diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/input/misc/88pm80x_onkey.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/input/misc/88pm80x_onkey.c')
-rw-r--r-- | kernel/drivers/input/misc/88pm80x_onkey.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/kernel/drivers/input/misc/88pm80x_onkey.c b/kernel/drivers/input/misc/88pm80x_onkey.c new file mode 100644 index 000000000..cf9908f1e --- /dev/null +++ b/kernel/drivers/input/misc/88pm80x_onkey.c @@ -0,0 +1,167 @@ +/* + * 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; +} + +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; +} + +static int pm80x_onkey_remove(struct platform_device *pdev) +{ + struct pm80x_onkey_info *info = platform_get_drvdata(pdev); + + device_init_wakeup(&pdev->dev, 0); + pm80x_free_irq(info->pm80x, info->irq, info); + input_unregister_device(info->idev); + kfree(info); + return 0; +} + +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"); |