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From: Andreas Kemnade <andreas@kemnade.info>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: "Alistair Francis" <alistair23@gmail.com>,
	"Alistair Francis" <alistair@alistair23.me>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	devicetree <devicetree@vger.kernel.org>,
	linux-input <linux-input@vger.kernel.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Mylene Josserand" <mylene.josserand@free-electrons.com>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Henrik Rydberg" <rydberg@bitmath.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Mylène Josserand" <mylene.josserand@bootlin.com>,
	"Maxime Ripard" <maxime.ripard@bootlin.com>
Subject: Re: [PATCH v2 1/4] Input: Add driver for Cypress Generation 5 touchscreen
Date: Sat, 18 Dec 2021 23:18:23 +0100	[thread overview]
Message-ID: <20211218231823.49a72256@aktux> (raw)
In-Reply-To: <YbbeDFJERtP0mAIQ@google.com>

Hi,

On Sun, 12 Dec 2021 21:45:48 -0800
Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:

[...]
> > > This is also likely unsafe if controller is not completely shut off and
> > > is capable of generating interrupts given input device is not yet
> > > allocated.  
> > 
> > I have dropped the `IRQF_TRIGGER_FALLING |`
> > 
> > I have tried to use level interrupts, but I can't get the device
> > working with them.  
> 
> That is weird, does the interrupt controller support level interrupts?
> 
I have set level interrupts via the devicetree,
things seem to work on Kobo Clara HD:
/proc/interrupts
203:      37402  gpio-mxc   6 Level     tt21000

       touchscreen@24 {
                compatible = "cypress,tt21000";
                reg = <0x24>;
                pinctrl-names = "default","sleep";
                pinctrl-0 = <&pinctrl_cyttsp5_gpio>;
                pinctrl-1 = <&pinctrl_cyttsp5_gpio_sleep>;
                interrupt-parent = <&gpio5>;
                interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
                reset-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
        };

Regards,
Andreas

WARNING: multiple messages have this Message-ID (diff)
From: Andreas Kemnade <andreas@kemnade.info>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: "Alistair Francis" <alistair23@gmail.com>,
	"Alistair Francis" <alistair@alistair23.me>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	devicetree <devicetree@vger.kernel.org>,
	linux-input <linux-input@vger.kernel.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Mylene Josserand" <mylene.josserand@free-electrons.com>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Henrik Rydberg" <rydberg@bitmath.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Mylène Josserand" <mylene.josserand@bootlin.com>,
	"Maxime Ripard" <maxime.ripard@bootlin.com>
Subject: Re: [PATCH v2 1/4] Input: Add driver for Cypress Generation 5 touchscreen
Date: Sat, 18 Dec 2021 23:18:23 +0100	[thread overview]
Message-ID: <20211218231823.49a72256@aktux> (raw)
In-Reply-To: <YbbeDFJERtP0mAIQ@google.com>

Hi,

On Sun, 12 Dec 2021 21:45:48 -0800
Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:

[...]
> > > This is also likely unsafe if controller is not completely shut off and
> > > is capable of generating interrupts given input device is not yet
> > > allocated.  
> > 
> > I have dropped the `IRQF_TRIGGER_FALLING |`
> > 
> > I have tried to use level interrupts, but I can't get the device
> > working with them.  
> 
> That is weird, does the interrupt controller support level interrupts?
> 
I have set level interrupts via the devicetree,
things seem to work on Kobo Clara HD:
/proc/interrupts
203:      37402  gpio-mxc   6 Level     tt21000

       touchscreen@24 {
                compatible = "cypress,tt21000";
                reg = <0x24>;
                pinctrl-names = "default","sleep";
                pinctrl-0 = <&pinctrl_cyttsp5_gpio>;
                pinctrl-1 = <&pinctrl_cyttsp5_gpio_sleep>;
                interrupt-parent = <&gpio5>;
                interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
                reset-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
        };

Regards,
Andreas

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-12-18 22:18 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-03 11:48 [PATCH v2 0/4] Add support for the Cypress cyttsp5 Alistair Francis
2021-11-03 11:48 ` Alistair Francis
2021-11-03 11:48 ` [PATCH v2 1/4] Input: Add driver for Cypress Generation 5 touchscreen Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-05 15:01   ` Andreas Kemnade
2021-11-05 15:01     ` Andreas Kemnade
2021-11-06  6:47   ` Dmitry Torokhov
2021-11-06  6:47     ` Dmitry Torokhov
2021-12-01 12:27     ` Alistair Francis
2021-12-01 12:27       ` Alistair Francis
2021-12-13  5:45       ` Dmitry Torokhov
2021-12-13  5:45         ` Dmitry Torokhov
2021-12-13 18:49         ` Andreas Kemnade
2021-12-13 18:49           ` Andreas Kemnade
2021-12-18 22:18         ` Andreas Kemnade [this message]
2021-12-18 22:18           ` Andreas Kemnade
2021-12-21 23:28           ` Alistair Francis
2021-12-21 23:28             ` Alistair Francis
2021-12-23 13:47   ` Andy Shevchenko
2021-12-23 13:47     ` Andy Shevchenko
2021-11-03 11:48 ` [PATCH v2 2/4] Documentation: DT: bindings: input: Add documentation for cyttsp5 Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-03 23:07   ` Rob Herring
2021-11-03 23:07     ` Rob Herring
2021-11-05 14:21   ` Andreas Kemnade
2021-11-05 14:21     ` Andreas Kemnade
2021-11-10 12:59     ` Alistair Francis
2021-11-10 12:59       ` Alistair Francis
2021-11-10 17:36       ` Andreas Kemnade
2021-11-10 17:36         ` Andreas Kemnade
2021-11-11 15:16         ` Linus Walleij
2021-11-11 15:16           ` Linus Walleij
2021-11-18 12:51           ` Alistair Francis
2021-11-18 12:51             ` Alistair Francis
2021-11-03 11:48 ` [PATCH v2 3/4] ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-03 11:48 ` [PATCH v2 4/4] ARM: dts: imx7d: remarkable2: Enable the cyttsp5 Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-06  2:25   ` Dmitry Torokhov
2021-11-06  2:25     ` Dmitry Torokhov
2021-11-05 14:52 ` [PATCH v2 0/4] Add support for the Cypress cyttsp5 Andreas Kemnade
2021-11-05 14:52   ` Andreas Kemnade
2021-11-25  9:44   ` Alistair Francis
2021-11-25  9:44     ` Alistair Francis

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