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Commit 1af2b76f authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Lee Jones
Browse files

input: max77650: Add onkey support 



Add support for the push- and slide-button events for max77650.

Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 5be102eb

drivers/input/misc/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -190,6 +190,15 @@ config INPUT_M68K_BEEP 
	tristate "M68k Beeper support"

	depends on M68K



config INPUT_MAX77650_ONKEY

	tristate "Maxim MAX77650 ONKEY support"

	depends on MFD_MAX77650

	help

	  Support the ONKEY of the MAX77650 PMIC as an input device.



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

	  will be called max77650-onkey.



config INPUT_MAX77693_HAPTIC

	tristate "MAXIM MAX77693/MAX77843 haptic controller support"

	depends on (MFD_MAX77693 || MFD_MAX77843) && PWM

drivers/input/misc/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o 
obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o

obj-$(CONFIG_INPUT_KXTJ9)		+= kxtj9.o

obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o

obj-$(CONFIG_INPUT_MAX77650_ONKEY)	+= max77650-onkey.o

obj-$(CONFIG_INPUT_MAX77693_HAPTIC)	+= max77693-haptic.o

obj-$(CONFIG_INPUT_MAX8925_ONKEY)	+= max8925_onkey.o

obj-$(CONFIG_INPUT_MAX8997_HAPTIC)	+= max8997_haptic.o

drivers/input/misc/max77650-onkey.c

0 → 100644
+121 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

//

// Copyright (C) 2018 BayLibre SAS

// Author: Bartosz Golaszewski <bgolaszewski@baylibre.com>

//

// ONKEY driver for MAXIM 77650/77651 charger/power-supply.



#include <linux/i2c.h>

#include <linux/input.h>

#include <linux/interrupt.h>

#include <linux/mfd/max77650.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>



#define MAX77650_ONKEY_MODE_MASK	BIT(3)

#define MAX77650_ONKEY_MODE_PUSH	0x00

#define MAX77650_ONKEY_MODE_SLIDE	BIT(3)



struct max77650_onkey {

	struct input_dev *input;

	unsigned int code;

};



static irqreturn_t max77650_onkey_falling(int irq, void *data)

{

	struct max77650_onkey *onkey = data;



	input_report_key(onkey->input, onkey->code, 0);

	input_sync(onkey->input);



	return IRQ_HANDLED;

}



static irqreturn_t max77650_onkey_rising(int irq, void *data)

{

	struct max77650_onkey *onkey = data;



	input_report_key(onkey->input, onkey->code, 1);

	input_sync(onkey->input);



	return IRQ_HANDLED;

}



static int max77650_onkey_probe(struct platform_device *pdev)

{

	int irq_r, irq_f, error, mode;

	struct max77650_onkey *onkey;

	struct device *dev, *parent;

	struct regmap *map;

	unsigned int type;



	dev = &pdev->dev;

	parent = dev->parent;



	map = dev_get_regmap(parent, NULL);

	if (!map)

		return -ENODEV;



	onkey = devm_kzalloc(dev, sizeof(*onkey), GFP_KERNEL);

	if (!onkey)

		return -ENOMEM;



	error = device_property_read_u32(dev, "linux,code", &onkey->code);

	if (error)

		onkey->code = KEY_POWER;



	if (device_property_read_bool(dev, "maxim,onkey-slide")) {

		mode = MAX77650_ONKEY_MODE_SLIDE;

		type = EV_SW;

	} else {

		mode = MAX77650_ONKEY_MODE_PUSH;

		type = EV_KEY;

	}



	error = regmap_update_bits(map, MAX77650_REG_CNFG_GLBL,

				   MAX77650_ONKEY_MODE_MASK, mode);

	if (error)

		return error;



	irq_f = platform_get_irq_byname(pdev, "nEN_F");

	if (irq_f < 0)

		return irq_f;



	irq_r = platform_get_irq_byname(pdev, "nEN_R");

	if (irq_r < 0)

		return irq_r;



	onkey->input = devm_input_allocate_device(dev);

	if (!onkey->input)

		return -ENOMEM;



	onkey->input->name = "max77650_onkey";

	onkey->input->phys = "max77650_onkey/input0";

	onkey->input->id.bustype = BUS_I2C;

	input_set_capability(onkey->input, type, onkey->code);



	error = devm_request_any_context_irq(dev, irq_f, max77650_onkey_falling,

					     IRQF_ONESHOT, "onkey-down", onkey);

	if (error < 0)

		return error;



	error = devm_request_any_context_irq(dev, irq_r, max77650_onkey_rising,

					     IRQF_ONESHOT, "onkey-up", onkey);

	if (error < 0)

		return error;



	return input_register_device(onkey->input);

}



static struct platform_driver max77650_onkey_driver = {

	.driver = {

		.name = "max77650-onkey",

	},

	.probe = max77650_onkey_probe,

};

module_platform_driver(max77650_onkey_driver);



MODULE_DESCRIPTION("MAXIM 77650/77651 ONKEY driver");

MODULE_AUTHOR("Bartosz Golaszewski <bgolaszewski@baylibre.com>");

MODULE_LICENSE("GPL v2");