Input: add Retu power button driver. (544a46c9) · Commits · e / devices / android_kernel_samsung_exynos9810

drivers/input/misc/Kconfig

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		@@ -364,6 +364,16 @@ config INPUT_CM109
		To compile this driver as a module, choose M here: the module will be
		called cm109.

		config INPUT_RETU_PWRBUTTON
		tristate "Retu Power button Driver"
		depends on MFD_RETU
		help
		Say Y here if you want to enable power key reporting via the
		Retu chips found in Nokia Internet Tablets (770, N800, N810).

		To compile this driver as a module, choose M here. The module will
		be called retu-pwrbutton.

		config INPUT_TWL4030_PWRBUTTON
		tristate "TWL4030 Power button Driver"
		depends on TWL4030_CORE

drivers/input/misc/Makefile

+1 −0

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		@@ -46,6 +46,7 @@ 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_RB532_BUTTON) += rb532_button.o
		obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o
		obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o
		obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
		obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o

drivers/input/misc/retu-pwrbutton.c

0 → 100644

+99 −0

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		/*
		* Retu power button driver.
		*
		* Copyright (C) 2004-2010 Nokia Corporation
		*
		* Original code written by Ari Saastamoinen, Juha Yrjölä and Felipe Balbi.
		* Rewritten by Aaro Koskinen.
		*
		* This file is subject to the terms and conditions of the GNU General
		* Public License. See the file "COPYING" in the main directory of this
		* archive for more details.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <linux/irq.h>
		#include <linux/init.h>
		#include <linux/slab.h>
		#include <linux/errno.h>
		#include <linux/input.h>
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/mfd/retu.h>
		#include <linux/interrupt.h>
		#include <linux/platform_device.h>

		#define RETU_STATUS_PWRONX (1 << 5)

		static irqreturn_t retu_pwrbutton_irq(int irq, void *_pwr)
		{
		struct input_dev *idev = _pwr;
		struct retu_dev *rdev = input_get_drvdata(idev);
		bool state;

		state = !(retu_read(rdev, RETU_REG_STATUS) & RETU_STATUS_PWRONX);
		input_report_key(idev, KEY_POWER, state);
		input_sync(idev);

		return IRQ_HANDLED;
		}

		static int __devinit retu_pwrbutton_probe(struct platform_device *pdev)
		{
		struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent);
		struct input_dev *idev;
		int irq;
		int error;

		irq = platform_get_irq(pdev, 0);
		if (irq < 0)
		return irq;

		idev = devm_input_allocate_device(&pdev->dev);
		if (!idev)
		return -ENOMEM;

		idev->name = "retu-pwrbutton";
		idev->dev.parent = &pdev->dev;

		input_set_capability(idev, EV_KEY, KEY_POWER);
		input_set_drvdata(idev, rdev);

		error = devm_request_threaded_irq(&pdev->dev, irq,
		NULL, retu_pwrbutton_irq, 0,
		"retu-pwrbutton", idev);
		if (error)
		return error;

		error = input_register_device(idev);
		if (error)
		return error;

		return 0;
		}

		static int __devexit retu_pwrbutton_remove(struct platform_device *pdev)
		{
		return 0;
		}

		static struct platform_driver retu_pwrbutton_driver = {
		.probe = retu_pwrbutton_probe,
		.remove = __devexit_p(retu_pwrbutton_remove),
		.driver = {
		.name = "retu-pwrbutton",
		.owner = THIS_MODULE,
		},
		};
		module_platform_driver(retu_pwrbutton_driver);

		MODULE_ALIAS("platform:retu-pwrbutton");
		MODULE_DESCRIPTION("Retu Power Button");
		MODULE_AUTHOR("Ari Saastamoinen");
		MODULE_AUTHOR("Felipe Balbi");
		MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>");
		MODULE_LICENSE("GPL");