| Message ID | 1567424417-3914-3-git-send-email-michal.vokac@ysoft.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add polling mode to the MPR121 touchkey | expand |
On Mon, Sep 02, 2019 at 01:40:15PM +0200, Michal Vokáč wrote: > Add an option to periodicaly poll the device to get the buttons states > as the interrupt line may not be used on some platforms. > > Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> > --- > I am not sure how to propperly handle this. > Either interrupt or linux,poll-interval is required, but not both. Add this at the top level: oneOf: - required: [ interrupts ] - required: [ linux,poll-interval ] > > .../bindings/input/fsl,mpr121-touchkey.yaml | 20 +++++++++++++++++++- > 1 file changed, 19 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml > index c463c1c81755..2b3073a3c9f4 100644 > --- a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml > +++ b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml > @@ -34,6 +34,10 @@ properties: > minItems: 1 > maxItems: 12 > > + linux,poll-interval: > + description: Poll interval time in milliseconds. > + maxItems: 1 We already have 'poll-interval' in several bindings. Use that. This should have a type definition and you don't need maxItems: $ref: /schemas/types.yaml#/definitions/uint32 Really this should go in a common input schema doc. > + > wakeup-source: Use any event on keypad as wakeup event. > type: boolean > > @@ -44,12 +48,12 @@ properties: > required: > - compatible > - reg > - - interrupts > - vdd-supply > - linux,keycodes > > examples: > - | > + // Example with interrupts > #include "dt-bindings/input/input.h" > touchkey: mpr121@5a { > compatible = "fsl,mpr121-touchkey"; > @@ -62,3 +66,17 @@ examples: > <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, > <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; > }; > + > + - | > + // Example with polling > + #include "dt-bindings/input/input.h" > + touchkey: mpr121@5a { > + compatible = "fsl,mpr121-touchkey"; > + reg = <0x5a>; > + linux,poll-interval = <20>; > + autorepeat; > + vdd-supply = <&ldo4_reg>; > + linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, > + <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, > + <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; > + ); > -- > 2.1.4 >
On 03. 09. 19 9:01, Rob Herring wrote: > On Mon, Sep 02, 2019 at 01:40:15PM +0200, Michal Vokáč wrote: >> Add an option to periodicaly poll the device to get the buttons states >> as the interrupt line may not be used on some platforms. >> >> Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> >> --- >> I am not sure how to propperly handle this. >> Either interrupt or linux,poll-interval is required, but not both. > > Add this at the top level: > > oneOf: > - required: [ interrupts ] > - required: [ linux,poll-interval ] > Nice, works as expected. >> >> .../bindings/input/fsl,mpr121-touchkey.yaml | 20 +++++++++++++++++++- >> 1 file changed, 19 insertions(+), 1 deletion(-) >> >> diff --git a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml >> index c463c1c81755..2b3073a3c9f4 100644 >> --- a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml >> +++ b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml >> @@ -34,6 +34,10 @@ properties: >> minItems: 1 >> maxItems: 12 >> >> + linux,poll-interval: >> + description: Poll interval time in milliseconds. >> + maxItems: 1 > > We already have 'poll-interval' in several bindings. Use that. OK, will do. linux,poll-intervall was initially suggested by Dmitry but AFAICT he is OK with this. > This should have a type definition and you don't need maxItems: > > $ref: /schemas/types.yaml#/definitions/uint32 OK. > Really this should go in a common input schema doc. I am not sure how to deal with this. Do you suggest to create Documentation/devicetree/bindings/input/input.yaml and put all the common input properties there? Something like: diff --git a/Documentation/devicetree/bindings/input/input.yaml b/Documentation/devicetree/bindings/input/input.yaml new file mode 100644 index 000000000000..5dc10ebdfdf0 --- /dev/null +++ b/Documentation/devicetree/bindings/input/input.yaml @@ -0,0 +1,24 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/input.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Common input schema binding + +maintainers: + - Dmitry Torokhov <dmitry.torokhov@gmail.com> + +properties: + linux,keycodes: + description: + Specifies an array of numeric keycode values to be used for reporting + button presses. The array can contain up to 12 entries. + minItems: 1 + maxItems: 12 + $ref: /schemas/types.yaml#/definitions/uint32-array + + poll-interval: + description: Poll interval time in milliseconds. + $ref: /schemas/types.yaml#/definitions/uint32 + --- Or something else? And what is the impact on the fsl,mpr121-touchkey.yaml content/format? I could not find any example in any subsystem of such approach. Thank you, Michal >> + >> wakeup-source: Use any event on keypad as wakeup event. >> type: boolean >> >> @@ -44,12 +48,12 @@ properties: >> required: >> - compatible >> - reg >> - - interrupts >> - vdd-supply >> - linux,keycodes >> >> examples: >> - | >> + // Example with interrupts >> #include "dt-bindings/input/input.h" >> touchkey: mpr121@5a { >> compatible = "fsl,mpr121-touchkey"; >> @@ -62,3 +66,17 @@ examples: >> <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, >> <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; >> }; >> + >> + - | >> + // Example with polling >> + #include "dt-bindings/input/input.h" >> + touchkey: mpr121@5a { >> + compatible = "fsl,mpr121-touchkey"; >> + reg = <0x5a>; >> + linux,poll-interval = <20>; >> + autorepeat; >> + vdd-supply = <&ldo4_reg>; >> + linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, >> + <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, >> + <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; >> + ); >> -- >> 2.1.4 >>
On 17. 09. 19 16:17, Michal Vokáč wrote: > On 03. 09. 19 9:01, Rob Herring wrote: >> On Mon, Sep 02, 2019 at 01:40:15PM +0200, Michal Vokáč wrote: >>> Add an option to periodicaly poll the device to get the buttons states >>> as the interrupt line may not be used on some platforms. >>> >>> Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> >>> --- >>> I am not sure how to propperly handle this. >>> Either interrupt or linux,poll-interval is required, but not both. >> >> Add this at the top level: >> >> oneOf: >> - required: [ interrupts ] >> - required: [ linux,poll-interval ] >> > > Nice, works as expected. > >>> >>> .../bindings/input/fsl,mpr121-touchkey.yaml | 20 +++++++++++++++++++- >>> 1 file changed, 19 insertions(+), 1 deletion(-) >>> >>> diff --git a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml >>> index c463c1c81755..2b3073a3c9f4 100644 >>> --- a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml >>> +++ b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml >>> @@ -34,6 +34,10 @@ properties: >>> minItems: 1 >>> maxItems: 12 >>> + linux,poll-interval: >>> + description: Poll interval time in milliseconds. >>> + maxItems: 1 >> >> We already have 'poll-interval' in several bindings. Use that. > > OK, will do. > linux,poll-intervall was initially suggested by Dmitry but AFAICT he is OK > with this. > >> This should have a type definition and you don't need maxItems: >> >> $ref: /schemas/types.yaml#/definitions/uint32 > > OK. > >> Really this should go in a common input schema doc. > > I am not sure how to deal with this. Do you suggest to create > > Documentation/devicetree/bindings/input/input.yaml > > and put all the common input properties there? Something like: > > diff --git a/Documentation/devicetree/bindings/input/input.yaml b/Documentation/devicetree/bindings/input/input.yaml > new file mode 100644 > index 000000000000..5dc10ebdfdf0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/input.yaml > @@ -0,0 +1,24 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/input/input.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Common input schema binding > + > +maintainers: > + - Dmitry Torokhov <dmitry.torokhov@gmail.com> > + > +properties: > + linux,keycodes: > + description: > + Specifies an array of numeric keycode values to be used for reporting > + button presses. The array can contain up to 12 entries. > + minItems: 1 > + maxItems: 12 > + $ref: /schemas/types.yaml#/definitions/uint32-array > + > + poll-interval: > + description: Poll interval time in milliseconds. > + $ref: /schemas/types.yaml#/definitions/uint32 > + > --- > > Or something else? > And what is the impact on the fsl,mpr121-touchkey.yaml content/format? > I could not find any example in any subsystem of such approach. Hi Rob, maybe this went through the cracks unnoticed? > Thank you, > Michal > >>> + >>> wakeup-source: Use any event on keypad as wakeup event. >>> type: boolean >>> @@ -44,12 +48,12 @@ properties: >>> required: >>> - compatible >>> - reg >>> - - interrupts >>> - vdd-supply >>> - linux,keycodes >>> examples: >>> - | >>> + // Example with interrupts >>> #include "dt-bindings/input/input.h" >>> touchkey: mpr121@5a { >>> compatible = "fsl,mpr121-touchkey"; >>> @@ -62,3 +66,17 @@ examples: >>> <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, >>> <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; >>> }; >>> + >>> + - | >>> + // Example with polling >>> + #include "dt-bindings/input/input.h" >>> + touchkey: mpr121@5a { >>> + compatible = "fsl,mpr121-touchkey"; >>> + reg = <0x5a>; >>> + linux,poll-interval = <20>; >>> + autorepeat; >>> + vdd-supply = <&ldo4_reg>; >>> + linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, >>> + <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, >>> + <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; >>> + ); >>> -- >>> 2.1.4 >>> >
On Tue, Sep 17, 2019 at 9:17 AM Michal Vokáč <michal.vokac@ysoft.com> wrote: > > On 03. 09. 19 9:01, Rob Herring wrote: > > On Mon, Sep 02, 2019 at 01:40:15PM +0200, Michal Vokáč wrote: > >> Add an option to periodicaly poll the device to get the buttons states > >> as the interrupt line may not be used on some platforms. > >> > >> Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> > >> --- > >> I am not sure how to propperly handle this. > >> Either interrupt or linux,poll-interval is required, but not both. > > > > Add this at the top level: > > > > oneOf: > > - required: [ interrupts ] > > - required: [ linux,poll-interval ] > > > > Nice, works as expected. > > >> > >> .../bindings/input/fsl,mpr121-touchkey.yaml | 20 +++++++++++++++++++- > >> 1 file changed, 19 insertions(+), 1 deletion(-) > >> > >> diff --git a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml > >> index c463c1c81755..2b3073a3c9f4 100644 > >> --- a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml > >> +++ b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml > >> @@ -34,6 +34,10 @@ properties: > >> minItems: 1 > >> maxItems: 12 > >> > >> + linux,poll-interval: > >> + description: Poll interval time in milliseconds. > >> + maxItems: 1 > > > > We already have 'poll-interval' in several bindings. Use that. > > OK, will do. > linux,poll-intervall was initially suggested by Dmitry but AFAICT he is OK > with this. > > > This should have a type definition and you don't need maxItems: > > > > $ref: /schemas/types.yaml#/definitions/uint32 > > OK. > > > Really this should go in a common input schema doc. > > I am not sure how to deal with this. Do you suggest to create > > Documentation/devicetree/bindings/input/input.yaml > > and put all the common input properties there? Something like: Yes. > > diff --git a/Documentation/devicetree/bindings/input/input.yaml b/Documentation/devicetree/bindings/input/input.yaml > new file mode 100644 > index 000000000000..5dc10ebdfdf0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/input.yaml > @@ -0,0 +1,24 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/input/input.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Common input schema binding > + > +maintainers: > + - Dmitry Torokhov <dmitry.torokhov@gmail.com> > + > +properties: > + linux,keycodes: > + description: > + Specifies an array of numeric keycode values to be used for reporting > + button presses. The array can contain up to 12 entries. > + minItems: 1 > + maxItems: 12 > + $ref: /schemas/types.yaml#/definitions/uint32-array When you have additional constraints on a referenced schema, the reference has to be under an 'allOf': allOf: - $ref: /schemas/types.yaml#/definitions/uint32-array I still really don't get why and I've researched it... However, for the common schema, you probably want to drop minItems/maxItems. But you could define the value ranges? items: minimum: 0 maximum: 0xff > + > + poll-interval: > + description: Poll interval time in milliseconds. > + $ref: /schemas/types.yaml#/definitions/uint32 > + > --- > > Or something else? > And what is the impact on the fsl,mpr121-touchkey.yaml content/format? > I could not find any example in any subsystem of such approach. You only need to define any additional constraints on the common properties (such as minItems/maxItems) and don't need to repeat things like the type or description. In order to get the common schema applied, you do at the top-level of your binding: allOf: - $ref: input.yaml# Sometimes we don't have to do this if we have a reliable way of matching in the common binding such as the node name. Rob
diff --git a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml index c463c1c81755..2b3073a3c9f4 100644 --- a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml +++ b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml @@ -34,6 +34,10 @@ properties: minItems: 1 maxItems: 12 + linux,poll-interval: + description: Poll interval time in milliseconds. + maxItems: 1 + wakeup-source: Use any event on keypad as wakeup event. type: boolean @@ -44,12 +48,12 @@ properties: required: - compatible - reg - - interrupts - vdd-supply - linux,keycodes examples: - | + // Example with interrupts #include "dt-bindings/input/input.h" touchkey: mpr121@5a { compatible = "fsl,mpr121-touchkey"; @@ -62,3 +66,17 @@ examples: <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; }; + + - | + // Example with polling + #include "dt-bindings/input/input.h" + touchkey: mpr121@5a { + compatible = "fsl,mpr121-touchkey"; + reg = <0x5a>; + linux,poll-interval = <20>; + autorepeat; + vdd-supply = <&ldo4_reg>; + linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, + <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>, + <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; + );
Add an option to periodicaly poll the device to get the buttons states as the interrupt line may not be used on some platforms. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> --- I am not sure how to propperly handle this. Either interrupt or linux,poll-interval is required, but not both. .../bindings/input/fsl,mpr121-touchkey.yaml | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)