linux-kernel - Re: [PATCH] arm64: dts: qcom: c630: Expose LID events

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Message-ID: <1d525088-7527-38ac-9397-7711414fd4ad@kali.org>
Date:   Mon, 30 Nov 2020 10:19:12 -0600
From:   Steev Klimaszewski <steev@...i.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawn.guo@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: c630: Expose LID events


On 11/25/20 12:08 AM, Bjorn Andersson wrote:
> The LID state can be read from GPIO 124 and the "tablet mode" from GPIO
> 95, expose these to the system using gpio-keys and mark the falling edge
> of the LID state as a wakeup-source - to wake the system from suspend.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
>  .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 39 +++++++++++++++++++
>  1 file changed, 39 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> index bb314973eb0c..f956dbf664c1 100644
> --- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> @@ -8,6 +8,8 @@
>  /dts-v1/;
>  
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/gpio-keys.h>
> +#include <dt-bindings/input/input.h>
>  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>  #include <dt-bindings/sound/qcom,q6afe.h>
>  #include <dt-bindings/sound/qcom,q6asm.h>
> @@ -21,6 +23,27 @@ / {
>  	aliases {
>  		hsuart0 = &uart6;
>  	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&lid_pin_active>, <&mode_pin_active>;
> +
> +		lid {
> +			gpios = <&tlmm 124 GPIO_ACTIVE_HIGH>;
> +			linux,input-type = <EV_SW>;
> +			linux,code = <SW_LID>;
> +			wakeup-source;
> +			wakeup-event-action = <EV_ACT_DEASSERTED>;
> +		};
> +
> +		mode {
> +			gpios = <&tlmm 95 GPIO_ACTIVE_HIGH>;
> +			linux,input-type = <EV_SW>;
> +			linux,code = <SW_TABLET_MODE>;
> +		};
> +	};
>  };
>  
>  &adsp_pas {
> @@ -466,6 +489,22 @@ wcd_intr_default: wcd_intr_default {
>  		bias-pull-down;
>  		drive-strength = <2>;
>  	};
> +
> +	lid_pin_active: lid-pin {
> +		pins = "gpio124";
> +		function = "gpio";
> +
> +		input-enable;
> +		bias-disable;
> +	};
> +
> +	mode_pin_active: mode-pin {
> +		pins = "gpio95";
> +		function = "gpio";
> +
> +		input-enable;
> +		bias-disable;
> +	};
>  };
>  
>  &uart6 {


Tested-by: Steev Klimaszewski <steev@...i.org>