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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…
…/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: usbtouchscreen - support bigger iNexio touchscreens Input: ads7846 - return error on regulator_get() failure Input: twl4030-vibra - correct the power down sequence Input: enable onkey driver of max8925 Input: use ABS_CNT rather than (ABS_MAX + 1)
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/** | ||
* max8925_onkey.c - MAX8925 ONKEY driver | ||
* | ||
* Copyright (C) 2009 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 | ||
*/ | ||
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||
#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/max8925.h> | ||
#include <linux/slab.h> | ||
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#define HARDRESET_EN (1 << 7) | ||
#define PWREN_EN (1 << 7) | ||
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struct max8925_onkey_info { | ||
struct input_dev *idev; | ||
struct i2c_client *i2c; | ||
int irq; | ||
}; | ||
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/* | ||
* MAX8925 gives us an interrupt when ONKEY is held for 3 seconds. | ||
* max8925_set_bits() operates I2C bus and may sleep. So implement | ||
* it in thread IRQ handler. | ||
*/ | ||
static irqreturn_t max8925_onkey_handler(int irq, void *data) | ||
{ | ||
struct max8925_onkey_info *info = data; | ||
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input_report_key(info->idev, KEY_POWER, 1); | ||
input_sync(info->idev); | ||
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/* Enable hardreset to halt if system isn't shutdown on time */ | ||
max8925_set_bits(info->i2c, MAX8925_SYSENSEL, | ||
HARDRESET_EN, HARDRESET_EN); | ||
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return IRQ_HANDLED; | ||
} | ||
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static int __devinit max8925_onkey_probe(struct platform_device *pdev) | ||
{ | ||
struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent); | ||
struct max8925_onkey_info *info; | ||
int error; | ||
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info = kzalloc(sizeof(struct max8925_onkey_info), GFP_KERNEL); | ||
if (!info) | ||
return -ENOMEM; | ||
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info->i2c = chip->i2c; | ||
info->irq = chip->irq_base + MAX8925_IRQ_GPM_SW_3SEC; | ||
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info->idev = input_allocate_device(); | ||
if (!info->idev) { | ||
dev_err(chip->dev, "Failed to allocate input dev\n"); | ||
error = -ENOMEM; | ||
goto out_input; | ||
} | ||
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info->idev->name = "max8925_on"; | ||
info->idev->phys = "max8925_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); | ||
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error = request_threaded_irq(info->irq, NULL, max8925_onkey_handler, | ||
IRQF_ONESHOT, "onkey", info); | ||
if (error < 0) { | ||
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n", | ||
info->irq, error); | ||
goto out_irq; | ||
} | ||
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error = input_register_device(info->idev); | ||
if (error) { | ||
dev_err(chip->dev, "Can't register input device: %d\n", error); | ||
goto out; | ||
} | ||
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platform_set_drvdata(pdev, info); | ||
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return 0; | ||
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out: | ||
free_irq(info->irq, info); | ||
out_irq: | ||
input_free_device(info->idev); | ||
out_input: | ||
kfree(info); | ||
return error; | ||
} | ||
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static int __devexit max8925_onkey_remove(struct platform_device *pdev) | ||
{ | ||
struct max8925_onkey_info *info = platform_get_drvdata(pdev); | ||
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free_irq(info->irq, info); | ||
input_unregister_device(info->idev); | ||
kfree(info); | ||
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platform_set_drvdata(pdev, NULL); | ||
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return 0; | ||
} | ||
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static struct platform_driver max8925_onkey_driver = { | ||
.driver = { | ||
.name = "max8925-onkey", | ||
.owner = THIS_MODULE, | ||
}, | ||
.probe = max8925_onkey_probe, | ||
.remove = __devexit_p(max8925_onkey_remove), | ||
}; | ||
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static int __init max8925_onkey_init(void) | ||
{ | ||
return platform_driver_register(&max8925_onkey_driver); | ||
} | ||
module_init(max8925_onkey_init); | ||
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static void __exit max8925_onkey_exit(void) | ||
{ | ||
platform_driver_unregister(&max8925_onkey_driver); | ||
} | ||
module_exit(max8925_onkey_exit); | ||
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MODULE_DESCRIPTION("Maxim MAX8925 ONKEY driver"); | ||
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); | ||
MODULE_LICENSE("GPL"); |
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