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Release 4.11 drivers/input/misc/88pm80x_onkey.c

/*
 * Marvell 88PM80x ONKEY driver
 *
 * Copyright (C) 2012 Marvell International Ltd.
 * Haojian Zhuang <haojian.zhuang@marvell.com>
 * Qiao Zhou <zhouqiao@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/input.h>
#include <linux/mfd/88pm80x.h>
#include <linux/regmap.h>
#include <linux/slab.h>


#define PM800_LONG_ONKEY_EN		(1 << 0)

#define PM800_LONG_KEY_DELAY		(8)	
/* 1 .. 16 seconds */

#define PM800_LONKEY_PRESS_TIME		((PM800_LONG_KEY_DELAY-1) << 4)

#define PM800_LONKEY_PRESS_TIME_MASK	(0xF0)

#define PM800_SW_PDOWN			(1 << 5)


struct pm80x_onkey_info {
	
struct input_dev *idev;
	
struct pm80x_chip *pm80x;
	
struct regmap *map;
	
int irq;
};

/* 88PM80x gives us an interrupt when ONKEY is held */

static irqreturn_t pm80x_onkey_handler(int irq, void *data) { struct pm80x_onkey_info *info = data; int ret = 0; unsigned int val; ret = regmap_read(info->map, PM800_STATUS_1, &val); if (ret < 0) { dev_err(info->idev->dev.parent, "failed to read status: %d\n", ret); return IRQ_NONE; } val &= PM800_ONKEY_STS1; input_report_key(info->idev, KEY_POWER, val); input_sync(info->idev); return IRQ_HANDLED; }

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Qiao Zhou94100.00%1100.00%
Total94100.00%1100.00%

static SIMPLE_DEV_PM_OPS(pm80x_onkey_pm_ops, pm80x_dev_suspend, pm80x_dev_resume);
static int pm80x_onkey_probe(struct platform_device *pdev) { struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); struct pm80x_onkey_info *info; int err; info = kzalloc(sizeof(struct pm80x_onkey_info), GFP_KERNEL); if (!info) return -ENOMEM; info->pm80x = chip; info->irq = platform_get_irq(pdev, 0); if (info->irq < 0) { dev_err(&pdev->dev, "No IRQ resource!\n"); err = -EINVAL; goto out; } info->map = info->pm80x->regmap; if (!info->map) { dev_err(&pdev->dev, "no regmap!\n"); err = -EINVAL; goto out; } info->idev = input_allocate_device(); if (!info->idev) { dev_err(&pdev->dev, "Failed to allocate input dev\n"); err = -ENOMEM; goto out; } info->idev->name = "88pm80x_on"; info->idev->phys = "88pm80x_on/input0"; info->idev->id.bustype = BUS_I2C; info->idev->dev.parent = &pdev->dev; info->idev->evbit[0] = BIT_MASK(EV_KEY); __set_bit(KEY_POWER, info->idev->keybit); err = pm80x_request_irq(info->pm80x, info->irq, pm80x_onkey_handler, IRQF_ONESHOT, "onkey", info); if (err < 0) { dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n", info->irq, err); goto out_reg; } err = input_register_device(info->idev); if (err) { dev_err(&pdev->dev, "Can't register input device: %d\n", err); goto out_irq; } platform_set_drvdata(pdev, info); /* Enable long onkey detection */ regmap_update_bits(info->map, PM800_RTC_MISC4, PM800_LONG_ONKEY_EN, PM800_LONG_ONKEY_EN); /* Set 8-second interval */ regmap_update_bits(info->map, PM800_RTC_MISC3, PM800_LONKEY_PRESS_TIME_MASK, PM800_LONKEY_PRESS_TIME); device_init_wakeup(&pdev->dev, 1); return 0; out_irq: pm80x_free_irq(info->pm80x, info->irq, info); out_reg: input_free_device(info->idev); out: kfree(info); return err; }

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Qiao Zhou395100.00%1100.00%
Total395100.00%1100.00%


static int pm80x_onkey_remove(struct platform_device *pdev) { struct pm80x_onkey_info *info = platform_get_drvdata(pdev); pm80x_free_irq(info->pm80x, info->irq, info); input_unregister_device(info->idev); kfree(info); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Qiao Zhou49100.00%1100.00%
Total49100.00%1100.00%

static struct platform_driver pm80x_onkey_driver = { .driver = { .name = "88pm80x-onkey", .pm = &pm80x_onkey_pm_ops, }, .probe = pm80x_onkey_probe, .remove = pm80x_onkey_remove, }; module_platform_driver(pm80x_onkey_driver); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Marvell 88PM80x ONKEY driver"); MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>"); MODULE_ALIAS("platform:88pm80x-onkey");

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Qiao Zhou670100.00%1100.00%
Total670100.00%1100.00%
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