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Date: Thu, 8 Mar 2018 15:34:19 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Andrey Smirnov <andrew.smirnov@...il.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
devicetree@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>,
Chris Healy <cphealy@...il.com>,
Lucas Stach <l.stach@...gutronix.de>
Subject: Re: [PATCH v3 1/2] input: Add RAVE SP Powerbutton driver
On Tue, Mar 06, 2018 at 06:01:33PM -0800, Andrey Smirnov wrote:
> Add driver that properly handles input event emitted by RAVE SP
> devices.
>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Cc: linux-input@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: devicetree@...r.kernel.org
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Chris Healy <cphealy@...il.com>
> Cc: Lucas Stach <l.stach@...gutronix.de>
> Reviewed-by: Lucas Stach <l.stach@...gutronix.de>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Applied, thank you.
> ---
>
> Changes since [v2]:
>
> - Collected Reviewed-by from Lucas
>
> Changes since [v1]:
>
> - Removed redundant dev.parent assignment
>
> - Various cosmetic changes
>
> [v2] lkml.kernel.org/r/20180301165527.22274-1-andrew.smirnov@...il.com
> [v1] lkml.kernel.org/r/20180226154130.25774-1-andrew.smirnov@...il.com
>
> drivers/input/misc/Kconfig | 9 ++++
> drivers/input/misc/Makefile | 1 +
> drivers/input/misc/rave-sp-pwrbutton.c | 94 ++++++++++++++++++++++++++++++++++
> 3 files changed, 104 insertions(+)
> create mode 100644 drivers/input/misc/rave-sp-pwrbutton.c
>
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 62a1312a7387..6a3c753b093b 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -841,4 +841,13 @@ config INPUT_HISI_POWERKEY
> To compile this driver as a module, choose M here: the
> module will be called hisi_powerkey.
>
> +config INPUT_RAVE_SP_PWRBUTTON
> + tristate "RAVE SP Power button Driver"
> + depends on RAVE_SP_CORE
> + help
> + Say Y here if you want to enable power key reporting from RAVE SP
> +
> + To compile this driver as a module, choose M here: the
> + module will be called rave-sp-pwrbutton.
> +
> endif
> diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
> index a8f61af865aa..8cc58f362bb8 100644
> --- a/drivers/input/misc/Makefile
> +++ b/drivers/input/misc/Makefile
> @@ -60,6 +60,7 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o
> obj-$(CONFIG_INPUT_POWERMATE) += powermate.o
> obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o
> obj-$(CONFIG_INPUT_PWM_VIBRA) += pwm-vibra.o
> +obj-$(CONFIG_INPUT_RAVE_SP_PWRBUTTON) += rave-sp-pwrbutton.o
> obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o
> obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o
> obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o
> diff --git a/drivers/input/misc/rave-sp-pwrbutton.c b/drivers/input/misc/rave-sp-pwrbutton.c
> new file mode 100644
> index 000000000000..bcab3cdb7ebd
> --- /dev/null
> +++ b/drivers/input/misc/rave-sp-pwrbutton.c
> @@ -0,0 +1,94 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +//
> +// Power Button driver for RAVE SP
> +//
> +// Copyright (C) 2017 Zodiac Inflight Innovations
> +//
> +//
> +
> +#include <linux/input.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/mfd/rave-sp.h>
> +#include <linux/platform_device.h>
> +
> +#define RAVE_SP_EVNT_BUTTON_PRESS (RAVE_SP_EVNT_BASE + 0x00)
> +
> +struct rave_sp_power_button {
> + struct input_dev *idev;
> + struct notifier_block nb;
> +};
> +
> +static int rave_sp_power_button_event(struct notifier_block *nb,
> + unsigned long action, void *data)
> +{
> + struct rave_sp_power_button *pb =
> + container_of(nb, struct rave_sp_power_button, nb);
> + const u8 event = rave_sp_action_unpack_event(action);
> + const u8 value = rave_sp_action_unpack_value(action);
> + struct input_dev *idev = pb->idev;
> +
> + if (event == RAVE_SP_EVNT_BUTTON_PRESS) {
> + input_report_key(idev, KEY_POWER, value);
> + input_sync(idev);
> +
> + return NOTIFY_STOP;
> + }
> +
> + return NOTIFY_DONE;
> +}
> +
> +static int rave_sp_pwrbutton_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct rave_sp_power_button *pb;
> + struct input_dev *idev;
> + int error;
> +
> + pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);
> + if (!pb)
> + return -ENOMEM;
> +
> + idev = devm_input_allocate_device(dev);
> + if (!idev)
> + return -ENOMEM;
> +
> + idev->name = pdev->name;
> +
> + input_set_capability(idev, EV_KEY, KEY_POWER);
> +
> + error = input_register_device(idev);
> + if (error)
> + return error;
> +
> + pb->idev = idev;
> + pb->nb.notifier_call = rave_sp_power_button_event;
> + pb->nb.priority = 128;
> +
> + error = devm_rave_sp_register_event_notifier(dev, &pb->nb);
> + if (error)
> + return error;
> +
> + return 0;
> +}
> +
> +static const struct of_device_id rave_sp_pwrbutton_of_match[] = {
> + { .compatible = "zii,rave-sp-pwrbutton" },
> + {}
> +};
> +
> +static struct platform_driver rave_sp_pwrbutton_driver = {
> + .probe = rave_sp_pwrbutton_probe,
> + .driver = {
> + .name = KBUILD_MODNAME,
> + .of_match_table = rave_sp_pwrbutton_of_match,
> + },
> +};
> +module_platform_driver(rave_sp_pwrbutton_driver);
> +
> +MODULE_DEVICE_TABLE(of, rave_sp_pwrbutton_of_match);
> +MODULE_LICENSE("GPL");
> +MODULE_AUTHOR("Andrey Vostrikov <andrey.vostrikov@...entembedded.com>");
> +MODULE_AUTHOR("Nikita Yushchenko <nikita.yoush@...entembedded.com>");
> +MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@...il.com>");
> +MODULE_DESCRIPTION("RAVE SP Power Button driver");
> --
> 2.14.3
>
--
Dmitry
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