lm3533
sysfs-class-led-driver-sc27xx leds: sc27xx: Add pattern_set/clear interfaces for LED controller 2018-10-11 21:59:11 +02:00
sysfs-class-led-flash
sysfs-class-led-trigger-netdev leds: trigger: Introduce a NETDEV trigger 2018-01-08 21:28:11 +01:00
sysfs-class-led-trigger-oneshot
sysfs-class-led-trigger-pattern dt-bindings: leds: Add pattern initialization from Device Tree 2019-01-16 22:06:51 +01:00
sysfs-class-led-trigger-usbport
sysfs-class-leds-gt683r
sysfs-class-mei mei: expose fw version to sysfs 2018-07-03 13:11:20 +02:00
sysfs-class-mic.txt
sysfs-class-mtd mtd: Add sysfs attribute for mtd OOB available size 2018-04-22 20:07:06 +02:00
sysfs-class-mux
sysfs-class-net First merge window pull request 2018-10-26 07:38:19 -07:00
sysfs-class-net-batman-adv
sysfs-class-net-cdc_ncm
sysfs-class-net-dsa net: dsa: Fix tagging attribute location 2018-11-30 17:17:39 -08:00
sysfs-class-net-grcan
sysfs-class-net-janz-ican3
sysfs-class-net-mesh
sysfs-class-net-phydev
sysfs-class-net-qmi
sysfs-class-net-queues Documentation: Add explanation for XPS using Rx-queue(s) map 2018-07-02 09:06:24 +09:00
sysfs-class-net-statistics
sysfs-class-ocxl ocxl: Documentation 2018-01-27 20:02:24 +11:00
sysfs-class-pktcdvd Documentation/ABI: clean up sysfs-class-pktcdvd 2018-02-23 08:11:34 -07:00
sysfs-class-power power: supply: Add 'usb_type' property and supporting code 2018-04-25 14:17:48 +02:00
sysfs-class-power-twl4030
sysfs-class-powercap
sysfs-class-pwm
sysfs-class-rapidio Documentation: rapidio: move sysfs interface to ABI 2018-02-23 08:25:45 -07:00
sysfs-class-rc media: update/fix my e-mail on some places 2018-05-10 07:27:15 -04:00
sysfs-class-rc-nuvoton media: update/fix my e-mail on some places 2018-05-10 07:27:15 -04:00
sysfs-class-regulator
sysfs-class-remoteproc
sysfs-class-rtc rtc: Add RTC range 2018-03-17 14:20:54 +01:00
sysfs-class-rtc-rtc0-device-rtc_calibration
sysfs-class-scsi_host libata: update documentation for sysfs interfaces 2018-02-13 06:41:02 -08:00
sysfs-class-scsi_tape
sysfs-class-stm
sysfs-class-stm_source
sysfs-class-switchtec
sysfs-class-typec usb: typec: Bus type for alternate modes 2018-07-02 17:42:36 +02:00
sysfs-class-usb_role usb: common: Small class for USB role switches 2018-03-22 13:40:10 +01:00
sysfs-class-uwb_rc
sysfs-class-uwb_rc-wusbhc
sysfs-class-watchdog watchdog: Update sysfs documentation. 2019-03-02 15:28:19 +01:00
sysfs-class-zram
sysfs-dev
sysfs-devices
sysfs-devices-coredump sysfs: add attribute specification for /sysfs/devices/.../coredump 2018-01-23 09:47:05 +01:00
sysfs-devices-edac media: update/fix my e-mail on some places 2018-05-10 07:27:15 -04:00
sysfs-devices-firmware_node
sysfs-devices-lpss_ltr
sysfs-devices-memory
sysfs-devices-mmc
sysfs-devices-online
sysfs-devices-platform-_UDC_-gadget
sysfs-devices-platform-ACPI-TAD ACPI: Add Time and Alarm Device (TAD) driver 2018-03-20 10:36:04 +01:00
sysfs-devices-platform-docg3
sysfs-devices-platform-dock ACPI: dock: document sysfs interface 2018-02-12 11:24:55 +01:00
sysfs-devices-platform-ipmi char/ipmi: add documentation for sysfs interface 2018-02-26 09:43:20 -06:00
sysfs-devices-platform-sh_mobile_lcdc_fb
sysfs-devices-platform-trackpoint Input: trackpoint: document sysfs interface 2018-03-21 09:35:01 -06:00
sysfs-devices-power PM / QoS: Fix device resume latency framework 2017-11-08 12:14:51 +01:00
sysfs-devices-power_resources_D0
sysfs-devices-power_resources_D1
sysfs-devices-power_resources_D2
sysfs-devices-power_resources_D3hot
sysfs-devices-power_resources_wakeup
sysfs-devices-power_state
sysfs-devices-real_power_state
sysfs-devices-resource_in_use
sysfs-devices-soc
sysfs-devices-software_node drivers: base: Introducing software nodes to the firmware node framework 2018-11-26 18:19:11 +01:00
sysfs-devices-sun
sysfs-devices-system-cpu cpuidle: Add 'above' and 'below' idle state metrics 2018-12-12 23:22:18 +01:00
sysfs-devices-system-ibm-rtl
sysfs-devices-system-xen_cpu
sysfs-driver-altera-cvp
sysfs-driver-bd9571mwv-regulator regulator: bd9571mwv: Document "backup_mode" sysfs file 2018-07-18 13:10:15 +01:00
sysfs-driver-fsi-master-gpio fsi: master-gpio: Add external mode 2018-03-14 19:11:00 +01:00
sysfs-driver-genwqe
sysfs-driver-habanalabs habanalabs: add sysfs and hwmon support 2019-02-18 09:46:45 +01:00
sysfs-driver-hid
sysfs-driver-hid-corsair
sysfs-driver-hid-lenovo
sysfs-driver-hid-logitech-hidpp HID: logitech-hidpp: document sysfs interface 2018-03-06 15:17:55 +01:00
sysfs-driver-hid-logitech-lg4ff
sysfs-driver-hid-multitouch
sysfs-driver-hid-ntrig HID: ntrig: document sysfs interface 2018-03-07 15:45:50 +01:00
sysfs-driver-hid-picolcd
sysfs-driver-hid-prodikeys
sysfs-driver-hid-roccat-kone
sysfs-driver-hid-srws1
sysfs-driver-hid-wiimote
sysfs-driver-input-axp-pek
sysfs-driver-intel-rapid-start
sysfs-driver-pciback
sysfs-driver-ppi
sysfs-driver-samsung-laptop platform/x86: samsung-laptop: Grammar s/are can/can/ 2017-12-21 14:56:27 +02:00
sysfs-driver-st
sysfs-driver-tegra-fuse
sysfs-driver-toshiba_acpi
sysfs-driver-toshiba_haps
sysfs-driver-typec-displayport usb: typec: Add driver for DisplayPort alternate mode 2018-07-02 17:42:36 +02:00
sysfs-driver-ufs scsi: ufs: Add support for Auto-Hibernate Idle Timer 2018-03-21 21:21:25 -04:00
sysfs-driver-w1_ds28e17
sysfs-driver-wacom
sysfs-driver-xen-blkback xen/blkback: don't keep persistent grants too long 2018-08-27 12:12:03 -04:00
sysfs-driver-xen-blkfront
sysfs-firmware-acpi
sysfs-firmware-dmi-entries
sysfs-firmware-dmi-tables
sysfs-firmware-efi
sysfs-firmware-efi-esrt
sysfs-firmware-efi-runtime-map
sysfs-firmware-gsmi
sysfs-firmware-log
sysfs-firmware-memmap
sysfs-firmware-ofw
sysfs-firmware-opal-powercap
sysfs-firmware-opal-psr
sysfs-firmware-qemu_fw_cfg
sysfs-firmware-sfi
sysfs-firmware-sgi_uv
sysfs-fs-ext4 ext4: add sysfs attr /sys/fs/ext4/<disk>/journal_task 2019-02-21 11:49:27 -05:00
sysfs-fs-f2fs f2fs: run discard jobs when put_super 2019-02-04 08:55:34 -08:00
sysfs-fs-nilfs2
sysfs-fs-xfs
sysfs-hypervisor-xen
sysfs-ibft
sysfs-kernel-boot_params
sysfs-kernel-fscaps
sysfs-kernel-iommu_groups
sysfs-kernel-irq genirq: Add wakeup sysfs node to show IRQ wakeup state 2018-02-28 18:07:20 +01:00
sysfs-kernel-livepatch livepatch: Remove signal sysfs attribute 2019-01-16 22:09:33 +01:00
sysfs-kernel-mm
sysfs-kernel-mm-hugepages docs/admin-guide/mm: start moving here files from Documentation/vm 2018-04-27 17:02:48 -06:00
sysfs-kernel-mm-ksm docs/vm: rename documentation files to .rst 2018-04-16 14:18:15 -06:00
sysfs-kernel-mm-swap
sysfs-kernel-slab docs/vm: rename documentation files to .rst 2018-04-16 14:18:15 -06:00
sysfs-kernel-uids
sysfs-kernel-vmcoreinfo
sysfs-memory-page-offline
sysfs-module
sysfs-ocfs2
sysfs-platform-asus-laptop
sysfs-platform-asus-wmi
sysfs-platform-at91
sysfs-platform-brcmstb-gisb-arb
sysfs-platform-chipidea-usb2
sysfs-platform-chipidea-usb-otg
sysfs-platform-dell-laptop
sysfs-platform-dell-smbios
sysfs-platform-dfl-fme fpga: dfl: fme: add header sub feature support 2018-07-15 13:55:46 +02:00
sysfs-platform-dfl-port fpga: dfl: afu: add afu sub feature support 2018-07-15 13:55:47 +02:00
sysfs-platform-dptf ACPI / DPTF: Document dptf_power sysfs atttributes 2018-02-12 11:22:47 +01:00
sysfs-platform-eeepc-laptop
sysfs-platform-hidma
sysfs-platform-hidma-mgmt
sysfs-platform-i2c-demux-pinctrl
sysfs-platform-ideapad-laptop platform/x86: ideapad-laptop: Add fn-lock setting 2018-05-22 12:24:12 +03:00
sysfs-platform-intel-wmi-thunderbolt
sysfs-platform-kim
sysfs-platform-lg-laptop platform/x86: Add LG Gram laptop special features driver 2018-10-19 19:21:57 +03:00
sysfs-platform-msi-laptop
sysfs-platform-phy-rcar-gen3-usb2
sysfs-platform-renesas_usb3
sysfs-platform-sst-atom
sysfs-platform-tahvo-usb
sysfs-platform-ts5500
sysfs-platform-twl4030-usb
sysfs-platform-usbip-vudc
sysfs-power PM / hibernate: Documentation: fix image_size default value 2018-09-10 12:07:06 +02:00
sysfs-pps
sysfs-profiling
sysfs-ptp
sysfs-tty
sysfs-uevent
sysfs-wusb_cbaf