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Release 4.11 drivers/input/misc/88pm860x_onkey.c

/*
 * 88pm860x_onkey.c - Marvell 88PM860x ONKEY driver
 *
 * Copyright (C) 2009-2010 Marvell International Ltd.
 *      Haojian Zhuang <haojian.zhuang@marvell.com>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/mfd/88pm860x.h>
#include <linux/slab.h>
#include <linux/device.h>


#define PM8607_WAKEUP		0x0b


#define LONG_ONKEY_EN		(1 << 1)

#define ONKEY_STATUS		(1 << 0)


struct pm860x_onkey_info {
	
struct input_dev	*idev;
	
struct pm860x_chip	*chip;
	
struct i2c_client	*i2c;
	
struct device		*dev;
	
int			irq;
};

/* 88PM860x gives us an interrupt when ONKEY is held */

static irqreturn_t pm860x_onkey_handler(int irq, void *data) { struct pm860x_onkey_info *info = data; int ret; ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2); ret &= ONKEY_STATUS; input_report_key(info->idev, KEY_POWER, ret); input_sync(info->idev); /* Enable 8-second long onkey detection */ pm860x_set_bits(info->i2c, PM8607_WAKEUP, 3, LONG_ONKEY_EN); return IRQ_HANDLED; }

Contributors

PersonTokensPropCommitsCommitProp
Haojian Zhuang73100.00%1100.00%
Total73100.00%1100.00%


static int pm860x_onkey_probe(struct platform_device *pdev) { struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); struct pm860x_onkey_info *info; int irq, ret; irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "No IRQ resource!\n"); return -EINVAL; } info = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_onkey_info), GFP_KERNEL); if (!info) return -ENOMEM; info->chip = chip; info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; info->dev = &pdev->dev; info->irq = irq; info->idev = devm_input_allocate_device(&pdev->dev); if (!info->idev) { dev_err(chip->dev, "Failed to allocate input dev\n"); return -ENOMEM; } info->idev->name = "88pm860x_on"; info->idev->phys = "88pm860x_on/input0"; info->idev->id.bustype = BUS_I2C; info->idev->dev.parent = &pdev->dev; info->idev->evbit[0] = BIT_MASK(EV_KEY); info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER); ret = input_register_device(info->idev); if (ret) { dev_err(chip->dev, "Can't register input device: %d\n", ret); return ret; } ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, pm860x_onkey_handler, IRQF_ONESHOT, "onkey", info); if (ret < 0) { dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n", info->irq, ret); return ret; } platform_set_drvdata(pdev, info); device_init_wakeup(&pdev->dev, 1); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Haojian Zhuang30089.02%133.33%
Himangi Saraogi278.01%133.33%
Jett.Zhou102.97%133.33%
Total337100.00%3100.00%


static int __maybe_unused pm860x_onkey_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); if (device_may_wakeup(dev)) chip->wakeup_flag |= 1 << PM8607_IRQ_ONKEY; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jett.Zhou5398.15%150.00%
Jingoo Han11.85%150.00%
Total54100.00%2100.00%


static int __maybe_unused pm860x_onkey_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); if (device_may_wakeup(dev)) chip->wakeup_flag &= ~(1 << PM8607_IRQ_ONKEY); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Jett.Zhou5698.25%150.00%
Jingoo Han11.75%150.00%
Total57100.00%2100.00%

static SIMPLE_DEV_PM_OPS(pm860x_onkey_pm_ops, pm860x_onkey_suspend, pm860x_onkey_resume); static struct platform_driver pm860x_onkey_driver = { .driver = { .name = "88pm860x-onkey", .pm = &pm860x_onkey_pm_ops, }, .probe = pm860x_onkey_probe, }; module_platform_driver(pm860x_onkey_driver); MODULE_DESCRIPTION("Marvell 88PM860x ONKEY driver"); MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Haojian Zhuang47973.92%116.67%
Jett.Zhou13320.52%116.67%
Himangi Saraogi304.63%116.67%
Tejun Heo30.46%116.67%
Jingoo Han20.31%116.67%
JJ Ding10.15%116.67%
Total648100.00%6100.00%
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