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Commit 5a35b85c authored by Joseph Chen's avatar Joseph Chen Committed by Dmitry Torokhov
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Input: add power key driver for Rockchip RK805 PMIC 



This driver provides a input driver for the power key on the Rockchip RK805
PMIC.

Signed-off-by: default avatarJoseph Chen <chenjh@rock-chips.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 53a7ff8f

drivers/input/misc/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -581,6 +581,17 @@ config INPUT_PWM_BEEPER 
	  To compile this driver as a module, choose M here: the module will be

	  called pwm-beeper.



config INPUT_RK805_PWRKEY

	tristate "Rockchip RK805 PMIC power key support"

	depends on MFD_RK808

	help

	  Select this option to enable power key driver for RK805.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the module will be

	  called rk805_pwrkey.



config INPUT_GPIO_ROTARY_ENCODER

	tristate "Rotary encoders connected to GPIO pins"

	depends on GPIOLIB || COMPILE_TEST

drivers/input/misc/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o 
obj-$(CONFIG_INPUT_RETU_PWRBUTTON)	+= retu-pwrbutton.o

obj-$(CONFIG_INPUT_AXP20X_PEK)		+= axp20x-pek.o

obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER)	+= rotary_encoder.o

obj-$(CONFIG_INPUT_RK805_PWRKEY)	+= rk805-pwrkey.o

obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o

obj-$(CONFIG_INPUT_SIRFSOC_ONKEY)	+= sirfsoc-onkey.o

obj-$(CONFIG_INPUT_SOC_BUTTON_ARRAY)	+= soc_button_array.o

drivers/input/misc/rk805-pwrkey.c

0 → 100644
+111 −0
Original line number Diff line number Diff line 
/*

 * Rockchip RK805 PMIC Power Key driver

 *

 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd

 *

 * Author: Joseph Chen <chenjh@rock-chips.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under  the terms of the GNU General  Public License as published by the

 * Free Software Foundation; either version 2 of the License, or (at your

 * option) any later version.

 */



#include <linux/errno.h>

#include <linux/init.h>

#include <linux/input.h>

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/platform_device.h>



static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)

{

	struct input_dev *pwr = _pwr;



	input_report_key(pwr, KEY_POWER, 1);

	input_sync(pwr);



	return IRQ_HANDLED;

}



static irqreturn_t pwrkey_rise_irq(int irq, void *_pwr)

{

	struct input_dev *pwr = _pwr;



	input_report_key(pwr, KEY_POWER, 0);

	input_sync(pwr);



	return IRQ_HANDLED;

}



static int rk805_pwrkey_probe(struct platform_device *pdev)

{

	struct input_dev *pwr;

	int fall_irq, rise_irq;

	int err;



	pwr = devm_input_allocate_device(&pdev->dev);

	if (!pwr) {

		dev_err(&pdev->dev, "Can't allocate power button\n");

		return -ENOMEM;

	}



	pwr->name = "rk805 pwrkey";

	pwr->phys = "rk805_pwrkey/input0";

	pwr->id.bustype = BUS_HOST;

	input_set_capability(pwr, EV_KEY, KEY_POWER);



	fall_irq = platform_get_irq(pdev, 0);

	if (fall_irq < 0) {

		dev_err(&pdev->dev, "Can't get fall irq: %d\n", fall_irq);

		return fall_irq;

	}



	rise_irq = platform_get_irq(pdev, 1);

	if (rise_irq < 0) {

		dev_err(&pdev->dev, "Can't get rise irq: %d\n", rise_irq);

		return rise_irq;

	}



	err = devm_request_any_context_irq(&pwr->dev, fall_irq,

					   pwrkey_fall_irq,

					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,

					   "rk805_pwrkey_fall", pwr);

	if (err < 0) {

		dev_err(&pdev->dev, "Can't register fall irq: %d\n", err);

		return err;

	}



	err = devm_request_any_context_irq(&pwr->dev, rise_irq,

					   pwrkey_rise_irq,

					   IRQF_TRIGGER_RISING | IRQF_ONESHOT,

					   "rk805_pwrkey_rise", pwr);

	if (err < 0) {

		dev_err(&pdev->dev, "Can't register rise irq: %d\n", err);

		return err;

	}



	err = input_register_device(pwr);

	if (err) {

		dev_err(&pdev->dev, "Can't register power button: %d\n", err);

		return err;

	}



	platform_set_drvdata(pdev, pwr);

	device_init_wakeup(&pdev->dev, true);



	return 0;

}



static struct platform_driver rk805_pwrkey_driver = {

	.probe	= rk805_pwrkey_probe,

	.driver	= {

		.name = "rk805-pwrkey",

	},

};

module_platform_driver(rk805_pwrkey_driver);



MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");

MODULE_DESCRIPTION("RK805 PMIC Power Key driver");

MODULE_LICENSE("GPL");