| Message ID | 1606084748-4097-1-git-send-email-jeff@labundy.com |
|---|---|
| Headers | show |
| Series | Add support for Azoteq IQS626A | expand |
Hi Rob, On Sun, Nov 22, 2020 at 04:39:07PM -0600, Jeff LaBundy wrote: > This patch adds device tree bindings for the Azoteq IQS626A > capacitive touch controller. > > Signed-off-by: Jeff LaBundy <jeff@labundy.com> > --- Just wanted to check in and see if you were OK with this binding. > .../devicetree/bindings/input/iqs626a.yaml | 840 +++++++++++++++++++++ > 1 file changed, 840 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/iqs626a.yaml > > diff --git a/Documentation/devicetree/bindings/input/iqs626a.yaml b/Documentation/devicetree/bindings/input/iqs626a.yaml > new file mode 100644 > index 0000000..af2f88b > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/iqs626a.yaml > @@ -0,0 +1,840 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/input/iqs626a.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Azoteq IQS626A Capacitive Touch Controller > + > +maintainers: > + - Jeff LaBundy <jeff@labundy.com> > + > +description: | > + The Azoteq IQS626A is a 14-channel capacitive touch controller that features > + additional Hall-effect and inductive sensing capabilities. > + > + Link to datasheet: https://www.azoteq.com/ > + > +properties: > + compatible: > + const: azoteq,iqs626a > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + azoteq,suspend-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the power mode during suspend as follows: > + 0: Automatic (same as normal runtime, i.e. suspend/resume disabled) > + 1: Low power (all sensing at a reduced reporting rate) > + 2: Ultra-low power (ULP channel proximity sensing) > + 3: Halt (no sensing) > + > + azoteq,clk-div: > + type: boolean > + description: Divides the device's core clock by a factor of 4. > + > + azoteq,ulp-enable: > + type: boolean > + description: > + Permits the device to automatically enter ultra-low-power mode from low- > + power mode. > + > + azoteq,ulp-update: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3, 4, 5, 6, 7] > + default: 3 > + description: | > + Specifies the rate at which the trackpad, generic and Hall channels are > + updated during ultra-low-power mode as follows: > + 0: 8 > + 1: 13 > + 2: 28 > + 3: 54 > + 4: 89 > + 5: 135 > + 6: 190 > + 7: 256 > + > + azoteq,ati-band-disable: > + type: boolean > + description: Disables the ATI band check. > + > + azoteq,ati-lp-only: > + type: boolean > + description: Limits automatic ATI to low-power mode. > + > + azoteq,gpio3-select: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3, 4, 5, 6, 7] > + default: 1 > + description: | > + Selects the channel or group of channels for which the GPIO3 pin > + represents touch state as follows: > + 0: None > + 1: ULP channel > + 2: Trackpad > + 3: Trackpad > + 4: Generic channel 0 > + 5: Generic channel 1 > + 6: Generic channel 2 > + 7: Hall channel > + > + azoteq,reseed-select: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the event(s) that prompt the device to reseed (i.e. reset the > + long-term average) of an associated channel as follows: > + 0: None > + 1: Proximity > + 2: Proximity or touch > + 3: Proximity, touch or deep touch > + > + azoteq,thresh-extend: > + type: boolean > + description: Multiplies all touch and deep-touch thresholds by 4. > + > + azoteq,tracking-enable: > + type: boolean > + description: > + Enables all associated channels to track their respective reference > + channels. > + > + azoteq,reseed-offset: > + type: boolean > + description: > + Applies an 8-count offset to all long-term averages upon either ATI or > + reseed events. > + > + azoteq,rate-np-ms: > + minimum: 0 > + maximum: 255 > + default: 150 > + description: Specifies the report rate (in ms) during normal-power mode. > + > + azoteq,rate-lp-ms: > + minimum: 0 > + maximum: 255 > + default: 150 > + description: Specifies the report rate (in ms) during low-power mode. > + > + azoteq,rate-ulp-ms: > + multipleOf: 16 > + minimum: 0 > + maximum: 4080 > + default: 0 > + description: Specifies the report rate (in ms) during ultra-low-power mode. > + > + azoteq,timeout-pwr-ms: > + multipleOf: 512 > + minimum: 0 > + maximum: 130560 > + default: 2560 > + description: > + Specifies the length of time (in ms) to wait for an event before moving > + from normal-power mode to low-power mode, or (if 'azoteq,ulp-enable' is > + present) from low-power mode to ultra-low-power mode. > + > + azoteq,timeout-lta-ms: > + multipleOf: 512 > + minimum: 0 > + maximum: 130560 > + default: 40960 > + description: > + Specifies the length of time (in ms) to wait before resetting the long- > + term average of all channels. Specify the maximum timeout to disable it > + altogether. > + > + touchscreen-inverted-x: true > + touchscreen-inverted-y: true > + touchscreen-swapped-x-y: true > + > +patternProperties: > + "^ulp-0|generic-[0-2]|hall$": > + type: object > + description: > + Represents a single sensing channel. A channel is active if defined and > + inactive otherwise. > + > + properties: > + azoteq,ati-exclude: > + type: boolean > + description: > + Prevents the channel from participating in an ATI event that is > + manually triggered during initialization. > + > + azoteq,reseed-disable: > + type: boolean > + description: > + Prevents the channel from being reseeded if the long-term average > + timeout (defined in 'azoteq,timeout-lta') expires. > + > + azoteq,meas-cap-decrease: > + type: boolean > + description: > + Decreases the internal measurement capacitance from 60 pF to 15 pF. > + > + azoteq,rx-inactive: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2] > + default: 0 > + description: | > + Specifies how inactive CRX pins are to be terminated as follows: > + 0: VSS > + 1: Floating > + 2: VREG (generic channels only) > + > + azoteq,linearize: > + type: boolean > + description: > + Enables linearization of the channel's counts (generic and Hall > + channels) or inverts the polarity of the channel's proximity or > + touch states (ULP channel). > + > + azoteq,dual-direction: > + type: boolean > + description: > + Specifies that the channel's long-term average is to freeze in the > + presence of either increasing or decreasing counts, thereby permit- > + ting events to be reported in either direction. > + > + azoteq,filt-disable: > + type: boolean > + description: Disables raw count filtering for the channel. > + > + azoteq,ati-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + description: | > + Specifies the channel's ATI mode as follows: > + 0: Disabled > + 1: Semi-partial > + 2: Partial > + 3: Full > + > + The default value is a function of the channel and the device's reset > + user interface (RUI); reference the datasheet for further information > + about the available RUI options. > + > + azoteq,ati-base: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [75, 100, 150, 200] > + description: > + Specifies the channel's ATI base. The default value is a function > + of the channel and the device's RUI. > + > + azoteq,ati-target: > + $ref: /schemas/types.yaml#/definitions/uint32 > + multipleOf: 32 > + minimum: 0 > + maximum: 2016 > + description: > + Specifies the channel's ATI target. The default value is a function > + of the channel and the device's RUI. > + > + azoteq,cct-increase: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 16 > + default: 0 > + description: > + Specifies the degree to which the channel's charge cycle time is to > + be increased, with 0 representing no increase. The maximum value is > + limited to 4 in the case of the ULP channel, and the property is un- > + available entirely in the case of the Hall channel. > + > + azoteq,proj-bias: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the bias current applied during projected-capacitance > + sensing as follows: > + 0: 2.5 uA > + 1: 5 uA > + 2: 10 uA > + 3: 20 uA > + > + This property is unavailable in the case of the Hall channel. > + > + azoteq,sense-freq: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + description: | > + Specifies the channel's sensing frequency as follows (parenthesized > + numbers represent the frequency if 'azoteq,clk-div' is present): > + 0: 4 MHz (1 MHz) > + 1: 2 MHz (500 kHz) > + 2: 1 MHz (250 kHz) > + 3: 500 kHz (125 kHz) > + > + This property is unavailable in the case of the Hall channel. The > + default value is a function of the channel and the device's RUI. > + > + azoteq,ati-band-tighten: > + type: boolean > + description: > + Tightens the ATI band from 1/8 to 1/16 of the desired target (ULP and > + generic channels only). > + > + azoteq,proj-enable: > + type: boolean > + description: Enables projected-capacitance sensing (ULP channel only). > + > + azoteq,filt-str-np-cnt: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: > + Specifies the raw count filter strength during normal-power mode (ULP > + and generic channels only). > + > + azoteq,filt-str-lp-cnt: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: > + Specifies the raw count filter strength during low-power mode (ULP and > + generic channels only). > + > + azoteq,filt-str-np-lta: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: > + Specifies the long-term average filter strength during normal-power > + mode (ULP and generic channels only). > + > + azoteq,filt-str-lp-lta: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: > + Specifies the long-term average filter strength during low-power mode > + (ULP and generic channels only). > + > + azoteq,rx-enable: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + minItems: 1 > + maxItems: 8 > + items: > + minimum: 0 > + maximum: 7 > + description: > + Specifies the CRX pin(s) associated with the channel. > + > + This property is unavailable in the case of the Hall channel. The > + default value is a function of the channel and the device's RUI. > + > + azoteq,tx-enable: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + minItems: 1 > + maxItems: 8 > + items: > + minimum: 0 > + maximum: 7 > + description: > + Specifies the TX pin(s) associated with the channel. > + > + This property is unavailable in the case of the Hall channel. The > + default value is a function of the channel and the device's RUI. > + > + azoteq,local-cap-size: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3, 4] > + default: 0 > + description: | > + Specifies the capacitance to be added to the channel as follows: > + 0: 0 pF > + 1: 0.5 pF > + 2: 1.0 pF > + 3: 1.5 pF > + 4: 2.0 pF > + > + This property is unavailable in the case of the ULP or Hall channels. > + > + azoteq,sense-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 8, 9, 12, 14, 15] > + description: | > + Specifies the channel's sensing mode as follows: > + 0: Self capacitance > + 1: Projected capacitance > + 8: Self inductance > + 9: Mutual inductance > + 12: External > + 14: Hall effect > + 15: Temperature > + > + This property is unavailable in the case of the ULP or Hall channels. > + The default value is a function of the channel and the device's RUI. > + > + azoteq,tx-freq: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the inductive sensing excitation frequency as follows > + (parenthesized numbers represent the frequency if 'azoteq,clk-div' > + is present): > + 0: 16 MHz (4 MHz) > + 1: 8 MHz (2 MHz) > + 2: 4 MHz (1 MHz) > + 3: 2 MHz (500 kHz) > + > + This property is unavailable in the case of the ULP or Hall channels. > + > + azoteq,invert-enable: > + type: boolean > + description: > + Inverts the polarity of the states reported for proximity, touch and > + deep-touch events relative to their respective thresholds (generic > + channels only). > + > + azoteq,comp-disable: > + type: boolean > + description: > + Disables compensation for the channel (generic channels only). > + > + azoteq,static-enable: > + type: boolean > + description: > + Enables the static front-end for the channel (generic channels only). > + > + azoteq,assoc-select: > + $ref: /schemas/types.yaml#/definitions/string-array > + minItems: 1 > + maxItems: 6 > + items: > + enum: > + - ulp-0 > + - trackpad-3x2 > + - trackpad-3x3 > + - generic-0 > + - generic-1 > + - generic-2 > + - hall > + description: > + Specifies the associated channels for which the channel serves as a > + reference channel. By default, no channels are selected. This prop- > + erty is only available for the generic channels. > + > + azoteq,assoc-weight: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 255 > + default: 0 > + description: > + Specifies the channel's impact weight if it acts as an associated > + channel (0 = 0% impact, 255 = 200% impact). This property is only > + available for the generic channels. > + > + patternProperties: > + "^event-(prox|touch|deep)(-alt)?$": > + type: object > + description: > + Represents a proximity, touch or deep-touch event reported by the > + channel in response to a decrease in counts. Node names suffixed with > + '-alt' instead correspond to an increase in counts. > + > + By default, the long-term average tracks an increase in counts such > + that only events corresponding to a decrease in counts are reported > + (refer to the datasheet for more information). > + > + Specify 'azoteq,dual-direction' to freeze the long-term average when > + the counts increase or decrease such that events of either direction > + can be reported. Alternatively, specify 'azoteq,invert-enable' to in- > + vert the polarity of the states reported by the channel. > + > + Complementary events (e.g. event-touch and event-touch-alt) can both > + be present and specify different key or switch codes, but not differ- > + ent thresholds or hysteresis (if applicable). > + > + Proximity events are unavailable in the case of the Hall channel, and > + deep-touch events are only available for the generic channels. Unless > + otherwise specified, default values are a function of the channel and > + the device's RUI. > + > + properties: > + azoteq,thresh: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 255 > + description: Specifies the threshold for the event. > + > + azoteq,hyst: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 15 > + description: > + Specifies the hysteresis for the event (touch and deep-touch > + events only). > + > + linux,code: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Numeric key or switch code associated with the event. > + > + linux,input-type: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [1, 5] > + description: > + Specifies whether the event is to be interpreted as a key (1) or > + a switch (5). By default, Hall-channel events are interpreted as > + switches and all others are interpreted as keys. > + > + dependencies: > + linux,input-type: ["linux,code"] > + > + additionalProperties: false > + > + dependencies: > + azoteq,assoc-weight: ["azoteq,assoc-select"] > + > + additionalProperties: false > + > + "^trackpad-3x[2-3]$": > + type: object > + description: > + Represents all channels associated with the trackpad. The channels are > + collectively active if the trackpad is defined and inactive otherwise. > + > + properties: > + azoteq,ati-exclude: > + type: boolean > + description: > + Prevents the trackpad channels from participating in an ATI event > + that is manually triggered during initialization. > + > + azoteq,reseed-disable: > + type: boolean > + description: > + Prevents the trackpad channels from being reseeded if the long-term > + average timeout (defined in 'azoteq,timeout-lta') expires. > + > + azoteq,meas-cap-decrease: > + type: boolean > + description: > + Decreases the internal measurement capacitance from 60 pF to 15 pF. > + > + azoteq,rx-inactive: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1] > + default: 0 > + description: | > + Specifies how inactive CRX pins are to be terminated as follows: > + 0: VSS > + 1: Floating > + > + azoteq,linearize: > + type: boolean > + description: Inverts the polarity of the trackpad's touch state. > + > + azoteq,dual-direction: > + type: boolean > + description: > + Specifies that the trackpad's long-term averages are to freeze in > + the presence of either increasing or decreasing counts, thereby > + permitting events to be reported in either direction. > + > + azoteq,filt-disable: > + type: boolean > + description: Disables raw count filtering for the trackpad channels. > + > + azoteq,ati-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the trackpad's ATI mode as follows: > + 0: Disabled > + 1: Semi-partial > + 2: Partial > + 3: Full > + > + azoteq,ati-base: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + minItems: 6 > + maxItems: 9 > + items: > + minimum: 45 > + maximum: 300 > + default: [45, 45, 45, 45, 45, 45, 45, 45, 45] > + description: Specifies each individual trackpad channel's ATI base. > + > + azoteq,ati-target: > + $ref: /schemas/types.yaml#/definitions/uint32 > + multipleOf: 32 > + minimum: 0 > + maximum: 2016 > + default: 0 > + description: Specifies the trackpad's ATI target. > + > + azoteq,cct-increase: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 4 > + default: 0 > + description: > + Specifies the degree to which the trackpad's charge cycle time is to > + be increased, with 0 representing no increase. > + > + azoteq,proj-bias: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the bias current applied during projected-capacitance > + sensing as follows: > + 0: 2.5 uA > + 1: 5 uA > + 2: 10 uA > + 3: 20 uA > + > + azoteq,sense-freq: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: | > + Specifies the trackpad's sensing frequency as follows (parenthesized > + numbers represent the frequency if 'azoteq,clk-div' is present): > + 0: 4 MHz (1 MHz) > + 1: 2 MHz (500 kHz) > + 2: 1 MHz (250 kHz) > + 3: 500 kHz (125 kHz) > + > + azoteq,ati-band-tighten: > + type: boolean > + description: > + Tightens the ATI band from 1/8 to 1/16 of the desired target. > + > + azoteq,thresh: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + minItems: 6 > + maxItems: 9 > + items: > + minimum: 0 > + maximum: 255 > + default: [0, 0, 0, 0, 0, 0, 0, 0, 0] > + description: > + Specifies each individual trackpad channel's touch threshold. > + > + azoteq,hyst: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 15 > + default: 0 > + description: Specifies the trackpad's touch hysteresis. > + > + azoteq,lta-update: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3, 4, 5, 6, 7] > + default: 0 > + description: | > + Specifies the update rate of the trackpad's long-term average during > + ultra-low-power mode as follows: > + 0: 2 > + 1: 4 > + 2: 8 > + 3: 16 > + 4: 32 > + 5: 64 > + 6: 128 > + 7: 255 > + > + azoteq,filt-str-trackpad: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: Specifies the trackpad coordinate filter strength. > + > + azoteq,filt-str-np-cnt: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: > + Specifies the raw count filter strength during normal-power mode. > + > + azoteq,filt-str-lp-cnt: > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + default: 0 > + description: > + Specifies the raw count filter strength during low-power mode. > + > + linux,keycodes: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + minItems: 1 > + maxItems: 6 > + description: | > + Specifies the numeric keycodes associated with each available gesture > + in the following order (enter 0 for unused gestures): > + 0: Positive flick or swipe in X direction > + 1: Negative flick or swipe in X direction > + 2: Positive flick or swipe in Y direction > + 3: Negative flick or swipe in Y direction > + 4: Tap > + 5: Hold > + > + azoteq,gesture-swipe: > + type: boolean > + description: > + Directs the device to interpret axial gestures as a swipe (finger > + remains on trackpad) instead of a flick (finger leaves trackpad). > + > + azoteq,timeout-tap-ms: > + multipleOf: 16 > + minimum: 0 > + maximum: 4080 > + default: 0 > + description: > + Specifies the length of time (in ms) within which a trackpad touch > + must be released in order to be interpreted as a tap. > + > + azoteq,timeout-swipe-ms: > + multipleOf: 16 > + minimum: 0 > + maximum: 4080 > + default: 0 > + description: > + Specifies the length of time (in ms) within which an axial gesture > + must be completed in order to be interpreted as a flick or swipe. > + > + azoteq,thresh-swipe: > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 255 > + default: 0 > + description: > + Specifies the number of points across which an axial gesture must > + travel in order to be interpreted as a flick or swipe. > + > + dependencies: > + azoteq,gesture-swipe: ["linux,keycodes"] > + azoteq,timeout-tap-ms: ["linux,keycodes"] > + azoteq,timeout-swipe-ms: ["linux,keycodes"] > + azoteq,thresh-swipe: ["linux,keycodes"] > + > + additionalProperties: false > + > +required: > + - compatible > + - reg > + - interrupts > + - "#address-cells" > + - "#size-cells" > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/input/input.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + > + iqs626a@44 { > + #address-cells = <1>; > + #size-cells = <0>; > + > + compatible = "azoteq,iqs626a"; > + reg = <0x44>; > + interrupt-parent = <&gpio>; > + interrupts = <17 IRQ_TYPE_LEVEL_LOW>; > + > + azoteq,rate-np-ms = <16>; > + azoteq,rate-lp-ms = <160>; > + > + azoteq,timeout-pwr-ms = <2560>; > + azoteq,timeout-lta-ms = <32768>; > + > + ulp-0 { > + azoteq,meas-cap-decrease; > + > + azoteq,ati-base = <75>; > + azoteq,ati-target = <1024>; > + > + azoteq,rx-enable = <2>, <3>, <4>, > + <5>, <6>, <7>; > + > + event-prox { > + linux,code = <KEY_POWER>; > + }; > + }; > + > + trackpad-3x3 { > + azoteq,filt-str-np-cnt = <1>; > + azoteq,filt-str-lp-cnt = <1>; > + > + azoteq,hyst = <4>; > + azoteq,thresh = <35>, <40>, <40>, > + <38>, <33>, <38>, > + <35>, <35>, <35>; > + > + azoteq,ati-mode = <3>; > + azoteq,ati-base = <195>, <195>, <195>, > + <195>, <195>, <195>, > + <195>, <195>, <195>; > + azoteq,ati-target = <512>; > + > + azoteq,proj-bias = <1>; > + azoteq,sense-freq = <2>; > + > + linux,keycodes = <KEY_VOLUMEUP>, > + <KEY_VOLUMEDOWN>, > + <KEY_NEXTSONG>, > + <KEY_PREVIOUSSONG>, > + <KEY_PLAYPAUSE>, > + <KEY_STOPCD>; > + > + azoteq,gesture-swipe; > + azoteq,timeout-swipe-ms = <800>; > + azoteq,timeout-tap-ms = <400>; > + azoteq,thresh-swipe = <40>; > + }; > + > + /* > + * Preserve the default register settings for > + * the temperature-tracking channel leveraged > + * by reset user interface (RUI) 1. > + * > + * Scalar properties (e.g. ATI mode) are left > + * untouched by simply omitting them; boolean > + * properties must be specified explicitly as > + * needed. > + */ > + generic-2 { > + azoteq,reseed-disable; > + azoteq,meas-cap-decrease; > + azoteq,dual-direction; > + azoteq,comp-disable; > + azoteq,static-enable; > + }; > + > + hall { > + azoteq,reseed-disable; > + azoteq,meas-cap-decrease; > + > + event-touch { > + linux,code = <SW_LID>; > + }; > + }; > + }; > + }; > + > +... > -- > 2.7.4 > Kind regards, Jeff LaBundy
This series introduces support for the Azoteq IQS626A capacitive touch controller, a highly flexible multifunction sensor targeting wearable applications. It is a close cousin to the IQS269A with the following key differences: - Channel count increases from 8 to 14. - Channels are assigned dedicated functions as follows: - ULP (ultra-low power): a single channel that continues to be sampled during the device's lowest-power sensing mode for wake-up signaling. - Trackpad: a group of 6 or 9 channels forming a capacitive trackpad with gesture support. - Generic: 3 independent channels capable of capacitive or inductive sensing, plus much more. - Hall: a single channel leveraging a pair of internal Hall-effect plates serving lid or dock detection. - Each channel (or group of channels) has a unique collection of configurable parameters rather than common parameters for every channel. Channels and events reported by the channels are configured using the device tree, similar to what was done for the IQS269A. A demo is shown in the following video: https://youtu.be/n0Q5BXYFIgI Jeff LaBundy (2): dt-bindings: input: Add bindings for Azoteq IQS626A input: Add support for Azoteq IQS626A .../devicetree/bindings/input/iqs626a.yaml | 840 +++++++++ drivers/input/misc/Kconfig | 11 + drivers/input/misc/Makefile | 1 + drivers/input/misc/iqs626a.c | 1846 ++++++++++++++++++++ 4 files changed, 2698 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/iqs626a.yaml create mode 100644 drivers/input/misc/iqs626a.c -- 2.7.4