Merge changes to ChromeOS EC Keyboard driver.
- items:
- const: allwinner,sun50i-a64-lradc
- const: allwinner,sun8i-a83t-r-lradc
+ - const: allwinner,sun50i-r329-lradc
+ - items:
+ - const: allwinner,sun20i-d1-lradc
+ - const: allwinner,sun50i-r329-lradc
reg:
maxItems: 1
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
interrupts:
maxItems: 1
- interrupts
- vref-supply
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - allwinner,sun50i-r329-lradc
+
+then:
+ required:
+ - clocks
+ - resets
+
additionalProperties: false
examples:
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/azoteq,iqs7222.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Azoteq IQS7222A/B/C Capacitive Touch Controller
+
+maintainers:
+ - Jeff LaBundy <jeff@labundy.com>
+
+description: |
+ The Azoteq IQS7222A, IQS7222B and IQS7222C are multichannel capacitive touch
+ controllers that feature additional sensing capabilities.
+
+ Link to datasheets: https://www.azoteq.com/
+
+properties:
+ compatible:
+ enum:
+ - azoteq,iqs7222a
+ - azoteq,iqs7222b
+ - azoteq,iqs7222c
+
+ reg:
+ maxItems: 1
+
+ irq-gpios:
+ maxItems: 1
+ description:
+ Specifies the GPIO connected to the device's active-low RDY output.
+
+ reset-gpios:
+ maxItems: 1
+ description:
+ Specifies the GPIO connected to the device's active-low MCLR input. The
+ device is temporarily held in hardware reset prior to initialization if
+ this property is present.
+
+ azoteq,rf-filt-enable:
+ type: boolean
+ description: Enables the device's internal RF filter.
+
+ azoteq,max-counts:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ Specifies the maximum number of conversion periods (counts) that can be
+ reported as follows:
+ 0: 1023
+ 1: 2047
+ 2: 4095
+ 3: 16384
+
+ azoteq,auto-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ Specifies the number of conversions to occur before an interrupt is
+ generated as follows:
+ 0: 4
+ 1: 8
+ 2: 16
+ 3: 32
+
+ azoteq,ati-frac-div-fine:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 31
+ description: Specifies the preloaded ATI fine fractional divider.
+
+ azoteq,ati-frac-div-coarse:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 31
+ description: Specifies the preloaded ATI coarse fractional divider.
+
+ azoteq,ati-comp-select:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 1023
+ description: Specifies the preloaded ATI compensation selection.
+
+ azoteq,lta-beta-lp:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description:
+ Specifies the long-term average filter damping factor to be applied during
+ low-power mode.
+
+ azoteq,lta-beta-np:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description:
+ Specifies the long-term average filter damping factor to be applied during
+ normal-power mode.
+
+ azoteq,counts-beta-lp:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description:
+ Specifies the counts filter damping factor to be applied during low-power
+ mode.
+
+ azoteq,counts-beta-np:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description:
+ Specifies the counts filter damping factor to be applied during normal-
+ power mode.
+
+ azoteq,lta-fast-beta-lp:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description:
+ Specifies the long-term average filter fast damping factor to be applied
+ during low-power mode.
+
+ azoteq,lta-fast-beta-np:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description:
+ Specifies the long-term average filter fast damping factor to be applied
+ during normal-power mode.
+
+ azoteq,timeout-ati-ms:
+ multipleOf: 500
+ minimum: 0
+ maximum: 32767500
+ description:
+ Specifies the delay (in ms) before ATI is retried following an ATI error.
+
+ azoteq,rate-ati-ms:
+ minimum: 0
+ maximum: 65535
+ description: Specifies the rate (in ms) at which ATI status is evaluated.
+
+ azoteq,timeout-np-ms:
+ minimum: 0
+ maximum: 65535
+ description:
+ Specifies the length of time (in ms) to wait for an event before moving
+ from normal-power mode to low-power mode.
+
+ azoteq,rate-np-ms:
+ minimum: 0
+ maximum: 3000
+ description: Specifies the report rate (in ms) during normal-power mode.
+
+ azoteq,timeout-lp-ms:
+ minimum: 0
+ maximum: 65535
+ description:
+ Specifies the length of time (in ms) to wait for an event before moving
+ from low-power mode to ultra-low-power mode.
+
+ azoteq,rate-lp-ms:
+ minimum: 0
+ maximum: 3000
+ description: Specifies the report rate (in ms) during low-power mode.
+
+ azoteq,timeout-ulp-ms:
+ minimum: 0
+ maximum: 65535
+ description:
+ Specifies the rate (in ms) at which channels not regularly sampled during
+ ultra-low-power mode are updated.
+
+ azoteq,rate-ulp-ms:
+ minimum: 0
+ maximum: 3000
+ description: Specifies the report rate (in ms) during ultra-low-power mode.
+
+patternProperties:
+ "^cycle-[0-9]$":
+ type: object
+ description: Represents a conversion cycle serving two sensing channels.
+
+ properties:
+ azoteq,conv-period:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 255
+ description: Specifies the cycle's conversion period.
+
+ azoteq,conv-frac:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 255
+ description: Specifies the cycle's conversion frequency fraction.
+
+ azoteq,tx-enable:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 9
+ items:
+ minimum: 0
+ maximum: 8
+ description: Specifies the CTx pin(s) associated with the cycle.
+
+ azoteq,rx-float-inactive:
+ type: boolean
+ description: Floats any inactive CRx pins instead of grounding them.
+
+ azoteq,dead-time-enable:
+ type: boolean
+ description:
+ Increases the denominator of the conversion frequency formula by one.
+
+ azoteq,tx-freq-fosc:
+ type: boolean
+ description:
+ Fixes the conversion frequency to that of the device's core clock.
+
+ azoteq,vbias-enable:
+ type: boolean
+ description: Enables the bias voltage for use during inductive sensing.
+
+ azoteq,sense-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ Specifies the cycle's sensing mode as follows:
+ 0: None
+ 1: Self capacitive
+ 2: Mutual capacitive
+ 3: Inductive
+
+ Note that in the case of IQS7222A, cycles 5 and 6 are restricted to
+ Hall-effect sensing.
+
+ azoteq,iref-enable:
+ type: boolean
+ description:
+ Enables the current reference for use during various sensing modes.
+
+ azoteq,iref-level:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description: Specifies the cycle's current reference level.
+
+ azoteq,iref-trim:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description: Specifies the cycle's current reference trim.
+
+ dependencies:
+ azoteq,iref-level: ["azoteq,iref-enable"]
+ azoteq,iref-trim: ["azoteq,iref-enable"]
+
+ additionalProperties: false
+
+ "^channel-([0-9]|1[0-9])$":
+ type: object
+ description:
+ Represents a single sensing channel. A channel is active if defined and
+ inactive otherwise.
+
+ Note that in the case of IQS7222A, channels 10 and 11 are restricted to
+ Hall-effect sensing with events reported on channel 10 only.
+
+ properties:
+ azoteq,ulp-allow:
+ type: boolean
+ description:
+ Permits the device to enter ultra-low-power mode while the channel
+ lies in a state of touch or proximity.
+
+ azoteq,ref-select:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 9
+ description: Specifies a separate reference channel to be followed.
+
+ azoteq,ref-weight:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 65535
+ description: Specifies the relative weight of the reference channel.
+
+ azoteq,use-prox:
+ type: boolean
+ description:
+ Activates the reference channel in response to proximity events
+ instead of touch events.
+
+ azoteq,ati-band:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ Specifies the channel's ATI band as a fraction of its ATI target as
+ follows:
+ 0: 1/16
+ 1: 1/8
+ 2: 1/4
+ 3: 1/2
+
+ azoteq,global-halt:
+ type: boolean
+ description:
+ Specifies that the channel's long-term average is to freeze if any
+ other participating channel lies in a proximity or touch state.
+
+ azoteq,invert-enable:
+ type: boolean
+ description:
+ Inverts the polarity of the states reported for proximity and touch
+ events relative to their respective thresholds.
+
+ 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,rx-enable:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 4
+ items:
+ minimum: 0
+ maximum: 7
+ description: Specifies the CRx pin(s) associated with the channel.
+
+ azoteq,samp-cap-double:
+ type: boolean
+ description: Doubles the sampling capacitance from 40 pF to 80 pF.
+
+ azoteq,vref-half:
+ type: boolean
+ description: Halves the discharge threshold from 1.0 V to 0.5 V.
+
+ azoteq,proj-bias:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ Specifies the bias current applied during mutual (projected)
+ capacitive sensing as follows:
+ 0: 2 uA
+ 1: 5 uA
+ 2: 7 uA
+ 3: 10 uA
+
+ azoteq,ati-target:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ multipleOf: 8
+ minimum: 0
+ maximum: 2040
+ description: Specifies the channel's ATI target.
+
+ azoteq,ati-base:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ multipleOf: 16
+ minimum: 0
+ maximum: 496
+ description: Specifies the channel's ATI base.
+
+ azoteq,ati-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3, 4, 5]
+ description: |
+ Specifies the channel's ATI mode as follows:
+ 0: Disabled
+ 1: Compensation
+ 2: Compensation divider
+ 3: Fine fractional divider
+ 4: Coarse fractional divider
+ 5: Full
+
+ azoteq,ati-frac-div-fine:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 31
+ description: Specifies the channel's ATI fine fractional divider.
+
+ azoteq,ati-frac-mult-coarse:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description: Specifies the channel's ATI coarse fractional multiplier.
+
+ azoteq,ati-frac-div-coarse:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 31
+ description: Specifies the channel's ATI coarse fractional divider.
+
+ azoteq,ati-comp-div:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 31
+ description: Specifies the channel's ATI compensation divider.
+
+ azoteq,ati-comp-select:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 1023
+ description: Specifies the channel's ATI compensation selection.
+
+ azoteq,debounce-enter:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description: Specifies the channel's debounce entrance factor.
+
+ azoteq,debounce-exit:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ description: Specifies the channel's debounce exit factor.
+
+ patternProperties:
+ "^event-(prox|touch)$":
+ type: object
+ description:
+ Represents a proximity or touch event reported by the channel.
+
+ properties:
+ azoteq,gpio-select:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 3
+ items:
+ minimum: 0
+ maximum: 2
+ description: |
+ Specifies one or more GPIO mapped to the event as follows:
+ 0: GPIO0
+ 1: GPIO3 (IQS7222C only)
+ 2: GPIO4 (IQS7222C only)
+
+ Note that although multiple events can be mapped to a single
+ GPIO, they must all be of the same type (proximity, touch or
+ slider gesture).
+
+ azoteq,thresh:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Specifies the threshold for the event. Valid entries range from
+ 0-127 and 0-255 for proximity and touch events, respectively.
+
+ azoteq,hyst:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 255
+ description:
+ Specifies the hysteresis for the event (touch events only).
+
+ azoteq,timeout-press-ms:
+ multipleOf: 500
+ minimum: 0
+ maximum: 127500
+ description:
+ Specifies the length of time (in ms) to wait before automatically
+ releasing a press event. Specify zero to allow the press state to
+ persist indefinitely.
+
+ The IQS7222B does not feature channel-specific timeouts; the time-
+ out specified for any one channel applies to all channels.
+
+ linux,code:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Numeric key or switch code associated with the event. Specify
+ KEY_RESERVED (0) to opt out of event reporting.
+
+ linux,input-type:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 5]
+ default: 1
+ description:
+ Specifies whether the event is to be interpreted as a key (1)
+ or a switch (5).
+
+ required:
+ - linux,code
+
+ additionalProperties: false
+
+ dependencies:
+ azoteq,ref-weight: ["azoteq,ref-select"]
+ azoteq,use-prox: ["azoteq,ref-select"]
+
+ additionalProperties: false
+
+ "^slider-[0-1]$":
+ type: object
+ description: Represents a slider comprising three or four channels.
+
+ properties:
+ azoteq,channel-select:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 3
+ maxItems: 4
+ items:
+ minimum: 0
+ maximum: 9
+ description:
+ Specifies the order of the channels that participate in the slider.
+
+ azoteq,slider-size:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 65535
+ description:
+ Specifies the slider's one-dimensional resolution, equal to the
+ maximum coordinate plus one.
+
+ azoteq,lower-cal:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 255
+ description: Specifies the slider's lower starting point.
+
+ azoteq,upper-cal:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 255
+ description: Specifies the slider's upper starting point.
+
+ azoteq,top-speed:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 65535
+ description:
+ Specifies the speed of movement after which coordinate filtering is
+ no longer applied.
+
+ azoteq,bottom-speed:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ multipleOf: 4
+ minimum: 0
+ maximum: 1020
+ description:
+ Specifies the speed of movement after which coordinate filtering is
+ linearly reduced.
+
+ azoteq,bottom-beta:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 7
+ description:
+ Specifies the coordinate filter damping factor to be applied
+ while the speed of movement is below that which is specified
+ by azoteq,bottom-speed.
+
+ azoteq,static-beta:
+ type: boolean
+ description:
+ Applies the coordinate filter damping factor specified by
+ azoteq,bottom-beta regardless of the speed of movement.
+
+ azoteq,use-prox:
+ type: boolean
+ description:
+ Directs the slider to respond to the proximity states of the selected
+ channels instead of their corresponding touch states. Note the slider
+ cannot report granular coordinates during a state of proximity.
+
+ linux,axis:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Specifies the absolute axis to which coordinates are mapped. Specify
+ ABS_WHEEL to operate the slider as a wheel (IQS7222C only).
+
+ patternProperties:
+ "^event-(press|tap|(swipe|flick)-(pos|neg))$":
+ type: object
+ description:
+ Represents a press or gesture (IQS7222A only) event reported by
+ the slider.
+
+ properties:
+ linux,code:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Numeric key code associated with the event.
+
+ azoteq,gesture-max-ms:
+ multipleOf: 4
+ minimum: 0
+ maximum: 1020
+ description:
+ Specifies the length of time (in ms) within which a tap, swipe
+ or flick gesture must be completed in order to be acknowledged
+ by the device. The number specified for any one swipe or flick
+ gesture applies to all remaining swipe or flick gestures.
+
+ azoteq,gesture-min-ms:
+ multipleOf: 4
+ minimum: 0
+ maximum: 124
+ description:
+ Specifies the length of time (in ms) for which a tap gesture must
+ be held in order to be acknowledged by the device.
+
+ azoteq,gesture-dist:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ multipleOf: 16
+ minimum: 0
+ maximum: 4080
+ description:
+ Specifies the distance across which a swipe or flick gesture must
+ travel in order to be acknowledged by the device. The number spec-
+ ified for any one swipe or flick gesture applies to all remaining
+ swipe or flick gestures.
+
+ azoteq,gpio-select:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 1
+ items:
+ minimum: 0
+ maximum: 0
+ description: |
+ Specifies an individual GPIO mapped to a tap, swipe or flick
+ gesture as follows:
+ 0: GPIO0
+ 1: GPIO3 (reserved)
+ 2: GPIO4 (reserved)
+
+ Note that although multiple events can be mapped to a single
+ GPIO, they must all be of the same type (proximity, touch or
+ slider gesture).
+
+ required:
+ - linux,code
+
+ additionalProperties: false
+
+ required:
+ - azoteq,channel-select
+
+ additionalProperties: false
+
+ "^gpio-[0-2]$":
+ type: object
+ description: |
+ Represents a GPIO mapped to one or more events as follows:
+ gpio-0: GPIO0
+ gpio-1: GPIO3 (IQS7222C only)
+ gpio-2: GPIO4 (IQS7222C only)
+
+ allOf:
+ - $ref: ../pinctrl/pincfg-node.yaml#
+
+ properties:
+ drive-open-drain: true
+
+ additionalProperties: false
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: azoteq,iqs7222b
+
+ then:
+ patternProperties:
+ "^cycle-[0-9]$":
+ properties:
+ azoteq,iref-enable: false
+
+ "^channel-([0-9]|1[0-9])$":
+ properties:
+ azoteq,ref-select: false
+
+ patternProperties:
+ "^event-(prox|touch)$":
+ properties:
+ azoteq,gpio-select: false
+
+ "^slider-[0-1]$": false
+
+ "^gpio-[0-2]$": false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: azoteq,iqs7222a
+
+ then:
+ patternProperties:
+ "^channel-([0-9]|1[0-9])$":
+ patternProperties:
+ "^event-(prox|touch)$":
+ properties:
+ azoteq,gpio-select:
+ maxItems: 1
+ items:
+ maximum: 0
+
+ "^slider-[0-1]$":
+ properties:
+ azoteq,slider-size:
+ multipleOf: 16
+ maximum: 4080
+
+ azoteq,top-speed:
+ multipleOf: 4
+ maximum: 1020
+
+ else:
+ patternProperties:
+ "^channel-([0-9]|1[0-9])$":
+ properties:
+ azoteq,ulp-allow: false
+
+ "^slider-[0-1]$":
+ patternProperties:
+ "^event-(press|tap|(swipe|flick)-(pos|neg))$":
+ properties:
+ azoteq,gesture-max-ms: false
+
+ azoteq,gesture-min-ms: false
+
+ azoteq,gesture-dist: false
+
+ azoteq,gpio-select: false
+
+required:
+ - compatible
+ - reg
+ - irq-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/input/input.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ iqs7222a@44 {
+ compatible = "azoteq,iqs7222a";
+ reg = <0x44>;
+ irq-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+ azoteq,lta-beta-lp = <7>;
+ azoteq,lta-beta-np = <8>;
+ azoteq,counts-beta-lp = <2>;
+ azoteq,counts-beta-np = <3>;
+ azoteq,lta-fast-beta-lp = <3>;
+ azoteq,lta-fast-beta-np = <4>;
+
+ cycle-0 {
+ azoteq,conv-period = <5>;
+ azoteq,conv-frac = <127>;
+ azoteq,tx-enable = <1>, <2>, <4>, <5>;
+ azoteq,dead-time-enable;
+ azoteq,sense-mode = <2>;
+ };
+
+ cycle-1 {
+ azoteq,conv-period = <5>;
+ azoteq,conv-frac = <127>;
+ azoteq,tx-enable = <5>;
+ azoteq,dead-time-enable;
+ azoteq,sense-mode = <2>;
+ };
+
+ cycle-2 {
+ azoteq,conv-period = <5>;
+ azoteq,conv-frac = <127>;
+ azoteq,tx-enable = <4>;
+ azoteq,dead-time-enable;
+ azoteq,sense-mode = <2>;
+ };
+
+ cycle-3 {
+ azoteq,conv-period = <5>;
+ azoteq,conv-frac = <127>;
+ azoteq,tx-enable = <2>;
+ azoteq,dead-time-enable;
+ azoteq,sense-mode = <2>;
+ };
+
+ cycle-4 {
+ azoteq,conv-period = <5>;
+ azoteq,conv-frac = <127>;
+ azoteq,tx-enable = <1>;
+ azoteq,dead-time-enable;
+ azoteq,sense-mode = <2>;
+ };
+
+ cycle-5 {
+ azoteq,conv-period = <2>;
+ azoteq,conv-frac = <0>;
+ };
+
+ cycle-6 {
+ azoteq,conv-period = <2>;
+ azoteq,conv-frac = <0>;
+ };
+
+ channel-0 {
+ azoteq,ulp-allow;
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <3>;
+ azoteq,ati-target = <800>;
+ azoteq,ati-base = <208>;
+ azoteq,ati-mode = <5>;
+ };
+
+ channel-1 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <3>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <208>;
+ azoteq,ati-mode = <5>;
+ };
+
+ channel-2 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <3>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <208>;
+ azoteq,ati-mode = <5>;
+ };
+
+ channel-3 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <3>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <208>;
+ azoteq,ati-mode = <5>;
+ };
+
+ channel-4 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <3>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <208>;
+ azoteq,ati-mode = <5>;
+ };
+
+ channel-5 {
+ azoteq,ulp-allow;
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <6>;
+ azoteq,ati-target = <800>;
+ azoteq,ati-base = <144>;
+ azoteq,ati-mode = <5>;
+ };
+
+ channel-6 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <6>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <160>;
+ azoteq,ati-mode = <5>;
+
+ event-touch {
+ linux,code = <KEY_MUTE>;
+ };
+ };
+
+ channel-7 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <6>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <160>;
+ azoteq,ati-mode = <5>;
+
+ event-touch {
+ linux,code = <KEY_VOLUMEDOWN>;
+ };
+ };
+
+ channel-8 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <6>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <160>;
+ azoteq,ati-mode = <5>;
+
+ event-touch {
+ linux,code = <KEY_VOLUMEUP>;
+ };
+ };
+
+ channel-9 {
+ azoteq,global-halt;
+ azoteq,invert-enable;
+ azoteq,rx-enable = <6>;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <160>;
+ azoteq,ati-mode = <5>;
+
+ event-touch {
+ linux,code = <KEY_POWER>;
+ };
+ };
+
+ channel-10 {
+ azoteq,ulp-allow;
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <112>;
+
+ event-touch {
+ linux,code = <SW_LID>;
+ linux,input-type = <EV_SW>;
+ };
+ };
+
+ channel-11 {
+ azoteq,ati-target = <496>;
+ azoteq,ati-base = <112>;
+ };
+
+ slider-0 {
+ azoteq,channel-select = <1>, <2>, <3>, <4>;
+ azoteq,slider-size = <4080>;
+ azoteq,upper-cal = <50>;
+ azoteq,lower-cal = <30>;
+ azoteq,top-speed = <200>;
+ azoteq,bottom-speed = <1>;
+ azoteq,bottom-beta = <3>;
+
+ event-tap {
+ linux,code = <KEY_PLAYPAUSE>;
+ azoteq,gesture-max-ms = <600>;
+ azoteq,gesture-min-ms = <24>;
+ };
+
+ event-flick-pos {
+ linux,code = <KEY_NEXTSONG>;
+ azoteq,gesture-max-ms = <600>;
+ azoteq,gesture-dist = <816>;
+ };
+
+ event-flick-neg {
+ linux,code = <KEY_PREVIOUSSONG>;
+ };
+ };
+ };
+ };
+
+...
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/mediatek,mt6779-keypad.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek's Keypad Controller device tree bindings
+
+maintainers:
+ - Fengping Yu <fengping.yu@mediatek.com>
+
+allOf:
+ - $ref: "/schemas/input/matrix-keymap.yaml#"
+
+description: |
+ Mediatek's Keypad controller is used to interface a SoC with a matrix-type
+ keypad device. The keypad controller supports multiple row and column lines.
+ A key can be placed at each intersection of a unique row and a unique column.
+ The keypad controller can sense a key-press and key-release and report the
+ event using a interrupt to the cpu.
+
+properties:
+ compatible:
+ oneOf:
+ - const: mediatek,mt6779-keypad
+ - items:
+ - enum:
+ - mediatek,mt6873-keypad
+ - const: mediatek,mt6779-keypad
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: kpd
+
+ wakeup-source:
+ description: use any event on keypad as wakeup event
+ type: boolean
+
+ debounce-delay-ms:
+ maximum: 256
+ default: 16
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/input/input.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ keyboard@10010000 {
+ compatible = "mediatek,mt6779-keypad";
+ reg = <0 0x10010000 0 0x1000>;
+ interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>;
+ clocks = <&clk26m>;
+ clock-names = "kpd";
+ };
+ };
Documentation/devicetree/bindings/mfd/mt6397.txt
Required properties:
-- compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
+- compatible: Should be one of:
+ - "mediatek,mt6397-keys"
+ - "mediatek,mt6323-keys"
+ - "mediatek,mt6358-keys"
- linux,keycodes: See Documentation/devicetree/bindings/input/input.yaml
Optional Properties:
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/imagis,ist3038c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Imagis IST30XXC family touchscreen controller bindings
+
+maintainers:
+ - Markuss Broks <markuss.broks@gmail.com>
+
+allOf:
+ - $ref: touchscreen.yaml#
+
+properties:
+ $nodename:
+ pattern: "^touchscreen@[0-9a-f]+$"
+
+ compatible:
+ enum:
+ - imagis,ist3038c
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ vdd-supply:
+ description: Power supply regulator for the chip
+
+ vddio-supply:
+ description: Power supply regulator for the I2C bus
+
+ touchscreen-size-x: true
+ touchscreen-size-y: true
+ touchscreen-fuzz-x: true
+ touchscreen-fuzz-y: true
+ touchscreen-inverted-x: true
+ touchscreen-inverted-y: true
+ touchscreen-swapped-x-y: true
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - touchscreen-size-x
+ - touchscreen-size-y
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ touchscreen@50 {
+ compatible = "imagis,ist3038c";
+ reg = <0x50>;
+ interrupt-parent = <&gpio>;
+ interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+ vdd-supply = <&ldo1_reg>;
+ vddio-supply = <&ldo2_reg>;
+ touchscreen-size-x = <720>;
+ touchscreen-size-y = <1280>;
+ touchscreen-fuzz-x = <10>;
+ touchscreen-fuzz-y = <10>;
+ touchscreen-inverted-x;
+ touchscreen-inverted-y;
+ };
+ };
+
+...
description: Ingenieurburo Fur Ic-Technologie (I/F/I)
"^ilitek,.*":
description: ILI Technology Corporation (ILITEK)
+ "^imagis,.*":
+ description: Imagis Technologies Co., Ltd.
"^img,.*":
description: Imagination Technologies Ltd.
"^imi,.*":
S: Maintained
F: drivers/usb/atm/ueagle-atm.c
+IMAGIS TOUCHSCREEN DRIVER
+M: Markuss Broks <markuss.broks@gmail.com>
+S: Maintained
+F: Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
+F: drivers/input/touchscreen/imagis.c
+
IMGTEC ASCII LCD DRIVER
M: Paul Burton <paulburton@kernel.org>
S: Maintained
Say Y here if you have a Holtek On Line Grip based game controller
and want to have force feedback support for it.
+config HID_VIVALDI_COMMON
+ tristate
+ help
+ ChromeOS Vivaldi HID parsing support library. This is a hidden
+ option so that drivers can use common code to parse the HID
+ descriptors for vivaldi function row keymap.
+
config HID_GOOGLE_HAMMER
tristate "Google Hammer Keyboard"
+ select HID_VIVALDI_COMMON
+ select INPUT_VIVALDIFMAP
depends on USB_HID && LEDS_CLASS && CROS_EC
help
Say Y here if you have a Google Hammer device.
config HID_VIVALDI
tristate "Vivaldi Keyboard"
+ select HID_VIVALDI_COMMON
+ select INPUT_VIVALDIFMAP
depends on HID
help
Say Y here if you want to enable support for Vivaldi keyboards.
obj-$(CONFIG_HID_GEMBIRD) += hid-gembird.o
obj-$(CONFIG_HID_GFRM) += hid-gfrm.o
obj-$(CONFIG_HID_GLORIOUS) += hid-glorious.o
+obj-$(CONFIG_HID_VIVALDI_COMMON) += hid-vivaldi-common.o
obj-$(CONFIG_HID_GOOGLE_HAMMER) += hid-google-hammer.o
obj-$(CONFIG_HID_VIVALDI) += hid-vivaldi.o
obj-$(CONFIG_HID_GT683R) += hid-gt683r.o
#include <linux/acpi.h>
#include <linux/hid.h>
+#include <linux/input/vivaldi-fmap.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/of.h>
#include <asm/unaligned.h>
#include "hid-ids.h"
+#include "hid-vivaldi-common.h"
/*
* C(hrome)B(ase)A(ttached)S(witch) - switch exported by Chrome EC and reporting
static int hammer_register_leds(struct hid_device *hdev)
{
struct hammer_kbd_leds *kbd_backlight;
- int error;
- kbd_backlight = kzalloc(sizeof(*kbd_backlight), GFP_KERNEL);
+ kbd_backlight = devm_kzalloc(&hdev->dev, sizeof(*kbd_backlight),
+ GFP_KERNEL);
if (!kbd_backlight)
return -ENOMEM;
/* Set backlight to 0% initially. */
hammer_kbd_brightness_set_blocking(&kbd_backlight->cdev, 0);
- error = led_classdev_register(&hdev->dev, &kbd_backlight->cdev);
- if (error)
- goto err_free_mem;
-
- hid_set_drvdata(hdev, kbd_backlight);
- return 0;
-
-err_free_mem:
- kfree(kbd_backlight);
- return error;
-}
-
-static void hammer_unregister_leds(struct hid_device *hdev)
-{
- struct hammer_kbd_leds *kbd_backlight = hid_get_drvdata(hdev);
-
- if (kbd_backlight) {
- led_classdev_unregister(&kbd_backlight->cdev);
- kfree(kbd_backlight);
- }
+ return devm_led_classdev_register(&hdev->dev, &kbd_backlight->cdev);
}
#define HID_UP_GOOGLEVENDOR 0xffd10000
kfree(buf);
}
+static void hammer_stop(void *hdev)
+{
+ hid_hw_stop(hdev);
+}
+
static int hammer_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
+ struct vivaldi_data *vdata;
int error;
+ vdata = devm_kzalloc(&hdev->dev, sizeof(*vdata), GFP_KERNEL);
+ if (!vdata)
+ return -ENOMEM;
+
+ hid_set_drvdata(hdev, vdata);
+
error = hid_parse(hdev);
if (error)
return error;
if (error)
return error;
+ error = devm_add_action(&hdev->dev, hammer_stop, hdev);
+ if (error)
+ return error;
+
/*
* We always want to poll for, and handle tablet mode events from
* devices that have folded usage, even when nobody has opened the input
spin_unlock_irqrestore(&cbas_ec_lock, flags);
}
- hammer_unregister_leds(hdev);
-
- hid_hw_stop(hdev);
+ /* Unregistering LEDs and stopping the hardware is done via devm */
}
static const struct hid_device_id hammer_devices[] = {
{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_GOOGLE_DON) },
- { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
+ { HID_DEVICE(BUS_USB, HID_GROUP_VIVALDI,
USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_GOOGLE_EEL) },
{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_GOOGLE_HAMMER) },
.id_table = hammer_devices,
.probe = hammer_probe,
.remove = hammer_remove,
+ .feature_mapping = vivaldi_feature_mapping,
+ .input_configured = vivaldi_input_configured,
.input_mapping = hammer_input_mapping,
.event = hammer_event,
};
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Helpers for ChromeOS HID Vivaldi keyboards
+ *
+ * Copyright (C) 2022 Google, Inc
+ */
+
+#include <linux/export.h>
+#include <linux/hid.h>
+#include <linux/input/vivaldi-fmap.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include "hid-vivaldi-common.h"
+
+#define MIN_FN_ROW_KEY 1
+#define MAX_FN_ROW_KEY VIVALDI_MAX_FUNCTION_ROW_KEYS
+#define HID_VD_FN_ROW_PHYSMAP 0x00000001
+#define HID_USAGE_FN_ROW_PHYSMAP (HID_UP_GOOGLEVENDOR | HID_VD_FN_ROW_PHYSMAP)
+
+/**
+ * vivaldi_feature_mapping - Fill out vivaldi keymap data exposed via HID
+ * @hdev: HID device to parse
+ * @field: HID field to parse
+ * @usage: HID usage to parse
+ *
+ * Note: this function assumes that driver data attached to @hdev contains an
+ * instance of &struct vivaldi_data at the very beginning.
+ */
+void vivaldi_feature_mapping(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage)
+{
+ struct vivaldi_data *data = hid_get_drvdata(hdev);
+ struct hid_report *report = field->report;
+ u8 *report_data, *buf;
+ u32 report_len;
+ unsigned int fn_key;
+ int ret;
+
+ if (field->logical != HID_USAGE_FN_ROW_PHYSMAP ||
+ (usage->hid & HID_USAGE_PAGE) != HID_UP_ORDINAL)
+ return;
+
+ fn_key = usage->hid & HID_USAGE;
+ if (fn_key < MIN_FN_ROW_KEY || fn_key > MAX_FN_ROW_KEY)
+ return;
+
+ if (fn_key > data->num_function_row_keys)
+ data->num_function_row_keys = fn_key;
+
+ report_data = buf = hid_alloc_report_buf(report, GFP_KERNEL);
+ if (!report_data)
+ return;
+
+ report_len = hid_report_len(report);
+ if (!report->id) {
+ /*
+ * hid_hw_raw_request() will stuff report ID (which will be 0)
+ * into the first byte of the buffer even for unnumbered
+ * reports, so we need to account for this to avoid getting
+ * -EOVERFLOW in return.
+ * Note that hid_alloc_report_buf() adds 7 bytes to the size
+ * so we can safely say that we have space for an extra byte.
+ */
+ report_len++;
+ }
+
+ ret = hid_hw_raw_request(hdev, report->id, report_data,
+ report_len, HID_FEATURE_REPORT,
+ HID_REQ_GET_REPORT);
+ if (ret < 0) {
+ dev_warn(&hdev->dev, "failed to fetch feature %d\n",
+ field->report->id);
+ goto out;
+ }
+
+ if (!report->id) {
+ /*
+ * Undo the damage from hid_hw_raw_request() for unnumbered
+ * reports.
+ */
+ report_data++;
+ report_len--;
+ }
+
+ ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, report_data,
+ report_len, 0);
+ if (ret) {
+ dev_warn(&hdev->dev, "failed to report feature %d\n",
+ field->report->id);
+ goto out;
+ }
+
+ data->function_row_physmap[fn_key - MIN_FN_ROW_KEY] =
+ field->value[usage->usage_index];
+
+out:
+ kfree(buf);
+}
+EXPORT_SYMBOL_GPL(vivaldi_feature_mapping);
+
+static ssize_t function_row_physmap_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hid_device *hdev = to_hid_device(dev);
+ struct vivaldi_data *data = hid_get_drvdata(hdev);
+
+ return vivaldi_function_row_physmap_show(data, buf);
+}
+
+static DEVICE_ATTR_RO(function_row_physmap);
+static struct attribute *vivaldi_sysfs_attrs[] = {
+ &dev_attr_function_row_physmap.attr,
+ NULL
+};
+
+static const struct attribute_group vivaldi_attribute_group = {
+ .attrs = vivaldi_sysfs_attrs,
+};
+
+/**
+ * vivaldi_input_configured - Complete initialization of device using vivaldi map
+ * @hdev: HID device to which vivaldi attributes should be attached
+ * @hidinput: HID input device (unused)
+ */
+int vivaldi_input_configured(struct hid_device *hdev,
+ struct hid_input *hidinput)
+{
+ struct vivaldi_data *data = hid_get_drvdata(hdev);
+
+ if (!data->num_function_row_keys)
+ return 0;
+
+ return devm_device_add_group(&hdev->dev, &vivaldi_attribute_group);
+}
+EXPORT_SYMBOL_GPL(vivaldi_input_configured);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _HID_VIVALDI_COMMON_H
+#define _HID_VIVALDI_COMMON_H
+
+struct hid_device;
+struct hid_field;
+struct hid_input;
+struct hid_usage;
+
+void vivaldi_feature_mapping(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage);
+
+int vivaldi_input_configured(struct hid_device *hdev,
+ struct hid_input *hidinput);
+
+#endif /* _HID_VIVALDI_COMMON_H */
#include <linux/device.h>
#include <linux/hid.h>
+#include <linux/input/vivaldi-fmap.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/sysfs.h>
-#define MIN_FN_ROW_KEY 1
-#define MAX_FN_ROW_KEY 24
-#define HID_VD_FN_ROW_PHYSMAP 0x00000001
-#define HID_USAGE_FN_ROW_PHYSMAP (HID_UP_GOOGLEVENDOR | HID_VD_FN_ROW_PHYSMAP)
-
-struct vivaldi_data {
- u32 function_row_physmap[MAX_FN_ROW_KEY - MIN_FN_ROW_KEY + 1];
- int max_function_row_key;
-};
-
-static ssize_t function_row_physmap_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct hid_device *hdev = to_hid_device(dev);
- struct vivaldi_data *drvdata = hid_get_drvdata(hdev);
- ssize_t size = 0;
- int i;
-
- if (!drvdata->max_function_row_key)
- return 0;
-
- for (i = 0; i < drvdata->max_function_row_key; i++)
- size += sprintf(buf + size, "%02X ",
- drvdata->function_row_physmap[i]);
- size += sprintf(buf + size, "\n");
- return size;
-}
-
-static DEVICE_ATTR_RO(function_row_physmap);
-static struct attribute *sysfs_attrs[] = {
- &dev_attr_function_row_physmap.attr,
- NULL
-};
-
-static const struct attribute_group input_attribute_group = {
- .attrs = sysfs_attrs
-};
+#include "hid-vivaldi-common.h"
static int vivaldi_probe(struct hid_device *hdev,
const struct hid_device_id *id)
return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
}
-static void vivaldi_feature_mapping(struct hid_device *hdev,
- struct hid_field *field,
- struct hid_usage *usage)
-{
- struct vivaldi_data *drvdata = hid_get_drvdata(hdev);
- struct hid_report *report = field->report;
- int fn_key;
- int ret;
- u32 report_len;
- u8 *report_data, *buf;
-
- if (field->logical != HID_USAGE_FN_ROW_PHYSMAP ||
- (usage->hid & HID_USAGE_PAGE) != HID_UP_ORDINAL)
- return;
-
- fn_key = (usage->hid & HID_USAGE);
- if (fn_key < MIN_FN_ROW_KEY || fn_key > MAX_FN_ROW_KEY)
- return;
- if (fn_key > drvdata->max_function_row_key)
- drvdata->max_function_row_key = fn_key;
-
- report_data = buf = hid_alloc_report_buf(report, GFP_KERNEL);
- if (!report_data)
- return;
-
- report_len = hid_report_len(report);
- if (!report->id) {
- /*
- * hid_hw_raw_request() will stuff report ID (which will be 0)
- * into the first byte of the buffer even for unnumbered
- * reports, so we need to account for this to avoid getting
- * -EOVERFLOW in return.
- * Note that hid_alloc_report_buf() adds 7 bytes to the size
- * so we can safely say that we have space for an extra byte.
- */
- report_len++;
- }
-
- ret = hid_hw_raw_request(hdev, report->id, report_data,
- report_len, HID_FEATURE_REPORT,
- HID_REQ_GET_REPORT);
- if (ret < 0) {
- dev_warn(&hdev->dev, "failed to fetch feature %d\n",
- field->report->id);
- goto out;
- }
-
- if (!report->id) {
- /*
- * Undo the damage from hid_hw_raw_request() for unnumbered
- * reports.
- */
- report_data++;
- report_len--;
- }
-
- ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, report_data,
- report_len, 0);
- if (ret) {
- dev_warn(&hdev->dev, "failed to report feature %d\n",
- field->report->id);
- goto out;
- }
-
- drvdata->function_row_physmap[fn_key - MIN_FN_ROW_KEY] =
- field->value[usage->usage_index];
-
-out:
- kfree(buf);
-}
-
-static int vivaldi_input_configured(struct hid_device *hdev,
- struct hid_input *hidinput)
-{
- return devm_device_add_group(&hdev->dev, &input_attribute_group);
-}
-
static const struct hid_device_id vivaldi_table[] = {
- { HID_DEVICE(HID_BUS_ANY, HID_GROUP_VIVALDI, HID_ANY_ID,
- HID_ANY_ID) },
+ { HID_DEVICE(HID_BUS_ANY, HID_GROUP_VIVALDI, HID_ANY_ID, HID_ANY_ID) },
{ }
};
To compile this driver as a module, choose M here: the
module will be called matrix-keymap.
+config INPUT_VIVALDIFMAP
+ tristate
+ help
+ ChromeOS Vivaldi keymap support library. This is a hidden
+ option so that drivers can use common code to parse and
+ expose the vivaldi function row keymap.
+
comment "Userland interfaces"
config INPUT_MOUSEDEV
obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o
obj-$(CONFIG_INPUT_SPARSEKMAP) += sparse-keymap.o
obj-$(CONFIG_INPUT_MATRIXKMAP) += matrix-keymap.o
+obj-$(CONFIG_INPUT_VIVALDIFMAP) += vivaldi-fmap.o
obj-$(CONFIG_INPUT_LEDS) += input-leds.o
obj-$(CONFIG_INPUT_MOUSEDEV) += mousedev.o
static const struct input_value input_value_sync = { EV_SYN, SYN_REPORT, 1 };
+static const unsigned int input_max_code[EV_CNT] = {
+ [EV_KEY] = KEY_MAX,
+ [EV_REL] = REL_MAX,
+ [EV_ABS] = ABS_MAX,
+ [EV_MSC] = MSC_MAX,
+ [EV_SW] = SW_MAX,
+ [EV_LED] = LED_MAX,
+ [EV_SND] = SND_MAX,
+ [EV_FF] = FF_MAX,
+};
+
static inline int is_event_supported(unsigned int code,
unsigned long *bm, unsigned int max)
{
{
struct input_absinfo *absinfo;
+ __set_bit(EV_ABS, dev->evbit);
+ __set_bit(axis, dev->absbit);
+
input_alloc_absinfo(dev);
if (!dev->absinfo)
return;
absinfo->maximum = max;
absinfo->fuzz = fuzz;
absinfo->flat = flat;
-
- __set_bit(EV_ABS, dev->evbit);
- __set_bit(axis, dev->absbit);
}
EXPORT_SYMBOL(input_set_abs_params);
+/**
+ * input_copy_abs - Copy absinfo from one input_dev to another
+ * @dst: Destination input device to copy the abs settings to
+ * @dst_axis: ABS_* value selecting the destination axis
+ * @src: Source input device to copy the abs settings from
+ * @src_axis: ABS_* value selecting the source axis
+ *
+ * Set absinfo for the selected destination axis by copying it from
+ * the specified source input device's source axis.
+ * This is useful to e.g. setup a pen/stylus input-device for combined
+ * touchscreen/pen hardware where the pen uses the same coordinates as
+ * the touchscreen.
+ */
+void input_copy_abs(struct input_dev *dst, unsigned int dst_axis,
+ const struct input_dev *src, unsigned int src_axis)
+{
+ /* src must have EV_ABS and src_axis set */
+ if (WARN_ON(!(test_bit(EV_ABS, src->evbit) &&
+ test_bit(src_axis, src->absbit))))
+ return;
+
+ /*
+ * input_alloc_absinfo() may have failed for the source. Our caller is
+ * expected to catch this when registering the input devices, which may
+ * happen after the input_copy_abs() call.
+ */
+ if (!src->absinfo)
+ return;
+
+ input_set_capability(dst, EV_ABS, dst_axis);
+ if (!dst->absinfo)
+ return;
+
+ dst->absinfo[dst_axis] = src->absinfo[src_axis];
+}
+EXPORT_SYMBOL(input_copy_abs);
/**
* input_grab_device - grabs device for exclusive use
static int input_inhibit_device(struct input_dev *dev)
{
- int ret = 0;
-
mutex_lock(&dev->mutex);
if (dev->inhibited)
out:
mutex_unlock(&dev->mutex);
- return ret;
+ return 0;
}
static int input_uninhibit_device(struct input_dev *dev)
*/
void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code)
{
+ if (type < EV_CNT && input_max_code[type] &&
+ code > input_max_code[type]) {
+ pr_err("%s: invalid code %u for type %u\n", __func__, code,
+ type);
+ dump_stack();
+ return;
+ }
+
switch (type) {
case EV_KEY:
__set_bit(code, dev->keybit);
case EV_ABS:
input_alloc_absinfo(dev);
- if (!dev->absinfo)
- return;
-
__set_bit(code, dev->absbit);
break;
Say Y here if you want enable support for the four
built-in controller ports on the Nintendo 64 console.
+config JOYSTICK_SENSEHAT
+ tristate "Raspberry Pi Sense HAT joystick"
+ depends on INPUT && I2C
+ select MFD_SIMPLE_MFD_I2C
+ help
+ Say Y here if you want to enable the driver for the
+ the Raspberry Pi Sense HAT.
+
+ To compile this driver as a module, choose M here: the
+ module will be called sensehat_joystick.
+
endif
obj-$(CONFIG_JOYSTICK_PSXPAD_SPI) += psxpad-spi.o
obj-$(CONFIG_JOYSTICK_PXRC) += pxrc.o
obj-$(CONFIG_JOYSTICK_QWIIC) += qwiic-joystick.o
+obj-$(CONFIG_JOYSTICK_SENSEHAT) += sensehat-joystick.o
obj-$(CONFIG_JOYSTICK_SIDEWINDER) += sidewinder.o
obj-$(CONFIG_JOYSTICK_SPACEBALL) += spaceball.o
obj-$(CONFIG_JOYSTICK_SPACEORB) += spaceorb.o
{
struct adi *adi = port->adi;
struct gameport *gameport = port->gameport;
- unsigned char u, v, w, x, z;
+ unsigned char u, v, w, x;
int t[2], s[2], i;
unsigned long flags;
local_irq_save(flags);
gameport_trigger(gameport);
- v = z = gameport_read(gameport);
+ v = gameport_read(gameport);
do {
u = v;
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Raspberry Pi Sense HAT joystick driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ * Copyright (C) 2021 Charles Mirabile, Mwesigwa Guma, Joel Savitz
+ *
+ * Original Author: Serge Schneider
+ * Revised for upstream Linux by: Charles Mirabile, Mwesigwa Guma, Joel Savitz
+ */
+
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/property.h>
+
+#define JOYSTICK_SMB_REG 0xf2
+
+struct sensehat_joystick {
+ struct platform_device *pdev;
+ struct input_dev *keys_dev;
+ unsigned long prev_states;
+ struct regmap *regmap;
+};
+
+static const unsigned int keymap[] = {
+ BTN_DPAD_DOWN, BTN_DPAD_RIGHT, BTN_DPAD_UP, BTN_SELECT, BTN_DPAD_LEFT,
+};
+
+static irqreturn_t sensehat_joystick_report(int irq, void *cookie)
+{
+ struct sensehat_joystick *sensehat_joystick = cookie;
+ unsigned long curr_states, changes;
+ unsigned int keys;
+ int error;
+ int i;
+
+ error = regmap_read(sensehat_joystick->regmap, JOYSTICK_SMB_REG, &keys);
+ if (error < 0) {
+ dev_err(&sensehat_joystick->pdev->dev,
+ "Failed to read joystick state: %d", error);
+ return IRQ_NONE;
+ }
+ curr_states = keys;
+ bitmap_xor(&changes, &curr_states, &sensehat_joystick->prev_states,
+ ARRAY_SIZE(keymap));
+
+ for_each_set_bit(i, &changes, ARRAY_SIZE(keymap))
+ input_report_key(sensehat_joystick->keys_dev, keymap[i],
+ curr_states & BIT(i));
+
+ input_sync(sensehat_joystick->keys_dev);
+ sensehat_joystick->prev_states = keys;
+ return IRQ_HANDLED;
+}
+
+static int sensehat_joystick_probe(struct platform_device *pdev)
+{
+ struct sensehat_joystick *sensehat_joystick;
+ int error, i, irq;
+
+ sensehat_joystick = devm_kzalloc(&pdev->dev, sizeof(*sensehat_joystick),
+ GFP_KERNEL);
+ if (!sensehat_joystick)
+ return -ENOMEM;
+
+ sensehat_joystick->pdev = pdev;
+
+ sensehat_joystick->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!sensehat_joystick->regmap) {
+ dev_err(&pdev->dev, "unable to get sensehat regmap");
+ return -ENODEV;
+ }
+
+ sensehat_joystick->keys_dev = devm_input_allocate_device(&pdev->dev);
+ if (!sensehat_joystick->keys_dev) {
+ dev_err(&pdev->dev, "Could not allocate input device");
+ return -ENOMEM;
+ }
+
+ sensehat_joystick->keys_dev->name = "Raspberry Pi Sense HAT Joystick";
+ sensehat_joystick->keys_dev->phys = "sensehat-joystick/input0";
+ sensehat_joystick->keys_dev->id.bustype = BUS_I2C;
+
+ __set_bit(EV_KEY, sensehat_joystick->keys_dev->evbit);
+ __set_bit(EV_REP, sensehat_joystick->keys_dev->evbit);
+ for (i = 0; i < ARRAY_SIZE(keymap); i++)
+ __set_bit(keymap[i], sensehat_joystick->keys_dev->keybit);
+
+ error = input_register_device(sensehat_joystick->keys_dev);
+ if (error) {
+ dev_err(&pdev->dev, "Could not register input device");
+ return error;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Could not retrieve interrupt request");
+ return irq;
+ }
+
+ error = devm_request_threaded_irq(&pdev->dev, irq,
+ NULL, sensehat_joystick_report,
+ IRQF_ONESHOT, "keys",
+ sensehat_joystick);
+ if (error) {
+ dev_err(&pdev->dev, "IRQ request failed");
+ return error;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id sensehat_joystick_device_id[] = {
+ { .compatible = "raspberrypi,sensehat-joystick" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, sensehat_joystick_device_id);
+
+static struct platform_driver sensehat_joystick_driver = {
+ .probe = sensehat_joystick_probe,
+ .driver = {
+ .name = "sensehat-joystick",
+ .of_match_table = sensehat_joystick_device_id,
+ },
+};
+
+module_platform_driver(sensehat_joystick_driver);
+
+MODULE_DESCRIPTION("Raspberry Pi Sense HAT joystick driver");
+MODULE_AUTHOR("Charles Mirabile <cmirabil@redhat.com>");
+MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
+MODULE_LICENSE("GPL");
{ 0x045e, 0x02e3, "Microsoft X-Box One Elite pad", 0, XTYPE_XBOXONE },
{ 0x045e, 0x02ea, "Microsoft X-Box One S pad", 0, XTYPE_XBOXONE },
{ 0x045e, 0x0719, "Xbox 360 Wireless Receiver", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W },
- { 0x045e, 0x0b12, "Microsoft Xbox One X pad", MAP_SELECT_BUTTON, XTYPE_XBOXONE },
+ { 0x045e, 0x0b12, "Microsoft Xbox Series S|X Controller", MAP_SELECT_BUTTON, XTYPE_XBOXONE },
{ 0x046d, 0xc21d, "Logitech Gamepad F310", 0, XTYPE_XBOX360 },
{ 0x046d, 0xc21e, "Logitech Gamepad F510", 0, XTYPE_XBOX360 },
{ 0x046d, 0xc21f, "Logitech Gamepad F710", 0, XTYPE_XBOX360 },
select SERIO_LIBPS2
select SERIO_I8042 if ARCH_MIGHT_HAVE_PC_SERIO
select SERIO_GSCPS2 if GSC
+ select INPUT_VIVALDIFMAP
help
Say Y here if you want to use a standard AT or PS/2 keyboard. Usually
you'll need this, unless you have a different type keyboard (USB, ADB
config KEYBOARD_CROS_EC
tristate "ChromeOS EC keyboard"
select INPUT_MATRIXKMAP
+ select INPUT_VIVALDIFMAP
depends on CROS_EC
help
Say Y here to enable the matrix keyboard used by ChromeOS devices
To compile this driver as a module, choose M here: the
module will be called bcm-keypad.
+config KEYBOARD_MT6779
+ tristate "MediaTek Keypad Support"
+ depends on ARCH_MEDIATEK || COMPILE_TEST
+ select REGMAP_MMIO
+ select INPUT_MATRIXKMAP
+ help
+ Say Y here if you want to use the keypad on MediaTek SoCs.
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called mt6779-keypad.
+
config KEYBOARD_MTK_PMIC
tristate "MediaTek PMIC keys support"
depends on MFD_MT6397
obj-$(CONFIG_KEYBOARD_MAX7359) += max7359_keypad.o
obj-$(CONFIG_KEYBOARD_MCS) += mcs_touchkey.o
obj-$(CONFIG_KEYBOARD_MPR121) += mpr121_touchkey.o
+obj-$(CONFIG_KEYBOARD_MT6779) += mt6779-keypad.o
obj-$(CONFIG_KEYBOARD_MTK_PMIC) += mtk-pmic-keys.o
obj-$(CONFIG_KEYBOARD_NEWTON) += newtonkbd.o
obj-$(CONFIG_KEYBOARD_NOMADIK) += nomadik-ske-keypad.o
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
+#include <linux/input/vivaldi-fmap.h>
#include <linux/serio.h>
#include <linux/workqueue.h>
#include <linux/libps2.h>
module_param_named(terminal, atkbd_terminal, bool, 0);
MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
-#define MAX_FUNCTION_ROW_KEYS 24
-
#define SCANCODE(keymap) ((keymap >> 16) & 0xFFFF)
#define KEYCODE(keymap) (keymap & 0xFFFF)
/* Serializes reconnect(), attr->set() and event work */
struct mutex mutex;
- u32 function_row_physmap[MAX_FUNCTION_ROW_KEYS];
- int num_function_row_keys;
+ struct vivaldi_data vdata;
};
/*
static ssize_t atkbd_show_function_row_physmap(struct atkbd *atkbd, char *buf)
{
- ssize_t size = 0;
- int i;
-
- if (!atkbd->num_function_row_keys)
- return 0;
-
- for (i = 0; i < atkbd->num_function_row_keys; i++)
- size += scnprintf(buf + size, PAGE_SIZE - size, "%02X ",
- atkbd->function_row_physmap[i]);
- size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
- return size;
+ return vivaldi_function_row_physmap_show(&atkbd->vdata, buf);
}
static umode_t atkbd_attr_is_visible(struct kobject *kobj,
struct atkbd *atkbd = serio_get_drvdata(serio);
if (attr == &atkbd_attr_function_row_physmap.attr &&
- !atkbd->num_function_row_keys)
+ !atkbd->vdata.num_function_row_keys)
return 0;
return attr->mode;
/* Parse "function-row-physmap" property */
n = device_property_count_u32(dev, "function-row-physmap");
- if (n > 0 && n <= MAX_FUNCTION_ROW_KEYS &&
+ if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS &&
!device_property_read_u32_array(dev, "function-row-physmap",
- atkbd->function_row_physmap, n)) {
- atkbd->num_function_row_keys = n;
+ atkbd->vdata.function_row_physmap,
+ n)) {
+ atkbd->vdata.num_function_row_keys = n;
dev_dbg(dev, "FW reported %d function-row key locations\n", n);
}
}
writel(0xFFFFFFFF, kp->base + KPICR0_OFFSET);
writel(0xFFFFFFFF, kp->base + KPICR1_OFFSET);
- if (kp->clk)
- clk_disable_unprepare(kp->clk);
+ clk_disable_unprepare(kp->clk);
}
static int bcm_kp_open(struct input_dev *dev)
if (!priv)
return -ENOMEM;
- priv->syscon =
- syscon_regmap_lookup_by_compatible("cirrus,ep7209-syscon1");
+ priv->syscon = syscon_regmap_lookup_by_phandle(np, "syscon");
if (IS_ERR(priv->syscon))
return PTR_ERR(priv->syscon);
#include <linux/bitops.h>
#include <linux/i2c.h>
#include <linux/input.h>
+#include <linux/input/vivaldi-fmap.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/notifier.h>
#include <asm/unaligned.h>
-#define MAX_NUM_TOP_ROW_KEYS 15
-
/**
* struct cros_ec_keyb - Structure representing EC keyboard device
*
* @idev: The input device for the matrix keys.
* @bs_idev: The input device for non-matrix buttons and switches (or NULL).
* @notifier: interrupt event notifier for transport devices
- * @function_row_physmap: An array of the encoded rows/columns for the top
- * row function keys, in an order from left to right
- * @num_function_row_keys: The number of top row keys in a custom keyboard
+ * @vdata: vivaldi function row data
*/
struct cros_ec_keyb {
unsigned int rows;
struct input_dev *bs_idev;
struct notifier_block notifier;
- u16 function_row_physmap[MAX_NUM_TOP_ROW_KEYS];
- size_t num_function_row_keys;
+ struct vivaldi_data vdata;
};
/**
int err;
struct property *prop;
const __be32 *p;
- u16 *physmap;
+ u32 *physmap;
u32 key_pos;
- int row, col;
+ unsigned int row, col, scancode, n_physmap;
err = matrix_keypad_parse_properties(dev, &ckdev->rows, &ckdev->cols);
if (err)
ckdev->idev = idev;
cros_ec_keyb_compute_valid_keys(ckdev);
- physmap = ckdev->function_row_physmap;
+ physmap = ckdev->vdata.function_row_physmap;
+ n_physmap = 0;
of_property_for_each_u32(dev->of_node, "function-row-physmap",
prop, p, key_pos) {
- if (ckdev->num_function_row_keys == MAX_NUM_TOP_ROW_KEYS) {
+ if (n_physmap == VIVALDI_MAX_FUNCTION_ROW_KEYS) {
dev_warn(dev, "Only support up to %d top row keys\n",
- MAX_NUM_TOP_ROW_KEYS);
+ VIVALDI_MAX_FUNCTION_ROW_KEYS);
break;
}
row = KEY_ROW(key_pos);
col = KEY_COL(key_pos);
- *physmap = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
- physmap++;
- ckdev->num_function_row_keys++;
+ scancode = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
+ physmap[n_physmap++] = scancode;
}
+ ckdev->vdata.num_function_row_keys = n_physmap;
err = input_register_device(ckdev->idev);
if (err) {
struct device_attribute *attr,
char *buf)
{
- ssize_t size = 0;
- int i;
- struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
- u16 *physmap = ckdev->function_row_physmap;
-
- for (i = 0; i < ckdev->num_function_row_keys; i++)
- size += scnprintf(buf + size, PAGE_SIZE - size,
- "%s%02X", size ? " " : "", physmap[i]);
- if (size)
- size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
+ const struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
+ const struct vivaldi_data *data = &ckdev->vdata;
- return size;
+ return vivaldi_function_row_physmap_show(data, buf);
}
static DEVICE_ATTR_RO(function_row_physmap);
struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
if (attr == &dev_attr_function_row_physmap.attr &&
- !ckdev->num_function_row_keys)
+ !ckdev->vdata.num_function_row_keys)
return 0;
return attr->mode;
struct ep93xx_keypad *keypad;
const struct matrix_keymap_data *keymap_data;
struct input_dev *input_dev;
- struct resource *res;
int err;
keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL);
if (keypad->irq < 0)
return keypad->irq;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENXIO;
-
- keypad->mmio_base = devm_ioremap_resource(&pdev->dev, res);
+ keypad->mmio_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(keypad->mmio_base))
return PTR_ERR(keypad->mmio_base);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc.
+ * Author Fengping Yu <fengping.yu@mediatek.com>
+ */
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/input/matrix_keypad.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define MTK_KPD_NAME "mt6779-keypad"
+#define MTK_KPD_MEM 0x0004
+#define MTK_KPD_DEBOUNCE 0x0018
+#define MTK_KPD_DEBOUNCE_MASK GENMASK(13, 0)
+#define MTK_KPD_DEBOUNCE_MAX_MS 256
+#define MTK_KPD_NUM_MEMS 5
+#define MTK_KPD_NUM_BITS 136 /* 4*32+8 MEM5 only use 8 BITS */
+
+struct mt6779_keypad {
+ struct regmap *regmap;
+ struct input_dev *input_dev;
+ struct clk *clk;
+ u32 n_rows;
+ u32 n_cols;
+ DECLARE_BITMAP(keymap_state, MTK_KPD_NUM_BITS);
+};
+
+static const struct regmap_config mt6779_keypad_regmap_cfg = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = sizeof(u32),
+ .max_register = 36,
+};
+
+static irqreturn_t mt6779_keypad_irq_handler(int irq, void *dev_id)
+{
+ struct mt6779_keypad *keypad = dev_id;
+ const unsigned short *keycode = keypad->input_dev->keycode;
+ DECLARE_BITMAP(new_state, MTK_KPD_NUM_BITS);
+ DECLARE_BITMAP(change, MTK_KPD_NUM_BITS);
+ unsigned int bit_nr;
+ unsigned int row, col;
+ unsigned int scancode;
+ unsigned int row_shift = get_count_order(keypad->n_cols);
+ bool pressed;
+
+ regmap_bulk_read(keypad->regmap, MTK_KPD_MEM,
+ new_state, MTK_KPD_NUM_MEMS);
+
+ bitmap_xor(change, new_state, keypad->keymap_state, MTK_KPD_NUM_BITS);
+
+ for_each_set_bit(bit_nr, change, MTK_KPD_NUM_BITS) {
+ /*
+ * Registers are 32bits, but only bits [15:0] are used to
+ * indicate key status.
+ */
+ if (bit_nr % 32 >= 16)
+ continue;
+
+ row = bit_nr / 32;
+ col = bit_nr % 32;
+ scancode = MATRIX_SCAN_CODE(row, col, row_shift);
+ /* 1: not pressed, 0: pressed */
+ pressed = !test_bit(bit_nr, new_state);
+ dev_dbg(&keypad->input_dev->dev, "%s",
+ pressed ? "pressed" : "released");
+
+ input_event(keypad->input_dev, EV_MSC, MSC_SCAN, scancode);
+ input_report_key(keypad->input_dev, keycode[scancode], pressed);
+ input_sync(keypad->input_dev);
+
+ dev_dbg(&keypad->input_dev->dev,
+ "report Linux keycode = %d\n", keycode[scancode]);
+ }
+
+ bitmap_copy(keypad->keymap_state, new_state, MTK_KPD_NUM_BITS);
+
+ return IRQ_HANDLED;
+}
+
+static void mt6779_keypad_clk_disable(void *data)
+{
+ clk_disable_unprepare(data);
+}
+
+static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
+{
+ struct mt6779_keypad *keypad;
+ void __iomem *base;
+ int irq;
+ u32 debounce;
+ bool wakeup;
+ int error;
+
+ keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL);
+ if (!keypad)
+ return -ENOMEM;
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ keypad->regmap = devm_regmap_init_mmio(&pdev->dev, base,
+ &mt6779_keypad_regmap_cfg);
+ if (IS_ERR(keypad->regmap)) {
+ dev_err(&pdev->dev,
+ "regmap init failed:%pe\n", keypad->regmap);
+ return PTR_ERR(keypad->regmap);
+ }
+
+ bitmap_fill(keypad->keymap_state, MTK_KPD_NUM_BITS);
+
+ keypad->input_dev = devm_input_allocate_device(&pdev->dev);
+ if (!keypad->input_dev) {
+ dev_err(&pdev->dev, "Failed to allocate input dev\n");
+ return -ENOMEM;
+ }
+
+ keypad->input_dev->name = MTK_KPD_NAME;
+ keypad->input_dev->id.bustype = BUS_HOST;
+
+ error = matrix_keypad_parse_properties(&pdev->dev, &keypad->n_rows,
+ &keypad->n_cols);
+ if (error) {
+ dev_err(&pdev->dev, "Failed to parse keypad params\n");
+ return error;
+ }
+
+ if (device_property_read_u32(&pdev->dev, "debounce-delay-ms",
+ &debounce))
+ debounce = 16;
+
+ if (debounce > MTK_KPD_DEBOUNCE_MAX_MS) {
+ dev_err(&pdev->dev,
+ "Debounce time exceeds the maximum allowed time %dms\n",
+ MTK_KPD_DEBOUNCE_MAX_MS);
+ return -EINVAL;
+ }
+
+ wakeup = device_property_read_bool(&pdev->dev, "wakeup-source");
+
+ dev_dbg(&pdev->dev, "n_row=%d n_col=%d debounce=%d\n",
+ keypad->n_rows, keypad->n_cols, debounce);
+
+ error = matrix_keypad_build_keymap(NULL, NULL,
+ keypad->n_rows, keypad->n_cols,
+ NULL, keypad->input_dev);
+ if (error) {
+ dev_err(&pdev->dev, "Failed to build keymap\n");
+ return error;
+ }
+
+ input_set_capability(keypad->input_dev, EV_MSC, MSC_SCAN);
+
+ regmap_write(keypad->regmap, MTK_KPD_DEBOUNCE,
+ (debounce * (1 << 5)) & MTK_KPD_DEBOUNCE_MASK);
+
+ keypad->clk = devm_clk_get(&pdev->dev, "kpd");
+ if (IS_ERR(keypad->clk))
+ return PTR_ERR(keypad->clk);
+
+ error = clk_prepare_enable(keypad->clk);
+ if (error) {
+ dev_err(&pdev->dev, "cannot prepare/enable keypad clock\n");
+ return error;
+ }
+
+ error = devm_add_action_or_reset(&pdev->dev, mt6779_keypad_clk_disable,
+ keypad->clk);
+ if (error)
+ return error;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ error = devm_request_threaded_irq(&pdev->dev, irq,
+ NULL, mt6779_keypad_irq_handler,
+ IRQF_ONESHOT, MTK_KPD_NAME, keypad);
+ if (error) {
+ dev_err(&pdev->dev, "Failed to request IRQ#%d: %d\n",
+ irq, error);
+ return error;
+ }
+
+ error = input_register_device(keypad->input_dev);
+ if (error) {
+ dev_err(&pdev->dev, "Failed to register device\n");
+ return error;
+ }
+
+ error = device_init_wakeup(&pdev->dev, wakeup);
+ if (error)
+ dev_warn(&pdev->dev, "device_init_wakeup() failed: %d\n",
+ error);
+
+ return 0;
+}
+
+static const struct of_device_id mt6779_keypad_of_match[] = {
+ { .compatible = "mediatek,mt6779-keypad" },
+ { .compatible = "mediatek,mt6873-keypad" },
+ { /* sentinel */ }
+};
+
+static struct platform_driver mt6779_keypad_pdrv = {
+ .probe = mt6779_keypad_pdrv_probe,
+ .driver = {
+ .name = MTK_KPD_NAME,
+ .of_match_table = mt6779_keypad_of_match,
+ },
+};
+module_platform_driver(mt6779_keypad_pdrv);
+
+MODULE_AUTHOR("Mediatek Corporation");
+MODULE_DESCRIPTION("MTK Keypad (KPD) Driver");
+MODULE_LICENSE("GPL");
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/mt6323/registers.h>
+#include <linux/mfd/mt6358/registers.h>
#include <linux/mfd/mt6397/core.h>
#include <linux/mfd/mt6397/registers.h>
#include <linux/module.h>
.pmic_rst_reg = MT6323_TOP_RST_MISC,
};
+static const struct mtk_pmic_regs mt6358_regs = {
+ .keys_regs[MTK_PMIC_PWRKEY_INDEX] =
+ MTK_PMIC_KEYS_REGS(MT6358_TOPSTATUS,
+ 0x2, MT6358_PSC_TOP_INT_CON0, 0x5),
+ .keys_regs[MTK_PMIC_HOMEKEY_INDEX] =
+ MTK_PMIC_KEYS_REGS(MT6358_TOPSTATUS,
+ 0x8, MT6358_PSC_TOP_INT_CON0, 0xa),
+ .pmic_rst_reg = MT6358_TOP_RST_MISC,
+};
+
struct mtk_pmic_keys_info {
struct mtk_pmic_keys *keys;
const struct mtk_pmic_keys_regs *regs;
unsigned int keycode;
int irq;
+ int irq_r; /* optional: release irq if different */
bool wakeup:1;
};
return ret;
}
+ if (info->irq_r > 0) {
+ ret = devm_request_threaded_irq(keys->dev, info->irq_r, NULL,
+ mtk_pmic_keys_irq_handler_thread,
+ IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
+ "mtk-pmic-keys", info);
+ if (ret) {
+ dev_err(keys->dev, "Failed to request IRQ_r: %d: %d\n",
+ info->irq, ret);
+ return ret;
+ }
+ }
+
input_set_capability(keys->input_dev, EV_KEY, info->keycode);
return 0;
int index;
for (index = 0; index < MTK_PMIC_MAX_KEY_COUNT; index++) {
- if (keys->keys[index].wakeup)
+ if (keys->keys[index].wakeup) {
enable_irq_wake(keys->keys[index].irq);
+ if (keys->keys[index].irq_r > 0)
+ enable_irq_wake(keys->keys[index].irq_r);
+ }
}
return 0;
int index;
for (index = 0; index < MTK_PMIC_MAX_KEY_COUNT; index++) {
- if (keys->keys[index].wakeup)
+ if (keys->keys[index].wakeup) {
disable_irq_wake(keys->keys[index].irq);
+ if (keys->keys[index].irq_r > 0)
+ disable_irq_wake(keys->keys[index].irq_r);
+ }
}
return 0;
}, {
.compatible = "mediatek,mt6323-keys",
.data = &mt6323_regs,
+ }, {
+ .compatible = "mediatek,mt6358-keys",
+ .data = &mt6358_regs,
}, {
/* sentinel */
}
unsigned int keycount;
struct mt6397_chip *pmic_chip = dev_get_drvdata(pdev->dev.parent);
struct device_node *node = pdev->dev.of_node, *child;
+ static const char *const irqnames[] = { "powerkey", "homekey" };
+ static const char *const irqnames_r[] = { "powerkey_r", "homekey_r" };
struct mtk_pmic_keys *keys;
const struct mtk_pmic_regs *mtk_pmic_regs;
struct input_dev *input_dev;
input_dev->id.version = 0x0001;
keycount = of_get_available_child_count(node);
- if (keycount > MTK_PMIC_MAX_KEY_COUNT) {
+ if (keycount > MTK_PMIC_MAX_KEY_COUNT ||
+ keycount > ARRAY_SIZE(irqnames)) {
dev_err(keys->dev, "too many keys defined (%d)\n", keycount);
return -EINVAL;
}
for_each_child_of_node(node, child) {
keys->keys[index].regs = &mtk_pmic_regs->keys_regs[index];
- keys->keys[index].irq = platform_get_irq(pdev, index);
+ keys->keys[index].irq =
+ platform_get_irq_byname(pdev, irqnames[index]);
if (keys->keys[index].irq < 0) {
of_node_put(child);
return keys->keys[index].irq;
}
+ if (of_device_is_compatible(node, "mediatek,mt6358-keys")) {
+ keys->keys[index].irq_r = platform_get_irq_byname(pdev,
+ irqnames_r[index]);
+
+ if (keys->keys[index].irq_r < 0) {
+ of_node_put(child);
+ return keys->keys[index].irq_r;
+ }
+ }
+
error = of_property_read_u32(child,
"linux,keycodes", &keys->keys[index].keycode);
if (error) {
* there are no boards known to use channel 1.
*/
+#include <linux/clk.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
+#include <linux/pm_wakeup.h>
#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
#include <linux/slab.h>
#define LRADC_CTRL 0x00
/* struct lradc_variant - Describe sun4i-a10-lradc-keys hardware variant
* @divisor_numerator: The numerator of lradc Vref internally divisor
* @divisor_denominator: The denominator of lradc Vref internally divisor
+ * @has_clock_reset: If the binding requires a clock and reset
*/
struct lradc_variant {
u8 divisor_numerator;
u8 divisor_denominator;
+ bool has_clock_reset;
};
static const struct lradc_variant lradc_variant_a10 = {
.divisor_denominator = 4
};
+static const struct lradc_variant lradc_variant_r329 = {
+ .divisor_numerator = 3,
+ .divisor_denominator = 4,
+ .has_clock_reset = true,
+};
+
struct sun4i_lradc_keymap {
u32 voltage;
u32 keycode;
struct device *dev;
struct input_dev *input;
void __iomem *base;
+ struct clk *clk;
+ struct reset_control *reset;
struct regulator *vref_supply;
struct sun4i_lradc_keymap *chan0_map;
const struct lradc_variant *variant;
if (error)
return error;
+ error = reset_control_deassert(lradc->reset);
+ if (error)
+ goto err_disable_reg;
+
+ error = clk_prepare_enable(lradc->clk);
+ if (error)
+ goto err_assert_reset;
+
lradc->vref = regulator_get_voltage(lradc->vref_supply) *
lradc->variant->divisor_numerator /
lradc->variant->divisor_denominator;
writel(CHAN0_KEYUP_IRQ | CHAN0_KEYDOWN_IRQ, lradc->base + LRADC_INTC);
return 0;
+
+err_assert_reset:
+ reset_control_assert(lradc->reset);
+err_disable_reg:
+ regulator_disable(lradc->vref_supply);
+
+ return error;
}
static void sun4i_lradc_close(struct input_dev *dev)
SAMPLE_RATE(2), lradc->base + LRADC_CTRL);
writel(0, lradc->base + LRADC_INTC);
+ clk_disable_unprepare(lradc->clk);
+ reset_control_assert(lradc->reset);
regulator_disable(lradc->vref_supply);
}
{
struct sun4i_lradc_data *lradc;
struct device *dev = &pdev->dev;
- int i;
- int error;
+ int error, i, irq;
lradc = devm_kzalloc(dev, sizeof(struct sun4i_lradc_data), GFP_KERNEL);
if (!lradc)
return -EINVAL;
}
+ if (lradc->variant->has_clock_reset) {
+ lradc->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(lradc->clk))
+ return PTR_ERR(lradc->clk);
+
+ lradc->reset = devm_reset_control_get_exclusive(dev, NULL);
+ if (IS_ERR(lradc->reset))
+ return PTR_ERR(lradc->reset);
+ }
+
lradc->vref_supply = devm_regulator_get(dev, "vref");
if (IS_ERR(lradc->vref_supply))
return PTR_ERR(lradc->vref_supply);
if (IS_ERR(lradc->base))
return PTR_ERR(lradc->base);
- error = devm_request_irq(dev, platform_get_irq(pdev, 0),
- sun4i_lradc_irq, 0,
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ error = devm_request_irq(dev, irq, sun4i_lradc_irq, 0,
"sun4i-a10-lradc-keys", lradc);
if (error)
return error;
if (error)
return error;
+ if (device_property_read_bool(dev, "wakeup-source")) {
+ error = dev_pm_set_wake_irq(dev, irq);
+ if (error)
+ dev_warn(dev,
+ "Failed to set IRQ %d as a wake IRQ: %d\n",
+ irq, error);
+ else
+ device_set_wakeup_capable(dev, true);
+ }
+
return 0;
}
.data = &lradc_variant_a10 },
{ .compatible = "allwinner,sun8i-a83t-r-lradc",
.data = &r_lradc_variant_a83t },
+ { .compatible = "allwinner,sun50i-r329-lradc",
+ .data = &lradc_variant_r329 },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sun4i_lradc_of_match);
To compile this driver as a module, choose M here: the
module will be called iqs626a.
+config INPUT_IQS7222
+ tristate "Azoteq IQS7222A/B/C capacitive touch controller"
+ depends on I2C
+ help
+ Say Y to enable support for the Azoteq IQS7222A/B/C family
+ of capacitive touch controllers.
+
+ To compile this driver as a module, choose M here: the
+ module will be called iqs7222.
+
config INPUT_CMA3000
tristate "VTI CMA3000 Tri-axis accelerometer"
help
obj-$(CONFIG_INPUT_IMS_PCU) += ims-pcu.o
obj-$(CONFIG_INPUT_IQS269A) += iqs269a.o
obj-$(CONFIG_INPUT_IQS626A) += iqs626a.o
+obj-$(CONFIG_INPUT_IQS7222) += iqs7222.o
obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o
obj-$(CONFIG_INPUT_KXTJ9) += kxtj9.o
obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o
* Copyright (C) 2015 Dialog Semiconductor Ltd.
*/
+#include <linux/devm-helpers.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/input.h>
return IRQ_HANDLED;
}
-static void da9063_cancel_poll(void *data)
-{
- struct da9063_onkey *onkey = data;
-
- cancel_delayed_work_sync(&onkey->work);
-}
-
static int da9063_onkey_probe(struct platform_device *pdev)
{
struct da9063_onkey *onkey;
input_set_capability(onkey->input, EV_KEY, KEY_POWER);
- INIT_DELAYED_WORK(&onkey->work, da9063_poll_on);
-
- error = devm_add_action(&pdev->dev, da9063_cancel_poll, onkey);
+ error = devm_delayed_work_autocancel(&pdev->dev, &onkey->work,
+ da9063_poll_on);
if (error) {
dev_err(&pdev->dev,
"Failed to add cancel poll action: %d\n",
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Azoteq IQS7222A/B/C Capacitive Touch Controller
+ *
+ * Copyright (C) 2022 Jeff LaBundy <jeff@labundy.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/ktime.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+#define IQS7222_PROD_NUM 0x00
+#define IQS7222_PROD_NUM_A 840
+#define IQS7222_PROD_NUM_B 698
+#define IQS7222_PROD_NUM_C 863
+
+#define IQS7222_SYS_STATUS 0x10
+#define IQS7222_SYS_STATUS_RESET BIT(3)
+#define IQS7222_SYS_STATUS_ATI_ERROR BIT(1)
+#define IQS7222_SYS_STATUS_ATI_ACTIVE BIT(0)
+
+#define IQS7222_CHAN_SETUP_0_REF_MODE_MASK GENMASK(15, 14)
+#define IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW BIT(15)
+#define IQS7222_CHAN_SETUP_0_REF_MODE_REF BIT(14)
+#define IQS7222_CHAN_SETUP_0_CHAN_EN BIT(8)
+
+#define IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK GENMASK(2, 0)
+#define IQS7222_SLDR_SETUP_2_RES_MASK GENMASK(15, 8)
+#define IQS7222_SLDR_SETUP_2_RES_SHIFT 8
+#define IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK GENMASK(7, 0)
+#define IQS7222_SLDR_SETUP_3_CHAN_SEL_MASK GENMASK(9, 0)
+
+#define IQS7222_GPIO_SETUP_0_GPIO_EN BIT(0)
+
+#define IQS7222_SYS_SETUP 0xD0
+#define IQS7222_SYS_SETUP_INTF_MODE_MASK GENMASK(7, 6)
+#define IQS7222_SYS_SETUP_INTF_MODE_TOUCH BIT(7)
+#define IQS7222_SYS_SETUP_INTF_MODE_EVENT BIT(6)
+#define IQS7222_SYS_SETUP_PWR_MODE_MASK GENMASK(5, 4)
+#define IQS7222_SYS_SETUP_PWR_MODE_AUTO IQS7222_SYS_SETUP_PWR_MODE_MASK
+#define IQS7222_SYS_SETUP_REDO_ATI BIT(2)
+#define IQS7222_SYS_SETUP_ACK_RESET BIT(0)
+
+#define IQS7222_EVENT_MASK_ATI BIT(12)
+
+#define IQS7222_COMMS_HOLD BIT(0)
+#define IQS7222_COMMS_ERROR 0xEEEE
+#define IQS7222_COMMS_RETRY_MS 50
+#define IQS7222_COMMS_TIMEOUT_MS 100
+#define IQS7222_RESET_TIMEOUT_MS 250
+#define IQS7222_ATI_TIMEOUT_MS 2000
+
+#define IQS7222_MAX_COLS_STAT 8
+#define IQS7222_MAX_COLS_CYCLE 3
+#define IQS7222_MAX_COLS_GLBL 3
+#define IQS7222_MAX_COLS_BTN 3
+#define IQS7222_MAX_COLS_CHAN 6
+#define IQS7222_MAX_COLS_FILT 2
+#define IQS7222_MAX_COLS_SLDR 11
+#define IQS7222_MAX_COLS_GPIO 3
+#define IQS7222_MAX_COLS_SYS 13
+
+#define IQS7222_MAX_CHAN 20
+#define IQS7222_MAX_SLDR 2
+
+#define IQS7222_NUM_RETRIES 5
+#define IQS7222_REG_OFFSET 0x100
+
+enum iqs7222_reg_key_id {
+ IQS7222_REG_KEY_NONE,
+ IQS7222_REG_KEY_PROX,
+ IQS7222_REG_KEY_TOUCH,
+ IQS7222_REG_KEY_DEBOUNCE,
+ IQS7222_REG_KEY_TAP,
+ IQS7222_REG_KEY_AXIAL,
+ IQS7222_REG_KEY_WHEEL,
+ IQS7222_REG_KEY_NO_WHEEL,
+ IQS7222_REG_KEY_RESERVED
+};
+
+enum iqs7222_reg_grp_id {
+ IQS7222_REG_GRP_STAT,
+ IQS7222_REG_GRP_CYCLE,
+ IQS7222_REG_GRP_GLBL,
+ IQS7222_REG_GRP_BTN,
+ IQS7222_REG_GRP_CHAN,
+ IQS7222_REG_GRP_FILT,
+ IQS7222_REG_GRP_SLDR,
+ IQS7222_REG_GRP_GPIO,
+ IQS7222_REG_GRP_SYS,
+ IQS7222_NUM_REG_GRPS
+};
+
+static const char * const iqs7222_reg_grp_names[] = {
+ [IQS7222_REG_GRP_CYCLE] = "cycle",
+ [IQS7222_REG_GRP_CHAN] = "channel",
+ [IQS7222_REG_GRP_SLDR] = "slider",
+ [IQS7222_REG_GRP_GPIO] = "gpio",
+};
+
+static const unsigned int iqs7222_max_cols[] = {
+ [IQS7222_REG_GRP_STAT] = IQS7222_MAX_COLS_STAT,
+ [IQS7222_REG_GRP_CYCLE] = IQS7222_MAX_COLS_CYCLE,
+ [IQS7222_REG_GRP_GLBL] = IQS7222_MAX_COLS_GLBL,
+ [IQS7222_REG_GRP_BTN] = IQS7222_MAX_COLS_BTN,
+ [IQS7222_REG_GRP_CHAN] = IQS7222_MAX_COLS_CHAN,
+ [IQS7222_REG_GRP_FILT] = IQS7222_MAX_COLS_FILT,
+ [IQS7222_REG_GRP_SLDR] = IQS7222_MAX_COLS_SLDR,
+ [IQS7222_REG_GRP_GPIO] = IQS7222_MAX_COLS_GPIO,
+ [IQS7222_REG_GRP_SYS] = IQS7222_MAX_COLS_SYS,
+};
+
+static const unsigned int iqs7222_gpio_links[] = { 2, 5, 6, };
+
+struct iqs7222_event_desc {
+ const char *name;
+ u16 mask;
+ u16 val;
+ u16 enable;
+ enum iqs7222_reg_key_id reg_key;
+};
+
+static const struct iqs7222_event_desc iqs7222_kp_events[] = {
+ {
+ .name = "event-prox",
+ .enable = BIT(0),
+ .reg_key = IQS7222_REG_KEY_PROX,
+ },
+ {
+ .name = "event-touch",
+ .enable = BIT(1),
+ .reg_key = IQS7222_REG_KEY_TOUCH,
+ },
+};
+
+static const struct iqs7222_event_desc iqs7222_sl_events[] = {
+ { .name = "event-press", },
+ {
+ .name = "event-tap",
+ .mask = BIT(0),
+ .val = BIT(0),
+ .enable = BIT(0),
+ .reg_key = IQS7222_REG_KEY_TAP,
+ },
+ {
+ .name = "event-swipe-pos",
+ .mask = BIT(5) | BIT(1),
+ .val = BIT(1),
+ .enable = BIT(1),
+ .reg_key = IQS7222_REG_KEY_AXIAL,
+ },
+ {
+ .name = "event-swipe-neg",
+ .mask = BIT(5) | BIT(1),
+ .val = BIT(5) | BIT(1),
+ .enable = BIT(1),
+ .reg_key = IQS7222_REG_KEY_AXIAL,
+ },
+ {
+ .name = "event-flick-pos",
+ .mask = BIT(5) | BIT(2),
+ .val = BIT(2),
+ .enable = BIT(2),
+ .reg_key = IQS7222_REG_KEY_AXIAL,
+ },
+ {
+ .name = "event-flick-neg",
+ .mask = BIT(5) | BIT(2),
+ .val = BIT(5) | BIT(2),
+ .enable = BIT(2),
+ .reg_key = IQS7222_REG_KEY_AXIAL,
+ },
+};
+
+struct iqs7222_reg_grp_desc {
+ u16 base;
+ int num_row;
+ int num_col;
+};
+
+struct iqs7222_dev_desc {
+ u16 prod_num;
+ u16 fw_major;
+ u16 fw_minor;
+ u16 sldr_res;
+ u16 touch_link;
+ u16 wheel_enable;
+ int allow_offset;
+ int event_offset;
+ int comms_offset;
+ struct iqs7222_reg_grp_desc reg_grps[IQS7222_NUM_REG_GRPS];
+};
+
+static const struct iqs7222_dev_desc iqs7222_devs[] = {
+ {
+ .prod_num = IQS7222_PROD_NUM_A,
+ .fw_major = 1,
+ .fw_minor = 12,
+ .sldr_res = U8_MAX * 16,
+ .touch_link = 1768,
+ .allow_offset = 9,
+ .event_offset = 10,
+ .comms_offset = 12,
+ .reg_grps = {
+ [IQS7222_REG_GRP_STAT] = {
+ .base = IQS7222_SYS_STATUS,
+ .num_row = 1,
+ .num_col = 8,
+ },
+ [IQS7222_REG_GRP_CYCLE] = {
+ .base = 0x8000,
+ .num_row = 7,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_GLBL] = {
+ .base = 0x8700,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_BTN] = {
+ .base = 0x9000,
+ .num_row = 12,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_CHAN] = {
+ .base = 0xA000,
+ .num_row = 12,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_FILT] = {
+ .base = 0xAC00,
+ .num_row = 1,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_SLDR] = {
+ .base = 0xB000,
+ .num_row = 2,
+ .num_col = 11,
+ },
+ [IQS7222_REG_GRP_GPIO] = {
+ .base = 0xC000,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_SYS] = {
+ .base = IQS7222_SYS_SETUP,
+ .num_row = 1,
+ .num_col = 13,
+ },
+ },
+ },
+ {
+ .prod_num = IQS7222_PROD_NUM_B,
+ .fw_major = 1,
+ .fw_minor = 43,
+ .event_offset = 10,
+ .comms_offset = 11,
+ .reg_grps = {
+ [IQS7222_REG_GRP_STAT] = {
+ .base = IQS7222_SYS_STATUS,
+ .num_row = 1,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_CYCLE] = {
+ .base = 0x8000,
+ .num_row = 10,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_GLBL] = {
+ .base = 0x8A00,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_BTN] = {
+ .base = 0x9000,
+ .num_row = 20,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_CHAN] = {
+ .base = 0xB000,
+ .num_row = 20,
+ .num_col = 4,
+ },
+ [IQS7222_REG_GRP_FILT] = {
+ .base = 0xC400,
+ .num_row = 1,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_SYS] = {
+ .base = IQS7222_SYS_SETUP,
+ .num_row = 1,
+ .num_col = 13,
+ },
+ },
+ },
+ {
+ .prod_num = IQS7222_PROD_NUM_B,
+ .fw_major = 1,
+ .fw_minor = 27,
+ .reg_grps = {
+ [IQS7222_REG_GRP_STAT] = {
+ .base = IQS7222_SYS_STATUS,
+ .num_row = 1,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_CYCLE] = {
+ .base = 0x8000,
+ .num_row = 10,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_GLBL] = {
+ .base = 0x8A00,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_BTN] = {
+ .base = 0x9000,
+ .num_row = 20,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_CHAN] = {
+ .base = 0xB000,
+ .num_row = 20,
+ .num_col = 4,
+ },
+ [IQS7222_REG_GRP_FILT] = {
+ .base = 0xC400,
+ .num_row = 1,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_SYS] = {
+ .base = IQS7222_SYS_SETUP,
+ .num_row = 1,
+ .num_col = 10,
+ },
+ },
+ },
+ {
+ .prod_num = IQS7222_PROD_NUM_C,
+ .fw_major = 2,
+ .fw_minor = 6,
+ .sldr_res = U16_MAX,
+ .touch_link = 1686,
+ .wheel_enable = BIT(3),
+ .event_offset = 9,
+ .comms_offset = 10,
+ .reg_grps = {
+ [IQS7222_REG_GRP_STAT] = {
+ .base = IQS7222_SYS_STATUS,
+ .num_row = 1,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_CYCLE] = {
+ .base = 0x8000,
+ .num_row = 5,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_GLBL] = {
+ .base = 0x8500,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_BTN] = {
+ .base = 0x9000,
+ .num_row = 10,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_CHAN] = {
+ .base = 0xA000,
+ .num_row = 10,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_FILT] = {
+ .base = 0xAA00,
+ .num_row = 1,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_SLDR] = {
+ .base = 0xB000,
+ .num_row = 2,
+ .num_col = 10,
+ },
+ [IQS7222_REG_GRP_GPIO] = {
+ .base = 0xC000,
+ .num_row = 3,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_SYS] = {
+ .base = IQS7222_SYS_SETUP,
+ .num_row = 1,
+ .num_col = 12,
+ },
+ },
+ },
+ {
+ .prod_num = IQS7222_PROD_NUM_C,
+ .fw_major = 1,
+ .fw_minor = 13,
+ .sldr_res = U16_MAX,
+ .touch_link = 1674,
+ .wheel_enable = BIT(3),
+ .event_offset = 9,
+ .comms_offset = 10,
+ .reg_grps = {
+ [IQS7222_REG_GRP_STAT] = {
+ .base = IQS7222_SYS_STATUS,
+ .num_row = 1,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_CYCLE] = {
+ .base = 0x8000,
+ .num_row = 5,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_GLBL] = {
+ .base = 0x8500,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_BTN] = {
+ .base = 0x9000,
+ .num_row = 10,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_CHAN] = {
+ .base = 0xA000,
+ .num_row = 10,
+ .num_col = 6,
+ },
+ [IQS7222_REG_GRP_FILT] = {
+ .base = 0xAA00,
+ .num_row = 1,
+ .num_col = 2,
+ },
+ [IQS7222_REG_GRP_SLDR] = {
+ .base = 0xB000,
+ .num_row = 2,
+ .num_col = 10,
+ },
+ [IQS7222_REG_GRP_GPIO] = {
+ .base = 0xC000,
+ .num_row = 1,
+ .num_col = 3,
+ },
+ [IQS7222_REG_GRP_SYS] = {
+ .base = IQS7222_SYS_SETUP,
+ .num_row = 1,
+ .num_col = 11,
+ },
+ },
+ },
+};
+
+struct iqs7222_prop_desc {
+ const char *name;
+ enum iqs7222_reg_grp_id reg_grp;
+ enum iqs7222_reg_key_id reg_key;
+ int reg_offset;
+ int reg_shift;
+ int reg_width;
+ int val_pitch;
+ int val_min;
+ int val_max;
+ bool invert;
+ const char *label;
+};
+
+static const struct iqs7222_prop_desc iqs7222_props[] = {
+ {
+ .name = "azoteq,conv-period",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 0,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .label = "conversion period",
+ },
+ {
+ .name = "azoteq,conv-frac",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 0,
+ .reg_shift = 0,
+ .reg_width = 8,
+ .label = "conversion frequency fractional divider",
+ },
+ {
+ .name = "azoteq,rx-float-inactive",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 1,
+ .reg_shift = 6,
+ .reg_width = 1,
+ .invert = true,
+ },
+ {
+ .name = "azoteq,dead-time-enable",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 1,
+ .reg_shift = 5,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,tx-freq-fosc",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 1,
+ .reg_shift = 4,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,vbias-enable",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 1,
+ .reg_shift = 3,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,sense-mode",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 3,
+ .val_max = 3,
+ .label = "sensing mode",
+ },
+ {
+ .name = "azoteq,iref-enable",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 2,
+ .reg_shift = 10,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,iref-level",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 2,
+ .reg_shift = 4,
+ .reg_width = 4,
+ .label = "current reference level",
+ },
+ {
+ .name = "azoteq,iref-trim",
+ .reg_grp = IQS7222_REG_GRP_CYCLE,
+ .reg_offset = 2,
+ .reg_shift = 0,
+ .reg_width = 4,
+ .label = "current reference trim",
+ },
+ {
+ .name = "azoteq,rf-filt-enable",
+ .reg_grp = IQS7222_REG_GRP_GLBL,
+ .reg_offset = 0,
+ .reg_shift = 15,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,max-counts",
+ .reg_grp = IQS7222_REG_GRP_GLBL,
+ .reg_offset = 0,
+ .reg_shift = 13,
+ .reg_width = 2,
+ .label = "maximum counts",
+ },
+ {
+ .name = "azoteq,auto-mode",
+ .reg_grp = IQS7222_REG_GRP_GLBL,
+ .reg_offset = 0,
+ .reg_shift = 2,
+ .reg_width = 2,
+ .label = "number of conversions",
+ },
+ {
+ .name = "azoteq,ati-frac-div-fine",
+ .reg_grp = IQS7222_REG_GRP_GLBL,
+ .reg_offset = 1,
+ .reg_shift = 9,
+ .reg_width = 5,
+ .label = "ATI fine fractional divider",
+ },
+ {
+ .name = "azoteq,ati-frac-div-coarse",
+ .reg_grp = IQS7222_REG_GRP_GLBL,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 5,
+ .label = "ATI coarse fractional divider",
+ },
+ {
+ .name = "azoteq,ati-comp-select",
+ .reg_grp = IQS7222_REG_GRP_GLBL,
+ .reg_offset = 2,
+ .reg_shift = 0,
+ .reg_width = 10,
+ .label = "ATI compensation selection",
+ },
+ {
+ .name = "azoteq,ati-band",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 12,
+ .reg_width = 2,
+ .label = "ATI band",
+ },
+ {
+ .name = "azoteq,global-halt",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 11,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,invert-enable",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 10,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,dual-direction",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 9,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,samp-cap-double",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 3,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,vref-half",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 2,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,proj-bias",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 0,
+ .reg_shift = 0,
+ .reg_width = 2,
+ .label = "projected bias current",
+ },
+ {
+ .name = "azoteq,ati-target",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 1,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .val_pitch = 8,
+ .label = "ATI target",
+ },
+ {
+ .name = "azoteq,ati-base",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 1,
+ .reg_shift = 3,
+ .reg_width = 5,
+ .val_pitch = 16,
+ .label = "ATI base",
+ },
+ {
+ .name = "azoteq,ati-mode",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 3,
+ .val_max = 5,
+ .label = "ATI mode",
+ },
+ {
+ .name = "azoteq,ati-frac-div-fine",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 2,
+ .reg_shift = 9,
+ .reg_width = 5,
+ .label = "ATI fine fractional divider",
+ },
+ {
+ .name = "azoteq,ati-frac-mult-coarse",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 2,
+ .reg_shift = 5,
+ .reg_width = 4,
+ .label = "ATI coarse fractional multiplier",
+ },
+ {
+ .name = "azoteq,ati-frac-div-coarse",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 2,
+ .reg_shift = 0,
+ .reg_width = 5,
+ .label = "ATI coarse fractional divider",
+ },
+ {
+ .name = "azoteq,ati-comp-div",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 3,
+ .reg_shift = 11,
+ .reg_width = 5,
+ .label = "ATI compensation divider",
+ },
+ {
+ .name = "azoteq,ati-comp-select",
+ .reg_grp = IQS7222_REG_GRP_CHAN,
+ .reg_offset = 3,
+ .reg_shift = 0,
+ .reg_width = 10,
+ .label = "ATI compensation selection",
+ },
+ {
+ .name = "azoteq,debounce-exit",
+ .reg_grp = IQS7222_REG_GRP_BTN,
+ .reg_key = IQS7222_REG_KEY_DEBOUNCE,
+ .reg_offset = 0,
+ .reg_shift = 12,
+ .reg_width = 4,
+ .label = "debounce exit factor",
+ },
+ {
+ .name = "azoteq,debounce-enter",
+ .reg_grp = IQS7222_REG_GRP_BTN,
+ .reg_key = IQS7222_REG_KEY_DEBOUNCE,
+ .reg_offset = 0,
+ .reg_shift = 8,
+ .reg_width = 4,
+ .label = "debounce entrance factor",
+ },
+ {
+ .name = "azoteq,thresh",
+ .reg_grp = IQS7222_REG_GRP_BTN,
+ .reg_key = IQS7222_REG_KEY_PROX,
+ .reg_offset = 0,
+ .reg_shift = 0,
+ .reg_width = 8,
+ .val_max = 127,
+ .label = "threshold",
+ },
+ {
+ .name = "azoteq,thresh",
+ .reg_grp = IQS7222_REG_GRP_BTN,
+ .reg_key = IQS7222_REG_KEY_TOUCH,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 8,
+ .label = "threshold",
+ },
+ {
+ .name = "azoteq,hyst",
+ .reg_grp = IQS7222_REG_GRP_BTN,
+ .reg_key = IQS7222_REG_KEY_TOUCH,
+ .reg_offset = 1,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .label = "hysteresis",
+ },
+ {
+ .name = "azoteq,lta-beta-lp",
+ .reg_grp = IQS7222_REG_GRP_FILT,
+ .reg_offset = 0,
+ .reg_shift = 12,
+ .reg_width = 4,
+ .label = "low-power mode long-term average beta",
+ },
+ {
+ .name = "azoteq,lta-beta-np",
+ .reg_grp = IQS7222_REG_GRP_FILT,
+ .reg_offset = 0,
+ .reg_shift = 8,
+ .reg_width = 4,
+ .label = "normal-power mode long-term average beta",
+ },
+ {
+ .name = "azoteq,counts-beta-lp",
+ .reg_grp = IQS7222_REG_GRP_FILT,
+ .reg_offset = 0,
+ .reg_shift = 4,
+ .reg_width = 4,
+ .label = "low-power mode counts beta",
+ },
+ {
+ .name = "azoteq,counts-beta-np",
+ .reg_grp = IQS7222_REG_GRP_FILT,
+ .reg_offset = 0,
+ .reg_shift = 0,
+ .reg_width = 4,
+ .label = "normal-power mode counts beta",
+ },
+ {
+ .name = "azoteq,lta-fast-beta-lp",
+ .reg_grp = IQS7222_REG_GRP_FILT,
+ .reg_offset = 1,
+ .reg_shift = 4,
+ .reg_width = 4,
+ .label = "low-power mode long-term average fast beta",
+ },
+ {
+ .name = "azoteq,lta-fast-beta-np",
+ .reg_grp = IQS7222_REG_GRP_FILT,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 4,
+ .label = "normal-power mode long-term average fast beta",
+ },
+ {
+ .name = "azoteq,lower-cal",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_offset = 0,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .label = "lower calibration",
+ },
+ {
+ .name = "azoteq,static-beta",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_NO_WHEEL,
+ .reg_offset = 0,
+ .reg_shift = 6,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,bottom-beta",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_NO_WHEEL,
+ .reg_offset = 0,
+ .reg_shift = 3,
+ .reg_width = 3,
+ .label = "bottom beta",
+ },
+ {
+ .name = "azoteq,static-beta",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_WHEEL,
+ .reg_offset = 0,
+ .reg_shift = 7,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,bottom-beta",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_WHEEL,
+ .reg_offset = 0,
+ .reg_shift = 4,
+ .reg_width = 3,
+ .label = "bottom beta",
+ },
+ {
+ .name = "azoteq,bottom-speed",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_offset = 1,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .label = "bottom speed",
+ },
+ {
+ .name = "azoteq,upper-cal",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 8,
+ .label = "upper calibration",
+ },
+ {
+ .name = "azoteq,gesture-max-ms",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_TAP,
+ .reg_offset = 9,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .val_pitch = 4,
+ .label = "maximum gesture time",
+ },
+ {
+ .name = "azoteq,gesture-min-ms",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_TAP,
+ .reg_offset = 9,
+ .reg_shift = 3,
+ .reg_width = 5,
+ .val_pitch = 4,
+ .label = "minimum gesture time",
+ },
+ {
+ .name = "azoteq,gesture-dist",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_AXIAL,
+ .reg_offset = 10,
+ .reg_shift = 8,
+ .reg_width = 8,
+ .val_pitch = 16,
+ .label = "gesture distance",
+ },
+ {
+ .name = "azoteq,gesture-max-ms",
+ .reg_grp = IQS7222_REG_GRP_SLDR,
+ .reg_key = IQS7222_REG_KEY_AXIAL,
+ .reg_offset = 10,
+ .reg_shift = 0,
+ .reg_width = 8,
+ .val_pitch = 4,
+ .label = "maximum gesture time",
+ },
+ {
+ .name = "drive-open-drain",
+ .reg_grp = IQS7222_REG_GRP_GPIO,
+ .reg_offset = 0,
+ .reg_shift = 1,
+ .reg_width = 1,
+ },
+ {
+ .name = "azoteq,timeout-ati-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 1,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .val_pitch = 500,
+ .label = "ATI error timeout",
+ },
+ {
+ .name = "azoteq,rate-ati-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 2,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .label = "ATI report rate",
+ },
+ {
+ .name = "azoteq,timeout-np-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 3,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .label = "normal-power mode timeout",
+ },
+ {
+ .name = "azoteq,rate-np-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 4,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .val_max = 3000,
+ .label = "normal-power mode report rate",
+ },
+ {
+ .name = "azoteq,timeout-lp-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 5,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .label = "low-power mode timeout",
+ },
+ {
+ .name = "azoteq,rate-lp-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 6,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .val_max = 3000,
+ .label = "low-power mode report rate",
+ },
+ {
+ .name = "azoteq,timeout-ulp-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 7,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .label = "ultra-low-power mode timeout",
+ },
+ {
+ .name = "azoteq,rate-ulp-ms",
+ .reg_grp = IQS7222_REG_GRP_SYS,
+ .reg_offset = 8,
+ .reg_shift = 0,
+ .reg_width = 16,
+ .val_max = 3000,
+ .label = "ultra-low-power mode report rate",
+ },
+};
+
+struct iqs7222_private {
+ const struct iqs7222_dev_desc *dev_desc;
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *irq_gpio;
+ struct i2c_client *client;
+ struct input_dev *keypad;
+ unsigned int kp_type[IQS7222_MAX_CHAN][ARRAY_SIZE(iqs7222_kp_events)];
+ unsigned int kp_code[IQS7222_MAX_CHAN][ARRAY_SIZE(iqs7222_kp_events)];
+ unsigned int sl_code[IQS7222_MAX_SLDR][ARRAY_SIZE(iqs7222_sl_events)];
+ unsigned int sl_axis[IQS7222_MAX_SLDR];
+ u16 cycle_setup[IQS7222_MAX_CHAN / 2][IQS7222_MAX_COLS_CYCLE];
+ u16 glbl_setup[IQS7222_MAX_COLS_GLBL];
+ u16 btn_setup[IQS7222_MAX_CHAN][IQS7222_MAX_COLS_BTN];
+ u16 chan_setup[IQS7222_MAX_CHAN][IQS7222_MAX_COLS_CHAN];
+ u16 filt_setup[IQS7222_MAX_COLS_FILT];
+ u16 sldr_setup[IQS7222_MAX_SLDR][IQS7222_MAX_COLS_SLDR];
+ u16 gpio_setup[ARRAY_SIZE(iqs7222_gpio_links)][IQS7222_MAX_COLS_GPIO];
+ u16 sys_setup[IQS7222_MAX_COLS_SYS];
+};
+
+static u16 *iqs7222_setup(struct iqs7222_private *iqs7222,
+ enum iqs7222_reg_grp_id reg_grp, int row)
+{
+ switch (reg_grp) {
+ case IQS7222_REG_GRP_CYCLE:
+ return iqs7222->cycle_setup[row];
+
+ case IQS7222_REG_GRP_GLBL:
+ return iqs7222->glbl_setup;
+
+ case IQS7222_REG_GRP_BTN:
+ return iqs7222->btn_setup[row];
+
+ case IQS7222_REG_GRP_CHAN:
+ return iqs7222->chan_setup[row];
+
+ case IQS7222_REG_GRP_FILT:
+ return iqs7222->filt_setup;
+
+ case IQS7222_REG_GRP_SLDR:
+ return iqs7222->sldr_setup[row];
+
+ case IQS7222_REG_GRP_GPIO:
+ return iqs7222->gpio_setup[row];
+
+ case IQS7222_REG_GRP_SYS:
+ return iqs7222->sys_setup;
+
+ default:
+ return NULL;
+ }
+}
+
+static int iqs7222_irq_poll(struct iqs7222_private *iqs7222, u16 timeout_ms)
+{
+ ktime_t irq_timeout = ktime_add_ms(ktime_get(), timeout_ms);
+ int ret;
+
+ do {
+ usleep_range(1000, 1100);
+
+ ret = gpiod_get_value_cansleep(iqs7222->irq_gpio);
+ if (ret < 0)
+ return ret;
+ else if (ret > 0)
+ return 0;
+ } while (ktime_compare(ktime_get(), irq_timeout) < 0);
+
+ return -EBUSY;
+}
+
+static int iqs7222_hard_reset(struct iqs7222_private *iqs7222)
+{
+ struct i2c_client *client = iqs7222->client;
+ int error;
+
+ if (!iqs7222->reset_gpio)
+ return 0;
+
+ gpiod_set_value_cansleep(iqs7222->reset_gpio, 1);
+ usleep_range(1000, 1100);
+
+ gpiod_set_value_cansleep(iqs7222->reset_gpio, 0);
+
+ error = iqs7222_irq_poll(iqs7222, IQS7222_RESET_TIMEOUT_MS);
+ if (error)
+ dev_err(&client->dev, "Failed to reset device: %d\n", error);
+
+ return error;
+}
+
+static int iqs7222_force_comms(struct iqs7222_private *iqs7222)
+{
+ u8 msg_buf[] = { 0xFF, 0x00, };
+ int ret;
+
+ /*
+ * The device cannot communicate until it asserts its interrupt (RDY)
+ * pin. Attempts to do so while RDY is deasserted return an ACK; how-
+ * ever all write data is ignored, and all read data returns 0xEE.
+ *
+ * Unsolicited communication must be preceded by a special force com-
+ * munication command, after which the device eventually asserts its
+ * RDY pin and agrees to communicate.
+ *
+ * Regardless of whether communication is forced or the result of an
+ * interrupt, the device automatically deasserts its RDY pin once it
+ * detects an I2C stop condition, or a timeout expires.
+ */
+ ret = gpiod_get_value_cansleep(iqs7222->irq_gpio);
+ if (ret < 0)
+ return ret;
+ else if (ret > 0)
+ return 0;
+
+ ret = i2c_master_send(iqs7222->client, msg_buf, sizeof(msg_buf));
+ if (ret < (int)sizeof(msg_buf)) {
+ if (ret >= 0)
+ ret = -EIO;
+
+ /*
+ * The datasheet states that the host must wait to retry any
+ * failed attempt to communicate over I2C.
+ */
+ msleep(IQS7222_COMMS_RETRY_MS);
+ return ret;
+ }
+
+ return iqs7222_irq_poll(iqs7222, IQS7222_COMMS_TIMEOUT_MS);
+}
+
+static int iqs7222_read_burst(struct iqs7222_private *iqs7222,
+ u16 reg, void *val, u16 num_val)
+{
+ u8 reg_buf[sizeof(__be16)];
+ int ret, i;
+ struct i2c_client *client = iqs7222->client;
+ struct i2c_msg msg[] = {
+ {
+ .addr = client->addr,
+ .flags = 0,
+ .len = reg > U8_MAX ? sizeof(reg) : sizeof(u8),
+ .buf = reg_buf,
+ },
+ {
+ .addr = client->addr,
+ .flags = I2C_M_RD,
+ .len = num_val * sizeof(__le16),
+ .buf = (u8 *)val,
+ },
+ };
+
+ if (reg > U8_MAX)
+ put_unaligned_be16(reg, reg_buf);
+ else
+ *reg_buf = (u8)reg;
+
+ /*
+ * The following loop protects against an edge case in which the RDY
+ * pin is automatically deasserted just as the read is initiated. In
+ * that case, the read must be retried using forced communication.
+ */
+ for (i = 0; i < IQS7222_NUM_RETRIES; i++) {
+ ret = iqs7222_force_comms(iqs7222);
+ if (ret < 0)
+ continue;
+
+ ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+ if (ret < (int)ARRAY_SIZE(msg)) {
+ if (ret >= 0)
+ ret = -EIO;
+
+ msleep(IQS7222_COMMS_RETRY_MS);
+ continue;
+ }
+
+ if (get_unaligned_le16(msg[1].buf) == IQS7222_COMMS_ERROR) {
+ ret = -ENODATA;
+ continue;
+ }
+
+ ret = 0;
+ break;
+ }
+
+ /*
+ * The following delay ensures the device has deasserted the RDY pin
+ * following the I2C stop condition.
+ */
+ usleep_range(50, 100);
+
+ if (ret < 0)
+ dev_err(&client->dev,
+ "Failed to read from address 0x%04X: %d\n", reg, ret);
+
+ return ret;
+}
+
+static int iqs7222_read_word(struct iqs7222_private *iqs7222, u16 reg, u16 *val)
+{
+ __le16 val_buf;
+ int error;
+
+ error = iqs7222_read_burst(iqs7222, reg, &val_buf, 1);
+ if (error)
+ return error;
+
+ *val = le16_to_cpu(val_buf);
+
+ return 0;
+}
+
+static int iqs7222_write_burst(struct iqs7222_private *iqs7222,
+ u16 reg, const void *val, u16 num_val)
+{
+ int reg_len = reg > U8_MAX ? sizeof(reg) : sizeof(u8);
+ int val_len = num_val * sizeof(__le16);
+ int msg_len = reg_len + val_len;
+ int ret, i;
+ struct i2c_client *client = iqs7222->client;
+ u8 *msg_buf;
+
+ msg_buf = kzalloc(msg_len, GFP_KERNEL);
+ if (!msg_buf)
+ return -ENOMEM;
+
+ if (reg > U8_MAX)
+ put_unaligned_be16(reg, msg_buf);
+ else
+ *msg_buf = (u8)reg;
+
+ memcpy(msg_buf + reg_len, val, val_len);
+
+ /*
+ * The following loop protects against an edge case in which the RDY
+ * pin is automatically asserted just before the force communication
+ * command is sent.
+ *
+ * In that case, the subsequent I2C stop condition tricks the device
+ * into preemptively deasserting the RDY pin and the command must be
+ * sent again.
+ */
+ for (i = 0; i < IQS7222_NUM_RETRIES; i++) {
+ ret = iqs7222_force_comms(iqs7222);
+ if (ret < 0)
+ continue;
+
+ ret = i2c_master_send(client, msg_buf, msg_len);
+ if (ret < msg_len) {
+ if (ret >= 0)
+ ret = -EIO;
+
+ msleep(IQS7222_COMMS_RETRY_MS);
+ continue;
+ }
+
+ ret = 0;
+ break;
+ }
+
+ kfree(msg_buf);
+
+ usleep_range(50, 100);
+
+ if (ret < 0)
+ dev_err(&client->dev,
+ "Failed to write to address 0x%04X: %d\n", reg, ret);
+
+ return ret;
+}
+
+static int iqs7222_write_word(struct iqs7222_private *iqs7222, u16 reg, u16 val)
+{
+ __le16 val_buf = cpu_to_le16(val);
+
+ return iqs7222_write_burst(iqs7222, reg, &val_buf, 1);
+}
+
+static int iqs7222_ati_trigger(struct iqs7222_private *iqs7222)
+{
+ struct i2c_client *client = iqs7222->client;
+ ktime_t ati_timeout;
+ u16 sys_status = 0;
+ u16 sys_setup = iqs7222->sys_setup[0] & ~IQS7222_SYS_SETUP_ACK_RESET;
+ int error, i;
+
+ for (i = 0; i < IQS7222_NUM_RETRIES; i++) {
+ /*
+ * Trigger ATI from streaming and normal-power modes so that
+ * the RDY pin continues to be asserted during ATI.
+ */
+ error = iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP,
+ sys_setup |
+ IQS7222_SYS_SETUP_REDO_ATI);
+ if (error)
+ return error;
+
+ ati_timeout = ktime_add_ms(ktime_get(), IQS7222_ATI_TIMEOUT_MS);
+
+ do {
+ error = iqs7222_irq_poll(iqs7222,
+ IQS7222_COMMS_TIMEOUT_MS);
+ if (error)
+ continue;
+
+ error = iqs7222_read_word(iqs7222, IQS7222_SYS_STATUS,
+ &sys_status);
+ if (error)
+ return error;
+
+ if (sys_status & IQS7222_SYS_STATUS_ATI_ACTIVE)
+ continue;
+
+ if (sys_status & IQS7222_SYS_STATUS_ATI_ERROR)
+ break;
+
+ /*
+ * Use stream-in-touch mode if either slider reports
+ * absolute position.
+ */
+ sys_setup |= test_bit(EV_ABS, iqs7222->keypad->evbit)
+ ? IQS7222_SYS_SETUP_INTF_MODE_TOUCH
+ : IQS7222_SYS_SETUP_INTF_MODE_EVENT;
+ sys_setup |= IQS7222_SYS_SETUP_PWR_MODE_AUTO;
+
+ return iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP,
+ sys_setup);
+ } while (ktime_compare(ktime_get(), ati_timeout) < 0);
+
+ dev_err(&client->dev,
+ "ATI attempt %d of %d failed with status 0x%02X, %s\n",
+ i + 1, IQS7222_NUM_RETRIES, (u8)sys_status,
+ i < IQS7222_NUM_RETRIES ? "retrying..." : "stopping");
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int iqs7222_dev_init(struct iqs7222_private *iqs7222, int dir)
+{
+ const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+ int comms_offset = dev_desc->comms_offset;
+ int error, i, j, k;
+
+ /*
+ * Take advantage of the stop-bit disable function, if available, to
+ * save the trouble of having to reopen a communication window after
+ * each burst read or write.
+ */
+ if (comms_offset) {
+ u16 comms_setup;
+
+ error = iqs7222_read_word(iqs7222,
+ IQS7222_SYS_SETUP + comms_offset,
+ &comms_setup);
+ if (error)
+ return error;
+
+ error = iqs7222_write_word(iqs7222,
+ IQS7222_SYS_SETUP + comms_offset,
+ comms_setup | IQS7222_COMMS_HOLD);
+ if (error)
+ return error;
+ }
+
+ for (i = 0; i < IQS7222_NUM_REG_GRPS; i++) {
+ int num_row = dev_desc->reg_grps[i].num_row;
+ int num_col = dev_desc->reg_grps[i].num_col;
+ u16 reg = dev_desc->reg_grps[i].base;
+ __le16 *val_buf;
+ u16 *val;
+
+ if (!num_col)
+ continue;
+
+ val = iqs7222_setup(iqs7222, i, 0);
+ if (!val)
+ continue;
+
+ val_buf = kcalloc(num_col, sizeof(__le16), GFP_KERNEL);
+ if (!val_buf)
+ return -ENOMEM;
+
+ for (j = 0; j < num_row; j++) {
+ switch (dir) {
+ case READ:
+ error = iqs7222_read_burst(iqs7222, reg,
+ val_buf, num_col);
+ for (k = 0; k < num_col; k++)
+ val[k] = le16_to_cpu(val_buf[k]);
+ break;
+
+ case WRITE:
+ for (k = 0; k < num_col; k++)
+ val_buf[k] = cpu_to_le16(val[k]);
+ error = iqs7222_write_burst(iqs7222, reg,
+ val_buf, num_col);
+ break;
+
+ default:
+ error = -EINVAL;
+ }
+
+ if (error)
+ break;
+
+ reg += IQS7222_REG_OFFSET;
+ val += iqs7222_max_cols[i];
+ }
+
+ kfree(val_buf);
+
+ if (error)
+ return error;
+ }
+
+ if (comms_offset) {
+ u16 comms_setup;
+
+ error = iqs7222_read_word(iqs7222,
+ IQS7222_SYS_SETUP + comms_offset,
+ &comms_setup);
+ if (error)
+ return error;
+
+ error = iqs7222_write_word(iqs7222,
+ IQS7222_SYS_SETUP + comms_offset,
+ comms_setup & ~IQS7222_COMMS_HOLD);
+ if (error)
+ return error;
+ }
+
+ if (dir == READ)
+ return 0;
+
+ return iqs7222_ati_trigger(iqs7222);
+}
+
+static int iqs7222_dev_info(struct iqs7222_private *iqs7222)
+{
+ struct i2c_client *client = iqs7222->client;
+ bool prod_num_valid = false;
+ __le16 dev_id[3];
+ int error, i;
+
+ error = iqs7222_read_burst(iqs7222, IQS7222_PROD_NUM, dev_id,
+ ARRAY_SIZE(dev_id));
+ if (error)
+ return error;
+
+ for (i = 0; i < ARRAY_SIZE(iqs7222_devs); i++) {
+ if (le16_to_cpu(dev_id[0]) != iqs7222_devs[i].prod_num)
+ continue;
+
+ prod_num_valid = true;
+
+ if (le16_to_cpu(dev_id[1]) < iqs7222_devs[i].fw_major)
+ continue;
+
+ if (le16_to_cpu(dev_id[2]) < iqs7222_devs[i].fw_minor)
+ continue;
+
+ iqs7222->dev_desc = &iqs7222_devs[i];
+ return 0;
+ }
+
+ if (prod_num_valid)
+ dev_err(&client->dev, "Unsupported firmware revision: %u.%u\n",
+ le16_to_cpu(dev_id[1]), le16_to_cpu(dev_id[2]));
+ else
+ dev_err(&client->dev, "Unrecognized product number: %u\n",
+ le16_to_cpu(dev_id[0]));
+
+ return -EINVAL;
+}
+
+static int iqs7222_gpio_select(struct iqs7222_private *iqs7222,
+ struct fwnode_handle *child_node,
+ int child_enable, u16 child_link)
+{
+ const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+ struct i2c_client *client = iqs7222->client;
+ int num_gpio = dev_desc->reg_grps[IQS7222_REG_GRP_GPIO].num_row;
+ int error, count, i;
+ unsigned int gpio_sel[ARRAY_SIZE(iqs7222_gpio_links)];
+
+ if (!num_gpio)
+ return 0;
+
+ if (!fwnode_property_present(child_node, "azoteq,gpio-select"))
+ return 0;
+
+ count = fwnode_property_count_u32(child_node, "azoteq,gpio-select");
+ if (count > num_gpio) {
+ dev_err(&client->dev, "Invalid number of %s GPIOs\n",
+ fwnode_get_name(child_node));
+ return -EINVAL;
+ } else if (count < 0) {
+ dev_err(&client->dev, "Failed to count %s GPIOs: %d\n",
+ fwnode_get_name(child_node), count);
+ return count;
+ }
+
+ error = fwnode_property_read_u32_array(child_node,
+ "azoteq,gpio-select",
+ gpio_sel, count);
+ if (error) {
+ dev_err(&client->dev, "Failed to read %s GPIOs: %d\n",
+ fwnode_get_name(child_node), error);
+ return error;
+ }
+
+ for (i = 0; i < count; i++) {
+ u16 *gpio_setup;
+
+ if (gpio_sel[i] >= num_gpio) {
+ dev_err(&client->dev, "Invalid %s GPIO: %u\n",
+ fwnode_get_name(child_node), gpio_sel[i]);
+ return -EINVAL;
+ }
+
+ gpio_setup = iqs7222->gpio_setup[gpio_sel[i]];
+
+ if (gpio_setup[2] && child_link != gpio_setup[2]) {
+ dev_err(&client->dev,
+ "Conflicting GPIO %u event types\n",
+ gpio_sel[i]);
+ return -EINVAL;
+ }
+
+ gpio_setup[0] |= IQS7222_GPIO_SETUP_0_GPIO_EN;
+ gpio_setup[1] |= child_enable;
+ gpio_setup[2] = child_link;
+ }
+
+ return 0;
+}
+
+static int iqs7222_parse_props(struct iqs7222_private *iqs7222,
+ struct fwnode_handle **child_node,
+ int child_index,
+ enum iqs7222_reg_grp_id reg_grp,
+ enum iqs7222_reg_key_id reg_key)
+{
+ u16 *setup = iqs7222_setup(iqs7222, reg_grp, child_index);
+ struct i2c_client *client = iqs7222->client;
+ struct fwnode_handle *reg_grp_node;
+ char reg_grp_name[16];
+ int i;
+
+ switch (reg_grp) {
+ case IQS7222_REG_GRP_CYCLE:
+ case IQS7222_REG_GRP_CHAN:
+ case IQS7222_REG_GRP_SLDR:
+ case IQS7222_REG_GRP_GPIO:
+ case IQS7222_REG_GRP_BTN:
+ /*
+ * These groups derive a child node and return it to the caller
+ * for additional group-specific processing. In some cases, the
+ * child node may have already been derived.
+ */
+ reg_grp_node = *child_node;
+ if (reg_grp_node)
+ break;
+
+ snprintf(reg_grp_name, sizeof(reg_grp_name), "%s-%d",
+ iqs7222_reg_grp_names[reg_grp], child_index);
+
+ reg_grp_node = device_get_named_child_node(&client->dev,
+ reg_grp_name);
+ if (!reg_grp_node)
+ return 0;
+
+ *child_node = reg_grp_node;
+ break;
+
+ case IQS7222_REG_GRP_GLBL:
+ case IQS7222_REG_GRP_FILT:
+ case IQS7222_REG_GRP_SYS:
+ /*
+ * These groups are not organized beneath a child node, nor are
+ * they subject to any additional processing by the caller.
+ */
+ reg_grp_node = dev_fwnode(&client->dev);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(iqs7222_props); i++) {
+ const char *name = iqs7222_props[i].name;
+ int reg_offset = iqs7222_props[i].reg_offset;
+ int reg_shift = iqs7222_props[i].reg_shift;
+ int reg_width = iqs7222_props[i].reg_width;
+ int val_pitch = iqs7222_props[i].val_pitch ? : 1;
+ int val_min = iqs7222_props[i].val_min;
+ int val_max = iqs7222_props[i].val_max;
+ bool invert = iqs7222_props[i].invert;
+ const char *label = iqs7222_props[i].label ? : name;
+ unsigned int val;
+ int error;
+
+ if (iqs7222_props[i].reg_grp != reg_grp ||
+ iqs7222_props[i].reg_key != reg_key)
+ continue;
+
+ /*
+ * Boolean register fields are one bit wide; they are forcibly
+ * reset to provide a means to undo changes by a bootloader if
+ * necessary.
+ *
+ * Scalar fields, on the other hand, are left untouched unless
+ * their corresponding properties are present.
+ */
+ if (reg_width == 1) {
+ if (invert)
+ setup[reg_offset] |= BIT(reg_shift);
+ else
+ setup[reg_offset] &= ~BIT(reg_shift);
+ }
+
+ if (!fwnode_property_present(reg_grp_node, name))
+ continue;
+
+ if (reg_width == 1) {
+ if (invert)
+ setup[reg_offset] &= ~BIT(reg_shift);
+ else
+ setup[reg_offset] |= BIT(reg_shift);
+
+ continue;
+ }
+
+ error = fwnode_property_read_u32(reg_grp_node, name, &val);
+ if (error) {
+ dev_err(&client->dev, "Failed to read %s %s: %d\n",
+ fwnode_get_name(reg_grp_node), label, error);
+ return error;
+ }
+
+ if (!val_max)
+ val_max = GENMASK(reg_width - 1, 0) * val_pitch;
+
+ if (val < val_min || val > val_max) {
+ dev_err(&client->dev, "Invalid %s %s: %u\n",
+ fwnode_get_name(reg_grp_node), label, val);
+ return -EINVAL;
+ }
+
+ setup[reg_offset] &= ~GENMASK(reg_shift + reg_width - 1,
+ reg_shift);
+ setup[reg_offset] |= (val / val_pitch << reg_shift);
+ }
+
+ return 0;
+}
+
+static int iqs7222_parse_cycle(struct iqs7222_private *iqs7222, int cycle_index)
+{
+ u16 *cycle_setup = iqs7222->cycle_setup[cycle_index];
+ struct i2c_client *client = iqs7222->client;
+ struct fwnode_handle *cycle_node = NULL;
+ unsigned int pins[9];
+ int error, count, i;
+
+ /*
+ * Each channel shares a cycle with one other channel; the mapping of
+ * channels to cycles is fixed. Properties defined for a cycle impact
+ * both channels tied to the cycle.
+ */
+ error = iqs7222_parse_props(iqs7222, &cycle_node, cycle_index,
+ IQS7222_REG_GRP_CYCLE,
+ IQS7222_REG_KEY_NONE);
+ if (error)
+ return error;
+
+ if (!cycle_node)
+ return 0;
+
+ /*
+ * Unlike channels which are restricted to a select range of CRx pins
+ * based on channel number, any cycle can claim any of the device's 9
+ * CTx pins (CTx0-8).
+ */
+ if (!fwnode_property_present(cycle_node, "azoteq,tx-enable"))
+ return 0;
+
+ count = fwnode_property_count_u32(cycle_node, "azoteq,tx-enable");
+ if (count < 0) {
+ dev_err(&client->dev, "Failed to count %s CTx pins: %d\n",
+ fwnode_get_name(cycle_node), count);
+ return count;
+ } else if (count > ARRAY_SIZE(pins)) {
+ dev_err(&client->dev, "Invalid number of %s CTx pins\n",
+ fwnode_get_name(cycle_node));
+ return -EINVAL;
+ }
+
+ error = fwnode_property_read_u32_array(cycle_node, "azoteq,tx-enable",
+ pins, count);
+ if (error) {
+ dev_err(&client->dev, "Failed to read %s CTx pins: %d\n",
+ fwnode_get_name(cycle_node), error);
+ return error;
+ }
+
+ cycle_setup[1] &= ~GENMASK(7 + ARRAY_SIZE(pins) - 1, 7);
+
+ for (i = 0; i < count; i++) {
+ if (pins[i] > 8) {
+ dev_err(&client->dev, "Invalid %s CTx pin: %u\n",
+ fwnode_get_name(cycle_node), pins[i]);
+ return -EINVAL;
+ }
+
+ cycle_setup[1] |= BIT(pins[i] + 7);
+ }
+
+ return 0;
+}
+
+static int iqs7222_parse_chan(struct iqs7222_private *iqs7222, int chan_index)
+{
+ const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+ struct i2c_client *client = iqs7222->client;
+ struct fwnode_handle *chan_node = NULL;
+ int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
+ int ext_chan = rounddown(num_chan, 10);
+ int error, i;
+ u16 *chan_setup = iqs7222->chan_setup[chan_index];
+ u16 *sys_setup = iqs7222->sys_setup;
+ unsigned int val;
+
+ error = iqs7222_parse_props(iqs7222, &chan_node, chan_index,
+ IQS7222_REG_GRP_CHAN,
+ IQS7222_REG_KEY_NONE);
+ if (error)
+ return error;
+
+ if (!chan_node)
+ return 0;
+
+ if (dev_desc->allow_offset) {
+ sys_setup[dev_desc->allow_offset] |= BIT(chan_index);
+ if (fwnode_property_present(chan_node, "azoteq,ulp-allow"))
+ sys_setup[dev_desc->allow_offset] &= ~BIT(chan_index);
+ }
+
+ chan_setup[0] |= IQS7222_CHAN_SETUP_0_CHAN_EN;
+
+ /*
+ * The reference channel function allows for differential measurements
+ * and is only available in the case of IQS7222A or IQS7222C.
+ */
+ if (dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_col > 4 &&
+ fwnode_property_present(chan_node, "azoteq,ref-select")) {
+ u16 *ref_setup;
+
+ error = fwnode_property_read_u32(chan_node, "azoteq,ref-select",
+ &val);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to read %s reference channel: %d\n",
+ fwnode_get_name(chan_node), error);
+ return error;
+ }
+
+ if (val >= ext_chan) {
+ dev_err(&client->dev,
+ "Invalid %s reference channel: %u\n",
+ fwnode_get_name(chan_node), val);
+ return -EINVAL;
+ }
+
+ ref_setup = iqs7222->chan_setup[val];
+
+ /*
+ * Configure the current channel as a follower of the selected
+ * reference channel.
+ */
+ chan_setup[0] |= IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW;
+ chan_setup[4] = val * 42 + 1048;
+
+ if (!fwnode_property_read_u32(chan_node, "azoteq,ref-weight",
+ &val)) {
+ if (val > U16_MAX) {
+ dev_err(&client->dev,
+ "Invalid %s reference weight: %u\n",
+ fwnode_get_name(chan_node), val);
+ return -EINVAL;
+ }
+
+ chan_setup[5] = val;
+ }
+
+ /*
+ * Configure the selected channel as a reference channel which
+ * serves the current channel.
+ */
+ ref_setup[0] |= IQS7222_CHAN_SETUP_0_REF_MODE_REF;
+ ref_setup[5] |= BIT(chan_index);
+
+ ref_setup[4] = dev_desc->touch_link;
+ if (fwnode_property_present(chan_node, "azoteq,use-prox"))
+ ref_setup[4] -= 2;
+ }
+
+ if (fwnode_property_present(chan_node, "azoteq,rx-enable")) {
+ /*
+ * Each channel can claim up to 4 CRx pins. The first half of
+ * the channels can use CRx0-3, while the second half can use
+ * CRx4-7.
+ */
+ unsigned int pins[4];
+ int count;
+
+ count = fwnode_property_count_u32(chan_node,
+ "azoteq,rx-enable");
+ if (count < 0) {
+ dev_err(&client->dev,
+ "Failed to count %s CRx pins: %d\n",
+ fwnode_get_name(chan_node), count);
+ return count;
+ } else if (count > ARRAY_SIZE(pins)) {
+ dev_err(&client->dev,
+ "Invalid number of %s CRx pins\n",
+ fwnode_get_name(chan_node));
+ return -EINVAL;
+ }
+
+ error = fwnode_property_read_u32_array(chan_node,
+ "azoteq,rx-enable",
+ pins, count);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to read %s CRx pins: %d\n",
+ fwnode_get_name(chan_node), error);
+ return error;
+ }
+
+ chan_setup[0] &= ~GENMASK(4 + ARRAY_SIZE(pins) - 1, 4);
+
+ for (i = 0; i < count; i++) {
+ int min_crx = chan_index < ext_chan / 2 ? 0 : 4;
+
+ if (pins[i] < min_crx || pins[i] > min_crx + 3) {
+ dev_err(&client->dev,
+ "Invalid %s CRx pin: %u\n",
+ fwnode_get_name(chan_node), pins[i]);
+ return -EINVAL;
+ }
+
+ chan_setup[0] |= BIT(pins[i] + 4 - min_crx);
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(iqs7222_kp_events); i++) {
+ const char *event_name = iqs7222_kp_events[i].name;
+ u16 event_enable = iqs7222_kp_events[i].enable;
+ struct fwnode_handle *event_node;
+
+ event_node = fwnode_get_named_child_node(chan_node, event_name);
+ if (!event_node)
+ continue;
+
+ error = iqs7222_parse_props(iqs7222, &event_node, chan_index,
+ IQS7222_REG_GRP_BTN,
+ iqs7222_kp_events[i].reg_key);
+ if (error)
+ return error;
+
+ error = iqs7222_gpio_select(iqs7222, event_node,
+ BIT(chan_index),
+ dev_desc->touch_link - (i ? 0 : 2));
+ if (error)
+ return error;
+
+ if (!fwnode_property_read_u32(event_node,
+ "azoteq,timeout-press-ms",
+ &val)) {
+ /*
+ * The IQS7222B employs a global pair of press timeout
+ * registers as opposed to channel-specific registers.
+ */
+ u16 *setup = dev_desc->reg_grps
+ [IQS7222_REG_GRP_BTN].num_col > 2 ?
+ &iqs7222->btn_setup[chan_index][2] :
+ &sys_setup[9];
+
+ if (val > U8_MAX * 500) {
+ dev_err(&client->dev,
+ "Invalid %s press timeout: %u\n",
+ fwnode_get_name(chan_node), val);
+ return -EINVAL;
+ }
+
+ *setup &= ~(U8_MAX << i * 8);
+ *setup |= (val / 500 << i * 8);
+ }
+
+ error = fwnode_property_read_u32(event_node, "linux,code",
+ &val);
+ if (error) {
+ dev_err(&client->dev, "Failed to read %s code: %d\n",
+ fwnode_get_name(chan_node), error);
+ return error;
+ }
+
+ iqs7222->kp_code[chan_index][i] = val;
+ iqs7222->kp_type[chan_index][i] = EV_KEY;
+
+ if (fwnode_property_present(event_node, "linux,input-type")) {
+ error = fwnode_property_read_u32(event_node,
+ "linux,input-type",
+ &val);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to read %s input type: %d\n",
+ fwnode_get_name(chan_node), error);
+ return error;
+ }
+
+ if (val != EV_KEY && val != EV_SW) {
+ dev_err(&client->dev,
+ "Invalid %s input type: %u\n",
+ fwnode_get_name(chan_node), val);
+ return -EINVAL;
+ }
+
+ iqs7222->kp_type[chan_index][i] = val;
+ }
+
+ /*
+ * Reference channels can opt out of event reporting by using
+ * KEY_RESERVED in place of a true key or switch code.
+ */
+ if (iqs7222->kp_type[chan_index][i] == EV_KEY &&
+ iqs7222->kp_code[chan_index][i] == KEY_RESERVED)
+ continue;
+
+ input_set_capability(iqs7222->keypad,
+ iqs7222->kp_type[chan_index][i],
+ iqs7222->kp_code[chan_index][i]);
+
+ if (!dev_desc->event_offset)
+ continue;
+
+ sys_setup[dev_desc->event_offset] |= event_enable;
+ }
+
+ /*
+ * The following call handles a special pair of properties that apply
+ * to a channel node, but reside within the button (event) group.
+ */
+ return iqs7222_parse_props(iqs7222, &chan_node, chan_index,
+ IQS7222_REG_GRP_BTN,
+ IQS7222_REG_KEY_DEBOUNCE);
+}
+
+static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, int sldr_index)
+{
+ const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+ struct i2c_client *client = iqs7222->client;
+ struct fwnode_handle *sldr_node = NULL;
+ int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
+ int ext_chan = rounddown(num_chan, 10);
+ int count, error, reg_offset, i;
+ u16 *sldr_setup = iqs7222->sldr_setup[sldr_index];
+ u16 *sys_setup = iqs7222->sys_setup;
+ unsigned int chan_sel[4], val;
+
+ error = iqs7222_parse_props(iqs7222, &sldr_node, sldr_index,
+ IQS7222_REG_GRP_SLDR,
+ IQS7222_REG_KEY_NONE);
+ if (error)
+ return error;
+
+ if (!sldr_node)
+ return 0;
+
+ /*
+ * Each slider can be spread across 3 to 4 channels. It is possible to
+ * select only 2 channels, but doing so prevents the slider from using
+ * the specified resolution.
+ */
+ count = fwnode_property_count_u32(sldr_node, "azoteq,channel-select");
+ if (count < 0) {
+ dev_err(&client->dev, "Failed to count %s channels: %d\n",
+ fwnode_get_name(sldr_node), count);
+ return count;
+ } else if (count < 3 || count > ARRAY_SIZE(chan_sel)) {
+ dev_err(&client->dev, "Invalid number of %s channels\n",
+ fwnode_get_name(sldr_node));
+ return -EINVAL;
+ }
+
+ error = fwnode_property_read_u32_array(sldr_node,
+ "azoteq,channel-select",
+ chan_sel, count);
+ if (error) {
+ dev_err(&client->dev, "Failed to read %s channels: %d\n",
+ fwnode_get_name(sldr_node), error);
+ return error;
+ }
+
+ /*
+ * Resolution and top speed, if small enough, are packed into a single
+ * register. Otherwise, each occupies its own register and the rest of
+ * the slider-related register addresses are offset by one.
+ */
+ reg_offset = dev_desc->sldr_res < U16_MAX ? 0 : 1;
+
+ sldr_setup[0] |= count;
+ sldr_setup[3 + reg_offset] &= ~IQS7222_SLDR_SETUP_3_CHAN_SEL_MASK;
+
+ for (i = 0; i < ARRAY_SIZE(chan_sel); i++) {
+ sldr_setup[5 + reg_offset + i] = 0;
+ if (i >= count)
+ continue;
+
+ if (chan_sel[i] >= ext_chan) {
+ dev_err(&client->dev, "Invalid %s channel: %u\n",
+ fwnode_get_name(sldr_node), chan_sel[i]);
+ return -EINVAL;
+ }
+
+ /*
+ * The following fields indicate which channels participate in
+ * the slider, as well as each channel's relative placement.
+ */
+ sldr_setup[3 + reg_offset] |= BIT(chan_sel[i]);
+ sldr_setup[5 + reg_offset + i] = chan_sel[i] * 42 + 1080;
+ }
+
+ sldr_setup[4 + reg_offset] = dev_desc->touch_link;
+ if (fwnode_property_present(sldr_node, "azoteq,use-prox"))
+ sldr_setup[4 + reg_offset] -= 2;
+
+ if (!fwnode_property_read_u32(sldr_node, "azoteq,slider-size", &val)) {
+ if (!val || val > dev_desc->sldr_res) {
+ dev_err(&client->dev, "Invalid %s size: %u\n",
+ fwnode_get_name(sldr_node), val);
+ return -EINVAL;
+ }
+
+ if (reg_offset) {
+ sldr_setup[3] = val;
+ } else {
+ sldr_setup[2] &= ~IQS7222_SLDR_SETUP_2_RES_MASK;
+ sldr_setup[2] |= (val / 16 <<
+ IQS7222_SLDR_SETUP_2_RES_SHIFT);
+ }
+ }
+
+ if (!fwnode_property_read_u32(sldr_node, "azoteq,top-speed", &val)) {
+ if (val > (reg_offset ? U16_MAX : U8_MAX * 4)) {
+ dev_err(&client->dev, "Invalid %s top speed: %u\n",
+ fwnode_get_name(sldr_node), val);
+ return -EINVAL;
+ }
+
+ if (reg_offset) {
+ sldr_setup[2] = val;
+ } else {
+ sldr_setup[2] &= ~IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK;
+ sldr_setup[2] |= (val / 4);
+ }
+ }
+
+ if (!fwnode_property_read_u32(sldr_node, "linux,axis", &val)) {
+ u16 sldr_max = sldr_setup[3] - 1;
+
+ if (!reg_offset) {
+ sldr_max = sldr_setup[2];
+
+ sldr_max &= IQS7222_SLDR_SETUP_2_RES_MASK;
+ sldr_max >>= IQS7222_SLDR_SETUP_2_RES_SHIFT;
+
+ sldr_max = sldr_max * 16 - 1;
+ }
+
+ input_set_abs_params(iqs7222->keypad, val, 0, sldr_max, 0, 0);
+ iqs7222->sl_axis[sldr_index] = val;
+ }
+
+ if (dev_desc->wheel_enable) {
+ sldr_setup[0] &= ~dev_desc->wheel_enable;
+ if (iqs7222->sl_axis[sldr_index] == ABS_WHEEL)
+ sldr_setup[0] |= dev_desc->wheel_enable;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(iqs7222_sl_events); i++) {
+ const char *event_name = iqs7222_sl_events[i].name;
+ struct fwnode_handle *event_node;
+
+ /*
+ * The absence of a register offset means the remaining fields
+ * in the group represent gesture settings.
+ */
+ if (iqs7222_sl_events[i].enable && !reg_offset)
+ sldr_setup[9] &= ~iqs7222_sl_events[i].enable;
+
+ event_node = fwnode_get_named_child_node(sldr_node, event_name);
+ if (!event_node)
+ continue;
+
+ error = iqs7222_parse_props(iqs7222, &event_node, sldr_index,
+ IQS7222_REG_GRP_SLDR,
+ reg_offset ?
+ IQS7222_REG_KEY_RESERVED :
+ iqs7222_sl_events[i].reg_key);
+ if (error)
+ return error;
+
+ error = fwnode_property_read_u32(event_node, "linux,code",
+ &val);
+ if (error) {
+ dev_err(&client->dev, "Failed to read %s code: %d\n",
+ fwnode_get_name(sldr_node), error);
+ return error;
+ }
+
+ iqs7222->sl_code[sldr_index][i] = val;
+ input_set_capability(iqs7222->keypad, EV_KEY, val);
+
+ /*
+ * The press/release event is determined based on whether the
+ * coordinate field reports 0xFFFF and has no explicit enable
+ * control.
+ */
+ if (!iqs7222_sl_events[i].enable || reg_offset)
+ continue;
+
+ sldr_setup[9] |= iqs7222_sl_events[i].enable;
+
+ error = iqs7222_gpio_select(iqs7222, event_node,
+ iqs7222_sl_events[i].enable,
+ 1568 + sldr_index * 30);
+ if (error)
+ return error;
+
+ if (!dev_desc->event_offset)
+ continue;
+
+ sys_setup[dev_desc->event_offset] |= BIT(10 + sldr_index);
+ }
+
+ /*
+ * The following call handles a special pair of properties that shift
+ * to make room for a wheel enable control in the case of IQS7222C.
+ */
+ return iqs7222_parse_props(iqs7222, &sldr_node, sldr_index,
+ IQS7222_REG_GRP_SLDR,
+ dev_desc->wheel_enable ?
+ IQS7222_REG_KEY_WHEEL :
+ IQS7222_REG_KEY_NO_WHEEL);
+}
+
+static int iqs7222_parse_all(struct iqs7222_private *iqs7222)
+{
+ const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+ const struct iqs7222_reg_grp_desc *reg_grps = dev_desc->reg_grps;
+ u16 *sys_setup = iqs7222->sys_setup;
+ int error, i;
+
+ if (dev_desc->event_offset)
+ sys_setup[dev_desc->event_offset] = IQS7222_EVENT_MASK_ATI;
+
+ for (i = 0; i < reg_grps[IQS7222_REG_GRP_CYCLE].num_row; i++) {
+ error = iqs7222_parse_cycle(iqs7222, i);
+ if (error)
+ return error;
+ }
+
+ error = iqs7222_parse_props(iqs7222, NULL, 0, IQS7222_REG_GRP_GLBL,
+ IQS7222_REG_KEY_NONE);
+ if (error)
+ return error;
+
+ for (i = 0; i < reg_grps[IQS7222_REG_GRP_GPIO].num_row; i++) {
+ struct fwnode_handle *gpio_node = NULL;
+ u16 *gpio_setup = iqs7222->gpio_setup[i];
+ int j;
+
+ gpio_setup[0] &= ~IQS7222_GPIO_SETUP_0_GPIO_EN;
+ gpio_setup[1] = 0;
+ gpio_setup[2] = 0;
+
+ error = iqs7222_parse_props(iqs7222, &gpio_node, i,
+ IQS7222_REG_GRP_GPIO,
+ IQS7222_REG_KEY_NONE);
+ if (error)
+ return error;
+
+ if (reg_grps[IQS7222_REG_GRP_GPIO].num_row == 1)
+ continue;
+
+ /*
+ * The IQS7222C exposes multiple GPIO and must be informed
+ * as to which GPIO this group represents.
+ */
+ for (j = 0; j < ARRAY_SIZE(iqs7222_gpio_links); j++)
+ gpio_setup[0] &= ~BIT(iqs7222_gpio_links[j]);
+
+ gpio_setup[0] |= BIT(iqs7222_gpio_links[i]);
+ }
+
+ for (i = 0; i < reg_grps[IQS7222_REG_GRP_CHAN].num_row; i++) {
+ u16 *chan_setup = iqs7222->chan_setup[i];
+
+ chan_setup[0] &= ~IQS7222_CHAN_SETUP_0_REF_MODE_MASK;
+ chan_setup[0] &= ~IQS7222_CHAN_SETUP_0_CHAN_EN;
+
+ chan_setup[5] = 0;
+ }
+
+ for (i = 0; i < reg_grps[IQS7222_REG_GRP_CHAN].num_row; i++) {
+ error = iqs7222_parse_chan(iqs7222, i);
+ if (error)
+ return error;
+ }
+
+ error = iqs7222_parse_props(iqs7222, NULL, 0, IQS7222_REG_GRP_FILT,
+ IQS7222_REG_KEY_NONE);
+ if (error)
+ return error;
+
+ for (i = 0; i < reg_grps[IQS7222_REG_GRP_SLDR].num_row; i++) {
+ u16 *sldr_setup = iqs7222->sldr_setup[i];
+
+ sldr_setup[0] &= ~IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK;
+
+ error = iqs7222_parse_sldr(iqs7222, i);
+ if (error)
+ return error;
+ }
+
+ sys_setup[0] &= ~IQS7222_SYS_SETUP_INTF_MODE_MASK;
+ sys_setup[0] &= ~IQS7222_SYS_SETUP_PWR_MODE_MASK;
+
+ sys_setup[0] |= IQS7222_SYS_SETUP_ACK_RESET;
+
+ return iqs7222_parse_props(iqs7222, NULL, 0, IQS7222_REG_GRP_SYS,
+ IQS7222_REG_KEY_NONE);
+}
+
+static int iqs7222_report(struct iqs7222_private *iqs7222)
+{
+ const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc;
+ struct i2c_client *client = iqs7222->client;
+ int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
+ int num_stat = dev_desc->reg_grps[IQS7222_REG_GRP_STAT].num_col;
+ int error, i, j;
+ __le16 status[IQS7222_MAX_COLS_STAT];
+
+ error = iqs7222_read_burst(iqs7222, IQS7222_SYS_STATUS, status,
+ num_stat);
+ if (error)
+ return error;
+
+ if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_RESET) {
+ dev_err(&client->dev, "Unexpected device reset\n");
+ return iqs7222_dev_init(iqs7222, WRITE);
+ }
+
+ if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_ATI_ERROR) {
+ dev_err(&client->dev, "Unexpected ATI error\n");
+ return iqs7222_ati_trigger(iqs7222);
+ }
+
+ if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_ATI_ACTIVE)
+ return 0;
+
+ for (i = 0; i < num_chan; i++) {
+ u16 *chan_setup = iqs7222->chan_setup[i];
+
+ if (!(chan_setup[0] & IQS7222_CHAN_SETUP_0_CHAN_EN))
+ continue;
+
+ for (j = 0; j < ARRAY_SIZE(iqs7222_kp_events); j++) {
+ /*
+ * Proximity state begins at offset 2 and spills into
+ * offset 3 for devices with more than 16 channels.
+ *
+ * Touch state begins at the first offset immediately
+ * following proximity state.
+ */
+ int k = 2 + j * (num_chan > 16 ? 2 : 1);
+ u16 state = le16_to_cpu(status[k + i / 16]);
+
+ input_event(iqs7222->keypad,
+ iqs7222->kp_type[i][j],
+ iqs7222->kp_code[i][j],
+ !!(state & BIT(i % 16)));
+ }
+ }
+
+ for (i = 0; i < dev_desc->reg_grps[IQS7222_REG_GRP_SLDR].num_row; i++) {
+ u16 *sldr_setup = iqs7222->sldr_setup[i];
+ u16 sldr_pos = le16_to_cpu(status[4 + i]);
+ u16 state = le16_to_cpu(status[6 + i]);
+
+ if (!(sldr_setup[0] & IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK))
+ continue;
+
+ if (sldr_pos < dev_desc->sldr_res)
+ input_report_abs(iqs7222->keypad, iqs7222->sl_axis[i],
+ sldr_pos);
+
+ for (j = 0; j < ARRAY_SIZE(iqs7222_sl_events); j++) {
+ u16 mask = iqs7222_sl_events[j].mask;
+ u16 val = iqs7222_sl_events[j].val;
+
+ if (!iqs7222_sl_events[j].enable) {
+ input_report_key(iqs7222->keypad,
+ iqs7222->sl_code[i][j],
+ sldr_pos < dev_desc->sldr_res);
+ continue;
+ }
+
+ /*
+ * The remaining offsets represent gesture state, and
+ * are discarded in the case of IQS7222C because only
+ * absolute position is reported.
+ */
+ if (num_stat < IQS7222_MAX_COLS_STAT)
+ continue;
+
+ input_report_key(iqs7222->keypad,
+ iqs7222->sl_code[i][j],
+ (state & mask) == val);
+ }
+ }
+
+ input_sync(iqs7222->keypad);
+
+ return 0;
+}
+
+static irqreturn_t iqs7222_irq(int irq, void *context)
+{
+ struct iqs7222_private *iqs7222 = context;
+
+ return iqs7222_report(iqs7222) ? IRQ_NONE : IRQ_HANDLED;
+}
+
+static int iqs7222_probe(struct i2c_client *client)
+{
+ struct iqs7222_private *iqs7222;
+ unsigned long irq_flags;
+ int error, irq;
+
+ iqs7222 = devm_kzalloc(&client->dev, sizeof(*iqs7222), GFP_KERNEL);
+ if (!iqs7222)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, iqs7222);
+ iqs7222->client = client;
+
+ iqs7222->keypad = devm_input_allocate_device(&client->dev);
+ if (!iqs7222->keypad)
+ return -ENOMEM;
+
+ iqs7222->keypad->name = client->name;
+ iqs7222->keypad->id.bustype = BUS_I2C;
+
+ /*
+ * The RDY pin behaves as an interrupt, but must also be polled ahead
+ * of unsolicited I2C communication. As such, it is first opened as a
+ * GPIO and then passed to gpiod_to_irq() to register the interrupt.
+ */
+ iqs7222->irq_gpio = devm_gpiod_get(&client->dev, "irq", GPIOD_IN);
+ if (IS_ERR(iqs7222->irq_gpio)) {
+ error = PTR_ERR(iqs7222->irq_gpio);
+ dev_err(&client->dev, "Failed to request IRQ GPIO: %d\n",
+ error);
+ return error;
+ }
+
+ iqs7222->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(iqs7222->reset_gpio)) {
+ error = PTR_ERR(iqs7222->reset_gpio);
+ dev_err(&client->dev, "Failed to request reset GPIO: %d\n",
+ error);
+ return error;
+ }
+
+ error = iqs7222_hard_reset(iqs7222);
+ if (error)
+ return error;
+
+ error = iqs7222_dev_info(iqs7222);
+ if (error)
+ return error;
+
+ error = iqs7222_dev_init(iqs7222, READ);
+ if (error)
+ return error;
+
+ error = iqs7222_parse_all(iqs7222);
+ if (error)
+ return error;
+
+ error = iqs7222_dev_init(iqs7222, WRITE);
+ if (error)
+ return error;
+
+ error = iqs7222_report(iqs7222);
+ if (error)
+ return error;
+
+ error = input_register_device(iqs7222->keypad);
+ if (error) {
+ dev_err(&client->dev, "Failed to register device: %d\n", error);
+ return error;
+ }
+
+ irq = gpiod_to_irq(iqs7222->irq_gpio);
+ if (irq < 0)
+ return irq;
+
+ irq_flags = gpiod_is_active_low(iqs7222->irq_gpio) ? IRQF_TRIGGER_LOW
+ : IRQF_TRIGGER_HIGH;
+ irq_flags |= IRQF_ONESHOT;
+
+ error = devm_request_threaded_irq(&client->dev, irq, NULL, iqs7222_irq,
+ irq_flags, client->name, iqs7222);
+ if (error)
+ dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+
+ return error;
+}
+
+static const struct of_device_id iqs7222_of_match[] = {
+ { .compatible = "azoteq,iqs7222a" },
+ { .compatible = "azoteq,iqs7222b" },
+ { .compatible = "azoteq,iqs7222c" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, iqs7222_of_match);
+
+static struct i2c_driver iqs7222_i2c_driver = {
+ .driver = {
+ .name = "iqs7222",
+ .of_match_table = iqs7222_of_match,
+ },
+ .probe_new = iqs7222_probe,
+};
+module_i2c_driver(iqs7222_i2c_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS7222A/B/C Capacitive Touch Controller");
+MODULE_LICENSE("GPL");
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
+#include <linux/ktime.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#define PON_REV2 0x01
+#define PON_SUBTYPE 0x05
+
+#define PON_SUBTYPE_PRIMARY 0x01
+#define PON_SUBTYPE_SECONDARY 0x02
+#define PON_SUBTYPE_1REG 0x03
+#define PON_SUBTYPE_GEN2_PRIMARY 0x04
+#define PON_SUBTYPE_GEN2_SECONDARY 0x05
+#define PON_SUBTYPE_GEN3_PBS 0x08
+#define PON_SUBTYPE_GEN3_HLOS 0x09
+
#define PON_RT_STS 0x10
#define PON_KPDPWR_N_SET BIT(0)
#define PON_RESIN_N_SET BIT(1)
unsigned int status_bit;
bool supports_ps_hold_poff_config;
bool supports_debounce_config;
+ bool has_pon_pbs;
const char *name;
const char *phys;
};
struct device *dev;
int irq;
u32 baseaddr;
+ u32 pon_pbs_baseaddr;
struct regmap *regmap;
struct input_dev *input;
unsigned int revision;
+ unsigned int subtype;
struct notifier_block reboot_notifier;
u32 code;
+ u32 sw_debounce_time_us;
+ ktime_t sw_debounce_end_time;
+ bool last_status;
const struct pm8941_data *data;
};
{
struct pm8941_pwrkey *pwrkey = _data;
unsigned int sts;
- int error;
+ int err;
+
+ if (pwrkey->sw_debounce_time_us) {
+ if (ktime_before(ktime_get(), pwrkey->sw_debounce_end_time)) {
+ dev_dbg(pwrkey->dev,
+ "ignoring key event received before debounce end %llu us\n",
+ pwrkey->sw_debounce_end_time);
+ return IRQ_HANDLED;
+ }
+ }
- error = regmap_read(pwrkey->regmap,
- pwrkey->baseaddr + PON_RT_STS, &sts);
- if (error)
+ err = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_RT_STS, &sts);
+ if (err)
return IRQ_HANDLED;
- input_report_key(pwrkey->input, pwrkey->code,
- sts & pwrkey->data->status_bit);
+ sts &= pwrkey->data->status_bit;
+
+ if (pwrkey->sw_debounce_time_us && !sts)
+ pwrkey->sw_debounce_end_time = ktime_add_us(ktime_get(),
+ pwrkey->sw_debounce_time_us);
+
+ /*
+ * Simulate a press event in case a release event occurred without a
+ * corresponding press event.
+ */
+ if (!pwrkey->last_status && !sts) {
+ input_report_key(pwrkey->input, pwrkey->code, 1);
+ input_sync(pwrkey->input);
+ }
+ pwrkey->last_status = sts;
+
+ input_report_key(pwrkey->input, pwrkey->code, sts);
input_sync(pwrkey->input);
return IRQ_HANDLED;
}
+static int pm8941_pwrkey_sw_debounce_init(struct pm8941_pwrkey *pwrkey)
+{
+ unsigned int val, addr, mask;
+ int error;
+
+ if (pwrkey->data->has_pon_pbs && !pwrkey->pon_pbs_baseaddr) {
+ dev_err(pwrkey->dev,
+ "PON_PBS address missing, can't read HW debounce time\n");
+ return 0;
+ }
+
+ if (pwrkey->pon_pbs_baseaddr)
+ addr = pwrkey->pon_pbs_baseaddr + PON_DBC_CTL;
+ else
+ addr = pwrkey->baseaddr + PON_DBC_CTL;
+ error = regmap_read(pwrkey->regmap, addr, &val);
+ if (error)
+ return error;
+
+ if (pwrkey->subtype >= PON_SUBTYPE_GEN2_PRIMARY)
+ mask = 0xf;
+ else
+ mask = 0x7;
+
+ pwrkey->sw_debounce_time_us =
+ 2 * USEC_PER_SEC / (1 << (mask - (val & mask)));
+
+ dev_dbg(pwrkey->dev, "SW debounce time = %u us\n",
+ pwrkey->sw_debounce_time_us);
+
+ return 0;
+}
+
static int __maybe_unused pm8941_pwrkey_suspend(struct device *dev)
{
struct pm8941_pwrkey *pwrkey = dev_get_drvdata(dev);
struct pm8941_pwrkey *pwrkey;
bool pull_up;
struct device *parent;
+ struct device_node *regmap_node;
+ const __be32 *addr;
u32 req_delay;
int error;
pwrkey->data = of_device_get_match_data(&pdev->dev);
parent = pdev->dev.parent;
+ regmap_node = pdev->dev.of_node;
pwrkey->regmap = dev_get_regmap(parent, NULL);
if (!pwrkey->regmap) {
+ regmap_node = parent->of_node;
/*
* We failed to get regmap for parent. Let's see if we are
* a child of pon node and read regmap and reg from its
dev_err(&pdev->dev, "failed to locate regmap\n");
return -ENODEV;
}
+ }
- error = of_property_read_u32(parent->of_node,
- "reg", &pwrkey->baseaddr);
- } else {
- error = of_property_read_u32(pdev->dev.of_node, "reg",
- &pwrkey->baseaddr);
+ addr = of_get_address(regmap_node, 0, NULL, NULL);
+ if (!addr) {
+ dev_err(&pdev->dev, "reg property missing\n");
+ return -EINVAL;
+ }
+ pwrkey->baseaddr = be32_to_cpup(addr);
+
+ if (pwrkey->data->has_pon_pbs) {
+ /* PON_PBS base address is optional */
+ addr = of_get_address(regmap_node, 1, NULL, NULL);
+ if (addr)
+ pwrkey->pon_pbs_baseaddr = be32_to_cpup(addr);
}
- if (error)
- return error;
pwrkey->irq = platform_get_irq(pdev, 0);
if (pwrkey->irq < 0)
error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_REV2,
&pwrkey->revision);
if (error) {
- dev_err(&pdev->dev, "failed to set debounce: %d\n", error);
+ dev_err(&pdev->dev, "failed to read revision: %d\n", error);
+ return error;
+ }
+
+ error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_SUBTYPE,
+ &pwrkey->subtype);
+ if (error) {
+ dev_err(&pdev->dev, "failed to read subtype: %d\n", error);
return error;
}
}
}
+ error = pm8941_pwrkey_sw_debounce_init(pwrkey);
+ if (error)
+ return error;
+
if (pwrkey->data->pull_up_bit) {
error = regmap_update_bits(pwrkey->regmap,
pwrkey->baseaddr + PON_PULL_CTL,
.phys = "pm8941_pwrkey/input0",
.supports_ps_hold_poff_config = true,
.supports_debounce_config = true,
+ .has_pon_pbs = false,
};
static const struct pm8941_data resin_data = {
.phys = "pm8941_resin/input0",
.supports_ps_hold_poff_config = true,
.supports_debounce_config = true,
+ .has_pon_pbs = false,
};
static const struct pm8941_data pon_gen3_pwrkey_data = {
.phys = "pmic_pwrkey/input0",
.supports_ps_hold_poff_config = false,
.supports_debounce_config = false,
+ .has_pon_pbs = true,
};
static const struct pm8941_data pon_gen3_resin_data = {
.phys = "pmic_resin/input0",
.supports_ps_hold_poff_config = false,
.supports_debounce_config = false,
+ .has_pon_pbs = true,
};
static const struct of_device_id pm8941_pwr_key_id_table[] = {
info = &state->u.bbc;
info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0);
+ of_node_put(dp);
if (!info->clock_freq)
goto out_free;
static LIST_HEAD(psmouse_smbus_list);
static DEFINE_MUTEX(psmouse_smbus_mutex);
+static struct workqueue_struct *psmouse_smbus_wq;
+
static void psmouse_smbus_check_adapter(struct i2c_adapter *adapter)
{
struct psmouse_smbus_dev *smbdev;
INIT_WORK(&rwork->work, psmouse_smbus_remove_i2c_device);
rwork->client = client;
- schedule_work(&rwork->work);
+ queue_work(psmouse_smbus_wq, &rwork->work);
}
}
{
int error;
+ psmouse_smbus_wq = alloc_workqueue("psmouse-smbus", 0, 0);
+ if (!psmouse_smbus_wq)
+ return -ENOMEM;
+
error = bus_register_notifier(&i2c_bus_type, &psmouse_smbus_notifier);
if (error) {
pr_err("failed to register i2c bus notifier: %d\n", error);
+ destroy_workqueue(psmouse_smbus_wq);
return error;
}
void psmouse_smbus_module_exit(void)
{
bus_unregister_notifier(&i2c_bus_type, &psmouse_smbus_notifier);
- flush_scheduled_work();
+ destroy_workqueue(psmouse_smbus_wq);
}
"LEN2044", /* L470 */
"LEN2054", /* E480 */
"LEN2055", /* E580 */
+ "LEN2064", /* T14 Gen 1 AMD / P14s Gen 1 AMD */
"LEN2068", /* T14 Gen 1 */
"SYN3052", /* HP EliteBook 840 G4 */
"SYN3221", /* HP 15-ay000 */
return 0;
}
+/**
+ * vmmouse_reset - Disable vmmouse and reset
+ *
+ * @psmouse: Pointer to the psmouse struct
+ *
+ * Tries to disable vmmouse mode before enter suspend.
+ */
+static void vmmouse_reset(struct psmouse *psmouse)
+{
+ vmmouse_disable(psmouse);
+ psmouse_reset(psmouse);
+}
+
/**
* vmmouse_disconnect - Take down vmmouse driver
*
psmouse->protocol_handler = vmmouse_process_byte;
psmouse->disconnect = vmmouse_disconnect;
psmouse->reconnect = vmmouse_reconnect;
+ psmouse->cleanup = vmmouse_reset;
return 0;
v4l2_device_unregister(&f54->v4l2);
remove_wq:
cancel_delayed_work_sync(&f54->work);
- flush_workqueue(f54->workqueue);
destroy_workqueue(f54->workqueue);
return ret;
}
#include <linux/of.h>
#include <linux/jiffies.h>
#include <linux/delay.h>
+#include <linux/timekeeping.h>
#define DRIVER_NAME "ps2-gpio"
#define PS2_DATA_BIT7 8
#define PS2_PARITY_BIT 9
#define PS2_STOP_BIT 10
-#define PS2_TX_TIMEOUT 11
-#define PS2_ACK_BIT 12
+#define PS2_ACK_BIT 11
#define PS2_DEV_RET_ACK 0xfa
#define PS2_DEV_RET_NACK 0xfe
#define PS2_CMD_RESEND 0xfe
+/*
+ * The PS2 protocol specifies a clock frequency between 10kHz and 16.7kHz,
+ * therefore the maximal interrupt interval should be 100us and the minimum
+ * interrupt interval should be ~60us. Let's allow +/- 20us for frequency
+ * deviations and interrupt latency.
+ *
+ * The data line must be samples after ~30us to 50us after the falling edge,
+ * since the device updates the data line at the rising edge.
+ *
+ * ___ ______ ______ ______ ___
+ * \ / \ / \ / \ /
+ * \ / \ / \ / \ /
+ * \______/ \______/ \______/ \______/
+ *
+ * |-----------------| |--------|
+ * 60us/100us 30us/50us
+ */
+#define PS2_CLK_FREQ_MIN_HZ 10000
+#define PS2_CLK_FREQ_MAX_HZ 16700
+#define PS2_CLK_MIN_INTERVAL_US ((1000 * 1000) / PS2_CLK_FREQ_MAX_HZ)
+#define PS2_CLK_MAX_INTERVAL_US ((1000 * 1000) / PS2_CLK_FREQ_MIN_HZ)
+#define PS2_IRQ_MIN_INTERVAL_US (PS2_CLK_MIN_INTERVAL_US - 20)
+#define PS2_IRQ_MAX_INTERVAL_US (PS2_CLK_MAX_INTERVAL_US + 20)
+
struct ps2_gpio_data {
struct device *dev;
struct serio *serio;
struct gpio_desc *gpio_data;
bool write_enable;
int irq;
- unsigned char rx_cnt;
- unsigned char rx_byte;
- unsigned char tx_cnt;
- unsigned char tx_byte;
- struct completion tx_done;
- struct mutex tx_mutex;
- struct delayed_work tx_work;
+ ktime_t t_irq_now;
+ ktime_t t_irq_last;
+ struct {
+ unsigned char cnt;
+ unsigned char byte;
+ } rx;
+ struct {
+ unsigned char cnt;
+ unsigned char byte;
+ ktime_t t_xfer_start;
+ ktime_t t_xfer_end;
+ struct completion complete;
+ struct mutex mutex;
+ struct delayed_work work;
+ } tx;
};
static int ps2_gpio_open(struct serio *serio)
{
struct ps2_gpio_data *drvdata = serio->port_data;
+ drvdata->t_irq_last = 0;
+ drvdata->tx.t_xfer_end = 0;
+
enable_irq(drvdata->irq);
return 0;
}
{
struct ps2_gpio_data *drvdata = serio->port_data;
- flush_delayed_work(&drvdata->tx_work);
+ flush_delayed_work(&drvdata->tx.work);
disable_irq(drvdata->irq);
}
gpiod_direction_output(drvdata->gpio_clk, 0);
drvdata->mode = PS2_MODE_TX;
- drvdata->tx_byte = val;
+ drvdata->tx.byte = val;
- schedule_delayed_work(&drvdata->tx_work, usecs_to_jiffies(200));
+ schedule_delayed_work(&drvdata->tx.work, usecs_to_jiffies(200));
return 0;
}
int ret = 0;
if (in_task()) {
- mutex_lock(&drvdata->tx_mutex);
+ mutex_lock(&drvdata->tx.mutex);
__ps2_gpio_write(serio, val);
- if (!wait_for_completion_timeout(&drvdata->tx_done,
+ if (!wait_for_completion_timeout(&drvdata->tx.complete,
msecs_to_jiffies(10000)))
ret = SERIO_TIMEOUT;
- mutex_unlock(&drvdata->tx_mutex);
+ mutex_unlock(&drvdata->tx.mutex);
} else {
__ps2_gpio_write(serio, val);
}
{
struct delayed_work *dwork = to_delayed_work(work);
struct ps2_gpio_data *drvdata = container_of(dwork,
- struct ps2_gpio_data,
- tx_work);
+ struct ps2_gpio_data,
+ tx.work);
+ drvdata->tx.t_xfer_start = ktime_get();
enable_irq(drvdata->irq);
gpiod_direction_output(drvdata->gpio_data, 0);
gpiod_direction_input(drvdata->gpio_clk);
unsigned char byte, cnt;
int data;
int rxflags = 0;
- static unsigned long old_jiffies;
+ s64 us_delta;
- byte = drvdata->rx_byte;
- cnt = drvdata->rx_cnt;
+ byte = drvdata->rx.byte;
+ cnt = drvdata->rx.cnt;
- if (old_jiffies == 0)
- old_jiffies = jiffies;
+ drvdata->t_irq_now = ktime_get();
+
+ /*
+ * We need to consider spurious interrupts happening right after
+ * a TX xfer finished.
+ */
+ us_delta = ktime_us_delta(drvdata->t_irq_now, drvdata->tx.t_xfer_end);
+ if (unlikely(us_delta < PS2_IRQ_MIN_INTERVAL_US))
+ goto end;
- if ((jiffies - old_jiffies) > usecs_to_jiffies(100)) {
+ us_delta = ktime_us_delta(drvdata->t_irq_now, drvdata->t_irq_last);
+ if (us_delta > PS2_IRQ_MAX_INTERVAL_US && cnt) {
dev_err(drvdata->dev,
"RX: timeout, probably we missed an interrupt\n");
goto err;
+ } else if (unlikely(us_delta < PS2_IRQ_MIN_INTERVAL_US)) {
+ /* Ignore spurious IRQs. */
+ goto end;
}
- old_jiffies = jiffies;
+ drvdata->t_irq_last = drvdata->t_irq_now;
data = gpiod_get_value(drvdata->gpio_data);
if (unlikely(data < 0)) {
if (!drvdata->write_enable)
goto err;
}
+ break;
+ case PS2_STOP_BIT:
+ /* stop bit should be high */
+ if (unlikely(!data)) {
+ dev_err(drvdata->dev, "RX: stop bit should be high\n");
+ goto err;
+ }
- /* Do not send spurious ACK's and NACK's when write fn is
+ /*
+ * Do not send spurious ACK's and NACK's when write fn is
* not provided.
*/
if (!drvdata->write_enable) {
break;
}
- /* Let's send the data without waiting for the stop bit to be
- * sent. It may happen that we miss the stop bit. When this
- * happens we have no way to recover from this, certainly
- * missing the parity bit would be recognized when processing
- * the stop bit. When missing both, data is lost.
- */
serio_interrupt(drvdata->serio, byte, rxflags);
dev_dbg(drvdata->dev, "RX: sending byte 0x%x\n", byte);
- break;
- case PS2_STOP_BIT:
- /* stop bit should be high */
- if (unlikely(!data)) {
- dev_err(drvdata->dev, "RX: stop bit should be high\n");
- goto err;
- }
+
cnt = byte = 0;
- old_jiffies = 0;
+
goto end; /* success */
default:
dev_err(drvdata->dev, "RX: got out of sync with the device\n");
err:
cnt = byte = 0;
- old_jiffies = 0;
__ps2_gpio_write(drvdata->serio, PS2_CMD_RESEND);
end:
- drvdata->rx_cnt = cnt;
- drvdata->rx_byte = byte;
+ drvdata->rx.cnt = cnt;
+ drvdata->rx.byte = byte;
return IRQ_HANDLED;
}
{
unsigned char byte, cnt;
int data;
- static unsigned long old_jiffies;
+ s64 us_delta;
+
+ cnt = drvdata->tx.cnt;
+ byte = drvdata->tx.byte;
- cnt = drvdata->tx_cnt;
- byte = drvdata->tx_byte;
+ drvdata->t_irq_now = ktime_get();
- if (old_jiffies == 0)
- old_jiffies = jiffies;
+ /*
+ * There might be pending IRQs since we disabled IRQs in
+ * __ps2_gpio_write(). We can expect at least one clock period until
+ * the device generates the first falling edge after releasing the
+ * clock line.
+ */
+ us_delta = ktime_us_delta(drvdata->t_irq_now,
+ drvdata->tx.t_xfer_start);
+ if (unlikely(us_delta < PS2_CLK_MIN_INTERVAL_US))
+ goto end;
- if ((jiffies - old_jiffies) > usecs_to_jiffies(100)) {
+ us_delta = ktime_us_delta(drvdata->t_irq_now, drvdata->t_irq_last);
+ if (us_delta > PS2_IRQ_MAX_INTERVAL_US && cnt > 1) {
dev_err(drvdata->dev,
"TX: timeout, probably we missed an interrupt\n");
goto err;
+ } else if (unlikely(us_delta < PS2_IRQ_MIN_INTERVAL_US)) {
+ /* Ignore spurious IRQs. */
+ goto end;
}
- old_jiffies = jiffies;
+ drvdata->t_irq_last = drvdata->t_irq_now;
switch (cnt) {
case PS2_START_BIT:
/* release data line to generate stop bit */
gpiod_direction_input(drvdata->gpio_data);
break;
- case PS2_TX_TIMEOUT:
- /* Devices generate one extra clock pulse before sending the
- * acknowledgment.
- */
- break;
case PS2_ACK_BIT:
- gpiod_direction_input(drvdata->gpio_data);
data = gpiod_get_value(drvdata->gpio_data);
if (data) {
dev_warn(drvdata->dev, "TX: received NACK, retry\n");
goto err;
}
+ drvdata->tx.t_xfer_end = ktime_get();
drvdata->mode = PS2_MODE_RX;
- complete(&drvdata->tx_done);
+ complete(&drvdata->tx.complete);
cnt = 1;
- old_jiffies = 0;
goto end; /* success */
default:
- /* Probably we missed the stop bit. Therefore we release data
+ /*
+ * Probably we missed the stop bit. Therefore we release data
* line and try again.
*/
gpiod_direction_input(drvdata->gpio_data);
err:
cnt = 1;
- old_jiffies = 0;
gpiod_direction_input(drvdata->gpio_data);
- __ps2_gpio_write(drvdata->serio, drvdata->tx_byte);
+ __ps2_gpio_write(drvdata->serio, drvdata->tx.byte);
end:
- drvdata->tx_cnt = cnt;
+ drvdata->tx.cnt = cnt;
return IRQ_HANDLED;
}
static int ps2_gpio_get_props(struct device *dev,
struct ps2_gpio_data *drvdata)
{
- drvdata->gpio_data = devm_gpiod_get(dev, "data", GPIOD_IN);
+ enum gpiod_flags gflags;
+
+ /* Enforce open drain, since this is required by the PS/2 bus. */
+ gflags = GPIOD_IN | GPIOD_FLAGS_BIT_OPEN_DRAIN;
+
+ drvdata->gpio_data = devm_gpiod_get(dev, "data", gflags);
if (IS_ERR(drvdata->gpio_data)) {
dev_err(dev, "failed to request data gpio: %ld",
PTR_ERR(drvdata->gpio_data));
return PTR_ERR(drvdata->gpio_data);
}
- drvdata->gpio_clk = devm_gpiod_get(dev, "clk", GPIOD_IN);
+ drvdata->gpio_clk = devm_gpiod_get(dev, "clk", gflags);
if (IS_ERR(drvdata->gpio_clk)) {
dev_err(dev, "failed to request clock gpio: %ld",
PTR_ERR(drvdata->gpio_clk));
serio->id.type = SERIO_8042;
serio->open = ps2_gpio_open;
serio->close = ps2_gpio_close;
- /* Write can be enabled in platform/dt data, but possibly it will not
+ /*
+ * Write can be enabled in platform/dt data, but possibly it will not
* work because of the tough timings.
*/
serio->write = drvdata->write_enable ? ps2_gpio_write : NULL;
drvdata->dev = dev;
drvdata->mode = PS2_MODE_RX;
- /* Tx count always starts at 1, as the start bit is sent implicitly by
+ /*
+ * Tx count always starts at 1, as the start bit is sent implicitly by
* host-to-device communication initialization.
*/
- drvdata->tx_cnt = 1;
+ drvdata->tx.cnt = 1;
- INIT_DELAYED_WORK(&drvdata->tx_work, ps2_gpio_tx_work_fn);
- init_completion(&drvdata->tx_done);
- mutex_init(&drvdata->tx_mutex);
+ INIT_DELAYED_WORK(&drvdata->tx.work, ps2_gpio_tx_work_fn);
+ init_completion(&drvdata->tx.complete);
+ mutex_init(&drvdata->tx.mutex);
serio_register_port(serio);
platform_set_drvdata(pdev, drvdata);
}
msleep(aiptek->curSetting.programmableDelay);
- if ((ret =
- aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
+ if (aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf) != sizeof_buf) {
dev_dbg(&aiptek->intf->dev,
"aiptek_query failed: returned 0x%02x 0x%02x 0x%02x\n",
buf[0], buf[1], buf[2]);
To compile this driver as a module, choose M here: the
module will be called mtouch.
+config TOUCHSCREEN_IMAGIS
+ tristate "Imagis touchscreen support"
+ depends on I2C
+ help
+ Say Y here if you have an Imagis IST30xxC touchscreen.
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called imagis.
+
config TOUCHSCREEN_IMX6UL_TSC
tristate "Freescale i.MX6UL touchscreen controller"
depends on ((OF && GPIOLIB) || COMPILE_TEST) && HAS_IOMEM
obj-$(CONFIG_TOUCHSCREEN_HIDEEP) += hideep.o
obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o
obj-$(CONFIG_TOUCHSCREEN_ILITEK) += ilitek_ts_i2c.o
+obj-$(CONFIG_TOUCHSCREEN_IMAGIS) += imagis.o
obj-$(CONFIG_TOUCHSCREEN_IMX6UL_TSC) += imx6ul_tsc.o
obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o
obj-$(CONFIG_TOUCHSCREEN_IPROC) += bcm_iproc_tsc.o
return -ENOMSG;
}
-static struct input_dev *goodix_create_pen_input(struct goodix_ts_data *ts)
+static int goodix_create_pen_input(struct goodix_ts_data *ts)
{
struct device *dev = &ts->client->dev;
struct input_dev *input;
input = devm_input_allocate_device(dev);
if (!input)
- return NULL;
-
- input_alloc_absinfo(input);
- if (!input->absinfo) {
- input_free_device(input);
- return NULL;
- }
-
- input->absinfo[ABS_X] = ts->input_dev->absinfo[ABS_MT_POSITION_X];
- input->absinfo[ABS_Y] = ts->input_dev->absinfo[ABS_MT_POSITION_Y];
- __set_bit(ABS_X, input->absbit);
- __set_bit(ABS_Y, input->absbit);
- input_set_abs_params(input, ABS_PRESSURE, 0, 255, 0, 0);
+ return -ENOMEM;
- input_set_capability(input, EV_KEY, BTN_TOUCH);
- input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
- input_set_capability(input, EV_KEY, BTN_STYLUS);
- input_set_capability(input, EV_KEY, BTN_STYLUS2);
- __set_bit(INPUT_PROP_DIRECT, input->propbit);
+ input_copy_abs(input, ABS_X, ts->input_dev, ABS_MT_POSITION_X);
+ input_copy_abs(input, ABS_Y, ts->input_dev, ABS_MT_POSITION_Y);
/*
* The resolution of these touchscreens is about 10 units/mm, the actual
* resolution does not matter much since we set INPUT_PROP_DIRECT.
*/
input_abs_set_res(input, ABS_X, 10);
input_abs_set_res(input, ABS_Y, 10);
+ input_set_abs_params(input, ABS_PRESSURE, 0, 255, 0, 0);
+
+ input_set_capability(input, EV_KEY, BTN_TOUCH);
+ input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
+ input_set_capability(input, EV_KEY, BTN_STYLUS);
+ input_set_capability(input, EV_KEY, BTN_STYLUS2);
+ __set_bit(INPUT_PROP_DIRECT, input->propbit);
input->name = "Goodix Active Pen";
input->phys = "input/pen";
input->id.product = 0x1001;
input->id.version = ts->version;
- if (input_register_device(input) != 0) {
- input_free_device(input);
- return NULL;
- }
-
- return input;
+ ts->input_pen = input;
+ return 0;
}
static void goodix_ts_report_pen_down(struct goodix_ts_data *ts, u8 *data)
{
- int input_x, input_y, input_w;
+ int input_x, input_y, input_w, error;
u8 key_value;
- if (!ts->input_pen) {
- ts->input_pen = goodix_create_pen_input(ts);
- if (!ts->input_pen)
- return;
+ if (!ts->pen_input_registered) {
+ error = input_register_device(ts->input_pen);
+ ts->pen_input_registered = (error == 0) ? 1 : error;
}
+ if (ts->pen_input_registered < 0)
+ return;
+
if (ts->contact_size == 9) {
input_x = get_unaligned_le16(&data[4]);
input_y = get_unaligned_le16(&data[6]);
return error;
}
+ /*
+ * Create the input_pen device before goodix_request_irq() calls
+ * devm_request_threaded_irq() so that the devm framework frees
+ * it after disabling the irq.
+ * Unfortunately there is no way to detect if the touchscreen has pen
+ * support, so registering the dev is delayed till the first pen event.
+ */
+ error = goodix_create_pen_input(ts);
+ if (error)
+ return error;
+
ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT;
error = goodix_request_irq(ts);
if (error) {
u16 version;
bool reset_controller_at_probe;
bool load_cfg_from_disk;
+ int pen_input_registered;
struct completion firmware_loading_complete;
unsigned long irq_flags;
enum goodix_irq_pin_access_method irq_pin_access_method;
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+
+#define IST3038C_HIB_ACCESS (0x800B << 16)
+#define IST3038C_DIRECT_ACCESS BIT(31)
+#define IST3038C_REG_CHIPID 0x40001000
+#define IST3038C_REG_HIB_BASE 0x30000100
+#define IST3038C_REG_TOUCH_STATUS (IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS)
+#define IST3038C_REG_TOUCH_COORD (IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS | 0x8)
+#define IST3038C_REG_INTR_MESSAGE (IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS | 0x4)
+#define IST3038C_WHOAMI 0x38c
+#define IST3038C_CHIP_ON_DELAY_MS 60
+#define IST3038C_I2C_RETRY_COUNT 3
+#define IST3038C_MAX_FINGER_NUM 10
+#define IST3038C_X_MASK GENMASK(23, 12)
+#define IST3038C_X_SHIFT 12
+#define IST3038C_Y_MASK GENMASK(11, 0)
+#define IST3038C_AREA_MASK GENMASK(27, 24)
+#define IST3038C_AREA_SHIFT 24
+#define IST3038C_FINGER_COUNT_MASK GENMASK(15, 12)
+#define IST3038C_FINGER_COUNT_SHIFT 12
+#define IST3038C_FINGER_STATUS_MASK GENMASK(9, 0)
+
+struct imagis_ts {
+ struct i2c_client *client;
+ struct input_dev *input_dev;
+ struct touchscreen_properties prop;
+ struct regulator_bulk_data supplies[2];
+};
+
+static int imagis_i2c_read_reg(struct imagis_ts *ts,
+ unsigned int reg, u32 *data)
+{
+ __be32 ret_be;
+ __be32 reg_be = cpu_to_be32(reg);
+ struct i2c_msg msg[] = {
+ {
+ .addr = ts->client->addr,
+ .flags = 0,
+ .buf = (unsigned char *)®_be,
+ .len = sizeof(reg_be),
+ }, {
+ .addr = ts->client->addr,
+ .flags = I2C_M_RD,
+ .buf = (unsigned char *)&ret_be,
+ .len = sizeof(ret_be),
+ },
+ };
+ int ret, error;
+ int retry = IST3038C_I2C_RETRY_COUNT;
+
+ /* Retry in case the controller fails to respond */
+ do {
+ ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
+ if (ret == ARRAY_SIZE(msg)) {
+ *data = be32_to_cpu(ret_be);
+ return 0;
+ }
+
+ error = ret < 0 ? ret : -EIO;
+ dev_err(&ts->client->dev,
+ "%s - i2c_transfer failed: %d (%d)\n",
+ __func__, error, ret);
+ } while (--retry);
+
+ return error;
+}
+
+static irqreturn_t imagis_interrupt(int irq, void *dev_id)
+{
+ struct imagis_ts *ts = dev_id;
+ u32 intr_message, finger_status;
+ unsigned int finger_count, finger_pressed;
+ int i;
+ int error;
+
+ error = imagis_i2c_read_reg(ts, IST3038C_REG_INTR_MESSAGE,
+ &intr_message);
+ if (error) {
+ dev_err(&ts->client->dev,
+ "failed to read the interrupt message: %d\n", error);
+ goto out;
+ }
+
+ finger_count = (intr_message & IST3038C_FINGER_COUNT_MASK) >>
+ IST3038C_FINGER_COUNT_SHIFT;
+ if (finger_count > IST3038C_MAX_FINGER_NUM) {
+ dev_err(&ts->client->dev,
+ "finger count %d is more than maximum supported\n",
+ finger_count);
+ goto out;
+ }
+
+ finger_pressed = intr_message & IST3038C_FINGER_STATUS_MASK;
+
+ for (i = 0; i < finger_count; i++) {
+ error = imagis_i2c_read_reg(ts,
+ IST3038C_REG_TOUCH_COORD + (i * 4),
+ &finger_status);
+ if (error) {
+ dev_err(&ts->client->dev,
+ "failed to read coordinates for finger %d: %d\n",
+ i, error);
+ goto out;
+ }
+
+ input_mt_slot(ts->input_dev, i);
+ input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER,
+ finger_pressed & BIT(i));
+ touchscreen_report_pos(ts->input_dev, &ts->prop,
+ (finger_status & IST3038C_X_MASK) >>
+ IST3038C_X_SHIFT,
+ finger_status & IST3038C_Y_MASK, 1);
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,
+ (finger_status & IST3038C_AREA_MASK) >>
+ IST3038C_AREA_SHIFT);
+ }
+
+ input_mt_sync_frame(ts->input_dev);
+ input_sync(ts->input_dev);
+
+out:
+ return IRQ_HANDLED;
+}
+
+static void imagis_power_off(void *_ts)
+{
+ struct imagis_ts *ts = _ts;
+
+ regulator_bulk_disable(ARRAY_SIZE(ts->supplies), ts->supplies);
+}
+
+static int imagis_power_on(struct imagis_ts *ts)
+{
+ int error;
+
+ error = regulator_bulk_enable(ARRAY_SIZE(ts->supplies), ts->supplies);
+ if (error)
+ return error;
+
+ msleep(IST3038C_CHIP_ON_DELAY_MS);
+
+ return 0;
+}
+
+static int imagis_start(struct imagis_ts *ts)
+{
+ int error;
+
+ error = imagis_power_on(ts);
+ if (error)
+ return error;
+
+ enable_irq(ts->client->irq);
+
+ return 0;
+}
+
+static int imagis_stop(struct imagis_ts *ts)
+{
+ disable_irq(ts->client->irq);
+
+ imagis_power_off(ts);
+
+ return 0;
+}
+
+static int imagis_input_open(struct input_dev *dev)
+{
+ struct imagis_ts *ts = input_get_drvdata(dev);
+
+ return imagis_start(ts);
+}
+
+static void imagis_input_close(struct input_dev *dev)
+{
+ struct imagis_ts *ts = input_get_drvdata(dev);
+
+ imagis_stop(ts);
+}
+
+static int imagis_init_input_dev(struct imagis_ts *ts)
+{
+ struct input_dev *input_dev;
+ int error;
+
+ input_dev = devm_input_allocate_device(&ts->client->dev);
+ if (!input_dev)
+ return -ENOMEM;
+
+ ts->input_dev = input_dev;
+
+ input_dev->name = "Imagis capacitive touchscreen";
+ input_dev->phys = "input/ts";
+ input_dev->id.bustype = BUS_I2C;
+ input_dev->open = imagis_input_open;
+ input_dev->close = imagis_input_close;
+
+ input_set_drvdata(input_dev, ts);
+
+ input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
+ input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
+ input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+
+ touchscreen_parse_properties(input_dev, true, &ts->prop);
+ if (!ts->prop.max_x || !ts->prop.max_y) {
+ dev_err(&ts->client->dev,
+ "Touchscreen-size-x and/or touchscreen-size-y not set in dts\n");
+ return -EINVAL;
+ }
+
+ error = input_mt_init_slots(input_dev,
+ IST3038C_MAX_FINGER_NUM,
+ INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+ if (error) {
+ dev_err(&ts->client->dev,
+ "Failed to initialize MT slots: %d", error);
+ return error;
+ }
+
+ error = input_register_device(input_dev);
+ if (error) {
+ dev_err(&ts->client->dev,
+ "Failed to register input device: %d", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int imagis_init_regulators(struct imagis_ts *ts)
+{
+ struct i2c_client *client = ts->client;
+
+ ts->supplies[0].supply = "vdd";
+ ts->supplies[1].supply = "vddio";
+ return devm_regulator_bulk_get(&client->dev,
+ ARRAY_SIZE(ts->supplies),
+ ts->supplies);
+}
+
+static int imagis_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct imagis_ts *ts;
+ int chip_id, error;
+
+ ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
+
+ ts->client = i2c;
+
+ error = imagis_init_regulators(ts);
+ if (error) {
+ dev_err(dev, "regulator init error: %d\n", error);
+ return error;
+ }
+
+ error = imagis_power_on(ts);
+ if (error) {
+ dev_err(dev, "failed to enable regulators: %d\n", error);
+ return error;
+ }
+
+ error = devm_add_action_or_reset(dev, imagis_power_off, ts);
+ if (error) {
+ dev_err(dev, "failed to install poweroff action: %d\n", error);
+ return error;
+ }
+
+ error = imagis_i2c_read_reg(ts,
+ IST3038C_REG_CHIPID | IST3038C_DIRECT_ACCESS,
+ &chip_id);
+ if (error) {
+ dev_err(dev, "chip ID read failure: %d\n", error);
+ return error;
+ }
+
+ if (chip_id != IST3038C_WHOAMI) {
+ dev_err(dev, "unknown chip ID: 0x%x\n", chip_id);
+ return -EINVAL;
+ }
+
+ error = devm_request_threaded_irq(dev, i2c->irq,
+ NULL, imagis_interrupt,
+ IRQF_ONESHOT | IRQF_NO_AUTOEN,
+ "imagis-touchscreen", ts);
+ if (error) {
+ dev_err(dev, "IRQ %d allocation failure: %d\n",
+ i2c->irq, error);
+ return error;
+ }
+
+ error = imagis_init_input_dev(ts);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static int __maybe_unused imagis_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct imagis_ts *ts = i2c_get_clientdata(client);
+ int retval = 0;
+
+ mutex_lock(&ts->input_dev->mutex);
+
+ if (input_device_enabled(ts->input_dev))
+ retval = imagis_stop(ts);
+
+ mutex_unlock(&ts->input_dev->mutex);
+
+ return retval;
+}
+
+static int __maybe_unused imagis_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct imagis_ts *ts = i2c_get_clientdata(client);
+ int retval = 0;
+
+ mutex_lock(&ts->input_dev->mutex);
+
+ if (input_device_enabled(ts->input_dev))
+ retval = imagis_start(ts);
+
+ mutex_unlock(&ts->input_dev->mutex);
+
+ return retval;
+}
+
+static SIMPLE_DEV_PM_OPS(imagis_pm_ops, imagis_suspend, imagis_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id imagis_of_match[] = {
+ { .compatible = "imagis,ist3038c", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, imagis_of_match);
+#endif
+
+static struct i2c_driver imagis_ts_driver = {
+ .driver = {
+ .name = "imagis-touchscreen",
+ .pm = &imagis_pm_ops,
+ .of_match_table = of_match_ptr(imagis_of_match),
+ },
+ .probe_new = imagis_probe,
+};
+
+module_i2c_driver(imagis_ts_driver);
+
+MODULE_DESCRIPTION("Imagis IST3038C Touchscreen Driver");
+MODULE_AUTHOR("Markuss Broks <markuss.broks@gmail.com>");
+MODULE_LICENSE("GPL");
{
struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client);
struct touchscreen_properties *prop = &iqs5xx->prop;
- struct input_dev *input;
+ struct input_dev *input = iqs5xx->input;
u16 max_x, max_y;
int error;
- if (!iqs5xx->input) {
+ if (!input) {
input = devm_input_allocate_device(&client->dev);
if (!input)
return -ENOMEM;
if (error)
return error;
- input_set_abs_params(iqs5xx->input, ABS_MT_POSITION_X, 0, max_x, 0, 0);
- input_set_abs_params(iqs5xx->input, ABS_MT_POSITION_Y, 0, max_y, 0, 0);
- input_set_abs_params(iqs5xx->input, ABS_MT_PRESSURE, 0, U16_MAX, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0, max_x, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y, 0, max_y, 0, 0);
+ input_set_abs_params(input, ABS_MT_PRESSURE, 0, U16_MAX, 0, 0);
- touchscreen_parse_properties(iqs5xx->input, true, prop);
+ touchscreen_parse_properties(input, true, prop);
/*
* The device reserves 0xFFFF for coordinates that correspond to slots
return error;
}
- error = input_mt_init_slots(iqs5xx->input, IQS5XX_NUM_CONTACTS,
+ error = input_mt_init_slots(input, IQS5XX_NUM_CONTACTS,
INPUT_MT_DIRECT);
if (error)
dev_err(&client->dev, "Failed to initialize slots: %d\n",
input_mt_slot(input, i);
if (input_mt_report_slot_state(input, MT_TOOL_FINGER,
pressure != 0)) {
- touchscreen_report_pos(iqs5xx->input, &iqs5xx->prop,
+ touchscreen_report_pos(input, &iqs5xx->prop,
be16_to_cpu(touch_data->abs_x),
be16_to_cpu(touch_data->abs_y),
true);
err = pm_runtime_get_sync(&sdata->client->dev);
if (err < 0)
- return err;
+ goto out;
err = i2c_smbus_write_byte(sdata->client, STMFTS_MS_MT_SENSE_ON);
if (err)
- return err;
+ goto out;
mutex_lock(&sdata->mutex);
sdata->running = true;
"failed to enable touchkey\n");
}
- return 0;
+out:
+ pm_runtime_put_noidle(&sdata->client->dev);
+ return err;
}
static void stmfts_input_close(struct input_dev *dev)
int in_z1;
int in_z2;
+ struct touchscreen_properties prop;
+
spinlock_t lock;
struct timer_list penup_timer;
int x, int y, int pressure)
{
if (pressure) {
- input_report_abs(ts->idev, ABS_X, x);
- input_report_abs(ts->idev, ABS_Y, y);
+ touchscreen_report_pos(ts->idev, &ts->prop, x, y, false);
input_report_abs(ts->idev, ABS_PRESSURE, pressure);
if (!ts->pen_down) {
input_report_key(ts->idev, BTN_TOUCH, !!pressure);
input_set_abs_params(input_dev, ABS_PRESSURE,
0, MAX_12BIT, TSC200X_DEF_P_FUZZ, 0);
- touchscreen_parse_properties(input_dev, false, NULL);
+ touchscreen_parse_properties(input_dev, false, &ts->prop);
/* Ensure the touchscreen is off */
tsc200x_stop_scan(ts);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Helpers for ChromeOS Vivaldi keyboard function row mapping
+ *
+ * Copyright (C) 2022 Google, Inc
+ */
+
+#include <linux/export.h>
+#include <linux/input/vivaldi-fmap.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+/**
+ * vivaldi_function_row_physmap_show - Print vivaldi function row physmap attribute
+ * @data: The vivaldi function row map
+ * @buf: Buffer to print the function row phsymap to
+ */
+ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data,
+ char *buf)
+{
+ ssize_t size = 0;
+ int i;
+ const u32 *physmap = data->function_row_physmap;
+
+ if (!data->num_function_row_keys)
+ return 0;
+
+ for (i = 0; i < data->num_function_row_keys; i++)
+ size += scnprintf(buf + size, PAGE_SIZE - size,
+ "%s%02X", size ? " " : "", physmap[i]);
+ if (size)
+ size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
+
+ return size;
+}
+EXPORT_SYMBOL_GPL(vivaldi_function_row_physmap_show);
+
+MODULE_LICENSE("GPL");
void input_alloc_absinfo(struct input_dev *dev);
void input_set_abs_params(struct input_dev *dev, unsigned int axis,
int min, int max, int fuzz, int flat);
+void input_copy_abs(struct input_dev *dst, unsigned int dst_axis,
+ const struct input_dev *src, unsigned int src_axis);
#define INPUT_GENERATE_ABS_ACCESSORS(_suffix, _item) \
static inline int input_abs_get_##_suffix(struct input_dev *dev, \
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _VIVALDI_FMAP_H
+#define _VIVALDI_FMAP_H
+
+#include <linux/types.h>
+
+#define VIVALDI_MAX_FUNCTION_ROW_KEYS 24
+
+/**
+ * struct vivaldi_data - Function row map data for ChromeOS Vivaldi keyboards
+ * @function_row_physmap: An array of scancodes or their equivalent (HID usage
+ * codes, encoded rows/columns, etc) for the top
+ * row function keys, in an order from left to right
+ * @num_function_row_keys: The number of top row keys in a custom keyboard
+ *
+ * This structure is supposed to be used by ChromeOS keyboards using
+ * the Vivaldi keyboard function row design.
+ */
+struct vivaldi_data {
+ u32 function_row_physmap[VIVALDI_MAX_FUNCTION_ROW_KEYS];
+ unsigned int num_function_row_keys;
+};
+
+ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data,
+ char *buf);
+
+#endif /* _VIVALDI_FMAP_H */
projects / linux-2.6-block.git / commitdiff