input: Add support for Qualcomm PMIC8XXX power key
Add support for PMIC8XXX power key driven over dedicated KYPD_PWR_N pin. Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Trilok Soni <tsoni@codeaurora.org> Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Trilok Soni
Samuel Ortiz
Родитель
39325b59d8
Коммит
92d57a73e4
|
|
@ -330,6 +330,17 @@ config INPUT_PWM_BEEPER
|
|||
To compile this driver as a module, choose M here: the module will be
|
||||
called pwm-beeper.
|
||||
|
||||
config INPUT_PMIC8XXX_PWRKEY
|
||||
tristate "PMIC8XXX power key support"
|
||||
depends on MFD_PM8XXX
|
||||
help
|
||||
Say Y here if you want support for the PMIC8XXX power key.
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called pmic8xxx-pwrkey.
|
||||
|
||||
config INPUT_GPIO_ROTARY_ENCODER
|
||||
tristate "Rotary encoders connected to GPIO pins"
|
||||
depends on GPIOLIB && GENERIC_GPIO
|
||||
|
|
|
|||
|
|
@ -33,6 +33,7 @@ obj-$(CONFIG_INPUT_PCF8574) += pcf8574_keypad.o
|
|||
obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o
|
||||
obj-$(CONFIG_INPUT_POWERMATE) += powermate.o
|
||||
obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o
|
||||
obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o
|
||||
obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o
|
||||
obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o
|
||||
obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,231 @@
|
|||
/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 and
|
||||
* only version 2 as published by the Free Software Foundation.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/log2.h>
|
||||
|
||||
#include <linux/mfd/pm8xxx/core.h>
|
||||
#include <linux/input/pmic8xxx-pwrkey.h>
|
||||
|
||||
#define PON_CNTL_1 0x1C
|
||||
#define PON_CNTL_PULL_UP BIT(7)
|
||||
#define PON_CNTL_TRIG_DELAY_MASK (0x7)
|
||||
|
||||
/**
|
||||
* struct pmic8xxx_pwrkey - pmic8xxx pwrkey information
|
||||
* @key_press_irq: key press irq number
|
||||
*/
|
||||
struct pmic8xxx_pwrkey {
|
||||
struct input_dev *pwr;
|
||||
int key_press_irq;
|
||||
};
|
||||
|
||||
static irqreturn_t pwrkey_press_irq(int irq, void *_pwrkey)
|
||||
{
|
||||
struct pmic8xxx_pwrkey *pwrkey = _pwrkey;
|
||||
|
||||
input_report_key(pwrkey->pwr, KEY_POWER, 1);
|
||||
input_sync(pwrkey->pwr);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t pwrkey_release_irq(int irq, void *_pwrkey)
|
||||
{
|
||||
struct pmic8xxx_pwrkey *pwrkey = _pwrkey;
|
||||
|
||||
input_report_key(pwrkey->pwr, KEY_POWER, 0);
|
||||
input_sync(pwrkey->pwr);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int pmic8xxx_pwrkey_suspend(struct device *dev)
|
||||
{
|
||||
struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev);
|
||||
|
||||
if (device_may_wakeup(dev))
|
||||
enable_irq_wake(pwrkey->key_press_irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pmic8xxx_pwrkey_resume(struct device *dev)
|
||||
{
|
||||
struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev);
|
||||
|
||||
if (device_may_wakeup(dev))
|
||||
disable_irq_wake(pwrkey->key_press_irq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(pm8xxx_pwr_key_pm_ops,
|
||||
pmic8xxx_pwrkey_suspend, pmic8xxx_pwrkey_resume);
|
||||
|
||||
static int __devinit pmic8xxx_pwrkey_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct input_dev *pwr;
|
||||
int key_release_irq = platform_get_irq(pdev, 0);
|
||||
int key_press_irq = platform_get_irq(pdev, 1);
|
||||
int err;
|
||||
unsigned int delay;
|
||||
u8 pon_cntl;
|
||||
struct pmic8xxx_pwrkey *pwrkey;
|
||||
const struct pm8xxx_pwrkey_platform_data *pdata = mfd_get_data(pdev);
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(&pdev->dev, "power key platform data not supplied\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (pdata->kpd_trigger_delay_us > 62500) {
|
||||
dev_err(&pdev->dev, "invalid power key trigger delay\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
pwrkey = kzalloc(sizeof(*pwrkey), GFP_KERNEL);
|
||||
if (!pwrkey)
|
||||
return -ENOMEM;
|
||||
|
||||
pwr = input_allocate_device();
|
||||
if (!pwr) {
|
||||
dev_dbg(&pdev->dev, "Can't allocate power button\n");
|
||||
err = -ENOMEM;
|
||||
goto free_pwrkey;
|
||||
}
|
||||
|
||||
input_set_capability(pwr, EV_KEY, KEY_POWER);
|
||||
|
||||
pwr->name = "pmic8xxx_pwrkey";
|
||||
pwr->phys = "pmic8xxx_pwrkey/input0";
|
||||
pwr->dev.parent = &pdev->dev;
|
||||
|
||||
delay = (pdata->kpd_trigger_delay_us << 10) / USEC_PER_SEC;
|
||||
delay = 1 + ilog2(delay);
|
||||
|
||||
err = pm8xxx_readb(pdev->dev.parent, PON_CNTL_1, &pon_cntl);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed reading PON_CNTL_1 err=%d\n", err);
|
||||
goto free_input_dev;
|
||||
}
|
||||
|
||||
pon_cntl &= ~PON_CNTL_TRIG_DELAY_MASK;
|
||||
pon_cntl |= (delay & PON_CNTL_TRIG_DELAY_MASK);
|
||||
if (pdata->pull_up)
|
||||
pon_cntl |= PON_CNTL_PULL_UP;
|
||||
else
|
||||
pon_cntl &= ~PON_CNTL_PULL_UP;
|
||||
|
||||
err = pm8xxx_writeb(pdev->dev.parent, PON_CNTL_1, pon_cntl);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed writing PON_CNTL_1 err=%d\n", err);
|
||||
goto free_input_dev;
|
||||
}
|
||||
|
||||
err = input_register_device(pwr);
|
||||
if (err) {
|
||||
dev_dbg(&pdev->dev, "Can't register power key: %d\n", err);
|
||||
goto free_input_dev;
|
||||
}
|
||||
|
||||
pwrkey->key_press_irq = key_press_irq;
|
||||
pwrkey->pwr = pwr;
|
||||
|
||||
platform_set_drvdata(pdev, pwrkey);
|
||||
|
||||
err = request_irq(key_press_irq, pwrkey_press_irq,
|
||||
IRQF_TRIGGER_RISING, "pmic8xxx_pwrkey_press", pwrkey);
|
||||
if (err < 0) {
|
||||
dev_dbg(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",
|
||||
key_press_irq, err);
|
||||
goto unreg_input_dev;
|
||||
}
|
||||
|
||||
err = request_irq(key_release_irq, pwrkey_release_irq,
|
||||
IRQF_TRIGGER_RISING, "pmic8xxx_pwrkey_release", pwrkey);
|
||||
if (err < 0) {
|
||||
dev_dbg(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n",
|
||||
key_release_irq, err);
|
||||
|
||||
goto free_press_irq;
|
||||
}
|
||||
|
||||
device_init_wakeup(&pdev->dev, pdata->wakeup);
|
||||
|
||||
return 0;
|
||||
|
||||
free_press_irq:
|
||||
free_irq(key_press_irq, NULL);
|
||||
unreg_input_dev:
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
input_unregister_device(pwr);
|
||||
pwr = NULL;
|
||||
free_input_dev:
|
||||
input_free_device(pwr);
|
||||
free_pwrkey:
|
||||
kfree(pwrkey);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __devexit pmic8xxx_pwrkey_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct pmic8xxx_pwrkey *pwrkey = platform_get_drvdata(pdev);
|
||||
int key_release_irq = platform_get_irq(pdev, 0);
|
||||
int key_press_irq = platform_get_irq(pdev, 1);
|
||||
|
||||
device_init_wakeup(&pdev->dev, 0);
|
||||
|
||||
free_irq(key_press_irq, pwrkey);
|
||||
free_irq(key_release_irq, pwrkey);
|
||||
input_unregister_device(pwrkey->pwr);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
kfree(pwrkey);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver pmic8xxx_pwrkey_driver = {
|
||||
.probe = pmic8xxx_pwrkey_probe,
|
||||
.remove = __devexit_p(pmic8xxx_pwrkey_remove),
|
||||
.driver = {
|
||||
.name = PM8XXX_PWRKEY_DEV_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
.pm = &pm8xxx_pwr_key_pm_ops,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init pmic8xxx_pwrkey_init(void)
|
||||
{
|
||||
return platform_driver_register(&pmic8xxx_pwrkey_driver);
|
||||
}
|
||||
module_init(pmic8xxx_pwrkey_init);
|
||||
|
||||
static void __exit pmic8xxx_pwrkey_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&pmic8xxx_pwrkey_driver);
|
||||
}
|
||||
module_exit(pmic8xxx_pwrkey_exit);
|
||||
|
||||
MODULE_ALIAS("platform:pmic8xxx_pwrkey");
|
||||
MODULE_DESCRIPTION("PMIC8XXX Power Key driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_AUTHOR("Trilok Soni <tsoni@codeaurora.org>");
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 and
|
||||
* only version 2 as published by the Free Software Foundation.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __PMIC8XXX_PWRKEY_H__
|
||||
#define __PMIC8XXX_PWRKEY_H__
|
||||
|
||||
#define PM8XXX_PWRKEY_DEV_NAME "pm8xxx-pwrkey"
|
||||
|
||||
/**
|
||||
* struct pm8xxx_pwrkey_platform_data - platform data for pwrkey driver
|
||||
* @pull up: power on register control for pull up/down configuration
|
||||
* @kpd_trigger_delay_us: time delay for power key state change interrupt
|
||||
* trigger.
|
||||
* @wakeup: configure power key as wakeup source
|
||||
*/
|
||||
struct pm8xxx_pwrkey_platform_data {
|
||||
bool pull_up;
|
||||
u32 kpd_trigger_delay_us;
|
||||
u32 wakeup;
|
||||
};
|
||||
|
||||
#endif /* __PMIC8XXX_PWRKEY_H__ */
|
||||
Загрузка…
Ссылка в новой задаче