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Release 4.11 drivers/input/misc/da9052_onkey.c

/*
 * ON pin driver for Dialog DA9052 PMICs
 *
 * Copyright(c) 2012 Dialog Semiconductor Ltd.
 *
 * Author: David Dajun Chen <dchen@diasemi.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/input.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>

#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>


struct da9052_onkey {
	
struct da9052 *da9052;
	
struct input_dev *input;
	
struct delayed_work work;
};


static void da9052_onkey_query(struct da9052_onkey *onkey) { int ret; ret = da9052_reg_read(onkey->da9052, DA9052_STATUS_A_REG); if (ret < 0) { dev_err(onkey->da9052->dev, "Failed to read onkey event err=%d\n", ret); } else { /* * Since interrupt for deassertion of ONKEY pin is not * generated, onkey event state determines the onkey * button state. */ bool pressed = !(ret & DA9052_STATUSA_NONKEY); input_report_key(onkey->input, KEY_POWER, pressed); input_sync(onkey->input); /* * Interrupt is generated only when the ONKEY pin * is asserted. Hence the deassertion of the pin * is simulated through work queue. */ if (pressed) schedule_delayed_work(&onkey->work, msecs_to_jiffies(50)); } }

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Ashish Jangam7679.17%150.00%
Anthony Olech2020.83%150.00%
Total96100.00%2100.00%


static void da9052_onkey_work(struct work_struct *work) { struct da9052_onkey *onkey = container_of(work, struct da9052_onkey, work.work); da9052_onkey_query(onkey); }

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Ashish Jangam33100.00%1100.00%
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static irqreturn_t da9052_onkey_irq(int irq, void *data) { struct da9052_onkey *onkey = data; da9052_onkey_query(onkey); return IRQ_HANDLED; }

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Ashish Jangam28100.00%1100.00%
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static int da9052_onkey_probe(struct platform_device *pdev) { struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent); struct da9052_onkey *onkey; struct input_dev *input_dev; int error; if (!da9052) { dev_err(&pdev->dev, "Failed to get the driver's data\n"); return -EINVAL; } onkey = kzalloc(sizeof(*onkey), GFP_KERNEL); input_dev = input_allocate_device(); if (!onkey || !input_dev) { dev_err(&pdev->dev, "Failed to allocate memory\n"); error = -ENOMEM; goto err_free_mem; } onkey->input = input_dev; onkey->da9052 = da9052; INIT_DELAYED_WORK(&onkey->work, da9052_onkey_work); input_dev->name = "da9052-onkey"; input_dev->phys = "da9052-onkey/input0"; input_dev->dev.parent = &pdev->dev; input_dev->evbit[0] = BIT_MASK(EV_KEY); __set_bit(KEY_POWER, input_dev->keybit); error = da9052_request_irq(onkey->da9052, DA9052_IRQ_NONKEY, "ONKEY", da9052_onkey_irq, onkey); if (error < 0) { dev_err(onkey->da9052->dev, "Failed to register ONKEY IRQ: %d\n", error); goto err_free_mem; } error = input_register_device(onkey->input); if (error) { dev_err(&pdev->dev, "Unable to register input device, %d\n", error); goto err_free_irq; } platform_set_drvdata(pdev, onkey); return 0; err_free_irq: da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey); cancel_delayed_work_sync(&onkey->work); err_free_mem: input_free_device(input_dev); kfree(onkey); return error; }

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Ashish Jangam27294.44%133.33%
Fabio Estevam103.47%133.33%
Jesper Juhl62.08%133.33%
Total288100.00%3100.00%


static int da9052_onkey_remove(struct platform_device *pdev) { struct da9052_onkey *onkey = platform_get_drvdata(pdev); da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey); cancel_delayed_work_sync(&onkey->work); input_unregister_device(onkey->input); kfree(onkey); return 0; }

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Ashish Jangam5192.73%150.00%
Fabio Estevam47.27%150.00%
Total55100.00%2100.00%

static struct platform_driver da9052_onkey_driver = { .probe = da9052_onkey_probe, .remove = da9052_onkey_remove, .driver = { .name = "da9052-onkey", }, }; module_platform_driver(da9052_onkey_driver); MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); MODULE_DESCRIPTION("Onkey driver for DA9052"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:da9052-onkey");

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Ashish Jangam55093.22%125.00%
Anthony Olech203.39%125.00%
Fabio Estevam142.37%125.00%
Jesper Juhl61.02%125.00%
Total590100.00%4100.00%
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