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Input: pf1550 - add onkey support
Add support for the onkey of the pf1550 PMIC. Signed-off-by: Samuel Kayode <samuel.kayode@savoirfairelinux.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Tested-by: Sean Nyekjaer <sean@geanix.com> Link: https://patch.msgid.link/20251001-pf1550-v12-4-a3302aa41687@savoirfairelinux.com Signed-off-by: Lee Jones <lee@kernel.org>
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‎drivers/input/misc/Kconfig‎

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@@ -190,6 +190,17 @@ config INPUT_PCSPKR
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To compile this driver as a module, choose M here: the
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module will be called pcspkr.
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config INPUT_PF1550_ONKEY
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tristate "NXP PF1550 Onkey support"
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depends on MFD_PF1550
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help
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Say Y here if you want support for PF1550 PMIC. Onkey can trigger
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release and 1s(push hold), 2s, 3s, 4s, 8s interrupt for long press
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detect.
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To compile this driver as a module, choose M here. The module will be
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called pf1550-onkey.
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config INPUT_PM8941_PWRKEY
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tristate "Qualcomm PM8941 power key support"
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depends on MFD_SPMI_PMIC

‎drivers/input/misc/Makefile‎

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@@ -63,6 +63,7 @@ obj-$(CONFIG_INPUT_PALMAS_PWRBUTTON) += palmas-pwrbutton.o
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obj-$(CONFIG_INPUT_PCAP) += pcap_keys.o
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obj-$(CONFIG_INPUT_PCF8574) += pcf8574_keypad.o
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obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o
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obj-$(CONFIG_INPUT_PF1550_ONKEY) += pf1550-onkey.o
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obj-$(CONFIG_INPUT_PM8941_PWRKEY) += pm8941-pwrkey.o
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obj-$(CONFIG_INPUT_PM8XXX_VIBRATOR) += pm8xxx-vibrator.o
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obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o

‎drivers/input/misc/pf1550-onkey.c‎

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// SPDX-License-Identifier: GPL-2.0
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/*
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* Driver for the PF1550 ONKEY
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* Copyright (C) 2016 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* Portions Copyright (c) 2025 Savoir-faire Linux Inc.
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* Samuel Kayode <samuel.kayode@savoirfairelinux.com>
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*/
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#include <linux/err.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mfd/pf1550.h>
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#include <linux/platform_device.h>
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#define PF1550_ONKEY_IRQ_NR 6
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struct onkey_drv_data {
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struct device *dev;
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const struct pf1550_ddata *pf1550;
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bool wakeup;
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struct input_dev *input;
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};
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static irqreturn_t pf1550_onkey_irq_handler(int irq, void *data)
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{
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struct onkey_drv_data *onkey = data;
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struct platform_device *pdev = to_platform_device(onkey->dev);
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int i, state, irq_type = -1;
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for (i = 0; i < PF1550_ONKEY_IRQ_NR; i++)
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if (irq == platform_get_irq(pdev, i))
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irq_type = i;
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switch (irq_type) {
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case PF1550_ONKEY_IRQ_PUSHI:
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state = 0;
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break;
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case PF1550_ONKEY_IRQ_1SI:
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case PF1550_ONKEY_IRQ_2SI:
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case PF1550_ONKEY_IRQ_3SI:
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case PF1550_ONKEY_IRQ_4SI:
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case PF1550_ONKEY_IRQ_8SI:
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state = 1;
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break;
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default:
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dev_err(onkey->dev, "onkey interrupt: irq %d occurred\n",
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irq_type);
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return IRQ_HANDLED;
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}
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input_event(onkey->input, EV_KEY, KEY_POWER, state);
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input_sync(onkey->input);
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return IRQ_HANDLED;
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}
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static int pf1550_onkey_probe(struct platform_device *pdev)
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{
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struct onkey_drv_data *onkey;
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struct input_dev *input;
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bool key_power = false;
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int i, irq, error;
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onkey = devm_kzalloc(&pdev->dev, sizeof(*onkey), GFP_KERNEL);
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if (!onkey)
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return -ENOMEM;
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onkey->dev = &pdev->dev;
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onkey->pf1550 = dev_get_drvdata(pdev->dev.parent);
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if (!onkey->pf1550->regmap)
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return dev_err_probe(&pdev->dev, -ENODEV,
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"failed to get regmap\n");
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onkey->wakeup = device_property_read_bool(pdev->dev.parent,
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"wakeup-source");
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if (device_property_read_bool(pdev->dev.parent,
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"nxp,disable-key-power")) {
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error = regmap_clear_bits(onkey->pf1550->regmap,
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PF1550_PMIC_REG_PWRCTRL1,
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PF1550_ONKEY_RST_EN);
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if (error)
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return dev_err_probe(&pdev->dev, error,
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"failed: disable turn system off");
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} else {
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key_power = true;
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}
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input = devm_input_allocate_device(&pdev->dev);
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if (!input)
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return dev_err_probe(&pdev->dev, -ENOMEM,
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"failed to allocate the input device\n");
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input->name = pdev->name;
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input->phys = "pf1550-onkey/input0";
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input->id.bustype = BUS_HOST;
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if (key_power)
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input_set_capability(input, EV_KEY, KEY_POWER);
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onkey->input = input;
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platform_set_drvdata(pdev, onkey);
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for (i = 0; i < PF1550_ONKEY_IRQ_NR; i++) {
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irq = platform_get_irq(pdev, i);
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if (irq < 0)
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return irq;
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error = devm_request_threaded_irq(&pdev->dev, irq, NULL,
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pf1550_onkey_irq_handler,
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IRQF_NO_SUSPEND,
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"pf1550-onkey", onkey);
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if (error)
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return dev_err_probe(&pdev->dev, error,
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"failed: irq request (IRQ: %d)\n",
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i);
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}
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error = input_register_device(input);
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if (error)
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return dev_err_probe(&pdev->dev, error,
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"failed to register input device\n");
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device_init_wakeup(&pdev->dev, onkey->wakeup);
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return 0;
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}
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static int pf1550_onkey_suspend(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct onkey_drv_data *onkey = platform_get_drvdata(pdev);
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int i, irq;
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if (!device_may_wakeup(&pdev->dev))
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regmap_write(onkey->pf1550->regmap,
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PF1550_PMIC_REG_ONKEY_INT_MASK0,
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ONKEY_IRQ_PUSHI | ONKEY_IRQ_1SI | ONKEY_IRQ_2SI |
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ONKEY_IRQ_3SI | ONKEY_IRQ_4SI | ONKEY_IRQ_8SI);
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else
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for (i = 0; i < PF1550_ONKEY_IRQ_NR; i++) {
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irq = platform_get_irq(pdev, i);
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if (irq > 0)
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enable_irq_wake(irq);
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}
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return 0;
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}
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static int pf1550_onkey_resume(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct onkey_drv_data *onkey = platform_get_drvdata(pdev);
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int i, irq;
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if (!device_may_wakeup(&pdev->dev))
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regmap_write(onkey->pf1550->regmap,
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PF1550_PMIC_REG_ONKEY_INT_MASK0,
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~((u8)(ONKEY_IRQ_PUSHI | ONKEY_IRQ_1SI |
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ONKEY_IRQ_2SI | ONKEY_IRQ_3SI | ONKEY_IRQ_4SI |
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ONKEY_IRQ_8SI)));
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else
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for (i = 0; i < PF1550_ONKEY_IRQ_NR; i++) {
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irq = platform_get_irq(pdev, i);
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if (irq > 0)
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disable_irq_wake(irq);
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}
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return 0;
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}
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static SIMPLE_DEV_PM_OPS(pf1550_onkey_pm_ops, pf1550_onkey_suspend,
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pf1550_onkey_resume);
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static const struct platform_device_id pf1550_onkey_id[] = {
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{ "pf1550-onkey", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(platform, pf1550_onkey_id);
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static struct platform_driver pf1550_onkey_driver = {
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.driver = {
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.name = "pf1550-onkey",
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.pm = pm_sleep_ptr(&pf1550_onkey_pm_ops),
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},
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.probe = pf1550_onkey_probe,
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.id_table = pf1550_onkey_id,
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};
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module_platform_driver(pf1550_onkey_driver);
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MODULE_AUTHOR("Freescale Semiconductor");
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MODULE_DESCRIPTION("PF1550 onkey Driver");
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MODULE_LICENSE("GPL");

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