Re: [PATCH v3 1/2] input: Add RAVE SP Powerbutton driver

[Dmitry Torokhov]

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@xxxxxxxxx>
> Cc: linux-input@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
> Cc: Chris Healy <cphealy@xxxxxxxxx>
> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>

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@xxxxxxxxx
> [v1] lkml.kernel.org/r/20180226154130.25774-1-andrew.smirnov@xxxxxxxxx
> 
>  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@xxxxxxxxxxxxxxxxxx>");
> +MODULE_AUTHOR("Nikita Yushchenko <nikita.yoush@xxxxxxxxxxxxxxxxxx>");
> +MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@xxxxxxxxx>");
> +MODULE_DESCRIPTION("RAVE SP Power Button driver");
> -- 
> 2.14.3
> 

-- 
Dmitry