linux-kernel - Re: [PATCH v3 3/3] arm64: dts: qcom: sdm845-oneplus: add alert-slider

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Date:   Wed, 22 Feb 2023 01:09:06 +0100
From:   Gergo Koteles <soyer@....hu>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jonathan Corbet <corbet@....net>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        Caleb Connolly <caleb@...nolly.tech>
Subject: Re: [PATCH v3 3/3] arm64: dts: qcom: sdm845-oneplus: add alert-slider

Hi Konrad,
On 2023. 02. 20. 11:17, Konrad Dybcio wrote:
> 
> 
> On 20.02.2023 01:13, Gergo Koteles wrote:
>> The alert-slider is a tri-state sound profile switch found on the OnePlus 6,
>> Android maps the states to "silent", "vibrate" and "ring". Expose them as
>> ABS_SND_PROFILE events.
>> The previous GPIO numbers were wrong. Update them to the correct
>> ones.
>>
>> Co-developed-by: Caleb Connolly <caleb@...nolly.tech>
>> Signed-off-by: Caleb Connolly <caleb@...nolly.tech>
>> Signed-off-by: Gergo Koteles <soyer@....hu>
>> ---
>>   .../boot/dts/qcom/sdm845-oneplus-common.dtsi  | 43 ++++++++++++++++++-
>>   1 file changed, 41 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
>> index 64638ea94db7..ff982dd853a9 100644
>> --- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
>> @@ -52,6 +52,45 @@ key-vol-up {
>>   		};
>>   	};
>>   
>> +	alert-slider {
> This is out of order, alphabetically.
> 
>> +		compatible = "gpio-keys";
>> +		label = "Alert slider";
>> +
>> +		pinctrl-0 = <&alert_slider_default>;
>> +		pinctrl-names = "default";
>> +
>> +		switch-top {
>> +			label = "Silent";
>> +			linux,input-type = <EV_ABS>;
>> +			linux,code = <ABS_SND_PROFILE>;
>> +			linux,input-value = <SND_PROFILE_SILENT>;
>> +			gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
>> +			debounce-interval = <50>;
> Is there a reason it can't be the default 5ms, since it should
> more or less be a simple input ping to the userspace?
> 
Yes, it's a simple input ping to the userspace.
It works with the default 5ms also.

Thanks,
Gergo

> Other than that:
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> 
> Konrad
>> +			linux,can-disable;
>> +		};
>> +
>> +		switch-middle {
>> +			label = "Vibrate";
>> +			linux,input-type = <EV_ABS>;
>> +			linux,code = <ABS_SND_PROFILE>;
>> +			linux,input-value = <SND_PROFILE_VIBRATE>;
>> +			gpios = <&tlmm 52 GPIO_ACTIVE_LOW>;
>> +			debounce-interval = <50>;
>> +			linux,can-disable;
>> +
>> +		};
>> +
>> +		switch-bottom {
>> +			label = "Ring";
>> +			linux,input-type = <EV_ABS>;
>> +			linux,code = <ABS_SND_PROFILE>;
>> +			linux,input-value = <SND_PROFILE_RING>;
>> +			gpios = <&tlmm 24 GPIO_ACTIVE_LOW>;
>> +			debounce-interval = <50>;
>> +			linux,can-disable;
>> +		};
>> +	};
>> +
>>   	reserved-memory {
>>   		/*
>>   		 * The rmtfs_mem needs to be guarded due to "XPU limitations"
>> @@ -753,8 +792,8 @@ &usb_1_hsphy {
>>   &tlmm {
>>   	gpio-reserved-ranges = <0 4>, <81 4>;
>>   
>> -	tri_state_key_default: tri-state-key-default-state {
>> -		pins = "gpio40", "gpio42", "gpio26";
>> +	alert_slider_default: alert-slider-default-state {
>> +		pins = "gpio126", "gpio52", "gpio24";
>>   		function = "gpio";
>>   		drive-strength = <2>;
>>   		bias-disable;